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-rwxr-xr-xgooglemock/scripts/generator/cpp/gmock_class.py247
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diff --git a/googlemock/scripts/generator/cpp/gmock_class.py b/googlemock/scripts/generator/cpp/gmock_class.py
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-#!/usr/bin/env python
-#
-# Copyright 2008 Google Inc. All Rights Reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-"""Generate Google Mock classes from base classes.
-
-This program will read in a C++ source file and output the Google Mock
-classes for the specified classes. If no class is specified, all
-classes in the source file are emitted.
-
-Usage:
- gmock_class.py header-file.h [ClassName]...
-
-Output is sent to stdout.
-"""
-
-import os
-import re
-import sys
-
-from cpp import ast
-from cpp import utils
-
-# Preserve compatibility with Python 2.3.
-try:
- _dummy = set
-except NameError:
- import sets
-
- set = sets.Set
-
-_VERSION = (1, 0, 1) # The version of this script.
-# How many spaces to indent. Can set me with the INDENT environment variable.
-_INDENT = 2
-
-
-def _RenderType(ast_type):
- """Renders the potentially recursively templated type into a string.
-
- Args:
- ast_type: The AST of the type.
-
- Returns:
- Rendered string of the type.
- """
- # Add modifiers like 'const'.
- modifiers = ''
- if ast_type.modifiers:
- modifiers = ' '.join(ast_type.modifiers) + ' '
- return_type = modifiers + ast_type.name
- if ast_type.templated_types:
- # Collect template args.
- template_args = []
- for arg in ast_type.templated_types:
- rendered_arg = _RenderType(arg)
- template_args.append(rendered_arg)
- return_type += '<' + ', '.join(template_args) + '>'
- if ast_type.pointer:
- return_type += '*'
- if ast_type.reference:
- return_type += '&'
- return return_type
-
-
-def _GenerateArg(source):
- """Strips out comments, default arguments, and redundant spaces from a single argument.
-
- Args:
- source: A string for a single argument.
-
- Returns:
- Rendered string of the argument.
- """
- # Remove end of line comments before eliminating newlines.
- arg = re.sub(r'//.*', '', source)
-
- # Remove c-style comments.
- arg = re.sub(r'/\*.*\*/', '', arg)
-
- # Remove default arguments.
- arg = re.sub(r'=.*', '', arg)
-
- # Collapse spaces and newlines into a single space.
- arg = re.sub(r'\s+', ' ', arg)
- return arg.strip()
-
-
-def _EscapeForMacro(s):
- """Escapes a string for use as an argument to a C++ macro."""
- paren_count = 0
- for c in s:
- if c == '(':
- paren_count += 1
- elif c == ')':
- paren_count -= 1
- elif c == ',' and paren_count == 0:
- return '(' + s + ')'
- return s
-
-
-def _GenerateMethods(output_lines, source, class_node):
- function_type = (
- ast.FUNCTION_VIRTUAL | ast.FUNCTION_PURE_VIRTUAL | ast.FUNCTION_OVERRIDE)
- ctor_or_dtor = ast.FUNCTION_CTOR | ast.FUNCTION_DTOR
- indent = ' ' * _INDENT
-
- for node in class_node.body:
- # We only care about virtual functions.
- if (isinstance(node, ast.Function) and node.modifiers & function_type and
- not node.modifiers & ctor_or_dtor):
- # Pick out all the elements we need from the original function.
- modifiers = 'override'
- if node.modifiers & ast.FUNCTION_CONST:
- modifiers = 'const, ' + modifiers
-
- return_type = 'void'
- if node.return_type:
- return_type = _EscapeForMacro(_RenderType(node.return_type))
-
- args = []
- for p in node.parameters:
- arg = _GenerateArg(source[p.start:p.end])
- if arg != 'void':
- args.append(_EscapeForMacro(arg))
-
- # Create the mock method definition.
- output_lines.extend([
- '%sMOCK_METHOD(%s, %s, (%s), (%s));' %
- (indent, return_type, node.name, ', '.join(args), modifiers)
- ])
-
-
-def _GenerateMocks(filename, source, ast_list, desired_class_names):
- processed_class_names = set()
- lines = []
- for node in ast_list:
- if (isinstance(node, ast.Class) and node.body and
- # desired_class_names being None means that all classes are selected.
- (not desired_class_names or node.name in desired_class_names)):
- class_name = node.name
- parent_name = class_name
- processed_class_names.add(class_name)
- class_node = node
- # Add namespace before the class.
- if class_node.namespace:
- lines.extend(['namespace %s {' % n for n in class_node.namespace]) # }
- lines.append('')
-
- # Add template args for templated classes.
- if class_node.templated_types:
- # TODO(paulchang): Handle non-type template arguments (e.g.
- # template<typename T, int N>).
-
- # class_node.templated_types is an OrderedDict from strings to a tuples.
- # The key is the name of the template, and the value is
- # (type_name, default). Both type_name and default could be None.
- template_args = class_node.templated_types.keys()
- template_decls = ['typename ' + arg for arg in template_args]
- lines.append('template <' + ', '.join(template_decls) + '>')
- parent_name += '<' + ', '.join(template_args) + '>'
-
- # Add the class prolog.
- lines.append('class Mock%s : public %s {' # }
- % (class_name, parent_name))
- lines.append('%spublic:' % (' ' * (_INDENT // 2)))
-
- # Add all the methods.
- _GenerateMethods(lines, source, class_node)
-
- # Close the class.
- if lines:
- # If there are no virtual methods, no need for a public label.
- if len(lines) == 2:
- del lines[-1]
-
- # Only close the class if there really is a class.
- lines.append('};')
- lines.append('') # Add an extra newline.
-
- # Close the namespace.
- if class_node.namespace:
- for i in range(len(class_node.namespace) - 1, -1, -1):
- lines.append('} // namespace %s' % class_node.namespace[i])
- lines.append('') # Add an extra newline.
-
- if desired_class_names:
- missing_class_name_list = list(desired_class_names - processed_class_names)
- if missing_class_name_list:
- missing_class_name_list.sort()
- sys.stderr.write('Class(es) not found in %s: %s\n' %
- (filename, ', '.join(missing_class_name_list)))
- elif not processed_class_names:
- sys.stderr.write('No class found in %s\n' % filename)
-
- return lines
-
-
-def main(argv=sys.argv):
- if len(argv) < 2:
- sys.stderr.write('Google Mock Class Generator v%s\n\n' %
- '.'.join(map(str, _VERSION)))
- sys.stderr.write(__doc__)
- return 1
-
- global _INDENT
- try:
- _INDENT = int(os.environ['INDENT'])
- except KeyError:
- pass
- except:
- sys.stderr.write('Unable to use indent of %s\n' % os.environ.get('INDENT'))
-
- filename = argv[1]
- desired_class_names = None # None means all classes in the source file.
- if len(argv) >= 3:
- desired_class_names = set(argv[2:])
- source = utils.ReadFile(filename)
- if source is None:
- return 1
-
- builder = ast.BuilderFromSource(source, filename)
- try:
- entire_ast = filter(None, builder.Generate())
- except KeyboardInterrupt:
- return
- except:
- # An error message was already printed since we couldn't parse.
- sys.exit(1)
- else:
- lines = _GenerateMocks(filename, source, entire_ast, desired_class_names)
- sys.stdout.write('\n'.join(lines))
-
-
-if __name__ == '__main__':
- main(sys.argv)