third_party/WebKit/Source/build/scripts/templates/CSSPropertyDescriptor.cpp.tmpl

// Copyright 2016 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.
#include "core/css/properties/CSSPropertyDescriptor.h"

{% for api_class in api_classes %}
#include "core/css/properties/{{api_class.classname}}.h"
{% endfor %}

namespace blink {

static_assert(
    std::is_pod<CSSPropertyDescriptor>::value,
    "CSSPropertyDescriptor must be a POD to support using initializer lists.");

// This must refer to the invalid descriptor in cssPropertyDescriptors.
#define INVALID_DESCRIPTOR_INDEX {{invalid_descriptor_index}}

static constexpr CSSPropertyDescriptor cssPropertyDescriptors[] = {
    // An invalid CSSPropertyDescriptor. Must be indexed by INVALID_DESCRIPTOR_INDEX.
    {
      {% for api_method in ordered_api_method_names %}
        nullptr,
      {% endfor %}
    },
    // CSSPropertyDescriptors for all valid properties.
    {% for api_class in api_classes %}
    {
      {% for api_method_name in ordered_api_method_names %}
      {% if api_method_name in api_class.methods_for_class %}
      {{api_class.classname}}::{{api_method_name}},
      {% else %}
      nullptr,
      {% endif %}
      {% endfor %}
    },
    {% endfor %}
};

{% for api_method_name in ordered_api_method_names %}
static_assert(cssPropertyDescriptors[INVALID_DESCRIPTOR_INDEX].{{api_method_name}} == nullptr, 
              "Invalid CSSPropertyDescriptor contains non-nullptr member");
{% endfor %}

// Lookup table mapping CSSPropertyID to index in the cssPropertyDescriptors
// table
static size_t CSSDescriptorIndices[] = {
   {% for id in descriptor_indices %}
   {{id}},
   {% endfor %}
};

const CSSPropertyDescriptor& CSSPropertyDescriptor::Get(CSSPropertyID id) {
      return cssPropertyDescriptors[CSSDescriptorIndices[id]];
}

}  // namespace blink