sky/engine/build/scripts/templates/ElementFactory.cpp.tmpl

{% from "macros.tmpl" import license %}
{{ license() }}

#include "config.h"
#include "{{namespace}}ElementFactory.h"

#include "{{namespace}}Names.h"
{% for tag in tags|sort %}
#include "core/{{namespace|lower}}/{{tag.interface}}.h"
{% endfor %}
{% if fallback_interface %}
#include "core/{{namespace|lower}}/{{fallback_interface}}.h"
{% endif %}
#include "core/dom/custom/custom_element_registry.h"
#include "core/dom/Document.h"
#include "core/frame/Settings.h"
#include "gen/sky/platform/RuntimeEnabledFeatures.h"
#include "wtf/HashMap.h"

namespace blink {

using namespace {{namespace}}Names;

typedef PassRefPtr<{{namespace}}Element> (*ConstructorFunction)(
    Document&,
    bool createdByParser);

typedef HashMap<AtomicString, ConstructorFunction> FunctionMap;

static FunctionMap* g_constructors = 0;

{% for tag in tags|sort if not tag.noConstructor %}
{% filter enable_conditional(tag.Conditional) %}
static PassRefPtr<{{namespace}}Element> {{tag|symbol}}Constructor(
    Document& document,
    bool createdByParser)
{
    {% if tag.runtimeEnabled %}
    if (!RuntimeEnabledFeatures::{{tag.runtimeEnabled}}Enabled())
        return {{fallback_interface}}::create({{tag|symbol}}Tag, document);
    {% endif %}
    return {{tag.interface}}::create(
        {%- if tag.multipleTagNames %}{{tag|symbol}}Tag, {% endif -%}
        document
        {%- if tag.constructorNeedsCreatedByParser %}, createdByParser{% endif -%}
    );
}
{% endfilter %}
{% endfor %}

struct Create{{namespace}}FunctionMapData {
  const QualifiedName& tag;
  ConstructorFunction func;
};

static void create{{namespace}}FunctionMap()
{
    ASSERT(!g_constructors);
    g_constructors = new FunctionMap;
    // Empty array initializer lists are illegal [dcl.init.aggr] and will not
    // compile in MSVC. If tags list is empty, add check to skip this.
    static const Create{{namespace}}FunctionMapData data[] = {
    {% for tag in tags|sort if not tag.noConstructor %}
    {% filter enable_conditional(tag.Conditional) %}
        { {{tag|symbol}}Tag, {{tag|symbol}}Constructor },
    {% endfilter %}
    {% endfor %}
    };
    for (size_t i = 0; i < WTF_ARRAY_LENGTH(data); i++)
        g_constructors->set(data[i].tag.localName(), data[i].func);
}

PassRefPtr<Element> {{namespace}}ElementFactory::createElement(
    const AtomicString& localName,
    Document& document,
    bool createdByParser)
{
    if (!g_constructors)
        create{{namespace}}FunctionMap();
    if (ConstructorFunction function = g_constructors->get(localName))
        return function(document, createdByParser);
    return document.elementRegistry().CreateElement(document, localName);
}

} // namespace blink