mirror of
https://bitbucket.org/chromiumembedded/cef
synced 2025-06-05 21:39:12 +02:00
Rename CEF1 files from /trunk to /trunk/cef1 (issue #564).
git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@570 5089003a-bbd8-11dd-ad1f-f1f9622dbc98
This commit is contained in:
Marshall Greenblatt
576
cef1/tools/make_ctocpp_impl.py
Normal file
576
cef1/tools/make_ctocpp_impl.py
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@@ -0,0 +1,576 @@
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# Copyright (c) 2011 The Chromium Embedded Framework Authors. All rights
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# reserved. Use of this source code is governed by a BSD-style license that
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# can be found in the LICENSE file.
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from cef_parser import *
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def make_ctocpp_impl_proto(clsname, name, func, parts):
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const = ''
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if clsname is None:
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proto = 'CEF_GLOBAL '+parts['retval']+' '
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else:
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proto = parts['retval']+' '+clsname
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if isinstance(func, obj_function_virtual):
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proto += 'CToCpp'
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if func.is_const():
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const = ' const'
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proto += '::'
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proto += name+'('+string.join(parts['args'], ', ')+')'+const
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return proto
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def make_ctocpp_function_impl_existing(clsname, name, func, impl):
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notify(name+' has manual edits')
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# retrieve the C++ prototype parts
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parts = func.get_cpp_parts(True)
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changes = format_translation_changes(impl, parts)
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if len(changes) > 0:
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notify(name+' prototype changed')
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return wrap_code(make_ctocpp_impl_proto(clsname, name, func, parts))+'{'+ \
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changes+impl['body']+'\n}\n'
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def make_ctocpp_function_impl_new(clsname, name, func):
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# build the C++ prototype
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parts = func.get_cpp_parts(True)
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result = make_ctocpp_impl_proto(clsname, name, func, parts)+' {'
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invalid = []
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# retrieve the function arguments
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args = func.get_arguments()
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# determine the argument types
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for arg in args:
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if arg.get_arg_type() == 'invalid':
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invalid.append(arg.get_name())
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# retrieve the function return value
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retval = func.get_retval()
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retval_type = retval.get_retval_type()
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if retval_type == 'invalid':
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invalid.append('(return value)')
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retval_default = ''
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else:
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retval_default = retval.get_retval_default(False)
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if len(retval_default) > 0:
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retval_default = ' '+retval_default;
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# add revision check
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if func.has_attrib('revision_check'):
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result += '\n int build_revision = cef_build_revision();'\
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'\n if (build_revision != CEF_REVISION) {'\
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'\n // The libcef build revision does not match the CEF API revision.'\
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'\n DCHECK(false);'\
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'\n return'+retval_default+';'\
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'\n }\n'
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if isinstance(func, obj_function_virtual):
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# add the structure size check
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result += '\n if (CEF_MEMBER_MISSING(struct_, '+func.get_capi_name()+'))'
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result += '\n return'+retval_default+';\n'
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if len(invalid) > 0:
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notify(name+' could not be autogenerated')
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# code could not be auto-generated
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result += '\n // BEGIN DELETE BEFORE MODIFYING'
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result += '\n // AUTO-GENERATED CONTENT'
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result += '\n // COULD NOT IMPLEMENT DUE TO: '+string.join(invalid, ', ')
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result += '\n #pragma message("Warning: "__FILE__": '+name+' is not implemented")'
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result += '\n // END DELETE BEFORE MODIFYING'
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result += '\n}\n\n'
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return wrap_code(result)
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result += '\n // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING\n'
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result_len = len(result)
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optional = []
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# parameter verification
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for arg in args:
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arg_type = arg.get_arg_type()
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arg_name = arg.get_type().get_name()
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# skip optional params
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optional_params = arg.parent.get_attrib_list('optional_param')
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if not optional_params is None and arg_name in optional_params:
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optional.append(arg_name)
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continue
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comment = '\n // Verify param: '+arg_name+'; type: '+arg_type
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if arg_type == 'simple_byaddr' or arg_type == 'bool_byaddr':
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result += comment+\
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'\n DCHECK('+arg_name+');'\
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'\n if (!'+arg_name+')'\
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'\n return'+retval_default+';'
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elif arg_type == 'refptr_same' or arg_type == 'refptr_diff':
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result += comment+\
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'\n DCHECK('+arg_name+'.get());'\
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'\n if (!'+arg_name+'.get())'\
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'\n return'+retval_default+';'
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elif arg_type == 'string_byref_const':
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result += comment+\
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'\n DCHECK(!'+arg_name+'.empty());'\
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'\n if ('+arg_name+'.empty())'\
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'\n return'+retval_default+';'
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# check index params
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index_params = arg.parent.get_attrib_list('index_param')
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if not index_params is None and arg_name in index_params:
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result += comment+\
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'\n DCHECK_GE('+arg_name+', 0);'\
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'\n if ('+arg_name+' < 0)'\
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'\n return'+retval_default+';'
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if len(optional) > 0:
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result += '\n // Unverified params: '+string.join(optional,', ')
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if len(result) != result_len:
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result += '\n'
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result_len = len(result)
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# parameter translation
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params = []
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if isinstance(func, obj_function_virtual):
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params.append('struct_')
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for arg in args:
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arg_type = arg.get_arg_type()
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arg_name = arg.get_type().get_name()
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comment = '\n // Translate param: '+arg_name+'; type: '+arg_type
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if arg_type == 'simple_byval' or arg_type == 'simple_byaddr' or \
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arg_type == 'bool_byval':
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params.append(arg_name)
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elif arg_type == 'simple_byref' or arg_type == 'simple_byref_const' or \
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arg_type == 'struct_byref_const' or arg_type == 'struct_byref':
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params.append('&'+arg_name)
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elif arg_type == 'bool_byref':
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result += comment+\
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'\n int '+arg_name+'Int = '+arg_name+';'
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params.append('&'+arg_name+'Int')
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elif arg_type == 'bool_byaddr':
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result += comment+\
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'\n int '+arg_name+'Int = '+arg_name+'?*'+arg_name+':0;'
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params.append('&'+arg_name+'Int')
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elif arg_type == 'string_byref_const':
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params.append(arg_name+'.GetStruct()')
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elif arg_type == 'string_byref':
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params.append(arg_name+'.GetWritableStruct()')
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elif arg_type == 'refptr_same':
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refptr_class = arg.get_type().get_refptr_type()
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params.append(refptr_class+'CToCpp::Unwrap('+arg_name+')')
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elif arg_type == 'refptr_diff':
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refptr_class = arg.get_type().get_refptr_type()
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params.append(refptr_class+'CppToC::Wrap('+arg_name+')')
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elif arg_type == 'refptr_same_byref' or arg_type == 'refptr_diff_byref':
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refptr_class = arg.get_type().get_refptr_type()
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refptr_struct = arg.get_type().get_result_refptr_type_root()
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if arg_type == 'refptr_same_byref':
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assign = refptr_class+'CToCpp::Unwrap('+arg_name+')'
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else:
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assign = refptr_class+'CppToC::Wrap('+arg_name+')'
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result += comment+\
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'\n '+refptr_struct+'* '+arg_name+'Struct = NULL;'\
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'\n if ('+arg_name+'.get())'\
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'\n '+arg_name+'Struct = '+assign+';'\
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'\n '+refptr_struct+'* '+arg_name+'Orig = '+arg_name+'Struct;'
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params.append('&'+arg_name+'Struct')
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elif arg_type == 'string_vec_byref' or arg_type == 'string_vec_byref_const':
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result += comment+\
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'\n cef_string_list_t '+arg_name+'List = cef_string_list_alloc();'\
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'\n DCHECK('+arg_name+'List);'\
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'\n if ('+arg_name+'List)'\
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'\n transfer_string_list_contents('+arg_name+', '+arg_name+'List);'
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params.append(arg_name+'List')
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elif arg_type == 'string_map_single_byref' or arg_type == 'string_map_single_byref_const':
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result += comment+\
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'\n cef_string_map_t '+arg_name+'Map = cef_string_map_alloc();'\
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'\n DCHECK('+arg_name+'Map);'\
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'\n if ('+arg_name+'Map)'\
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'\n transfer_string_map_contents('+arg_name+', '+arg_name+'Map);'
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params.append(arg_name+'Map')
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elif arg_type == 'string_map_multi_byref' or arg_type == 'string_map_multi_byref_const':
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result += comment+\
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'\n cef_string_multimap_t '+arg_name+'Multimap = cef_string_multimap_alloc();'\
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'\n DCHECK('+arg_name+'Multimap);'\
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'\n if ('+arg_name+'Multimap)'\
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'\n transfer_string_multimap_contents('+arg_name+', '+arg_name+'Multimap);'
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params.append(arg_name+'Multimap')
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elif arg_type == 'simple_vec_byref' or arg_type == 'bool_vec_byref' or \
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arg_type == 'refptr_vec_same_byref' or arg_type == 'refptr_vec_diff_byref':
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count_func = arg.get_attrib_count_func()
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vec_type = arg.get_type().get_result_vector_type_root()
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if arg_type == 'refptr_vec_same_byref':
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refptr_class = arg.get_type().get_refptr_type()
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assign = refptr_class+'CToCpp::Unwrap('+arg_name+'[i])'
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elif arg_type == 'refptr_vec_diff_byref':
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refptr_class = arg.get_type().get_refptr_type()
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assign = refptr_class+'CppToC::Wrap('+arg_name+'[i])'
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else:
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assign = arg_name+'[i]'
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result += comment+\
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'\n size_t '+arg_name+'Size = '+arg_name+'.size();'\
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'\n size_t '+arg_name+'Count = std::max('+count_func+'(), '+arg_name+'Size);'\
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'\n '+vec_type+'* '+arg_name+'List = NULL;'\
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'\n if ('+arg_name+'Count > 0) {'\
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'\n '+arg_name+'List = new '+vec_type+'['+arg_name+'Count];'\
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'\n DCHECK('+arg_name+'List);'\
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'\n if ('+arg_name+'List) {'\
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'\n memset('+arg_name+'List, 0, sizeof('+vec_type+')*'+arg_name+'Count);'\
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'\n }'\
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'\n if ('+arg_name+'List && '+arg_name+'Size > 0) {'\
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'\n for (size_t i = 0; i < '+arg_name+'Size; ++i) {'\
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'\n '+arg_name+'List[i] = '+assign+';'\
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'\n }'\
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'\n }'\
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'\n }'
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params.append('&'+arg_name+'Count')
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params.append(arg_name+'List')
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elif arg_type == 'simple_vec_byref_const' or arg_type == 'bool_vec_byref_const' or \
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arg_type == 'refptr_vec_same_byref_const' or arg_type == 'refptr_vec_diff_byref_const':
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count_func = arg.get_attrib_count_func()
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vec_type = arg.get_type().get_result_vector_type_root()
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if arg_type == 'refptr_vec_same_byref_const':
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refptr_class = arg.get_type().get_refptr_type()
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assign = refptr_class+'CToCpp::Unwrap('+arg_name+'[i])'
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elif arg_type == 'refptr_vec_diff_byref_const':
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refptr_class = arg.get_type().get_refptr_type()
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assign = refptr_class+'CppToC::Wrap('+arg_name+'[i])'
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else:
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assign = arg_name+'[i]'
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result += comment+\
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'\n const size_t '+arg_name+'Count = '+arg_name+'.size();'\
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'\n '+vec_type+'* '+arg_name+'List = NULL;'\
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'\n if ('+arg_name+'Count > 0) {'\
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'\n '+arg_name+'List = new '+vec_type+'['+arg_name+'Count];'\
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'\n DCHECK('+arg_name+'List);'\
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'\n if ('+arg_name+'List) {'\
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'\n for (size_t i = 0; i < '+arg_name+'Count; ++i) {'\
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'\n '+arg_name+'List[i] = '+assign+';'\
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'\n }'\
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'\n }'\
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'\n }'
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params.append(arg_name+'Count')
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params.append(arg_name+'List')
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if len(result) != result_len:
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result += '\n'
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result_len = len(result)
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# execution
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result += '\n // Execute\n '
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if retval_type != 'none':
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# has a return value
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if retval_type == 'simple' or retval_type == 'bool':
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result += retval.get_type().get_result_simple_type_root()
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elif retval_type == 'string':
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result += 'cef_string_userfree_t'
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elif retval_type == 'refptr_same' or retval_type == 'refptr_diff':
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refptr_struct = retval.get_type().get_result_refptr_type_root()
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result += refptr_struct+'*'
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result += ' _retval = '
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if isinstance(func, obj_function_virtual):
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result += 'struct_->'
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result += func.get_capi_name()+'('
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if len(params) > 0:
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if not isinstance(func, obj_function_virtual):
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result += '\n '
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result += string.join(params,',\n ')
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result += ');\n'
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result_len = len(result)
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# parameter restoration
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for arg in args:
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arg_type = arg.get_arg_type()
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arg_name = arg.get_type().get_name()
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comment = '\n // Restore param:'+arg_name+'; type: '+arg_type
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if arg_type == 'bool_byref':
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result += comment+\
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'\n '+arg_name+' = '+arg_name+'Int?true:false;'
|
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elif arg_type == 'bool_byaddr':
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result += comment+\
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'\n if ('+arg_name+')'\
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'\n *'+arg_name+' = '+arg_name+'Int?true:false;'
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elif arg_type == 'refptr_same_byref' or arg_type == 'refptr_diff_byref':
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refptr_class = arg.get_type().get_refptr_type()
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refptr_struct = arg.get_type().get_result_refptr_type_root()
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if arg_type == 'refptr_same_byref':
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assign = refptr_class+'CToCpp::Wrap('+arg_name+'Struct)'
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else:
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assign = refptr_class+'CppToC::Unwrap('+arg_name+'Struct)'
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result += comment+\
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'\n if ('+arg_name+'Struct) {'\
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'\n if ('+arg_name+'Struct != '+arg_name+'Orig) {'\
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'\n '+arg_name+' = '+assign+';'\
|
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'\n }'\
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'\n } else {'\
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'\n '+arg_name+' = NULL;'\
|
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'\n }'
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elif arg_type == 'string_vec_byref':
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result += comment+\
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'\n if ('+arg_name+'List) {'\
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'\n '+arg_name+'.clear();'\
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'\n transfer_string_list_contents('+arg_name+'List, '+arg_name+');'\
|
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'\n cef_string_list_free('+arg_name+'List);'\
|
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'\n }'
|
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elif arg_type == 'string_vec_byref_const':
|
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result += comment+\
|
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'\n if ('+arg_name+'List)'\
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||||
'\n cef_string_list_free('+arg_name+'List);'
|
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elif arg_type == 'string_map_single_byref':
|
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result += comment+\
|
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'\n if ('+arg_name+'Map) {'\
|
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'\n '+arg_name+'.clear();'\
|
||||
'\n transfer_string_map_contents('+arg_name+'Map, '+arg_name+');'\
|
||||
'\n cef_string_map_free('+arg_name+'Map);'\
|
||||
'\n }'
|
||||
elif arg_type == 'string_map_single_byref_const':
|
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result += comment+\
|
||||
'\n if ('+arg_name+'Map)'\
|
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'\n cef_string_map_free('+arg_name+'Map);'
|
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elif arg_type == 'string_map_multi_byref':
|
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result += comment+\
|
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'\n if ('+arg_name+'Multimap) {'\
|
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'\n '+arg_name+'.clear();'\
|
||||
'\n transfer_string_multimap_contents('+arg_name+'Multimap, '+arg_name+');'\
|
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'\n cef_string_multimap_free('+arg_name+'Multimap);'\
|
||||
'\n }'
|
||||
elif arg_type == 'string_map_multi_byref_const':
|
||||
result += comment+\
|
||||
'\n if ('+arg_name+'Multimap)'\
|
||||
'\n cef_string_multimap_free('+arg_name+'Multimap);'
|
||||
elif arg_type == 'simple_vec_byref' or arg_type == 'bool_vec_byref' or \
|
||||
arg_type == 'refptr_vec_same_byref' or arg_type == 'refptr_vec_diff_byref':
|
||||
count_func = arg.get_attrib_count_func()
|
||||
vec_type = arg.get_type().get_result_vector_type_root()
|
||||
if arg_type == 'refptr_vec_same_byref':
|
||||
refptr_class = arg.get_type().get_refptr_type()
|
||||
assign = refptr_class+'CToCpp::Wrap('+arg_name+'List[i])'
|
||||
elif arg_type == 'refptr_vec_diff_byref':
|
||||
refptr_class = arg.get_type().get_refptr_type()
|
||||
assign = refptr_class+'CppToC::Unwrap('+arg_name+'List[i])'
|
||||
elif arg_type == 'bool_vec_byref':
|
||||
assign = arg_name+'List[i]?true:false'
|
||||
else:
|
||||
assign = arg_name+'List[i]'
|
||||
result += comment+\
|
||||
'\n '+arg_name+'.clear();'\
|
||||
'\n if ('+arg_name+'Count > 0 && '+arg_name+'List) {'\
|
||||
'\n for (size_t i = 0; i < '+arg_name+'Count; ++i) {'\
|
||||
'\n '+arg_name+'.push_back('+assign+');'\
|
||||
'\n }'\
|
||||
'\n delete [] '+arg_name+'List;'\
|
||||
'\n }'
|
||||
elif arg_type == 'simple_vec_byref_const' or arg_type == 'bool_vec_byref_const' or \
|
||||
arg_type == 'refptr_vec_same_byref_const' or arg_type == 'refptr_vec_diff_byref_const':
|
||||
result += comment+\
|
||||
'\n if ('+arg_name+'List)'\
|
||||
'\n delete [] '+arg_name+'List;'
|
||||
|
||||
if len(result) != result_len:
|
||||
result += '\n'
|
||||
result_len = len(result)
|
||||
|
||||
# special handling for the global CefShutdown function
|
||||
if name == 'CefShutdown' and isinstance(func.parent, obj_header):
|
||||
classes = func.parent.get_classes()
|
||||
|
||||
names = []
|
||||
for cls in classes:
|
||||
if cls.has_attrib('no_debugct_check'):
|
||||
continue;
|
||||
|
||||
if cls.is_library_side():
|
||||
names.append(cls.get_name()+'CToCpp')
|
||||
else:
|
||||
names.append(cls.get_name()+'CppToC')
|
||||
|
||||
if len(names) > 0:
|
||||
names = sorted(names)
|
||||
result += '\n#ifndef NDEBUG'\
|
||||
'\n // Check that all wrapper objects have been destroyed'
|
||||
for name in names:
|
||||
result += '\n DCHECK_EQ('+name+'::DebugObjCt, 0);';
|
||||
result += '\n#endif // !NDEBUG'
|
||||
|
||||
if len(result) != result_len:
|
||||
result += '\n'
|
||||
result_len = len(result)
|
||||
|
||||
# return translation
|
||||
if retval_type != 'none':
|
||||
# has a return value
|
||||
result += '\n // Return type: '+retval_type
|
||||
if retval_type == 'simple':
|
||||
result += '\n return _retval;'
|
||||
elif retval_type == 'bool':
|
||||
result += '\n return _retval?true:false;'
|
||||
elif retval_type == 'string':
|
||||
result += '\n CefString _retvalStr;'\
|
||||
'\n _retvalStr.AttachToUserFree(_retval);'\
|
||||
'\n return _retvalStr;'
|
||||
elif retval_type == 'refptr_same':
|
||||
refptr_class = retval.get_type().get_refptr_type()
|
||||
result += '\n return '+refptr_class+'CToCpp::Wrap(_retval);'
|
||||
elif retval_type == 'refptr_diff':
|
||||
refptr_class = retval.get_type().get_refptr_type()
|
||||
result += '\n return '+refptr_class+'CppToC::Unwrap(_retval);'
|
||||
|
||||
if len(result) != result_len:
|
||||
result += '\n'
|
||||
|
||||
result += '}\n'
|
||||
return wrap_code(result)
|
||||
|
||||
def make_ctocpp_function_impl(clsname, funcs, existing):
|
||||
impl = ''
|
||||
|
||||
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
|
||||
impl += make_ctocpp_function_impl_existing(clsname, name, func, value)
|
||||
else:
|
||||
impl += make_ctocpp_function_impl_new(clsname, name, func)
|
||||
|
||||
return impl
|
||||
|
||||
def make_ctocpp_class_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 = make_ctocpp_function_impl(clsname, cls.get_virtual_funcs(), existing)
|
||||
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 = make_ctocpp_function_impl(clsname, cls.get_static_funcs(), existing)
|
||||
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 = get_copyright()
|
||||
|
||||
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 make_ctocpp_global_impl(header, impl):
|
||||
# retrieve the existing global function implementations
|
||||
existing = get_function_impls(impl, 'CEF_GLOBAL')
|
||||
|
||||
# generate static functions
|
||||
impl = make_ctocpp_function_impl(None, header.get_funcs(), existing)
|
||||
if len(impl) > 0:
|
||||
impl = '\n// GLOBAL METHODS - Body may be edited by hand.\n\n'+impl
|
||||
|
||||
includes = ''
|
||||
|
||||
# include required headers for global functions
|
||||
filenames = []
|
||||
for func in header.get_funcs():
|
||||
filename = func.get_file_name()
|
||||
if not filename in filenames:
|
||||
includes += '#include "include/'+func.get_file_name()+'"\n' \
|
||||
'#include "include/capi/'+func.get_capi_file_name()+'"\n'
|
||||
filenames.append(filename)
|
||||
|
||||
# determine what includes are required by identifying what translation
|
||||
# classes are being used
|
||||
includes += format_translation_includes(impl)
|
||||
|
||||
# build the final output
|
||||
result = get_copyright()
|
||||
|
||||
result += includes+'\n// Define used to facilitate parsing.\n#define CEF_GLOBAL\n\n'+impl
|
||||
|
||||
return result
|
||||
|
||||
def write_ctocpp_impl(header, clsname, dir, backup):
|
||||
if clsname is None:
|
||||
# global file
|
||||
file = dir
|
||||
else:
|
||||
# class file
|
||||
file = dir+os.sep+get_capi_name(clsname[3:], False)+'_ctocpp.cc'
|
||||
|
||||
if path_exists(file):
|
||||
oldcontents = read_file(file)
|
||||
else:
|
||||
oldcontents = ''
|
||||
|
||||
if clsname is None:
|
||||
newcontents = make_ctocpp_global_impl(header, oldcontents)
|
||||
else:
|
||||
newcontents = make_ctocpp_class_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()
|
||||
header.add_file(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_class_impl(header, sys.argv[2], data))
|
||||
Reference in New Issue
Block a user