Support sequence<T> as return type.

lib/html/scripts/generator.py

 #!/usr/bin/python
 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 """This module provides shared functionality for systems to generate
 Dart APIs from the IDL database."""
 
 import copy
 import re
@@ skipping 533 matching lines @@
 
   def idl_type(self):
     return self._idl_type
 
   def dart_type(self):
     return self._data.dart_type or self._idl_type
 
   def native_type(self):
     return self._data.native_type or self._idl_type
 
+  def bindings_class(self):
+    return 'Dart%s' % self.idl_type()
+
+  def vector_to_dart_template_parameter(self):
+    return self.bindings_class()
+
   def requires_v8_scope(self):
     return self._data.requires_v8_scope
 
   def to_native_info(self, idl_node, interface_name):
-    cls = 'Dart%s' % self.idl_type()
+    cls = self.bindings_class()
 
     if 'Callback' in idl_node.ext_attrs:
       return '%s', 'RefPtr<%s>' % self.native_type(), cls, 'create'
 
     if self.custom_to_native():
       type = 'RefPtr<%s>' % self.native_type()
       argument_expression_template = '%s.get()'
     else:
       type = '%s*' % self.native_type()
       if isinstance(self, SVGTearOffIDLTypeInfo) and not interface_name.endswith('List'):
@@ skipping 59 matching lines @@
 
 
 class SequenceIDLTypeInfo(IDLTypeInfo):
   def __init__(self, idl_type, data, item_info):
     super(SequenceIDLTypeInfo, self).__init__(idl_type, data)
     self._item_info = item_info
 
   def dart_type(self):
     return 'List<%s>' % self._item_info.dart_type()
 
+  def vector_to_dart_template_parameter(self):
+    raise Exception('sequences of sequences are not supported yet')
+
   def to_native_info(self, idl_node, interface_name):
-    item_info = self._item_info
-    item_native_type = item_info.native_type()
-    # Ugly hack. Usually IDLs floats are treated as C++ doubles, however
-    # sequence<float> should map to Vector<float>
-    if item_native_type == 'double' and item_info.idl_type() == 'float':
-      item_native_type = 'float'
-
+    item_native_type = self._item_info.vector_to_dart_template_parameter()
     return '%s', 'Vector<%s>' % item_native_type, 'DartUtilities', 'toNativeVector<%s>' % item_native_type
 
   def pass_native_by_ref(self): return True
 
   def to_dart_conversion(self, value, interface_name=None, attributes=None):
-    return 'DartDOMWrapper::vectorToDart<Dart%s>(%s)' % (self._item_info.native_type(), value)
+    return 'DartDOMWrapper::vectorToDart<%s>(%s)' % (self._item_info.vector_to_dart_template_parameter(), value)
 
   def conversion_includes(self):
     return self._item_info.conversion_includes()
 
 
 class DOMStringArrayTypeInfo(SequenceIDLTypeInfo):
   def __init__(self, data, item_info):
     super(DOMStringArrayTypeInfo, self).__init__('DOMString[]', data, item_info)
 
   def to_native_info(self, idl_node, interface_name):
     return '%s', 'RefPtr<DOMStringList>', 'DartDOMStringList', 'toNative'
 
   def pass_native_by_ref(self): return False
 
 
 class PrimitiveIDLTypeInfo(IDLTypeInfo):
   def __init__(self, idl_type, data):
     super(PrimitiveIDLTypeInfo, self).__init__(idl_type, data)
 
+  def vector_to_dart_template_parameter(self):
+    # Ugly hack. Usually IDLs floats are treated as C++ doubles, however
+    # sequence<float> should map to Vector<float>
+    if self.idl_type() == 'float': return 'float'
+    return self.native_type()
+
   def to_native_info(self, idl_node, interface_name):
     type = self.native_type()
     if type == 'SerializedScriptValue':
       type = 'RefPtr<%s>' % type
     if type == 'String':
       type = 'DartStringAdapter'
     return '%s', type, 'DartUtilities', 'dartTo%s' % self._capitalized_native_type()
 
   def parameter_type(self):
     if self.native_type() == 'String':
@@ skipping 196 matching lines @@
     if match:
       if type_name == 'DOMString[]':
         return DOMStringArrayTypeInfo(TypeData('Sequence'), self.TypeInfo('DOMString'))
       item_info = self.TypeInfo(match.group(1) or match.group(2))
       return SequenceIDLTypeInfo(type_name, TypeData('Sequence'), item_info)
     if not type_name in _idl_type_registry:
       return InterfaceIDLTypeInfo(type_name, TypeData('Interface'))
     type_data = _idl_type_registry.get(type_name)
     class_name = '%sIDLTypeInfo' % type_data.clazz
     return globals()[class_name](type_name, type_data)