80 lines
2.1 KiB
Python
80 lines
2.1 KiB
Python
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#!/usr/bin/env python
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#
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# Compare the AST of Cppcheck and Clang
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#
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# Example usage:
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# cd cppcheck/tools
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# g++ `llvm-config-3.8 --cxxflags --ldflags` -lclang -o clang-ast clang-ast.cpp
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# python compare-ast-clang-and-cppcheck.py lib/token.cpp
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#
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# If you get such output:
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# - <Function...>
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# Then that means there is a missing function in the Cppcheck SymbolDatabase
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#
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import subprocess
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import sys
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sys.path.insert(0, '../addons')
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import cppcheckdata
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CLANG_AST = './clang-ast'
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CPPCHECK = '../cppcheck'
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def clang_ast(sourcefile):
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p = subprocess.Popen([CLANG_AST,sourcefile], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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comm = p.communicate()
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ret = []
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for line in comm[0].split('\n'):
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while len(line)>1 and line[-1] in ' \r\n':
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line = line[:-1]
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if line.find('/usr/') > 0:
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continue
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if line.startswith('<Function'):
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ret.append(line)
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ret.sort()
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return ret
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def cppcheck_ast(sourcefile):
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subprocess.call([CPPCHECK, '--dump', '--max-configs=1', sourcefile])
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data = cppcheckdata.parsedump(sourcefile + '.dump')
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cfg = data.configurations[0]
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ret = []
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for func in cfg.functions:
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s = '<Function'
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s = s + ' name="' + func.name + '"'
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s = s + ' filename="' + func.tokenDef.file + '"'
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s = s + ' line="' + str(func.tokenDef.linenr) + '"'
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s = s + '/>'
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ret.append(s)
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for scope in cfg.scopes:
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if scope.type != 'Function':
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continue
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argStart = scope.bodyStart
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while argStart and argStart.str != '(':
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argStart = argStart.previous
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s = '<Function'
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s = s + ' name="' + scope.className + '"'
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s = s + ' filename="' + argStart.file + '"'
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s = s + ' line="' + str(argStart.linenr) + '"'
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s = s + '/>'
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if s not in ret:
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ret.append(s)
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ret.sort()
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return ret
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print('Clang AST...')
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ast1 = clang_ast(sys.argv[1])
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print('Cppcheck AST...')
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ast2 = cppcheck_ast(sys.argv[1])
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#for func in ast2:
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# print(func)
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print('Compare...')
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for func in ast1:
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if func not in ast2:
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print('- ' + func)
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#for func in ast2:
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# if func not in ast1:
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# print('+ ' + func)
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