def _GenerateEvent(self, event):
"""Generates the namespaces for an event.
"""
c = Code()
# TODO(kalman): use event.unix_name not Classname.
event_namespace = cpp_util.Classname(event.name)
(c.Append('namespace %s {' % event_namespace).Append().Concat(
self._GenerateEventNameConstant(event)).Concat(
self._GenerateCreateCallbackArguments(event)).Append(
'} // namespace %s' % event_namespace))
return c
def _GenerateEvent(self, event):
# TODO(kalman): use event.unix_name not Classname.
c = Code()
event_namespace = cpp_util.Classname(event.name)
(c.Append('namespace %s {' % event_namespace)
.Append()
.Cblock(self._GenerateEventNameConstant(event))
.Cblock(self._GenerateCreateCallbackArguments(None, event))
.Append('} // namespace %s' % event_namespace)
)
return c
def GenerateIncludes(self):
"""Returns the #include lines for self._namespace.
"""
c = Code()
for header in sorted([
'%s/%s.h' %
(dependency.source_file_dir, self._cpp_namespaces[dependency])
for dependency in self._NamespaceTypeDependencies().keys()
]):
c.Append('#include "%s"' % header)
return c
def GenerateIncludes(self, include_soft=False):
"""Returns the #include lines for self._default_namespace.
"""
c = Code()
if self._default_namespace.manifest_keys:
c.Append('#include "base/strings/string_piece.h"')
# Note: It's possible that there are multiple dependencies from the same
# API. Make sure to only include them once.
added_paths = set()
for namespace, dependencies in self._NamespaceTypeDependencies().items(
):
for dependency in dependencies:
if dependency.hard or include_soft:
path = '%s/%s.h' % (namespace.source_file_dir,
namespace.unix_name)
if path not in added_paths:
added_paths.add(path)
c.Append('#include "%s"' % cpp_util.ToPosixPath(path))
return c
def testLinePrefixes(self):
c = Code()
c.Sblock(line='/**', line_prefix=' * ')
c.Sblock('@typedef {{')
c.Append('foo: bar,')
c.Sblock('baz: {')
c.Append('x: y')
c.Eblock('}')
c.Eblock('}}')
c.Eblock(line=' */')
output = c.Render()
self.assertMultiLineEqual(
'/**\n'
' * @typedef {{\n'
' * foo: bar,\n'
' * baz: {\n'
' * x: y\n'
' * }\n'
' * }}\n'
' */', output)
def CloseNamespace(namespace):
"""Get closing root namespace declarations.
"""
c = Code()
# In lieu of GYP supporting None for the namespace variable the '' namespace
# implies there is no root namespace.
if namespace == '':
return c
for component in reversed(namespace.split('::')):
c.Append('} // namespace %s' % component)
return c
def testCommentWithSpecialCharacters(self):
c = Code()
c.Comment('20% of 80%s')
c.Substitute({})
self.assertEquals('// 20% of 80%s', c.Render())
d = Code()
d.Append('90')
d.Concat(c)
self.assertEquals('90\n'
'// 20% of 80%s',
d.Render())
def OpenNamespace(namespace):
"""Get opening root namespace declarations.
"""
c = Code()
# In lieu of GYP supporting None for the namespace variable the '' namespace
# implies there is no root namespace.
if namespace == '':
return c
for component in namespace.split('::'):
c.Append('namespace %s {' % component)
return c
def GenerateForwardDeclarations(self):
"""Returns the forward declarations for self._namespace.
Use after GetRootNamespaceStart. Assumes all namespaces are relative to
self._root_namespace.
"""
c = Code()
for namespace, types in sorted(
self._NamespaceTypeDependencies().items()):
c.Append('namespace %s {' % namespace.name)
for type_ in types:
if namespace.types[type_].type_ != PropertyType.ARRAY:
c.Append('struct %s;' % type_)
c.Append('}')
c.Concat(self.GetNamespaceStart())
for (name, type_) in self._namespace.types.items():
if not type_.functions and type_.type_ != PropertyType.ARRAY:
c.Append('struct %s;' % name)
c.Concat(self.GetNamespaceEnd())
return c
def GenerateIncludes(self, include_soft=False):
"""Returns the #include lines for self._default_namespace.
"""
c = Code()
for namespace, dependencies in self._NamespaceTypeDependencies().items(
):
for dependency in dependencies:
if dependency.hard or include_soft:
c.Append('#include "%s/%s.h"' %
(namespace.source_file_dir, namespace.unix_name))
return c
def _GenerateCreateCallbackArguments(self, function_scope, callback):
"""Generate all functions to create Value parameters for a callback.
E.g for function "Bar", generate Bar::Results::Create
E.g for event "Baz", generate Baz::Create
function_scope: the function scope path, e.g. Foo::Bar for the function
Foo::Bar::Baz().
callback: the Function object we are creating callback arguments for.
"""
c = Code()
params = callback.params
expanded_params = self._cpp_type_generator.ExpandParams(params)
c.Concat(self._GeneratePropertyFunctions(function_scope, expanded_params))
param_lists = self._cpp_type_generator.GetAllPossibleParameterLists(params)
for param_list in param_lists:
(c.Sblock('scoped_ptr<base::ListValue> %(function_scope)s::'
'Create(%(declaration_list)s) {')
.Append('scoped_ptr<base::ListValue> create_results('
'new base::ListValue());')
)
declaration_list = []
for param in param_list:
# We treat this argument as 'required' to avoid wrapping it in a
# scoped_ptr if it's optional.
param_copy = param.Copy()
param_copy.optional = False
c.Append('create_results->Append(%s);' %
self._CreateValueFromProperty(param_copy, param_copy.unix_name))
declaration_list.append("const %s" % cpp_util.GetParameterDeclaration(
param_copy, self._cpp_type_generator.GetType(param_copy)))
c.Append('return create_results.Pass();')
c.Eblock('}')
c.Substitute({
'function_scope': function_scope,
'declaration_list': ', '.join(declaration_list)
})
return c
def _GenerateFunctionJsDoc(self, function):
"""Generates the documentation for a function as a Code.
Returns an empty code object if the object has no documentation.
"""
c = Code()
c.Sblock(line='/**', line_prefix=' * ')
if function.description:
c.Comment(function.description, comment_prefix='')
def append_field(c, tag, js_type, name, optional, description):
c.Append('@%s {' % tag)
c.Concat(js_type, new_line=False)
if optional:
c.Append('=', new_line=False)
c.Append('} %s' % name, new_line=False)
if description:
c.Comment(' %s' % description, comment_prefix='',
wrap_indent=4, new_line=False)
for param in function.params:
append_field(c, 'param', self._TypeToJsType(param.type_), param.name,
param.optional, param.description)
if function.callback:
append_field(c, 'param', self._FunctionToJsFunction(function.callback),
function.callback.name, function.callback.optional,
function.callback.description)
if function.returns:
append_field(c, 'return', self._TypeToJsType(function.returns),
'', False, function.returns.description)
if function.deprecated:
c.Append('@deprecated %s' % function.deprecated)
c.Append(self._GenerateSeeLink('method', function.name))
c.Eblock(' */')
return c
def Generate(self):
"""Generates a Code object with the .cc for a single namespace.
"""
c = Code()
(c.Append(cpp_util.CHROMIUM_LICENSE).Append().Append(
cpp_util.GENERATED_FILE_MESSAGE %
self._namespace.source_file).Append().Append(
self._util_cc_helper.GetIncludePath()).Append(
'#include "base/logging.h"').Append(
'#include "base/strings/string_number_conversions.h"').
Append('#include "base/strings/utf_string_conversions.h"').Append(
'#include "%s/%s.h"' %
(self._namespace.source_file_dir,
self._namespace.unix_name)).Cblock(
self._type_helper.GenerateIncludes(
include_soft=True)).Append().Concat(
cpp_util.OpenNamespace(self._cpp_namespace)).Cblock(
self._type_helper.GetNamespaceStart()))
if self._namespace.properties:
(c.Append('//').Append('// Properties').Append('//').Append())
for property in self._namespace.properties.values():
property_code = self._type_helper.GeneratePropertyValues(
property,
'const %(type)s %(name)s = %(value)s;',
nodoc=True)
if property_code:
c.Cblock(property_code)
if self._namespace.types:
(c.Append('//').Append('// Types').Append('//').Append().Cblock(
self._GenerateTypes(None, self._namespace.types.values())))
if self._namespace.functions:
(c.Append('//').Append('// Functions').Append('//').Append())
for function in self._namespace.functions.values():
c.Cblock(self._GenerateFunction(function))
if self._namespace.events:
(c.Append('//').Append('// Events').Append('//').Append())
for event in self._namespace.events.values():
c.Cblock(self._GenerateEvent(event))
(c.Concat(self._type_helper.GetNamespaceEnd()).Cblock(
cpp_util.CloseNamespace(self._cpp_namespace)))
return c
def _GenerateFunctionParamsCreate(self, function):
"""Generate function to create an instance of Params. The generated
function takes a base::ListValue of arguments.
E.g for function "Bar", generate Bar::Params::Create()
"""
c = Code()
(c.Append('// static').Sblock(
'scoped_ptr<Params> Params::Create(%s) {' %
self._GenerateParams(['const base::ListValue& args'])))
if self._generate_error_messages:
c.Append('DCHECK(error);')
(c.Concat(self._GenerateParamsCheck(
function,
'args')).Append('scoped_ptr<Params> params(new Params());'))
for param in function.params:
c.Concat(self._InitializePropertyToDefault(param, 'params'))
for i, param in enumerate(function.params):
# Any failure will cause this function to return. If any argument is
# incorrect or missing, those following it are not processed. Note that
# for optional arguments, we allow missing arguments and proceed because
# there may be other arguments following it.
failure_value = 'scoped_ptr<Params>()'
c.Append()
value_var = param.unix_name + '_value'
(c.Append('const base::Value* %(value_var)s = NULL;').Append(
'if (args.Get(%(i)s, &%(value_var)s) &&').Sblock(
' !%(value_var)s->IsType(base::Value::TYPE_NULL)) {').
Concat(
self._GeneratePopulatePropertyFromValue(
param, value_var, 'params', failure_value)).Eblock('}'))
if not param.optional:
(c.Sblock('else {').Concat(
self._GenerateError('"\'%%(key)s\' is required"')).Append(
'return %s;' % failure_value).Eblock('}'))
c.Substitute({'value_var': value_var, 'i': i, 'key': param.name})
(c.Append().Append('return params.Pass();').Eblock('}').Append())
return c
def _GenerateTypePopulateProperty(self, prop, src, dst):
"""Generate the code to populate a single property in a type.
src: base::DictionaryValue*
dst: Type*
"""
c = Code()
value_var = prop.unix_name + '_value'
c.Append('const base::Value* %(value_var)s = NULL;')
if prop.optional:
(c.Sblock(
'if (%(src)s->GetWithoutPathExpansion("%(key)s", &%(value_var)s)) {'
).Concat(
self._GeneratePopulatePropertyFromValue(
prop, value_var, dst, 'false')))
underlying_type = self._type_helper.FollowRef(prop.type_)
if underlying_type.property_type == PropertyType.ENUM:
namespace_prefix = (
'%s::' % underlying_type.namespace.unix_name
if underlying_type.namespace != self._namespace else '')
(c.Append('} else {').Append(
'%%(dst)s->%%(name)s = %s%s;' %
(namespace_prefix,
self._type_helper.GetEnumNoneValue(prop.type_))))
c.Eblock('}')
else:
(c.Sblock(
'if (!%(src)s->GetWithoutPathExpansion("%(key)s", &%(value_var)s)) {'
).Concat(self._GenerateError('"\'%%(key)s\' is required"')).Append(
'return false;').Eblock('}').Concat(
self._GeneratePopulatePropertyFromValue(
prop, value_var, dst, 'false')))
c.Append()
c.Substitute({
'value_var': value_var,
'key': prop.name,
'src': src,
'dst': dst,
'name': prop.unix_name
})
return c
def _TypeToJsType(self, namespace_name, js_type):
"""Converts a model.Type to a JS type (number, Array, etc.)"""
if js_type.property_type in (PropertyType.INTEGER,
PropertyType.DOUBLE):
return Code().Append('number')
if js_type.property_type is PropertyType.OBJECT:
if js_type.properties:
c = Code()
self.AppendObjectDefinition(c, namespace_name,
js_type.properties)
return c
if js_type.instance_of:
return Code().Append(js_type.instance_of)
return Code().Append('Object')
if js_type.property_type is PropertyType.ARRAY:
return (Code().Append('!Array<').Concat(
self._TypeToJsType(namespace_name, js_type.item_type),
new_line=False).Append('>', new_line=False))
if js_type.property_type is PropertyType.REF:
ref_type = '!chrome.%s.%s' % (namespace_name, js_type.ref_type)
return Code().Append(ref_type)
if js_type.property_type is PropertyType.CHOICES:
c = Code()
c.Append('(')
for i, choice in enumerate(js_type.choices):
c.Concat(self._TypeToJsType(namespace_name, choice),
new_line=False)
if i is not len(js_type.choices) - 1:
c.Append('|', new_line=False)
c.Append(')', new_line=False)
return c
if js_type.property_type is PropertyType.FUNCTION:
return self._FunctionToJsFunction(namespace_name, js_type.function)
if js_type.property_type is PropertyType.BINARY:
return Code().Append('ArrayBuffer')
if js_type.property_type is PropertyType.ANY:
return Code().Append('*')
if js_type.property_type.is_fundamental:
return Code().Append(js_type.property_type.name)
return Code().Append(
'?') # TODO(tbreisacher): Make this more specific.
def _GenerateChoiceTypeToValue(self, cpp_namespace, type_):
"""Generates a function that serializes a choice-representing type
into a base::Value.
"""
c = Code()
c.Sblock('std::unique_ptr<base::Value> %s::ToValue() const {' %
cpp_namespace)
c.Append('std::unique_ptr<base::Value> result;')
for choice in type_.choices:
choice_var = 'as_%s' % choice.unix_name
# Enums cannot be wrapped with scoped_ptr, but the XXX_NONE enum value
# is equal to 0.
(c.Sblock('if (%s) {' % choice_var).Append(
'DCHECK(!result) << "Cannot set multiple choices for %s";' %
type_.unix_name).Cblock(
self._CreateValueFromType('result = %s;', choice.name,
choice, choice_var,
True)).Eblock('}'))
(c.Append('DCHECK(result) << "Must set at least one choice for %s";' %
type_.unix_name).Append('return result;').Eblock('}'))
return c
def _GenerateManifestKeyConstants(self, properties):
# type: (list[Property]) -> Code
"""Generates string constants for manifest keys for the given |properties|.
"""
c = Code()
for prop in properties:
c.Append(
'static constexpr char %s[] = "%s";' %
(cpp_util.UnixNameToConstantName(prop.unix_name), prop.name))
return c
def _GenerateTypeFromValue(self, cpp_namespace, type_):
classname = cpp_util.Classname(schema_util.StripNamespace(type_.name))
c = Code()
(c.Append('// static').Append(
'scoped_ptr<%s> %s::FromValue(const base::Value& value) {' %
(classname, cpp_namespace)).Append(
' scoped_ptr<%s> out(new %s());' %
(classname, classname)).Append(
' if (!Populate(value, out.get()))').Append(
' return scoped_ptr<%s>();' %
classname).Append(' return out.Pass();').Append('}'))
return c
def _GeneratePropertyFunctions(self, param_namespace, params):
"""Generate the functions for structures generated by a property such as
CreateEnumValue for ENUMs and Populate/ToValue for Params/Results objects.
"""
c = Code()
for param in params:
if param.type_ == PropertyType.OBJECT:
c.Concat(self._GenerateType(
param_namespace + '::' + cpp_util.Classname(param.name),
param))
c.Append()
elif param.type_ == PropertyType.ARRAY:
c.Concat(self._GeneratePropertyFunctions(
param_namespace, [param.item_type]))
elif param.type_ == PropertyType.CHOICES:
c.Concat(self._GeneratePropertyFunctions(
param_namespace, param.choices.values()))
elif param.type_ == PropertyType.ENUM:
c.Concat(self._GenerateCreateEnumValue(param_namespace, param))
c.Append()
return c
def _GenerateError(self, body):
"""Generates an error message pertaining to population failure.
E.g 'expected bool, got int'
"""
c = Code()
if not self._generate_error_messages:
return c
(c.Append('if (error->length())')
.Append(' error->append(UTF8ToUTF16("; "));')
.Append('error->append(UTF8ToUTF16(%s));' % body))
return c
def _GeneratePropertyStructures(self, props):
"""Generate the structures required by a property such as OBJECT classes
and enums.
"""
c = Code()
for prop in props:
if prop.type_ == PropertyType.OBJECT:
c.Concat(self._GenerateType(prop))
c.Append()
elif prop.type_ == PropertyType.ARRAY:
c.Concat(self._GeneratePropertyStructures([prop.item_type]))
c.Append()
elif prop.type_ == PropertyType.CHOICES:
c.Concat(self._GenerateEnumDeclaration(
self._cpp_type_generator.GetChoicesEnumType(prop),
prop,
[choice.type_.name for choice in prop.choices.values()]))
c.Concat(self._GeneratePropertyStructures(prop.choices.values()))
elif prop.type_ == PropertyType.ENUM:
enum_name = self._cpp_type_generator.GetCompiledType(prop)
c.Concat(self._GenerateEnumDeclaration(
enum_name,
prop,
prop.enum_values))
create_enum_value = ('scoped_ptr<base::Value> CreateEnumValue(%s %s);' %
(enum_name, prop.unix_name))
enum_to_string = 'std::string ToString(%s enum_param);' % enum_name
enum_from_string = ('%s From%sString(const std::string& enum_string);' %
(enum_name, enum_name))
# If the property is from the UI then we're in a struct so this function
# should be static. If it's from the client, then we're just in a
# namespace so we can't have the static keyword.
if prop.from_json:
create_enum_value = 'static %s' % create_enum_value
enum_to_string = 'static %s' % enum_to_string
enum_from_string = 'static %s' % enum_from_string
(c.Append(create_enum_value)
.Append(enum_to_string)
.Append(enum_from_string))
return c
def GenerateForwardDeclarations(self):
"""Returns the forward declarations for self._namespace.
Use after GetRootNamespaceStart. Assumes all namespaces are relative to
self._root_namespace.
"""
c = Code()
for namespace, types in sorted(
self._NamespaceTypeDependencies().items()):
c.Append('namespace %s {' % namespace.name)
for type_ in types:
if namespace.types[type_].type_ == PropertyType.STRING:
c.Append('typedef std::string %s;' % type_)
elif namespace.types[type_].type_ == PropertyType.ARRAY:
c.Append('typedef std::vector<%(item_type)s> %(name)s;')
c.Substitute({
'name':
type_,
'item_type':
self.GetType(namespace.types[type_].item_type,
wrap_optional=True)
})
else:
c.Append('struct %s;' % type_)
c.Append('}')
c.Concat(self.GetNamespaceStart())
for (name, type_) in self._namespace.types.items():
if not type_.functions and type_.type_ == PropertyType.OBJECT:
c.Append('struct %s;' % name)
c.Concat(self.GetNamespaceEnd())
return c
def Render(self):
"""Returns the Code object for the body of the .cc file, which handles the
initialization of all features."""
c = Code()
c.Append('%s::%s() {' % (self._provider_class, self._provider_class))
c.Sblock()
for k in sorted(self._features.keys()):
c.Sblock('{')
feature = self._features[k]
if type(feature) is list:
c.Append('std::vector<Feature*> features;')
for f in feature:
c.Sblock('{')
c.Concat(f.GetCode(self._feature_class))
c.Append('features.push_back(feature);')
c.Eblock('}')
c.Append(
'ComplexFeature* feature(new ComplexFeature(&features));')
c.Append('feature->set_name("%s");' % k)
else:
c.Concat(feature.GetCode(self._feature_class))
c.Append('AddFeature("%s", feature);' % k)
c.Eblock('}')
c.Eblock('}')
return c
def GenerateForwardDeclarations(self):
"""Returns the forward declarations for self._namespace.
Use after GetRootNamespaceStart. Assumes all namespaces are relative to
self._root_namespace.
"""
c = Code()
namespace_type_dependencies = self._NamespaceTypeDependencies()
for namespace in sorted(namespace_type_dependencies.keys(),
key=operator.attrgetter('name')):
c.Append('namespace %s {' % namespace.name)
for type_ in sorted(namespace_type_dependencies[namespace],
key=schema_util.StripSchemaNamespace):
type_name = schema_util.StripSchemaNamespace(type_)
if namespace.types[type_].type_ == PropertyType.STRING:
c.Append('typedef std::string %s;' % type_name)
elif namespace.types[type_].type_ == PropertyType.ARRAY:
c.Append('typedef std::vector<%(item_type)s> %(name)s;')
c.Substitute({
'name':
type_name,
'item_type':
self.GetType(namespace.types[type_].item_type,
wrap_optional=True)
})
# Enums cannot be forward declared.
elif namespace.types[type_].type_ != PropertyType.ENUM:
c.Append('struct %s;' % type_name)
c.Append('}')
c.Concat(self.GetNamespaceStart())
for (name, type_) in self._namespace.types.items():
if not type_.functions and type_.type_ == PropertyType.OBJECT:
c.Append('struct %s;' % schema_util.StripSchemaNamespace(name))
c.Concat(self.GetNamespaceEnd())
return c
def Render(self):
"""Returns the Code object for the body of the .cc file, which handles the
initialization of all features."""
c = Code()
c.Sblock()
for k in sorted(self._features.keys()):
c.Sblock('{')
feature = self._features[k]
c.Concat(feature.GetCode(self._feature_type))
c.Append('provider->AddFeature("%s", feature);' % k)
c.Eblock('}')
c.Eblock()
return c
def Generate(self):
"""Generates a Code object with the .dart for the entire namespace.
"""
c = Code()
(c.Append(LICENSE)
.Append()
.Append('// Generated from namespace: %s' % self._namespace.name)
.Append()
.Append('part of chrome;'))
if self._types:
(c.Append()
.Append('/**')
.Append(' * Types')
.Append(' */')
.Append()
)
for type_ in self._types.values():
# Check for custom dart for this whole type.
override = self._GetOverride([type_.name], document_with=type_)
c.Cblock(override if override is not None else self._GenerateType(type_))
if self._namespace.events:
(c.Append('/**')
.Append(' * Events')
.Append(' */')
.Append()
)
for event_name in self._namespace.events:
c.Cblock(self._GenerateEvent(self._namespace.events[event_name]))
(c.Append('/**')
.Append(' * Functions')
.Append(' */')
.Append()
)
c.Cblock(self._GenerateMainClass())
return c
def _GenerateMainClass(self):
"""Generates the main class for this file, which links to all functions
and events.
Returns a code object.
"""
c = Code()
(c.Sblock(
'class API_%s {' % self._namespace.unix_name).Append('/*').Append(
' * API connection').Append(' */').Append('Object _jsObject;'))
# Add events.
if self._namespace.events:
(c.Append().Append('/*').Append(' * Events').Append(' */'))
for event_name in self._namespace.events:
c.Append('Event_%s_%s %s;' %
(self._namespace.unix_name, event_name, event_name))
# Add functions.
if self._namespace.functions:
(c.Append().Append('/*').Append(' * Functions').Append(' */'))
for function in self._namespace.functions.values():
# Check for custom dart for this whole property.
override = self._GetOverride([function.name],
document_with=function)
c.Cblock(override if override is not None else self.
_GenerateFunction(function))
# Add the constructor.
c.Sblock('API_%s(this._jsObject) {' % self._namespace.unix_name)
# Add events to constructor.
for event_name in self._namespace.events:
c.Append("%s = new Event_%s_%s(JS('', '#.%s', this._jsObject));" %
(event_name, self._namespace.unix_name, event_name,
event_name))
(c.Eblock('}').Eblock('}'))
return c
def Write(self):
"""Writes the output."""
header_file = self._out_base_filename + '.h'
cc_file = self._out_base_filename + '.cc'
include_file_root = self._out_root[len(self._gen_dir_relpath) + 1:]
header_file_path = '%s/%s' % (include_file_root, header_file)
cc_file_path = '%s/%s' % (include_file_root, cc_file)
substitutions = ({
'header_file_path':
header_file_path,
'header_guard':
(header_file_path.replace('/', '_').replace('.', '_').upper()),
'method_name':
self._method_name,
'source_files':
str(self._source_files),
'year':
str(datetime.now().year)
})
if not os.path.exists(self._out_root):
os.makedirs(self._out_root)
# Write the .h file.
with open(os.path.join(self._out_root, header_file), 'w') as f:
header_file = Code()
header_file.Append(HEADER_FILE_TEMPLATE)
header_file.Substitute(substitutions)
f.write(header_file.Render().strip())
# Write the .cc file.
with open(os.path.join(self._out_root, cc_file), 'w') as f:
cc_file = Code()
cc_file.Append(CC_FILE_BEGIN)
cc_file.Substitute(substitutions)
cc_file.Concat(self.Render())
cc_end = Code()
cc_end.Append(CC_FILE_END)
cc_end.Substitute(substitutions)
cc_file.Concat(cc_end)
f.write(cc_file.Render().strip())
def _GenerateChoiceTypeToValue(self, cpp_namespace, type_):
"""Generates a function that serializes a choice-representing type
into a base::Value.
"""
c = Code()
c.Sblock('scoped_ptr<base::Value> %s::ToValue() const {' % cpp_namespace)
c.Append('scoped_ptr<base::Value> result;')
for choice in type_.choices:
choice_var = 'as_%s' % choice.unix_name
(c.Sblock('if (%s) {' % choice_var)
.Append('DCHECK(!result) << "Cannot set multiple choices for %s";' %
type_.unix_name)
.Append('result.reset(%s);' %
self._CreateValueFromType(choice, '*%s' % choice_var))
.Eblock('}')
)
(c.Append('DCHECK(result) << "Must set at least one choice for %s";' %
type_.unix_name)
.Append('return result.Pass();')
.Eblock('}')
)
return c