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# Copyright (c) 2012 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.
"""Utilies and constants specific to Chromium C++ code.
"""
from code import Code
from datetime import datetime
from model import PropertyType
import os
import re
CHROMIUM_LICENSE = (
"""// Copyright (c) %d 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.""" % datetime.now().year
)
GENERATED_FILE_MESSAGE = """// GENERATED FROM THE API DEFINITION IN
// %s
// DO NOT EDIT.
"""
GENERATED_BUNDLE_FILE_MESSAGE = """// GENERATED FROM THE API DEFINITIONS IN
// %s
// DO NOT EDIT.
"""
GENERATED_FEATURE_MESSAGE = """// GENERATED FROM THE FEATURE DEFINITIONS IN
// %s
// DO NOT EDIT.
"""
def Classname(s):
"""Translates a namespace name or function name into something more
suited to C++.
eg experimental.downloads -> Experimental_Downloads
updateAll -> UpdateAll.
"""
if s == '':
return 'EMPTY_STRING'
return '_'.join([x[0].upper() + x[1:] for x in re.split('\W', s)])
def GetAsFundamentalValue(type_, src, dst):
"""Returns the C++ code for retrieving a fundamental type from a
Value into a variable.
src: Value*
dst: Property*
"""
return {
PropertyType.BOOLEAN: '%s->GetAsBoolean(%s)',
PropertyType.DOUBLE: '%s->GetAsDouble(%s)',
PropertyType.INTEGER: '%s->GetAsInteger(%s)',
PropertyType.STRING: '%s->GetAsString(%s)',
}[type_.property_type] % (src, dst)
def GetValueType(type_):
"""Returns the Value::Type corresponding to the model.Type.
"""
return {
PropertyType.ARRAY: 'base::Value::TYPE_LIST',
PropertyType.BINARY: 'base::Value::TYPE_BINARY',
PropertyType.BOOLEAN: 'base::Value::TYPE_BOOLEAN',
# PropertyType.CHOICES can be any combination of types.
PropertyType.DOUBLE: 'base::Value::TYPE_DOUBLE',
PropertyType.ENUM: 'base::Value::TYPE_STRING',
PropertyType.FUNCTION: 'base::Value::TYPE_DICTIONARY',
PropertyType.INTEGER: 'base::Value::TYPE_INTEGER',
PropertyType.OBJECT: 'base::Value::TYPE_DICTIONARY',
PropertyType.STRING: 'base::Value::TYPE_STRING',
}[type_.property_type]
def GetParameterDeclaration(param, type_):
"""Gets a parameter declaration of a given model.Property and its C++
type.
"""
if param.type_.property_type in (PropertyType.ANY,
PropertyType.ARRAY,
PropertyType.BINARY,
PropertyType.CHOICES,
PropertyType.OBJECT,
PropertyType.REF,
PropertyType.STRING):
arg = 'const %(type)s& %(name)s'
else:
arg = '%(type)s %(name)s'
return arg % {
'type': type_,
'name': param.unix_name,
}
def GenerateIfndefName(file_path):
"""Formats |file_path| as a #define name. Presumably |file_path| is a header
file, or there's little point in generating a #define for it.
e.g chrome/extensions/gen/file.h becomes CHROME_EXTENSIONS_GEN_FILE_H__.
"""
return (('%s__' % file_path).upper()
.replace('\\', '_')
.replace('/', '_')
.replace('.', '_'))
def PadForGenerics(var):
"""Appends a space to |var| if it ends with a >, so that it can be compiled
within generic types.
"""
return ('%s ' % var) if var.endswith('>') else var
def OpenNamespace(cpp_namespace):
"""Get opening root namespace declarations.
"""
c = Code()
for component in cpp_namespace.split('::'):
c.Append('namespace %s {' % component)
return c
def CloseNamespace(cpp_namespace):
"""Get closing root namespace declarations.
"""
c = Code()
for component in reversed(cpp_namespace.split('::')):
c.Append('} // namespace %s' % component)
return c
def ConstantName(feature_name):
"""Returns a kName for a feature's name.
"""
return ('k' + ''.join(word[0].upper() + word[1:]
for word in feature_name.replace('.', ' ').split()))
def CamelCase(unix_name):
return ''.join(word.capitalize() for word in unix_name.split('_'))
def ClassName(filepath):
return CamelCase(os.path.split(filepath)[1])
def GetCppNamespace(pattern, namespace):
'''Returns the C++ namespace given |pattern| which includes a %(namespace)s
substitution, and the |namespace| to substitute. It is expected that |pattern|
has been passed as a flag to compiler.py from GYP/GN.
'''
# For some reason Windows builds escape the % characters, so unescape them.
# This means that %% can never appear legitimately within a pattern, but
# that's ok. It should never happen.
cpp_namespace = pattern.replace('%%', '%') % { 'namespace': namespace }
assert '%' not in cpp_namespace, \
('Did not manage to fully substitute namespace "%s" into pattern "%s"'
% (namespace, pattern))
return cpp_namespace
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