#!/usr/bin/env python
# Copyright (c) 2012 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

"""code generator for GLES2 command buffers."""

import itertools
import os
import os.path
import sys
import re
from optparse import OptionParser
from subprocess import call

_SIZE_OF_UINT32 = 4
_SIZE_OF_COMMAND_HEADER = 4
_FIRST_SPECIFIC_COMMAND_ID = 256

_LICENSE = """// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

"""

_DO_NOT_EDIT_WARNING = """// This file is auto-generated from
// gpu/command_buffer/build_gles2_cmd_buffer.py
// It's formatted by clang-format using chromium coding style:
//    clang-format -i -style=chromium filename
// DO NOT EDIT!

"""

# This string is copied directly out of the gl2.h file from GLES2.0
#
# Edits:
#
# *) Any argument that is a resourceID has been changed to GLid<Type>.
#    (not pointer arguments) and if it's allowed to be zero it's GLidZero<Type>
#    If it's allowed to not exist it's GLidBind<Type>
#
# *) All GLenums have been changed to GLenumTypeOfEnum
#
_GL_TYPES = {
  'GLenum': 'unsigned int',
  'GLboolean': 'unsigned char',
  'GLbitfield': 'unsigned int',
  'GLbyte': 'signed char',
  'GLshort': 'short',
  'GLint': 'int',
  'GLsizei': 'int',
  'GLubyte': 'unsigned char',
  'GLushort': 'unsigned short',
  'GLuint': 'unsigned int',
  'GLfloat': 'float',
  'GLclampf': 'float',
  'GLvoid': 'void',
  'GLfixed': 'int',
  'GLclampx': 'int'
}

_GL_TYPES_32 = {
  'GLintptr': 'long int',
  'GLsizeiptr': 'long int'
}

_GL_TYPES_64 = {
  'GLintptr': 'long long int',
  'GLsizeiptr': 'long long int'
}

# Capabilites selected with glEnable
_CAPABILITY_FLAGS = [
  {'name': 'blend'},
  {'name': 'cull_face'},
  {'name': 'depth_test', 'state_flag': 'framebuffer_state_.clear_state_dirty'},
  {'name': 'dither', 'default': True},
  {'name': 'polygon_offset_fill'},
  {'name': 'sample_alpha_to_coverage'},
  {'name': 'sample_coverage'},
  {'name': 'scissor_test'},
  {'name': 'stencil_test',
   'state_flag': 'framebuffer_state_.clear_state_dirty'},
]

_STATES = {
  'ClearColor': {
    'type': 'Normal',
    'func': 'ClearColor',
    'enum': 'GL_COLOR_CLEAR_VALUE',
    'states': [
      {'name': 'color_clear_red', 'type': 'GLfloat', 'default': '0.0f'},
      {'name': 'color_clear_green', 'type': 'GLfloat', 'default': '0.0f'},
      {'name': 'color_clear_blue', 'type': 'GLfloat', 'default': '0.0f'},
      {'name': 'color_clear_alpha', 'type': 'GLfloat', 'default': '0.0f'},
    ],
  },
  'ClearDepthf': {
    'type': 'Normal',
    'func': 'ClearDepth',
    'enum': 'GL_DEPTH_CLEAR_VALUE',
    'states': [
      {'name': 'depth_clear', 'type': 'GLclampf', 'default': '1.0f'},
    ],
  },
  'ColorMask': {
    'type': 'Normal',
    'func': 'ColorMask',
    'enum': 'GL_COLOR_WRITEMASK',
    'states': [
      {
        'name': 'color_mask_red',
        'type': 'GLboolean',
        'default': 'true',
        'cached': True
      },
      {
        'name': 'color_mask_green',
        'type': 'GLboolean',
        'default': 'true',
        'cached': True
      },
      {
        'name': 'color_mask_blue',
        'type': 'GLboolean',
        'default': 'true',
        'cached': True
      },
      {
        'name': 'color_mask_alpha',
        'type': 'GLboolean',
        'default': 'true',
        'cached': True
      },
    ],
    'state_flag': 'framebuffer_state_.clear_state_dirty',
  },
  'ClearStencil': {
    'type': 'Normal',
    'func': 'ClearStencil',
    'enum': 'GL_STENCIL_CLEAR_VALUE',
    'states': [
      {'name': 'stencil_clear', 'type': 'GLint', 'default': '0'},
    ],
  },
  'BlendColor': {
    'type': 'Normal',
    'func': 'BlendColor',
    'enum': 'GL_BLEND_COLOR',
    'states': [
      {'name': 'blend_color_red', 'type': 'GLfloat', 'default': '0.0f'},
      {'name': 'blend_color_green', 'type': 'GLfloat', 'default': '0.0f'},
      {'name': 'blend_color_blue', 'type': 'GLfloat', 'default': '0.0f'},
      {'name': 'blend_color_alpha', 'type': 'GLfloat', 'default': '0.0f'},
    ],
  },
  'BlendEquation': {
    'type': 'SrcDst',
    'func': 'BlendEquationSeparate',
    'states': [
      {
        'name': 'blend_equation_rgb',
        'type': 'GLenum',
        'enum': 'GL_BLEND_EQUATION_RGB',
        'default': 'GL_FUNC_ADD',
      },
      {
        'name': 'blend_equation_alpha',
        'type': 'GLenum',
        'enum': 'GL_BLEND_EQUATION_ALPHA',
        'default': 'GL_FUNC_ADD',
      },
    ],
  },
  'BlendFunc': {
    'type': 'SrcDst',
    'func': 'BlendFuncSeparate',
    'states': [
      {
        'name': 'blend_source_rgb',
        'type': 'GLenum',
        'enum': 'GL_BLEND_SRC_RGB',
        'default': 'GL_ONE',
      },
      {
        'name': 'blend_dest_rgb',
        'type': 'GLenum',
        'enum': 'GL_BLEND_DST_RGB',
        'default': 'GL_ZERO',
      },
      {
        'name': 'blend_source_alpha',
        'type': 'GLenum',
        'enum': 'GL_BLEND_SRC_ALPHA',
        'default': 'GL_ONE',
      },
      {
        'name': 'blend_dest_alpha',
        'type': 'GLenum',
        'enum': 'GL_BLEND_DST_ALPHA',
        'default': 'GL_ZERO',
      },
    ],
  },
  'PolygonOffset': {
    'type': 'Normal',
    'func': 'PolygonOffset',
    'states': [
      {
        'name': 'polygon_offset_factor',
        'type': 'GLfloat',
        'enum': 'GL_POLYGON_OFFSET_FACTOR',
        'default': '0.0f',
      },
      {
        'name': 'polygon_offset_units',
        'type': 'GLfloat',
        'enum': 'GL_POLYGON_OFFSET_UNITS',
        'default': '0.0f',
      },
    ],
  },
  'CullFace':  {
    'type': 'Normal',
    'func': 'CullFace',
    'enum': 'GL_CULL_FACE_MODE',
    'states': [
      {
        'name': 'cull_mode',
        'type': 'GLenum',
        'default': 'GL_BACK',
      },
    ],
  },
  'FrontFace': {
    'type': 'Normal',
    'func': 'FrontFace',
    'enum': 'GL_FRONT_FACE',
    'states': [{'name': 'front_face', 'type': 'GLenum', 'default': 'GL_CCW'}],
  },
  'DepthFunc': {
    'type': 'Normal',
    'func': 'DepthFunc',
    'enum': 'GL_DEPTH_FUNC',
    'states': [{'name': 'depth_func', 'type': 'GLenum', 'default': 'GL_LESS'}],
  },
  'DepthRange': {
    'type': 'Normal',
    'func': 'DepthRange',
    'enum': 'GL_DEPTH_RANGE',
    'states': [
      {'name': 'z_near', 'type': 'GLclampf', 'default': '0.0f'},
      {'name': 'z_far', 'type': 'GLclampf', 'default': '1.0f'},
    ],
  },
  'SampleCoverage': {
    'type': 'Normal',
    'func': 'SampleCoverage',
    'states': [
      {
        'name': 'sample_coverage_value',
        'type': 'GLclampf',
        'enum': 'GL_SAMPLE_COVERAGE_VALUE',
        'default': '1.0f',
      },
      {
        'name': 'sample_coverage_invert',
        'type': 'GLboolean',
        'enum': 'GL_SAMPLE_COVERAGE_INVERT',
        'default': 'false',
      },
    ],
  },
  'StencilMask': {
    'type': 'FrontBack',
    'func': 'StencilMaskSeparate',
    'state_flag': 'framebuffer_state_.clear_state_dirty',
    'states': [
      {
        'name': 'stencil_front_writemask',
        'type': 'GLuint',
        'enum': 'GL_STENCIL_WRITEMASK',
        'default': '0xFFFFFFFFU',
        'cached': True,
      },
      {
        'name': 'stencil_back_writemask',
        'type': 'GLuint',
        'enum': 'GL_STENCIL_BACK_WRITEMASK',
        'default': '0xFFFFFFFFU',
        'cached': True,
      },
    ],
  },
  'StencilOp': {
    'type': 'FrontBack',
    'func': 'StencilOpSeparate',
    'states': [
      {
        'name': 'stencil_front_fail_op',
        'type': 'GLenum',
        'enum': 'GL_STENCIL_FAIL',
        'default': 'GL_KEEP',
      },
      {
        'name': 'stencil_front_z_fail_op',
        'type': 'GLenum',
        'enum': 'GL_STENCIL_PASS_DEPTH_FAIL',
        'default': 'GL_KEEP',
      },
      {
        'name': 'stencil_front_z_pass_op',
        'type': 'GLenum',
        'enum': 'GL_STENCIL_PASS_DEPTH_PASS',
        'default': 'GL_KEEP',
      },
      {
        'name': 'stencil_back_fail_op',
        'type': 'GLenum',
        'enum': 'GL_STENCIL_BACK_FAIL',
        'default': 'GL_KEEP',
      },
      {
        'name': 'stencil_back_z_fail_op',
        'type': 'GLenum',
        'enum': 'GL_STENCIL_BACK_PASS_DEPTH_FAIL',
        'default': 'GL_KEEP',
      },
      {
        'name': 'stencil_back_z_pass_op',
        'type': 'GLenum',
        'enum': 'GL_STENCIL_BACK_PASS_DEPTH_PASS',
        'default': 'GL_KEEP',
      },
    ],
  },
  'StencilFunc': {
    'type': 'FrontBack',
    'func': 'StencilFuncSeparate',
    'states': [
      {
        'name': 'stencil_front_func',
        'type': 'GLenum',
        'enum': 'GL_STENCIL_FUNC',
        'default': 'GL_ALWAYS',
      },
      {
        'name': 'stencil_front_ref',
        'type': 'GLint',
        'enum': 'GL_STENCIL_REF',
        'default': '0',
      },
      {
        'name': 'stencil_front_mask',
        'type': 'GLuint',
        'enum': 'GL_STENCIL_VALUE_MASK',
        'default': '0xFFFFFFFFU',
      },
      {
        'name': 'stencil_back_func',
        'type': 'GLenum',
        'enum': 'GL_STENCIL_BACK_FUNC',
        'default': 'GL_ALWAYS',
      },
      {
        'name': 'stencil_back_ref',
        'type': 'GLint',
        'enum': 'GL_STENCIL_BACK_REF',
        'default': '0',
      },
      {
        'name': 'stencil_back_mask',
        'type': 'GLuint',
        'enum': 'GL_STENCIL_BACK_VALUE_MASK',
        'default': '0xFFFFFFFFU',
      },
    ],
  },
  'Hint': {
    'type': 'NamedParameter',
    'func': 'Hint',
    'states': [
      {
        'name': 'hint_generate_mipmap',
        'type': 'GLenum',
        'enum': 'GL_GENERATE_MIPMAP_HINT',
        'default': 'GL_DONT_CARE'
      },
      {
        'name': 'hint_fragment_shader_derivative',
        'type': 'GLenum',
        'enum': 'GL_FRAGMENT_SHADER_DERIVATIVE_HINT_OES',
        'default': 'GL_DONT_CARE',
        'extension_flag': 'oes_standard_derivatives'
      }
    ],
  },
  'PixelStore': {
    'type': 'NamedParameter',
    'func': 'PixelStorei',
    'states': [
      {
        'name': 'pack_alignment',
        'type': 'GLint',
        'enum': 'GL_PACK_ALIGNMENT',
        'default': '4'
      },
      {
        'name': 'unpack_alignment',
        'type': 'GLint',
        'enum': 'GL_UNPACK_ALIGNMENT',
        'default': '4'
      }
    ],
  },
  # TODO: Consider implemenenting these states
  # GL_ACTIVE_TEXTURE
  'LineWidth': {
    'type': 'Normal',
    'func': 'LineWidth',
    'enum': 'GL_LINE_WIDTH',
    'states': [
      {
        'name': 'line_width',
        'type': 'GLfloat',
        'default': '1.0f',
        'range_checks': [{'check': "<= 0.0f", 'test_value': "0.0f"}],
        'nan_check': True,
      }],
  },
  'DepthMask': {
    'type': 'Normal',
    'func': 'DepthMask',
    'enum': 'GL_DEPTH_WRITEMASK',
    'states': [
      {
        'name': 'depth_mask',
        'type': 'GLboolean',
        'default': 'true',
        'cached': True
      },
    ],
    'state_flag': 'framebuffer_state_.clear_state_dirty',
  },
  'Scissor': {
    'type': 'Normal',
    'func': 'Scissor',
    'enum': 'GL_SCISSOR_BOX',
    'states': [
      # NOTE: These defaults reset at GLES2DecoderImpl::Initialization.
      {
        'name': 'scissor_x',
        'type': 'GLint',
        'default': '0',
        'expected': 'kViewportX',
      },
      {
        'name': 'scissor_y',
        'type': 'GLint',
        'default': '0',
        'expected': 'kViewportY',
      },
      {
        'name': 'scissor_width',
        'type': 'GLsizei',
        'default': '1',
        'expected': 'kViewportWidth',
      },
      {
        'name': 'scissor_height',
        'type': 'GLsizei',
        'default': '1',
        'expected': 'kViewportHeight',
      },
    ],
  },
  'Viewport': {
    'type': 'Normal',
    'func': 'Viewport',
    'enum': 'GL_VIEWPORT',
    'states': [
      # NOTE: These defaults reset at GLES2DecoderImpl::Initialization.
      {
        'name': 'viewport_x',
        'type': 'GLint',
        'default': '0',
        'expected': 'kViewportX',
      },
      {
        'name': 'viewport_y',
        'type': 'GLint',
        'default': '0',
        'expected': 'kViewportY',
      },
      {
        'name': 'viewport_width',
        'type': 'GLsizei',
        'default': '1',
        'expected': 'kViewportWidth',
      },
      {
        'name': 'viewport_height',
        'type': 'GLsizei',
        'default': '1',
        'expected': 'kViewportHeight',
      },
    ],
  },
  'MatrixValuesCHROMIUM': {
    'type': 'NamedParameter',
    'func': 'MatrixLoadfEXT',
    'states': [
      { 'enum': 'GL_PATH_MODELVIEW_MATRIX_CHROMIUM',
        'enum_set': 'GL_PATH_MODELVIEW_CHROMIUM',
        'name': 'modelview_matrix',
        'type': 'GLfloat',
        'default': [
          '1.0f', '0.0f','0.0f','0.0f',
          '0.0f', '1.0f','0.0f','0.0f',
          '0.0f', '0.0f','1.0f','0.0f',
          '0.0f', '0.0f','0.0f','1.0f',
        ],
        'extension_flag': 'chromium_path_rendering',
      },
      { 'enum': 'GL_PATH_PROJECTION_MATRIX_CHROMIUM',
        'enum_set': 'GL_PATH_PROJECTION_CHROMIUM',
        'name': 'projection_matrix',
        'type': 'GLfloat',
        'default': [
          '1.0f', '0.0f','0.0f','0.0f',
          '0.0f', '1.0f','0.0f','0.0f',
          '0.0f', '0.0f','1.0f','0.0f',
          '0.0f', '0.0f','0.0f','1.0f',
        ],
        'extension_flag': 'chromium_path_rendering',
      },
    ],
  },
}

# Named type info object represents a named type that is used in OpenGL call
# arguments.  Each named type defines a set of valid OpenGL call arguments.  The
# named types are used in 'cmd_buffer_functions.txt'.
# type: The actual GL type of the named type.
# valid: The list of values that are valid for both the client and the service.
# invalid: Examples of invalid values for the type. At least these values
#          should be tested to be invalid.
# is_complete: The list of valid values of type are final and will not be
#              modified during runtime.
_NAMED_TYPE_INFO = {
  'BlitFilter': {
    'type': 'GLenum',
    'valid': [
      'GL_NEAREST',
      'GL_LINEAR',
    ],
    'invalid': [
      'GL_LINEAR_MIPMAP_LINEAR',
    ],
  },
  'FrameBufferTarget': {
    'type': 'GLenum',
    'valid': [
      'GL_FRAMEBUFFER',
    ],
    'invalid': [
      'GL_DRAW_FRAMEBUFFER' ,
      'GL_READ_FRAMEBUFFER' ,
    ],
  },
  'RenderBufferTarget': {
    'type': 'GLenum',
    'valid': [
      'GL_RENDERBUFFER',
    ],
    'invalid': [
      'GL_FRAMEBUFFER',
    ],
  },
  'BufferTarget': {
    'type': 'GLenum',
    'valid': [
      'GL_ARRAY_BUFFER',
      'GL_ELEMENT_ARRAY_BUFFER',
    ],
    'invalid': [
      'GL_RENDERBUFFER',
    ],
  },
  'BufferUsage': {
    'type': 'GLenum',
    'valid': [
      'GL_STREAM_DRAW',
      'GL_STATIC_DRAW',
      'GL_DYNAMIC_DRAW',
    ],
    'invalid': [
      'GL_STATIC_READ',
    ],
  },
  'CompressedTextureFormat': {
    'type': 'GLenum',
    'valid': [
    ],
  },
  'GLState': {
    'type': 'GLenum',
    'valid': [
      # NOTE: State an Capability entries added later.
      'GL_ACTIVE_TEXTURE',
      'GL_ALIASED_LINE_WIDTH_RANGE',
      'GL_ALIASED_POINT_SIZE_RANGE',
      'GL_ALPHA_BITS',
      'GL_ARRAY_BUFFER_BINDING',
      'GL_BLUE_BITS',
      'GL_COMPRESSED_TEXTURE_FORMATS',
      'GL_CURRENT_PROGRAM',
      'GL_DEPTH_BITS',
      'GL_DEPTH_RANGE',
      'GL_ELEMENT_ARRAY_BUFFER_BINDING',
      'GL_FRAMEBUFFER_BINDING',
      'GL_GENERATE_MIPMAP_HINT',
      'GL_GREEN_BITS',
      'GL_IMPLEMENTATION_COLOR_READ_FORMAT',
      'GL_IMPLEMENTATION_COLOR_READ_TYPE',
      'GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS',
      'GL_MAX_CUBE_MAP_TEXTURE_SIZE',
      'GL_MAX_FRAGMENT_UNIFORM_VECTORS',
      'GL_MAX_RENDERBUFFER_SIZE',
      'GL_MAX_TEXTURE_IMAGE_UNITS',
      'GL_MAX_TEXTURE_SIZE',
      'GL_MAX_VARYING_VECTORS',
      'GL_MAX_VERTEX_ATTRIBS',
      'GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS',
      'GL_MAX_VERTEX_UNIFORM_VECTORS',
      'GL_MAX_VIEWPORT_DIMS',
      'GL_NUM_COMPRESSED_TEXTURE_FORMATS',
      'GL_NUM_SHADER_BINARY_FORMATS',
      'GL_PACK_ALIGNMENT',
      'GL_RED_BITS',
      'GL_RENDERBUFFER_BINDING',
      'GL_SAMPLE_BUFFERS',
      'GL_SAMPLE_COVERAGE_INVERT',
      'GL_SAMPLE_COVERAGE_VALUE',
      'GL_SAMPLES',
      'GL_SCISSOR_BOX',
      'GL_SHADER_BINARY_FORMATS',
      'GL_SHADER_COMPILER',
      'GL_SUBPIXEL_BITS',
      'GL_STENCIL_BITS',
      'GL_TEXTURE_BINDING_2D',
      'GL_TEXTURE_BINDING_CUBE_MAP',
      'GL_UNPACK_ALIGNMENT',
      'GL_UNPACK_FLIP_Y_CHROMIUM',
      'GL_UNPACK_PREMULTIPLY_ALPHA_CHROMIUM',
      'GL_UNPACK_UNPREMULTIPLY_ALPHA_CHROMIUM',
      'GL_BIND_GENERATES_RESOURCE_CHROMIUM',
      # we can add this because we emulate it if the driver does not support it.
      'GL_VERTEX_ARRAY_BINDING_OES',
      'GL_VIEWPORT',
    ],
    'invalid': [
      'GL_FOG_HINT',
    ],
  },
  'GetTexParamTarget': {
    'type': 'GLenum',
    'valid': [
      'GL_TEXTURE_2D',
      'GL_TEXTURE_CUBE_MAP',
    ],
    'invalid': [
      'GL_PROXY_TEXTURE_CUBE_MAP',
    ]
  },
  'TextureTarget': {
    'type': 'GLenum',
    'valid': [
      'GL_TEXTURE_2D',
      'GL_TEXTURE_CUBE_MAP_POSITIVE_X',
      'GL_TEXTURE_CUBE_MAP_NEGATIVE_X',
      'GL_TEXTURE_CUBE_MAP_POSITIVE_Y',
      'GL_TEXTURE_CUBE_MAP_NEGATIVE_Y',
      'GL_TEXTURE_CUBE_MAP_POSITIVE_Z',
      'GL_TEXTURE_CUBE_MAP_NEGATIVE_Z',
    ],
    'invalid': [
      'GL_PROXY_TEXTURE_CUBE_MAP',
    ]
  },
  'TextureBindTarget': {
    'type': 'GLenum',
    'valid': [
      'GL_TEXTURE_2D',
      'GL_TEXTURE_CUBE_MAP',
    ],
    'invalid': [
      'GL_TEXTURE_1D',
      'GL_TEXTURE_3D',
    ],
  },
  'ShaderType': {
    'type': 'GLenum',
    'valid': [
      'GL_VERTEX_SHADER',
      'GL_FRAGMENT_SHADER',
    ],
    'invalid': [
      'GL_GEOMETRY_SHADER',
    ],
  },
  'FaceType': {
    'type': 'GLenum',
    'valid': [
      'GL_FRONT',
      'GL_BACK',
      'GL_FRONT_AND_BACK',
    ],
  },
  'FaceMode': {
    'type': 'GLenum',
    'valid': [
      'GL_CW',
      'GL_CCW',
    ],
  },
  'CmpFunction': {
    'type': 'GLenum',
    'valid': [
      'GL_NEVER',
      'GL_LESS',
      'GL_EQUAL',
      'GL_LEQUAL',
      'GL_GREATER',
      'GL_NOTEQUAL',
      'GL_GEQUAL',
      'GL_ALWAYS',
    ],
  },
  'Equation': {
    'type': 'GLenum',
    'valid': [
      'GL_FUNC_ADD',
      'GL_FUNC_SUBTRACT',
      'GL_FUNC_REVERSE_SUBTRACT',
    ],
    'invalid': [
      'GL_MIN',
      'GL_MAX',
    ],
  },
  'SrcBlendFactor': {
    'type': 'GLenum',
    'valid': [
      'GL_ZERO',
      'GL_ONE',
      'GL_SRC_COLOR',
      'GL_ONE_MINUS_SRC_COLOR',
      'GL_DST_COLOR',
      'GL_ONE_MINUS_DST_COLOR',
      'GL_SRC_ALPHA',
      'GL_ONE_MINUS_SRC_ALPHA',
      'GL_DST_ALPHA',
      'GL_ONE_MINUS_DST_ALPHA',
      'GL_CONSTANT_COLOR',
      'GL_ONE_MINUS_CONSTANT_COLOR',
      'GL_CONSTANT_ALPHA',
      'GL_ONE_MINUS_CONSTANT_ALPHA',
      'GL_SRC_ALPHA_SATURATE',
    ],
  },
  'DstBlendFactor': {
    'type': 'GLenum',
    'valid': [
      'GL_ZERO',
      'GL_ONE',
      'GL_SRC_COLOR',
      'GL_ONE_MINUS_SRC_COLOR',
      'GL_DST_COLOR',
      'GL_ONE_MINUS_DST_COLOR',
      'GL_SRC_ALPHA',
      'GL_ONE_MINUS_SRC_ALPHA',
      'GL_DST_ALPHA',
      'GL_ONE_MINUS_DST_ALPHA',
      'GL_CONSTANT_COLOR',
      'GL_ONE_MINUS_CONSTANT_COLOR',
      'GL_CONSTANT_ALPHA',
      'GL_ONE_MINUS_CONSTANT_ALPHA',
    ],
  },
  'Capability': {
    'type': 'GLenum',
    'valid': ["GL_%s" % cap['name'].upper() for cap in _CAPABILITY_FLAGS],
    'invalid': [
      'GL_CLIP_PLANE0',
      'GL_POINT_SPRITE',
    ],
  },
  'DrawMode': {
    'type': 'GLenum',
    'valid': [
      'GL_POINTS',
      'GL_LINE_STRIP',
      'GL_LINE_LOOP',
      'GL_LINES',
      'GL_TRIANGLE_STRIP',
      'GL_TRIANGLE_FAN',
      'GL_TRIANGLES',
    ],
    'invalid': [
      'GL_QUADS',
      'GL_POLYGON',
    ],
  },
  'IndexType': {
    'type': 'GLenum',
    'valid': [
      'GL_UNSIGNED_BYTE',
      'GL_UNSIGNED_SHORT',
    ],
    'invalid': [
      'GL_UNSIGNED_INT',
      'GL_INT',
    ],
  },
  'GetMaxIndexType': {
    'type': 'GLenum',
    'valid': [
      'GL_UNSIGNED_BYTE',
      'GL_UNSIGNED_SHORT',
      'GL_UNSIGNED_INT',
    ],
    'invalid': [
      'GL_INT',
    ],
  },
  'Attachment': {
    'type': 'GLenum',
    'valid': [
      'GL_COLOR_ATTACHMENT0',
      'GL_DEPTH_ATTACHMENT',
      'GL_STENCIL_ATTACHMENT',
    ],
  },
  'BackbufferAttachment': {
    'type': 'GLenum',
    'valid': [
      'GL_COLOR_EXT',
      'GL_DEPTH_EXT',
      'GL_STENCIL_EXT',
    ],
  },
  'BufferParameter': {
    'type': 'GLenum',
    'valid': [
      'GL_BUFFER_SIZE',
      'GL_BUFFER_USAGE',
    ],
    'invalid': [
      'GL_PIXEL_PACK_BUFFER',
    ],
  },
  'FrameBufferParameter': {
    'type': 'GLenum',
    'valid': [
      'GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE',
      'GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME',
      'GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL',
      'GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE',
    ],
  },
  'MatrixMode': {
    'type': 'GLenum',
    'valid': [
      'GL_PATH_PROJECTION_CHROMIUM',
      'GL_PATH_MODELVIEW_CHROMIUM',
    ],
  },
  'ProgramParameter': {
    'type': 'GLenum',
    'valid': [
      'GL_DELETE_STATUS',
      'GL_LINK_STATUS',
      'GL_VALIDATE_STATUS',
      'GL_INFO_LOG_LENGTH',
      'GL_ATTACHED_SHADERS',
      'GL_ACTIVE_ATTRIBUTES',
      'GL_ACTIVE_ATTRIBUTE_MAX_LENGTH',
      'GL_ACTIVE_UNIFORMS',
      'GL_ACTIVE_UNIFORM_MAX_LENGTH',
    ],
  },
  'QueryObjectParameter': {
    'type': 'GLenum',
    'valid': [
      'GL_QUERY_RESULT_EXT',
      'GL_QUERY_RESULT_AVAILABLE_EXT',
    ],
  },
  'QueryParameter': {
    'type': 'GLenum',
    'valid': [
      'GL_CURRENT_QUERY_EXT',
    ],
  },
  'QueryTarget': {
    'type': 'GLenum',
    'valid': [
      'GL_ANY_SAMPLES_PASSED_EXT',
      'GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT',
      'GL_COMMANDS_ISSUED_CHROMIUM',
      'GL_LATENCY_QUERY_CHROMIUM',
      'GL_ASYNC_PIXEL_UNPACK_COMPLETED_CHROMIUM',
      'GL_ASYNC_PIXEL_PACK_COMPLETED_CHROMIUM',
      'GL_COMMANDS_COMPLETED_CHROMIUM',
    ],
  },
  'RenderBufferParameter': {
    'type': 'GLenum',
    'valid': [
      'GL_RENDERBUFFER_RED_SIZE',
      'GL_RENDERBUFFER_GREEN_SIZE',
      'GL_RENDERBUFFER_BLUE_SIZE',
      'GL_RENDERBUFFER_ALPHA_SIZE',
      'GL_RENDERBUFFER_DEPTH_SIZE',
      'GL_RENDERBUFFER_STENCIL_SIZE',
      'GL_RENDERBUFFER_WIDTH',
      'GL_RENDERBUFFER_HEIGHT',
      'GL_RENDERBUFFER_INTERNAL_FORMAT',
    ],
  },
  'ShaderParameter': {
    'type': 'GLenum',
    'valid': [
      'GL_SHADER_TYPE',
      'GL_DELETE_STATUS',
      'GL_COMPILE_STATUS',
      'GL_INFO_LOG_LENGTH',
      'GL_SHADER_SOURCE_LENGTH',
      'GL_TRANSLATED_SHADER_SOURCE_LENGTH_ANGLE',
    ],
  },
  'ShaderPrecision': {
    'type': 'GLenum',
    'valid': [
      'GL_LOW_FLOAT',
      'GL_MEDIUM_FLOAT',
      'GL_HIGH_FLOAT',
      'GL_LOW_INT',
      'GL_MEDIUM_INT',
      'GL_HIGH_INT',
    ],
  },
  'StringType': {
    'type': 'GLenum',
    'valid': [
      'GL_VENDOR',
      'GL_RENDERER',
      'GL_VERSION',
      'GL_SHADING_LANGUAGE_VERSION',
      'GL_EXTENSIONS',
    ],
  },
  'TextureParameter': {
    'type': 'GLenum',
    'valid': [
      'GL_TEXTURE_MAG_FILTER',
      'GL_TEXTURE_MIN_FILTER',
      'GL_TEXTURE_POOL_CHROMIUM',
      'GL_TEXTURE_WRAP_S',
      'GL_TEXTURE_WRAP_T',
    ],
    'invalid': [
      'GL_GENERATE_MIPMAP',
    ],
  },
  'TexturePool': {
    'type': 'GLenum',
    'valid': [
      'GL_TEXTURE_POOL_MANAGED_CHROMIUM',
      'GL_TEXTURE_POOL_UNMANAGED_CHROMIUM',
    ],
  },
  'TextureWrapMode': {
    'type': 'GLenum',
    'valid': [
      'GL_CLAMP_TO_EDGE',
      'GL_MIRRORED_REPEAT',
      'GL_REPEAT',
    ],
  },
  'TextureMinFilterMode': {
    'type': 'GLenum',
    'valid': [
      'GL_NEAREST',
      'GL_LINEAR',
      'GL_NEAREST_MIPMAP_NEAREST',
      'GL_LINEAR_MIPMAP_NEAREST',
      'GL_NEAREST_MIPMAP_LINEAR',
      'GL_LINEAR_MIPMAP_LINEAR',
    ],
  },
  'TextureMagFilterMode': {
    'type': 'GLenum',
    'valid': [
      'GL_NEAREST',
      'GL_LINEAR',
    ],
  },
  'TextureUsage': {
    'type': 'GLenum',
    'valid': [
      'GL_NONE',
      'GL_FRAMEBUFFER_ATTACHMENT_ANGLE',
    ],
  },
  'VertexAttribute': {
    'type': 'GLenum',
    'valid': [
      # some enum that the decoder actually passes through to GL needs
      # to be the first listed here since it's used in unit tests.
      'GL_VERTEX_ATTRIB_ARRAY_NORMALIZED',
      'GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING',
      'GL_VERTEX_ATTRIB_ARRAY_ENABLED',
      'GL_VERTEX_ATTRIB_ARRAY_SIZE',
      'GL_VERTEX_ATTRIB_ARRAY_STRIDE',
      'GL_VERTEX_ATTRIB_ARRAY_TYPE',
      'GL_CURRENT_VERTEX_ATTRIB',
    ],
  },
  'VertexPointer': {
    'type': 'GLenum',
    'valid': [
      'GL_VERTEX_ATTRIB_ARRAY_POINTER',
    ],
  },
  'HintTarget': {
    'type': 'GLenum',
    'valid': [
      'GL_GENERATE_MIPMAP_HINT',
    ],
    'invalid': [
      'GL_PERSPECTIVE_CORRECTION_HINT',
    ],
  },
  'HintMode': {
    'type': 'GLenum',
    'valid': [
      'GL_FASTEST',
      'GL_NICEST',
      'GL_DONT_CARE',
    ],
  },
  'PixelStore': {
    'type': 'GLenum',
    'valid': [
      'GL_PACK_ALIGNMENT',
      'GL_UNPACK_ALIGNMENT',
      'GL_UNPACK_FLIP_Y_CHROMIUM',
      'GL_UNPACK_PREMULTIPLY_ALPHA_CHROMIUM',
      'GL_UNPACK_UNPREMULTIPLY_ALPHA_CHROMIUM',
    ],
    'invalid': [
      'GL_PACK_SWAP_BYTES',
      'GL_UNPACK_SWAP_BYTES',
    ],
  },
  'PixelStoreAlignment': {
    'type': 'GLint',
    'valid': [
      '1',
      '2',
      '4',
      '8',
    ],
    'invalid': [
      '3',
      '9',
    ],
  },
  'ReadPixelFormat': {
    'type': 'GLenum',
    'valid': [
      'GL_ALPHA',
      'GL_RGB',
      'GL_RGBA',
    ],
  },
  'PixelType': {
    'type': 'GLenum',
    'valid': [
      'GL_UNSIGNED_BYTE',
      'GL_UNSIGNED_SHORT_5_6_5',
      'GL_UNSIGNED_SHORT_4_4_4_4',
      'GL_UNSIGNED_SHORT_5_5_5_1',
    ],
    'invalid': [
      'GL_SHORT',
      'GL_INT',
    ],
  },
  'ReadPixelType': {
    'type': 'GLenum',
    'valid': [
      'GL_UNSIGNED_BYTE',
      'GL_UNSIGNED_SHORT_5_6_5',
      'GL_UNSIGNED_SHORT_4_4_4_4',
      'GL_UNSIGNED_SHORT_5_5_5_1',
    ],
    'invalid': [
      'GL_SHORT',
      'GL_INT',
    ],
  },
  'RenderBufferFormat': {
    'type': 'GLenum',
    'valid': [
      'GL_RGBA4',
      'GL_RGB565',
      'GL_RGB5_A1',
      'GL_DEPTH_COMPONENT16',
      'GL_STENCIL_INDEX8',
    ],
  },
  'ShaderBinaryFormat': {
    'type': 'GLenum',
    'valid': [
    ],
  },
  'StencilOp': {
    'type': 'GLenum',
    'valid': [
      'GL_KEEP',
      'GL_ZERO',
      'GL_REPLACE',
      'GL_INCR',
      'GL_INCR_WRAP',
      'GL_DECR',
      'GL_DECR_WRAP',
      'GL_INVERT',
    ],
  },
  'TextureFormat': {
    'type': 'GLenum',
    'valid': [
      'GL_ALPHA',
      'GL_LUMINANCE',
      'GL_LUMINANCE_ALPHA',
      'GL_RGB',
      'GL_RGBA',
    ],
    'invalid': [
      'GL_BGRA',
      'GL_BGR',
    ],
  },
  'TextureInternalFormat': {
    'type': 'GLenum',
    'valid': [
      'GL_ALPHA',
      'GL_LUMINANCE',
      'GL_LUMINANCE_ALPHA',
      'GL_RGB',
      'GL_RGBA',
    ],
    'invalid': [
      'GL_BGRA',
      'GL_BGR',
    ],
  },
  'TextureInternalFormatStorage': {
    'type': 'GLenum',
    'valid': [
      'GL_RGB565',
      'GL_RGBA4',
      'GL_RGB5_A1',
      'GL_ALPHA8_EXT',
      'GL_LUMINANCE8_EXT',
      'GL_LUMINANCE8_ALPHA8_EXT',
      'GL_RGB8_OES',
      'GL_RGBA8_OES',
    ],
  },
  'ImageInternalFormat': {
    'type': 'GLenum',
    'valid': [
      'GL_RGB',
      'GL_RGBA',
    ],
  },
  'ImageUsage': {
    'type': 'GLenum',
    'valid': [
      'GL_MAP_CHROMIUM',
      'GL_SCANOUT_CHROMIUM'
    ],
  },
  'VertexAttribType': {
    'type': 'GLenum',
    'valid': [
      'GL_BYTE',
      'GL_UNSIGNED_BYTE',
      'GL_SHORT',
      'GL_UNSIGNED_SHORT',
    #  'GL_FIXED',  // This is not available on Desktop GL.
      'GL_FLOAT',
    ],
    'invalid': [
      'GL_DOUBLE',
    ],
  },
  'TextureBorder': {
    'type': 'GLint',
    'is_complete': True,
    'valid': [
      '0',
    ],
    'invalid': [
      '1',
    ],
  },
  'VertexAttribSize': {
    'type': 'GLint',
    'valid': [
      '1',
      '2',
      '3',
      '4',
    ],
    'invalid': [
      '0',
      '5',
    ],
  },
  'ZeroOnly': {
    'type': 'GLint',
    'is_complete': True,
    'valid': [
      '0',
    ],
    'invalid': [
      '1',
    ],
  },
  'FalseOnly': {
    'type': 'GLboolean',
    'is_complete': True,
    'valid': [
      'false',
    ],
    'invalid': [
      'true',
    ],
  },
  'ResetStatus': {
    'type': 'GLenum',
    'valid': [
      'GL_GUILTY_CONTEXT_RESET_ARB',
      'GL_INNOCENT_CONTEXT_RESET_ARB',
      'GL_UNKNOWN_CONTEXT_RESET_ARB',
    ],
  },
}

# This table specifies the different pepper interfaces that are supported for
# GL commands. 'dev' is true if it's a dev interface.
_PEPPER_INTERFACES = [
  {'name': '', 'dev': False},
  {'name': 'InstancedArrays', 'dev': False},
  {'name': 'FramebufferBlit', 'dev': False},
  {'name': 'FramebufferMultisample', 'dev': False},
  {'name': 'ChromiumEnableFeature', 'dev': False},
  {'name': 'ChromiumMapSub', 'dev': False},
  {'name': 'Query', 'dev': False},
  {'name': 'VertexArrayObject', 'dev': False},
  {'name': 'DrawBuffers', 'dev': True},
]

# A function info object specifies the type and other special data for the
# command that will be generated. A base function info object is generated by
# parsing the "cmd_buffer_functions.txt", one for each function in the
# file. These function info objects can be augmented and their values can be
# overridden by adding an object to the table below.
#
# Must match function names specified in "cmd_buffer_functions.txt".
#
# cmd_comment:  A comment added to the cmd format.
# type:         defines which handler will be used to generate code.
# decoder_func: defines which function to call in the decoder to execute the
#               corresponding GL command. If not specified the GL command will
#               be called directly.
# gl_test_func: GL function that is expected to be called when testing.
# cmd_args:     The arguments to use for the command. This overrides generating
#               them based on the GL function arguments.
# gen_cmd:      Whether or not this function geneates a command. Default = True.
# data_transfer_methods: Array of methods that are used for transfering the
#               pointer data.  Possible values: 'immediate', 'shm', 'bucket'.
#               The default is 'immediate' if the command has one pointer
#               argument, otherwise 'shm'. One command is generated for each
#               transfer method. Affects only commands which are not of type
#               'HandWritten', 'GETn' or 'GLcharN'.
#               Note: the command arguments that affect this are the final args,
#               taking cmd_args override into consideration.
# impl_func:    Whether or not to generate the GLES2Implementation part of this
#               command.
# impl_decl:    Whether or not to generate the GLES2Implementation declaration
#               for this command.
# needs_size:   If true a data_size field is added to the command.
# count:        The number of units per element. For PUTn or PUT types.
# unit_test:    If False no service side unit test will be generated.
# client_test:  If False no client side unit test will be generated.
# expectation:  If False the unit test will have no expected calls.
# gen_func:     Name of function that generates GL resource for corresponding
#               bind function.
# states:       array of states that get set by this function corresponding to
#               the given arguments
# state_flag:   name of flag that is set to true when function is called.
# no_gl:        no GL function is called.
# valid_args:   A dictionary of argument indices to args to use in unit tests
#               when they can not be automatically determined.
# pepper_interface: The pepper interface that is used for this extension
# pepper_name:  The name of the function as exposed to pepper.
# pepper_args:  A string representing the argument list (what would appear in
#               C/C++ between the parentheses for the function declaration)
#               that the Pepper API expects for this function. Use this only if
#               the stable Pepper API differs from the GLES2 argument list.
# invalid_test: False if no invalid test needed.
# shadowed:     True = the value is shadowed so no glGetXXX call will be made.
# first_element_only: For PUT types, True if only the first element of an
#               array is used and we end up calling the single value
#               corresponding function. eg. TexParameteriv -> TexParameteri
# extension:    Function is an extension to GL and should not be exposed to
#               pepper unless pepper_interface is defined.
# extension_flag: Function is an extension and should be enabled only when
#               the corresponding feature info flag is enabled. Implies
#               'extension': True.
# not_shared:   For GENn types, True if objects can't be shared between contexts

_FUNCTION_INFO = {
  'ActiveTexture': {
    'decoder_func': 'DoActiveTexture',
    'unit_test': False,
    'impl_func': False,
    'client_test': False,
  },
  'AttachShader': {'decoder_func': 'DoAttachShader'},
  'BindAttribLocation': {
    'type': 'GLchar',
    'data_transfer_methods': ['bucket'],
    'needs_size': True,
  },
  'BindBuffer': {
    'type': 'Bind',
    'decoder_func': 'DoBindBuffer',
    'gen_func': 'GenBuffersARB',
  },
  'BindFramebuffer': {
    'type': 'Bind',
    'decoder_func': 'DoBindFramebuffer',
    'gl_test_func': 'glBindFramebufferEXT',
    'gen_func': 'GenFramebuffersEXT',
    'trace_level': 1,
  },
  'BindRenderbuffer': {
    'type': 'Bind',
    'decoder_func': 'DoBindRenderbuffer',
    'gl_test_func': 'glBindRenderbufferEXT',
    'gen_func': 'GenRenderbuffersEXT',
  },
  'BindTexture': {
    'type': 'Bind',
    'decoder_func': 'DoBindTexture',
    'gen_func': 'GenTextures',
    # TODO(gman): remove this once client side caching works.
    'client_test': False,
    'trace_level': 1,
  },
  'BlitFramebufferCHROMIUM': {
    'decoder_func': 'DoBlitFramebufferCHROMIUM',
    'unit_test': False,
    'extension_flag': 'chromium_framebuffer_multisample',
    'pepper_interface': 'FramebufferBlit',
    'pepper_name': 'BlitFramebufferEXT',
    'defer_reads': True,
    'defer_draws': True,
    'trace_level': 1,
  },
  'BufferData': {
    'type': 'Manual',
    'data_transfer_methods': ['shm'],
    'client_test': False,
  },
  'BufferSubData': {
    'type': 'Data',
    'client_test': False,
    'decoder_func': 'DoBufferSubData',
    'data_transfer_methods': ['shm'],
  },
  'CheckFramebufferStatus': {
    'type': 'Is',
    'decoder_func': 'DoCheckFramebufferStatus',
    'gl_test_func': 'glCheckFramebufferStatusEXT',
    'error_value': 'GL_FRAMEBUFFER_UNSUPPORTED',
    'result': ['GLenum'],
  },
  'Clear': {
    'decoder_func': 'DoClear',
    'defer_draws': True,
    'trace_level': 1,
  },
  'ClearColor': {
    'type': 'StateSet',
    'state': 'ClearColor',
  },
  'ClearDepthf': {
    'type': 'StateSet',
    'state': 'ClearDepthf',
    'decoder_func': 'glClearDepth',
    'gl_test_func': 'glClearDepth',
    'valid_args': {
      '0': '0.5f'
    },
  },
  'ColorMask': {
    'type': 'StateSet',
    'state': 'ColorMask',
    'no_gl': True,
    'expectation': False,
  },
  'ConsumeTextureCHROMIUM': {
    'decoder_func': 'DoConsumeTextureCHROMIUM',
    'impl_func': False,
    'type': 'PUT',
    'count': 64,  # GL_MAILBOX_SIZE_CHROMIUM
    'unit_test': False,
    'client_test': False,
    'extension': "CHROMIUM_texture_mailbox",
    'chromium': True,
    'trace_level': 1,
  },
  'CreateAndConsumeTextureCHROMIUM': {
    'decoder_func': 'DoCreateAndConsumeTextureCHROMIUM',
    'impl_func': False,
    'type': 'HandWritten',
    'data_transfer_methods': ['immediate'],
    'unit_test': False,
    'client_test': False,
    'extension': "CHROMIUM_texture_mailbox",
    'chromium': True,
  },
  'ClearStencil': {
    'type': 'StateSet',
    'state': 'ClearStencil',
  },
  'EnableFeatureCHROMIUM': {
    'type': 'Custom',
    'data_transfer_methods': ['shm'],
    'decoder_func': 'DoEnableFeatureCHROMIUM',
    'expectation': False,
    'cmd_args': 'GLuint bucket_id, GLint* result',
    'result': ['GLint'],
    'extension': True,
    'chromium': True,
    'pepper_interface': 'ChromiumEnableFeature',
  },
  'CompileShader': {'decoder_func': 'DoCompileShader', 'unit_test': False},
  'CompressedTexImage2D': {
    'type': 'Manual',
    'data_transfer_methods': ['bucket', 'shm'],
  },
  'CompressedTexSubImage2D': {
    'type': 'Data',
    'data_transfer_methods': ['bucket', 'shm'],
    'decoder_func': 'DoCompressedTexSubImage2D',
  },
  'CopyTexImage2D': {
    'decoder_func': 'DoCopyTexImage2D',
    'unit_test': False,
    'defer_reads': True,
  },
  'CopyTexSubImage2D': {
    'decoder_func': 'DoCopyTexSubImage2D',
    'defer_reads': True,
  },
  'CreateImageCHROMIUM': {
    'type': 'Manual',
    'cmd_args':
        'ClientBuffer buffer, GLsizei width, GLsizei height, '
        'GLenum internalformat',
    'result': ['GLuint'],
    'client_test': False,
    'gen_cmd': False,
    'expectation': False,
    'extension': True,
    'chromium': True,
  },
  'DestroyImageCHROMIUM': {
    'type': 'Manual',
    'client_test': False,
    'gen_cmd': False,
    'extension': True,
    'chromium': True,
  },
  'CreateGpuMemoryBufferImageCHROMIUM': {
    'type': 'Manual',
    'cmd_args':
        'GLsizei width, GLsizei height, GLenum internalformat, GLenum usage',
    'result': ['GLuint'],
    'client_test': False,
    'gen_cmd': False,
    'expectation': False,
    'extension': True,
    'chromium': True,
  },
  'CreateProgram': {
    'type': 'Create',
    'client_test': False,
  },
  'CreateShader': {
    'type': 'Create',
    'client_test': False,
  },
  'BlendColor': {
    'type': 'StateSet',
    'state': 'BlendColor',
  },
  'BlendEquation': {
    'type': 'StateSetRGBAlpha',
    'state': 'BlendEquation',
    'valid_args': {
      '0': 'GL_FUNC_SUBTRACT'
    },
  },
  'BlendEquationSeparate': {
    'type': 'StateSet',
    'state': 'BlendEquation',
    'valid_args': {
      '0': 'GL_FUNC_SUBTRACT'
    },
  },
  'BlendFunc': {
    'type': 'StateSetRGBAlpha',
    'state': 'BlendFunc',
  },
  'BlendFuncSeparate': {
    'type': 'StateSet',
    'state': 'BlendFunc',
  },
  'BlendBarrierKHR': {
    'gl_test_func': 'glBlendBarrierKHR',
    'extension': True,
    'extension_flag': 'blend_equation_advanced',
    'client_test': False,
  },
  'SampleCoverage': {'decoder_func': 'DoSampleCoverage'},
  'StencilFunc': {
    'type': 'StateSetFrontBack',
    'state': 'StencilFunc',
  },
  'StencilFuncSeparate': {
    'type': 'StateSetFrontBackSeparate',
    'state': 'StencilFunc',
  },
  'StencilOp': {
    'type': 'StateSetFrontBack',
    'state': 'StencilOp',
    'valid_args': {
      '1': 'GL_INCR'
    },
  },
  'StencilOpSeparate': {
    'type': 'StateSetFrontBackSeparate',
    'state': 'StencilOp',
    'valid_args': {
      '1': 'GL_INCR'
    },
  },
  'Hint': {
    'type': 'StateSetNamedParameter',
    'state': 'Hint',
  },
  'CullFace': {'type': 'StateSet', 'state': 'CullFace'},
  'FrontFace': {'type': 'StateSet', 'state': 'FrontFace'},
  'DepthFunc': {'type': 'StateSet', 'state': 'DepthFunc'},
  'LineWidth': {
    'type': 'StateSet',
    'state': 'LineWidth',
    'valid_args': {
      '0': '0.5f'
    },
  },
  'PolygonOffset': {
    'type': 'StateSet',
    'state': 'PolygonOffset',
  },
  'DeleteBuffers': {
    'type': 'DELn',
    'gl_test_func': 'glDeleteBuffersARB',
    'resource_type': 'Buffer',
    'resource_types': 'Buffers',
  },
  'DeleteFramebuffers': {
    'type': 'DELn',
    'gl_test_func': 'glDeleteFramebuffersEXT',
    'resource_type': 'Framebuffer',
    'resource_types': 'Framebuffers',
  },
  'DeleteProgram': {'type': 'Delete', 'decoder_func': 'DoDeleteProgram'},
  'DeleteRenderbuffers': {
    'type': 'DELn',
    'gl_test_func': 'glDeleteRenderbuffersEXT',
    'resource_type': 'Renderbuffer',
    'resource_types': 'Renderbuffers',
  },
  'DeleteShader': {'type': 'Delete', 'decoder_func': 'DoDeleteShader'},
  'DeleteTextures': {
    'type': 'DELn',
    'resource_type': 'Texture',
    'resource_types': 'Textures',
  },
  'DepthRangef': {
    'decoder_func': 'DoDepthRangef',
    'gl_test_func': 'glDepthRange',
  },
  'DepthMask': {
    'type': 'StateSet',
    'state': 'DepthMask',
    'no_gl': True,
    'expectation': False,
  },
  'DetachShader': {'decoder_func': 'DoDetachShader'},
  'Disable': {
    'decoder_func': 'DoDisable',
    'impl_func': False,
    'client_test': False,
  },
  'DisableVertexAttribArray': {
    'decoder_func': 'DoDisableVertexAttribArray',
    'impl_decl': False,
  },
  'DrawArrays': {
    'type': 'Manual',
    'cmd_args': 'GLenumDrawMode mode, GLint first, GLsizei count',
    'defer_draws': True,
    'trace_level': 2,
  },
  'DrawElements': {
    'type': 'Manual',
    'cmd_args': 'GLenumDrawMode mode, GLsizei count, '
                'GLenumIndexType type, GLuint index_offset',
    'client_test': False,
    'defer_draws': True,
    'trace_level': 2,
  },
  'Enable': {
    'decoder_func': 'DoEnable',
    'impl_func': False,
    'client_test': False,
  },
  'EnableVertexAttribArray': {
    'decoder_func': 'DoEnableVertexAttribArray',
    'impl_decl': False,
  },
  'Finish': {
    'impl_func': False,
    'client_test': False,
    'decoder_func': 'DoFinish',
    'defer_reads': True,
  },
  'Flush': {
    'impl_func': False,
    'decoder_func': 'DoFlush',
  },
  'FramebufferRenderbuffer': {
    'decoder_func': 'DoFramebufferRenderbuffer',
    'gl_test_func': 'glFramebufferRenderbufferEXT',
  },
  'FramebufferTexture2D': {
    'decoder_func': 'DoFramebufferTexture2D',
    'gl_test_func': 'glFramebufferTexture2DEXT',
    'trace_level': 1,
  },
  'FramebufferTexture2DMultisampleEXT': {
    'decoder_func': 'DoFramebufferTexture2DMultisample',
    'gl_test_func': 'glFramebufferTexture2DMultisampleEXT',
    'expectation': False,
    'unit_test': False,
    'extension_flag': 'multisampled_render_to_texture',
    'trace_level': 1,
  },
  'GenerateMipmap': {
    'decoder_func': 'DoGenerateMipmap',
    'gl_test_func': 'glGenerateMipmapEXT',
  },
  'GenBuffers': {
    'type': 'GENn',
    'gl_test_func': 'glGenBuffersARB',
    'resource_type': 'Buffer',
    'resource_types': 'Buffers',
  },
  'GenMailboxCHROMIUM': {
    'type': 'HandWritten',
    'impl_func': False,
    'extension': "CHROMIUM_texture_mailbox",
    'chromium': True,
  },
  'GenFramebuffers': {
    'type': 'GENn',
    'gl_test_func': 'glGenFramebuffersEXT',
    'resource_type': 'Framebuffer',
    'resource_types': 'Framebuffers',
  },
  'GenRenderbuffers': {
    'type': 'GENn', 'gl_test_func': 'glGenRenderbuffersEXT',
    'resource_type': 'Renderbuffer',
    'resource_types': 'Renderbuffers',
  },
  'GenTextures': {
    'type': 'GENn',
    'gl_test_func': 'glGenTextures',
    'resource_type': 'Texture',
    'resource_types': 'Textures',
  },
  'GetActiveAttrib': {
    'type': 'Custom',
    'data_transfer_methods': ['shm'],
    'cmd_args':
        'GLidProgram program, GLuint index, uint32_t name_bucket_id, '
        'void* result',
    'result': [
      'int32_t success',
      'int32_t size',
      'uint32_t type',
    ],
  },
  'GetActiveUniform': {
    'type': 'Custom',
    'data_transfer_methods': ['shm'],
    'cmd_args':
        'GLidProgram program, GLuint index, uint32_t name_bucket_id, '
        'void* result',
    'result': [
      'int32_t success',
      'int32_t size',
      'uint32_t type',
    ],
  },
  'GetAttachedShaders': {
    'type': 'Custom',
    'data_transfer_methods': ['shm'],
    'cmd_args': 'GLidProgram program, void* result, uint32_t result_size',
    'result': ['SizedResult<GLuint>'],
  },
  'GetAttribLocation': {
    'type': 'Custom',
    'data_transfer_methods': ['shm'],
    'cmd_args':
        'GLidProgram program, uint32_t name_bucket_id, GLint* location',
    'result': ['GLint'],
    'error_return': -1, # http://www.opengl.org/sdk/docs/man/xhtml/glGetAttribLocation.xml
  },
  'GetBooleanv': {
    'type': 'GETn',
    'result': ['SizedResult<GLboolean>'],
    'decoder_func': 'DoGetBooleanv',
    'gl_test_func': 'glGetBooleanv',
  },
  'GetBufferParameteriv': {
    'type': 'GETn',
    'result': ['SizedResult<GLint>'],
    'decoder_func': 'DoGetBufferParameteriv',
    'expectation': False,
    'shadowed': True,
  },
  'GetError': {
    'type': 'Is',
    'decoder_func': 'GetErrorState()->GetGLError',
    'impl_func': False,
    'result': ['GLenum'],
    'client_test': False,
  },
  'GetFloatv': {
    'type': 'GETn',
    'result': ['SizedResult<GLfloat>'],
    'decoder_func': 'DoGetFloatv',
    'gl_test_func': 'glGetFloatv',
  },
  'GetFramebufferAttachmentParameteriv': {
    'type': 'GETn',
    'decoder_func': 'DoGetFramebufferAttachmentParameteriv',
    'gl_test_func': 'glGetFramebufferAttachmentParameterivEXT',
    'result': ['SizedResult<GLint>'],
  },
  'GetIntegerv': {
    'type': 'GETn',
    'result': ['SizedResult<GLint>'],
    'decoder_func': 'DoGetIntegerv',
    'client_test': False,
  },
  'GetMaxValueInBufferCHROMIUM': {
    'type': 'Is',
    'decoder_func': 'DoGetMaxValueInBufferCHROMIUM',
    'result': ['GLuint'],
    'unit_test': False,
    'client_test': False,
    'extension': True,
    'chromium': True,
    'impl_func': False,
  },
  'GetMultipleIntegervCHROMIUM': {
    'type': 'Custom',
    'data_transfer_methods': ['shm'],
    'expectation': False,
    'extension': True,
    'chromium': True,
    'client_test': False,
  },
  'GetProgramiv': {
    'type': 'GETn',
    'decoder_func': 'DoGetProgramiv',
    'result': ['SizedResult<GLint>'],
    'expectation': False,
  },
  'GetProgramInfoCHROMIUM': {
    'type': 'Custom',
    'expectation': False,
    'impl_func': False,
    'extension': True,
    'chromium': True,
    'client_test': False,
    'cmd_args': 'GLidProgram program, uint32_t bucket_id',
    'result': [
      'uint32_t link_status',
      'uint32_t num_attribs',
      'uint32_t num_uniforms',
    ],
  },
  'GetProgramInfoLog': {
    'type': 'STRn',
    'expectation': False,
  },
  'GetRenderbufferParameteriv': {
    'type': 'GETn',
    'decoder_func': 'DoGetRenderbufferParameteriv',
    'gl_test_func': 'glGetRenderbufferParameterivEXT',
    'result': ['SizedResult<GLint>'],
  },
  'GetShaderiv': {
    'type': 'GETn',
    'decoder_func': 'DoGetShaderiv',
    'result': ['SizedResult<GLint>'],
  },
  'GetShaderInfoLog': {
    'type': 'STRn',
    'get_len_func': 'glGetShaderiv',
    'get_len_enum': 'GL_INFO_LOG_LENGTH',
    'unit_test': False,
  },
  'GetShaderPrecisionFormat': {
    'type': 'Custom',
    'data_transfer_methods': ['shm'],
    'cmd_args':
      'GLenumShaderType shadertype, GLenumShaderPrecision precisiontype, '
      'void* result',
    'result': [
      'int32_t success',
      'int32_t min_range',
      'int32_t max_range',
      'int32_t precision',
    ],
  },
  'GetShaderSource': {
    'type': 'STRn',
    'get_len_func': 'DoGetShaderiv',
    'get_len_enum': 'GL_SHADER_SOURCE_LENGTH',
    'unit_test': False,
    'client_test': False,
    },
  'GetString': {
    'type': 'Custom',
    'client_test': False,
    'cmd_args': 'GLenumStringType name, uint32_t bucket_id',
  },
  'GetTexParameterfv': {
    'type': 'GETn',
    'decoder_func': 'DoGetTexParameterfv',
    'result': ['SizedResult<GLfloat>']
  },
  'GetTexParameteriv': {
    'type': 'GETn',
    'decoder_func': 'DoGetTexParameteriv',
    'result': ['SizedResult<GLint>']
  },
  'GetTranslatedShaderSourceANGLE': {
    'type': 'STRn',
    'get_len_func': 'DoGetShaderiv',
    'get_len_enum': 'GL_TRANSLATED_SHADER_SOURCE_LENGTH_ANGLE',
    'unit_test': False,
    'extension': True,
    },
  'GetUniformfv': {
    'type': 'Custom',
    'data_transfer_methods': ['shm'],
    'result': ['SizedResult<GLfloat>'],
  },
  'GetUniformiv': {
    'type': 'Custom',
    'data_transfer_methods': ['shm'],
    'result': ['SizedResult<GLint>'],
  },
  'GetUniformLocation': {
    'type': 'Custom',
    'data_transfer_methods': ['shm'],
    'cmd_args':
        'GLidProgram program, uint32_t name_bucket_id, GLint* location',
    'result': ['GLint'],
    'error_return': -1, # http://www.opengl.org/sdk/docs/man/xhtml/glGetUniformLocation.xml
  },
  'GetVertexAttribfv': {
    'type': 'GETn',
    'result': ['SizedResult<GLfloat>'],
    'impl_decl': False,
    'decoder_func': 'DoGetVertexAttribfv',
    'expectation': False,
    'client_test': False,
  },
  'GetVertexAttribiv': {
    'type': 'GETn',
    'result': ['SizedResult<GLint>'],
    'impl_decl': False,
    'decoder_func': 'DoGetVertexAttribiv',
    'expectation': False,
    'client_test': False,
  },
  'GetVertexAttribPointerv': {
    'type': 'Custom',
    'data_transfer_methods': ['shm'],
    'result': ['SizedResult<GLuint>'],
    'client_test': False,
  },
  'IsBuffer': {
    'type': 'Is',
    'decoder_func': 'DoIsBuffer',
    'expectation': False,
  },
  'IsEnabled': {
    'type': 'Is',
    'decoder_func': 'DoIsEnabled',
    'impl_func': False,
    'expectation': False,
  },
  'IsFramebuffer': {
    'type': 'Is',
    'decoder_func': 'DoIsFramebuffer',
    'expectation': False,
  },
  'IsProgram': {
    'type': 'Is',
    'decoder_func': 'DoIsProgram',
    'expectation': False,
  },
  'IsRenderbuffer': {
    'type': 'Is',
    'decoder_func': 'DoIsRenderbuffer',
    'expectation': False,
  },
  'IsShader': {
    'type': 'Is',
    'decoder_func': 'DoIsShader',
    'expectation': False,
  },
  'IsTexture': {
    'type': 'Is',
    'decoder_func': 'DoIsTexture',
    'expectation': False,
  },
  'LinkProgram': {
    'decoder_func': 'DoLinkProgram',
    'impl_func':  False,
  },
  'MapBufferCHROMIUM': {
    'gen_cmd': False,
    'extension': True,
    'chromium': True,
    'client_test': False,
  },
  'MapBufferSubDataCHROMIUM': {
    'gen_cmd': False,
    'extension': True,
    'chromium': True,
    'client_test': False,
    'pepper_interface': 'ChromiumMapSub',
  },
  'MapTexSubImage2DCHROMIUM': {
    'gen_cmd': False,
    'extension': True,
    'chromium': True,
    'client_test': False,
    'pepper_interface': 'ChromiumMapSub',
  },
  'PixelStorei': {'type': 'Manual'},
  'PostSubBufferCHROMIUM': {
      'type': 'Custom',
      'impl_func': False,
      'unit_test': False,
      'client_test': False,
      'extension': True,
      'chromium': True,
  },
  'ProduceTextureCHROMIUM': {
    'decoder_func': 'DoProduceTextureCHROMIUM',
    'impl_func': False,
    'type': 'PUT',
    'count': 64,  # GL_MAILBOX_SIZE_CHROMIUM
    'unit_test': False,
    'client_test': False,
    'extension': "CHROMIUM_texture_mailbox",
    'chromium': True,
    'trace_level': 1,
  },
  'ProduceTextureDirectCHROMIUM': {
    'decoder_func': 'DoProduceTextureDirectCHROMIUM',
    'impl_func': False,
    'type': 'PUT',
    'count': 64,  # GL_MAILBOX_SIZE_CHROMIUM
    'unit_test': False,
    'client_test': False,
    'extension': "CHROMIUM_texture_mailbox",
    'chromium': True,
    'trace_level': 1,
  },
  'RenderbufferStorage': {
    'decoder_func': 'DoRenderbufferStorage',
    'gl_test_func': 'glRenderbufferStorageEXT',
    'expectation': False,
  },
  'RenderbufferStorageMultisampleCHROMIUM': {
    'cmd_comment':
        '// GL_CHROMIUM_framebuffer_multisample\n',
    'decoder_func': 'DoRenderbufferStorageMultisampleCHROMIUM',
    'gl_test_func': 'glRenderbufferStorageMultisampleCHROMIUM',
    'expectation': False,
    'unit_test': False,
    'extension_flag': 'chromium_framebuffer_multisample',
    'pepper_interface': 'FramebufferMultisample',
    'pepper_name': 'RenderbufferStorageMultisampleEXT',
  },
  'RenderbufferStorageMultisampleEXT': {
    'cmd_comment':
        '// GL_EXT_multisampled_render_to_texture\n',
    'decoder_func': 'DoRenderbufferStorageMultisampleEXT',
    'gl_test_func': 'glRenderbufferStorageMultisampleEXT',
    'expectation': False,
    'unit_test': False,
    'extension_flag': 'multisampled_render_to_texture',
  },
  'ReadPixels': {
    'cmd_comment':
        '// ReadPixels has the result separated from the pixel buffer so that\n'
        '// it is easier to specify the result going to some specific place\n'
        '// that exactly fits the rectangle of pixels.\n',
    'type': 'Custom',
    'data_transfer_methods': ['shm'],
    'impl_func': False,
    'client_test': False,
    'cmd_args':
        'GLint x, GLint y, GLsizei width, GLsizei height, '
        'GLenumReadPixelFormat format, GLenumReadPixelType type, '
        'uint32_t pixels_shm_id, uint32_t pixels_shm_offset, '
        'uint32_t result_shm_id, uint32_t result_shm_offset, '
        'GLboolean async',
    'result': ['uint32_t'],
    'defer_reads': True,
  },
  'ReleaseShaderCompiler': {
    'decoder_func': 'DoReleaseShaderCompiler',
    'unit_test': False,
  },
  'ShaderBinary': {
    'type': 'Custom',
    'client_test': False,
  },
  'ShaderSource': {
    'type': 'Manual',
    'data_transfer_methods': ['bucket'],
    'needs_size': True,
    'client_test': False,
    'cmd_args':
        'GLuint shader, const char* data',
    'pepper_args':
        'GLuint shader, GLsizei count, const char** str, const GLint* length',
  },
  'StencilMask': {
    'type': 'StateSetFrontBack',
    'state': 'StencilMask',
    'no_gl': True,
    'expectation': False,
  },
  'StencilMaskSeparate': {
    'type': 'StateSetFrontBackSeparate',
    'state': 'StencilMask',
    'no_gl': True,
    'expectation': False,
  },
  'SwapBuffers': {
    'impl_func': False,
    'decoder_func': 'DoSwapBuffers',
    'unit_test': False,
    'client_test': False,
    'extension': True,
    'trace_level': 1,
  },
  'TexImage2D': {
    'type': 'Manual',
    'data_transfer_methods': ['shm'],
    'client_test': False,
  },
  'TexParameterf': {
    'decoder_func': 'DoTexParameterf',
    'valid_args': {
      '2': 'GL_NEAREST'
    },
  },
  'TexParameteri': {
    'decoder_func': 'DoTexParameteri',
    'valid_args': {
      '2': 'GL_NEAREST'
    },
  },
  'TexParameterfv': {
    'type': 'PUT',
    'data_value': 'GL_NEAREST',
    'count': 1,
    'decoder_func': 'DoTexParameterfv',
    'gl_test_func': 'glTexParameterf',
    'first_element_only': True,
  },
  'TexParameteriv': {
    'type': 'PUT',
    'data_value': 'GL_NEAREST',
    'count': 1,
    'decoder_func': 'DoTexParameteriv',
    'gl_test_func': 'glTexParameteri',
    'first_element_only': True,
  },
  'TexSubImage2D': {
    'type': 'Manual',
    'data_transfer_methods': ['shm'],
    'client_test': False,
    'cmd_args': 'GLenumTextureTarget target, GLint level, '
                'GLint xoffset, GLint yoffset, '
                'GLsizei width, GLsizei height, '
                'GLenumTextureFormat format, GLenumPixelType type, '
                'const void* pixels, GLboolean internal'
  },
  'Uniform1f': {'type': 'PUTXn', 'count': 1},
  'Uniform1fv': {
    'type': 'PUTn',
    'count': 1,
    'decoder_func': 'DoUniform1fv',
  },
  'Uniform1i': {'decoder_func': 'DoUniform1i', 'unit_test': False},
  'Uniform1iv': {
    'type': 'PUTn',
    'count': 1,
    'decoder_func': 'DoUniform1iv',
    'unit_test': False,
  },
  'Uniform2i': {'type': 'PUTXn', 'count': 2},
  'Uniform2f': {'type': 'PUTXn', 'count': 2},
  'Uniform2fv': {
    'type': 'PUTn',
    'count': 2,
    'decoder_func': 'DoUniform2fv',
  },
  'Uniform2iv': {
    'type': 'PUTn',
    'count': 2,
    'decoder_func': 'DoUniform2iv',
  },
  'Uniform3i': {'type': 'PUTXn', 'count': 3},
  'Uniform3f': {'type': 'PUTXn', 'count': 3},
  'Uniform3fv': {
    'type': 'PUTn',
    'count': 3,
    'decoder_func': 'DoUniform3fv',
  },
  'Uniform3iv': {
    'type': 'PUTn',
    'count': 3,
    'decoder_func': 'DoUniform3iv',
  },
  'Uniform4i': {'type': 'PUTXn', 'count': 4},
  'Uniform4f': {'type': 'PUTXn', 'count': 4},
  'Uniform4fv': {
    'type': 'PUTn',
    'count': 4,
    'decoder_func': 'DoUniform4fv',
  },
  'Uniform4iv': {
    'type': 'PUTn',
    'count': 4,
    'decoder_func': 'DoUniform4iv',
  },
  'UniformMatrix2fv': {
    'type': 'PUTn',
    'count': 4,
    'decoder_func': 'DoUniformMatrix2fv',
  },
  'UniformMatrix3fv': {
    'type': 'PUTn',
    'count': 9,
    'decoder_func': 'DoUniformMatrix3fv',
  },
  'UniformMatrix4fv': {
    'type': 'PUTn',
    'count': 16,
    'decoder_func': 'DoUniformMatrix4fv',
  },
  'UnmapBufferCHROMIUM': {
    'gen_cmd': False,
    'extension': True,
    'chromium': True,
    'client_test': False,
  },
  'UnmapBufferSubDataCHROMIUM': {
    'gen_cmd': False,
    'extension': True,
    'chromium': True,
    'client_test': False,
    'pepper_interface': 'ChromiumMapSub',
  },
  'UnmapTexSubImage2DCHROMIUM': {
    'gen_cmd': False,
    'extension': True,
    'chromium': True,
    'client_test': False,
    'pepper_interface': 'ChromiumMapSub',
  },
  'UseProgram': {
    'type': 'Bind',
    'decoder_func': 'DoUseProgram',
  },
  'ValidateProgram': {'decoder_func': 'DoValidateProgram'},
  'VertexAttrib1f': {'decoder_func': 'DoVertexAttrib1f'},
  'VertexAttrib1fv': {
    'type': 'PUT',
    'count': 1,
    'decoder_func': 'DoVertexAttrib1fv',
  },
  'VertexAttrib2f': {'decoder_func': 'DoVertexAttrib2f'},
  'VertexAttrib2fv': {
    'type': 'PUT',
    'count': 2,
    'decoder_func': 'DoVertexAttrib2fv',
  },
  'VertexAttrib3f': {'decoder_func': 'DoVertexAttrib3f'},
  'VertexAttrib3fv': {
    'type': 'PUT',
    'count': 3,
    'decoder_func': 'DoVertexAttrib3fv',
  },
  'VertexAttrib4f': {'decoder_func': 'DoVertexAttrib4f'},
  'VertexAttrib4fv': {
    'type': 'PUT',
    'count': 4,
    'decoder_func': 'DoVertexAttrib4fv',
  },
  'VertexAttribPointer': {
      'type': 'Manual',
      'cmd_args': 'GLuint indx, GLintVertexAttribSize size, '
                  'GLenumVertexAttribType type, GLboolean normalized, '
                  'GLsizei stride, GLuint offset',
      'client_test': False,
  },
  'Scissor': {
    'type': 'StateSet',
    'state': 'Scissor',
  },
  'Viewport': {
    'decoder_func': 'DoViewport',
  },
  'ResizeCHROMIUM': {
      'type': 'Custom',
      'impl_func': False,
      'unit_test': False,
      'extension': True,
      'chromium': True,
  },
  'GetRequestableExtensionsCHROMIUM': {
    'type': 'Custom',
    'impl_func': False,
    'cmd_args': 'uint32_t bucket_id',
    'extension': True,
    'chromium': True,
  },
  'RequestExtensionCHROMIUM': {
    'type': 'Custom',
    'impl_func': False,
    'client_test': False,
    'cmd_args': 'uint32_t bucket_id',
    'extension': True,
    'chromium': True,
  },
  'RateLimitOffscreenContextCHROMIUM': {
    'gen_cmd': False,
    'extension': True,
    'chromium': True,
    'client_test': False,
  },
  'CreateStreamTextureCHROMIUM':  {
    'type': 'HandWritten',
    'impl_func': False,
    'gen_cmd': False,
    'extension': True,
    'chromium': True,
  },
  'TexImageIOSurface2DCHROMIUM': {
    'decoder_func': 'DoTexImageIOSurface2DCHROMIUM',
    'unit_test': False,
    'extension': True,
    'chromium': True,
  },
  'CopyTextureCHROMIUM': {
    'decoder_func': 'DoCopyTextureCHROMIUM',
    'unit_test': False,
    'extension': True,
    'chromium': True,
  },
  'TexStorage2DEXT': {
    'unit_test': False,
    'extension': True,
    'decoder_func': 'DoTexStorage2DEXT',
  },
  'DrawArraysInstancedANGLE': {
    'type': 'Manual',
    'cmd_args': 'GLenumDrawMode mode, GLint first, GLsizei count, '
                'GLsizei primcount',
    'extension': True,
    'unit_test': False,
    'pepper_interface': 'InstancedArrays',
    'defer_draws': True,
  },
  'DrawBuffersEXT': {
    'type': 'PUTn',
    'decoder_func': 'DoDrawBuffersEXT',
    'count': 1,
    'client_test': False,
    'unit_test': False,
    # could use 'extension_flag': 'ext_draw_buffers' but currently expected to
    # work without.
    'extension': True,
    'pepper_interface': 'DrawBuffers',
  },
  'DrawElementsInstancedANGLE': {
    'type': 'Manual',
    'cmd_args': 'GLenumDrawMode mode, GLsizei count, '
                'GLenumIndexType type, GLuint index_offset, GLsizei primcount',
    'extension': True,
    'unit_test': False,
    'client_test': False,
    'pepper_interface': 'InstancedArrays',
    'defer_draws': True,
  },
  'VertexAttribDivisorANGLE': {
    'type': 'Manual',
    'cmd_args': 'GLuint index, GLuint divisor',
    'extension': True,
    'unit_test': False,
    'pepper_interface': 'InstancedArrays',
  },
  'GenQueriesEXT': {
    'type': 'GENn',
    'gl_test_func': 'glGenQueriesARB',
    'resource_type': 'Query',
    'resource_types': 'Queries',
    'unit_test': False,
    'pepper_interface': 'Query',
    'not_shared': 'True',
  },
  'DeleteQueriesEXT': {
    'type': 'DELn',
    'gl_test_func': 'glDeleteQueriesARB',
    'resource_type': 'Query',
    'resource_types': 'Queries',
    'unit_test': False,
    'pepper_interface': 'Query',
  },
  'IsQueryEXT': {
    'gen_cmd': False,
    'client_test': False,
    'pepper_interface': 'Query',
  },
  'BeginQueryEXT': {
    'type': 'Manual',
    'cmd_args': 'GLenumQueryTarget target, GLidQuery id, void* sync_data',
    'data_transfer_methods': ['shm'],
    'gl_test_func': 'glBeginQuery',
    'pepper_interface': 'Query',
  },
  'EndQueryEXT': {
    'type': 'Manual',
    'cmd_args': 'GLenumQueryTarget target, GLuint submit_count',
    'gl_test_func': 'glEndnQuery',
    'client_test': False,
    'pepper_interface': 'Query',
  },
  'GetQueryivEXT': {
    'gen_cmd': False,
    'client_test': False,
    'gl_test_func': 'glGetQueryiv',
    'pepper_interface': 'Query',
  },
  'GetQueryObjectuivEXT': {
    'gen_cmd': False,
    'client_test': False,
    'gl_test_func': 'glGetQueryObjectuiv',
    'pepper_interface': 'Query',
  },
  'BindUniformLocationCHROMIUM': {
    'type': 'GLchar',
    'extension': True,
    'data_transfer_methods': ['bucket'],
    'needs_size': True,
    'gl_test_func': 'DoBindUniformLocationCHROMIUM',
  },
  'InsertEventMarkerEXT': {
    'type': 'GLcharN',
    'decoder_func': 'DoInsertEventMarkerEXT',
    'expectation': False,
    'extension': True,
  },
  'PushGroupMarkerEXT': {
    'type': 'GLcharN',
    'decoder_func': 'DoPushGroupMarkerEXT',
    'expectation': False,
    'extension': True,
  },
  'PopGroupMarkerEXT': {
    'decoder_func': 'DoPopGroupMarkerEXT',
    'expectation': False,
    'extension': True,
    'impl_func': False,
  },

  'GenVertexArraysOES': {
    'type': 'GENn',
    'extension': True,
    'gl_test_func': 'glGenVertexArraysOES',
    'resource_type': 'VertexArray',
    'resource_types': 'VertexArrays',
    'unit_test': False,
    'pepper_interface': 'VertexArrayObject',
  },
  'BindVertexArrayOES': {
    'type': 'Bind',
    'extension': True,
    'gl_test_func': 'glBindVertexArrayOES',
    'decoder_func': 'DoBindVertexArrayOES',
    'gen_func': 'GenVertexArraysOES',
    'unit_test': False,
    'client_test': False,
    'pepper_interface': 'VertexArrayObject',
  },
  'DeleteVertexArraysOES': {
    'type': 'DELn',
    'extension': True,
    'gl_test_func': 'glDeleteVertexArraysOES',
    'resource_type': 'VertexArray',
    'resource_types': 'VertexArrays',
    'unit_test': False,
    'pepper_interface': 'VertexArrayObject',
  },
  'IsVertexArrayOES': {
    'type': 'Is',
    'extension': True,
    'gl_test_func': 'glIsVertexArrayOES',
    'decoder_func': 'DoIsVertexArrayOES',
    'expectation': False,
    'unit_test': False,
    'pepper_interface': 'VertexArrayObject',
  },
  'BindTexImage2DCHROMIUM': {
    'decoder_func': 'DoBindTexImage2DCHROMIUM',
    'unit_test': False,
    'extension': True,
    'chromium': True,
  },
  'ReleaseTexImage2DCHROMIUM': {
    'decoder_func': 'DoReleaseTexImage2DCHROMIUM',
    'unit_test': False,
    'extension': True,
    'chromium': True,
  },
  'ShallowFinishCHROMIUM': {
    'impl_func': False,
    'gen_cmd': False,
    'extension': True,
    'chromium': True,
    'client_test': False,
  },
  'ShallowFlushCHROMIUM': {
    'impl_func': False,
    'gen_cmd': False,
    'extension': True,
    'chromium': True,
    'client_test': False,
  },
  'TraceBeginCHROMIUM': {
    'type': 'Custom',
    'impl_func': False,
    'client_test': False,
    'cmd_args': 'GLuint bucket_id',
    'extension': True,
    'chromium': True,
  },
  'TraceEndCHROMIUM': {
    'impl_func': False,
    'client_test': False,
    'decoder_func': 'DoTraceEndCHROMIUM',
    'unit_test': False,
    'extension': True,
    'chromium': True,
  },
  'AsyncTexImage2DCHROMIUM': {
    'type': 'Manual',
    'data_transfer_methods': ['shm'],
    'client_test': False,
    'cmd_args': 'GLenumTextureTarget target, GLint level, '
        'GLintTextureInternalFormat internalformat, '
        'GLsizei width, GLsizei height, '
        'GLintTextureBorder border, '
        'GLenumTextureFormat format, GLenumPixelType type, '
        'const void* pixels, '
        'uint32_t async_upload_token, '
        'void* sync_data',
    'extension': True,
    'chromium': True,
  },
  'AsyncTexSubImage2DCHROMIUM': {
    'type': 'Manual',
    'data_transfer_methods': ['shm'],
    'client_test': False,
    'cmd_args': 'GLenumTextureTarget target, GLint level, '
        'GLint xoffset, GLint yoffset, '
        'GLsizei width, GLsizei height, '
        'GLenumTextureFormat format, GLenumPixelType type, '
        'const void* data, '
        'uint32_t async_upload_token, '
        'void* sync_data',
    'extension': True,
    'chromium': True,
  },
  'WaitAsyncTexImage2DCHROMIUM': {
    'type': 'Manual',
    'client_test': False,
    'extension': True,
    'chromium': True,
  },
  'WaitAllAsyncTexImage2DCHROMIUM': {
    'type': 'Manual',
    'client_test': False,
    'extension': True,
    'chromium': True,
  },
  'DiscardFramebufferEXT': {
    'type': 'PUTn',
    'count': 1,
    'cmd_args': 'GLenum target, GLsizei count, '
        'const GLenum* attachments',
    'decoder_func': 'DoDiscardFramebufferEXT',
    'unit_test': False,
    'client_test': False,
    'extension_flag': 'ext_discard_framebuffer',
  },
  'LoseContextCHROMIUM': {
    'decoder_func': 'DoLoseContextCHROMIUM',
    'unit_test': False,
    'extension': True,
    'chromium': True,
  },
  'InsertSyncPointCHROMIUM': {
    'type': 'HandWritten',
    'impl_func': False,
    'extension': "CHROMIUM_sync_point",
    'chromium': True,
  },
  'WaitSyncPointCHROMIUM': {
    'type': 'Custom',
    'impl_func': True,
    'extension': "CHROMIUM_sync_point",
    'chromium': True,
    'trace_level': 1,
  },
  'DiscardBackbufferCHROMIUM': {
    'type': 'Custom',
    'impl_func': True,
    'extension': True,
    'chromium': True,
  },
  'ScheduleOverlayPlaneCHROMIUM': {
      'type': 'Custom',
      'impl_func': True,
      'unit_test': False,
      'client_test': False,
      'extension': True,
      'chromium': True,
  },
  'MatrixLoadfCHROMIUM': {
    'type': 'PUT',
    'count': 16,
    'data_type': 'GLfloat',
    'decoder_func': 'DoMatrixLoadfCHROMIUM',
    'gl_test_func': 'glMatrixLoadfEXT',
    'chromium': True,
    'extension': True,
    'extension_flag': 'chromium_path_rendering',
  },
  'MatrixLoadIdentityCHROMIUM': {
    'decoder_func': 'DoMatrixLoadIdentityCHROMIUM',
    'gl_test_func': 'glMatrixLoadIdentityEXT',
    'chromium': True,
    'extension': True,
    'extension_flag': 'chromium_path_rendering',
  },
}


def Grouper(n, iterable, fillvalue=None):
  """Collect data into fixed-length chunks or blocks"""
  args = [iter(iterable)] * n
  return itertools.izip_longest(fillvalue=fillvalue, *args)


def SplitWords(input_string):
  """Transforms a input_string into a list of lower-case components.

  Args:
    input_string: the input string.

  Returns:
    a list of lower-case words.
  """
  if input_string.find('_') > -1:
    # 'some_TEXT_' -> 'some text'
    return input_string.replace('_', ' ').strip().lower().split()
  else:
    if re.search('[A-Z]', input_string) and re.search('[a-z]', input_string):
      # mixed case.
      # look for capitalization to cut input_strings
      # 'SomeText' -> 'Some Text'
      input_string = re.sub('([A-Z])', r' \1', input_string).strip()
      # 'Vector3' -> 'Vector 3'
      input_string = re.sub('([^0-9])([0-9])', r'\1 \2', input_string)
    return input_string.lower().split()


def Lower(words):
  """Makes a lower-case identifier from words.

  Args:
    words: a list of lower-case words.

  Returns:
    the lower-case identifier.
  """
  return '_'.join(words)


def ToUnderscore(input_string):
  """converts CamelCase to camel_case."""
  words = SplitWords(input_string)
  return Lower(words)

def CachedStateName(item):
  if item.get('cached', False):
    return 'cached_' + item['name']
  return item['name']

def ToGLExtensionString(extension_flag):
  """Returns GL-type extension string of a extension flag."""
  if extension_flag == "oes_compressed_etc1_rgb8_texture":
    return "OES_compressed_ETC1_RGB8_texture" # Fixup inconsitency with rgb8,
                                              # unfortunate.
  uppercase_words = [ 'img', 'ext', 'arb', 'chromium', 'oes', 'amd', 'bgra8888',
                      'egl', 'atc', 'etc1', 'angle']
  parts = extension_flag.split('_')
  return "_".join(
    [part.upper() if part in uppercase_words else part for part in parts])

def ToCamelCase(input_string):
  """converts ABC_underscore_case to ABCUnderscoreCase."""
  return ''.join(w[0].upper() + w[1:] for w in input_string.split('_'))

def GetGLGetTypeConversion(result_type, value_type, value):
  """Makes a gl compatible type conversion string for accessing state variables.

   Useful when accessing state variables through glGetXXX calls.
   glGet documetation (for example, the manual pages):
   [...] If glGetIntegerv is called, [...] most floating-point values are
   rounded to the nearest integer value. [...]

  Args:
   result_type: the gl type to be obtained
   value_type: the GL type of the state variable
   value: the name of the state variable

  Returns:
   String that converts the state variable to desired GL type according to GL
   rules.
  """

  if result_type == 'GLint':
    if value_type == 'GLfloat':
      return 'static_cast<GLint>(round(%s))' % value
  return 'static_cast<%s>(%s)' % (result_type, value)

class CWriter(object):
  """Writes to a file formatting it for Google's style guidelines."""

  def __init__(self, filename):
    self.filename = filename
    self.content = []

  def Write(self, string):
    """Writes a string to a file spliting if it's > 80 characters."""
    lines = string.splitlines()
    num_lines = len(lines)
    for ii in range(0, num_lines):
      self.content.append(lines[ii])
      if ii < (num_lines - 1) or string[-1] == '\n':
        self.content.append('\n')

  def Close(self):
    """Close the file."""
    content = "".join(self.content)
    write_file = True
    if os.path.exists(self.filename):
      old_file = open(self.filename, "rb");
      old_content = old_file.read()
      old_file.close();
      if content == old_content:
        write_file = False
    if write_file:
      file = open(self.filename, "wb")
      file.write(content)
      file.close()


class CHeaderWriter(CWriter):
  """Writes a C Header file."""

  _non_alnum_re = re.compile(r'[^a-zA-Z0-9]')

  def __init__(self, filename, file_comment = None):
    CWriter.__init__(self, filename)

    base = os.path.abspath(filename)
    while os.path.basename(base) != 'src':
      new_base = os.path.dirname(base)
      assert new_base != base  # Prevent infinite loop.
      base = new_base

    hpath = os.path.relpath(filename, base)
    self.guard = self._non_alnum_re.sub('_', hpath).upper() + '_'

    self.Write(_LICENSE)
    self.Write(_DO_NOT_EDIT_WARNING)
    if not file_comment == None:
      self.Write(file_comment)
    self.Write("#ifndef %s\n" % self.guard)
    self.Write("#define %s\n\n" % self.guard)

  def Close(self):
    self.Write("#endif  // %s\n\n" % self.guard)
    CWriter.Close(self)

class TypeHandler(object):
  """This class emits code for a particular type of function."""

  _remove_expected_call_re = re.compile(r'  EXPECT_CALL.*?;\n', re.S)

  def __init__(self):
    pass

  def InitFunction(self, func):
    """Add or adjust anything type specific for this function."""
    if func.GetInfo('needs_size') and not func.name.endswith('Bucket'):
      func.AddCmdArg(DataSizeArgument('data_size'))

  def NeedsDataTransferFunction(self, func):
    """Overriden from TypeHandler."""
    return func.num_pointer_args >= 1

  def WriteStruct(self, func, file):
    """Writes a structure that matches the arguments to a function."""
    comment = func.GetInfo('cmd_comment')
    if not comment == None:
      file.Write(comment)
    file.Write("struct %s {\n" % func.name)
    file.Write("  typedef %s ValueType;\n" % func.name)
    file.Write("  static const CommandId kCmdId = k%s;\n" % func.name)
    func.WriteCmdArgFlag(file)
    func.WriteCmdFlag(file)
    file.Write("\n")
    result = func.GetInfo('result')
    if not result == None:
      if len(result) == 1:
        file.Write("  typedef %s Result;\n\n" % result[0])
      else:
        file.Write("  struct Result {\n")
        for line in result:
          file.Write("    %s;\n" % line)
        file.Write("  };\n\n")

    func.WriteCmdComputeSize(file)
    func.WriteCmdSetHeader(file)
    func.WriteCmdInit(file)
    func.WriteCmdSet(file)

    file.Write("  gpu::CommandHeader header;\n")
    args = func.GetCmdArgs()
    for arg in args:
      file.Write("  %s %s;\n" % (arg.cmd_type, arg.name))

    consts = func.GetCmdConstants()
    for const in consts:
      file.Write("  static const %s %s = %s;\n" %
                 (const.cmd_type, const.name, const.GetConstantValue()))

    file.Write("};\n")
    file.Write("\n")

    size = len(args) * _SIZE_OF_UINT32 + _SIZE_OF_COMMAND_HEADER
    file.Write("COMPILE_ASSERT(sizeof(%s) == %d,\n" % (func.name, size))
    file.Write("               Sizeof_%s_is_not_%d);\n" % (func.name, size))
    file.Write("COMPILE_ASSERT(offsetof(%s, header) == 0,\n" % func.name)
    file.Write("               OffsetOf_%s_header_not_0);\n" % func.name)
    offset = _SIZE_OF_COMMAND_HEADER
    for arg in args:
      file.Write("COMPILE_ASSERT(offsetof(%s, %s) == %d,\n" %
                 (func.name, arg.name, offset))
      file.Write("               OffsetOf_%s_%s_not_%d);\n" %
                 (func.name, arg.name, offset))
      offset += _SIZE_OF_UINT32
    if not result == None and len(result) > 1:
      offset = 0;
      for line in result:
        parts = line.split()
        name = parts[-1]
        check = """
COMPILE_ASSERT(offsetof(%(cmd_name)s::Result, %(field_name)s) == %(offset)d,
               OffsetOf_%(cmd_name)s_Result_%(field_name)s_not_%(offset)d);
"""
        file.Write((check.strip() + "\n") % {
              'cmd_name': func.name,
              'field_name': name,
              'offset': offset,
            })
        offset += _SIZE_OF_UINT32
    file.Write("\n")

  def WriteHandlerImplementation(self, func, file):
    """Writes the handler implementation for this command."""
    file.Write("  %s(%s);\n" %
               (func.GetGLFunctionName(), func.MakeOriginalArgString("")))

  def WriteCmdSizeTest(self, func, file):
    """Writes the size test for a command."""
    file.Write("  EXPECT_EQ(sizeof(cmd), cmd.header.size * 4u);\n")

  def WriteFormatTest(self, func, file):
    """Writes a format test for a command."""
    file.Write("TEST_F(GLES2FormatTest, %s) {\n" % func.name)
    file.Write("  cmds::%s& cmd = *GetBufferAs<cmds::%s>();\n" %
               (func.name, func.name))
    file.Write("  void* next_cmd = cmd.Set(\n")
    file.Write("      &cmd")
    args = func.GetCmdArgs()
    for value, arg in enumerate(args):
      file.Write(",\n      static_cast<%s>(%d)" % (arg.type, value + 11))
    file.Write(");\n")
    file.Write("  EXPECT_EQ(static_cast<uint32_t>(cmds::%s::kCmdId),\n" %
               func.name)
    file.Write("            cmd.header.command);\n")
    func.type_handler.WriteCmdSizeTest(func, file)
    for value, arg in enumerate(args):
      file.Write("  EXPECT_EQ(static_cast<%s>(%d), cmd.%s);\n" %
                 (arg.type, value + 11, arg.name))
    file.Write("  CheckBytesWrittenMatchesExpectedSize(\n")
    file.Write("      next_cmd, sizeof(cmd));\n")
    file.Write("}\n")
    file.Write("\n")

  def WriteImmediateFormatTest(self, func, file):
    """Writes a format test for an immediate version of a command."""
    pass

  def WriteBucketFormatTest(self, func, file):
    """Writes a format test for a bucket version of a command."""
    pass

  def WriteGetDataSizeCode(self, func, file):
    """Writes the code to set data_size used in validation"""
    pass

  def WriteImmediateCmdSizeTest(self, func, file):
    """Writes a size test for an immediate version of a command."""
    file.Write("  // TODO(gman): Compute correct size.\n")
    file.Write("  EXPECT_EQ(sizeof(cmd), cmd.header.size * 4u);\n")

  def WriteImmediateHandlerImplementation (self, func, file):
    """Writes the handler impl for the immediate version of a command."""
    file.Write("  %s(%s);\n" %
               (func.GetGLFunctionName(), func.MakeOriginalArgString("")))

  def WriteBucketHandlerImplementation (self, func, file):
    """Writes the handler impl for the bucket version of a command."""
    file.Write("  %s(%s);\n" %
               (func.GetGLFunctionName(), func.MakeOriginalArgString("")))

  def WriteServiceHandlerFunctionHeader(self, func, file):
    """Writes function header for service implementation handlers."""
    file.Write("""error::Error GLES2DecoderImpl::Handle%(name)s(
        uint32_t immediate_data_size, const void* cmd_data) {
      const gles2::cmds::%(name)s& c =
          *static_cast<const gles2::cmds::%(name)s*>(cmd_data);
      (void)c;
      """ % {'name': func.name})

  def WriteServiceImplementation(self, func, file):
    """Writes the service implementation for a command."""
    self.WriteServiceHandlerFunctionHeader(func, file)
    self.WriteHandlerExtensionCheck(func, file)
    self.WriteHandlerDeferReadWrite(func, file);
    if len(func.GetOriginalArgs()) > 0:
      last_arg = func.GetLastOriginalArg()
      all_but_last_arg = func.GetOriginalArgs()[:-1]
      for arg in all_but_last_arg:
        arg.WriteGetCode(file)
      self.WriteGetDataSizeCode(func, file)
      last_arg.WriteGetCode(file)
    func.WriteHandlerValidation(file)
    func.WriteHandlerImplementation(file)
    file.Write("  return error::kNoError;\n")
    file.Write("}\n")
    file.Write("\n")

  def WriteImmediateServiceImplementation(self, func, file):
    """Writes the service implementation for an immediate version of command."""
    self.WriteServiceHandlerFunctionHeader(func, file)
    self.WriteHandlerExtensionCheck(func, file)
    self.WriteHandlerDeferReadWrite(func, file);
    last_arg = func.GetLastOriginalArg()
    all_but_last_arg = func.GetOriginalArgs()[:-1]
    for arg in all_but_last_arg:
      arg.WriteGetCode(file)
    self.WriteGetDataSizeCode(func, file)
    last_arg.WriteGetCode(file)
    func.WriteHandlerValidation(file)
    func.WriteHandlerImplementation(file)
    file.Write("  return error::kNoError;\n")
    file.Write("}\n")
    file.Write("\n")

  def WriteBucketServiceImplementation(self, func, file):
    """Writes the service implementation for a bucket version of command."""
    self.WriteServiceHandlerFunctionHeader(func, file)
    self.WriteHandlerExtensionCheck(func, file)
    self.WriteHandlerDeferReadWrite(func, file);
    last_arg = func.GetLastOriginalArg()
    all_but_last_arg = func.GetOriginalArgs()[:-1]
    for arg in all_but_last_arg:
      arg.WriteGetCode(file)
    self.WriteGetDataSizeCode(func, file)
    last_arg.WriteGetCode(file)
    func.WriteHandlerValidation(file)
    func.WriteHandlerImplementation(file)
    file.Write("  return error::kNoError;\n")
    file.Write("}\n")
    file.Write("\n")

  def WriteHandlerExtensionCheck(self, func, file):
    if func.GetInfo('extension_flag'):
      file.Write("  if (!features().%s) {\n" % func.GetInfo('extension_flag'))
      file.Write("    LOCAL_SET_GL_ERROR(GL_INVALID_OPERATION, \"gl%s\","
                 " \"function not available\");\n" % func.original_name)
      file.Write("    return error::kNoError;")
      file.Write("  }\n\n")

  def WriteHandlerDeferReadWrite(self, func, file):
    """Writes the code to handle deferring reads or writes."""
    defer_draws = func.GetInfo('defer_draws')
    defer_reads = func.GetInfo('defer_reads')
    if defer_draws or defer_reads:
      file.Write("  error::Error error;\n")
    if defer_draws:
      file.Write("  error = WillAccessBoundFramebufferForDraw();\n")
      file.Write("  if (error != error::kNoError)\n")
      file.Write("    return error;\n")
    if defer_reads:
      file.Write("  error = WillAccessBoundFramebufferForRead();\n")
      file.Write("  if (error != error::kNoError)\n")
      file.Write("    return error;\n")

  def WriteValidUnitTest(self, func, file, test, *extras):
    """Writes a valid unit test for the service implementation."""
    if func.GetInfo('expectation') == False:
      test = self._remove_expected_call_re.sub('', test)
    name = func.name
    arg_strings = [
      arg.GetValidArg(func) \
      for arg in func.GetOriginalArgs() if not arg.IsConstant()
    ]
    gl_arg_strings = [
      arg.GetValidGLArg(func) \
      for arg in func.GetOriginalArgs()
    ]
    gl_func_name = func.GetGLTestFunctionName()
    vars = {
      'name':name,
      'gl_func_name': gl_func_name,
      'args': ", ".join(arg_strings),
      'gl_args': ", ".join(gl_arg_strings),
    }
    for extra in extras:
      vars.update(extra)
    old_test = ""
    while (old_test != test):
      old_test = test
      test = test % vars
    file.Write(test % vars)

  def WriteInvalidUnitTest(self, func, file, test, *extras):
    """Writes an invalid unit test for the service implementation."""
    for invalid_arg_index, invalid_arg in enumerate(func.GetOriginalArgs()):
      # Service implementation does not test constants, as they are not part of
      # the call in the service side.
      if invalid_arg.IsConstant():
        continue

      num_invalid_values = invalid_arg.GetNumInvalidValues(func)
      for value_index in range(0, num_invalid_values):
        arg_strings = []
        parse_result = "kNoError"
        gl_error = None
        for arg in func.GetOriginalArgs():
          if arg.IsConstant():
            continue
          if invalid_arg is arg:
            (arg_string, parse_result, gl_error) = arg.GetInvalidArg(
                value_index)
          else:
            arg_string = arg.GetValidArg(func)
          arg_strings.append(arg_string)
        gl_arg_strings = []
        for arg in func.GetOriginalArgs():
          gl_arg_strings.append("_")
        gl_func_name = func.GetGLTestFunctionName()
        gl_error_test = ''
        if not gl_error == None:
          gl_error_test = '\n  EXPECT_EQ(%s, GetGLError());' % gl_error

        vars = {
          'name': func.name,
          'arg_index': invalid_arg_index,
          'value_index': value_index,
          'gl_func_name': gl_func_name,
          'args': ", ".join(arg_strings),
          'all_but_last_args': ", ".join(arg_strings[:-1]),
          'gl_args': ", ".join(gl_arg_strings),
          'parse_result': parse_result,
            'gl_error_test': gl_error_test,
        }
        for extra in extras:
          vars.update(extra)
        file.Write(test % vars)

  def WriteServiceUnitTest(self, func, file, *extras):
    """Writes the service unit test for a command."""

    if func.name == 'Enable':
      valid_test = """
TEST_P(%(test_name)s, %(name)sValidArgs) {
  SetupExpectationsForEnableDisable(%(gl_args)s, true);
  SpecializedSetup<cmds::%(name)s, 0>(true);
  cmds::%(name)s cmd;
  cmd.Init(%(args)s);
  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
  EXPECT_EQ(GL_NO_ERROR, GetGLError());
}
"""
    elif func.name == 'Disable':
      valid_test = """
TEST_P(%(test_name)s, %(name)sValidArgs) {
  SetupExpectationsForEnableDisable(%(gl_args)s, false);
  SpecializedSetup<cmds::%(name)s, 0>(true);
  cmds::%(name)s cmd;
  cmd.Init(%(args)s);
  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
  EXPECT_EQ(GL_NO_ERROR, GetGLError());
}
"""
    else:
      valid_test = """
TEST_P(%(test_name)s, %(name)sValidArgs) {
  EXPECT_CALL(*gl_, %(gl_func_name)s(%(gl_args)s));
  SpecializedSetup<cmds::%(name)s, 0>(true);
  cmds::%(name)s cmd;
  cmd.Init(%(args)s);
  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
  EXPECT_EQ(GL_NO_ERROR, GetGLError());
}
"""
    self.WriteValidUnitTest(func, file, valid_test, *extras)

    invalid_test = """
TEST_P(%(test_name)s, %(name)sInvalidArgs%(arg_index)d_%(value_index)d) {
  EXPECT_CALL(*gl_, %(gl_func_name)s(%(gl_args)s)).Times(0);
  SpecializedSetup<cmds::%(name)s, 0>(false);
  cmds::%(name)s cmd;
  cmd.Init(%(args)s);
  EXPECT_EQ(error::%(parse_result)s, ExecuteCmd(cmd));%(gl_error_test)s
}
"""
    self.WriteInvalidUnitTest(func, file, invalid_test, *extras)

  def WriteImmediateServiceUnitTest(self, func, file, *extras):
    """Writes the service unit test for an immediate command."""
    file.Write("// TODO(gman): %s\n" % func.name)

  def WriteImmediateValidationCode(self, func, file):
    """Writes the validation code for an immediate version of a command."""
    pass

  def WriteBucketServiceUnitTest(self, func, file, *extras):
    """Writes the service unit test for a bucket command."""
    file.Write("// TODO(gman): %s\n" % func.name)

  def WriteBucketValidationCode(self, func, file):
    """Writes the validation code for a bucket version of a command."""
    file.Write("// TODO(gman): %s\n" % func.name)

  def WriteGLES2ImplementationDeclaration(self, func, file):
    """Writes the GLES2 Implemention declaration."""
    impl_decl = func.GetInfo('impl_decl')
    if impl_decl == None or impl_decl == True:
      file.Write("%s %s(%s) override;\n" %
                 (func.return_type, func.original_name,
                  func.MakeTypedOriginalArgString("")))
      file.Write("\n")

  def WriteGLES2CLibImplementation(self, func, file):
    file.Write("%s GLES2%s(%s) {\n" %
               (func.return_type, func.name,
                func.MakeTypedOriginalArgString("")))
    result_string = "return "
    if func.return_type == "void":
      result_string = ""
    file.Write("  %sgles2::GetGLContext()->%s(%s);\n" %
               (result_string, func.original_name,
                func.MakeOriginalArgString("")))
    file.Write("}\n")

  def WriteGLES2Header(self, func, file):
    """Writes a re-write macro for GLES"""
    file.Write("#define gl%s GLES2_GET_FUN(%s)\n" %(func.name, func.name))

  def WriteClientGLCallLog(self, func, file):
    """Writes a logging macro for the client side code."""
    comma = ""
    if len(func.GetOriginalArgs()):
      comma = " << "
    file.Write(
        '  GPU_CLIENT_LOG("[" << GetLogPrefix() << "] gl%s("%s%s << ")");\n' %
        (func.original_name, comma, func.MakeLogArgString()))

  def WriteClientGLReturnLog(self, func, file):
    """Writes the return value logging code."""
    if func.return_type != "void":
      file.Write('  GPU_CLIENT_LOG("return:" << result)\n')

  def WriteGLES2ImplementationHeader(self, func, file):
    """Writes the GLES2 Implemention."""
    self.WriteGLES2ImplementationDeclaration(func, file)

  def WriteGLES2TraceImplementationHeader(self, func, file):
    """Writes the GLES2 Trace Implemention header."""
    file.Write("%s %s(%s) override;\n" %
               (func.return_type, func.original_name,
                func.MakeTypedOriginalArgString("")))

  def WriteGLES2TraceImplementation(self, func, file):
    """Writes the GLES2 Trace Implemention."""
    file.Write("%s GLES2TraceImplementation::%s(%s) {\n" %
               (func.return_type, func.original_name,
                func.MakeTypedOriginalArgString("")))
    result_string = "return "
    if func.return_type == "void":
      result_string = ""
    file.Write('  TRACE_EVENT_BINARY_EFFICIENT0("gpu", "GLES2Trace::%s");\n' %
               func.name)
    file.Write("  %sgl_->%s(%s);\n" %
               (result_string, func.name, func.MakeOriginalArgString("")))
    file.Write("}\n")
    file.Write("\n")

  def WriteGLES2Implementation(self, func, file):
    """Writes the GLES2 Implemention."""
    impl_func = func.GetInfo('impl_func')
    impl_decl = func.GetInfo('impl_decl')
    gen_cmd = func.GetInfo('gen_cmd')
    if (func.can_auto_generate and
        (impl_func == None or impl_func == True) and
        (impl_decl == None or impl_decl == True) and
        (gen_cmd == None or gen_cmd == True)):
      file.Write("%s GLES2Implementation::%s(%s) {\n" %
                 (func.return_type, func.original_name,
                  func.MakeTypedOriginalArgString("")))
      file.Write("  GPU_CLIENT_SINGLE_THREAD_CHECK();\n")
      self.WriteClientGLCallLog(func, file)
      func.WriteDestinationInitalizationValidation(file)
      for arg in func.GetOriginalArgs():
        arg.WriteClientSideValidationCode(file, func)
      file.Write("  helper_->%s(%s);\n" %
                 (func.name, func.MakeHelperArgString("")))
      file.Write("  CheckGLError();\n")
      self.WriteClientGLReturnLog(func, file)
      file.Write("}\n")
      file.Write("\n")

  def WriteGLES2InterfaceHeader(self, func, file):
    """Writes the GLES2 Interface."""
    file.Write("virtual %s %s(%s) = 0;\n" %
               (func.return_type, func.original_name,
                func.MakeTypedOriginalArgString("")))

  def WriteGLES2InterfaceStub(self, func, file):
    """Writes the GLES2 Interface stub declaration."""
    file.Write("%s %s(%s) override;\n" %
               (func.return_type, func.original_name,
                func.MakeTypedOriginalArgString("")))

  def WriteGLES2InterfaceStubImpl(self, func, file):
    """Writes the GLES2 Interface stub declaration."""
    args = func.GetOriginalArgs()
    arg_string = ", ".join(
        ["%s /* %s */" % (arg.type, arg.name) for arg in args])
    file.Write("%s GLES2InterfaceStub::%s(%s) {\n" %
               (func.return_type, func.original_name, arg_string))
    if func.return_type != "void":
      file.Write("  return 0;\n")
    file.Write("}\n")

  def WriteGLES2ImplementationUnitTest(self, func, file):
    """Writes the GLES2 Implemention unit test."""
    client_test = func.GetInfo('client_test')
    if (func.can_auto_generate and
        (client_test == None or client_test == True)):
      code = """
TEST_F(GLES2ImplementationTest, %(name)s) {
  struct Cmds {
    cmds::%(name)s cmd;
  };
  Cmds expected;
  expected.cmd.Init(%(cmd_args)s);

  gl_->%(name)s(%(args)s);
  EXPECT_EQ(0, memcmp(&expected, commands_, sizeof(expected)));
}
"""
      cmd_arg_strings = [
        arg.GetValidClientSideCmdArg(func) for arg in func.GetCmdArgs()
      ]

      gl_arg_strings = [
        arg.GetValidClientSideArg(func) for arg in func.GetOriginalArgs()
      ]

      file.Write(code % {
            'name': func.name,
            'args': ", ".join(gl_arg_strings),
            'cmd_args': ", ".join(cmd_arg_strings),
          })

      # Test constants for invalid values, as they are not tested by the
      # service.
      constants = [arg for arg in func.GetOriginalArgs() if arg.IsConstant()]
      if constants:
        code = """
TEST_F(GLES2ImplementationTest, %(name)sInvalidConstantArg%(invalid_index)d) {
  gl_->%(name)s(%(args)s);
  EXPECT_TRUE(NoCommandsWritten());
  EXPECT_EQ(%(gl_error)s, CheckError());
}
"""
        for invalid_arg in constants:
          gl_arg_strings = []
          invalid = invalid_arg.GetInvalidArg(func)
          for arg in func.GetOriginalArgs():
            if arg is invalid_arg:
              gl_arg_strings.append(invalid[0])
            else:
              gl_arg_strings.append(arg.GetValidClientSideArg(func))

          file.Write(code % {
            'name': func.name,
            'invalid_index': func.GetOriginalArgs().index(invalid_arg),
            'args': ", ".join(gl_arg_strings),
            'gl_error': invalid[2],
          })
    else:
      if client_test != False:
        file.Write("// TODO: Implement unit test for %s\n" % func.name)

  def WriteDestinationInitalizationValidation(self, func, file):
    """Writes the client side destintion initialization validation."""
    for arg in func.GetOriginalArgs():
      arg.WriteDestinationInitalizationValidation(file, func)

  def WriteTraceEvent(self, func, file):
    file.Write('  TRACE_EVENT0("gpu", "GLES2Implementation::%s");\n' %
               func.original_name)

  def WriteImmediateCmdComputeSize(self, func, file):
    """Writes the size computation code for the immediate version of a cmd."""
    file.Write("  static uint32_t ComputeSize(uint32_t size_in_bytes) {\n")
    file.Write("    return static_cast<uint32_t>(\n")
    file.Write("        sizeof(ValueType) +  // NOLINT\n")
    file.Write("        RoundSizeToMultipleOfEntries(size_in_bytes));\n")
    file.Write("  }\n")
    file.Write("\n")

  def WriteImmediateCmdSetHeader(self, func, file):
    """Writes the SetHeader function for the immediate version of a cmd."""
    file.Write("  void SetHeader(uint32_t size_in_bytes) {\n")
    file.Write("    header.SetCmdByTotalSize<ValueType>(size_in_bytes);\n")
    file.Write("  }\n")
    file.Write("\n")

  def WriteImmediateCmdInit(self, func, file):
    """Writes the Init function for the immediate version of a command."""
    raise NotImplementedError(func.name)

  def WriteImmediateCmdSet(self, func, file):
    """Writes the Set function for the immediate version of a command."""
    raise NotImplementedError(func.name)

  def WriteCmdHelper(self, func, file):
    """Writes the cmd helper definition for a cmd."""
    code = """  void %(name)s(%(typed_args)s) {
    gles2::cmds::%(name)s* c = GetCmdSpace<gles2::cmds::%(name)s>();
    if (c) {
      c->Init(%(args)s);
    }
  }

"""
    file.Write(code % {
          "name": func.name,
          "typed_args": func.MakeTypedCmdArgString(""),
          "args": func.MakeCmdArgString(""),
        })

  def WriteImmediateCmdHelper(self, func, file):
    """Writes the cmd helper definition for the immediate version of a cmd."""
    code = """  void %(name)s(%(typed_args)s) {
    const uint32_t s = 0;  // TODO(gman): compute correct size
    gles2::cmds::%(name)s* c =
        GetImmediateCmdSpaceTotalSize<gles2::cmds::%(name)s>(s);
    if (c) {
      c->Init(%(args)s);
    }
  }

"""
    file.Write(code % {
           "name": func.name,
           "typed_args": func.MakeTypedCmdArgString(""),
           "args": func.MakeCmdArgString(""),
        })


class StateSetHandler(TypeHandler):
  """Handler for commands that simply set state."""

  def __init__(self):
    TypeHandler.__init__(self)

  def WriteHandlerImplementation(self, func, file):
    """Overrriden from TypeHandler."""
    state_name = func.GetInfo('state')
    state = _STATES[state_name]
    states = state['states']
    args = func.GetOriginalArgs()
    for ndx,item in enumerate(states):
      code = []
      if 'range_checks' in item:
        for range_check in item['range_checks']:
          code.append("%s %s" % (args[ndx].name, range_check['check']))
      if 'nan_check' in item:
        # Drivers might generate an INVALID_VALUE error when a value is set
        # to NaN. This is allowed behavior under GLES 3.0 section 2.1.1 or
        # OpenGL 4.5 section 2.3.4.1 - providing NaN allows undefined results.
        # Make this behavior consistent within Chromium, and avoid leaking GL
        # errors by generating the error in the command buffer instead of
        # letting the GL driver generate it.
        code.append("base::IsNaN(%s)" % args[ndx].name)
      if len(code):
        file.Write("  if (%s) {\n" % " ||\n      ".join(code))
        file.Write(
          '    LOCAL_SET_GL_ERROR(GL_INVALID_VALUE,'
          ' "%s", "%s out of range");\n' %
          (func.name, args[ndx].name))
        file.Write("    return error::kNoError;\n")
        file.Write("  }\n")
    code = []
    for ndx,item in enumerate(states):
      code.append("state_.%s != %s" % (item['name'], args[ndx].name))
    file.Write("  if (%s) {\n" % " ||\n      ".join(code))
    for ndx,item in enumerate(states):
      file.Write("    state_.%s = %s;\n" % (item['name'], args[ndx].name))
    if 'state_flag' in state:
      file.Write("    %s = true;\n" % state['state_flag'])
    if not func.GetInfo("no_gl"):
      for ndx,item in enumerate(states):
        if item.get('cached', False):
          file.Write("    state_.%s = %s;\n" %
                     (CachedStateName(item), args[ndx].name))
      file.Write("    %s(%s);\n" %
                 (func.GetGLFunctionName(), func.MakeOriginalArgString("")))
    file.Write("  }\n")

  def WriteServiceUnitTest(self, func, file, *extras):
    """Overrriden from TypeHandler."""
    TypeHandler.WriteServiceUnitTest(self, func, file, *extras)
    state_name = func.GetInfo('state')
    state = _STATES[state_name]
    states = state['states']
    for ndx,item in enumerate(states):
      if 'range_checks' in item:
        for check_ndx, range_check in enumerate(item['range_checks']):
          valid_test = """
TEST_P(%(test_name)s, %(name)sInvalidValue%(ndx)d_%(check_ndx)d) {
  SpecializedSetup<cmds::%(name)s, 0>(false);
  cmds::%(name)s cmd;
  cmd.Init(%(args)s);
  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
  EXPECT_EQ(GL_INVALID_VALUE, GetGLError());
}
"""
          name = func.name
          arg_strings = [
            arg.GetValidArg(func) \
            for arg in func.GetOriginalArgs() if not arg.IsConstant()
          ]

          arg_strings[ndx] = range_check['test_value']
          vars = {
            'name': name,
            'ndx': ndx,
            'check_ndx': check_ndx,
            'args': ", ".join(arg_strings),
          }
          for extra in extras:
            vars.update(extra)
          file.Write(valid_test % vars)
      if 'nan_check' in item:
        valid_test = """
TEST_P(%(test_name)s, %(name)sNaNValue%(ndx)d) {
  SpecializedSetup<cmds::%(name)s, 0>(false);
  cmds::%(name)s cmd;
  cmd.Init(%(args)s);
  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
  EXPECT_EQ(GL_INVALID_VALUE, GetGLError());
}
"""
        name = func.name
        arg_strings = [
          arg.GetValidArg(func) \
          for arg in func.GetOriginalArgs() if not arg.IsConstant()
        ]

        arg_strings[ndx] = 'nanf("")'
        vars = {
          'name': name,
          'ndx': ndx,
          'args': ", ".join(arg_strings),
        }
        for extra in extras:
          vars.update(extra)
        file.Write(valid_test % vars)


class StateSetRGBAlphaHandler(TypeHandler):
  """Handler for commands that simply set state that have rgb/alpha."""

  def __init__(self):
    TypeHandler.__init__(self)

  def WriteHandlerImplementation(self, func, file):
    """Overrriden from TypeHandler."""
    state_name = func.GetInfo('state')
    state = _STATES[state_name]
    states = state['states']
    args = func.GetOriginalArgs()
    num_args = len(args)
    code = []
    for ndx,item in enumerate(states):
      code.append("state_.%s != %s" % (item['name'], args[ndx % num_args].name))
    file.Write("  if (%s) {\n" % " ||\n      ".join(code))
    for ndx, item in enumerate(states):
      file.Write("    state_.%s = %s;\n" %
                 (item['name'], args[ndx % num_args].name))
    if 'state_flag' in state:
      file.Write("    %s = true;\n" % state['state_flag'])
    if not func.GetInfo("no_gl"):
      file.Write("    %s(%s);\n" %
                 (func.GetGLFunctionName(), func.MakeOriginalArgString("")))
      file.Write("  }\n")


class StateSetFrontBackSeparateHandler(TypeHandler):
  """Handler for commands that simply set state that have front/back."""

  def __init__(self):
    TypeHandler.__init__(self)

  def WriteHandlerImplementation(self, func, file):
    """Overrriden from TypeHandler."""
    state_name = func.GetInfo('state')
    state = _STATES[state_name]
    states = state['states']
    args = func.GetOriginalArgs()
    face = args[0].name
    num_args = len(args)
    file.Write("  bool changed = false;\n")
    for group_ndx, group in enumerate(Grouper(num_args - 1, states)):
      file.Write("  if (%s == %s || %s == GL_FRONT_AND_BACK) {\n" %
                 (face, ('GL_FRONT', 'GL_BACK')[group_ndx], face))
      code = []
      for ndx, item in enumerate(group):
        code.append("state_.%s != %s" % (item['name'], args[ndx + 1].name))
      file.Write("    changed |= %s;\n" % " ||\n        ".join(code))
      file.Write("  }\n")
    file.Write("  if (changed) {\n")
    for group_ndx, group in enumerate(Grouper(num_args - 1, states)):
      file.Write("    if (%s == %s || %s == GL_FRONT_AND_BACK) {\n" %
                 (face, ('GL_FRONT', 'GL_BACK')[group_ndx], face))
      for ndx, item in enumerate(group):
        file.Write("      state_.%s = %s;\n" %
                   (item['name'], args[ndx + 1].name))
      file.Write("    }\n")
    if 'state_flag' in state:
      file.Write("    %s = true;\n" % state['state_flag'])
    if not func.GetInfo("no_gl"):
      file.Write("    %s(%s);\n" %
                 (func.GetGLFunctionName(), func.MakeOriginalArgString("")))
    file.Write("  }\n")


class StateSetFrontBackHandler(TypeHandler):
  """Handler for commands that simply set state that set both front/back."""

  def __init__(self):
    TypeHandler.__init__(self)

  def WriteHandlerImplementation(self, func, file):
    """Overrriden from TypeHandler."""
    state_name = func.GetInfo('state')
    state = _STATES[state_name]
    states = state['states']
    args = func.GetOriginalArgs()
    num_args = len(args)
    code = []
    for group_ndx, group in enumerate(Grouper(num_args, states)):
      for ndx, item in enumerate(group):
        code.append("state_.%s != %s" % (item['name'], args[ndx].name))
    file.Write("  if (%s) {\n" % " ||\n      ".join(code))
    for group_ndx, group in enumerate(Grouper(num_args, states)):
      for ndx, item in enumerate(group):
        file.Write("    state_.%s = %s;\n" % (item['name'], args[ndx].name))
    if 'state_flag' in state:
      file.Write("    %s = true;\n" % state['state_flag'])
    if not func.GetInfo("no_gl"):
      file.Write("    %s(%s);\n" %
                 (func.GetGLFunctionName(), func.MakeOriginalArgString("")))
    file.Write("  }\n")


class StateSetNamedParameter(TypeHandler):
  """Handler for commands that set a state chosen with an enum parameter."""

  def __init__(self):
    TypeHandler.__init__(self)

  def WriteHandlerImplementation(self, func, file):
    """Overridden from TypeHandler."""
    state_name = func.GetInfo('state')
    state = _STATES[state_name]
    states = state['states']
    args = func.GetOriginalArgs()
    num_args = len(args)
    assert num_args == 2
    file.Write("  switch (%s) {\n" % args[0].name)
    for state in states:
      file.Write("    case %s:\n" % state['enum'])
      file.Write("      if (state_.%s != %s) {\n" %
                 (state['name'], args[1].name))
      file.Write("        state_.%s = %s;\n" % (state['name'], args[1].name))
      if not func.GetInfo("no_gl"):
        file.Write("        %s(%s);\n" %
                   (func.GetGLFunctionName(), func.MakeOriginalArgString("")))
      file.Write("      }\n")
      file.Write("      break;\n")
    file.Write("    default:\n")
    file.Write("      NOTREACHED();\n")
    file.Write("  }\n")


class CustomHandler(TypeHandler):
  """Handler for commands that are auto-generated but require minor tweaks."""

  def __init__(self):
    TypeHandler.__init__(self)

  def WriteServiceImplementation(self, func, file):
    """Overrriden from TypeHandler."""
    pass

  def WriteImmediateServiceImplementation(self, func, file):
    """Overrriden from TypeHandler."""
    pass

  def WriteBucketServiceImplementation(self, func, file):
    """Overrriden from TypeHandler."""
    pass

  def WriteServiceUnitTest(self, func, file, *extras):
    """Overrriden from TypeHandler."""
    file.Write("// TODO(gman): %s\n\n" % func.name)

  def WriteImmediateServiceUnitTest(self, func, file, *extras):
    """Overrriden from TypeHandler."""
    file.Write("// TODO(gman): %s\n\n" % func.name)

  def WriteImmediateCmdGetTotalSize(self, func, file):
    """Overrriden from TypeHandler."""
    file.Write(
        "    uint32_t total_size = 0;  // TODO(gman): get correct size.\n")

  def WriteImmediateCmdInit(self, func, file):
    """Overrriden from TypeHandler."""
    file.Write("  void Init(%s) {\n" % func.MakeTypedCmdArgString("_"))
    self.WriteImmediateCmdGetTotalSize(func, file)
    file.Write("    SetHeader(total_size);\n")
    args = func.GetCmdArgs()
    for arg in args:
      file.Write("    %s = _%s;\n" % (arg.name, arg.name))
    file.Write("  }\n")
    file.Write("\n")

  def WriteImmediateCmdSet(self, func, file):
    """Overrriden from TypeHandler."""
    copy_args = func.MakeCmdArgString("_", False)
    file.Write("  void* Set(void* cmd%s) {\n" %
               func.MakeTypedCmdArgString("_", True))
    self.WriteImmediateCmdGetTotalSize(func, file)
    file.Write("    static_cast<ValueType*>(cmd)->Init(%s);\n" % copy_args)
    file.Write("    return NextImmediateCmdAddressTotalSize<ValueType>("
               "cmd, total_size);\n")
    file.Write("  }\n")
    file.Write("\n")


class TodoHandler(CustomHandler):
  """Handle for commands that are not yet implemented."""

  def NeedsDataTransferFunction(self, func):
    """Overriden from TypeHandler."""
    return False

  def WriteImmediateFormatTest(self, func, file):
    """Overrriden from TypeHandler."""
    pass

  def WriteGLES2ImplementationUnitTest(self, func, file):
    """Overrriden from TypeHandler."""
    pass

  def WriteGLES2Implementation(self, func, file):
    """Overrriden from TypeHandler."""
    file.Write("%s GLES2Implementation::%s(%s) {\n" %
               (func.return_type, func.original_name,
                func.MakeTypedOriginalArgString("")))
    file.Write("  // TODO: for now this is a no-op\n")
    file.Write(
        "  SetGLError("
        "GL_INVALID_OPERATION, \"gl%s\", \"not implemented\");\n" %
        func.name)
    if func.return_type != "void":
      file.Write("  return 0;\n")
    file.Write("}\n")
    file.Write("\n")

  def WriteServiceImplementation(self, func, file):
    """Overrriden from TypeHandler."""
    self.WriteServiceHandlerFunctionHeader(func, file)
    file.Write("  // TODO: for now this is a no-op\n")
    file.Write(
        "  LOCAL_SET_GL_ERROR("
        "GL_INVALID_OPERATION, \"gl%s\", \"not implemented\");\n" %
        func.name)
    file.Write("  return error::kNoError;\n")
    file.Write("}\n")
    file.Write("\n")


class HandWrittenHandler(CustomHandler):
  """Handler for comands where everything must be written by hand."""

  def InitFunction(self, func):
    """Add or adjust anything type specific for this function."""
    CustomHandler.InitFunction(self, func)
    func.can_auto_generate = False

  def NeedsDataTransferFunction(self, func):
    """Overriden from TypeHandler."""
    # If specified explicitly, force the data transfer method.
    if func.GetInfo('data_transfer_methods'):
      return True
    return False

  def WriteStruct(self, func, file):
    """Overrriden from TypeHandler."""
    pass

  def WriteDocs(self, func, file):
    """Overrriden from TypeHandler."""
    pass

  def WriteServiceUnitTest(self, func, file, *extras):
    """Overrriden from TypeHandler."""
    file.Write("// TODO(gman): %s\n\n" % func.name)

  def WriteImmediateServiceUnitTest(self, func, file, *extras):
    """Overrriden from TypeHandler."""
    file.Write("// TODO(gman): %s\n\n" % func.name)

  def WriteBucketServiceUnitTest(self, func, file, *extras):
    """Overrriden from TypeHandler."""
    file.Write("// TODO(gman): %s\n\n" % func.name)

  def WriteServiceImplementation(self, func, file):
    """Overrriden from TypeHandler."""
    pass

  def WriteImmediateServiceImplementation(self, func, file):
    """Overrriden from TypeHandler."""
    pass

  def WriteBucketServiceImplementation(self, func, file):
    """Overrriden from TypeHandler."""
    pass

  def WriteImmediateCmdHelper(self, func, file):
    """Overrriden from TypeHandler."""
    pass

  def WriteBucketCmdHelper(self, func, file):
    """Overrriden from TypeHandler."""
    pass

  def WriteCmdHelper(self, func, file):
    """Overrriden from TypeHandler."""
    pass

  def WriteFormatTest(self, func, file):
    """Overrriden from TypeHandler."""
    file.Write("// TODO(gman): Write test for %s\n" % func.name)

  def WriteImmediateFormatTest(self, func, file):
    """Overrriden from TypeHandler."""
    file.Write("// TODO(gman): Write test for %s\n" % func.name)

  def WriteBucketFormatTest(self, func, file):
    """Overrriden from TypeHandler."""
    file.Write("// TODO(gman): Write test for %s\n" % func.name)


class ManualHandler(CustomHandler):
  """Handler for commands who's handlers must be written by hand."""

  def __init__(self):
    CustomHandler.__init__(self)

  def InitFunction(self, func):
    """Overrriden from TypeHandler."""
    if (func.name == 'CompressedTexImage2DBucket'):
      func.cmd_args = func.cmd_args[:-1]
      func.AddCmdArg(Argument('bucket_id', 'GLuint'))
    else:
      CustomHandler.InitFunction(self, func)

  def WriteServiceImplementation(self, func, file):
    """Overrriden from TypeHandler."""
    pass

  def WriteBucketServiceImplementation(self, func, file):
    """Overrriden from TypeHandler."""
    pass

  def WriteServiceUnitTest(self, func, file, *extras):
    """Overrriden from TypeHandler."""
    file.Write("// TODO(gman): %s\n\n" % func.name)

  def WriteImmediateServiceUnitTest(self, func, file, *extras):
    """Overrriden from TypeHandler."""
    file.Write("// TODO(gman): %s\n\n" % func.name)

  def WriteImmediateServiceImplementation(self, func, file):
    """Overrriden from TypeHandler."""
    pass

  def WriteImmediateFormatTest(self, func, file):
    """Overrriden from TypeHandler."""
    file.Write("// TODO(gman): Implement test for %s\n" % func.name)

  def WriteGLES2Implementation(self, func, file):
    """Overrriden from TypeHandler."""
    if func.GetInfo('impl_func'):
      super(ManualHandler, self).WriteGLES2Implementation(func, file)

  def WriteGLES2ImplementationHeader(self, func, file):
    """Overrriden from TypeHandler."""
    file.Write("%s %s(%s) override;\n" %
               (func.return_type, func.original_name,
                func.MakeTypedOriginalArgString("")))
    file.Write("\n")

  def WriteImmediateCmdGetTotalSize(self, func, file):
    """Overrriden from TypeHandler."""
    # TODO(gman): Move this data to _FUNCTION_INFO?
    CustomHandler.WriteImmediateCmdGetTotalSize(self, func, file)


class DataHandler(TypeHandler):
  """Handler for glBufferData, glBufferSubData, glTexImage2D, glTexSubImage2D,
     glCompressedTexImage2D, glCompressedTexImageSub2D."""
  def __init__(self):
    TypeHandler.__init__(self)

  def InitFunction(self, func):
    """Overrriden from TypeHandler."""
    if func.name == 'CompressedTexSubImage2DBucket':
      func.cmd_args = func.cmd_args[:-1]
      func.AddCmdArg(Argument('bucket_id', 'GLuint'))

  def WriteGetDataSizeCode(self, func, file):
    """Overrriden from TypeHandler."""
    # TODO(gman): Move this data to _FUNCTION_INFO?
    name = func.name
    if name.endswith("Immediate"):
      name = name[0:-9]
    if name == 'BufferData' or name == 'BufferSubData':
      file.Write("  uint32_t data_size = size;\n")
    elif (name == 'CompressedTexImage2D' or
          name == 'CompressedTexSubImage2D'):
      file.Write("  uint32_t data_size = imageSize;\n")
    elif (name == 'CompressedTexSubImage2DBucket'):
      file.Write("  Bucket* bucket = GetBucket(c.bucket_id);\n")
      file.Write("  uint32_t data_size = bucket->size();\n")
      file.Write("  GLsizei imageSize = data_size;\n")
    elif name == 'TexImage2D' or name == 'TexSubImage2D':
      code = """  uint32_t data_size;
  if (!GLES2Util::ComputeImageDataSize(
      width, height, format, type, unpack_alignment_, &data_size)) {
    return error::kOutOfBounds;
  }
"""
      file.Write(code)
    else:
      file.Write(
          "// uint32_t data_size = 0;  // TODO(gman): get correct size!\n")

  def WriteImmediateCmdGetTotalSize(self, func, file):
    """Overrriden from TypeHandler."""
    pass

  def WriteImmediateCmdSizeTest(self, func, file):
    """Overrriden from TypeHandler."""
    file.Write("  EXPECT_EQ(sizeof(cmd), total_size);\n")

  def WriteImmediateCmdInit(self, func, file):
    """Overrriden from TypeHandler."""
    file.Write("  void Init(%s) {\n" % func.MakeTypedCmdArgString("_"))
    self.WriteImmediateCmdGetTotalSize(func, file)
    file.Write("    SetHeader(total_size);\n")
    args = func.GetCmdArgs()
    for arg in args:
      file.Write("    %s = _%s;\n" % (arg.name, arg.name))
    file.Write("  }\n")
    file.Write("\n")

  def WriteImmediateCmdSet(self, func, file):
    """Overrriden from TypeHandler."""
    copy_args = func.MakeCmdArgString("_", False)
    file.Write("  void* Set(void* cmd%s) {\n" %
               func.MakeTypedCmdArgString("_", True))
    self.WriteImmediateCmdGetTotalSize(func, file)
    file.Write("    static_cast<ValueType*>(cmd)->Init(%s);\n" % copy_args)
    file.Write("    return NextImmediateCmdAddressTotalSize<ValueType>("
               "cmd, total_size);\n")
    file.Write("  }\n")
    file.Write("\n")

  def WriteImmediateFormatTest(self, func, file):
    """Overrriden from TypeHandler."""
    # TODO(gman): Remove this exception.
    file.Write("// TODO(gman): Implement test for %s\n" % func.name)
    return

  def WriteServiceUnitTest(self, func, file, *extras):
    """Overrriden from TypeHandler."""
    file.Write("// TODO(gman): %s\n\n" % func.name)

  def WriteImmediateServiceUnitTest(self, func, file, *extras):
    """Overrriden from TypeHandler."""
    file.Write("// TODO(gman): %s\n\n" % func.name)

  def WriteBucketServiceImplementation(self, func, file):
    """Overrriden from TypeHandler."""
    if not func.name == 'CompressedTexSubImage2DBucket':
      TypeHandler.WriteBucketServiceImplemenation(self, func, file)


class BindHandler(TypeHandler):
  """Handler for glBind___ type functions."""

  def __init__(self):
    TypeHandler.__init__(self)

  def WriteServiceUnitTest(self, func, file, *extras):
    """Overrriden from TypeHandler."""

    if len(func.GetOriginalArgs()) == 1:
      valid_test = """
TEST_P(%(test_name)s, %(name)sValidArgs) {
  EXPECT_CALL(*gl_, %(gl_func_name)s(%(gl_args)s));
  SpecializedSetup<cmds::%(name)s, 0>(true);
  cmds::%(name)s cmd;
  cmd.Init(%(args)s);
  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
  EXPECT_EQ(GL_NO_ERROR, GetGLError());
}
"""
      if func.GetInfo("gen_func"):
          valid_test += """
TEST_P(%(test_name)s, %(name)sValidArgsNewId) {
  EXPECT_CALL(*gl_, %(gl_func_name)s(kNewServiceId));
  EXPECT_CALL(*gl_, %(gl_gen_func_name)s(1, _))
     .WillOnce(SetArgumentPointee<1>(kNewServiceId));
  SpecializedSetup<cmds::%(name)s, 0>(true);
  cmds::%(name)s cmd;
  cmd.Init(kNewClientId);
  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
  EXPECT_EQ(GL_NO_ERROR, GetGLError());
  EXPECT_TRUE(Get%(resource_type)s(kNewClientId) != NULL);
}
"""
      self.WriteValidUnitTest(func, file, valid_test, {
          'resource_type': func.GetOriginalArgs()[0].resource_type,
          'gl_gen_func_name': func.GetInfo("gen_func"),
      }, *extras)
    else:
      valid_test = """
TEST_P(%(test_name)s, %(name)sValidArgs) {
  EXPECT_CALL(*gl_, %(gl_func_name)s(%(gl_args)s));
  SpecializedSetup<cmds::%(name)s, 0>(true);
  cmds::%(name)s cmd;
  cmd.Init(%(args)s);
  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
  EXPECT_EQ(GL_NO_ERROR, GetGLError());
}
"""
      if func.GetInfo("gen_func"):
          valid_test += """
TEST_P(%(test_name)s, %(name)sValidArgsNewId) {
  EXPECT_CALL(*gl_, %(gl_func_name)s(%(first_gl_arg)s, kNewServiceId));
  EXPECT_CALL(*gl_, %(gl_gen_func_name)s(1, _))
     .WillOnce(SetArgumentPointee<1>(kNewServiceId));
  SpecializedSetup<cmds::%(name)s, 0>(true);
  cmds::%(name)s cmd;
  cmd.Init(%(first_arg)s, kNewClientId);
  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
  EXPECT_EQ(GL_NO_ERROR, GetGLError());
  EXPECT_TRUE(Get%(resource_type)s(kNewClientId) != NULL);
}
"""
      self.WriteValidUnitTest(func, file, valid_test, {
          'first_arg': func.GetOriginalArgs()[0].GetValidArg(func),
          'first_gl_arg': func.GetOriginalArgs()[0].GetValidGLArg(func),
          'resource_type': func.GetOriginalArgs()[1].resource_type,
          'gl_gen_func_name': func.GetInfo("gen_func"),
      }, *extras)

    invalid_test = """
TEST_P(%(test_name)s, %(name)sInvalidArgs%(arg_index)d_%(value_index)d) {
  EXPECT_CALL(*gl_, %(gl_func_name)s(%(gl_args)s)).Times(0);
  SpecializedSetup<cmds::%(name)s, 0>(false);
  cmds::%(name)s cmd;
  cmd.Init(%(args)s);
  EXPECT_EQ(error::%(parse_result)s, ExecuteCmd(cmd));%(gl_error_test)s
}
"""
    self.WriteInvalidUnitTest(func, file, invalid_test, *extras)

  def WriteGLES2Implementation(self, func, file):
    """Writes the GLES2 Implemention."""

    impl_func = func.GetInfo('impl_func')
    impl_decl = func.GetInfo('impl_decl')

    if (func.can_auto_generate and
          (impl_func == None or impl_func == True) and
          (impl_decl == None or impl_decl == True)):

      file.Write("%s GLES2Implementation::%s(%s) {\n" %
                 (func.return_type, func.original_name,
                  func.MakeTypedOriginalArgString("")))
      file.Write("  GPU_CLIENT_SINGLE_THREAD_CHECK();\n")
      func.WriteDestinationInitalizationValidation(file)
      self.WriteClientGLCallLog(func, file)
      for arg in func.GetOriginalArgs():
        arg.WriteClientSideValidationCode(file, func)

      code = """  if (Is%(type)sReservedId(%(id)s)) {
    SetGLError(GL_INVALID_OPERATION, "%(name)s\", \"%(id)s reserved id");
    return;
  }
  if (%(name)sHelper(%(arg_string)s)) {
    helper_->%(name)s(%(arg_string)s);
  }
  CheckGLError();
}

"""
      name_arg = None
      if len(func.GetOriginalArgs()) == 1:
        # Bind functions that have no target (like BindVertexArrayOES)
        name_arg = func.GetOriginalArgs()[0]
      else:
        # Bind functions that have both a target and a name (like BindTexture)
        name_arg = func.GetOriginalArgs()[1]

      file.Write(code % {
          'name': func.name,
          'arg_string': func.MakeOriginalArgString(""),
          'id': name_arg.name,
          'type': name_arg.resource_type,
          'lc_type': name_arg.resource_type.lower(),
        })

  def WriteGLES2ImplementationUnitTest(self, func, file):
    """Overrriden from TypeHandler."""
    client_test = func.GetInfo('client_test')
    if client_test == False:
      return
    code = """
TEST_F(GLES2ImplementationTest, %(name)s) {
  struct Cmds {
    cmds::%(name)s cmd;
  };
  Cmds expected;
  expected.cmd.Init(%(cmd_args)s);

  gl_->%(name)s(%(args)s);
  EXPECT_EQ(0, memcmp(&expected, commands_, sizeof(expected)));
  ClearCommands();
  gl_->%(name)s(%(args)s);
  EXPECT_TRUE(NoCommandsWritten());
}
"""
    cmd_arg_strings = [
      arg.GetValidClientSideCmdArg(func) for arg in func.GetCmdArgs()
    ]
    gl_arg_strings = [
      arg.GetValidClientSideArg(func) for arg in func.GetOriginalArgs()
    ]

    file.Write(code % {
          'name': func.name,
          'args': ", ".join(gl_arg_strings),
          'cmd_args': ", ".join(cmd_arg_strings),
        })


class GENnHandler(TypeHandler):
  """Handler for glGen___ type functions."""

  def __init__(self):
    TypeHandler.__init__(self)

  def InitFunction(self, func):
    """Overrriden from TypeHandler."""
    pass

  def WriteGetDataSizeCode(self, func, file):
    """Overrriden from TypeHandler."""
    code = """  uint32_t data_size;
  if (!SafeMultiplyUint32(n, sizeof(GLuint), &data_size)) {
    return error::kOutOfBounds;
  }
"""
    file.Write(code)

  def WriteHandlerImplementation (self, func, file):
    """Overrriden from TypeHandler."""
    file.Write("  if (!%sHelper(n, %s)) {\n"
               "    return error::kInvalidArguments;\n"
               "  }\n" %
               (func.name, func.GetLastOriginalArg().name))

  def WriteImmediateHandlerImplementation(self, func, file):
    """Overrriden from TypeHandler."""
    file.Write("  if (!%sHelper(n, %s)) {\n"
               "    return error::kInvalidArguments;\n"
               "  }\n" %
               (func.original_name, func.GetLastOriginalArg().name))

  def WriteGLES2Implementation(self, func, file):
    """Overrriden from TypeHandler."""
    log_code = ("""  GPU_CLIENT_LOG_CODE_BLOCK({
    for (GLsizei i = 0; i < n; ++i) {
      GPU_CLIENT_LOG("  " << i << ": " << %s[i]);
    }
  });""" % func.GetOriginalArgs()[1].name)
    args = {
        'log_code': log_code,
        'return_type': func.return_type,
        'name': func.original_name,
        'typed_args': func.MakeTypedOriginalArgString(""),
        'args': func.MakeOriginalArgString(""),
        'resource_types': func.GetInfo('resource_types'),
        'count_name': func.GetOriginalArgs()[0].name,
      }
    file.Write(
        "%(return_type)s GLES2Implementation::%(name)s(%(typed_args)s) {\n" %
        args)
    func.WriteDestinationInitalizationValidation(file)
    self.WriteClientGLCallLog(func, file)
    for arg in func.GetOriginalArgs():
      arg.WriteClientSideValidationCode(file, func)
    not_shared = func.GetInfo('not_shared')
    if not_shared:
      alloc_code = (

"""  IdAllocator* id_allocator = GetIdAllocator(id_namespaces::k%s);
  for (GLsizei ii = 0; ii < n; ++ii)
    %s[ii] = id_allocator->AllocateID();""" %
  (func.GetInfo('resource_types'), func.GetOriginalArgs()[1].name))
    else:
      alloc_code = ("""  GetIdHandler(id_namespaces::k%(resource_types)s)->
      MakeIds(this, 0, %(args)s);""" % args)
    args['alloc_code'] = alloc_code

    code = """ GPU_CLIENT_SINGLE_THREAD_CHECK();
%(alloc_code)s
  %(name)sHelper(%(args)s);
  helper_->%(name)sImmediate(%(args)s);
  if (share_group_->bind_generates_resource())
    helper_->CommandBufferHelper::Flush();
%(log_code)s
  CheckGLError();
}

"""
    file.Write(code % args)

  def WriteGLES2ImplementationUnitTest(self, func, file):
    """Overrriden from TypeHandler."""
    code = """
TEST_F(GLES2ImplementationTest, %(name)s) {
  GLuint ids[2] = { 0, };
  struct Cmds {
    cmds::%(name)sImmediate gen;
    GLuint data[2];
  };
  Cmds expected;
  expected.gen.Init(arraysize(ids), &ids[0]);
  expected.data[0] = k%(types)sStartId;
  expected.data[1] = k%(types)sStartId + 1;
  gl_->%(name)s(arraysize(ids), &ids[0]);
  EXPECT_EQ(0, memcmp(&expected, commands_, sizeof(expected)));
  EXPECT_EQ(k%(types)sStartId, ids[0]);
  EXPECT_EQ(k%(types)sStartId + 1, ids[1]);
}
"""
    file.Write(code % {
          'name': func.name,
          'types': func.GetInfo('resource_types'),
        })

  def WriteServiceUnitTest(self, func, file, *extras):
    """Overrriden from TypeHandler."""
    valid_test = """
TEST_P(%(test_name)s, %(name)sValidArgs) {
  EXPECT_CALL(*gl_, %(gl_func_name)s(1, _))
      .WillOnce(SetArgumentPointee<1>(kNewServiceId));
  GetSharedMemoryAs<GLuint*>()[0] = kNewClientId;
  SpecializedSetup<cmds::%(name)s, 0>(true);
  cmds::%(name)s cmd;
  cmd.Init(%(args)s);
  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
  EXPECT_EQ(GL_NO_ERROR, GetGLError());
  EXPECT_TRUE(Get%(resource_name)s(kNewClientId) != NULL);
}
"""
    self.WriteValidUnitTest(func, file, valid_test, {
        'resource_name': func.GetInfo('resource_type'),
      }, *extras)
    invalid_test = """
TEST_P(%(test_name)s, %(name)sInvalidArgs) {
  EXPECT_CALL(*gl_, %(gl_func_name)s(_, _)).Times(0);
  GetSharedMemoryAs<GLuint*>()[0] = client_%(resource_name)s_id_;
  SpecializedSetup<cmds::%(name)s, 0>(false);
  cmds::%(name)s cmd;
  cmd.Init(%(args)s);
  EXPECT_EQ(error::kInvalidArguments, ExecuteCmd(cmd));
}
"""
    self.WriteValidUnitTest(func, file, invalid_test, {
          'resource_name': func.GetInfo('resource_type').lower(),
        }, *extras)

  def WriteImmediateServiceUnitTest(self, func, file, *extras):
    """Overrriden from TypeHandler."""
    valid_test = """
TEST_P(%(test_name)s, %(name)sValidArgs) {
  EXPECT_CALL(*gl_, %(gl_func_name)s(1, _))
      .WillOnce(SetArgumentPointee<1>(kNewServiceId));
  cmds::%(name)s* cmd = GetImmediateAs<cmds::%(name)s>();
  GLuint temp = kNewClientId;
  SpecializedSetup<cmds::%(name)s, 0>(true);
  cmd->Init(1, &temp);
  EXPECT_EQ(error::kNoError,
            ExecuteImmediateCmd(*cmd, sizeof(temp)));
  EXPECT_EQ(GL_NO_ERROR, GetGLError());
  EXPECT_TRUE(Get%(resource_name)s(kNewClientId) != NULL);
}
"""
    self.WriteValidUnitTest(func, file, valid_test, {
        'resource_name': func.GetInfo('resource_type'),
      }, *extras)
    invalid_test = """
TEST_P(%(test_name)s, %(name)sInvalidArgs) {
  EXPECT_CALL(*gl_, %(gl_func_name)s(_, _)).Times(0);
  cmds::%(name)s* cmd = GetImmediateAs<cmds::%(name)s>();
  SpecializedSetup<cmds::%(name)s, 0>(false);
  cmd->Init(1, &client_%(resource_name)s_id_);
  EXPECT_EQ(error::kInvalidArguments,
            ExecuteImmediateCmd(*cmd, sizeof(&client_%(resource_name)s_id_)));
}
"""
    self.WriteValidUnitTest(func, file, invalid_test, {
          'resource_name': func.GetInfo('resource_type').lower(),
        }, *extras)

  def WriteImmediateCmdComputeSize(self, func, file):
    """Overrriden from TypeHandler."""
    file.Write("  static uint32_t ComputeDataSize(GLsizei n) {\n")
    file.Write(
        "    return static_cast<uint32_t>(sizeof(GLuint) * n);  // NOLINT\n")
    file.Write("  }\n")
    file.Write("\n")
    file.Write("  static uint32_t ComputeSize(GLsizei n) {\n")
    file.Write("    return static_cast<uint32_t>(\n")
    file.Write("        sizeof(ValueType) + ComputeDataSize(n));  // NOLINT\n")
    file.Write("  }\n")
    file.Write("\n")

  def WriteImmediateCmdSetHeader(self, func, file):
    """Overrriden from TypeHandler."""
    file.Write("  void SetHeader(GLsizei n) {\n")
    file.Write("    header.SetCmdByTotalSize<ValueType>(ComputeSize(n));\n")
    file.Write("  }\n")
    file.Write("\n")

  def WriteImmediateCmdInit(self, func, file):
    """Overrriden from TypeHandler."""
    last_arg = func.GetLastOriginalArg()
    file.Write("  void Init(%s, %s _%s) {\n" %
               (func.MakeTypedCmdArgString("_"),
                last_arg.type, last_arg.name))
    file.Write("    SetHeader(_n);\n")
    args = func.GetCmdArgs()
    for arg in args:
      file.Write("    %s = _%s;\n" % (arg.name, arg.name))
    file.Write("    memcpy(ImmediateDataAddress(this),\n")
    file.Write("           _%s, ComputeDataSize(_n));\n" % last_arg.name)
    file.Write("  }\n")
    file.Write("\n")

  def WriteImmediateCmdSet(self, func, file):
    """Overrriden from TypeHandler."""
    last_arg = func.GetLastOriginalArg()
    copy_args = func.MakeCmdArgString("_", False)
    file.Write("  void* Set(void* cmd%s, %s _%s) {\n" %
               (func.MakeTypedCmdArgString("_", True),
                last_arg.type, last_arg.name))
    file.Write("    static_cast<ValueType*>(cmd)->Init(%s, _%s);\n" %
               (copy_args, last_arg.name))
    file.Write("    const uint32_t size = ComputeSize(_n);\n")
    file.Write("    return NextImmediateCmdAddressTotalSize<ValueType>("
               "cmd, size);\n")
    file.Write("  }\n")
    file.Write("\n")

  def WriteImmediateCmdHelper(self, func, file):
    """Overrriden from TypeHandler."""
    code = """  void %(name)s(%(typed_args)s) {
    const uint32_t size = gles2::cmds::%(name)s::ComputeSize(n);
    gles2::cmds::%(name)s* c =
        GetImmediateCmdSpaceTotalSize<gles2::cmds::%(name)s>(size);
    if (c) {
      c->Init(%(args)s);
    }
  }

"""
    file.Write(code % {
          "name": func.name,
          "typed_args": func.MakeTypedOriginalArgString(""),
          "args": func.MakeOriginalArgString(""),
        })

  def WriteImmediateFormatTest(self, func, file):
    """Overrriden from TypeHandler."""
    file.Write("TEST_F(GLES2FormatTest, %s) {\n" % func.name)
    file.Write("  static GLuint ids[] = { 12, 23, 34, };\n")
    file.Write("  cmds::%s& cmd = *GetBufferAs<cmds::%s>();\n" %
               (func.name, func.name))
    file.Write("  void* next_cmd = cmd.Set(\n")
    file.Write("      &cmd, static_cast<GLsizei>(arraysize(ids)), ids);\n")
    file.Write("  EXPECT_EQ(static_cast<uint32_t>(cmds::%s::kCmdId),\n" %
               func.name)
    file.Write("            cmd.header.command);\n")
    file.Write("  EXPECT_EQ(sizeof(cmd) +\n")
    file.Write("            RoundSizeToMultipleOfEntries(cmd.n * 4u),\n")
    file.Write("            cmd.header.size * 4u);\n")
    file.Write("  EXPECT_EQ(static_cast<GLsizei>(arraysize(ids)), cmd.n);\n");
    file.Write("  CheckBytesWrittenMatchesExpectedSize(\n")
    file.Write("      next_cmd, sizeof(cmd) +\n")
    file.Write("      RoundSizeToMultipleOfEntries(arraysize(ids) * 4u));\n")
    file.Write("  // TODO(gman): Check that ids were inserted;\n")
    file.Write("}\n")
    file.Write("\n")


class CreateHandler(TypeHandler):
  """Handler for glCreate___ type functions."""

  def __init__(self):
    TypeHandler.__init__(self)

  def InitFunction(self, func):
    """Overrriden from TypeHandler."""
    func.AddCmdArg(Argument("client_id", 'uint32_t'))

  def WriteServiceUnitTest(self, func, file, *extras):
    """Overrriden from TypeHandler."""
    valid_test = """
TEST_P(%(test_name)s, %(name)sValidArgs) {
  EXPECT_CALL(*gl_, %(gl_func_name)s(%(gl_args)s))
      .WillOnce(Return(kNewServiceId));
  SpecializedSetup<cmds::%(name)s, 0>(true);
  cmds::%(name)s cmd;
  cmd.Init(%(args)s%(comma)skNewClientId);
  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
  EXPECT_EQ(GL_NO_ERROR, GetGLError());
  EXPECT_TRUE(Get%(resource_type)s(kNewClientId) != NULL);
}
"""
    comma = ""
    if len(func.GetOriginalArgs()):
      comma =", "
    self.WriteValidUnitTest(func, file, valid_test, {
          'comma': comma,
          'resource_type': func.name[6:],
        }, *extras)
    invalid_test = """
TEST_P(%(test_name)s, %(name)sInvalidArgs%(arg_index)d_%(value_index)d) {
  EXPECT_CALL(*gl_, %(gl_func_name)s(%(gl_args)s)).Times(0);
  SpecializedSetup<cmds::%(name)s, 0>(false);
  cmds::%(name)s cmd;
  cmd.Init(%(args)s%(comma)skNewClientId);
  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));%(gl_error_test)s
}
"""
    self.WriteInvalidUnitTest(func, file, invalid_test, {
          'comma': comma,
        }, *extras)

  def WriteHandlerImplementation (self, func, file):
    """Overrriden from TypeHandler."""
    file.Write("  uint32_t client_id = c.client_id;\n")
    file.Write("  if (!%sHelper(%s)) {\n" %
               (func.name, func.MakeCmdArgString("")))
    file.Write("    return error::kInvalidArguments;\n")
    file.Write("  }\n")

  def WriteGLES2Implementation(self, func, file):
    """Overrriden from TypeHandler."""
    file.Write("%s GLES2Implementation::%s(%s) {\n" %
               (func.return_type, func.original_name,
                func.MakeTypedOriginalArgString("")))
    file.Write("  GPU_CLIENT_SINGLE_THREAD_CHECK();\n")
    func.WriteDestinationInitalizationValidation(file)
    self.WriteClientGLCallLog(func, file)
    for arg in func.GetOriginalArgs():
      arg.WriteClientSideValidationCode(file, func)
    file.Write("  GLuint client_id;\n")
    file.Write(
        "  GetIdHandler(id_namespaces::kProgramsAndShaders)->\n")
    file.Write("      MakeIds(this, 0, 1, &client_id);\n")
    file.Write("  helper_->%s(%s);\n" %
               (func.name, func.MakeCmdArgString("")))
    file.Write('  GPU_CLIENT_LOG("returned " << client_id);\n')
    file.Write("  CheckGLError();\n")
    file.Write("  return client_id;\n")
    file.Write("}\n")
    file.Write("\n")


class DeleteHandler(TypeHandler):
  """Handler for glDelete___ single resource type functions."""

  def __init__(self):
    TypeHandler.__init__(self)

  def WriteServiceImplementation(self, func, file):
    """Overrriden from TypeHandler."""
    pass

  def WriteGLES2Implementation(self, func, file):
    """Overrriden from TypeHandler."""
    file.Write("%s GLES2Implementation::%s(%s) {\n" %
               (func.return_type, func.original_name,
                func.MakeTypedOriginalArgString("")))
    file.Write("  GPU_CLIENT_SINGLE_THREAD_CHECK();\n")
    func.WriteDestinationInitalizationValidation(file)
    self.WriteClientGLCallLog(func, file)
    for arg in func.GetOriginalArgs():
      arg.WriteClientSideValidationCode(file, func)
    file.Write(
        "  GPU_CLIENT_DCHECK(%s != 0);\n" % func.GetOriginalArgs()[-1].name)
    file.Write("  %sHelper(%s);\n" %
               (func.original_name, func.GetOriginalArgs()[-1].name))
    file.Write("  CheckGLError();\n")
    file.Write("}\n")
    file.Write("\n")


class DELnHandler(TypeHandler):
  """Handler for glDelete___ type functions."""

  def __init__(self):
    TypeHandler.__init__(self)

  def WriteGetDataSizeCode(self, func, file):
    """Overrriden from TypeHandler."""
    code = """  uint32_t data_size;
  if (!SafeMultiplyUint32(n, sizeof(GLuint), &data_size)) {
    return error::kOutOfBounds;
  }
"""
    file.Write(code)

  def WriteGLES2ImplementationUnitTest(self, func, file):
    """Overrriden from TypeHandler."""
    code = """
TEST_F(GLES2ImplementationTest, %(name)s) {
  GLuint ids[2] = { k%(types)sStartId, k%(types)sStartId + 1 };
  struct Cmds {
    cmds::%(name)sImmediate del;
    GLuint data[2];
  };
  Cmds expected;
  expected.del.Init(arraysize(ids), &ids[0]);
  expected.data[0] = k%(types)sStartId;
  expected.data[1] = k%(types)sStartId + 1;
  gl_->%(name)s(arraysize(ids), &ids[0]);
  EXPECT_EQ(0, memcmp(&expected, commands_, sizeof(expected)));
}
"""
    file.Write(code % {
          'name': func.name,
          'types': func.GetInfo('resource_types'),
        })

  def WriteServiceUnitTest(self, func, file, *extras):
    """Overrriden from TypeHandler."""
    valid_test = """
TEST_P(%(test_name)s, %(name)sValidArgs) {
  EXPECT_CALL(
      *gl_,
      %(gl_func_name)s(1, Pointee(kService%(upper_resource_name)sId)))
      .Times(1);
  GetSharedMemoryAs<GLuint*>()[0] = client_%(resource_name)s_id_;
  SpecializedSetup<cmds::%(name)s, 0>(true);
  cmds::%(name)s cmd;
  cmd.Init(%(args)s);
  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
  EXPECT_EQ(GL_NO_ERROR, GetGLError());
  EXPECT_TRUE(
      Get%(upper_resource_name)s(client_%(resource_name)s_id_) == NULL);
}
"""
    self.WriteValidUnitTest(func, file, valid_test, {
          'resource_name': func.GetInfo('resource_type').lower(),
          'upper_resource_name': func.GetInfo('resource_type'),
        }, *extras)
    invalid_test = """
TEST_P(%(test_name)s, %(name)sInvalidArgs) {
  GetSharedMemoryAs<GLuint*>()[0] = kInvalidClientId;
  SpecializedSetup<cmds::%(name)s, 0>(false);
  cmds::%(name)s cmd;
  cmd.Init(%(args)s);
  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
}
"""
    self.WriteValidUnitTest(func, file, invalid_test, *extras)

  def WriteImmediateServiceUnitTest(self, func, file, *extras):
    """Overrriden from TypeHandler."""
    valid_test = """
TEST_P(%(test_name)s, %(name)sValidArgs) {
  EXPECT_CALL(
      *gl_,
      %(gl_func_name)s(1, Pointee(kService%(upper_resource_name)sId)))
      .Times(1);
  cmds::%(name)s& cmd = *GetImmediateAs<cmds::%(name)s>();
  SpecializedSetup<cmds::%(name)s, 0>(true);
  cmd.Init(1, &client_%(resource_name)s_id_);
  EXPECT_EQ(error::kNoError,
            ExecuteImmediateCmd(cmd, sizeof(client_%(resource_name)s_id_)));
  EXPECT_EQ(GL_NO_ERROR, GetGLError());
  EXPECT_TRUE(
      Get%(upper_resource_name)s(client_%(resource_name)s_id_) == NULL);
}
"""
    self.WriteValidUnitTest(func, file, valid_test, {
          'resource_name': func.GetInfo('resource_type').lower(),
          'upper_resource_name': func.GetInfo('resource_type'),
        }, *extras)
    invalid_test = """
TEST_P(%(test_name)s, %(name)sInvalidArgs) {
  cmds::%(name)s& cmd = *GetImmediateAs<cmds::%(name)s>();
  SpecializedSetup<cmds::%(name)s, 0>(false);
  GLuint temp = kInvalidClientId;
  cmd.Init(1, &temp);
  EXPECT_EQ(error::kNoError,
            ExecuteImmediateCmd(cmd, sizeof(temp)));
}
"""
    self.WriteValidUnitTest(func, file, invalid_test, *extras)

  def WriteHandlerImplementation (self, func, file):
    """Overrriden from TypeHandler."""
    file.Write("  %sHelper(n, %s);\n" %
               (func.name, func.GetLastOriginalArg().name))

  def WriteImmediateHandlerImplementation (self, func, file):
    """Overrriden from TypeHandler."""
    file.Write("  %sHelper(n, %s);\n" %
               (func.original_name, func.GetLastOriginalArg().name))

  def WriteGLES2Implementation(self, func, file):
    """Overrriden from TypeHandler."""
    impl_decl = func.GetInfo('impl_decl')
    if impl_decl == None or impl_decl == True:
      args = {
          'return_type': func.return_type,
          'name': func.original_name,
          'typed_args': func.MakeTypedOriginalArgString(""),
          'args': func.MakeOriginalArgString(""),
          'resource_type': func.GetInfo('resource_type').lower(),
          'count_name': func.GetOriginalArgs()[0].name,
        }
      file.Write(
          "%(return_type)s GLES2Implementation::%(name)s(%(typed_args)s) {\n" %
          args)
      file.Write("  GPU_CLIENT_SINGLE_THREAD_CHECK();\n")
      func.WriteDestinationInitalizationValidation(file)
      self.WriteClientGLCallLog(func, file)
      file.Write("""  GPU_CLIENT_LOG_CODE_BLOCK({
    for (GLsizei i = 0; i < n; ++i) {
      GPU_CLIENT_LOG("  " << i << ": " << %s[i]);
    }
  });
""" % func.GetOriginalArgs()[1].name)
      file.Write("""  GPU_CLIENT_DCHECK_CODE_BLOCK({
    for (GLsizei i = 0; i < n; ++i) {
      DCHECK(%s[i] != 0);
    }
  });
""" % func.GetOriginalArgs()[1].name)
      for arg in func.GetOriginalArgs():
        arg.WriteClientSideValidationCode(file, func)
      code = """  %(name)sHelper(%(args)s);
  CheckGLError();
}

"""
      file.Write(code % args)

  def WriteImmediateCmdComputeSize(self, func, file):
    """Overrriden from TypeHandler."""
    file.Write("  static uint32_t ComputeDataSize(GLsizei n) {\n")
    file.Write(
        "    return static_cast<uint32_t>(sizeof(GLuint) * n);  // NOLINT\n")
    file.Write("  }\n")
    file.Write("\n")
    file.Write("  static uint32_t ComputeSize(GLsizei n) {\n")
    file.Write("    return static_cast<uint32_t>(\n")
    file.Write("        sizeof(ValueType) + ComputeDataSize(n));  // NOLINT\n")
    file.Write("  }\n")
    file.Write("\n")

  def WriteImmediateCmdSetHeader(self, func, file):
    """Overrriden from TypeHandler."""
    file.Write("  void SetHeader(GLsizei n) {\n")
    file.Write("    header.SetCmdByTotalSize<ValueType>(ComputeSize(n));\n")
    file.Write("  }\n")
    file.Write("\n")

  def WriteImmediateCmdInit(self, func, file):
    """Overrriden from TypeHandler."""
    last_arg = func.GetLastOriginalArg()
    file.Write("  void Init(%s, %s _%s) {\n" %
               (func.MakeTypedCmdArgString("_"),
                last_arg.type, last_arg.name))
    file.Write("    SetHeader(_n);\n")
    args = func.GetCmdArgs()
    for arg in args:
      file.Write("    %s = _%s;\n" % (arg.name, arg.name))
    file.Write("    memcpy(ImmediateDataAddress(this),\n")
    file.Write("           _%s, ComputeDataSize(_n));\n" % last_arg.name)
    file.Write("  }\n")
    file.Write("\n")

  def WriteImmediateCmdSet(self, func, file):
    """Overrriden from TypeHandler."""
    last_arg = func.GetLastOriginalArg()
    copy_args = func.MakeCmdArgString("_", False)
    file.Write("  void* Set(void* cmd%s, %s _%s) {\n" %
               (func.MakeTypedCmdArgString("_", True),
                last_arg.type, last_arg.name))
    file.Write("    static_cast<ValueType*>(cmd)->Init(%s, _%s);\n" %
               (copy_args, last_arg.name))
    file.Write("    const uint32_t size = ComputeSize(_n);\n")
    file.Write("    return NextImmediateCmdAddressTotalSize<ValueType>("
               "cmd, size);\n")
    file.Write("  }\n")
    file.Write("\n")

  def WriteImmediateCmdHelper(self, func, file):
    """Overrriden from TypeHandler."""
    code = """  void %(name)s(%(typed_args)s) {
    const uint32_t size = gles2::cmds::%(name)s::ComputeSize(n);
    gles2::cmds::%(name)s* c =
        GetImmediateCmdSpaceTotalSize<gles2::cmds::%(name)s>(size);
    if (c) {
      c->Init(%(args)s);
    }
  }

"""
    file.Write(code % {
          "name": func.name,
          "typed_args": func.MakeTypedOriginalArgString(""),
          "args": func.MakeOriginalArgString(""),
        })

  def WriteImmediateFormatTest(self, func, file):
    """Overrriden from TypeHandler."""
    file.Write("TEST_F(GLES2FormatTest, %s) {\n" % func.name)
    file.Write("  static GLuint ids[] = { 12, 23, 34, };\n")
    file.Write("  cmds::%s& cmd = *GetBufferAs<cmds::%s>();\n" %
               (func.name, func.name))
    file.Write("  void* next_cmd = cmd.Set(\n")
    file.Write("      &cmd, static_cast<GLsizei>(arraysize(ids)), ids);\n")
    file.Write("  EXPECT_EQ(static_cast<uint32_t>(cmds::%s::kCmdId),\n" %
               func.name)
    file.Write("            cmd.header.command);\n")
    file.Write("  EXPECT_EQ(sizeof(cmd) +\n")
    file.Write("            RoundSizeToMultipleOfEntries(cmd.n * 4u),\n")
    file.Write("            cmd.header.size * 4u);\n")
    file.Write("  EXPECT_EQ(static_cast<GLsizei>(arraysize(ids)), cmd.n);\n");
    file.Write("  CheckBytesWrittenMatchesExpectedSize(\n")
    file.Write("      next_cmd, sizeof(cmd) +\n")
    file.Write("      RoundSizeToMultipleOfEntries(arraysize(ids) * 4u));\n")
    file.Write("  // TODO(gman): Check that ids were inserted;\n")
    file.Write("}\n")
    file.Write("\n")


class GETnHandler(TypeHandler):
  """Handler for GETn for glGetBooleanv, glGetFloatv, ... type functions."""

  def __init__(self):
    TypeHandler.__init__(self)

  def NeedsDataTransferFunction(self, func):
    """Overriden from TypeHandler."""
    return False

  def WriteServiceImplementation(self, func, file):
    """Overrriden from TypeHandler."""
    self.WriteServiceHandlerFunctionHeader(func, file)
    last_arg = func.GetLastOriginalArg()

    all_but_last_args = func.GetOriginalArgs()[:-1]
    for arg in all_but_last_args:
      arg.WriteGetCode(file)

    code = """  typedef cmds::%(func_name)s::Result Result;
  GLsizei num_values = 0;
  GetNumValuesReturnedForGLGet(pname, &num_values);
  Result* result = GetSharedMemoryAs<Result*>(
      c.params_shm_id, c.params_shm_offset, Result::ComputeSize(num_values));
  %(last_arg_type)s params = result ? result->GetData() : NULL;
"""
    file.Write(code % {
        'last_arg_type': last_arg.type,
        'func_name': func.name,
      })
    func.WriteHandlerValidation(file)
    code = """  // Check that the client initialized the result.
  if (result->size != 0) {
    return error::kInvalidArguments;
  }
"""
    shadowed = func.GetInfo('shadowed')
    if not shadowed:
      file.Write('  LOCAL_COPY_REAL_GL_ERRORS_TO_WRAPPER("%s");\n' % func.name)
    file.Write(code)
    func.WriteHandlerImplementation(file)
    if shadowed:
      code = """  result->SetNumResults(num_values);
  return error::kNoError;
}
"""
    else:
     code = """  GLenum error = glGetError();
  if (error == GL_NO_ERROR) {
    result->SetNumResults(num_values);
  } else {
    LOCAL_SET_GL_ERROR(error, "%(func_name)s", "");
  }
  return error::kNoError;
}

"""
    file.Write(code % {'func_name': func.name})

  def WriteGLES2Implementation(self, func, file):
    """Overrriden from TypeHandler."""
    impl_decl = func.GetInfo('impl_decl')
    if impl_decl == None or impl_decl == True:
      file.Write("%s GLES2Implementation::%s(%s) {\n" %
                 (func.return_type, func.original_name,
                  func.MakeTypedOriginalArgString("")))
      file.Write("  GPU_CLIENT_SINGLE_THREAD_CHECK();\n")
      func.WriteDestinationInitalizationValidation(file)
      self.WriteClientGLCallLog(func, file)
      for arg in func.GetOriginalArgs():
        arg.WriteClientSideValidationCode(file, func)
      all_but_last_args = func.GetOriginalArgs()[:-1]
      arg_string = (
          ", ".join(["%s" % arg.name for arg in all_but_last_args]))
      all_arg_string = (
          ", ".join([
            "%s" % arg.name
              for arg in func.GetOriginalArgs() if not arg.IsConstant()]))
      self.WriteTraceEvent(func, file)
      code = """  if (%(func_name)sHelper(%(all_arg_string)s)) {
    return;
  }
  typedef cmds::%(func_name)s::Result Result;
  Result* result = GetResultAs<Result*>();
  if (!result) {
    return;
  }
  result->SetNumResults(0);
  helper_->%(func_name)s(%(arg_string)s,
      GetResultShmId(), GetResultShmOffset());
  WaitForCmd();
  result->CopyResult(params);
  GPU_CLIENT_LOG_CODE_BLOCK({
    for (int32_t i = 0; i < result->GetNumResults(); ++i) {
      GPU_CLIENT_LOG("  " << i << ": " << result->GetData()[i]);
    }
  });
  CheckGLError();
}
"""
      file.Write(code % {
          'func_name': func.name,
          'arg_string': arg_string,
          'all_arg_string': all_arg_string,
        })

  def WriteGLES2ImplementationUnitTest(self, func, file):
    """Writes the GLES2 Implemention unit test."""
    code = """
TEST_F(GLES2ImplementationTest, %(name)s) {
  struct Cmds {
    cmds::%(name)s cmd;
  };
  typedef cmds::%(name)s::Result Result;
  Result::Type result = 0;
  Cmds expected;
  ExpectedMemoryInfo result1 = GetExpectedResultMemory(4);
  expected.cmd.Init(%(cmd_args)s, result1.id, result1.offset);
  EXPECT_CALL(*command_buffer(), OnFlush())
      .WillOnce(SetMemory(result1.ptr, SizedResultHelper<Result::Type>(1)))
      .RetiresOnSaturation();
  gl_->%(name)s(%(args)s, &result);
  EXPECT_EQ(0, memcmp(&expected, commands_, sizeof(expected)));
  EXPECT_EQ(static_cast<Result::Type>(1), result);
}
"""
    first_cmd_arg = func.GetCmdArgs()[0].GetValidNonCachedClientSideCmdArg(func)
    if not first_cmd_arg:
      return

    first_gl_arg = func.GetCmdArgs()[0].GetValidNonCachedClientSideArg(func)
    cmd_arg_strings = [first_cmd_arg]
    for arg in func.GetCmdArgs()[1:-2]:
      cmd_arg_strings.append(arg.GetValidClientSideCmdArg(func))
    gl_arg_strings = [first_gl_arg]
    for arg in func.GetOriginalArgs()[1:-1]:
      gl_arg_strings.append(arg.GetValidClientSideArg(func))

    file.Write(code % {
          'name': func.name,
          'args': ", ".join(gl_arg_strings),
          'cmd_args': ", ".join(cmd_arg_strings),
        })

  def WriteServiceUnitTest(self, func, file, *extras):
    """Overrriden from TypeHandler."""
    valid_test = """
TEST_P(%(test_name)s, %(name)sValidArgs) {
  EXPECT_CALL(*gl_, GetError())
      .WillOnce(Return(GL_NO_ERROR))
      .WillOnce(Return(GL_NO_ERROR))
      .RetiresOnSaturation();
  SpecializedSetup<cmds::%(name)s, 0>(true);
  typedef cmds::%(name)s::Result Result;
  Result* result = static_cast<Result*>(shared_memory_address_);
  EXPECT_CALL(*gl_, %(gl_func_name)s(%(local_gl_args)s));
  result->size = 0;
  cmds::%(name)s cmd;
  cmd.Init(%(args)s);
  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
  EXPECT_EQ(decoder_->GetGLES2Util()->GLGetNumValuesReturned(
                %(valid_pname)s),
            result->GetNumResults());
  EXPECT_EQ(GL_NO_ERROR, GetGLError());
}
"""
    gl_arg_strings = []
    valid_pname = ''
    for arg in func.GetOriginalArgs()[:-1]:
      arg_value = arg.GetValidGLArg(func)
      gl_arg_strings.append(arg_value)
      if arg.name == 'pname':
        valid_pname = arg_value
    if func.GetInfo('gl_test_func') == 'glGetIntegerv':
      gl_arg_strings.append("_")
    else:
      gl_arg_strings.append("result->GetData()")

    self.WriteValidUnitTest(func, file, valid_test, {
        'local_gl_args': ", ".join(gl_arg_strings),
        'valid_pname': valid_pname,
      }, *extras)

    invalid_test = """
TEST_P(%(test_name)s, %(name)sInvalidArgs%(arg_index)d_%(value_index)d) {
  EXPECT_CALL(*gl_, %(gl_func_name)s(%(gl_args)s)).Times(0);
  SpecializedSetup<cmds::%(name)s, 0>(false);
  cmds::%(name)s::Result* result =
      static_cast<cmds::%(name)s::Result*>(shared_memory_address_);
  result->size = 0;
  cmds::%(name)s cmd;
  cmd.Init(%(args)s);
  EXPECT_EQ(error::%(parse_result)s, ExecuteCmd(cmd));
  EXPECT_EQ(0u, result->size);%(gl_error_test)s
}
"""
    self.WriteInvalidUnitTest(func, file, invalid_test, *extras)

class ArrayArgTypeHandler(TypeHandler):
  """Base class for type handlers that handle args that are arrays"""

  def __init__(self):
    TypeHandler.__init__(self)

  def GetArrayType(self, func):
    """Returns the type of the element in the element array being PUT to."""
    for arg in func.GetOriginalArgs():
      if arg.IsPointer():
        element_type = arg.GetPointedType()
        return element_type

    # Special case: array type handler is used for a function that is forwarded
    # to the actual array type implementation
    element_type = func.GetOriginalArgs()[-1].type
    assert all(arg.type == element_type \
               for arg in func.GetOriginalArgs()[-self.GetArrayCount(func):])
    return element_type

  def GetArrayCount(self, func):
    """Returns the count of the elements in the array being PUT to."""
    return func.GetInfo('count')

class PUTHandler(ArrayArgTypeHandler):
  """Handler for glTexParameter_v, glVertexAttrib_v functions."""

  def __init__(self):
    ArrayArgTypeHandler.__init__(self)

  def WriteServiceUnitTest(self, func, file, *extras):
    """Writes the service unit test for a command."""
    expected_call = "EXPECT_CALL(*gl_, %(gl_func_name)s(%(gl_args)s));"
    if func.GetInfo("first_element_only"):
      gl_arg_strings = [
        arg.GetValidGLArg(func) for arg in func.GetOriginalArgs()
      ]
      gl_arg_strings[-1] = "*" + gl_arg_strings[-1]
      expected_call = ("EXPECT_CALL(*gl_, %%(gl_func_name)s(%s));" %
          ", ".join(gl_arg_strings))
    valid_test = """
TEST_P(%(test_name)s, %(name)sValidArgs) {
  SpecializedSetup<cmds::%(name)s, 0>(true);
  cmds::%(name)s cmd;
  cmd.Init(%(args)s);
  GetSharedMemoryAs<%(data_type)s*>()[0] = %(data_value)s;
  %(expected_call)s
  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
  EXPECT_EQ(GL_NO_ERROR, GetGLError());
}
"""
    extra = {
      'data_type': self.GetArrayType(func),
      'data_value': func.GetInfo('data_value') or '0',
      'expected_call': expected_call,
    }
    self.WriteValidUnitTest(func, file, valid_test, extra, *extras)

    invalid_test = """
TEST_P(%(test_name)s, %(name)sInvalidArgs%(arg_index)d_%(value_index)d) {
  EXPECT_CALL(*gl_, %(gl_func_name)s(%(gl_args)s)).Times(0);
  SpecializedSetup<cmds::%(name)s, 0>(false);
  cmds::%(name)s cmd;
  cmd.Init(%(args)s);
  GetSharedMemoryAs<%(data_type)s*>()[0] = %(data_value)s;
  EXPECT_EQ(error::%(parse_result)s, ExecuteCmd(cmd));%(gl_error_test)s
}
"""
    self.WriteInvalidUnitTest(func, file, invalid_test, extra, *extras)

  def WriteImmediateServiceUnitTest(self, func, file, *extras):
    """Writes the service unit test for a command."""
    valid_test = """
TEST_P(%(test_name)s, %(name)sValidArgs) {
  cmds::%(name)s& cmd = *GetImmediateAs<cmds::%(name)s>();
  SpecializedSetup<cmds::%(name)s, 0>(true);
  %(data_type)s temp[%(data_count)s] = { %(data_value)s, };
  cmd.Init(%(gl_args)s, &temp[0]);
  EXPECT_CALL(
      *gl_,
      %(gl_func_name)s(%(gl_args)s, %(data_ref)sreinterpret_cast<
          %(data_type)s*>(ImmediateDataAddress(&cmd))));
  EXPECT_EQ(error::kNoError,
            ExecuteImmediateCmd(cmd, sizeof(temp)));
  EXPECT_EQ(GL_NO_ERROR, GetGLError());
}
"""
    gl_arg_strings = [
      arg.GetValidGLArg(func) for arg in func.GetOriginalArgs()[0:-1]
    ]
    gl_any_strings = ["_"] * len(gl_arg_strings)

    extra = {
      'data_ref': ("*" if func.GetInfo('first_element_only') else ""),
      'data_type': self.GetArrayType(func),
      'data_count': self.GetArrayCount(func),
      'data_value': func.GetInfo('data_value') or '0',
      'gl_args': ", ".join(gl_arg_strings),
      'gl_any_args': ", ".join(gl_any_strings),
    }
    self.WriteValidUnitTest(func, file, valid_test, extra, *extras)

    invalid_test = """
TEST_P(%(test_name)s, %(name)sInvalidArgs%(arg_index)d_%(value_index)d) {
  cmds::%(name)s& cmd = *GetImmediateAs<cmds::%(name)s>();
  EXPECT_CALL(*gl_, %(gl_func_name)s(%(gl_any_args)s, _)).Times(0);
  SpecializedSetup<cmds::%(name)s, 0>(false);
  %(data_type)s temp[%(data_count)s] = { %(data_value)s, };
  cmd.Init(%(all_but_last_args)s, &temp[0]);
  EXPECT_EQ(error::%(parse_result)s,
            ExecuteImmediateCmd(cmd, sizeof(temp)));%(gl_error_test)s
}
"""
    self.WriteInvalidUnitTest(func, file, invalid_test, extra, *extras)

  def WriteGetDataSizeCode(self, func, file):
    """Overrriden from TypeHandler."""
    code = """  uint32_t data_size;
  if (!ComputeDataSize(1, sizeof(%s), %d, &data_size)) {
    return error::kOutOfBounds;
  }
"""
    file.Write(code % (self.GetArrayType(func), self.GetArrayCount(func)))
    if func.IsImmediate():
      file.Write("  if (data_size > immediate_data_size) {\n")
      file.Write("    return error::kOutOfBounds;\n")
      file.Write("  }\n")

  def WriteGLES2Implementation(self, func, file):
    """Overrriden from TypeHandler."""
    impl_func = func.GetInfo('impl_func')
    if (impl_func != None and impl_func != True):
      return;
    file.Write("%s GLES2Implementation::%s(%s) {\n" %
               (func.return_type, func.original_name,
                func.MakeTypedOriginalArgString("")))
    file.Write("  GPU_CLIENT_SINGLE_THREAD_CHECK();\n")
    func.WriteDestinationInitalizationValidation(file)
    self.WriteClientGLCallLog(func, file)
    last_arg_name = func.GetLastOriginalArg().name
    values_str = ' << ", " << '.join(
        ["%s[%d]" % (last_arg_name, ndx) \
         for ndx in range(0, self.GetArrayCount(func))])
    file.Write('  GPU_CLIENT_LOG("values: " << %s);\n' % values_str)
    for arg in func.GetOriginalArgs():
      arg.WriteClientSideValidationCode(file, func)
    file.Write("  helper_->%sImmediate(%s);\n" %
               (func.name, func.MakeOriginalArgString("")))
    file.Write("  CheckGLError();\n")
    file.Write("}\n")
    file.Write("\n")

  def WriteGLES2ImplementationUnitTest(self, func, file):
    """Writes the GLES2 Implemention unit test."""
    client_test = func.GetInfo('client_test')
    if (client_test != None and client_test != True):
      return;
    code = """
TEST_F(GLES2ImplementationTest, %(name)s) {
  %(type)s data[%(count)d] = {0};
  struct Cmds {
    cmds::%(name)sImmediate cmd;
    %(type)s data[%(count)d];
  };

  for (int jj = 0; jj < %(count)d; ++jj) {
    data[jj] = static_cast<%(type)s>(jj);
  }
  Cmds expected;
  expected.cmd.Init(%(cmd_args)s, &data[0]);
  gl_->%(name)s(%(args)s, &data[0]);
  EXPECT_EQ(0, memcmp(&expected, commands_, sizeof(expected)));
}
"""
    cmd_arg_strings = [
      arg.GetValidClientSideCmdArg(func) for arg in func.GetCmdArgs()[0:-2]
    ]
    gl_arg_strings = [
      arg.GetValidClientSideArg(func) for arg in func.GetOriginalArgs()[0:-1]
    ]

    file.Write(code % {
          'name': func.name,
          'type': self.GetArrayType(func),
          'count': self.GetArrayCount(func),
          'args': ", ".join(gl_arg_strings),
          'cmd_args': ", ".join(cmd_arg_strings),
        })

  def WriteImmediateCmdComputeSize(self, func, file):
    """Overrriden from TypeHandler."""
    file.Write("  static uint32_t ComputeDataSize() {\n")
    file.Write("    return static_cast<uint32_t>(\n")
    file.Write("        sizeof(%s) * %d);  // NOLINT\n" %
               (self.GetArrayType(func), self.GetArrayCount(func)))
    file.Write("  }\n")
    file.Write("\n")
    file.Write("  static uint32_t ComputeSize() {\n")
    file.Write("    return static_cast<uint32_t>(\n")
    file.Write(
        "        sizeof(ValueType) + ComputeDataSize());  // NOLINT\n")
    file.Write("  }\n")
    file.Write("\n")

  def WriteImmediateCmdSetHeader(self, func, file):
    """Overrriden from TypeHandler."""
    file.Write("  void SetHeader() {\n")
    file.Write(
        "    header.SetCmdByTotalSize<ValueType>(ComputeSize());\n")
    file.Write("  }\n")
    file.Write("\n")

  def WriteImmediateCmdInit(self, func, file):
    """Overrriden from TypeHandler."""
    last_arg = func.GetLastOriginalArg()
    file.Write("  void Init(%s, %s _%s) {\n" %
               (func.MakeTypedCmdArgString("_"),
                last_arg.type, last_arg.name))
    file.Write("    SetHeader();\n")
    args = func.GetCmdArgs()
    for arg in args:
      file.Write("    %s = _%s;\n" % (arg.name, arg.name))
    file.Write("    memcpy(ImmediateDataAddress(this),\n")
    file.Write("           _%s, ComputeDataSize());\n" % last_arg.name)
    file.Write("  }\n")
    file.Write("\n")

  def WriteImmediateCmdSet(self, func, file):
    """Overrriden from TypeHandler."""
    last_arg = func.GetLastOriginalArg()
    copy_args = func.MakeCmdArgString("_", False)
    file.Write("  void* Set(void* cmd%s, %s _%s) {\n" %
               (func.MakeTypedCmdArgString("_", True),
                last_arg.type, last_arg.name))
    file.Write("    static_cast<ValueType*>(cmd)->Init(%s, _%s);\n" %
               (copy_args, last_arg.name))
    file.Write("    const uint32_t size = ComputeSize();\n")
    file.Write("    return NextImmediateCmdAddressTotalSize<ValueType>("
               "cmd, size);\n")
    file.Write("  }\n")
    file.Write("\n")

  def WriteImmediateCmdHelper(self, func, file):
    """Overrriden from TypeHandler."""
    code = """  void %(name)s(%(typed_args)s) {
    const uint32_t size = gles2::cmds::%(name)s::ComputeSize();
    gles2::cmds::%(name)s* c =
        GetImmediateCmdSpaceTotalSize<gles2::cmds::%(name)s>(size);
    if (c) {
      c->Init(%(args)s);
    }
  }

"""
    file.Write(code % {
          "name": func.name,
          "typed_args": func.MakeTypedOriginalArgString(""),
          "args": func.MakeOriginalArgString(""),
        })

  def WriteImmediateFormatTest(self, func, file):
    """Overrriden from TypeHandler."""
    file.Write("TEST_F(GLES2FormatTest, %s) {\n" % func.name)
    file.Write("  const int kSomeBaseValueToTestWith = 51;\n")
    file.Write("  static %s data[] = {\n" % self.GetArrayType(func))
    for v in range(0, self.GetArrayCount(func)):
      file.Write("    static_cast<%s>(kSomeBaseValueToTestWith + %d),\n" %
                 (self.GetArrayType(func), v))
    file.Write("  };\n")
    file.Write("  cmds::%s& cmd = *GetBufferAs<cmds::%s>();\n" %
               (func.name, func.name))
    file.Write("  void* next_cmd = cmd.Set(\n")
    file.Write("      &cmd")
    args = func.GetCmdArgs()
    for value, arg in enumerate(args):
      file.Write(",\n      static_cast<%s>(%d)" % (arg.type, value + 11))
    file.Write(",\n      data);\n")
    args = func.GetCmdArgs()
    file.Write("  EXPECT_EQ(static_cast<uint32_t>(cmds::%s::kCmdId),\n"
               % func.name)
    file.Write("            cmd.header.command);\n")
    file.Write("  EXPECT_EQ(sizeof(cmd) +\n")
    file.Write("            RoundSizeToMultipleOfEntries(sizeof(data)),\n")
    file.Write("            cmd.header.size * 4u);\n")
    for value, arg in enumerate(args):
      file.Write("  EXPECT_EQ(static_cast<%s>(%d), cmd.%s);\n" %
                 (arg.type, value + 11, arg.name))
    file.Write("  CheckBytesWrittenMatchesExpectedSize(\n")
    file.Write("      next_cmd, sizeof(cmd) +\n")
    file.Write("      RoundSizeToMultipleOfEntries(sizeof(data)));\n")
    file.Write("  // TODO(gman): Check that data was inserted;\n")
    file.Write("}\n")
    file.Write("\n")


class PUTnHandler(ArrayArgTypeHandler):
  """Handler for PUTn 'glUniform__v' type functions."""

  def __init__(self):
    ArrayArgTypeHandler.__init__(self)

  def WriteServiceUnitTest(self, func, file, *extras):
    """Overridden from TypeHandler."""
    ArrayArgTypeHandler.WriteServiceUnitTest(self, func, file, *extras)

    valid_test = """
TEST_P(%(test_name)s, %(name)sValidArgsCountTooLarge) {
  EXPECT_CALL(*gl_, %(gl_func_name)s(%(gl_args)s));
  SpecializedSetup<cmds::%(name)s, 0>(true);
  cmds::%(name)s cmd;
  cmd.Init(%(args)s);
  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
  EXPECT_EQ(GL_NO_ERROR, GetGLError());
}
"""
    gl_arg_strings = []
    arg_strings = []
    for count, arg in enumerate(func.GetOriginalArgs()):
      # hardcoded to match unit tests.
      if count == 0:
        # the location of the second element of the 2nd uniform.
        # defined in GLES2DecoderBase::SetupShaderForUniform
        gl_arg_strings.append("3")
        arg_strings.append("ProgramManager::MakeFakeLocation(1, 1)")
      elif count == 1:
        # the number of elements that gl will be called with.
        gl_arg_strings.append("3")
        # the number of elements requested in the command.
        arg_strings.append("5")
      else:
        gl_arg_strings.append(arg.GetValidGLArg(func))
        if not arg.IsConstant():
          arg_strings.append(arg.GetValidArg(func))
    extra = {
      'gl_args': ", ".join(gl_arg_strings),
      'args': ", ".join(arg_strings),
    }
    self.WriteValidUnitTest(func, file, valid_test, extra, *extras)

  def WriteImmediateServiceUnitTest(self, func, file, *extras):
    """Overridden from TypeHandler."""
    valid_test = """
TEST_P(%(test_name)s, %(name)sValidArgs) {
  cmds::%(name)s& cmd = *GetImmediateAs<cmds::%(name)s>();
  EXPECT_CALL(
      *gl_,
      %(gl_func_name)s(%(gl_args)s,
          reinterpret_cast<%(data_type)s*>(ImmediateDataAddress(&cmd))));
  SpecializedSetup<cmds::%(name)s, 0>(true);
  %(data_type)s temp[%(data_count)s * 2] = { 0, };
  cmd.Init(%(args)s, &temp[0]);
  EXPECT_EQ(error::kNoError,
            ExecuteImmediateCmd(cmd, sizeof(temp)));
  EXPECT_EQ(GL_NO_ERROR, GetGLError());
}
"""
    gl_arg_strings = []
    gl_any_strings = []
    arg_strings = []
    for arg in func.GetOriginalArgs()[0:-1]:
      gl_arg_strings.append(arg.GetValidGLArg(func))
      gl_any_strings.append("_")
      if not arg.IsConstant():
        arg_strings.append(arg.GetValidArg(func))
    extra = {
      'data_type': self.GetArrayType(func),
      'data_count': self.GetArrayCount(func),
      'args': ", ".join(arg_strings),
      'gl_args': ", ".join(gl_arg_strings),
      'gl_any_args': ", ".join(gl_any_strings),
    }
    self.WriteValidUnitTest(func, file, valid_test, extra, *extras)

    invalid_test = """
TEST_P(%(test_name)s, %(name)sInvalidArgs%(arg_index)d_%(value_index)d) {
  cmds::%(name)s& cmd = *GetImmediateAs<cmds::%(name)s>();
  EXPECT_CALL(*gl_, %(gl_func_name)s(%(gl_any_args)s, _)).Times(0);
  SpecializedSetup<cmds::%(name)s, 0>(false);
  %(data_type)s temp[%(data_count)s * 2] = { 0, };
  cmd.Init(%(all_but_last_args)s, &temp[0]);
  EXPECT_EQ(error::%(parse_result)s,
            ExecuteImmediateCmd(cmd, sizeof(temp)));%(gl_error_test)s
}
"""
    self.WriteInvalidUnitTest(func, file, invalid_test, extra, *extras)

  def WriteGetDataSizeCode(self, func, file):
    """Overrriden from TypeHandler."""
    code = """  uint32_t data_size;
  if (!ComputeDataSize(count, sizeof(%s), %d, &data_size)) {
    return error::kOutOfBounds;
  }
"""
    file.Write(code % (self.GetArrayType(func), self.GetArrayCount(func)))
    if func.IsImmediate():
      file.Write("  if (data_size > immediate_data_size) {\n")
      file.Write("    return error::kOutOfBounds;\n")
      file.Write("  }\n")

  def WriteGLES2Implementation(self, func, file):
    """Overrriden from TypeHandler."""
    file.Write("%s GLES2Implementation::%s(%s) {\n" %
               (func.return_type, func.original_name,
                func.MakeTypedOriginalArgString("")))
    file.Write("  GPU_CLIENT_SINGLE_THREAD_CHECK();\n")
    func.WriteDestinationInitalizationValidation(file)
    self.WriteClientGLCallLog(func, file)
    last_arg_name = func.GetLastOriginalArg().name
    file.Write("""  GPU_CLIENT_LOG_CODE_BLOCK({
    for (GLsizei i = 0; i < count; ++i) {
""")
    values_str = ' << ", " << '.join(
        ["%s[%d + i * %d]" % (
            last_arg_name, ndx, self.GetArrayCount(func)) for ndx in range(
                0, self.GetArrayCount(func))])
    file.Write('       GPU_CLIENT_LOG("  " << i << ": " << %s);\n' % values_str)
    file.Write("    }\n  });\n")
    for arg in func.GetOriginalArgs():
      arg.WriteClientSideValidationCode(file, func)
    file.Write("  helper_->%sImmediate(%s);\n" %
               (func.name, func.MakeInitString("")))
    file.Write("  CheckGLError();\n")
    file.Write("}\n")
    file.Write("\n")

  def WriteGLES2ImplementationUnitTest(self, func, file):
    """Writes the GLES2 Implemention unit test."""
    code = """
TEST_F(GLES2ImplementationTest, %(name)s) {
  %(type)s data[%(count_param)d][%(count)d] = {{0}};
  struct Cmds {
    cmds::%(name)sImmediate cmd;
    %(type)s data[%(count_param)d][%(count)d];
  };

  Cmds expected;
  for (int ii = 0; ii < %(count_param)d; ++ii) {
    for (int jj = 0; jj < %(count)d; ++jj) {
      data[ii][jj] = static_cast<%(type)s>(ii * %(count)d + jj);
    }
  }
  expected.cmd.Init(%(cmd_args)s, &data[0][0]);
  gl_->%(name)s(%(args)s, &data[0][0]);
  EXPECT_EQ(0, memcmp(&expected, commands_, sizeof(expected)));
}
"""
    cmd_arg_strings = [
      arg.GetValidClientSideCmdArg(func) for arg in func.GetCmdArgs()[0:-2]
    ]
    gl_arg_strings = []
    count_param = 0
    for arg in func.GetOriginalArgs()[0:-1]:
      valid_value = arg.GetValidClientSideArg(func)
      gl_arg_strings.append(valid_value)
      if arg.name == "count":
        count_param = int(valid_value)
    file.Write(code % {
          'name': func.name,
          'type': self.GetArrayType(func),
          'count': self.GetArrayCount(func),
          'args': ", ".join(gl_arg_strings),
          'cmd_args': ", ".join(cmd_arg_strings),
          'count_param': count_param,
        })

    # Test constants for invalid values, as they are not tested by the
    # service.
    constants = [
      arg for arg in func.GetOriginalArgs()[0:-1] if arg.IsConstant()
    ]
    if not constants:
      return

    code = """
TEST_F(GLES2ImplementationTest, %(name)sInvalidConstantArg%(invalid_index)d) {
  %(type)s data[%(count_param)d][%(count)d] = {{0}};
  for (int ii = 0; ii < %(count_param)d; ++ii) {
    for (int jj = 0; jj < %(count)d; ++jj) {
      data[ii][jj] = static_cast<%(type)s>(ii * %(count)d + jj);
    }
  }
  gl_->%(name)s(%(args)s, &data[0][0]);
  EXPECT_TRUE(NoCommandsWritten());
  EXPECT_EQ(%(gl_error)s, CheckError());
}
"""
    for invalid_arg in constants:
      gl_arg_strings = []
      invalid = invalid_arg.GetInvalidArg(func)
      for arg in func.GetOriginalArgs()[0:-1]:
        if arg is invalid_arg:
          gl_arg_strings.append(invalid[0])
        else:
          valid_value = arg.GetValidClientSideArg(func)
          gl_arg_strings.append(valid_value)
          if arg.name == "count":
            count_param = int(valid_value)

      file.Write(code % {
        'name': func.name,
        'invalid_index': func.GetOriginalArgs().index(invalid_arg),
        'type': self.GetArrayType(func),
        'count': self.GetArrayCount(func),
        'args': ", ".join(gl_arg_strings),
        'gl_error': invalid[2],
        'count_param': count_param,
      })


  def WriteImmediateCmdComputeSize(self, func, file):
    """Overrriden from TypeHandler."""
    file.Write("  static uint32_t ComputeDataSize(GLsizei count) {\n")
    file.Write("    return static_cast<uint32_t>(\n")
    file.Write("        sizeof(%s) * %d * count);  // NOLINT\n" %
               (self.GetArrayType(func), self.GetArrayCount(func)))
    file.Write("  }\n")
    file.Write("\n")
    file.Write("  static uint32_t ComputeSize(GLsizei count) {\n")
    file.Write("    return static_cast<uint32_t>(\n")
    file.Write(
        "        sizeof(ValueType) + ComputeDataSize(count));  // NOLINT\n")
    file.Write("  }\n")
    file.Write("\n")

  def WriteImmediateCmdSetHeader(self, func, file):
    """Overrriden from TypeHandler."""
    file.Write("  void SetHeader(GLsizei count) {\n")
    file.Write(
        "    header.SetCmdByTotalSize<ValueType>(ComputeSize(count));\n")
    file.Write("  }\n")
    file.Write("\n")

  def WriteImmediateCmdInit(self, func, file):
    """Overrriden from TypeHandler."""
    last_arg = func.GetLastOriginalArg()
    file.Write("  void Init(%s, %s _%s) {\n" %
               (func.MakeTypedCmdArgString("_"),
                last_arg.type, last_arg.name))
    file.Write("    SetHeader(_count);\n")
    args = func.GetCmdArgs()
    for arg in args:
      file.Write("    %s = _%s;\n" % (arg.name, arg.name))
    file.Write("    memcpy(ImmediateDataAddress(this),\n")
    file.Write("           _%s, ComputeDataSize(_count));\n" % last_arg.name)
    file.Write("  }\n")
    file.Write("\n")

  def WriteImmediateCmdSet(self, func, file):
    """Overrriden from TypeHandler."""
    last_arg = func.GetLastOriginalArg()
    copy_args = func.MakeCmdArgString("_", False)
    file.Write("  void* Set(void* cmd%s, %s _%s) {\n" %
               (func.MakeTypedCmdArgString("_", True),
                last_arg.type, last_arg.name))
    file.Write("    static_cast<ValueType*>(cmd)->Init(%s, _%s);\n" %
               (copy_args, last_arg.name))
    file.Write("    const uint32_t size = ComputeSize(_count);\n")
    file.Write("    return NextImmediateCmdAddressTotalSize<ValueType>("
               "cmd, size);\n")
    file.Write("  }\n")
    file.Write("\n")

  def WriteImmediateCmdHelper(self, func, file):
    """Overrriden from TypeHandler."""
    code = """  void %(name)s(%(typed_args)s) {
    const uint32_t size = gles2::cmds::%(name)s::ComputeSize(count);
    gles2::cmds::%(name)s* c =
        GetImmediateCmdSpaceTotalSize<gles2::cmds::%(name)s>(size);
    if (c) {
      c->Init(%(args)s);
    }
  }

"""
    file.Write(code % {
          "name": func.name,
          "typed_args": func.MakeTypedInitString(""),
          "args": func.MakeInitString("")
        })

  def WriteImmediateFormatTest(self, func, file):
    """Overrriden from TypeHandler."""
    args = func.GetCmdArgs()
    count_param = 0
    for arg in args:
      if arg.name == "count":
        count_param = int(arg.GetValidClientSideCmdArg(func))
    file.Write("TEST_F(GLES2FormatTest, %s) {\n" % func.name)
    file.Write("  const int kSomeBaseValueToTestWith = 51;\n")
    file.Write("  static %s data[] = {\n" % self.GetArrayType(func))
    for v in range(0, self.GetArrayCount(func) * count_param):
      file.Write("    static_cast<%s>(kSomeBaseValueToTestWith + %d),\n" %
                 (self.GetArrayType(func), v))
    file.Write("  };\n")
    file.Write("  cmds::%s& cmd = *GetBufferAs<cmds::%s>();\n" %
               (func.name, func.name))
    file.Write("  const GLsizei kNumElements = %d;\n" % count_param)
    file.Write("  const size_t kExpectedCmdSize =\n")
    file.Write("      sizeof(cmd) + kNumElements * sizeof(%s) * %d;\n" %
               (self.GetArrayType(func), self.GetArrayCount(func)))
    file.Write("  void* next_cmd = cmd.Set(\n")
    file.Write("      &cmd")
    for value, arg in enumerate(args):
      file.Write(",\n      static_cast<%s>(%d)" % (arg.type, value + 1))
    file.Write(",\n      data);\n")
    file.Write("  EXPECT_EQ(static_cast<uint32_t>(cmds::%s::kCmdId),\n" %
               func.name)
    file.Write("            cmd.header.command);\n")
    file.Write("  EXPECT_EQ(kExpectedCmdSize, cmd.header.size * 4u);\n")
    for value, arg in enumerate(args):
      file.Write("  EXPECT_EQ(static_cast<%s>(%d), cmd.%s);\n" %
                 (arg.type, value + 1, arg.name))
    file.Write("  CheckBytesWrittenMatchesExpectedSize(\n")
    file.Write("      next_cmd, sizeof(cmd) +\n")
    file.Write("      RoundSizeToMultipleOfEntries(sizeof(data)));\n")
    file.Write("  // TODO(gman): Check that data was inserted;\n")
    file.Write("}\n")
    file.Write("\n")


class PUTXnHandler(ArrayArgTypeHandler):
  """Handler for glUniform?f functions."""
  def __init__(self):
    ArrayArgTypeHandler.__init__(self)

  def WriteHandlerImplementation(self, func, file):
    """Overrriden from TypeHandler."""
    code = """  %(type)s temp[%(count)s] = { %(values)s};
  Do%(name)sv(%(location)s, 1, &temp[0]);
"""
    values = ""
    args = func.GetOriginalArgs()
    count = int(self.GetArrayCount(func))
    num_args = len(args)
    for ii in range(count):
      values += "%s, " % args[len(args) - count + ii].name

    file.Write(code % {
        'name': func.name,
        'count': self.GetArrayCount(func),
        'type': self.GetArrayType(func),
        'location': args[0].name,
        'args': func.MakeOriginalArgString(""),
        'values': values,
      })

  def WriteServiceUnitTest(self, func, file, *extras):
    """Overrriden from TypeHandler."""
    valid_test = """
TEST_P(%(test_name)s, %(name)sValidArgs) {
  EXPECT_CALL(*gl_, %(name)sv(%(local_args)s));
  SpecializedSetup<cmds::%(name)s, 0>(true);
  cmds::%(name)s cmd;
  cmd.Init(%(args)s);
  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
  EXPECT_EQ(GL_NO_ERROR, GetGLError());
}
"""
    args = func.GetOriginalArgs()
    local_args = "%s, 1, _" % args[0].GetValidGLArg(func)
    self.WriteValidUnitTest(func, file, valid_test, {
        'name': func.name,
        'count': self.GetArrayCount(func),
        'local_args': local_args,
      }, *extras)

    invalid_test = """
TEST_P(%(test_name)s, %(name)sInvalidArgs%(arg_index)d_%(value_index)d) {
  EXPECT_CALL(*gl_, %(name)sv(_, _, _).Times(0);
  SpecializedSetup<cmds::%(name)s, 0>(false);
  cmds::%(name)s cmd;
  cmd.Init(%(args)s);
  EXPECT_EQ(error::%(parse_result)s, ExecuteCmd(cmd));%(gl_error_test)s
}
"""
    self.WriteInvalidUnitTest(func, file, invalid_test, {
        'name': func.GetInfo('name'),
        'count': self.GetArrayCount(func),
      })


class GLcharHandler(CustomHandler):
  """Handler for functions that pass a single string ."""

  def __init__(self):
    CustomHandler.__init__(self)

  def WriteImmediateCmdComputeSize(self, func, file):
    """Overrriden from TypeHandler."""
    file.Write("  static uint32_t ComputeSize(uint32_t data_size) {\n")
    file.Write("    return static_cast<uint32_t>(\n")
    file.Write("        sizeof(ValueType) + data_size);  // NOLINT\n")
    file.Write("  }\n")

  def WriteImmediateCmdSetHeader(self, func, file):
    """Overrriden from TypeHandler."""
    code = """
  void SetHeader(uint32_t data_size) {
    header.SetCmdBySize<ValueType>(data_size);
  }
"""
    file.Write(code)

  def WriteImmediateCmdInit(self, func, file):
    """Overrriden from TypeHandler."""
    last_arg = func.GetLastOriginalArg()
    args = func.GetCmdArgs()
    set_code = []
    for arg in args:
      set_code.append("    %s = _%s;" % (arg.name, arg.name))
    code = """
  void Init(%(typed_args)s, uint32_t _data_size) {
    SetHeader(_data_size);
%(set_code)s
    memcpy(ImmediateDataAddress(this), _%(last_arg)s, _data_size);
  }

"""
    file.Write(code % {
          "typed_args": func.MakeTypedArgString("_"),
          "set_code": "\n".join(set_code),
          "last_arg": last_arg.name
        })

  def WriteImmediateCmdSet(self, func, file):
    """Overrriden from TypeHandler."""
    last_arg = func.GetLastOriginalArg()
    file.Write("  void* Set(void* cmd%s, uint32_t _data_size) {\n" %
               func.MakeTypedCmdArgString("_", True))
    file.Write("    static_cast<ValueType*>(cmd)->Init(%s, _data_size);\n" %
               func.MakeCmdArgString("_"))
    file.Write("    return NextImmediateCmdAddress<ValueType>("
               "cmd, _data_size);\n")
    file.Write("  }\n")
    file.Write("\n")

  def WriteImmediateCmdHelper(self, func, file):
    """Overrriden from TypeHandler."""
    code = """  void %(name)s(%(typed_args)s) {
    const uint32_t data_size = strlen(name);
    gles2::cmds::%(name)s* c =
        GetImmediateCmdSpace<gles2::cmds::%(name)s>(data_size);
    if (c) {
      c->Init(%(args)s, data_size);
    }
  }

"""
    file.Write(code % {
          "name": func.name,
          "typed_args": func.MakeTypedOriginalArgString(""),
          "args": func.MakeOriginalArgString(""),
        })


  def WriteImmediateFormatTest(self, func, file):
    """Overrriden from TypeHandler."""
    init_code = []
    check_code = []
    all_but_last_arg = func.GetCmdArgs()[:-1]
    for value, arg in enumerate(all_but_last_arg):
      init_code.append("      static_cast<%s>(%d)," % (arg.type, value + 11))
    for value, arg in enumerate(all_but_last_arg):
      check_code.append("  EXPECT_EQ(static_cast<%s>(%d), cmd.%s);" %
                        (arg.type, value + 11, arg.name))
    code = """
TEST_F(GLES2FormatTest, %(func_name)s) {
  cmds::%(func_name)s& cmd = *GetBufferAs<cmds::%(func_name)s>();
  static const char* const test_str = \"test string\";
  void* next_cmd = cmd.Set(
      &cmd,
%(init_code)s
      test_str,
      strlen(test_str));
  EXPECT_EQ(static_cast<uint32_t>(cmds::%(func_name)s::kCmdId),
            cmd.header.command);
  EXPECT_EQ(sizeof(cmd) +
            RoundSizeToMultipleOfEntries(strlen(test_str)),
            cmd.header.size * 4u);
  EXPECT_EQ(static_cast<char*>(next_cmd),
            reinterpret_cast<char*>(&cmd) + sizeof(cmd) +
                RoundSizeToMultipleOfEntries(strlen(test_str)));
%(check_code)s
  EXPECT_EQ(static_cast<uint32_t>(strlen(test_str)), cmd.data_size);
  EXPECT_EQ(0, memcmp(test_str, ImmediateDataAddress(&cmd), strlen(test_str)));
  CheckBytesWritten(
      next_cmd,
      sizeof(cmd) + RoundSizeToMultipleOfEntries(strlen(test_str)),
      sizeof(cmd) + strlen(test_str));
}

"""
    file.Write(code % {
          'func_name': func.name,
          'init_code': "\n".join(init_code),
          'check_code': "\n".join(check_code),
        })


class GLcharNHandler(CustomHandler):
  """Handler for functions that pass a single string with an optional len."""

  def __init__(self):
    CustomHandler.__init__(self)

  def InitFunction(self, func):
    """Overrriden from TypeHandler."""
    func.cmd_args = []
    func.AddCmdArg(Argument('bucket_id', 'GLuint'))

  def NeedsDataTransferFunction(self, func):
    """Overriden from TypeHandler."""
    return False

  def AddBucketFunction(self, generator, func):
    """Overrriden from TypeHandler."""
    pass

  def WriteServiceImplementation(self, func, file):
    """Overrriden from TypeHandler."""
    self.WriteServiceHandlerFunctionHeader(func, file)
    file.Write("""
  GLuint bucket_id = static_cast<GLuint>(c.%(bucket_id)s);
  Bucket* bucket = GetBucket(bucket_id);
  if (!bucket || bucket->size() == 0) {
    return error::kInvalidArguments;
  }
  std::string str;
  if (!bucket->GetAsString(&str)) {
    return error::kInvalidArguments;
  }
  %(gl_func_name)s(0, str.c_str());
  return error::kNoError;
}

""" % {
    'name': func.name,
    'gl_func_name': func.GetGLFunctionName(),
    'bucket_id': func.cmd_args[0].name,
  })


class IsHandler(TypeHandler):
  """Handler for glIs____ type and glGetError functions."""

  def __init__(self):
    TypeHandler.__init__(self)

  def InitFunction(self, func):
    """Overrriden from TypeHandler."""
    func.AddCmdArg(Argument("result_shm_id", 'uint32_t'))
    func.AddCmdArg(Argument("result_shm_offset", 'uint32_t'))
    if func.GetInfo('result') == None:
      func.AddInfo('result', ['uint32_t'])

  def WriteServiceUnitTest(self, func, file, *extras):
    """Overrriden from TypeHandler."""
    valid_test = """
TEST_P(%(test_name)s, %(name)sValidArgs) {
  EXPECT_CALL(*gl_, %(gl_func_name)s(%(gl_args)s));
  SpecializedSetup<cmds::%(name)s, 0>(true);
  cmds::%(name)s cmd;
  cmd.Init(%(args)s%(comma)sshared_memory_id_, shared_memory_offset_);
  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
  EXPECT_EQ(GL_NO_ERROR, GetGLError());
}
"""
    comma = ""
    if len(func.GetOriginalArgs()):
      comma =", "
    self.WriteValidUnitTest(func, file, valid_test, {
          'comma': comma,
        }, *extras)

    invalid_test = """
TEST_P(%(test_name)s, %(name)sInvalidArgs%(arg_index)d_%(value_index)d) {
  EXPECT_CALL(*gl_, %(gl_func_name)s(%(gl_args)s)).Times(0);
  SpecializedSetup<cmds::%(name)s, 0>(false);
  cmds::%(name)s cmd;
  cmd.Init(%(args)s%(comma)sshared_memory_id_, shared_memory_offset_);
  EXPECT_EQ(error::%(parse_result)s, ExecuteCmd(cmd));%(gl_error_test)s
}
"""
    self.WriteInvalidUnitTest(func, file, invalid_test, {
          'comma': comma,
        }, *extras)

    invalid_test = """
TEST_P(%(test_name)s, %(name)sInvalidArgsBadSharedMemoryId) {
  EXPECT_CALL(*gl_, %(gl_func_name)s(%(gl_args)s)).Times(0);
  SpecializedSetup<cmds::%(name)s, 0>(false);
  cmds::%(name)s cmd;
  cmd.Init(%(args)s%(comma)skInvalidSharedMemoryId, shared_memory_offset_);
  EXPECT_EQ(error::kOutOfBounds, ExecuteCmd(cmd));
  cmd.Init(%(args)s%(comma)sshared_memory_id_, kInvalidSharedMemoryOffset);
  EXPECT_EQ(error::kOutOfBounds, ExecuteCmd(cmd));
}
"""
    self.WriteValidUnitTest(func, file, invalid_test, {
          'comma': comma,
        }, *extras)

  def WriteServiceImplementation(self, func, file):
    """Overrriden from TypeHandler."""
    self.WriteServiceHandlerFunctionHeader(func, file)
    args = func.GetOriginalArgs()
    for arg in args:
      arg.WriteGetCode(file)

    code = """  typedef cmds::%(func_name)s::Result Result;
  Result* result_dst = GetSharedMemoryAs<Result*>(
      c.result_shm_id, c.result_shm_offset, sizeof(*result_dst));
  if (!result_dst) {
    return error::kOutOfBounds;
  }
"""
    file.Write(code % {'func_name': func.name})
    func.WriteHandlerValidation(file)
    file.Write("  *result_dst = %s(%s);\n" %
               (func.GetGLFunctionName(), func.MakeOriginalArgString("")))
    file.Write("  return error::kNoError;\n")
    file.Write("}\n")
    file.Write("\n")

  def WriteGLES2Implementation(self, func, file):
    """Overrriden from TypeHandler."""
    impl_func = func.GetInfo('impl_func')
    if impl_func == None or impl_func == True:
      error_value = func.GetInfo("error_value") or "GL_FALSE"
      file.Write("%s GLES2Implementation::%s(%s) {\n" %
                 (func.return_type, func.original_name,
                  func.MakeTypedOriginalArgString("")))
      file.Write("  GPU_CLIENT_SINGLE_THREAD_CHECK();\n")
      self.WriteTraceEvent(func, file)
      func.WriteDestinationInitalizationValidation(file)
      self.WriteClientGLCallLog(func, file)
      file.Write("  typedef cmds::%s::Result Result;\n" % func.name)
      file.Write("  Result* result = GetResultAs<Result*>();\n")
      file.Write("  if (!result) {\n")
      file.Write("    return %s;\n" % error_value)
      file.Write("  }\n")
      file.Write("  *result = 0;\n")
      arg_string = func.MakeOriginalArgString("")
      comma = ""
      if len(arg_string) > 0:
        comma = ", "
      file.Write(
          "  helper_->%s(%s%sGetResultShmId(), GetResultShmOffset());\n" %
                 (func.name, arg_string, comma))
      file.Write("  WaitForCmd();\n")
      file.Write("  %s result_value = *result" % func.return_type)
      if func.return_type == "GLboolean":
        file.Write(" != 0")
      file.Write(';\n  GPU_CLIENT_LOG("returned " << result_value);\n')
      file.Write("  CheckGLError();\n")
      file.Write("  return result_value;\n")
      file.Write("}\n")
      file.Write("\n")

  def WriteGLES2ImplementationUnitTest(self, func, file):
    """Overrriden from TypeHandler."""
    client_test = func.GetInfo('client_test')
    if client_test == None or client_test == True:
      code = """
TEST_F(GLES2ImplementationTest, %(name)s) {
  struct Cmds {
    cmds::%(name)s cmd;
  };

  Cmds expected;
  ExpectedMemoryInfo result1 =
      GetExpectedResultMemory(sizeof(cmds::%(name)s::Result));
  expected.cmd.Init(1, result1.id, result1.offset);

  EXPECT_CALL(*command_buffer(), OnFlush())
      .WillOnce(SetMemory(result1.ptr, uint32_t(1)))
      .RetiresOnSaturation();

  GLboolean result = gl_->%(name)s(1);
  EXPECT_EQ(0, memcmp(&expected, commands_, sizeof(expected)));
  EXPECT_TRUE(result);
}
"""
      file.Write(code % {
            'name': func.name,
          })


class STRnHandler(TypeHandler):
  """Handler for GetProgramInfoLog, GetShaderInfoLog, GetShaderSource, and
  GetTranslatedShaderSourceANGLE."""

  def __init__(self):
    TypeHandler.__init__(self)

  def InitFunction(self, func):
    """Overrriden from TypeHandler."""
    # remove all but the first cmd args.
    cmd_args = func.GetCmdArgs()
    func.ClearCmdArgs()
    func.AddCmdArg(cmd_args[0])
    # add on a bucket id.
    func.AddCmdArg(Argument('bucket_id', 'uint32_t'))

  def WriteGLES2Implementation(self, func, file):
    """Overrriden from TypeHandler."""
    code_1 = """%(return_type)s GLES2Implementation::%(func_name)s(%(args)s) {
  GPU_CLIENT_SINGLE_THREAD_CHECK();
"""
    code_2 = """  GPU_CLIENT_LOG("[" << GetLogPrefix()
      << "] gl%(func_name)s" << "("
      << %(arg0)s << ", "
      << %(arg1)s << ", "
      << static_cast<void*>(%(arg2)s) << ", "
      << static_cast<void*>(%(arg3)s) << ")");
  helper_->SetBucketSize(kResultBucketId, 0);
  helper_->%(func_name)s(%(id_name)s, kResultBucketId);
  std::string str;
  GLsizei max_size = 0;
  if (GetBucketAsString(kResultBucketId, &str)) {
    if (bufsize > 0) {
      max_size =
          std::min(static_cast<size_t>(%(bufsize_name)s) - 1, str.size());
      memcpy(%(dest_name)s, str.c_str(), max_size);
      %(dest_name)s[max_size] = '\\0';
      GPU_CLIENT_LOG("------\\n" << %(dest_name)s << "\\n------");
    }
  }
  if (%(length_name)s != NULL) {
    *%(length_name)s = max_size;
  }
  CheckGLError();
}
"""
    args = func.GetOriginalArgs()
    str_args = {
      'return_type': func.return_type,
      'func_name': func.original_name,
      'args': func.MakeTypedOriginalArgString(""),
      'id_name': args[0].name,
      'bufsize_name': args[1].name,
      'length_name': args[2].name,
      'dest_name': args[3].name,
      'arg0': args[0].name,
      'arg1': args[1].name,
      'arg2': args[2].name,
      'arg3': args[3].name,
    }
    file.Write(code_1 % str_args)
    func.WriteDestinationInitalizationValidation(file)
    file.Write(code_2 % str_args)

  def WriteServiceUnitTest(self, func, file, *extras):
    """Overrriden from TypeHandler."""
    valid_test = """
TEST_P(%(test_name)s, %(name)sValidArgs) {
  const char* kInfo = "hello";
  const uint32_t kBucketId = 123;
  SpecializedSetup<cmds::%(name)s, 0>(true);
%(expect_len_code)s
  EXPECT_CALL(*gl_, %(gl_func_name)s(%(gl_args)s))
      .WillOnce(DoAll(SetArgumentPointee<2>(strlen(kInfo)),
                      SetArrayArgument<3>(kInfo, kInfo + strlen(kInfo) + 1)));
  cmds::%(name)s cmd;
  cmd.Init(%(args)s);
  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
  CommonDecoder::Bucket* bucket = decoder_->GetBucket(kBucketId);
  ASSERT_TRUE(bucket != NULL);
  EXPECT_EQ(strlen(kInfo) + 1, bucket->size());
  EXPECT_EQ(0, memcmp(bucket->GetData(0, bucket->size()), kInfo,
                      bucket->size()));
  EXPECT_EQ(GL_NO_ERROR, GetGLError());
}
"""
    args = func.GetOriginalArgs()
    id_name = args[0].GetValidGLArg(func)
    get_len_func = func.GetInfo('get_len_func')
    get_len_enum = func.GetInfo('get_len_enum')
    sub = {
        'id_name': id_name,
        'get_len_func': get_len_func,
        'get_len_enum': get_len_enum,
        'gl_args': '%s, strlen(kInfo) + 1, _, _' %
             args[0].GetValidGLArg(func),
        'args': '%s, kBucketId' % args[0].GetValidArg(func),
        'expect_len_code': '',
    }
    if get_len_func and get_len_func[0:2] == 'gl':
      sub['expect_len_code'] = (
        "  EXPECT_CALL(*gl_, %s(%s, %s, _))\n"
        "      .WillOnce(SetArgumentPointee<2>(strlen(kInfo) + 1));") % (
            get_len_func[2:], id_name, get_len_enum)
    self.WriteValidUnitTest(func, file, valid_test, sub, *extras)

    invalid_test = """
TEST_P(%(test_name)s, %(name)sInvalidArgs) {
  const uint32_t kBucketId = 123;
  EXPECT_CALL(*gl_, %(gl_func_name)s(_, _, _, _))
      .Times(0);
  cmds::%(name)s cmd;
  cmd.Init(kInvalidClientId, kBucketId);
  EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
  EXPECT_EQ(GL_INVALID_VALUE, GetGLError());
}
"""
    self.WriteValidUnitTest(func, file, invalid_test, *extras)

  def WriteServiceImplementation(self, func, file):
    """Overrriden from TypeHandler."""
    pass

class NamedType(object):
  """A class that represents a type of an argument in a client function.

  A type of an argument that is to be passed through in the command buffer
  command. Currently used only for the arguments that are specificly named in
  the 'cmd_buffer_functions.txt' file, mostly enums.
  """

  def __init__(self, info):
    assert not 'is_complete' in info or info['is_complete'] == True
    self.info = info
    self.valid = info['valid']
    if 'invalid' in info:
      self.invalid = info['invalid']
    else:
      self.invalid = []

  def GetType(self):
    return self.info['type']

  def GetInvalidValues(self):
    return self.invalid

  def GetValidValues(self):
    return self.valid

  def IsConstant(self):
    if not 'is_complete' in self.info:
      return False

    return len(self.GetValidValues()) == 1

  def GetConstantValue(self):
    return self.GetValidValues()[0]

class Argument(object):
  """A class that represents a function argument."""

  cmd_type_map_ = {
    'GLenum': 'uint32_t',
    'GLint': 'int32_t',
    'GLintptr': 'int32_t',
    'GLsizei': 'int32_t',
    'GLsizeiptr': 'int32_t',
    'GLfloat': 'float',
    'GLclampf': 'float',
  }
  need_validation_ = ['GLsizei*', 'GLboolean*', 'GLenum*', 'GLint*']

  def __init__(self, name, type):
    self.name = name
    self.optional = type.endswith("Optional*")
    if self.optional:
      type = type[:-9] + "*"
    self.type = type

    if type in self.cmd_type_map_:
      self.cmd_type = self.cmd_type_map_[type]
    else:
      self.cmd_type = 'uint32_t'

  def IsPointer(self):
    """Returns true if argument is a pointer."""
    return False

  def IsConstant(self):
    """Returns true if the argument has only one valid value."""
    return False

  def AddCmdArgs(self, args):
    """Adds command arguments for this argument to the given list."""
    if not self.IsConstant():
      return args.append(self)

  def AddInitArgs(self, args):
    """Adds init arguments for this argument to the given list."""
    if not self.IsConstant():
      return args.append(self)

  def GetValidArg(self, func):
    """Gets a valid value for this argument."""
    valid_arg = func.GetValidArg(self)
    if valid_arg != None:
      return valid_arg

    index = func.GetOriginalArgs().index(self)
    return str(index + 1)

  def GetValidClientSideArg(self, func):
    """Gets a valid value for this argument."""
    valid_arg = func.GetValidArg(self)
    if valid_arg != None:
      return valid_arg

    index = func.GetOriginalArgs().index(self)
    return str(index + 1)

  def GetValidClientSideCmdArg(self, func):
    """Gets a valid value for this argument."""
    valid_arg = func.GetValidArg(self)
    if valid_arg != None:
      return valid_arg
    try:
      index = func.GetOriginalArgs().index(self)
      return str(index + 1)
    except ValueError:
      pass
    index = func.GetCmdArgs().index(self)
    return str(index + 1)

  def GetValidGLArg(self, func):
    """Gets a valid GL value for this argument."""
    return self.GetValidArg(func)

  def GetValidNonCachedClientSideArg(self, func):
    """Returns a valid value for this argument in a GL call.
    Using the value will produce a command buffer service invocation.
    Returns None if there is no such value."""
    return '123'

  def GetValidNonCachedClientSideCmdArg(self, func):
    """Returns a valid value for this argument in a command buffer command.
    Calling the GL function with the value returned by
    GetValidNonCachedClientSideArg will result in a command buffer command
    that contains the value returned by this function. """
    return '123'

  def GetNumInvalidValues(self, func):
    """returns the number of invalid values to be tested."""
    return 0

  def GetInvalidArg(self, index):
    """returns an invalid value and expected parse result by index."""
    return ("---ERROR0---", "---ERROR2---", None)

  def GetLogArg(self):
    """Get argument appropriate for LOG macro."""
    if self.type == 'GLboolean':
      return 'GLES2Util::GetStringBool(%s)' % self.name
    if self.type == 'GLenum':
      return 'GLES2Util::GetStringEnum(%s)' % self.name
    return self.name

  def WriteGetCode(self, file):
    """Writes the code to get an argument from a command structure."""
    file.Write("  %s %s = static_cast<%s>(c.%s);\n" %
               (self.type, self.name, self.type, self.name))

  def WriteValidationCode(self, file, func):
    """Writes the validation code for an argument."""
    pass

  def WriteClientSideValidationCode(self, file, func):
    """Writes the validation code for an argument."""
    pass

  def WriteDestinationInitalizationValidation(self, file, func):
    """Writes the client side destintion initialization validation."""
    pass

  def WriteDestinationInitalizationValidatationIfNeeded(self, file, func):
    """Writes the client side destintion initialization validation if needed."""
    parts = self.type.split(" ")
    if len(parts) > 1:
      return
    if parts[0] in self.need_validation_:
      file.Write(
          "  GPU_CLIENT_VALIDATE_DESTINATION_%sINITALIZATION(%s, %s);\n" %
          ("OPTIONAL_" if self.optional else "", self.type[:-1], self.name))


  def WriteGetAddress(self, file):
    """Writes the code to get the address this argument refers to."""
    pass

  def GetImmediateVersion(self):
    """Gets the immediate version of this argument."""
    return self

  def GetBucketVersion(self):
    """Gets the bucket version of this argument."""
    return self


class BoolArgument(Argument):
  """class for GLboolean"""

  def __init__(self, name, type):
    Argument.__init__(self, name, 'GLboolean')

  def GetValidArg(self, func):
    """Gets a valid value for this argument."""
    return 'true'

  def GetValidClientSideArg(self, func):
    """Gets a valid value for this argument."""
    return 'true'

  def GetValidClientSideCmdArg(self, func):
    """Gets a valid value for this argument."""
    return 'true'

  def GetValidGLArg(self, func):
    """Gets a valid GL value for this argument."""
    return 'true'


class UniformLocationArgument(Argument):
  """class for uniform locations."""

  def __init__(self, name):
    Argument.__init__(self, name, "GLint")

  def WriteGetCode(self, file):
    """Writes the code to get an argument from a command structure."""
    code = """  %s %s = static_cast<%s>(c.%s);
"""
    file.Write(code % (self.type, self.name, self.type, self.name))

class DataSizeArgument(Argument):
  """class for data_size which Bucket commands do not need."""

  def __init__(self, name):
    Argument.__init__(self, name, "uint32_t")

  def GetBucketVersion(self):
    return None


class SizeArgument(Argument):
  """class for GLsizei and GLsizeiptr."""

  def __init__(self, name, type):
    Argument.__init__(self, name, type)

  def GetNumInvalidValues(self, func):
    """overridden from Argument."""
    if func.IsImmediate():
      return 0
    return 1

  def GetInvalidArg(self, index):
    """overridden from Argument."""
    return ("-1", "kNoError", "GL_INVALID_VALUE")

  def WriteValidationCode(self, file, func):
    """overridden from Argument."""
    file.Write("  if (%s < 0) {\n" % self.name)
    file.Write(
        "    LOCAL_SET_GL_ERROR(GL_INVALID_VALUE, \"gl%s\", \"%s < 0\");\n" %
        (func.original_name, self.name))
    file.Write("    return error::kNoError;\n")
    file.Write("  }\n")

  def WriteClientSideValidationCode(self, file, func):
    """overridden from Argument."""
    file.Write("  if (%s < 0) {\n" % self.name)
    file.Write(
        "    SetGLError(GL_INVALID_VALUE, \"gl%s\", \"%s < 0\");\n" %
        (func.original_name, self.name))
    file.Write("    return;\n")
    file.Write("  }\n")


class SizeNotNegativeArgument(SizeArgument):
  """class for GLsizeiNotNegative. It's NEVER allowed to be negative"""

  def __init__(self, name, type, gl_type):
    SizeArgument.__init__(self, name, gl_type)

  def GetInvalidArg(self, index):
    """overridden from SizeArgument."""
    return ("-1", "kOutOfBounds", "GL_NO_ERROR")

  def WriteValidationCode(self, file, func):
    """overridden from SizeArgument."""
    pass


class EnumBaseArgument(Argument):
  """Base class for EnumArgument, IntArgument and ValidatedBoolArgument"""

  def __init__(self, name, gl_type, type, gl_error):
    Argument.__init__(self, name, gl_type)

    self.local_type = type
    self.gl_error = gl_error
    name = type[len(gl_type):]
    self.type_name = name
    self.named_type = NamedType(_NAMED_TYPE_INFO[name])

  def IsConstant(self):
    return self.named_type.IsConstant()

  def GetConstantValue(self):
    return self.named_type.GetConstantValue()

  def WriteValidationCode(self, file, func):
    if self.named_type.IsConstant():
      return
    file.Write("  if (!validators_->%s.IsValid(%s)) {\n" %
               (ToUnderscore(self.type_name), self.name))
    if self.gl_error == "GL_INVALID_ENUM":
      file.Write(
          "    LOCAL_SET_GL_ERROR_INVALID_ENUM(\"gl%s\", %s, \"%s\");\n" %
          (func.original_name, self.name, self.name))
    else:
      file.Write(
          "    LOCAL_SET_GL_ERROR(%s, \"gl%s\", \"%s %s\");\n" %
          (self.gl_error, func.original_name, self.name, self.gl_error))
    file.Write("    return error::kNoError;\n")
    file.Write("  }\n")

  def WriteClientSideValidationCode(self, file, func):
    if not self.named_type.IsConstant():
      return
    file.Write("  if (%s != %s) {" % (self.name,
                                      self.GetConstantValue()))
    file.Write(
      "    SetGLError(%s, \"gl%s\", \"%s %s\");\n" %
      (self.gl_error, func.original_name, self.name, self.gl_error))
    if func.return_type == "void":
      file.Write("    return;\n")
    else:
      file.Write("    return %s;\n" % func.GetErrorReturnString())
    file.Write("  }\n")

  def GetValidArg(self, func):
    valid_arg = func.GetValidArg(self)
    if valid_arg != None:
      return valid_arg
    valid = self.named_type.GetValidValues()
    if valid:
      num_valid = len(valid)
      return valid[0]

    index = func.GetOriginalArgs().index(self)
    return str(index + 1)

  def GetValidClientSideArg(self, func):
    """Gets a valid value for this argument."""
    return self.GetValidArg(func)

  def GetValidClientSideCmdArg(self, func):
    """Gets a valid value for this argument."""
    valid_arg = func.GetValidArg(self)
    if valid_arg != None:
      return valid_arg

    valid = self.named_type.GetValidValues()
    if valid:
      num_valid = len(valid)
      return valid[0]

    try:
      index = func.GetOriginalArgs().index(self)
      return str(index + 1)
    except ValueError:
      pass
    index = func.GetCmdArgs().index(self)
    return str(index + 1)

  def GetValidGLArg(self, func):
    """Gets a valid value for this argument."""
    return self.GetValidArg(func)

  def GetNumInvalidValues(self, func):
    """returns the number of invalid values to be tested."""
    return len(self.named_type.GetInvalidValues())

  def GetInvalidArg(self, index):
    """returns an invalid value by index."""
    invalid = self.named_type.GetInvalidValues()
    if invalid:
      num_invalid = len(invalid)
      if index >= num_invalid:
        index = num_invalid - 1
      return (invalid[index], "kNoError", self.gl_error)
    return ("---ERROR1---", "kNoError", self.gl_error)


class EnumArgument(EnumBaseArgument):
  """A class that represents a GLenum argument"""

  def __init__(self, name, type):
    EnumBaseArgument.__init__(self, name, "GLenum", type, "GL_INVALID_ENUM")

  def GetLogArg(self):
    """Overridden from Argument."""
    return ("GLES2Util::GetString%s(%s)" %
            (self.type_name, self.name))


class IntArgument(EnumBaseArgument):
  """A class for a GLint argument that can only except specific values.

  For example glTexImage2D takes a GLint for its internalformat
  argument instead of a GLenum.
  """

  def __init__(self, name, type):
    EnumBaseArgument.__init__(self, name, "GLint", type, "GL_INVALID_VALUE")


class ValidatedBoolArgument(EnumBaseArgument):
  """A class for a GLboolean argument that can only except specific values.

  For example glUniformMatrix takes a GLboolean for it's transpose but it
  must be false.
  """

  def __init__(self, name, type):
    EnumBaseArgument.__init__(self, name, "GLboolean", type, "GL_INVALID_VALUE")

  def GetLogArg(self):
    """Overridden from Argument."""
    return 'GLES2Util::GetStringBool(%s)' % self.name


class ImmediatePointerArgument(Argument):
  """A class that represents an immediate argument to a function.

  An immediate argument is one where the data follows the command.
  """

  def __init__(self, name, type):
    Argument.__init__(self, name, type)

  def IsPointer(self):
    return True

  def GetPointedType(self):
    match = re.match('(const\s+)?(?P<element_type>[\w]+)\s*\*', self.type)
    assert match
    return match.groupdict()['element_type']

  def AddCmdArgs(self, args):
    """Overridden from Argument."""
    pass

  def WriteGetCode(self, file):
    """Overridden from Argument."""
    file.Write(
      "  %s %s = GetImmediateDataAs<%s>(\n" %
      (self.type, self.name, self.type))
    file.Write("      c, data_size, immediate_data_size);\n")

  def WriteValidationCode(self, file, func):
    """Overridden from Argument."""
    file.Write("  if (%s == NULL) {\n" % self.name)
    file.Write("    return error::kOutOfBounds;\n")
    file.Write("  }\n")

  def GetImmediateVersion(self):
    """Overridden from Argument."""
    return None

  def WriteDestinationInitalizationValidation(self, file, func):
    """Overridden from Argument."""
    self.WriteDestinationInitalizationValidatationIfNeeded(file, func)

  def GetLogArg(self):
    """Overridden from Argument."""
    return "static_cast<const void*>(%s)" % self.name


class BucketPointerArgument(Argument):
  """A class that represents an bucket argument to a function."""

  def __init__(self, name, type):
    Argument.__init__(self, name, type)

  def AddCmdArgs(self, args):
    """Overridden from Argument."""
    pass

  def WriteGetCode(self, file):
    """Overridden from Argument."""
    file.Write(
      "  %s %s = bucket->GetData(0, data_size);\n" %
      (self.type, self.name))

  def WriteValidationCode(self, file, func):
    """Overridden from Argument."""
    pass

  def GetImmediateVersion(self):
    """Overridden from Argument."""
    return None

  def WriteDestinationInitalizationValidation(self, file, func):
    """Overridden from Argument."""
    self.WriteDestinationInitalizationValidatationIfNeeded(file, func)

  def GetLogArg(self):
    """Overridden from Argument."""
    return "static_cast<const void*>(%s)" % self.name


class PointerArgument(Argument):
  """A class that represents a pointer argument to a function."""

  def __init__(self, name, type):
    Argument.__init__(self, name, type)

  def IsPointer(self):
    """Returns true if argument is a pointer."""
    return True

  def GetPointedType(self):
    match = re.match('(const\s+)?(?P<element_type>[\w]+)\s*\*', self.type)
    assert match
    return match.groupdict()['element_type']

  def GetValidArg(self, func):
    """Overridden from Argument."""
    return "shared_memory_id_, shared_memory_offset_"

  def GetValidGLArg(self, func):
    """Overridden from Argument."""
    return "reinterpret_cast<%s>(shared_memory_address_)" % self.type

  def GetNumInvalidValues(self, func):
    """Overridden from Argument."""
    return 2

  def GetInvalidArg(self, index):
    """Overridden from Argument."""
    if index == 0:
      return ("kInvalidSharedMemoryId, 0", "kOutOfBounds", None)
    else:
      return ("shared_memory_id_, kInvalidSharedMemoryOffset",
              "kOutOfBounds", None)

  def GetLogArg(self):
    """Overridden from Argument."""
    return "static_cast<const void*>(%s)" % self.name

  def AddCmdArgs(self, args):
    """Overridden from Argument."""
    args.append(Argument("%s_shm_id" % self.name, 'uint32_t'))
    args.append(Argument("%s_shm_offset" % self.name, 'uint32_t'))

  def WriteGetCode(self, file):
    """Overridden from Argument."""
    file.Write(
        "  %s %s = GetSharedMemoryAs<%s>(\n" %
        (self.type, self.name, self.type))
    file.Write(
        "      c.%s_shm_id, c.%s_shm_offset, data_size);\n" %
        (self.name, self.name))

  def WriteGetAddress(self, file):
    """Overridden from Argument."""
    file.Write(
        "  %s %s = GetSharedMemoryAs<%s>(\n" %
        (self.type, self.name, self.type))
    file.Write(
        "      %s_shm_id, %s_shm_offset, %s_size);\n" %
        (self.name, self.name, self.name))

  def WriteValidationCode(self, file, func):
    """Overridden from Argument."""
    file.Write("  if (%s == NULL) {\n" % self.name)
    file.Write("    return error::kOutOfBounds;\n")
    file.Write("  }\n")

  def GetImmediateVersion(self):
    """Overridden from Argument."""
    return ImmediatePointerArgument(self.name, self.type)

  def GetBucketVersion(self):
    """Overridden from Argument."""
    if self.type == "const char*":
      return InputStringBucketArgument(self.name, self.type)
    return BucketPointerArgument(self.name, self.type)

  def WriteDestinationInitalizationValidation(self, file, func):
    """Overridden from Argument."""
    self.WriteDestinationInitalizationValidatationIfNeeded(file, func)


class InputStringBucketArgument(Argument):
  """An string input argument where the string is passed in a bucket."""

  def __init__(self, name, type):
    Argument.__init__(self, name + "_bucket_id", "uint32_t")

  def WriteGetCode(self, file):
    """Overridden from Argument."""
    code = """
  Bucket* %(name)s_bucket = GetBucket(c.%(name)s);
  if (!%(name)s_bucket) {
    return error::kInvalidArguments;
  }
  std::string %(name)s_str;
  if (!%(name)s_bucket->GetAsString(&%(name)s_str)) {
    return error::kInvalidArguments;
  }
  const char* %(name)s = %(name)s_str.c_str();
"""
    file.Write(code % {
        'name': self.name,
      })

  def GetValidArg(self, func):
    return "kNameBucketId"

  def GetValidGLArg(self, func):
    return "_"


class ResourceIdArgument(Argument):
  """A class that represents a resource id argument to a function."""

  def __init__(self, name, type):
    match = re.match("(GLid\w+)", type)
    self.resource_type = match.group(1)[4:]
    type = type.replace(match.group(1), "GLuint")
    Argument.__init__(self, name, type)

  def WriteGetCode(self, file):
    """Overridden from Argument."""
    file.Write("  %s %s = c.%s;\n" % (self.type, self.name, self.name))

  def GetValidArg(self, func):
    return "client_%s_id_" % self.resource_type.lower()

  def GetValidGLArg(self, func):
    return "kService%sId" % self.resource_type


class ResourceIdBindArgument(Argument):
  """Represents a resource id argument to a bind function."""

  def __init__(self, name, type):
    match = re.match("(GLidBind\w+)", type)
    self.resource_type = match.group(1)[8:]
    type = type.replace(match.group(1), "GLuint")
    Argument.__init__(self, name, type)

  def WriteGetCode(self, file):
    """Overridden from Argument."""
    code = """  %(type)s %(name)s = c.%(name)s;
"""
    file.Write(code % {'type': self.type, 'name': self.name})

  def GetValidArg(self, func):
    return "client_%s_id_" % self.resource_type.lower()

  def GetValidGLArg(self, func):
    return "kService%sId" % self.resource_type


class ResourceIdZeroArgument(Argument):
  """Represents a resource id argument to a function that can be zero."""

  def __init__(self, name, type):
    match = re.match("(GLidZero\w+)", type)
    self.resource_type = match.group(1)[8:]
    type = type.replace(match.group(1), "GLuint")
    Argument.__init__(self, name, type)

  def WriteGetCode(self, file):
    """Overridden from Argument."""
    file.Write("  %s %s = c.%s;\n" % (self.type, self.name, self.name))

  def GetValidArg(self, func):
    return "client_%s_id_" % self.resource_type.lower()

  def GetValidGLArg(self, func):
    return "kService%sId" % self.resource_type

  def GetNumInvalidValues(self, func):
    """returns the number of invalid values to be tested."""
    return 1

  def GetInvalidArg(self, index):
    """returns an invalid value by index."""
    return ("kInvalidClientId", "kNoError", "GL_INVALID_VALUE")


class Function(object):
  """A class that represents a function."""

  type_handlers = {
    '': TypeHandler(),
    'Bind': BindHandler(),
    'Create': CreateHandler(),
    'Custom': CustomHandler(),
    'Data': DataHandler(),
    'Delete': DeleteHandler(),
    'DELn': DELnHandler(),
    'GENn': GENnHandler(),
    'GETn': GETnHandler(),
    'GLchar': GLcharHandler(),
    'GLcharN': GLcharNHandler(),
    'HandWritten': HandWrittenHandler(),
    'Is': IsHandler(),
    'Manual': ManualHandler(),
    'PUT': PUTHandler(),
    'PUTn': PUTnHandler(),
    'PUTXn': PUTXnHandler(),
    'StateSet': StateSetHandler(),
    'StateSetRGBAlpha': StateSetRGBAlphaHandler(),
    'StateSetFrontBack': StateSetFrontBackHandler(),
    'StateSetFrontBackSeparate': StateSetFrontBackSeparateHandler(),
    'StateSetNamedParameter': StateSetNamedParameter(),
    'STRn': STRnHandler(),
    'Todo': TodoHandler(),
  }

  def __init__(self, name, info):
    self.name = name
    self.original_name = info['original_name']

    self.original_args = self.ParseArgs(info['original_args'])

    if 'cmd_args' in info:
      self.args_for_cmds = self.ParseArgs(info['cmd_args'])
    else:
      self.args_for_cmds = self.original_args[:]

    self.return_type = info['return_type']
    if self.return_type != 'void':
      self.return_arg = CreateArg(info['return_type'] + " result")
    else:
      self.return_arg = None

    self.num_pointer_args = sum(
      [1 for arg in self.args_for_cmds if arg.IsPointer()])
    self.info = info
    self.type_handler = self.type_handlers[info['type']]
    self.can_auto_generate = (self.num_pointer_args == 0 and
                              info['return_type'] == "void")
    self.InitFunction()

  def ParseArgs(self, arg_string):
    """Parses a function arg string."""
    args = []
    parts = arg_string.split(',')
    for arg_string in parts:
      arg = CreateArg(arg_string)
      if arg:
        args.append(arg)
    return args

  def IsType(self, type_name):
    """Returns true if function is a certain type."""
    return self.info['type'] == type_name

  def InitFunction(self):
    """Creates command args and calls the init function for the type handler.

    Creates argument lists for command buffer commands, eg. self.cmd_args and
    self.init_args.
    Calls the type function initialization.
    Override to create different kind of command buffer command argument lists.
    """
    self.cmd_args = []
    for arg in self.args_for_cmds:
      arg.AddCmdArgs(self.cmd_args)

    self.init_args = []
    for arg in self.args_for_cmds:
      arg.AddInitArgs(self.init_args)

    if self.return_arg:
      self.init_args.append(self.return_arg)

    self.type_handler.InitFunction(self)

  def IsImmediate(self):
    """Returns whether the function is immediate data function or not."""
    return False

  def GetInfo(self, name, default = None):
    """Returns a value from the function info for this function."""
    if name in self.info:
      return self.info[name]
    return default

  def GetValidArg(self, arg):
    """Gets a valid argument value for the parameter arg from the function info
    if one exists."""
    try:
      index = self.GetOriginalArgs().index(arg)
    except ValueError:
      return None

    valid_args = self.GetInfo('valid_args')
    if valid_args and str(index) in valid_args:
      return valid_args[str(index)]
    return None

  def AddInfo(self, name, value):
    """Adds an info."""
    self.info[name] = value

  def IsExtension(self):
    return self.GetInfo('extension') or self.GetInfo('extension_flag')

  def IsCoreGLFunction(self):
    return (not self.IsExtension() and
            not self.GetInfo('pepper_interface'))

  def InPepperInterface(self, interface):
    ext = self.GetInfo('pepper_interface')
    if not interface.GetName():
      return self.IsCoreGLFunction()
    return ext == interface.GetName()

  def InAnyPepperExtension(self):
    return self.IsCoreGLFunction() or self.GetInfo('pepper_interface')

  def GetErrorReturnString(self):
    if self.GetInfo("error_return"):
      return self.GetInfo("error_return")
    elif self.return_type == "GLboolean":
      return "GL_FALSE"
    elif "*" in self.return_type:
      return "NULL"
    return "0"

  def GetGLFunctionName(self):
    """Gets the function to call to execute GL for this command."""
    if self.GetInfo('decoder_func'):
      return self.GetInfo('decoder_func')
    return "gl%s" % self.original_name

  def GetGLTestFunctionName(self):
    gl_func_name = self.GetInfo('gl_test_func')
    if gl_func_name == None:
      gl_func_name = self.GetGLFunctionName()
    if gl_func_name.startswith("gl"):
      gl_func_name = gl_func_name[2:]
    else:
      gl_func_name = self.original_name
    return gl_func_name

  def GetDataTransferMethods(self):
    return self.GetInfo('data_transfer_methods',
                        ['immediate' if self.num_pointer_args == 1 else 'shm'])

  def AddCmdArg(self, arg):
    """Adds a cmd argument to this function."""
    self.cmd_args.append(arg)

  def GetCmdArgs(self):
    """Gets the command args for this function."""
    return self.cmd_args

  def ClearCmdArgs(self):
    """Clears the command args for this function."""
    self.cmd_args = []

  def GetCmdConstants(self):
    """Gets the constants for this function."""
    return [arg for arg in self.args_for_cmds if arg.IsConstant()]

  def GetInitArgs(self):
    """Gets the init args for this function."""
    return self.init_args

  def GetOriginalArgs(self):
    """Gets the original arguments to this function."""
    return self.original_args

  def GetLastOriginalArg(self):
    """Gets the last original argument to this function."""
    return self.original_args[len(self.original_args) - 1]

  def __MaybePrependComma(self, arg_string, add_comma):
    """Adds a comma if arg_string is not empty and add_comma is true."""
    comma = ""
    if add_comma and len(arg_string):
      comma = ", "
    return "%s%s" % (comma, arg_string)

  def MakeTypedOriginalArgString(self, prefix, add_comma = False):
    """Gets a list of arguments as they are in GL."""
    args = self.GetOriginalArgs()
    arg_string = ", ".join(
        ["%s %s%s" % (arg.type, prefix, arg.name) for arg in args])
    return self.__MaybePrependComma(arg_string, add_comma)

  def MakeOriginalArgString(self, prefix, add_comma = False, separator = ", "):
    """Gets the list of arguments as they are in GL."""
    args = self.GetOriginalArgs()
    arg_string = separator.join(
        ["%s%s" % (prefix, arg.name) for arg in args])
    return self.__MaybePrependComma(arg_string, add_comma)

  def MakeTypedHelperArgString(self, prefix, add_comma = False):
    """Gets a list of typed GL arguments after removing unneeded arguments."""
    args = self.GetOriginalArgs()
    arg_string = ", ".join(
        ["%s %s%s" % (
          arg.type,
          prefix,
          arg.name,
        ) for arg in args if not arg.IsConstant()])
    return self.__MaybePrependComma(arg_string, add_comma)

  def MakeHelperArgString(self, prefix, add_comma = False, separator = ", "):
    """Gets a list of GL arguments after removing unneeded arguments."""
    args = self.GetOriginalArgs()
    arg_string = separator.join(
        ["%s%s" % (prefix, arg.name)
         for arg in args if not arg.IsConstant()])
    return self.__MaybePrependComma(arg_string, add_comma)

  def MakeTypedPepperArgString(self, prefix):
    """Gets a list of arguments as they need to be for Pepper."""
    if self.GetInfo("pepper_args"):
      return self.GetInfo("pepper_args")
    else:
      return self.MakeTypedOriginalArgString(prefix, False)

  def MapCTypeToPepperIdlType(self, ctype, is_for_return_type=False):
    """Converts a C type name to the corresponding Pepper IDL type."""
    idltype = {
        'char*': '[out] str_t',
        'const GLchar* const*': '[out] cstr_t',
        'const char*': 'cstr_t',
        'const void*': 'mem_t',
        'void*': '[out] mem_t',
        'void**': '[out] mem_ptr_t',
    }.get(ctype, ctype)
    # We use "GLxxx_ptr_t" for "GLxxx*".
    matched = re.match(r'(const )?(GL\w+)\*$', ctype)
    if matched:
      idltype = matched.group(2) + '_ptr_t'
      if not matched.group(1):
        idltype = '[out] ' + idltype
    # If an in/out specifier is not specified yet, prepend [in].
    if idltype[0] != '[':
      idltype = '[in] ' + idltype
    # Strip the in/out specifier for a return type.
    if is_for_return_type:
      idltype = re.sub(r'\[\w+\] ', '', idltype)
    return idltype

  def MakeTypedPepperIdlArgStrings(self):
    """Gets a list of arguments as they need to be for Pepper IDL."""
    args = self.GetOriginalArgs()
    return ["%s %s" % (self.MapCTypeToPepperIdlType(arg.type), arg.name)
            for arg in args]

  def GetPepperName(self):
    if self.GetInfo("pepper_name"):
      return self.GetInfo("pepper_name")
    return self.name

  def MakeTypedCmdArgString(self, prefix, add_comma = False):
    """Gets a typed list of arguments as they need to be for command buffers."""
    args = self.GetCmdArgs()
    arg_string = ", ".join(
        ["%s %s%s" % (arg.type, prefix, arg.name) for arg in args])
    return self.__MaybePrependComma(arg_string, add_comma)

  def MakeCmdArgString(self, prefix, add_comma = False):
    """Gets the list of arguments as they need to be for command buffers."""
    args = self.GetCmdArgs()
    arg_string = ", ".join(
        ["%s%s" % (prefix, arg.name) for arg in args])
    return self.__MaybePrependComma(arg_string, add_comma)

  def MakeTypedInitString(self, prefix, add_comma = False):
    """Gets a typed list of arguments as they need to be for cmd Init/Set."""
    args = self.GetInitArgs()
    arg_string = ", ".join(
        ["%s %s%s" % (arg.type, prefix, arg.name) for arg in args])
    return self.__MaybePrependComma(arg_string, add_comma)

  def MakeInitString(self, prefix, add_comma = False):
    """Gets the list of arguments as they need to be for cmd Init/Set."""
    args = self.GetInitArgs()
    arg_string = ", ".join(
        ["%s%s" % (prefix, arg.name) for arg in args])
    return self.__MaybePrependComma(arg_string, add_comma)

  def MakeLogArgString(self):
    """Makes a string of the arguments for the LOG macros"""
    args = self.GetOriginalArgs()
    return ' << ", " << '.join([arg.GetLogArg() for arg in args])

  def WriteCommandDescription(self, file):
    """Writes a description of the command."""
    file.Write("//! Command that corresponds to gl%s.\n" % self.original_name)

  def WriteHandlerValidation(self, file):
    """Writes validation code for the function."""
    for arg in self.GetOriginalArgs():
      arg.WriteValidationCode(file, self)
    self.WriteValidationCode(file)

  def WriteHandlerImplementation(self, file):
    """Writes the handler implementation for this command."""
    self.type_handler.WriteHandlerImplementation(self, file)

  def WriteValidationCode(self, file):
    """Writes the validation code for a command."""
    pass

  def WriteCmdFlag(self, file):
    """Writes the cmd cmd_flags constant."""
    flags = []
    # By default trace only at the highest level 3.
    trace_level = int(self.GetInfo('trace_level', default = 3))
    if trace_level not in xrange(0, 4):
      raise KeyError("Unhandled trace_level: %d" % trace_level)

    flags.append('CMD_FLAG_SET_TRACE_LEVEL(%d)' % trace_level)

    if len(flags) > 0:
      cmd_flags = ' | '.join(flags)
    else:
      cmd_flags = 0

    file.Write("  static const uint8 cmd_flags = %s;\n" % cmd_flags)


  def WriteCmdArgFlag(self, file):
    """Writes the cmd kArgFlags constant."""
    file.Write("  static const cmd::ArgFlags kArgFlags = cmd::kFixed;\n")

  def WriteCmdComputeSize(self, file):
    """Writes the ComputeSize function for the command."""
    file.Write("  static uint32_t ComputeSize() {\n")
    file.Write(
        "    return static_cast<uint32_t>(sizeof(ValueType));  // NOLINT\n")
    file.Write("  }\n")
    file.Write("\n")

  def WriteCmdSetHeader(self, file):
    """Writes the cmd's SetHeader function."""
    file.Write("  void SetHeader() {\n")
    file.Write("    header.SetCmd<ValueType>();\n")
    file.Write("  }\n")
    file.Write("\n")

  def WriteCmdInit(self, file):
    """Writes the cmd's Init function."""
    file.Write("  void Init(%s) {\n" % self.MakeTypedCmdArgString("_"))
    file.Write("    SetHeader();\n")
    args = self.GetCmdArgs()
    for arg in args:
      file.Write("    %s = _%s;\n" % (arg.name, arg.name))
    file.Write("  }\n")
    file.Write("\n")

  def WriteCmdSet(self, file):
    """Writes the cmd's Set function."""
    copy_args = self.MakeCmdArgString("_", False)
    file.Write("  void* Set(void* cmd%s) {\n" %
               self.MakeTypedCmdArgString("_", True))
    file.Write("    static_cast<ValueType*>(cmd)->Init(%s);\n" % copy_args)
    file.Write("    return NextCmdAddress<ValueType>(cmd);\n")
    file.Write("  }\n")
    file.Write("\n")

  def WriteStruct(self, file):
    self.type_handler.WriteStruct(self, file)

  def WriteDocs(self, file):
    self.type_handler.WriteDocs(self, file)

  def WriteCmdHelper(self, file):
    """Writes the cmd's helper."""
    self.type_handler.WriteCmdHelper(self, file)

  def WriteServiceImplementation(self, file):
    """Writes the service implementation for a command."""
    self.type_handler.WriteServiceImplementation(self, file)

  def WriteServiceUnitTest(self, file, *extras):
    """Writes the service implementation for a command."""
    self.type_handler.WriteServiceUnitTest(self, file, *extras)

  def WriteGLES2CLibImplementation(self, file):
    """Writes the GLES2 C Lib Implemention."""
    self.type_handler.WriteGLES2CLibImplementation(self, file)

  def WriteGLES2InterfaceHeader(self, file):
    """Writes the GLES2 Interface declaration."""
    self.type_handler.WriteGLES2InterfaceHeader(self, file)

  def WriteGLES2InterfaceStub(self, file):
    """Writes the GLES2 Interface Stub declaration."""
    self.type_handler.WriteGLES2InterfaceStub(self, file)

  def WriteGLES2InterfaceStubImpl(self, file):
    """Writes the GLES2 Interface Stub declaration."""
    self.type_handler.WriteGLES2InterfaceStubImpl(self, file)

  def WriteGLES2ImplementationHeader(self, file):
    """Writes the GLES2 Implemention declaration."""
    self.type_handler.WriteGLES2ImplementationHeader(self, file)

  def WriteGLES2Implementation(self, file):
    """Writes the GLES2 Implemention definition."""
    self.type_handler.WriteGLES2Implementation(self, file)

  def WriteGLES2TraceImplementationHeader(self, file):
    """Writes the GLES2 Trace Implemention declaration."""
    self.type_handler.WriteGLES2TraceImplementationHeader(self, file)

  def WriteGLES2TraceImplementation(self, file):
    """Writes the GLES2 Trace Implemention definition."""
    self.type_handler.WriteGLES2TraceImplementation(self, file)

  def WriteGLES2Header(self, file):
    """Writes the GLES2 Implemention unit test."""
    self.type_handler.WriteGLES2Header(self, file)

  def WriteGLES2ImplementationUnitTest(self, file):
    """Writes the GLES2 Implemention unit test."""
    self.type_handler.WriteGLES2ImplementationUnitTest(self, file)

  def WriteDestinationInitalizationValidation(self, file):
    """Writes the client side destintion initialization validation."""
    self.type_handler.WriteDestinationInitalizationValidation(self, file)

  def WriteFormatTest(self, file):
    """Writes the cmd's format test."""
    self.type_handler.WriteFormatTest(self, file)


class PepperInterface(object):
  """A class that represents a function."""

  def __init__(self, info):
    self.name = info["name"]
    self.dev = info["dev"]

  def GetName(self):
    return self.name

  def GetInterfaceName(self):
    upperint = ""
    dev = ""
    if self.name:
      upperint = "_" + self.name.upper()
    if self.dev:
      dev = "_DEV"
    return "PPB_OPENGLES2%s%s_INTERFACE" % (upperint, dev)

  def GetInterfaceString(self):
    dev = ""
    if self.dev:
      dev = "(Dev)"
    return "PPB_OpenGLES2%s%s" % (self.name, dev)

  def GetStructName(self):
    dev = ""
    if self.dev:
      dev = "_Dev"
    return "PPB_OpenGLES2%s%s" % (self.name, dev)


class ImmediateFunction(Function):
  """A class that represnets an immediate function command."""

  def __init__(self, func):
    Function.__init__(
        self,
        "%sImmediate" % func.name,
        func.info)

  def InitFunction(self):
    # Override args in original_args and args_for_cmds with immediate versions
    # of the args.

    new_original_args = []
    for arg in self.original_args:
      new_arg = arg.GetImmediateVersion()
      if new_arg:
        new_original_args.append(new_arg)
    self.original_args = new_original_args

    new_args_for_cmds = []
    for arg in self.args_for_cmds:
      new_arg = arg.GetImmediateVersion()
      if new_arg:
        new_args_for_cmds.append(new_arg)

    self.args_for_cmds = new_args_for_cmds

    Function.InitFunction(self)

  def IsImmediate(self):
    return True

  def WriteCommandDescription(self, file):
    """Overridden from Function"""
    file.Write("//! Immediate version of command that corresponds to gl%s.\n" %
        self.original_name)

  def WriteServiceImplementation(self, file):
    """Overridden from Function"""
    self.type_handler.WriteImmediateServiceImplementation(self, file)

  def WriteHandlerImplementation(self, file):
    """Overridden from Function"""
    self.type_handler.WriteImmediateHandlerImplementation(self, file)

  def WriteServiceUnitTest(self, file, *extras):
    """Writes the service implementation for a command."""
    self.type_handler.WriteImmediateServiceUnitTest(self, file, *extras)

  def WriteValidationCode(self, file):
    """Overridden from Function"""
    self.type_handler.WriteImmediateValidationCode(self, file)

  def WriteCmdArgFlag(self, file):
    """Overridden from Function"""
    file.Write("  static const cmd::ArgFlags kArgFlags = cmd::kAtLeastN;\n")

  def WriteCmdComputeSize(self, file):
    """Overridden from Function"""
    self.type_handler.WriteImmediateCmdComputeSize(self, file)

  def WriteCmdSetHeader(self, file):
    """Overridden from Function"""
    self.type_handler.WriteImmediateCmdSetHeader(self, file)

  def WriteCmdInit(self, file):
    """Overridden from Function"""
    self.type_handler.WriteImmediateCmdInit(self, file)

  def WriteCmdSet(self, file):
    """Overridden from Function"""
    self.type_handler.WriteImmediateCmdSet(self, file)

  def WriteCmdHelper(self, file):
    """Overridden from Function"""
    self.type_handler.WriteImmediateCmdHelper(self, file)

  def WriteFormatTest(self, file):
    """Overridden from Function"""
    self.type_handler.WriteImmediateFormatTest(self, file)


class BucketFunction(Function):
  """A class that represnets a bucket version of a function command."""

  def __init__(self, func):
    Function.__init__(
      self,
      "%sBucket" % func.name,
      func.info)

  def InitFunction(self):
    # Override args in original_args and args_for_cmds with bucket versions
    # of the args.

    new_original_args = []
    for arg in self.original_args:
      new_arg = arg.GetBucketVersion()
      if new_arg:
        new_original_args.append(new_arg)
    self.original_args = new_original_args

    new_args_for_cmds = []
    for arg in self.args_for_cmds:
      new_arg = arg.GetBucketVersion()
      if new_arg:
        new_args_for_cmds.append(new_arg)

    self.args_for_cmds = new_args_for_cmds

    Function.InitFunction(self)

  def WriteCommandDescription(self, file):
    """Overridden from Function"""
    file.Write("//! Bucket version of command that corresponds to gl%s.\n" %
        self.original_name)

  def WriteServiceImplementation(self, file):
    """Overridden from Function"""
    self.type_handler.WriteBucketServiceImplementation(self, file)

  def WriteHandlerImplementation(self, file):
    """Overridden from Function"""
    self.type_handler.WriteBucketHandlerImplementation(self, file)

  def WriteServiceUnitTest(self, file, *extras):
    """Writes the service implementation for a command."""
    self.type_handler.WriteBucketServiceUnitTest(self, file, *extras)


def CreateArg(arg_string):
  """Creates an Argument."""
  arg_parts = arg_string.split()
  if len(arg_parts) == 1 and arg_parts[0] == 'void':
    return None
  # Is this a pointer argument?
  elif arg_string.find('*') >= 0:
    return PointerArgument(
        arg_parts[-1],
        " ".join(arg_parts[0:-1]))
  # Is this a resource argument? Must come after pointer check.
  elif arg_parts[0].startswith('GLidBind'):
    return ResourceIdBindArgument(arg_parts[-1], " ".join(arg_parts[0:-1]))
  elif arg_parts[0].startswith('GLidZero'):
    return ResourceIdZeroArgument(arg_parts[-1], " ".join(arg_parts[0:-1]))
  elif arg_parts[0].startswith('GLid'):
    return ResourceIdArgument(arg_parts[-1], " ".join(arg_parts[0:-1]))
  elif arg_parts[0].startswith('GLenum') and len(arg_parts[0]) > 6:
    return EnumArgument(arg_parts[-1], " ".join(arg_parts[0:-1]))
  elif arg_parts[0].startswith('GLboolean') and len(arg_parts[0]) > 9:
    return ValidatedBoolArgument(arg_parts[-1], " ".join(arg_parts[0:-1]))
  elif arg_parts[0].startswith('GLboolean'):
    return BoolArgument(arg_parts[-1], " ".join(arg_parts[0:-1]))
  elif arg_parts[0].startswith('GLintUniformLocation'):
    return UniformLocationArgument(arg_parts[-1])
  elif (arg_parts[0].startswith('GLint') and len(arg_parts[0]) > 5 and
        not arg_parts[0].startswith('GLintptr')):
    return IntArgument(arg_parts[-1], " ".join(arg_parts[0:-1]))
  elif (arg_parts[0].startswith('GLsizeiNotNegative') or
        arg_parts[0].startswith('GLintptrNotNegative')):
    return SizeNotNegativeArgument(arg_parts[-1],
                                   " ".join(arg_parts[0:-1]),
                                   arg_parts[0][0:-11])
  elif arg_parts[0].startswith('GLsize'):
    return SizeArgument(arg_parts[-1], " ".join(arg_parts[0:-1]))
  else:
    return Argument(arg_parts[-1], " ".join(arg_parts[0:-1]))


class GLGenerator(object):
  """A class to generate GL command buffers."""

  _function_re = re.compile(r'GL_APICALL(.*?)GL_APIENTRY (.*?) \((.*?)\);')

  def __init__(self, verbose):
    self.original_functions = []
    self.functions = []
    self.verbose = verbose
    self.errors = 0
    self.pepper_interfaces = []
    self.interface_info = {}
    self.generated_cpp_filenames = []

    for interface in _PEPPER_INTERFACES:
      interface = PepperInterface(interface)
      self.pepper_interfaces.append(interface)
      self.interface_info[interface.GetName()] = interface

  def AddFunction(self, func):
    """Adds a function."""
    self.functions.append(func)

  def GetFunctionInfo(self, name):
    """Gets a type info for the given function name."""
    if name in _FUNCTION_INFO:
      func_info = _FUNCTION_INFO[name].copy()
    else:
      func_info = {}

    if not 'type' in func_info:
      func_info['type'] = ''

    return func_info

  def Log(self, msg):
    """Prints something if verbose is true."""
    if self.verbose:
      print msg

  def Error(self, msg):
    """Prints an error."""
    print "Error: %s" % msg
    self.errors += 1

  def WriteLicense(self, file):
    """Writes the license."""
    file.Write(_LICENSE)

  def WriteNamespaceOpen(self, file):
    """Writes the code for the namespace."""
    file.Write("namespace gpu {\n")
    file.Write("namespace gles2 {\n")
    file.Write("\n")

  def WriteNamespaceClose(self, file):
    """Writes the code to close the namespace."""
    file.Write("}  // namespace gles2\n")
    file.Write("}  // namespace gpu\n")
    file.Write("\n")

  def ParseGLH(self, filename):
    """Parses the cmd_buffer_functions.txt file and extracts the functions"""
    f = open(filename, "r")
    functions = f.read()
    f.close()
    for line in functions.splitlines():
      match = self._function_re.match(line)
      if match:
        func_name = match.group(2)[2:]
        func_info = self.GetFunctionInfo(func_name)
        if func_info['type'] == 'Noop':
          continue

        parsed_func_info = {
          'original_name': func_name,
          'original_args': match.group(3),
          'return_type': match.group(1).strip(),
        }

        for k in parsed_func_info.keys():
          if not k in func_info:
            func_info[k] = parsed_func_info[k]

        f = Function(func_name, func_info)
        self.original_functions.append(f)

        #for arg in f.GetOriginalArgs():
        #  if not isinstance(arg, EnumArgument) and arg.type == 'GLenum':
        #    self.Log("%s uses bare GLenum %s." % (func_name, arg.name))

        gen_cmd = f.GetInfo('gen_cmd')
        if gen_cmd == True or gen_cmd == None:
          if f.type_handler.NeedsDataTransferFunction(f):
            methods = f.GetDataTransferMethods()
            if 'immediate' in methods:
              self.AddFunction(ImmediateFunction(f))
            if 'bucket' in methods:
              self.AddFunction(BucketFunction(f))
            if 'shm' in methods:
              self.AddFunction(f)
          else:
            self.AddFunction(f)

    self.Log("Auto Generated Functions    : %d" %
             len([f for f in self.functions if f.can_auto_generate or
                  (not f.IsType('') and not f.IsType('Custom') and
                   not f.IsType('Todo'))]))

    funcs = [f for f in self.functions if not f.can_auto_generate and
             (f.IsType('') or f.IsType('Custom') or f.IsType('Todo'))]
    self.Log("Non Auto Generated Functions: %d" % len(funcs))

    for f in funcs:
      self.Log("  %-10s %-20s gl%s" % (f.info['type'], f.return_type, f.name))

  def WriteCommandIds(self, filename):
    """Writes the command buffer format"""
    file = CHeaderWriter(filename)
    file.Write("#define GLES2_COMMAND_LIST(OP) \\\n")
    id = 256
    for func in self.functions:
      file.Write("  %-60s /* %d */ \\\n" %
                 ("OP(%s)" % func.name, id))
      id += 1
    file.Write("\n")

    file.Write("enum CommandId {\n")
    file.Write("  kStartPoint = cmd::kLastCommonId,  "
               "// All GLES2 commands start after this.\n")
    file.Write("#define GLES2_CMD_OP(name) k ## name,\n")
    file.Write("  GLES2_COMMAND_LIST(GLES2_CMD_OP)\n")
    file.Write("#undef GLES2_CMD_OP\n")
    file.Write("  kNumCommands\n")
    file.Write("};\n")
    file.Write("\n")
    file.Close()
    self.generated_cpp_filenames.append(file.filename)

  def WriteFormat(self, filename):
    """Writes the command buffer format"""
    file = CHeaderWriter(filename)
    for func in self.functions:
      if True:
      #gen_cmd = func.GetInfo('gen_cmd')
      #if gen_cmd == True or gen_cmd == None:
        func.WriteStruct(file)
    file.Write("\n")
    file.Close()
    self.generated_cpp_filenames.append(file.filename)

  def WriteDocs(self, filename):
    """Writes the command buffer doc version of the commands"""
    file = CWriter(filename)
    for func in self.functions:
      if True:
      #gen_cmd = func.GetInfo('gen_cmd')
      #if gen_cmd == True or gen_cmd == None:
        func.WriteDocs(file)
    file.Write("\n")
    file.Close()
    self.generated_cpp_filenames.append(file.filename)

  def WriteFormatTest(self, filename):
    """Writes the command buffer format test."""
    file = CHeaderWriter(
      filename,
      "// This file contains unit tests for gles2 commmands\n"
      "// It is included by gles2_cmd_format_test.cc\n"
      "\n")

    for func in self.functions:
      if True:
      #gen_cmd = func.GetInfo('gen_cmd')
      #if gen_cmd == True or gen_cmd == None:
        func.WriteFormatTest(file)

    file.Close()
    self.generated_cpp_filenames.append(file.filename)

  def WriteCmdHelperHeader(self, filename):
    """Writes the gles2 command helper."""
    file = CHeaderWriter(filename)

    for func in self.functions:
      if True:
      #gen_cmd = func.GetInfo('gen_cmd')
      #if gen_cmd == True or gen_cmd == None:
        func.WriteCmdHelper(file)

    file.Close()
    self.generated_cpp_filenames.append(file.filename)

  def WriteServiceContextStateHeader(self, filename):
    """Writes the service context state header."""
    file = CHeaderWriter(
        filename,
        "// It is included by context_state.h\n")
    file.Write("struct EnableFlags {\n")
    file.Write("  EnableFlags();\n")
    for capability in _CAPABILITY_FLAGS:
      file.Write("  bool %s;\n" % capability['name'])
      file.Write("  bool cached_%s;\n" % capability['name'])
    file.Write("};\n\n")

    for state_name in sorted(_STATES.keys()):
      state = _STATES[state_name]
      for item in state['states']:
        if isinstance(item['default'], list):
          file.Write("%s %s[%d];\n" % (item['type'], item['name'],
                                       len(item['default'])))
        else:
          file.Write("%s %s;\n" % (item['type'], item['name']))

        if item.get('cached', False):
          if isinstance(item['default'], list):
            file.Write("%s cached_%s[%d];\n" % (item['type'], item['name'],
                                                len(item['default'])))
          else:
            file.Write("%s cached_%s;\n" % (item['type'], item['name']))

    file.Write("\n")

    file.Write("""
        inline void SetDeviceCapabilityState(GLenum cap, bool enable) {
          switch (cap) {
        """)
    for capability in _CAPABILITY_FLAGS:
      file.Write("""\
            case GL_%s:
          """ % capability['name'].upper())
      file.Write("""\
              if (enable_flags.cached_%(name)s == enable &&
                  !ignore_cached_state)
                return;
              enable_flags.cached_%(name)s = enable;
              break;
          """ % capability)

    file.Write("""\
            default:
              NOTREACHED();
              return;
          }
          if (enable)
            glEnable(cap);
          else
            glDisable(cap);
        }
        """)

    file.Close()
    self.generated_cpp_filenames.append(file.filename)

  def WriteClientContextStateHeader(self, filename):
    """Writes the client context state header."""
    file = CHeaderWriter(
        filename,
        "// It is included by client_context_state.h\n")
    file.Write("struct EnableFlags {\n")
    file.Write("  EnableFlags();\n")
    for capability in _CAPABILITY_FLAGS:
      file.Write("  bool %s;\n" % capability['name'])
    file.Write("};\n\n")

    file.Close()
    self.generated_cpp_filenames.append(file.filename)

  def WriteContextStateGetters(self, file, class_name):
    """Writes the state getters."""
    for gl_type in ["GLint", "GLfloat"]:
      file.Write("""
bool %s::GetStateAs%s(
    GLenum pname, %s* params, GLsizei* num_written) const {
  switch (pname) {
""" % (class_name, gl_type, gl_type))
      for state_name in sorted(_STATES.keys()):
        state = _STATES[state_name]
        if 'enum' in state:
          file.Write("    case %s:\n" % state['enum'])
          file.Write("      *num_written = %d;\n" % len(state['states']))
          file.Write("      if (params) {\n")
          for ndx,item in enumerate(state['states']):
            file.Write("        params[%d] = static_cast<%s>(%s);\n" %
                       (ndx, gl_type, item['name']))
          file.Write("      }\n")
          file.Write("      return true;\n")
        else:
          for item in state['states']:
            file.Write("    case %s:\n" % item['enum'])
            if isinstance(item['default'], list):
              item_len = len(item['default'])
              file.Write("      *num_written = %d;\n" % item_len)
              file.Write("      if (params) {\n")
              if item['type'] == gl_type:
                file.Write("        memcpy(params, %s, sizeof(%s) * %d);\n" %
                           (item['name'], item['type'], item_len))
              else:
                file.Write("        for (size_t i = 0; i < %s; ++i) {\n" %
                           item_len)
                file.Write("          params[i] = %s;\n" %
                           (GetGLGetTypeConversion(gl_type, item['type'],
                                                   "%s[i]" % item['name'])))
                file.Write("        }\n");
            else:
              file.Write("      *num_written = 1;\n")
              file.Write("      if (params) {\n")
              file.Write("        params[0] = %s;\n" %
                         (GetGLGetTypeConversion(gl_type, item['type'],
                                                 item['name'])))
            file.Write("      }\n")
            file.Write("      return true;\n")
      for capability in _CAPABILITY_FLAGS:
            file.Write("    case GL_%s:\n" % capability['name'].upper())
            file.Write("      *num_written = 1;\n")
            file.Write("      if (params) {\n")
            file.Write(
                "        params[0] = static_cast<%s>(enable_flags.%s);\n" %
                (gl_type, capability['name']))
            file.Write("      }\n")
            file.Write("      return true;\n")
      file.Write("""    default:
      return false;
  }
}
""")

  def WriteServiceContextStateImpl(self, filename):
    """Writes the context state service implementation."""
    file = CHeaderWriter(
        filename,
        "// It is included by context_state.cc\n")
    code = []
    for capability in _CAPABILITY_FLAGS:
      code.append("%s(%s)" %
                  (capability['name'],
                   ('false', 'true')['default' in capability]))
      code.append("cached_%s(%s)" %
                  (capability['name'],
                   ('false', 'true')['default' in capability]))
    file.Write("ContextState::EnableFlags::EnableFlags()\n    : %s {\n}\n" %
               ",\n      ".join(code))
    file.Write("\n")

    file.Write("void ContextState::Initialize() {\n")
    for state_name in sorted(_STATES.keys()):
      state = _STATES[state_name]
      for item in state['states']:
        if isinstance(item['default'], list):
          for ndx, value in enumerate(item['default']):
            file.Write("  %s[%d] = %s;\n" % (item['name'], ndx, value))
        else:
          file.Write("  %s = %s;\n" % (item['name'], item['default']))
        if item.get('cached', False):
          if isinstance(item['default'], list):
            for ndx, value in enumerate(item['default']):
              file.Write("  cached_%s[%d] = %s;\n" % (item['name'], ndx, value))
          else:
            file.Write("  cached_%s = %s;\n" % (item['name'], item['default']))
    file.Write("}\n")

    file.Write("""
void ContextState::InitCapabilities(const ContextState* prev_state) const {
""")
    def WriteCapabilities(test_prev):
      for capability in _CAPABILITY_FLAGS:
        capability_name = capability['name']
        if test_prev:
          file.Write("""  if (prev_state->enable_flags.cached_%s !=
                              enable_flags.cached_%s)\n""" %
                     (capability_name, capability_name))
        file.Write("    EnableDisable(GL_%s, enable_flags.cached_%s);\n" %
                   (capability_name.upper(), capability_name))

    file.Write("  if (prev_state) {")
    WriteCapabilities(True)
    file.Write("  } else {")
    WriteCapabilities(False)
    file.Write("  }")

    file.Write("""}

void ContextState::InitState(const ContextState *prev_state) const {
""")

    def WriteStates(test_prev):
      # We need to sort the keys so the expectations match
      for state_name in sorted(_STATES.keys()):
        state = _STATES[state_name]
        if state['type'] == 'FrontBack':
          num_states = len(state['states'])
          for ndx, group in enumerate(Grouper(num_states / 2, state['states'])):
            if test_prev:
              file.Write("  if (")
            args = []
            for place, item in enumerate(group):
              item_name = CachedStateName(item)
              args.append('%s' % item_name)
              if test_prev:
                if place > 0:
                  file.Write(' ||\n')
                file.Write("(%s != prev_state->%s)" % (item_name, item_name))
            if test_prev:
              file.Write(")\n")
            file.Write(
                "  gl%s(%s, %s);\n" %
                (state['func'], ('GL_FRONT', 'GL_BACK')[ndx], ", ".join(args)))
        elif state['type'] == 'NamedParameter':
          for item in state['states']:
            item_name = CachedStateName(item)

            if 'extension_flag' in item:
              file.Write("  if (feature_info_->feature_flags().%s) {\n  " %
                         item['extension_flag'])
            if test_prev:
              if isinstance(item['default'], list):
                file.Write("  if (memcmp(prev_state->%s, %s, "
                           "sizeof(%s) * %d)) {\n" %
                           (item_name, item_name, item['type'],
                            len(item['default'])))
              else:
                file.Write("  if (prev_state->%s != %s) {\n  " %
                           (item_name, item_name))
            file.Write("  gl%s(%s, %s);\n" %
                       (state['func'],
                        (item['enum_set']
                           if 'enum_set' in item else item['enum']),
                        item['name']))
            if test_prev:
              if 'extension_flag' in item:
                file.Write("  ")
              file.Write("  }")
            if 'extension_flag' in item:
              file.Write("  }")
        else:
          if 'extension_flag' in state:
            file.Write("  if (feature_info_->feature_flags().%s)\n  " %
                       state['extension_flag'])
          if test_prev:
            file.Write("  if (")
          args = []
          for place, item in enumerate(state['states']):
            item_name = CachedStateName(item)
            args.append('%s' % item_name)
            if test_prev:
              if place > 0:
                file.Write(' ||\n')
              file.Write("(%s != prev_state->%s)" %
                         (item_name, item_name))
          if test_prev:
            file.Write("    )\n")
          file.Write("  gl%s(%s);\n" % (state['func'], ", ".join(args)))

    file.Write("  if (prev_state) {")
    WriteStates(True)
    file.Write("  } else {")
    WriteStates(False)
    file.Write("  }")
    file.Write("}\n")

    file.Write("""bool ContextState::GetEnabled(GLenum cap) const {
  switch (cap) {
""")
    for capability in _CAPABILITY_FLAGS:
      file.Write("    case GL_%s:\n" % capability['name'].upper())
      file.Write("      return enable_flags.%s;\n" % capability['name'])
    file.Write("""    default:
      NOTREACHED();
      return false;
  }
}
""")

    self.WriteContextStateGetters(file, "ContextState")
    file.Close()
    self.generated_cpp_filenames.append(file.filename)

  def WriteClientContextStateImpl(self, filename):
    """Writes the context state client side implementation."""
    file = CHeaderWriter(
        filename,
        "// It is included by client_context_state.cc\n")
    code = []
    for capability in _CAPABILITY_FLAGS:
      code.append("%s(%s)" %
                  (capability['name'],
                   ('false', 'true')['default' in capability]))
    file.Write(
      "ClientContextState::EnableFlags::EnableFlags()\n    : %s {\n}\n" %
      ",\n      ".join(code))
    file.Write("\n")

    file.Write("""
bool ClientContextState::SetCapabilityState(
    GLenum cap, bool enabled, bool* changed) {
  *changed = false;
  switch (cap) {
""")
    for capability in _CAPABILITY_FLAGS:
      file.Write("    case GL_%s:\n" % capability['name'].upper())
      file.Write("""      if (enable_flags.%(name)s != enabled) {
         *changed = true;
         enable_flags.%(name)s = enabled;
      }
      return true;
""" % capability)
    file.Write("""    default:
      return false;
  }
}
""")
    file.Write("""bool ClientContextState::GetEnabled(
    GLenum cap, bool* enabled) const {
  switch (cap) {
""")
    for capability in _CAPABILITY_FLAGS:
      file.Write("    case GL_%s:\n" % capability['name'].upper())
      file.Write("      *enabled = enable_flags.%s;\n" % capability['name'])
      file.Write("      return true;\n")
    file.Write("""    default:
      return false;
  }
}
""")
    file.Close()
    self.generated_cpp_filenames.append(file.filename)

  def WriteServiceImplementation(self, filename):
    """Writes the service decorder implementation."""
    file = CHeaderWriter(
        filename,
        "// It is included by gles2_cmd_decoder.cc\n")

    for func in self.functions:
      if True:
      #gen_cmd = func.GetInfo('gen_cmd')
      #if gen_cmd == True or gen_cmd == None:
        func.WriteServiceImplementation(file)

    file.Write("""
bool GLES2DecoderImpl::SetCapabilityState(GLenum cap, bool enabled) {
  switch (cap) {
""")
    for capability in _CAPABILITY_FLAGS:
      file.Write("    case GL_%s:\n" % capability['name'].upper())
      if 'state_flag' in capability:

        file.Write("""\
            state_.enable_flags.%(name)s = enabled;
            if (state_.enable_flags.cached_%(name)s != enabled
                || state_.ignore_cached_state) {
              %(state_flag)s = true;
            }
            return false;
            """ % capability)
      else:
        file.Write("""\
            state_.enable_flags.%(name)s = enabled;
            if (state_.enable_flags.cached_%(name)s != enabled
                || state_.ignore_cached_state) {
              state_.enable_flags.cached_%(name)s = enabled;
              return true;
            }
            return false;
            """ % capability)
    file.Write("""    default:
      NOTREACHED();
      return false;
  }
}
""")
    file.Close()
    self.generated_cpp_filenames.append(file.filename)

  def WriteServiceUnitTests(self, filename):
    """Writes the service decorder unit tests."""
    num_tests = len(self.functions)
    FUNCTIONS_PER_FILE = 98  # hard code this so it doesn't change.
    count = 0
    for test_num in range(0, num_tests, FUNCTIONS_PER_FILE):
      count += 1
      name = filename % count
      file = CHeaderWriter(
          name,
          "// It is included by gles2_cmd_decoder_unittest_%d.cc\n" % count)
      test_name = 'GLES2DecoderTest%d' % count
      end = test_num + FUNCTIONS_PER_FILE
      if end > num_tests:
        end = num_tests
      for idx in range(test_num, end):
        func = self.functions[idx]

        # Do any filtering of the functions here, so that the functions
        # will not move between the numbered files if filtering properties
        # are changed.
        if func.GetInfo('extension_flag'):
          continue

        if True:
        #gen_cmd = func.GetInfo('gen_cmd')
        #if gen_cmd == True or gen_cmd == None:
          if func.GetInfo('unit_test') == False:
            file.Write("// TODO(gman): %s\n" % func.name)
          else:
            func.WriteServiceUnitTest(file, {
              'test_name': test_name
            })
      file.Close()
      self.generated_cpp_filenames.append(file.filename)
    file = CHeaderWriter(
        filename % 0,
        "// It is included by gles2_cmd_decoder_unittest_base.cc\n")
    file.Write(
"""void GLES2DecoderTestBase::SetupInitCapabilitiesExpectations() {
""")
    for capability in _CAPABILITY_FLAGS:
      file.Write("  ExpectEnableDisable(GL_%s, %s);\n" %
                 (capability['name'].upper(),
                  ('false', 'true')['default' in capability]))
    file.Write("""}

void GLES2DecoderTestBase::SetupInitStateExpectations() {
""")

    # We need to sort the keys so the expectations match
    for state_name in sorted(_STATES.keys()):
      state = _STATES[state_name]
      if state['type'] == 'FrontBack':
        num_states = len(state['states'])
        for ndx, group in enumerate(Grouper(num_states / 2, state['states'])):
          args = []
          for item in group:
            if 'expected' in item:
              args.append(item['expected'])
            else:
              args.append(item['default'])
          file.Write(
              "  EXPECT_CALL(*gl_, %s(%s, %s))\n" %
              (state['func'], ('GL_FRONT', 'GL_BACK')[ndx], ", ".join(args)))
          file.Write("      .Times(1)\n")
          file.Write("      .RetiresOnSaturation();\n")
      elif state['type'] == 'NamedParameter':
        for item in state['states']:
          if 'extension_flag' in item:
            file.Write("  if (group_->feature_info()->feature_flags().%s) {\n" %
                       item['extension_flag'])
            file.Write("  ")
          expect_value = item['default']
          if isinstance(expect_value, list):
            # TODO: Currently we do not check array values.
            expect_value = "_"

          file.Write(
              "  EXPECT_CALL(*gl_, %s(%s, %s))\n" %
              (state['func'],
               (item['enum_set']
                           if 'enum_set' in item else item['enum']),
               expect_value))
          file.Write("      .Times(1)\n")
          file.Write("      .RetiresOnSaturation();\n")
          if 'extension_flag' in item:
            file.Write("  }\n")
      else:
        if 'extension_flag' in state:
          file.Write("  if (group_->feature_info()->feature_flags().%s) {\n" %
                     state['extension_flag'])
          file.Write("  ")
        args = []
        for item in state['states']:
          if 'expected' in item:
            args.append(item['expected'])
          else:
            args.append(item['default'])
        # TODO: Currently we do not check array values.
        args = ["_" if isinstance(arg, list) else arg for arg in args]
        file.Write("  EXPECT_CALL(*gl_, %s(%s))\n" %
                   (state['func'], ", ".join(args)))
        file.Write("      .Times(1)\n")
        file.Write("      .RetiresOnSaturation();\n")
        if 'extension_flag' in state:
          file.Write("  }\n")
    file.Write("""}
""")
    file.Close()
    self.generated_cpp_filenames.append(file.filename)

  def WriteServiceUnitTestsForExtensions(self, filename):
    """Writes the service decorder unit tests for functions with extension_flag.

       The functions are special in that they need a specific unit test
       baseclass to turn on the extension.
    """
    functions = [f for f in self.functions if f.GetInfo('extension_flag')]
    file = CHeaderWriter(
      filename,
      "// It is included by gles2_cmd_decoder_unittest_extensions.cc\n")
    for func in functions:
      if True:
        if func.GetInfo('unit_test') == False:
          file.Write("// TODO(gman): %s\n" % func.name)
        else:
          extension = ToCamelCase(
            ToGLExtensionString(func.GetInfo('extension_flag')))
          func.WriteServiceUnitTest(file, {
            'test_name': 'GLES2DecoderTestWith%s' % extension
          })

    file.Close()
    self.generated_cpp_filenames.append(file.filename)

  def WriteGLES2Header(self, filename):
    """Writes the GLES2 header."""
    file = CHeaderWriter(
        filename,
        "// This file contains Chromium-specific GLES2 declarations.\n\n")

    for func in self.original_functions:
      func.WriteGLES2Header(file)

    file.Write("\n")
    file.Close()
    self.generated_cpp_filenames.append(file.filename)

  def WriteGLES2CLibImplementation(self, filename):
    """Writes the GLES2 c lib implementation."""
    file = CHeaderWriter(
        filename,
        "// These functions emulate GLES2 over command buffers.\n")

    for func in self.original_functions:
      func.WriteGLES2CLibImplementation(file)

    file.Write("""
namespace gles2 {

extern const NameToFunc g_gles2_function_table[] = {
""")
    for func in self.original_functions:
      file.Write(
          '  { "gl%s", reinterpret_cast<GLES2FunctionPointer>(gl%s), },\n' %
          (func.name, func.name))
    file.Write("""  { NULL, NULL, },
};

}  // namespace gles2
""")
    file.Close()
    self.generated_cpp_filenames.append(file.filename)

  def WriteGLES2InterfaceHeader(self, filename):
    """Writes the GLES2 interface header."""
    file = CHeaderWriter(
        filename,
        "// This file is included by gles2_interface.h to declare the\n"
        "// GL api functions.\n")
    for func in self.original_functions:
      func.WriteGLES2InterfaceHeader(file)
    file.Close()
    self.generated_cpp_filenames.append(file.filename)

  def WriteGLES2InterfaceStub(self, filename):
    """Writes the GLES2 interface stub header."""
    file = CHeaderWriter(
        filename,
        "// This file is included by gles2_interface_stub.h.\n")
    for func in self.original_functions:
      func.WriteGLES2InterfaceStub(file)
    file.Close()
    self.generated_cpp_filenames.append(file.filename)

  def WriteGLES2InterfaceStubImpl(self, filename):
    """Writes the GLES2 interface header."""
    file = CHeaderWriter(
        filename,
        "// This file is included by gles2_interface_stub.cc.\n")
    for func in self.original_functions:
      func.WriteGLES2InterfaceStubImpl(file)
    file.Close()
    self.generated_cpp_filenames.append(file.filename)

  def WriteGLES2ImplementationHeader(self, filename):
    """Writes the GLES2 Implementation header."""
    file = CHeaderWriter(
        filename,
        "// This file is included by gles2_implementation.h to declare the\n"
        "// GL api functions.\n")
    for func in self.original_functions:
      func.WriteGLES2ImplementationHeader(file)
    file.Close()
    self.generated_cpp_filenames.append(file.filename)

  def WriteGLES2Implementation(self, filename):
    """Writes the GLES2 Implementation."""
    file = CHeaderWriter(
        filename,
        "// This file is included by gles2_implementation.cc to define the\n"
        "// GL api functions.\n")
    for func in self.original_functions:
      func.WriteGLES2Implementation(file)
    file.Close()
    self.generated_cpp_filenames.append(file.filename)

  def WriteGLES2TraceImplementationHeader(self, filename):
    """Writes the GLES2 Trace Implementation header."""
    file = CHeaderWriter(
        filename,
        "// This file is included by gles2_trace_implementation.h\n")
    for func in self.original_functions:
      func.WriteGLES2TraceImplementationHeader(file)
    file.Close()
    self.generated_cpp_filenames.append(file.filename)

  def WriteGLES2TraceImplementation(self, filename):
    """Writes the GLES2 Trace Implementation."""
    file = CHeaderWriter(
        filename,
        "// This file is included by gles2_trace_implementation.cc\n")
    for func in self.original_functions:
      func.WriteGLES2TraceImplementation(file)
    file.Close()
    self.generated_cpp_filenames.append(file.filename)

  def WriteGLES2ImplementationUnitTests(self, filename):
    """Writes the GLES2 helper header."""
    file = CHeaderWriter(
        filename,
        "// This file is included by gles2_implementation.h to declare the\n"
        "// GL api functions.\n")
    for func in self.original_functions:
      func.WriteGLES2ImplementationUnitTest(file)
    file.Close()
    self.generated_cpp_filenames.append(file.filename)

  def WriteServiceUtilsHeader(self, filename):
    """Writes the gles2 auto generated utility header."""
    file = CHeaderWriter(filename)
    for name in sorted(_NAMED_TYPE_INFO.keys()):
      named_type = NamedType(_NAMED_TYPE_INFO[name])
      if named_type.IsConstant():
        continue
      file.Write("ValueValidator<%s> %s;\n" %
                 (named_type.GetType(), ToUnderscore(name)))
    file.Write("\n")
    file.Close()
    self.generated_cpp_filenames.append(file.filename)

  def WriteServiceUtilsImplementation(self, filename):
    """Writes the gles2 auto generated utility implementation."""
    file = CHeaderWriter(filename)
    names = sorted(_NAMED_TYPE_INFO.keys())
    for name in names:
      named_type = NamedType(_NAMED_TYPE_INFO[name])
      if named_type.IsConstant():
        continue
      if named_type.GetValidValues():
        file.Write("static const %s valid_%s_table[] = {\n" %
                   (named_type.GetType(), ToUnderscore(name)))
        for value in named_type.GetValidValues():
          file.Write("  %s,\n" % value)
        file.Write("};\n")
        file.Write("\n")
    file.Write("Validators::Validators()")
    pre = '    : '
    for count, name in enumerate(names):
      named_type = NamedType(_NAMED_TYPE_INFO[name])
      if named_type.IsConstant():
        continue
      if named_type.GetValidValues():
        code = """%(pre)s%(name)s(
          valid_%(name)s_table, arraysize(valid_%(name)s_table))"""
      else:
        code = "%(pre)s%(name)s()"
      file.Write(code % {
        'name': ToUnderscore(name),
        'pre': pre,
      })
      pre = ',\n    '
    file.Write(" {\n");
    file.Write("}\n\n");
    file.Close()
    self.generated_cpp_filenames.append(file.filename)

  def WriteCommonUtilsHeader(self, filename):
    """Writes the gles2 common utility header."""
    file = CHeaderWriter(filename)
    type_infos = sorted(_NAMED_TYPE_INFO.keys())
    for type_info in type_infos:
      if _NAMED_TYPE_INFO[type_info]['type'] == 'GLenum':
        file.Write("static std::string GetString%s(uint32_t value);\n" %
                   type_info)
    file.Write("\n")
    file.Close()
    self.generated_cpp_filenames.append(file.filename)

  def WriteCommonUtilsImpl(self, filename):
    """Writes the gles2 common utility header."""
    enum_re = re.compile(r'\#define\s+(GL_[a-zA-Z0-9_]+)\s+([0-9A-Fa-fx]+)')
    dict = {}
    for fname in ['third_party/khronos/GLES2/gl2.h',
                  'third_party/khronos/GLES2/gl2ext.h',
                  'gpu/GLES2/gl2chromium.h',
                  'gpu/GLES2/gl2extchromium.h']:
      lines = open(fname).readlines()
      for line in lines:
        m = enum_re.match(line)
        if m:
          name = m.group(1)
          value = m.group(2)
          if len(value) <= 10 and not value in dict:
            dict[value] = name

    file = CHeaderWriter(filename)
    file.Write("static const GLES2Util::EnumToString "
               "enum_to_string_table[] = {\n")
    for value in dict:
      file.Write('  { %s, "%s", },\n' % (value, dict[value]))
    file.Write("""};

const GLES2Util::EnumToString* const GLES2Util::enum_to_string_table_ =
    enum_to_string_table;
const size_t GLES2Util::enum_to_string_table_len_ =
    sizeof(enum_to_string_table) / sizeof(enum_to_string_table[0]);

""")

    enums = sorted(_NAMED_TYPE_INFO.keys())
    for enum in enums:
      if _NAMED_TYPE_INFO[enum]['type'] == 'GLenum':
        file.Write("std::string GLES2Util::GetString%s(uint32_t value) {\n" %
                   enum)
        if len(_NAMED_TYPE_INFO[enum]['valid']) > 0:
          file.Write("  static const EnumToString string_table[] = {\n")
          for value in _NAMED_TYPE_INFO[enum]['valid']:
            file.Write('    { %s, "%s" },\n' % (value, value))
          file.Write("""  };
  return GLES2Util::GetQualifiedEnumString(
      string_table, arraysize(string_table), value);
}

""")
        else:
          file.Write("""  return GLES2Util::GetQualifiedEnumString(
      NULL, 0, value);
}

""")
    file.Close()
    self.generated_cpp_filenames.append(file.filename)

  def WritePepperGLES2Interface(self, filename, dev):
    """Writes the Pepper OpenGLES interface definition."""
    file = CWriter(filename)
    file.Write(_LICENSE)
    file.Write(_DO_NOT_EDIT_WARNING)

    file.Write("label Chrome {\n")
    file.Write("  M39 = 1.0\n")
    file.Write("};\n\n")

    if not dev:
      # Declare GL types.
      file.Write("[version=1.0]\n")
      file.Write("describe {\n")
      for gltype in ['GLbitfield', 'GLboolean', 'GLbyte', 'GLclampf',
                     'GLclampx', 'GLenum', 'GLfixed', 'GLfloat', 'GLint',
                     'GLintptr', 'GLshort', 'GLsizei', 'GLsizeiptr',
                     'GLubyte', 'GLuint', 'GLushort']:
        file.Write("  %s;\n" % gltype)
        file.Write("  %s_ptr_t;\n" % gltype)
      file.Write("};\n\n")

    # C level typedefs.
    file.Write("#inline c\n")
    file.Write("#include \"ppapi/c/pp_resource.h\"\n")
    if dev:
      file.Write("#include \"ppapi/c/ppb_opengles2.h\"\n\n")
    else:
      file.Write("\n#ifndef __gl2_h_\n")
      for (k, v) in _GL_TYPES.iteritems():
        file.Write("typedef %s %s;\n" % (v, k))
      file.Write("#ifdef _WIN64\n")
      for (k, v) in _GL_TYPES_64.iteritems():
        file.Write("typedef %s %s;\n" % (v, k))
      file.Write("#else\n")
      for (k, v) in _GL_TYPES_32.iteritems():
        file.Write("typedef %s %s;\n" % (v, k))
      file.Write("#endif  // _WIN64\n")
      file.Write("#endif  // __gl2_h_\n\n")
    file.Write("#endinl\n")

    for interface in self.pepper_interfaces:
      if interface.dev != dev:
        continue
      # Historically, we provide OpenGLES2 interfaces with struct
      # namespace. Not to break code which uses the interface as
      # "struct OpenGLES2", we put it in struct namespace.
      file.Write('\n[macro="%s", force_struct_namespace]\n' %
                 interface.GetInterfaceName())
      file.Write("interface %s {\n" % interface.GetStructName())
      for func in self.original_functions:
        if not func.InPepperInterface(interface):
          continue

        ret_type = func.MapCTypeToPepperIdlType(func.return_type,
                                                is_for_return_type=True)
        func_prefix = "  %s %s(" % (ret_type, func.GetPepperName())
        file.Write(func_prefix)
        file.Write("[in] PP_Resource context")
        for arg in func.MakeTypedPepperIdlArgStrings():
          file.Write(",\n" + " " * len(func_prefix) + arg)
        file.Write(");\n")
      file.Write("};\n\n")


    file.Close()

  def WritePepperGLES2Implementation(self, filename):
    """Writes the Pepper OpenGLES interface implementation."""

    file = CWriter(filename)
    file.Write(_LICENSE)
    file.Write(_DO_NOT_EDIT_WARNING)

    file.Write("#include \"ppapi/shared_impl/ppb_opengles2_shared.h\"\n\n")
    file.Write("#include \"base/logging.h\"\n")
    file.Write("#include \"gpu/command_buffer/client/gles2_implementation.h\"\n")
    file.Write("#include \"ppapi/shared_impl/ppb_graphics_3d_shared.h\"\n")
    file.Write("#include \"ppapi/thunk/enter.h\"\n\n")

    file.Write("namespace ppapi {\n\n")
    file.Write("namespace {\n\n")

    file.Write("typedef thunk::EnterResource<thunk::PPB_Graphics3D_API>"
               " Enter3D;\n\n")

    file.Write("gpu::gles2::GLES2Implementation* ToGles2Impl(Enter3D*"
               " enter) {\n")
    file.Write("  DCHECK(enter);\n")
    file.Write("  DCHECK(enter->succeeded());\n")
    file.Write("  return static_cast<PPB_Graphics3D_Shared*>(enter->object())->"
               "gles2_impl();\n");
    file.Write("}\n\n");

    for func in self.original_functions:
      if not func.InAnyPepperExtension():
        continue

      original_arg = func.MakeTypedPepperArgString("")
      context_arg = "PP_Resource context_id"
      if len(original_arg):
        arg = context_arg + ", " + original_arg
      else:
        arg = context_arg
      file.Write("%s %s(%s) {\n" %
                 (func.return_type, func.GetPepperName(), arg))
      file.Write("  Enter3D enter(context_id, true);\n")
      file.Write("  if (enter.succeeded()) {\n")

      return_str = "" if func.return_type == "void" else "return "
      file.Write("    %sToGles2Impl(&enter)->%s(%s);\n" %
                 (return_str, func.original_name,
                  func.MakeOriginalArgString("")))
      file.Write("  }")
      if func.return_type == "void":
        file.Write("\n")
      else:
        file.Write(" else {\n")
        file.Write("    return %s;\n" % func.GetErrorReturnString())
        file.Write("  }\n")
      file.Write("}\n\n")

    file.Write("}  // namespace\n")

    for interface in self.pepper_interfaces:
      file.Write("const %s* PPB_OpenGLES2_Shared::Get%sInterface() {\n" %
                 (interface.GetStructName(), interface.GetName()))
      file.Write("  static const struct %s "
                 "ppb_opengles2 = {\n" % interface.GetStructName())
      file.Write("    &")
      file.Write(",\n    &".join(
        f.GetPepperName() for f in self.original_functions
          if f.InPepperInterface(interface)))
      file.Write("\n")

      file.Write("  };\n")
      file.Write("  return &ppb_opengles2;\n")
      file.Write("}\n")

    file.Write("}  // namespace ppapi\n")
    file.Close()
    self.generated_cpp_filenames.append(file.filename)

  def WriteGLES2ToPPAPIBridge(self, filename):
    """Connects GLES2 helper library to PPB_OpenGLES2 interface"""

    file = CWriter(filename)
    file.Write(_LICENSE)
    file.Write(_DO_NOT_EDIT_WARNING)

    file.Write("#ifndef GL_GLEXT_PROTOTYPES\n")
    file.Write("#define GL_GLEXT_PROTOTYPES\n")
    file.Write("#endif\n")
    file.Write("#include <GLES2/gl2.h>\n")
    file.Write("#include <GLES2/gl2ext.h>\n")
    file.Write("#include \"ppapi/lib/gl/gles2/gl2ext_ppapi.h\"\n\n")

    for func in self.original_functions:
      if not func.InAnyPepperExtension():
        continue

      interface = self.interface_info[func.GetInfo('pepper_interface') or '']

      file.Write("%s GL_APIENTRY gl%s(%s) {\n" %
                 (func.return_type, func.GetPepperName(),
                  func.MakeTypedPepperArgString("")))
      return_str = "" if func.return_type == "void" else "return "
      interface_str = "glGet%sInterfacePPAPI()" % interface.GetName()
      original_arg = func.MakeOriginalArgString("")
      context_arg = "glGetCurrentContextPPAPI()"
      if len(original_arg):
        arg = context_arg + ", " + original_arg
      else:
        arg = context_arg
      if interface.GetName():
        file.Write("  const struct %s* ext = %s;\n" %
                   (interface.GetStructName(), interface_str))
        file.Write("  if (ext)\n")
        file.Write("    %sext->%s(%s);\n" %
                   (return_str, func.GetPepperName(), arg))
        if return_str:
          file.Write("  %s0;\n" % return_str)
      else:
        file.Write("  %s%s->%s(%s);\n" %
                   (return_str, interface_str, func.GetPepperName(), arg))
      file.Write("}\n\n")
    file.Close()
    self.generated_cpp_filenames.append(file.filename)

  def WriteMojoGLCallVisitor(self, filename):
    """Provides the GL implementation for mojo"""
    file = CWriter(filename)
    file.Write(_LICENSE)
    file.Write(_DO_NOT_EDIT_WARNING)

    for func in self.original_functions:
      if not func.IsCoreGLFunction():
        continue
      file.Write("VISIT_GL_CALL(%s, %s, (%s), (%s))\n" %
                             (func.name, func.return_type,
                              func.MakeTypedOriginalArgString(""),
                              func.MakeOriginalArgString("")))

    file.Close()
    self.generated_cpp_filenames.append(file.filename)

  def WriteMojoGLCallVisitorForExtension(self, filename, extension):
    """Provides the GL implementation for mojo for a particular extension"""
    file = CWriter(filename)
    file.Write(_LICENSE)
    file.Write(_DO_NOT_EDIT_WARNING)

    for func in self.original_functions:
      if func.GetInfo("extension") != extension:
        continue
      file.Write("VISIT_GL_CALL(%s, %s, (%s), (%s))\n" %
                             (func.name, func.return_type,
                              func.MakeTypedOriginalArgString(""),
                              func.MakeOriginalArgString("")))

    file.Close()
    self.generated_cpp_filenames.append(file.filename)

def Format(generated_files):
  for filename in generated_files:
    call(["clang-format", "-i", "-style=chromium", filename])

def main(argv):
  """This is the main function."""
  parser = OptionParser()
  parser.add_option(
      "--output-dir",
      help="base directory for resulting files, under chrome/src. default is "
      "empty. Use this if you want the result stored under gen.")
  parser.add_option(
      "-v", "--verbose", action="store_true",
      help="prints more output.")

  (options, args) = parser.parse_args(args=argv)

  # Add in states and capabilites to GLState
  gl_state_valid = _NAMED_TYPE_INFO['GLState']['valid']
  for state_name in sorted(_STATES.keys()):
    state = _STATES[state_name]
    if 'extension_flag' in state:
      continue
    if 'enum' in state:
      if not state['enum'] in gl_state_valid:
        gl_state_valid.append(state['enum'])
    else:
      for item in state['states']:
        if 'extension_flag' in item:
          continue
        if not item['enum'] in gl_state_valid:
          gl_state_valid.append(item['enum'])
  for capability in _CAPABILITY_FLAGS:
    valid_value = "GL_%s" % capability['name'].upper()
    if not valid_value in gl_state_valid:
      gl_state_valid.append(valid_value)

  # This script lives under gpu/command_buffer, cd to base directory.
  os.chdir(os.path.dirname(__file__) + "/../..")
  base_dir = os.getcwd()
  gen = GLGenerator(options.verbose)
  gen.ParseGLH("gpu/command_buffer/cmd_buffer_functions.txt")

  # Support generating files under gen/
  if options.output_dir != None:
    os.chdir(options.output_dir)

  gen.WritePepperGLES2Interface("ppapi/api/ppb_opengles2.idl", False)
  gen.WritePepperGLES2Interface("ppapi/api/dev/ppb_opengles2ext_dev.idl", True)
  gen.WriteGLES2ToPPAPIBridge("ppapi/lib/gl/gles2/gles2.c")
  gen.WritePepperGLES2Implementation(
      "ppapi/shared_impl/ppb_opengles2_shared.cc")
  os.chdir(base_dir)
  gen.WriteCommandIds("gpu/command_buffer/common/gles2_cmd_ids_autogen.h")
  gen.WriteFormat("gpu/command_buffer/common/gles2_cmd_format_autogen.h")
  gen.WriteFormatTest(
    "gpu/command_buffer/common/gles2_cmd_format_test_autogen.h")
  gen.WriteGLES2InterfaceHeader(
    "gpu/command_buffer/client/gles2_interface_autogen.h")
  gen.WriteGLES2InterfaceStub(
    "gpu/command_buffer/client/gles2_interface_stub_autogen.h")
  gen.WriteGLES2InterfaceStubImpl(
      "gpu/command_buffer/client/gles2_interface_stub_impl_autogen.h")
  gen.WriteGLES2ImplementationHeader(
    "gpu/command_buffer/client/gles2_implementation_autogen.h")
  gen.WriteGLES2Implementation(
    "gpu/command_buffer/client/gles2_implementation_impl_autogen.h")
  gen.WriteGLES2ImplementationUnitTests(
      "gpu/command_buffer/client/gles2_implementation_unittest_autogen.h")
  gen.WriteGLES2TraceImplementationHeader(
      "gpu/command_buffer/client/gles2_trace_implementation_autogen.h")
  gen.WriteGLES2TraceImplementation(
      "gpu/command_buffer/client/gles2_trace_implementation_impl_autogen.h")
  gen.WriteGLES2CLibImplementation(
    "gpu/command_buffer/client/gles2_c_lib_autogen.h")
  gen.WriteCmdHelperHeader(
    "gpu/command_buffer/client/gles2_cmd_helper_autogen.h")
  gen.WriteServiceImplementation(
    "gpu/command_buffer/service/gles2_cmd_decoder_autogen.h")
  gen.WriteServiceContextStateHeader(
    "gpu/command_buffer/service/context_state_autogen.h")
  gen.WriteServiceContextStateImpl(
    "gpu/command_buffer/service/context_state_impl_autogen.h")
  gen.WriteClientContextStateHeader(
    "gpu/command_buffer/client/client_context_state_autogen.h")
  gen.WriteClientContextStateImpl(
      "gpu/command_buffer/client/client_context_state_impl_autogen.h")
  gen.WriteServiceUnitTests(
    "gpu/command_buffer/service/gles2_cmd_decoder_unittest_%d_autogen.h")
  gen.WriteServiceUnitTestsForExtensions(
    "gpu/command_buffer/service/"
    "gles2_cmd_decoder_unittest_extensions_autogen.h")
  gen.WriteServiceUtilsHeader(
    "gpu/command_buffer/service/gles2_cmd_validation_autogen.h")
  gen.WriteServiceUtilsImplementation(
    "gpu/command_buffer/service/"
    "gles2_cmd_validation_implementation_autogen.h")
  gen.WriteCommonUtilsHeader(
    "gpu/command_buffer/common/gles2_cmd_utils_autogen.h")
  gen.WriteCommonUtilsImpl(
    "gpu/command_buffer/common/gles2_cmd_utils_implementation_autogen.h")
  gen.WriteGLES2Header("gpu/GLES2/gl2chromium_autogen.h")
  mojo_gles2_prefix = "mojo/public/c/gles2/gles2_call_visitor"
  gen.WriteMojoGLCallVisitor(mojo_gles2_prefix + "_autogen.h")
  gen.WriteMojoGLCallVisitorForExtension(
      mojo_gles2_prefix + "_chromium_texture_mailbox_autogen.h",
      "CHROMIUM_texture_mailbox")
  gen.WriteMojoGLCallVisitorForExtension(
      mojo_gles2_prefix + "_chromium_sync_point_autogen.h",
      "CHROMIUM_sync_point")

  Format(gen.generated_cpp_filenames)

  if gen.errors > 0:
    print "%d errors" % gen.errors
    return 1
  return 0


if __name__ == '__main__':
  sys.exit(main(sys.argv[1:]))