Mojom runtime type info: New implementation for Dart.

mojo/public/tools/bindings/generators/dart_templates/module_definition.tmpl

 {#--- Constants #}
 {%-  for constant in module.constants %}
 const {{constant.kind|dart_type}} {{constant|name}} = {{constant.resolved_value}};
 {%- endfor %}
 
 {#--- Enums #}
 {%- from "enum_definition.tmpl" import enum_def %}
 {%- for enum in enums %}
 {{ enum_def(enum, typepkg, package) }}
 {%-  endfor %}
 
 {#--- Struct definitions #}
 {%- from "struct_definition.tmpl" import struct_def %}
 {%  for struct in structs %}
 {{ struct_def(struct, typepkg, package) }}
 {%- endfor -%}
 
 {#--- Union definitions #}
 {%- from "union_definition.tmpl" import union_def %}
 {%  for union in unions %}
 {{ union_def(union, typepkg, package) }}
 {%- endfor -%}
 
 {#--- Interface definitions #}
-{% import "mojom_type_macros.tmpl" as mojom_type_macros %}
 {%- for interface in interfaces -%}
 {%-   include "interface_definition.tmpl" %}
 {%- endfor %}
+
 {% if should_gen_mojom_types -%}
-{%- import "mojom_reference_macros.tmpl" as mojom_reference_macros %}
-{%- set mapping = '_mojomDesc' %}
-{%- set temp_mapping = 'map' %}
-Map<String, {{typepkg}}UserDefinedType> _initDescriptions() {
-  var {{temp_mapping}} = new HashMap<String, {{typepkg}}UserDefinedType>();
-{%- for enum in enums %}
-  {{mojom_reference_macros.registerType(temp_mapping, typepkg, package, enum)}}
-{%- endfor -%}
-{%- for struct in structs %}
-  {{mojom_reference_macros.registerType(temp_mapping, typepkg, package, struct)}}
-{%- endfor -%}
-{%- for union in unions %}
-  {{mojom_reference_macros.registerType(temp_mapping, typepkg, package, union)}}
-{%- endfor -%}
-{%- for interface in interfaces %}
-  {{mojom_reference_macros.registerType(temp_mapping, typepkg, package, interface)}}
-{%- endfor -%}
+{{typepkg}}RuntimeTypeInfo getRuntimeTypeInfo() => _runtimeTypeInfo ??
+    _initRuntimeTypeInfo();
 
-{%- for import in imports %}
-  {{import.unique_name}}.getAllMojomTypeDefinitions()
-      .forEach((String s, {{typepkg}}UserDefinedType udt) {
-    {{temp_mapping}}[s] = udt;
-  });
-{% endfor %}
-  return {{temp_mapping}};
+Map<String, {{typepkg}}UserDefinedType> getAllMojomTypeDefinitions() {
+  return getRuntimeTypeInfo().typeMap;
 }
 
-var {{mapping}};
-Map<String, {{typepkg}}UserDefinedType> getAllMojomTypeDefinitions() {
-  if ({{mapping}} == null) {
-    {{mapping}} = _initDescriptions();
-  }
-  return {{mapping}};
+var _runtimeTypeInfo;
+{{typepkg}}RuntimeTypeInfo  _initRuntimeTypeInfo() {
+  // serializedRuntimeTypeInfo contains the bytes of the Mojo serialization of
+  // a mojom_types.RuntimeTypeInfo struct describing the Mojom types in this
+  // file.
+  var serializedRuntimeTypeInfo = new Uint8List.fromList(const [{{serialized_runtime_type_info_literal}}]);
+
+  // Deserialize RuntimeTypeInfo
+  var bdata = new ByteData.view(serializedRuntimeTypeInfo.buffer);
+  var message = new bindings.Message(bdata, null, serializedRuntimeTypeInfo.length, 0);
+  _runtimeTypeInfo = {{typepkg}}RuntimeTypeInfo.deserialize(message);
+  return _runtimeTypeInfo;
 }
-{%- endif %}
+
+{%- endif %}