Generate mappings between CSSValueID and ComputedStyle enums.

third_party/WebKit/Source/core/css/CSSValueIDMappings.h

+// Copyright (c) 2017 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.
+
+#ifndef CSSValueIDMappings_h
+#define CSSValueIDMappings_h
+
+#include "core/CSSValueIDMappingsGenerated.h"
+
+namespace blink {
+
+template <class T>
+T cssValueIDToPlatformEnum(CSSValueID v) {
+  // By default, we use the generated mappings. For special cases, we
+  // specialize.
+  return detail::cssValueIDToPlatformEnumGenerated<T>(v);
+}
+
+template <class T>
+inline CSSValueID platformEnumToCSSValueID(T v) {
+  // By default, we use the generated mappings. For special cases, we overload.
+  return detail::platformEnumToCSSValueIDGenerated(v);
+}
+
+template <>
+inline UnicodeBidi cssValueIDToPlatformEnum(CSSValueID v) {
+  if (v == CSSValueWebkitIsolate)
+    return UnicodeBidi::kIsolate;
+  if (v == CSSValueWebkitIsolateOverride)
+    return UnicodeBidi::kIsolateOverride;
+  if (v == CSSValueWebkitPlaintext)
+    return UnicodeBidi::kPlaintext;
+  return detail::cssValueIDToPlatformEnumGenerated<UnicodeBidi>(v);
+}
+
+template <>
+inline ETextAlign cssValueIDToPlatformEnum(CSSValueID v) {
+  if (v == CSSValueWebkitAuto)  // Legacy -webkit-auto. Eqiuvalent to start.
+    return ETextAlign::kStart;
+  if (v == CSSValueInternalCenter)
+    return ETextAlign::kCenter;
+  return detail::cssValueIDToPlatformEnumGenerated<ETextAlign>(v);
+}
+
+template <>
+inline WritingMode cssValueIDToPlatformEnum(CSSValueID v) {
+  switch (v) {
+    case CSSValueHorizontalTb:
+    case CSSValueLr:
+    case CSSValueLrTb:
+    case CSSValueRl:
+    case CSSValueRlTb:
+      return WritingMode::kHorizontalTb;
+    case CSSValueVerticalRl:
+    case CSSValueTb:
+    case CSSValueTbRl:
+      return WritingMode::kVerticalRl;
+    case CSSValueVerticalLr:
+      return WritingMode::kVerticalLr;
+    default:
+      break;
+  }
+
+  NOTREACHED();
+  return WritingMode::kHorizontalTb;
+}
+
+}  // namespace blink
+
+#endif