cef/tools/make_ctocpp_impl.py

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# Copyright (c) 2011 The Chromium Embedded Framework Authors. All rights
# reserved. Use of this source code is governed by a BSD-style license that
# can be found in the LICENSE file.
from cef_parser import *
def make_ctocpp_impl_proto(clsname, name, func, parts):
proto = parts['retval']+' '+clsname
const = ''
if isinstance(func, obj_function_virtual):
proto += 'CToCpp'
if func.is_const():
const = ' const'
proto += '::'+name+'('+string.join(parts['args'], ', ')+')'+const
return wrap_code(proto)
def make_ctocpp_impl_existing(clsname, name, func, impl):
# retrieve the C++ prototype parts
parts = func.get_cpp_parts(True)
changes = format_translation_changes(impl, parts)
if len(changes) > 0:
if isinstance(func, obj_function_virtual):
notify('Changed prototype for '+clsname+'CToCpp::'+name)
else:
notify('Changed prototype for '+clsname+'::'+name)
return make_ctocpp_impl_proto(clsname, name, func, parts)+'{'+ \
changes+impl['body']+'\n}\n\n'
def make_ctocpp_impl_new(clsname, name, func):
if isinstance(func, obj_function_virtual):
notify('Added implementation for '+clsname+'CToCpp::'+name)
else:
notify('Added implementation for '+clsname+'::'+name)
# retrieve the C++ prototype parts
parts = func.get_cpp_parts(True)
result = make_ctocpp_impl_proto(clsname, name, func, parts)+'{'
result += '\n // BEGIN DELETE BEFORE MODIFYING'
result += '\n // AUTO-GENERATED CONTENT'
result += '\n #pragma message("Warning: "__FILE__": '+name+' is not implemented")'
result += '\n // END DELETE BEFORE MODIFYING'
result += '\n if (CEF_MEMBER_MISSING(struct_, '+func.get_capi_name()+'))'
result += '\n return;'
result += '\n}\n\n'
return result
def make_ctocpp_impl(header, clsname, impl):
cls = header.get_class(clsname)
if cls is None:
raise Exception('Class does not exist: '+clsname)
capiname = cls.get_capi_name()
# retrieve the existing virtual function implementations
existing = get_function_impls(impl, clsname+'CToCpp::')
# generate virtual functions
virtualimpl = ''
funcs = cls.get_virtual_funcs()
for func in funcs:
name = func.get_name()
value = get_next_function_impl(existing, name)
if not value is None \
and value['body'].find('// AUTO-GEN') < 0:
# an implementation exists that was not auto-generated
virtualimpl += make_ctocpp_impl_existing(clsname, name, func,
value)
else:
virtualimpl += make_ctocpp_impl_new(clsname, name, func)
if len(virtualimpl) > 0:
virtualimpl = '\n// VIRTUAL METHODS - Body may be edited by hand.\n\n'+virtualimpl
# retrieve the existing static function implementations
existing = get_function_impls(impl, clsname+'::')
# generate static functions
staticimpl = ''
funcs = cls.get_static_funcs()
for func in funcs:
name = func.get_name()
value = get_next_function_impl(existing, name)
if not value is None \
and value['body'].find('// AUTO-GENERATED CONTENT') < 0:
# an implementation exists that was not auto-generated
staticimpl += make_ctocpp_impl_existing(clsname, name, func,
value)
else:
staticimpl += make_ctocpp_impl_new(clsname, name, func)
if len(staticimpl) > 0:
staticimpl = '\n// STATIC METHODS - Body may be edited by hand.\n\n'+staticimpl
resultingimpl = staticimpl + virtualimpl
# determine what includes are required by identifying what translation
# classes are being used
includes = format_translation_includes(resultingimpl)
# build the final output
result = \
"""// Copyright (c) 2011 The Chromium Embedded Framework Authors. All rights
// reserved. Use of this source code is governed by a BSD-style license that
// can be found in the LICENSE file.
//
// ---------------------------------------------------------------------------
//
// A portion of this file was generated by the CEF translator tool. When
// making changes by hand only do so within the body of existing static and
// virtual method implementations. See the translator.README.txt file in the
// tools directory for more information.
//
"""
result += includes+'\n'+resultingimpl+'\n'
result += wrap_code('#ifndef NDEBUG\n'+ \
'template<> long CefCToCpp<'+clsname+'CToCpp, '+clsname+', '+capiname+'>::DebugObjCt = 0;\n'+ \
'#endif\n')
return result
def write_ctocpp_impl(header, clsname, dir, backup):
file = dir+os.sep+get_capi_name(clsname[3:], False)+'_ctocpp.cc'
if path_exists(file):
oldcontents = read_file(file)
else:
oldcontents = ''
newcontents = make_ctocpp_impl(header, clsname, oldcontents)
if newcontents != oldcontents:
if backup and oldcontents != '':
backup_file(file)
write_file(file, newcontents)
return True
return False
# test the module
if __name__ == "__main__":
import sys
# verify that the correct number of command-line arguments are provided
if len(sys.argv) < 4:
sys.stderr.write('Usage: '+sys.argv[0]+' <infile> <classname> <existing_impl>')
sys.exit()
# create the header object
header = obj_header(sys.argv[1])
# read the existing implementation file into memory
try:
f = open(sys.argv[3], 'r')
data = f.read()
except IOError, (errno, strerror):
raise Exception('Failed to read file '+sys.argv[3]+': '+strerror)
else:
f.close()
# dump the result to stdout
sys.stdout.write(make_ctocpp_impl(header, sys.argv[2], data))