698 lines
23 KiB
Python
Executable File
698 lines
23 KiB
Python
Executable File
#!/usr/bin/python
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#
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# Cppcheck - A tool for static C/C++ code analysis
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# Copyright (C) 2007-2015 Daniel Marjamaeki and Cppcheck team.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import os
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import sys
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import re
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import glob
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import argparse
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class MatchCompiler:
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def __init__(self, verify_mode=False, show_skipped=False):
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self._verifyMode = verify_mode
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self._showSkipped = show_skipped
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self._reset()
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def _reset(self):
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self._rawMatchFunctions = []
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self._matchFunctionCache = {}
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def _generateCacheSignature(
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self, pattern, endToken=None, varId=None, isFindMatch=False):
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sig = pattern
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if endToken:
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sig += '|ENDTOKEN'
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else:
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sig += '|NO-ENDTOKEN'
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if varId:
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sig += '|VARID'
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else:
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sig += '|NO-VARID'
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if isFindMatch:
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sig += '|ISFINDMATCH'
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else:
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sig += '|NORMALMATCH'
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return sig
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def _lookupMatchFunctionId(
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self, pattern, endToken=None, varId=None, isFindMatch=False):
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signature = self._generateCacheSignature(
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pattern, endToken, varId, isFindMatch)
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if signature in self._matchFunctionCache:
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return self._matchFunctionCache[signature]
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return None
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def _insertMatchFunctionId(
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self, id, pattern, endToken=None, varId=None, isFindMatch=False):
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signature = self._generateCacheSignature(
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pattern, endToken, varId, isFindMatch)
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# function signature should not be in the cache
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assert(
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self._lookupMatchFunctionId(
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pattern,
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endToken,
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varId,
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isFindMatch) is None)
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self._matchFunctionCache[signature] = id
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def _compileCmd(self, tok):
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if tok == '%any%':
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return 'true'
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elif tok == '%bool%':
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return 'tok->isBoolean()'
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elif tok == '%char%':
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return '(tok->tokType()==Token::eChar)'
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elif tok == '%comp%':
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return 'tok->isComparisonOp()'
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elif tok == '%num%':
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return 'tok->isNumber()'
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elif tok == '%cop%':
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return 'tok->isConstOp()'
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elif tok == '%op%':
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return 'tok->isOp()'
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elif tok == '%or%':
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return '(tok->tokType() == Token::eBitOp && tok->str()==MatchCompiler::makeConstString("|") )'
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elif tok == '%oror%':
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return '(tok->tokType() == Token::eLogicalOp && tok->str()==MatchCompiler::makeConstString("||"))'
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elif tok == '%str%':
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return '(tok->tokType()==Token::eString)'
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elif tok == '%type%':
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return (
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'(tok->isName() && tok->varId()==0U && !tok->isKeyword())'
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)
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elif tok == '%name%':
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return 'tok->isName()'
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elif tok == '%var%':
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return '(tok->varId() != 0)'
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elif tok == '%varid%':
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return '(tok->isName() && tok->varId()==varid)'
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elif (len(tok) > 2) and (tok[0] == "%"):
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print("unhandled:" + tok)
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return (
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'(tok->str()==MatchCompiler::makeConstString("' + tok + '"))'
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)
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def _compilePattern(self, pattern, nr, varid,
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isFindMatch=False, tokenType="const Token"):
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ret = ''
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returnStatement = ''
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if isFindMatch:
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ret = '\n ' + tokenType + ' * tok = start_tok;\n'
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returnStatement = 'continue;\n'
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else:
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arg2 = ''
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if varid:
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arg2 = ', const unsigned int varid'
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ret = '// pattern: ' + pattern + '\n'
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ret += 'static bool match' + \
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str(nr) + '(' + tokenType + '* tok' + arg2 + ') {\n'
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returnStatement = 'return false;\n'
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tokens = pattern.split(' ')
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gotoNextToken = ''
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checked_varid = False
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for tok in tokens:
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if tok == '':
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continue
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ret += gotoNextToken
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gotoNextToken = ' tok = tok->next();\n'
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# if varid is provided, check that it's non-zero on first use
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if varid and tok.find('%varid%') != -1 and checked_varid is False:
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ret += ' if (varid==0U)\n'
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ret += ' throw InternalError(tok, "Internal error. Token::Match called with varid 0. Please report this to Cppcheck developers");\n'
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checked_varid = True
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# [abc]
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if (len(tok) > 2) and (tok[0] == '[') and (tok[-1] == ']'):
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ret += ' if (!tok || tok->str().size()!=1U || !strchr("' + tok[1:-1] + '", tok->str()[0]))\n'
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ret += ' ' + returnStatement
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# a|b|c
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elif tok.find('|') > 0:
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tokens2 = tok.split('|')
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logicalOp = None
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neg = None
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if "" in tokens2:
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ret += ' if (tok && ('
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logicalOp = ' || '
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neg = ''
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else:
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ret += ' if (!tok || !('
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logicalOp = ' || '
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neg = ''
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first = True
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for tok2 in tokens2:
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if tok2 == '':
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continue
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if not first:
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ret += logicalOp
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first = False
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ret += neg + self._compileCmd(tok2)
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if "" in tokens2:
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ret += '))\n'
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ret += ' tok = tok->next();\n'
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gotoNextToken = ''
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else:
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ret += '))\n'
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ret += ' ' + returnStatement
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# !!a
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elif tok[0:2] == "!!":
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ret += ' if (tok && tok->str() == MatchCompiler::makeConstString("' + tok[2:] + '"))\n'
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ret += ' ' + returnStatement
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gotoNextToken = ' tok = tok ? tok->next() : NULL;\n'
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else:
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ret += ' if (!tok || !' + self._compileCmd(tok) + ')\n'
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ret += ' ' + returnStatement
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if isFindMatch:
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ret += ' return start_tok;\n'
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else:
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ret += ' return true;\n'
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ret += '}\n'
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return ret
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def _compileFindPattern(self, pattern, findmatchnr, endToken, varId):
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more_args = ''
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endCondition = ''
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if endToken:
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more_args += ', const Token * end'
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endCondition = ' && start_tok != end'
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if varId:
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more_args += ', unsigned int varid'
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ret = '// pattern: ' + pattern + '\n'
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ret += 'template<class T> static T * findmatch' + \
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str(findmatchnr) + '(T * start_tok' + more_args + ') {\n'
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ret += ' for (; start_tok' + endCondition + \
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'; start_tok = start_tok->next()) {\n'
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ret += self._compilePattern(pattern, -1, varId, True, 'T')
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ret += ' }\n'
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ret += ' return NULL;\n}\n'
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return ret
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def parseMatch(self, line, pos1):
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parlevel = 0
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args = []
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argstart = 0
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pos = pos1
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inString = False
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while pos < len(line):
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if inString:
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if line[pos] == '\\':
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pos += 1
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elif line[pos] == '"':
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inString = False
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elif line[pos] == '"':
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inString = True
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elif line[pos] == '(':
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parlevel += 1
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if parlevel == 1:
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argstart = pos + 1
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elif line[pos] == ')':
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parlevel -= 1
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if parlevel == 0:
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ret = []
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ret.append(line[pos1:pos + 1])
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for arg in args:
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ret.append(arg)
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ret.append(line[argstart:pos])
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return ret
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elif line[pos] == ',' and parlevel == 1:
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args.append(line[argstart:pos])
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argstart = pos + 1
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pos += 1
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return None
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def _isInString(self, line, pos1):
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pos = 0
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inString = False
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while pos != pos1:
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if inString:
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if line[pos] == '\\':
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pos += 1
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elif line[pos] == '"':
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inString = False
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else:
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if line[pos] == '\\':
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pos += 1
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elif line[pos] == '"':
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inString = True
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pos += 1
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return inString
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def _parseStringComparison(self, line, pos1):
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startPos = 0
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endPos = 0
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pos = pos1
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inString = False
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while pos < len(line):
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if inString:
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if line[pos] == '\\':
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pos += 1
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elif line[pos] == '"':
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inString = False
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endPos = pos + 1
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return (startPos, endPos)
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elif line[pos] == '"':
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startPos = pos
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inString = True
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pos += 1
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return None
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def _compileVerifyTokenMatch(
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self, is_simplematch, verifyNumber, pattern, patternNumber, varId):
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more_args = ''
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if varId:
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more_args = ', const unsigned int varid'
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ret = 'static bool match_verify' + \
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str(verifyNumber) + '(const Token *tok' + more_args + ') {\n'
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origMatchName = 'Match'
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if is_simplematch:
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origMatchName = 'simpleMatch'
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assert(varId is None)
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ret += ' bool res_compiled_match = match' + \
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str(patternNumber) + '(tok'
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if varId:
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ret += ', varid'
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ret += ');\n'
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ret += ' bool res_parsed_match = Token::' + \
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origMatchName + '(tok, "' + pattern + '"'
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if varId:
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ret += ', varid'
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ret += ');\n'
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ret += '\n'
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# Don't use assert() here, it's disabled for optimized builds.
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# We also need to verify builds in 'release' mode
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ret += ' if (res_parsed_match != res_compiled_match) {\n'
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# ret += ' std::cout << "res_parsed_match' + str(verifyNumber) + ': " << res_parsed_match << ", res_compiled_match: " << res_compiled_match << "\\n";\n'
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# ret += ' if (tok)\n'
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# ret += ' std::cout << "tok: " << tok->str();\n'
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# ret += ' if (tok->next())\n'
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# ret += ' std::cout << "tok next: " << tok->next()->str();\n'
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ret += ' throw InternalError(tok, "Internal error. compiled match returned different result than parsed match: ' + pattern + '");\n'
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ret += ' }\n'
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ret += ' return res_compiled_match;\n'
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ret += '}\n'
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return ret
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def _replaceSpecificTokenMatch(
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self, is_simplematch, line, start_pos, end_pos, pattern, tok, varId):
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more_args = ''
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if varId:
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more_args = ',' + varId
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# Compile function or use previously compiled one
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patternNumber = self._lookupMatchFunctionId(
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pattern, None, varId, False)
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if patternNumber is None:
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patternNumber = len(self._rawMatchFunctions) + 1
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self._insertMatchFunctionId(
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patternNumber,
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pattern,
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None,
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varId,
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False)
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self._rawMatchFunctions.append(
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self._compilePattern(pattern, patternNumber, varId))
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functionName = "match"
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if self._verifyMode:
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verifyNumber = len(self._rawMatchFunctions) + 1
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self._rawMatchFunctions.append(
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self._compileVerifyTokenMatch(
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is_simplematch,
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verifyNumber,
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pattern,
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patternNumber,
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varId))
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# inject verify function
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functionName = "match_verify"
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patternNumber = verifyNumber
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return (
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line[:start_pos] + functionName + str(
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patternNumber) + '(' + tok + more_args + ')' + line[start_pos + end_pos:]
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)
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def _replaceTokenMatch(self, line):
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while True:
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is_simplematch = False
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pos1 = line.find('Token::Match(')
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if pos1 == -1:
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is_simplematch = True
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pos1 = line.find('Token::simpleMatch(')
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if pos1 == -1:
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break
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res = self.parseMatch(line, pos1)
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if res is None:
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break
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# assert that Token::Match has either 2 or 3 arguments
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assert(len(res) == 3 or len(res) == 4)
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end_pos = len(res[0])
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tok = res[1]
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raw_pattern = res[2]
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varId = None
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if len(res) == 4:
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varId = res[3]
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res = re.match(r'\s*"((?:.|\\")*?)"\s*$', raw_pattern)
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if res is None:
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if self._showSkipped:
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print("[SKIPPING] match pattern: " + raw_pattern)
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break # Non-const pattern - bailout
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pattern = res.group(1)
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line = self._replaceSpecificTokenMatch(
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is_simplematch,
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line,
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pos1,
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end_pos,
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pattern,
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tok,
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varId)
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return line
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def _compileVerifyTokenFindMatch(
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self, is_findsimplematch, verifyNumber, pattern, patternNumber, endToken, varId):
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more_args = ''
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if endToken:
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more_args += ', const Token * endToken'
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if varId:
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more_args += ', const unsigned int varid'
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ret = 'template < class T > static T * findmatch_verify' + \
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str(verifyNumber) + '(T * tok' + more_args + ') {\n'
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origFindMatchName = 'findmatch'
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if is_findsimplematch:
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origFindMatchName = 'findsimplematch'
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assert(varId is None)
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ret += ' T * res_compiled_findmatch = findmatch' + \
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str(patternNumber) + '(tok'
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if endToken:
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ret += ', endToken'
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if varId:
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ret += ', varid'
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ret += ');\n'
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ret += ' T * res_parsed_findmatch = Token::' + \
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origFindMatchName + '(tok, "' + pattern + '"'
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if endToken:
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ret += ', endToken'
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if varId:
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ret += ', varid'
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ret += ');\n'
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ret += '\n'
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# Don't use assert() here, it's disabled for optimized builds.
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# We also need to verify builds in 'release' mode
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ret += ' if (res_parsed_findmatch != res_compiled_findmatch) {\n'
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ret += ' throw InternalError(tok, "Internal error. compiled findmatch returned different result than parsed findmatch: ' + pattern + '");\n'
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ret += ' }\n'
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ret += ' return res_compiled_findmatch;\n'
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ret += '}\n'
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return ret
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def _replaceSpecificFindTokenMatch(
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self, is_findsimplematch, line, start_pos, end_pos, pattern, tok, endToken, varId):
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more_args = ''
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if endToken:
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more_args += ',' + endToken
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if varId:
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more_args += ',' + varId
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# Compile function or use previously compiled one
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findMatchNumber = self._lookupMatchFunctionId(
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pattern, endToken, varId, True)
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if findMatchNumber is None:
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findMatchNumber = len(self._rawMatchFunctions) + 1
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self._insertMatchFunctionId(
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findMatchNumber,
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pattern,
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endToken,
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varId,
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True)
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self._rawMatchFunctions.append(
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self._compileFindPattern(
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pattern,
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findMatchNumber,
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endToken,
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varId))
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functionName = "findmatch"
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if self._verifyMode:
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verifyNumber = len(self._rawMatchFunctions) + 1
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self._rawMatchFunctions.append(
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self._compileVerifyTokenFindMatch(
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is_findsimplematch,
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verifyNumber,
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pattern,
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findMatchNumber,
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endToken,
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varId))
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# inject verify function
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functionName = "findmatch_verify"
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findMatchNumber = verifyNumber
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return (
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line[:start_pos] + functionName + str(
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findMatchNumber) + '(' + tok + more_args + ') ' + line[start_pos + end_pos:]
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)
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def _replaceTokenFindMatch(self, line):
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pos1 = 0
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while True:
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is_findsimplematch = True
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pos1 = line.find('Token::findsimplematch(')
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if pos1 == -1:
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is_findsimplematch = False
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pos1 = line.find('Token::findmatch(')
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if pos1 == -1:
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break
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res = self.parseMatch(line, pos1)
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if res is None:
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break
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assert(len(res) >= 3 or len(res) < 6)
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# assert that Token::find(simple)match has either 2, 3 or
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# four arguments
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g0 = res[0]
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tok = res[1]
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pattern = res[2]
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# Check for varId
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varId = None
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if not is_findsimplematch and g0.find("%varid%") != -1:
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if len(res) == 5:
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varId = res[4]
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else:
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varId = res[3]
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# endToken support. We resolve the overloaded type by checking if varId is used or not.
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# Function protoypes:
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# Token *findsimplematch(const Token *tok, const char pattern[]);
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# Token *findsimplematch(const Token *tok, const char pattern[], const Token *end);
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# Token *findmatch(const Token *tok, const char pattern[], unsigned int varId = 0);
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# Token *findmatch(const Token *tok, const char pattern[], const
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# Token *end, unsigned int varId = 0);
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endToken = None
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if is_findsimplematch is True and len(res) == 4:
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endToken = res[3]
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elif is_findsimplematch is False:
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if varId and len(res) == 5:
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endToken = res[3]
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elif varId is None and len(res) == 4:
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endToken = res[3]
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res = re.match(r'\s*"((?:.|\\")*?)"\s*$', pattern)
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if res is None:
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if self._showSkipped:
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print("[SKIPPING] findmatch pattern: " + pattern)
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break # Non-const pattern - bailout
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pattern = res.group(1)
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line = self._replaceSpecificFindTokenMatch(
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is_findsimplematch,
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line,
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pos1,
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len(g0),
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pattern,
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tok,
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endToken,
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varId)
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return line
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def _replaceCStrings(self, line):
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while True:
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match = re.search('(==|!=) *"', line)
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if not match:
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break
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if self._isInString(line, match.start()):
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break
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res = self._parseStringComparison(line, match.start())
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if res is None:
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break
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startPos = res[0]
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endPos = res[1]
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text = line[startPos + 1:endPos - 1]
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line = line[:startPos] + 'MatchCompiler::makeConstStringBegin' + text + 'MatchCompiler::makeConstStringEnd' + line[endPos:]
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line = line.replace('MatchCompiler::makeConstStringBegin', 'MatchCompiler::makeConstString("')
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line = line.replace('MatchCompiler::makeConstStringEnd', '")')
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return line
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def convertFile(self, srcname, destname, line_directive):
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self._reset()
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fin = open(srcname, "rt")
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srclines = fin.readlines()
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fin.close()
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header = '#include "token.h"\n'
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header += '#include "errorlogger.h"\n'
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header += '#include "matchcompiler.h"\n'
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header += '#include <string>\n'
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header += '#include <cstring>\n'
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# header += '#include <iostream>\n'
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code = ''
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for line in srclines:
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# Compile Token::Match and Token::simpleMatch
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line = self._replaceTokenMatch(line)
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|
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# Compile Token::findsimplematch
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line = self._replaceTokenFindMatch(line)
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# Cache plain C-strings in C++ strings
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line = self._replaceCStrings(line)
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|
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code += line
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|
|
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# Compute matchFunctions
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strFunctions = ''
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for function in self._rawMatchFunctions:
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strFunctions += function
|
|
|
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lineno = ''
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|
if line_directive:
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lineno = '#line 1 "' + srcname + '"\n'
|
|
|
|
fout = open(destname, 'wt')
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fout.write(header + strFunctions + lineno + code)
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fout.close()
|
|
|
|
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def main():
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# Main program
|
|
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# Argument handling
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parser = argparse.ArgumentParser(
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description='Compile Token::Match() calls into native C++ code')
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parser.add_argument('--verify', action='store_true', default=False,
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help='verify compiled matches against on-the-fly parser. Slow!')
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parser.add_argument('--show-skipped', action='store_true', default=False,
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|
help='show skipped (non-static) patterns')
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parser.add_argument('--read-dir', default="lib",
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|
help='directory from which files are read')
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|
parser.add_argument('--write-dir', default="build",
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|
help='directory into which files are written')
|
|
parser.add_argument('--prefix', default="",
|
|
help='prefix for build files')
|
|
parser.add_argument('--line', action='store_true', default=False,
|
|
help='add line directive to input files into build files')
|
|
parser.add_argument('file', nargs='*',
|
|
help='file to complile')
|
|
args = parser.parse_args()
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|
lib_dir = args.read_dir
|
|
build_dir = args.write_dir
|
|
line_directive = args.line
|
|
files = args.file
|
|
|
|
# Check if we are invoked from the right place
|
|
if not os.path.exists(lib_dir):
|
|
print('Directory "' + lib_dir + '"not found.')
|
|
sys.exit(-1)
|
|
|
|
# Create build directory if needed
|
|
if not os.path.exists(build_dir):
|
|
os.makedirs(build_dir)
|
|
if not os.path.isdir(build_dir):
|
|
raise Exception(build_dir + ' is not a directory')
|
|
|
|
mc = MatchCompiler(verify_mode=args.verify,
|
|
show_skipped=args.show_skipped)
|
|
|
|
if not files:
|
|
# select all *.cpp files in lib_dir
|
|
for f in glob.glob(lib_dir + '/*.cpp'):
|
|
files.append(f[len(lib_dir) + 1:])
|
|
|
|
# convert files
|
|
for fi in files:
|
|
pi = lib_dir + '/' + fi
|
|
fo = args.prefix + fi
|
|
po = build_dir + '/' + fo
|
|
print(pi + ' => ' + po)
|
|
mc.convertFile(pi, po, line_directive)
|
|
|
|
if __name__ == '__main__':
|
|
main()
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