| # 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 |
| # in the documentation and/or other materials provided with the |
| # distribution. |
| # * Neither the name of Google Inc. nor the names of its |
| # contributors may be used to endorse or promote products derived from |
| # this software without specific prior written permission. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| """Functions for type handling and type conversion (Blink/C++ <-> Dart:HTML). |
| |
| Extends IdlType and IdlUnionType with C++-specific properties, methods, and |
| class methods. |
| |
| Spec: |
| http://www.w3.org/TR/WebIDL/#es-type-mapping |
| |
| Design doc: http://www.chromium.org/developers/design-documents/idl-compiler |
| """ |
| |
| import posixpath |
| from idl_types import IdlTypeBase, IdlType, IdlUnionType, TYPE_NAMES, IdlArrayOrSequenceType |
| |
| import dart_attributes |
| from dart_utilities import DartUtilities |
| from v8_globals import includes |
| |
| |
| ################################################################################ |
| # CPP -specific handling of IDL types for Dart:Blink |
| ################################################################################ |
| |
| NON_WRAPPER_TYPES = frozenset([ |
| 'CompareHow', |
| 'DartValue', |
| 'MediaQueryListListener', |
| 'NodeFilter', |
| ]) |
| TYPED_ARRAYS = { |
| # (cpp_type, dart_type), used by constructor templates |
| 'ArrayBuffer': (None, 'ByteBuffer'), |
| 'ArrayBufferView': (None, 'ByteData'), |
| 'Float32Array': ('float', 'Float32List'), |
| 'Float64Array': ('double', 'Float64List'), |
| 'Int8Array': ('signed char', 'Int8List'), |
| 'Int16Array': ('short', 'Int16List'), |
| 'Int32Array': ('int', 'Int32List'), |
| 'Uint8Array': ('unsigned char', 'Uint8List'), |
| 'Uint8ClampedArray': ('unsigned char', 'Uint8ClampedList'), |
| 'Uint16Array': ('unsigned short', 'Uint16List'), |
| 'Uint32Array': ('unsigned int', 'Uint32List'), |
| } |
| |
| |
| IdlTypeBase.is_typed_array_type = property( |
| lambda self: self.base_type in TYPED_ARRAYS) |
| |
| |
| IdlType.is_wrapper_type = property( |
| lambda self: (self.is_interface_type and |
| self.base_type not in NON_WRAPPER_TYPES)) |
| |
| |
| ################################################################################ |
| # C++ types |
| ################################################################################ |
| |
| CPP_TYPE_SAME_AS_IDL_TYPE = set([ |
| 'double', |
| 'float', |
| 'long long', |
| 'unsigned long long', |
| ]) |
| CPP_INT_TYPES = set([ |
| 'byte', |
| 'long', |
| 'short', |
| ]) |
| CPP_UNSIGNED_TYPES = set([ |
| 'octet', |
| 'unsigned int', |
| 'unsigned long', |
| 'unsigned short', |
| ]) |
| CPP_SPECIAL_CONVERSION_RULES = { |
| 'CompareHow': 'Range::CompareHow', |
| 'Date': 'double', |
| 'MediaQueryListListener': 'RefPtrWillBeRawPtr<MediaQueryListListener>', |
| 'Promise': 'ScriptPromise', |
| # FIXME: Eliminate custom bindings for XPathNSResolver http://crbug.com/345529 |
| 'XPathNSResolver': 'RefPtrWillBeRawPtr<XPathNSResolver>', |
| 'boolean': 'bool', |
| 'unrestricted double': 'double', |
| 'unrestricted float': 'float', |
| # Pass these by value, not pointer. |
| 'Color': 'SkColor', |
| 'RSTransform': 'RSTransform', |
| # These direct conversions appear to be working around |
| # dart_value_to_cpp_value using CPP_SPECIAL_CONVERSION_RULES directly |
| # instead of calling cpp_type. |
| 'Float32List': 'Float32List', |
| 'Offset': 'Offset', |
| 'Point': 'Point', |
| 'Rect': 'Rect', |
| 'Size': 'Size', |
| 'MojoDataPipeConsumer': 'mojo::ScopedDataPipeConsumerHandle', |
| 'TileMode': 'SkShader::TileMode', |
| 'TransferMode': 'SkXfermode::Mode', |
| 'FilterQuality': 'SkFilterQuality', |
| 'PaintingStyle': 'SkPaint::Style', |
| } |
| |
| |
| 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): |
| """Returns C++ type corresponding to IDL type. |
| |
| |idl_type| argument is of type IdlType, while return value is a string |
| |
| Args: |
| idl_type: |
| IdlType |
| raw_type: |
| bool, True if idl_type's raw/primitive C++ type should be returned. |
| used_as_rvalue_type: |
| bool, True if the C++ type is used as an argument or the return |
| type of a method. |
| used_as_variadic_argument: |
| bool, True if the C++ type is used as a variadic argument of a method. |
| used_in_cpp_sequence: |
| bool, True if the C++ type is used as an element of a container. |
| Containers can be an array, a sequence or a dictionary. |
| """ |
| extended_attributes = extended_attributes or {} |
| idl_type = idl_type.preprocessed_type |
| |
| # Composite types |
| native_array_element_type = idl_type.native_array_element_type |
| if native_array_element_type: |
| return cpp_template_type('Vector', native_array_element_type.cpp_type_args(used_in_cpp_sequence=True)) |
| |
| # Simple types |
| base_idl_type = idl_type.base_type |
| |
| if base_idl_type in CPP_TYPE_SAME_AS_IDL_TYPE: |
| return base_idl_type |
| if base_idl_type in CPP_INT_TYPES: |
| return 'int' |
| if base_idl_type in CPP_UNSIGNED_TYPES: |
| return 'unsigned' |
| if base_idl_type in CPP_SPECIAL_CONVERSION_RULES: |
| return CPP_SPECIAL_CONVERSION_RULES[base_idl_type] |
| |
| if base_idl_type in NON_WRAPPER_TYPES: |
| return ('PassRefPtr<%s>' if used_as_rvalue_type else 'RefPtr<%s>') % base_idl_type |
| if base_idl_type in ('DOMString', 'ByteString', 'ScalarValueString'): |
| return 'String' |
| |
| if idl_type.is_typed_array_type and raw_type: |
| return 'RefPtr<%s>' % base_idl_type |
| if idl_type.is_callback_interface: |
| return 'OwnPtr<%s>' % base_idl_type |
| if idl_type.is_interface_type: |
| implemented_as_class = idl_type.implemented_as |
| if raw_type: |
| return implemented_as_class + '*' |
| new_type = 'Member' if used_in_cpp_sequence else 'RawPtr' |
| ptr_type = 'PassRefPtr' if used_as_rvalue_type else 'RefPtr' |
| return cpp_template_type(ptr_type, implemented_as_class) |
| |
| # Default, assume native type is a pointer with same type name as idl type |
| return base_idl_type + '*' |
| |
| |
| def cpp_type_union(idl_type, extended_attributes=None, used_as_rvalue_type=False, will_be_in_heap_object=False): |
| return (member_type.cpp_type for member_type in idl_type.member_types) |
| |
| |
| # Allow access as idl_type.cpp_type if no arguments |
| IdlTypeBase.cpp_type = property(cpp_type) |
| IdlTypeBase.cpp_type_args = cpp_type |
| IdlUnionType.cpp_type = property(cpp_type_union) |
| IdlUnionType.cpp_type_args = cpp_type_union |
| |
| |
| IdlTypeBase.native_array_element_type = None |
| IdlArrayOrSequenceType.native_array_element_type = property( |
| lambda self: self.element_type) |
| |
| |
| def cpp_template_type(template, inner_type): |
| """Returns C++ template specialized to type, with space added if needed.""" |
| if inner_type.endswith('>'): |
| format_string = '{template}<{inner_type} >' |
| else: |
| format_string = '{template}<{inner_type}>' |
| return format_string.format(template=template, inner_type=inner_type) |
| |
| |
| def dart_type(interface_name): |
| return 'Dart' + str(interface_name) |
| |
| |
| # [ImplementedAs] |
| # This handles [ImplementedAs] on interface types, not [ImplementedAs] in the |
| # interface being generated. e.g., given: |
| # Foo.idl: interface Foo {attribute Bar bar}; |
| # Bar.idl: [ImplementedAs=Zork] interface Bar {}; |
| # when generating bindings for Foo, the [ImplementedAs] on Bar is needed. |
| # This data is external to Foo.idl, and hence computed as global information in |
| # compute_interfaces_info.py to avoid having to parse IDLs of all used interfaces. |
| IdlType.implemented_as_interfaces = {} |
| |
| |
| def implemented_as(idl_type): |
| base_idl_type = idl_type.base_type |
| if base_idl_type in IdlType.implemented_as_interfaces: |
| return IdlType.implemented_as_interfaces[base_idl_type] |
| return base_idl_type |
| |
| |
| IdlType.implemented_as = property(implemented_as) |
| |
| IdlType.set_implemented_as_interfaces = classmethod( |
| lambda cls, new_implemented_as_interfaces: |
| cls.implemented_as_interfaces.update(new_implemented_as_interfaces)) |
| |
| |
| |
| ################################################################################ |
| # Includes |
| ################################################################################ |
| |
| def includes_for_cpp_class(class_name, relative_dir_posix): |
| return set([posixpath.join('bindings', relative_dir_posix, class_name + '.h')]) |
| |
| # TODO(terry): Will we need this group header for dart:blink? |
| INCLUDES_FOR_TYPE = { |
| 'object': set(), |
| 'CompareHow': set(), |
| 'MediaQueryListListener': set(['sky/engine/core/css/MediaQueryListListener.h']), |
| 'NodeList': set(['sky/engine/core/dom/NodeList.h', |
| 'sky/engine/core/dom/StaticNodeList.h']), |
| 'DartValue': set(['sky/engine/tonic/dart_value.h']), |
| 'MojoDataPipeConsumer': set(['sky/engine/tonic/mojo_converter.h']), |
| } |
| |
| |
| def includes_for_type(idl_type): |
| idl_type = idl_type.preprocessed_type |
| |
| # Composite types |
| if idl_type.native_array_element_type: |
| return includes_for_type(idl_type) |
| |
| # Simple types |
| base_idl_type = idl_type.base_type |
| if base_idl_type in INCLUDES_FOR_TYPE: |
| return INCLUDES_FOR_TYPE[base_idl_type] |
| if idl_type.is_basic_type: |
| return set() |
| if idl_type.is_typed_array_type: |
| # Typed array factory methods are already provided by DartUtilities.h. |
| return set([]) |
| if base_idl_type.endswith('ConstructorConstructor'): |
| # FIXME: rename to NamedConstructor |
| # FIXME: replace with a [NamedConstructorAttribute] extended attribute |
| # Ending with 'ConstructorConstructor' indicates a named constructor, |
| # and these do not have header files, as they are part of the generated |
| # bindings for the interface |
| return set() |
| if base_idl_type.endswith('Constructor'): |
| # FIXME: replace with a [ConstructorAttribute] extended attribute |
| base_idl_type = idl_type.constructor_type_name |
| if base_idl_type not in component_dir: |
| return set() |
| return set(['gen/sky/bindings/Dart%s.h' % base_idl_type]) |
| |
| IdlType.includes_for_type = property(includes_for_type) |
| IdlUnionType.includes_for_type = property( |
| lambda self: set.union(*[includes_for_type(member_type) |
| for member_type in self.member_types])) |
| |
| |
| def add_includes_for_type(idl_type): |
| includes.update(idl_type.includes_for_type) |
| |
| IdlTypeBase.add_includes_for_type = add_includes_for_type |
| IdlUnionType.add_includes_for_type = add_includes_for_type |
| |
| |
| def includes_for_interface(interface_name): |
| return IdlType(interface_name).includes_for_type |
| |
| |
| def add_includes_for_interface(interface_name): |
| includes.update(includes_for_interface(interface_name)) |
| |
| |
| component_dir = {} |
| |
| |
| def set_component_dirs(new_component_dirs): |
| component_dir.update(new_component_dirs) |
| |
| |
| ################################################################################ |
| # Dart -> C++ |
| ################################################################################ |
| |
| # TODO(terry): Need to fix to handle getter/setters for onEvent. |
| DART_FIX_ME = 'DART_UNIMPLEMENTED(/* Conversion unimplemented*/);' |
| |
| def pass_by_value_format(typename, null_check="{null_check}"): |
| return 'DartConverter<%s>::FromArguments%s(args, {index}, exception)' % (typename, null_check) |
| |
| # For a given IDL type, the DartHandle to C++ conversion. |
| DART_TO_CPP_VALUE = { |
| # Basic |
| 'Date': 'DartUtilities::dartToDate(args, {index}, exception)', |
| 'DOMString': 'DartConverter<String>::FromArguments{null_check}(args, {index}, exception, {auto_scope})', |
| 'ByteString': 'DartUtilities::dartToByteString{null_check}(args, {index}, exception, {auto_scope})', |
| 'ScalarValueString': 'DartUtilities::dartToScalarValueString{null_check}(args, {index}, exception, {auto_scope})', |
| 'boolean': 'DartConverter<bool>::FromArguments(args, {index}, exception)', |
| 'float': 'static_cast<float>(DartConverter<double>::FromArguments(args, {index}, exception))', |
| 'unrestricted float': 'static_cast<float>(DartConverter<double>::FromArguments(args, {index}, exception))', |
| 'double': 'DartConverter<double>::FromArguments(args, {index}, exception)', |
| 'unrestricted double': 'DartConverter<double>::FromArguments(args, {index}, exception)', |
| # FIXME(vsm): Inconsistent with V8. |
| 'byte': 'DartConverter<unsigned>::FromArguments(args, {index}, exception)', |
| 'octet': 'DartConverter<unsigned>::FromArguments(args, {index}, exception)', |
| 'short': 'DartConverter<int>::FromArguments(args, {index}, exception)', |
| 'unsigned short': 'DartConverter<unsigned>::FromArguments(args, {index}, exception)', |
| 'long': 'DartConverter<int>::FromArguments(args, {index}, exception)', |
| 'unsigned long': 'DartConverter<unsigned>::FromArguments(args, {index}, exception)', |
| 'long long': 'DartConverter<long long>::FromArguments(args, {index}, exception)', |
| 'unsigned long long': 'DartConverter<unsigned long long>::FromArguments(args, {index}, exception)', |
| # Interface types |
| 'CompareHow': 'static_cast<Range::CompareHow>(0) /* FIXME, DART_TO_CPP_VALUE[CompareHow] */', |
| 'MediaQueryListListener': 'nullptr /* FIXME, DART_TO_CPP_VALUE[MediaQueryListener] */', |
| 'NodeFilter': 'nullptr /* FIXME, DART_TO_CPP_VALUE[NodeFilter] */', |
| 'Promise': 'DartUtilities::dartToScriptPromise{null_check}(args, {index})', |
| 'DartValue': 'DartConverter<DartValue*>::FromArguments(args, {index}, exception)', |
| # FIXME(vsm): Why don't we have an entry for Window? V8 does. |
| # I think I removed this as the Window object is more special in V8 - it's the |
| # global context as well. Do we need to special case it? |
| 'XPathNSResolver': 'nullptr /* FIXME, DART_TO_CPP_VALUE[XPathNSResolver] */', |
| # FIXME(vsm): This is an enum type (defined in StorageQuota.idl). |
| # We should handle it automatically, but map to a String for now. |
| 'StorageType': 'DartUtilities::dartToString(args, {index}, exception, {auto_scope})', |
| |
| # Pass-by-value types. |
| 'Color': pass_by_value_format('CanvasColor'), |
| 'Float32List': pass_by_value_format('Float32List'), |
| 'Offset': pass_by_value_format('Offset'), |
| 'Point': pass_by_value_format('Point'), |
| 'RSTransform': pass_by_value_format('RSTransform'), |
| 'Rect': pass_by_value_format('Rect'), |
| 'Size': pass_by_value_format('Size'), |
| 'TileMode': pass_by_value_format('TileMode', ''), |
| 'TransferMode': pass_by_value_format('TransferMode', ''), |
| 'FilterQuality': pass_by_value_format('FilterQuality', ''), |
| 'PaintingStyle': pass_by_value_format('PaintingStyle', ''), |
| 'MojoDataPipeConsumer': pass_by_value_format('mojo::ScopedDataPipeConsumerHandle'), |
| } |
| |
| def dart_value_to_cpp_value(idl_type, extended_attributes, variable_name, |
| null_check, has_type_checking_interface, |
| index, auto_scope=True): |
| # Composite types |
| native_array_element_type = idl_type.native_array_element_type |
| if native_array_element_type: |
| return dart_value_to_cpp_value_array_or_sequence(native_array_element_type, variable_name, index) |
| |
| # Simple types |
| idl_type = idl_type.preprocessed_type |
| add_includes_for_type(idl_type) |
| base_idl_type = idl_type.base_type |
| implemented_as = idl_type.implemented_as |
| |
| if 'EnforceRange' in extended_attributes: |
| arguments = ', '.join([variable_name, 'EnforceRange', 'exceptionState']) |
| elif idl_type.is_integer_type: # NormalConversion |
| arguments = ', '.join([variable_name, 'es']) |
| else: |
| arguments = variable_name |
| |
| if base_idl_type in CPP_SPECIAL_CONVERSION_RULES: |
| implemented_as = CPP_SPECIAL_CONVERSION_RULES[base_idl_type] |
| |
| if base_idl_type in DART_TO_CPP_VALUE: |
| cpp_expression_format = DART_TO_CPP_VALUE[base_idl_type] |
| elif idl_type.is_typed_array_type: |
| # FIXME(vsm): V8 generates a type check here as well. Do we need one? |
| # FIXME(vsm): When do we call the externalized version? E.g., see |
| # bindings/dart/custom/DartWaveShaperNodeCustom.cpp - it calls |
| # DartUtilities::dartToExternalizedArrayBufferView instead. |
| # V8 always converts null here |
| cpp_expression_format = ('DartUtilities::dartTo{idl_type}WithNullCheck(args, {index}, exception)') |
| elif idl_type.is_callback_interface: |
| cpp_expression_format = ('Dart{idl_type}::create{null_check}(args, {index}, exception)') |
| else: |
| cpp_expression_format = ('DartConverter<{implemented_as}*>::FromArguments{null_check}(args, {index}, exception)') |
| |
| # We allow the calling context to force a null check to handle |
| # some cases that require calling context info. V8 handles all |
| # of this differently, and we may wish to reconsider this approach |
| check_string = '' |
| if null_check or allow_null(idl_type, extended_attributes, |
| has_type_checking_interface): |
| check_string = 'WithNullCheck' |
| elif allow_empty(idl_type, extended_attributes): |
| check_string = 'WithEmptyCheck' |
| return cpp_expression_format.format(null_check=check_string, |
| arguments=arguments, |
| index=index, |
| idl_type=base_idl_type, |
| implemented_as=implemented_as, |
| auto_scope=DartUtilities.bool_to_cpp(auto_scope)) |
| |
| |
| # Special mappings for arrays of types. |
| INNER_TYPE_FOR_ARRAY = { |
| 'SkColor': 'CanvasColor' |
| } |
| |
| def dart_value_to_cpp_value_array_or_sequence(native_array_element_type, variable_name, index): |
| # Index is None for setters, index (starting at 0) for method arguments, |
| # and is used to provide a human-readable exception message |
| if index is None: |
| index = 0 # special case, meaning "setter" |
| this_cpp_type = native_array_element_type.cpp_type |
| if this_cpp_type in INNER_TYPE_FOR_ARRAY: |
| this_cpp_type = INNER_TYPE_FOR_ARRAY[this_cpp_type] |
| expression_format = '{variable_name} = DartConverter<Vector<{cpp_type}>>::FromArguments(args, {index}, exception)' |
| expression = expression_format.format(native_array_element_type=native_array_element_type.name, |
| cpp_type=this_cpp_type, index=index, |
| variable_name=variable_name) |
| return expression |
| |
| |
| def dart_value_to_local_cpp_value(idl_type, extended_attributes, variable_name, |
| null_check, has_type_checking_interface, |
| index=None, auto_scope=True): |
| """Returns an expression that converts a Dart value to a C++ value as a local value.""" |
| idl_type = idl_type.preprocessed_type |
| |
| cpp_value = dart_value_to_cpp_value( |
| idl_type, extended_attributes, variable_name, |
| null_check, has_type_checking_interface, |
| index, auto_scope) |
| |
| return cpp_value |
| |
| IdlTypeBase.dart_value_to_local_cpp_value = dart_value_to_local_cpp_value |
| #IdlUnionType.dart_value_to_local_cpp_value = dart_value_to_local_cpp_value |
| |
| |
| # Insure that we don't use C++ reserved names. Today on default is a problem. |
| def check_reserved_name(name): |
| return 'default_value' if (name == 'default') else name |
| |
| |
| ################################################################################ |
| # C++ -> V8 |
| ################################################################################ |
| |
| def preprocess_idl_type(idl_type): |
| if idl_type.is_enum: |
| # Enumerations are internally DOMStrings |
| return IdlType('DOMString') |
| if (idl_type.name == 'Any' or idl_type.is_callback_function): |
| return IdlType('DartValue') |
| return idl_type |
| |
| IdlTypeBase.preprocessed_type = property(preprocess_idl_type) |
| IdlUnionType.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': |
| idl_type = IdlType('ScriptPromise') |
| |
| # FIXME(vsm): V8 maps 'long long' and 'unsigned long long' to double |
| # as they are not representable in ECMAScript. Should we do the same? |
| |
| return idl_type, cpp_value |
| |
| |
| IDL_TO_DART_TYPE = { |
| 'DOMString': 'String', |
| 'DartValue': 'dynamic', |
| 'boolean': 'bool', |
| 'void': 'void', |
| 'unsigned long': 'int', |
| 'MojoDataPipeConsumer': 'int', |
| } |
| |
| def idl_type_to_dart_type(idl_type): |
| preprocessed_type = str(idl_type.preprocessed_type) |
| dart_type = IDL_TO_DART_TYPE.get(preprocessed_type) |
| if dart_type: |
| return dart_type |
| if idl_type.is_integer_type: |
| return 'int' |
| if idl_type.is_numeric_type: |
| return 'double' |
| native_array_element_type = idl_type.native_array_element_type |
| if native_array_element_type: |
| return 'List<%s>' % idl_type_to_dart_type(native_array_element_type) |
| assert preprocessed_type |
| assert idl_type.is_interface_type, "Missing dart type mapping for '%s'" % preprocessed_type |
| return preprocessed_type |
| |
| |
| DART_DEFAULT_VALUES_BY_TYPE = { |
| 'String': '""', |
| 'bool': 'false', |
| 'double': '0.0', |
| 'dynamic': 'null', |
| 'int': '0', |
| } |
| |
| def dart_default_value(dart_type, argument=None): |
| # TODO(eseidel): Maybe take the idl_type instead? |
| # if argument.default_value: |
| # return argument.default_value |
| default_value = DART_DEFAULT_VALUES_BY_TYPE.get(dart_type) |
| if default_value: |
| return default_value |
| idl_type = argument.idl_type |
| if idl_type.is_interface_type: |
| return 'null' |
| if idl_type.native_array_element_type: |
| return 'null' |
| assert default_value, "Missing default value mapping for '%s'" % dart_type |
| |
| |
| def dart_conversion_type(idl_type, extended_attributes): |
| """Returns Dart conversion type, adding any additional includes. |
| |
| The Dart conversion type is used to select the C++ -> Dart conversion function |
| or setDart*ReturnValue function; it can be an idl_type, a cpp_type, or a |
| separate name for the type of conversion (e.g., 'DOMWrapper'). |
| """ |
| extended_attributes = extended_attributes or {} |
| |
| # Composite types |
| native_array_element_type = idl_type.native_array_element_type |
| if native_array_element_type: |
| if native_array_element_type.is_interface_type: |
| add_includes_for_type(native_array_element_type) |
| return 'array' |
| |
| # Simple types |
| base_idl_type = idl_type.base_type |
| # Basic types, without additional includes |
| if base_idl_type in CPP_INT_TYPES or base_idl_type == 'long long': |
| return 'int' |
| if base_idl_type in CPP_UNSIGNED_TYPES or base_idl_type == 'unsigned long long': |
| return 'unsigned' |
| if idl_type.is_string_type: |
| if idl_type.is_nullable: |
| return 'StringOrNull' |
| if 'TreatReturnedNullStringAs' not in extended_attributes: |
| return 'DOMString' |
| treat_returned_null_string_as = extended_attributes['TreatReturnedNullStringAs'] |
| if treat_returned_null_string_as == 'Null': |
| return 'StringOrNull' |
| if treat_returned_null_string_as == 'Undefined': |
| return 'StringOrUndefined' |
| raise 'Unrecognized TreatReturnNullStringAs value: "%s"' % treat_returned_null_string_as |
| if idl_type.is_basic_type or base_idl_type == 'DartValue': |
| return base_idl_type |
| |
| # Data type with potential additional includes |
| add_includes_for_type(idl_type) |
| if base_idl_type in DART_SET_RETURN_VALUE: # Special dartSetReturnValue treatment |
| return base_idl_type |
| |
| # Typed arrays don't have special Dart* classes for Dart. |
| if idl_type.is_typed_array_type: |
| if base_idl_type == 'ArrayBuffer': |
| return 'ArrayBuffer' |
| else: |
| return 'TypedList' |
| |
| # Pointer type |
| return 'DOMWrapper' |
| |
| IdlTypeBase.dart_conversion_type = dart_conversion_type |
| |
| |
| DART_SET_RETURN_VALUE = { |
| 'boolean': 'DartConverter<bool>::SetReturnValue(args, {cpp_value})', |
| 'int': 'DartConverter<int>::SetReturnValue(args, {cpp_value})', |
| 'unsigned': 'DartConverter<unsigned>::SetReturnValue(args, {cpp_value})', |
| 'DOMString': 'DartConverter<String>::SetReturnValue(args, {cpp_value}, {auto_scope})', |
| # FIXME(terry): Need to handle checking to byte values > 255 throwing exception. |
| 'ByteString': 'DartUtilities::setDartByteStringReturnValue(args, {cpp_value}, {auto_scope})', |
| # FIXME(terry): Need to make valid unicode; match UTF-16 to U+FFFD REPLACEMENT CHARACTER. |
| 'ScalarValueString': 'DartUtilities::setDartScalarValueStringReturnValue(args, {cpp_value}, {auto_scope})', |
| # [TreatNullReturnValueAs] |
| 'StringOrNull': 'DartConverter<String>::SetReturnValueWithNullCheck(args, {cpp_value}, {auto_scope})', |
| # FIXME(vsm): How should we handle undefined? |
| 'StringOrUndefined': 'DartConverter<String>::SetReturnValueWithNullCheck(args, {cpp_value}, {auto_scope})', |
| 'void': '', |
| # We specialize these as well in Dart. |
| 'float': 'DartConverter<double>::SetReturnValue(args, {cpp_value})', |
| 'unrestricted float': 'DartConverter<double>::SetReturnValue(args, {cpp_value})', |
| 'double': 'DartConverter<double>::SetReturnValue(args, {cpp_value})', |
| 'unrestricted double': 'DartConverter<double>::SetReturnValue(args, {cpp_value})', |
| # No special function, but instead convert value to Dart_Handle |
| # and then use general Dart_SetReturnValue. |
| 'array': 'Dart_SetReturnValue(args, {cpp_value})', |
| 'Date': 'Dart_SetReturnValue(args, {cpp_value})', |
| 'ScriptPromise': 'Dart_SetReturnValue(args, {cpp_value})', |
| 'DartValue': 'DartConverter<DartValue*>::SetReturnValue(args, {cpp_value})', |
| # DOMWrapper |
| # TODO(terry): Remove ForMainWorld stuff. |
| 'DOMWrapperForMainWorld': DART_FIX_ME, |
| # FIXME(vsm): V8 has a fast path. Do we? |
| 'DOMWrapperFast': '/*DOMWrapperFast*/ DartConverter<{implemented_as}*>::SetReturnValue(args, WTF::getPtr({cpp_value}), {auto_scope})', |
| 'DOMWrapperDefault': '/*DOMWrapperDefault*/ DartConverter<{implemented_as}*>::SetReturnValue(args, WTF::getPtr({cpp_value}), {auto_scope})', |
| # Typed arrays don't have special Dart* classes for Dart. |
| 'ArrayBuffer': 'Dart_SetReturnValue(args, DartUtilities::arrayBufferToDart({cpp_value}))', |
| 'TypedList': 'Dart_SetReturnValue(args, DartUtilities::arrayBufferViewToDart({cpp_value}))', |
| 'Color': 'DartConverter<CanvasColor>::SetReturnValue(args, {cpp_value})', |
| 'Float32List': 'DartConverter<Float32List>::SetReturnValue(args, {cpp_value})', |
| } |
| |
| |
| def dart_set_return_value(idl_type, cpp_value, |
| extended_attributes=None, script_wrappable='', |
| release=False, for_main_world=False, |
| auto_scope=True): |
| """Returns a statement that converts a C++ value to a Dart value and sets it as a return value. |
| |
| """ |
| def dom_wrapper_conversion_type(): |
| if not script_wrappable: |
| return 'DOMWrapperDefault' |
| if for_main_world: |
| return 'DOMWrapperForMainWorld' |
| return 'DOMWrapperFast' |
| |
| idl_type, cpp_value = preprocess_idl_type_and_value(idl_type, cpp_value, extended_attributes) |
| this_dart_conversion_type = idl_type.dart_conversion_type(extended_attributes) |
| # SetReturn-specific overrides |
| if this_dart_conversion_type in ['Date', 'ScriptPromise', 'SerializedScriptValue', 'array']: |
| # Convert value to Dart and then use general Dart_SetReturnValue |
| # FIXME(vsm): Why do we differ from V8 here? It doesn't have a |
| # creation_context. |
| creation_context = '' |
| if this_dart_conversion_type == 'array': |
| # FIXME: This is not right if the base type is a primitive, DOMString, etc. |
| # What is the right check for base type? |
| base_type = str(idl_type.element_type) |
| if base_type not in DART_TO_CPP_VALUE: |
| if base_type == 'None': |
| raise Exception('Unknown base type for ' + str(idl_type)) |
| creation_context = '<Dart%s>' % base_type |
| if idl_type.is_nullable: |
| creation_context = 'Nullable' + creation_context |
| |
| cpp_value = idl_type.cpp_value_to_dart_value(cpp_value, creation_context=creation_context, |
| extended_attributes=extended_attributes) |
| if this_dart_conversion_type == 'DOMWrapper': |
| this_dart_conversion_type = dom_wrapper_conversion_type() |
| |
| format_string = DART_SET_RETURN_VALUE[this_dart_conversion_type] |
| |
| if release: |
| cpp_value = '%s.release()' % cpp_value |
| statement = format_string.format(cpp_value=cpp_value, |
| implemented_as=idl_type.implemented_as, |
| type_name=idl_type.name, |
| script_wrappable=script_wrappable, |
| auto_scope=DartUtilities.bool_to_cpp(auto_scope)) |
| return statement |
| |
| |
| def dart_set_return_value_union(idl_type, cpp_value, extended_attributes=None, |
| script_wrappable='', release=False, for_main_world=False, |
| auto_scope=True): |
| """ |
| release: can be either False (False for all member types) or |
| a sequence (list or tuple) of booleans (if specified individually). |
| """ |
| |
| return [ |
| # FIXME(vsm): Why do we use 'result' instead of cpp_value as V8? |
| member_type.dart_set_return_value('result' + str(i), |
| extended_attributes, |
| script_wrappable, |
| release and release[i], |
| for_main_world, |
| auto_scope) |
| for i, member_type in |
| enumerate(idl_type.member_types)] |
| |
| IdlTypeBase.dart_set_return_value = dart_set_return_value |
| IdlUnionType.dart_set_return_value = dart_set_return_value_union |
| |
| IdlType.release = property(lambda self: self.is_interface_type) |
| IdlUnionType.release = property( |
| lambda self: [member_type.is_interface_type |
| for member_type in self.member_types]) |
| |
| |
| CPP_VALUE_TO_DART_VALUE = { |
| # Built-in types |
| # FIXME(vsm): V8 uses DateOrNull - do we need a null check? |
| 'Date': 'DartUtilities::dateToDart({cpp_value})', |
| 'DOMString': 'DartConverter<String>::ToDart(DartState::Current(), {cpp_value})', |
| 'boolean': 'DartConverter<bool>::ToDart({cpp_value})', |
| 'int': 'DartConverter<int>::ToDart({cpp_value})', |
| 'unsigned': 'DartConverter<unsigned>::ToDart({cpp_value})', |
| 'float': 'DartConverter<double>::ToDart({cpp_value})', |
| 'unrestricted float': 'DartConverter<double>::ToDart({cpp_value})', |
| 'double': 'DartConverter<double>::ToDart({cpp_value})', |
| 'unrestricted double': 'DartConverter<double>::ToDart({cpp_value})', |
| # FIXME(vsm): Dart_Null? |
| 'void': '', |
| # We need to generate the NullCheck version in some cases. |
| 'ScriptPromise': 'DartUtilities::scriptPromiseToDart({cpp_value})', |
| 'DartValue': 'DartConverter<DartValue*>::ToDart({cpp_value})', |
| # General |
| 'array': 'VectorToDart({cpp_value})', |
| 'DOMWrapper': 'DartConverter<{cpp_type}>::ToDart({cpp_value})', |
| } |
| |
| |
| def cpp_value_to_dart_value(idl_type, cpp_value, creation_context='', extended_attributes=None): |
| """Returns an expression that converts a C++ value to a Dart value.""" |
| # the isolate parameter is needed for callback interfaces |
| idl_type, cpp_value = preprocess_idl_type_and_value(idl_type, cpp_value, extended_attributes) |
| this_dart_conversion_type = idl_type.dart_conversion_type(extended_attributes) |
| format_string = CPP_VALUE_TO_DART_VALUE[this_dart_conversion_type] |
| statement = format_string.format(cpp_value=cpp_value, cpp_type=cpp_type(idl_type, raw_type=True)) |
| return statement |
| |
| IdlTypeBase.cpp_value_to_dart_value = cpp_value_to_dart_value |
| |
| # FIXME(leafp) This is horrible, we should do better, but currently this is hard to do |
| # in a nice way. Best solution might be to extend DartStringAdapter to accomodate |
| # initialization from constant strings, but better to do that once we're stable |
| # on the bots so we can track any performance regression |
| CPP_LITERAL_TO_DART_VALUE = { |
| 'DOMString': {'nullptr': 'String()', |
| 'String("")': 'String(StringImpl::empty())', |
| '*': 'DartUtilities::dartToString(DartUtilities::stringToDart({cpp_literal}), exception)'}, |
| 'ScalarValueString': {'nullptr': 'DartStringAdapter(DartStringPeer::nullString())', |
| 'String("")': 'DartStringAdapter(DartStringPeer::emptyString())', |
| '*': 'DartUtilities::dartToScalarValueString(DartUtilities::stringToDart({cpp_literal}), exception)'}, |
| } |
| |
| |
| def literal_cpp_value(idl_type, idl_literal): |
| """Converts an expression that is a valid C++ literal for this type.""" |
| # FIXME: add validation that idl_type and idl_literal are compatible |
| literal_value = str(idl_literal) |
| base_type = idl_type.preprocessed_type.base_type |
| if base_type in CPP_UNSIGNED_TYPES: |
| return literal_value + 'u' |
| if base_type in CPP_LITERAL_TO_DART_VALUE: |
| if literal_value in CPP_LITERAL_TO_DART_VALUE[base_type]: |
| format_string = CPP_LITERAL_TO_DART_VALUE[base_type][literal_value] |
| else: |
| format_string = CPP_LITERAL_TO_DART_VALUE[base_type]['*'] |
| return format_string.format(cpp_literal=literal_value) |
| return literal_value |
| |
| IdlType.literal_cpp_value = literal_cpp_value |
| |
| |
| CPP_DEFAULT_VALUE_FOR_CPP_TYPE = { |
| 'DOMString': 'String()', |
| 'ByteString': 'String()', |
| 'ScalarValueString': 'String()', |
| 'boolean': 'false', |
| 'float': '0.0f', |
| 'unrestricted float': '0.0f', |
| 'double': '0.0', |
| 'unrestricted double': '0.0', |
| 'byte': '0', |
| 'octet': '0', |
| 'short': '0', |
| 'unsigned short': '0', |
| 'long': '0', |
| 'unsigned long': '0', |
| 'long long': '0', |
| 'unsigned long long': '0', |
| } |
| |
| |
| def default_cpp_value_for_cpp_type(idl_type): |
| idl_type = idl_type.preprocessed_type |
| add_includes_for_type(idl_type) |
| base_idl_type = idl_type.base_type |
| if base_idl_type in CPP_DEFAULT_VALUE_FOR_CPP_TYPE: |
| return CPP_DEFAULT_VALUE_FOR_CPP_TYPE[base_idl_type] |
| return 'nullptr' |
| |
| |
| # Override idl_type.name to not suffix orNull to the name, in Dart we always |
| # test for null e.g., |
| # |
| # bool isNull = false; |
| # TYPE* result = receiver->GETTER(isNull); |
| # if (isNull) |
| # return; |
| # |
| def dart_name(idl_type): |
| """Return type name. |
| |
| http://heycam.github.io/webidl/#dfn-type-name |
| """ |
| base_type = idl_type.base_type |
| base_type_name = TYPE_NAMES.get(base_type, base_type) |
| if idl_type.native_array_element_type: |
| return idl_type.inner_name() |
| return base_type_name |
| |
| IdlType.name = property(dart_name) |
| IdlUnionType.name = property(dart_name) |
| |
| |
| # If True use the WithNullCheck version when converting. |
| def allow_null(idl_type, extended_attributes, has_type_checking_interface): |
| if idl_type.base_type in ('DOMString', 'ByteString', 'ScalarValueString'): |
| # This logic is in cpp_types in v8_types.py, since they handle |
| # this using the V8StringResource type. We handle it here |
| if (extended_attributes.get('TreatNullAs') == 'NullString' or |
| extended_attributes.get('TreatUndefinedAs') == 'NullString'): |
| return True |
| |
| if extended_attributes.get('Default') == 'NullString': |
| return True |
| |
| if extended_attributes.get('Default') == 'Undefined': |
| return True |
| |
| if idl_type.is_nullable: |
| return True |
| |
| return False |
| else: |
| # This logic is implemented in the methods.cpp template in V8 |
| if (idl_type.is_nullable or not has_type_checking_interface): |
| return True |
| |
| if extended_attributes.get('Default') == 'Undefined': |
| return True |
| |
| return False |
| |
| |
| # If True use the WithEmptyCheck version when converting. |
| def allow_empty(idl_type, extended_attributes): |
| if idl_type.base_type in ('DOMString', 'ByteString', 'ScalarValueString'): |
| # This logic is in cpp_types in v8_types.py, since they handle |
| # this using the V8StringResource type. We handle it here |
| if (extended_attributes.get('TreatNullAs') == 'EmptyString' or |
| extended_attributes.get('TreatUndefinedAs') == 'EmptyString'): |
| return True |
| |
| if extended_attributes.get('Default') == 'EmptyString': |
| return True |
| |
| return False |
