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Unified Diff: mojo/public/tools/bindings/generators/mojom_cpp_generator.py

Issue 814543006: Move //mojo/{public, edk} underneath //third_party (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Rebase Created 5 years, 11 months ago
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Index: mojo/public/tools/bindings/generators/mojom_cpp_generator.py
diff --git a/mojo/public/tools/bindings/generators/mojom_cpp_generator.py b/mojo/public/tools/bindings/generators/mojom_cpp_generator.py
deleted file mode 100644
index 34bba30e69be34948f5bd666dc76fbfc94388e61..0000000000000000000000000000000000000000
--- a/mojo/public/tools/bindings/generators/mojom_cpp_generator.py
+++ /dev/null
@@ -1,387 +0,0 @@
-# Copyright 2013 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.
-
-"""Generates C++ source files from a mojom.Module."""
-
-import mojom.generate.generator as generator
-import mojom.generate.module as mojom
-import mojom.generate.pack as pack
-from mojom.generate.template_expander import UseJinja
-
-
-_kind_to_cpp_type = {
- mojom.BOOL: "bool",
- mojom.INT8: "int8_t",
- mojom.UINT8: "uint8_t",
- mojom.INT16: "int16_t",
- mojom.UINT16: "uint16_t",
- mojom.INT32: "int32_t",
- mojom.UINT32: "uint32_t",
- mojom.FLOAT: "float",
- mojom.HANDLE: "mojo::Handle",
- mojom.DCPIPE: "mojo::DataPipeConsumerHandle",
- mojom.DPPIPE: "mojo::DataPipeProducerHandle",
- mojom.MSGPIPE: "mojo::MessagePipeHandle",
- mojom.SHAREDBUFFER: "mojo::SharedBufferHandle",
- mojom.NULLABLE_HANDLE: "mojo::Handle",
- mojom.NULLABLE_DCPIPE: "mojo::DataPipeConsumerHandle",
- mojom.NULLABLE_DPPIPE: "mojo::DataPipeProducerHandle",
- mojom.NULLABLE_MSGPIPE: "mojo::MessagePipeHandle",
- mojom.NULLABLE_SHAREDBUFFER: "mojo::SharedBufferHandle",
- mojom.INT64: "int64_t",
- mojom.UINT64: "uint64_t",
- mojom.DOUBLE: "double",
-}
-
-_kind_to_cpp_literal_suffix = {
- mojom.UINT8: "U",
- mojom.UINT16: "U",
- mojom.UINT32: "U",
- mojom.FLOAT: "f",
- mojom.UINT64: "ULL",
-}
-
-def ConstantValue(constant):
- return ExpressionToText(constant.value, kind=constant.kind)
-
-def DefaultValue(field):
- if field.default:
- if mojom.IsStructKind(field.kind):
- assert field.default == "default"
- return "%s::New()" % GetNameForKind(field.kind)
- return ExpressionToText(field.default, kind=field.kind)
- return ""
-
-def NamespaceToArray(namespace):
- return namespace.split('.') if namespace else []
-
-def GetNameForKind(kind, internal = False):
- parts = []
- if kind.imported_from:
- parts.extend(NamespaceToArray(kind.imported_from["namespace"]))
- if internal:
- parts.append("internal")
- if kind.parent_kind:
- parts.append(kind.parent_kind.name)
- parts.append(kind.name)
- return "::".join(parts)
-
-def GetCppType(kind):
- if mojom.IsArrayKind(kind):
- return "mojo::internal::Array_Data<%s>*" % GetCppType(kind.kind)
- if mojom.IsMapKind(kind):
- return "mojo::internal::Map_Data<%s, %s>*" % (
- GetCppType(kind.key_kind), GetCppType(kind.value_kind))
- if mojom.IsStructKind(kind):
- return "%s_Data*" % GetNameForKind(kind, internal=True)
- if mojom.IsInterfaceKind(kind) or mojom.IsInterfaceRequestKind(kind):
- return "mojo::MessagePipeHandle"
- if mojom.IsEnumKind(kind):
- return "int32_t"
- if mojom.IsStringKind(kind):
- return "mojo::internal::String_Data*"
- return _kind_to_cpp_type[kind]
-
-def GetCppPodType(kind):
- if mojom.IsStringKind(kind):
- return "char*"
- return _kind_to_cpp_type[kind]
-
-def GetCppArrayArgWrapperType(kind):
- if mojom.IsEnumKind(kind):
- return GetNameForKind(kind)
- if mojom.IsStructKind(kind):
- return "%sPtr" % GetNameForKind(kind)
- if mojom.IsArrayKind(kind):
- return "mojo::Array<%s> " % GetCppArrayArgWrapperType(kind.kind)
- if mojom.IsMapKind(kind):
- return "mojo::Map<%s, %s> " % (GetCppArrayArgWrapperType(kind.key_kind),
- GetCppArrayArgWrapperType(kind.value_kind))
- if mojom.IsInterfaceKind(kind):
- raise Exception("Arrays of interfaces not yet supported!")
- if mojom.IsInterfaceRequestKind(kind):
- raise Exception("Arrays of interface requests not yet supported!")
- if mojom.IsStringKind(kind):
- return "mojo::String"
- if mojom.IsHandleKind(kind):
- return "mojo::ScopedHandle"
- if mojom.IsDataPipeConsumerKind(kind):
- return "mojo::ScopedDataPipeConsumerHandle"
- if mojom.IsDataPipeProducerKind(kind):
- return "mojo::ScopedDataPipeProducerHandle"
- if mojom.IsMessagePipeKind(kind):
- return "mojo::ScopedMessagePipeHandle"
- if mojom.IsSharedBufferKind(kind):
- return "mojo::ScopedSharedBufferHandle"
- return _kind_to_cpp_type[kind]
-
-def GetCppResultWrapperType(kind):
- if mojom.IsEnumKind(kind):
- return GetNameForKind(kind)
- if mojom.IsStructKind(kind):
- return "%sPtr" % GetNameForKind(kind)
- if mojom.IsArrayKind(kind):
- return "mojo::Array<%s>" % GetCppArrayArgWrapperType(kind.kind)
- if mojom.IsMapKind(kind):
- return "mojo::Map<%s, %s>" % (GetCppArrayArgWrapperType(kind.key_kind),
- GetCppArrayArgWrapperType(kind.value_kind))
- if mojom.IsInterfaceKind(kind):
- return "%sPtr" % GetNameForKind(kind)
- if mojom.IsInterfaceRequestKind(kind):
- return "mojo::InterfaceRequest<%s>" % GetNameForKind(kind.kind)
- if mojom.IsStringKind(kind):
- return "mojo::String"
- if mojom.IsHandleKind(kind):
- return "mojo::ScopedHandle"
- if mojom.IsDataPipeConsumerKind(kind):
- return "mojo::ScopedDataPipeConsumerHandle"
- if mojom.IsDataPipeProducerKind(kind):
- return "mojo::ScopedDataPipeProducerHandle"
- if mojom.IsMessagePipeKind(kind):
- return "mojo::ScopedMessagePipeHandle"
- if mojom.IsSharedBufferKind(kind):
- return "mojo::ScopedSharedBufferHandle"
- return _kind_to_cpp_type[kind]
-
-def GetCppWrapperType(kind):
- if mojom.IsEnumKind(kind):
- return GetNameForKind(kind)
- if mojom.IsStructKind(kind):
- return "%sPtr" % GetNameForKind(kind)
- if mojom.IsArrayKind(kind):
- return "mojo::Array<%s>" % GetCppArrayArgWrapperType(kind.kind)
- if mojom.IsMapKind(kind):
- return "mojo::Map<%s, %s>" % (GetCppArrayArgWrapperType(kind.key_kind),
- GetCppArrayArgWrapperType(kind.value_kind))
- if mojom.IsInterfaceKind(kind):
- return "%sPtr" % GetNameForKind(kind)
- if mojom.IsInterfaceRequestKind(kind):
- raise Exception("InterfaceRequest fields not supported!")
- if mojom.IsStringKind(kind):
- return "mojo::String"
- if mojom.IsHandleKind(kind):
- return "mojo::ScopedHandle"
- if mojom.IsDataPipeConsumerKind(kind):
- return "mojo::ScopedDataPipeConsumerHandle"
- if mojom.IsDataPipeProducerKind(kind):
- return "mojo::ScopedDataPipeProducerHandle"
- if mojom.IsMessagePipeKind(kind):
- return "mojo::ScopedMessagePipeHandle"
- if mojom.IsSharedBufferKind(kind):
- return "mojo::ScopedSharedBufferHandle"
- return _kind_to_cpp_type[kind]
-
-def GetCppConstWrapperType(kind):
- if mojom.IsStructKind(kind):
- return "%sPtr" % GetNameForKind(kind)
- if mojom.IsArrayKind(kind):
- return "mojo::Array<%s>" % GetCppArrayArgWrapperType(kind.kind)
- if mojom.IsMapKind(kind):
- return "mojo::Map<%s, %s>" % (GetCppArrayArgWrapperType(kind.key_kind),
- GetCppArrayArgWrapperType(kind.value_kind))
- if mojom.IsInterfaceKind(kind):
- return "%sPtr" % GetNameForKind(kind)
- if mojom.IsInterfaceRequestKind(kind):
- return "mojo::InterfaceRequest<%s>" % GetNameForKind(kind.kind)
- if mojom.IsEnumKind(kind):
- return GetNameForKind(kind)
- if mojom.IsStringKind(kind):
- return "const mojo::String&"
- if mojom.IsHandleKind(kind):
- return "mojo::ScopedHandle"
- if mojom.IsDataPipeConsumerKind(kind):
- return "mojo::ScopedDataPipeConsumerHandle"
- if mojom.IsDataPipeProducerKind(kind):
- return "mojo::ScopedDataPipeProducerHandle"
- if mojom.IsMessagePipeKind(kind):
- return "mojo::ScopedMessagePipeHandle"
- if mojom.IsSharedBufferKind(kind):
- return "mojo::ScopedSharedBufferHandle"
- if not kind in _kind_to_cpp_type:
- print "missing:", kind.spec
- return _kind_to_cpp_type[kind]
-
-def GetCppFieldType(kind):
- if mojom.IsStructKind(kind):
- return ("mojo::internal::StructPointer<%s_Data>" %
- GetNameForKind(kind, internal=True))
- if mojom.IsArrayKind(kind):
- return "mojo::internal::ArrayPointer<%s>" % GetCppType(kind.kind)
- if mojom.IsMapKind(kind):
- return ("mojo::internal::StructPointer<mojo::internal::Map_Data<%s, %s>>" %
- (GetCppType(kind.key_kind), GetCppType(kind.value_kind)))
- if mojom.IsInterfaceKind(kind) or mojom.IsInterfaceRequestKind(kind):
- return "mojo::MessagePipeHandle"
- if mojom.IsEnumKind(kind):
- return GetNameForKind(kind)
- if mojom.IsStringKind(kind):
- return "mojo::internal::StringPointer"
- return _kind_to_cpp_type[kind]
-
-def IsStructWithHandles(struct):
- for pf in struct.packed.packed_fields:
- if mojom.IsAnyHandleKind(pf.field.kind):
- return True
- return False
-
-def TranslateConstants(token, kind):
- if isinstance(token, mojom.NamedValue):
- # Both variable and enum constants are constructed like:
- # Namespace::Struct::CONSTANT_NAME
- # For enums, CONSTANT_NAME is ENUM_NAME_ENUM_VALUE.
- name = []
- if token.imported_from:
- name.extend(NamespaceToArray(token.namespace))
- if token.parent_kind:
- name.append(token.parent_kind.name)
- if isinstance(token, mojom.EnumValue):
- name.append(
- "%s_%s" % (generator.CamelCaseToAllCaps(token.enum.name), token.name))
- else:
- name.append(token.name)
- return "::".join(name)
-
- if isinstance(token, mojom.BuiltinValue):
- if token.value == "double.INFINITY" or token.value == "float.INFINITY":
- return "INFINITY";
- if token.value == "double.NEGATIVE_INFINITY" or \
- token.value == "float.NEGATIVE_INFINITY":
- return "-INFINITY";
- if token.value == "double.NAN" or token.value == "float.NAN":
- return "NAN";
-
- if (kind is not None and mojom.IsFloatKind(kind)):
- return token if token.isdigit() else token + "f";
-
- # Per C++11, 2.14.2, the type of an integer literal is the first of the
- # corresponding list in Table 6 in which its value can be represented. In this
- # case, the list for decimal constants with no suffix is:
- # int, long int, long long int
- # The standard considers a program ill-formed if it contains an integer
- # literal that cannot be represented by any of the allowed types.
- #
- # As it turns out, MSVC doesn't bother trying to fall back to long long int,
- # so the integral constant -2147483648 causes it grief: it decides to
- # represent 2147483648 as an unsigned integer, and then warns that the unary
- # minus operator doesn't make sense on unsigned types. Doh!
- if kind == mojom.INT32 and token == '-2147483648':
- return '(-%d - 1) /* %s */' % (
- 2**31 - 1, 'Workaround for MSVC bug; see https://crbug.com/445618')
-
- return '%s%s' % (token, _kind_to_cpp_literal_suffix.get(kind, ''))
-
-def ExpressionToText(value, kind=None):
- return TranslateConstants(value, kind)
-
-def ShouldInlineStruct(struct):
- # TODO(darin): Base this on the size of the wrapper class.
- if len(struct.fields) > 4:
- return False
- for field in struct.fields:
- if mojom.IsMoveOnlyKind(field.kind):
- return False
- return True
-
-def GetArrayValidateParams(kind):
- if (not mojom.IsArrayKind(kind) and not mojom.IsMapKind(kind) and
- not mojom.IsStringKind(kind)):
- return "mojo::internal::NoValidateParams"
-
- if mojom.IsStringKind(kind):
- expected_num_elements = 0
- element_is_nullable = False
- element_validate_params = "mojo::internal::NoValidateParams"
- elif mojom.IsMapKind(kind):
- expected_num_elements = 0
- element_is_nullable = mojom.IsNullableKind(kind.value_kind)
- element_validate_params = GetArrayValidateParams(kind.value_kind)
- else:
- expected_num_elements = generator.ExpectedArraySize(kind) or 0
- element_is_nullable = mojom.IsNullableKind(kind.kind)
- element_validate_params = GetArrayValidateParams(kind.kind)
-
- return "mojo::internal::ArrayValidateParams<%d, %s,\n%s> " % (
- expected_num_elements,
- 'true' if element_is_nullable else 'false',
- element_validate_params)
-
-def GetMapValidateParams(value_kind):
- # Unlike GetArrayValidateParams, we are given the wrapped kind, instead of
- # the raw array kind. So we wrap the return value of GetArrayValidateParams.
- element_is_nullable = mojom.IsNullableKind(value_kind)
- return "mojo::internal::ArrayValidateParams<0, %s,\n%s> " % (
- 'true' if element_is_nullable else 'false',
- GetArrayValidateParams(value_kind))
-
-_HEADER_SIZE = 8
-
-class Generator(generator.Generator):
-
- cpp_filters = {
- "constant_value": ConstantValue,
- "cpp_const_wrapper_type": GetCppConstWrapperType,
- "cpp_field_type": GetCppFieldType,
- "cpp_pod_type": GetCppPodType,
- "cpp_result_type": GetCppResultWrapperType,
- "cpp_type": GetCppType,
- "cpp_wrapper_type": GetCppWrapperType,
- "default_value": DefaultValue,
- "expression_to_text": ExpressionToText,
- "get_array_validate_params": GetArrayValidateParams,
- "get_map_validate_params": GetMapValidateParams,
- "get_name_for_kind": GetNameForKind,
- "get_pad": pack.GetPad,
- "has_callbacks": mojom.HasCallbacks,
- "should_inline": ShouldInlineStruct,
- "is_array_kind": mojom.IsArrayKind,
- "is_cloneable_kind": mojom.IsCloneableKind,
- "is_enum_kind": mojom.IsEnumKind,
- "is_move_only_kind": mojom.IsMoveOnlyKind,
- "is_any_handle_kind": mojom.IsAnyHandleKind,
- "is_interface_kind": mojom.IsInterfaceKind,
- "is_interface_request_kind": mojom.IsInterfaceRequestKind,
- "is_map_kind": mojom.IsMapKind,
- "is_nullable_kind": mojom.IsNullableKind,
- "is_object_kind": mojom.IsObjectKind,
- "is_string_kind": mojom.IsStringKind,
- "is_struct_kind": mojom.IsStructKind,
- "is_struct_with_handles": IsStructWithHandles,
- "struct_size": lambda ps: ps.GetTotalSize() + _HEADER_SIZE,
- "struct_from_method": generator.GetStructFromMethod,
- "response_struct_from_method": generator.GetResponseStructFromMethod,
- "stylize_method": generator.StudlyCapsToCamel,
- "to_all_caps": generator.CamelCaseToAllCaps,
- }
-
- def GetJinjaExports(self):
- return {
- "module": self.module,
- "namespace": self.module.namespace,
- "namespaces_as_array": NamespaceToArray(self.module.namespace),
- "imports": self.module.imports,
- "kinds": self.module.kinds,
- "enums": self.module.enums,
- "structs": self.GetStructs(),
- "interfaces": self.module.interfaces,
- }
-
- @UseJinja("cpp_templates/module.h.tmpl", filters=cpp_filters)
- def GenerateModuleHeader(self):
- return self.GetJinjaExports()
-
- @UseJinja("cpp_templates/module-internal.h.tmpl", filters=cpp_filters)
- def GenerateModuleInternalHeader(self):
- return self.GetJinjaExports()
-
- @UseJinja("cpp_templates/module.cc.tmpl", filters=cpp_filters)
- def GenerateModuleSource(self):
- return self.GetJinjaExports()
-
- def GenerateFiles(self, args):
- self.Write(self.GenerateModuleHeader(),
- self.MatchMojomFilePath("%s.h" % self.module.name))
- self.Write(self.GenerateModuleInternalHeader(),
- self.MatchMojomFilePath("%s-internal.h" % self.module.name))
- self.Write(self.GenerateModuleSource(),
- self.MatchMojomFilePath("%s.cc" % self.module.name))

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