compare_ast_symdb.py: improved script for comparing cppcheck/clang ast etc

This commit is contained in:
Daniel Marjamäki 2020-10-31 14:57:12 +01:00
parent 661ff1e067
commit 6cf571af97
2 changed files with 102 additions and 59 deletions

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@ -1,59 +0,0 @@
# Example usage:
# python3 compare_ast.py lib/token.cpp
# python3 compare_ast.py "--project=compile_commands.json --file-filter=*/lib/somefile.c"
import glob
import os
import re
import sys
import subprocess
CPPCHECK = os.path.expanduser('~/cppcheck/cppcheck')
def run_cppcheck(cppcheck_parameters:str, clang:str):
cmd = f'{CPPCHECK} {cppcheck_parameters} {clang} --debug --verbose'
print(cmd)
p = subprocess.Popen(cmd.split(), stdout=subprocess.PIPE, stderr=subprocess.PIPE)
comm = p.communicate()
return comm[0].decode('utf-8', 'ignore')
def get_ast(debug):
debug = re.sub(r' f:0x[0-9a-fA-F]+', '', debug)
debug = re.sub(r" '[a-zA-Z0-9: *]+'", '', debug)
pos1 = debug.rfind('\n##AST\n')
if pos1 < 0:
return ''
pos1 = debug.find('\n', pos1) + 1
assert pos1 > 0
pos2 = debug.find("\n##", pos1)
if pos2 < 0:
return debug[pos1:]
return debug[pos1:pos2-1]
def compare_ast(cppcheck_parameters: str):
ast1 = get_ast(run_cppcheck(cppcheck_parameters, ''))
ast2 = get_ast(run_cppcheck(cppcheck_parameters, '--clang'))
if ast1 == ast2:
print(f"ast is the same for file {cppcheck_parameters}")
print('ast size:%i' % len(ast1))
else:
print(f"ast is not the same for file {cppcheck_parameters}")
print('saving cppcheck ast in file ast1 and clang ast in file ast2')
f = open('ast1', 'wt')
f.write(ast1)
f.close()
f = open('ast2', 'wt')
f.write(ast2)
f.close()
sys.exit(1)
for arg in sys.argv[1:]:
compare_ast(arg)

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tools/compare_ast_symdb.py Normal file
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# Example usage:
# python3 compare_ast.py lib/token.cpp
# python3 compare_ast.py "--project=compile_commands.json --file-filter=*/lib/somefile.c"
# check all files in a compile_commands.json:
# grep '"file":' compile_commands.json | grep -v test | sed 's|.*/curl/|"--project=compile_commands.json --file-filter=*|' | xargs python3 ~/cppcheck/tools/compare_ast.py
import glob
import os
import re
import sys
import subprocess
CPPCHECK = os.path.expanduser('~/cppcheck/cppcheck')
def run_cppcheck(cppcheck_parameters:str, clang:str):
cmd = f'{CPPCHECK} {cppcheck_parameters} {clang} --debug --verbose'
#print(cmd)
p = subprocess.Popen(cmd.split(), stdout=subprocess.PIPE, stderr=subprocess.PIPE)
comm = p.communicate()
return comm[0].decode('utf-8', 'ignore')
def get_ast(debug):
debug = re.sub(r' f:0x[0-9a-fA-F]+', '', debug)
debug = re.sub(r" '[a-zA-Z0-9: *]+'", '', debug)
pos1 = debug.rfind('\n##AST\n')
if pos1 < 0:
return ''
pos1 = debug.find('\n', pos1) + 1
assert pos1 > 0
pos2 = debug.find("\n##", pos1)
if pos2 < 0:
return debug[pos1:]
return debug[pos1:pos2-1]
def get_symdb(debug):
debug = re.sub(r'0x[0-9a-fA-F]+', '0x12345678', debug)
debug = re.sub(r'nestedIn: Struct', 'nestedIn: Class', debug)
debug = re.sub(r'classDef: struct', 'classDef: class', debug)
debug = re.sub(r'isInline: [a-z]+', 'isInline: ---', debug)
debug = re.sub(r'definedType: .*', 'definedType: ---', debug)
debug = re.sub(r'needInitialization: .*', 'needInitialization: ---', debug)
debug = re.sub(r'functionOf: .*', 'functionOf: ---', debug)
debug = re.sub(r'0x12345678 Struct', '0x12345678 Class', debug)
pos1 = debug.rfind('\n### Symbol database ###\n')
if pos1 < 0:
return ''
pos1 = debug.find('\n', pos1) + 1
assert pos1 > 0
pos2 = debug.find("\n##", pos1)
if pos2 < 0:
return debug[pos1:]
return debug[pos1:pos2-1]
def compare_ast_symdb(cppcheck_parameters: str):
same = True
debug1 = run_cppcheck(cppcheck_parameters, '')
debug2 = run_cppcheck(cppcheck_parameters, 'clang')
ast1 = get_ast(debug1)
ast2 = get_ast(debug2)
if ast1 != ast2:
print(f"ast is not the same: {cppcheck_parameters}")
print('saving file cppcheck.ast and clang.ast')
f = open('cppcheck.ast', 'wt')
f.write(ast1)
f.close()
f = open('clang.ast', 'wt')
f.write(ast2)
f.close()
same = False
symdb1 = get_symdb(debug1)
symdb2 = get_symdb(debug2)
if symdb1 != symdb2:
print(f"symdb is not the same: {cppcheck_parameters}")
print('saving file cppcheck.symdb and clang.symdb')
f = open('cppcheck.symdb', 'wt')
f.write(symdb1)
f.close()
f = open('clang.symdb', 'wt')
f.write(symdb2)
f.close()
same = False
if not same:
sys.exit(1)
for arg in sys.argv[1:]:
print(arg)
compare_ast_symdb(arg)