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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.
import code
import cpp_util
from schema_util import CapitalizeFirstLetter
from schema_util import JsFunctionNameToClassName
import json
import os
import re
# TODO(miket/asargent) - parameterize this.
SOURCE_BASE_PATH = 'chrome/common/extensions/api'
class SchemaBundleGenerator(object):
"""This class contains methods to generate code based on multiple schemas.
"""
def __init__(self, model, api_defs, cpp_type_generator):
self._model = model
self._api_defs = api_defs
self._cpp_type_generator = cpp_type_generator
def GenerateHeader(self, file_base, body_code):
"""Generates a code.Code object for a header file
Parameters:
- |file_base| - the base of the filename, e.g. 'foo' (for 'foo.h')
- |body_code| - the code to put in between the multiple inclusion guards"""
c = code.Code()
c.Append(cpp_util.CHROMIUM_LICENSE)
c.Append()
c.Append(cpp_util.GENERATED_BUNDLE_FILE_MESSAGE % SOURCE_BASE_PATH)
ifndef_name = cpp_util.GenerateIfndefName(SOURCE_BASE_PATH, file_base)
c.Append()
c.Append('#ifndef %s' % ifndef_name)
c.Append('#define %s' % ifndef_name)
c.Append()
c.Concat(body_code)
c.Append()
c.Append('#endif // %s' % ifndef_name)
c.Append()
return c
def GenerateAPIHeader(self):
"""Generates the header for API registration / declaration"""
c = code.Code()
c.Append('#include <string>')
c.Append()
c.Append('#include "base/basictypes.h"')
for namespace in self._model.namespaces.values():
namespace_name = namespace.unix_name.replace("experimental_", "")
c.Append('#include "chrome/browser/extensions/api/%s/%s_api.h"' % (
namespace_name, namespace_name))
c.Append()
c.Append("class ExtensionFunctionRegistry;")
c.Append()
c.Concat(self._cpp_type_generator.GetRootNamespaceStart())
for namespace in self._model.namespaces.values():
c.Append("// TODO(miket): emit code for %s" % (namespace.unix_name))
c.Append()
c.Concat(self.GenerateFunctionRegistry())
c.Concat(self._cpp_type_generator.GetRootNamespaceEnd())
c.Append()
return self.GenerateHeader('generated_api', c)
def GenerateFunctionRegistry(self):
c = code.Code()
c.Sblock("class GeneratedFunctionRegistry {")
c.Append("public:")
c.Sblock("static void RegisterAll(ExtensionFunctionRegistry* registry) {")
for namespace in self._model.namespaces.values():
namespace_name = CapitalizeFirstLetter(namespace.name.replace(
"experimental.", ""))
for function in namespace.functions.values():
if function.nocompile:
continue
function_name = JsFunctionNameToClassName(namespace.name, function.name)
c.Append("registry->RegisterFunction<%sFunction>();" % (
function_name))
c.Eblock("}")
c.Eblock("};")
c.Append()
return c
def GenerateSchemasHeader(self):
"""Generates a code.Code object for the generated schemas .h file"""
c = code.Code()
c.Append('#include <map>')
c.Append('#include <string>')
c.Append();
c.Append('#include "base/string_piece.h"')
c.Append()
c.Concat(self._cpp_type_generator.GetRootNamespaceStart())
c.Append()
c.Sblock('class GeneratedSchemas {')
c.Append('public:')
c.Append('// Puts all API schemas in |schemas|.')
c.Append('static void Get('
'std::map<std::string, base::StringPiece>* schemas);')
c.Eblock('};');
c.Append()
c.Concat(self._cpp_type_generator.GetRootNamespaceEnd())
c.Append()
return self.GenerateHeader('generated_schemas', c)
def GenerateSchemasCC(self):
"""Generates a code.Code object for the generated schemas .cc file"""
c = code.Code()
c.Append(cpp_util.CHROMIUM_LICENSE)
c.Append()
c.Append('#include "%s"' % (os.path.join(SOURCE_BASE_PATH,
'generated_schemas.h')))
c.Append()
c.Concat(self._cpp_type_generator.GetRootNamespaceStart())
c.Append()
c.Append('// static')
c.Sblock('void GeneratedSchemas::Get('
'std::map<std::string, base::StringPiece>* schemas) {')
for api in self._api_defs:
namespace = self._model.namespaces[api.get('namespace')]
# JSON parsing code expects lists of schemas, so dump a singleton list.
json_content = json.dumps([api], indent=2)
# Escape all double-quotes. Ignore already-escaped double-quotes.
json_content = re.sub('(?<!\\\\)"', '\\"', json_content)
lines = json_content.split('\n')
c.Append('(*schemas)["%s"] = ' % namespace.name)
for index, line in enumerate(lines):
line = ' "%s"' % line
if index == len(lines) - 1:
line += ';'
c.Append(line)
c.Eblock('}')
c.Append()
c.Concat(self._cpp_type_generator.GetRootNamespaceEnd())
c.Append()
return c
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