Implement ReadableStream as a V8 extra

Source/bindings/scripts/v8_types.py

 # Copyright (C) 2013 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 # copyright notice, this list of conditions and the following disclaimer
@@ skipping 93 matching lines @@
     'unsigned int',
     'unsigned long',
     'unsigned short',
 ])
 CPP_SPECIAL_CONVERSION_RULES = {
     'Date': 'double',
     'Dictionary': 'Dictionary',
     'EventHandler': 'EventListener*',
     'NodeFilter': 'RefPtrWillBeRawPtr<NodeFilter>',
     'Promise': 'ScriptPromise',
+    'ReadableStream2': 'ScriptReadableStream',
     'ScriptValue': 'ScriptValue',
     # FIXME: Eliminate custom bindings for XPathNSResolver  http://crbug.com/345529
     'XPathNSResolver': 'RawPtr<XPathNSResolver>',
     'boolean': 'bool',
     'unrestricted double': 'double',
     'unrestricted float': 'float',
 }
 
 
 def cpp_type(idl_type, extended_attributes=None, raw_type=False, used_as_rvalue_type=False, used_as_variadic_argument=False, used_in_cpp_sequence=False):
@@ skipping 231 matching lines @@
                            'core/html/HTMLCollection.h',
                            'core/html/HTMLDataListOptionsCollection.h',
                            'core/html/HTMLFormControlsCollection.h',
                            'core/html/HTMLTableRowsCollection.h']),
     'NodeList': set(['bindings/core/v8/V8NodeList.h',
                      'core/dom/NameNodeList.h',
                      'core/dom/NodeList.h',
                      'core/dom/StaticNodeList.h',
                      'core/html/LabelsNodeList.h']),
     'Promise': set(['bindings/core/v8/ScriptPromise.h']),
+    'ReadableStream2': set(['core/streams/ScriptReadableStream.h']),
     'SerializedScriptValue': set(['bindings/core/v8/SerializedScriptValue.h',
                                   'bindings/core/v8/SerializedScriptValueFactory.h']),
     'ScriptValue': set(['bindings/core/v8/ScriptValue.h']),
 }
 
 
 def includes_for_type(idl_type, extended_attributes=None):
     idl_type = idl_type.preprocessed_type
     extended_attributes = extended_attributes or {}
 
@@ skipping 315 matching lines @@
     if idl_type.base_type in ['any', 'object'] or idl_type.is_callback_function:
         return IdlType('ScriptValue')
     return idl_type
 
 IdlTypeBase.preprocessed_type = property(preprocess_idl_type)
 
 
 def preprocess_idl_type_and_value(idl_type, cpp_value, extended_attributes):
     """Returns IDL type and value, with preliminary type conversions applied."""
     idl_type = idl_type.preprocessed_type
-    if idl_type.name == 'Promise':
+    if idl_type.name == 'Promise' or idl_type.name == 'ReadableStream2':
         idl_type = IdlType('ScriptValue')
     if idl_type.base_type in ['long long', 'unsigned long long']:
         # long long and unsigned long long are not representable in ECMAScript;
         # we represent them as doubles.
         is_nullable = idl_type.is_nullable
         idl_type = IdlType('double')
         if is_nullable:
             idl_type = IdlNullableType(idl_type)
         cpp_value = 'static_cast<double>(%s)' % cpp_value
     # HTML5 says that unsigned reflected attributes should be in the range
@@ skipping 266 matching lines @@
     number_of_nullable_member_types_union)
 
 
 def includes_nullable_type_union(idl_type):
     # http://heycam.github.io/webidl/#dfn-includes-a-nullable-type
     return idl_type.number_of_nullable_member_types == 1
 
 IdlTypeBase.includes_nullable_type = False
 IdlNullableType.includes_nullable_type = True
 IdlUnionType.includes_nullable_type = property(includes_nullable_type_union)