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# 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.
import os.path
from code import Code
import cpp_util
class CCGenerator(object):
def Generate(self, feature_defs, source_file, namespace):
return _Generator(feature_defs, source_file, namespace).Generate()
class _Generator(object):
"""A .cc generator for features.
"""
def __init__(self, feature_defs, source_file, namespace):
self._feature_defs = feature_defs
self._source_file = source_file
self._source_file_filename, _ = os.path.splitext(source_file)
self._class_name = cpp_util.ClassName(self._source_file_filename)
self._namespace = namespace
def Generate(self):
"""Generates a Code object for features.
"""
c = Code()
(c.Append(cpp_util.CHROMIUM_LICENSE)
.Append()
.Append(cpp_util.GENERATED_FEATURE_MESSAGE % self._source_file)
.Append()
.Append('#include <string>')
.Append()
.Append('#include "%s.h"' % self._source_file_filename)
.Append()
.Append('#include "base/logging.h"')
.Append()
.Concat(cpp_util.OpenNamespace(self._namespace))
.Append()
)
# Generate the constructor.
(c.Append('%s::%s() {' % (self._class_name, self._class_name))
.Sblock()
)
for feature in self._feature_defs:
c.Append('features_["%s"] = %s;'
% (feature.name, cpp_util.ConstantName(feature.name)))
(c.Eblock()
.Append('}')
.Append()
)
# Generate the ToString function.
(c.Append('const char* %s::ToString('
'%s::ID id) const {' % (self._class_name, self._class_name))
.Sblock()
.Append('switch (id) {')
.Sblock()
)
for feature in self._feature_defs:
c.Append('case %s: return "%s";' %
(cpp_util.ConstantName(feature.name), feature.name))
(c.Append('case kUnknown: break;')
.Append('case kEnumBoundary: break;')
.Eblock()
.Append('}')
.Append('NOTREACHED();')
.Append('return "";')
)
(c.Eblock()
.Append('}')
.Append()
)
# Generate the FromString function.
(c.Append('%s::ID %s::FromString('
'const std::string& id) const {'
% (self._class_name, self._class_name))
.Sblock()
.Append('const auto& it = features_.find(id);' % self._class_name)
.Append('return (it == features_.end()) ? kUnknown : it->second;')
.Eblock()
.Append('}')
.Append()
.Cblock(cpp_util.CloseNamespace(self._namespace))
)
return c
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