60 lines
1.6 KiB
Python
60 lines
1.6 KiB
Python
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# Example usage:
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# python3 compare_ast.py lib/token.cpp
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# python3 compare_ast.py "--project=compile_commands.json --file-filter=*/lib/somefile.c"
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import glob
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import os
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import re
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import sys
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import subprocess
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CPPCHECK = os.path.expanduser('~/cppcheck/cppcheck')
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def run_cppcheck(cppcheck_parameters:str, clang:str):
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cmd = f'{CPPCHECK} {cppcheck_parameters} {clang} --debug --verbose'
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print(cmd)
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p = subprocess.Popen(cmd.split(), stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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comm = p.communicate()
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return comm[0].decode('utf-8', 'ignore')
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def get_ast(debug):
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debug = re.sub(r' f:0x[0-9a-fA-F]+', '', debug)
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debug = re.sub(r" '[a-zA-Z0-9: *]+'", '', debug)
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pos1 = debug.rfind('\n##AST\n')
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if pos1 < 0:
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return ''
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pos1 = debug.find('\n', pos1) + 1
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assert pos1 > 0
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pos2 = debug.find("\n##", pos1)
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if pos2 < 0:
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return debug[pos1:]
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return debug[pos1:pos2-1]
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def compare_ast(cppcheck_parameters: str):
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ast1 = get_ast(run_cppcheck(cppcheck_parameters, ''))
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ast2 = get_ast(run_cppcheck(cppcheck_parameters, '--clang'))
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if ast1 == ast2:
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print(f"ast is the same for file {cppcheck_parameters}")
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print('ast size:%i' % len(ast1))
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else:
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print(f"ast is not the same for file {cppcheck_parameters}")
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print('saving cppcheck ast in file ast1 and clang ast in file ast2')
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f = open('ast1', 'wt')
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f.write(ast1);
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f.close()
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f = open('ast2', 'wt')
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f.write(ast2);
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f.close()
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sys.exit(1)
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for arg in sys.argv[1:]:
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compare_ast(arg)
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