196 lines
6.0 KiB
C++
196 lines
6.0 KiB
C++
/*
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* Cppcheck - A tool for static C/C++ code analysis
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* Copyright (C) 2007-2009 Daniel Marjamäki, Reijo Tomperi, Nicolas Le Cam,
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* Leandro Penz, Kimmo Varis
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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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*/
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#ifndef TokenH
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#define TokenH
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#include <string>
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class Token
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{
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public:
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Token();
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~Token();
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void str(const char s[]);
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const std::string &str() const
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{
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return _str;
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}
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const char *aaaa() const
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{
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return _cstr;
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}
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char aaaa0() const
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{
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return _cstr[0];
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}
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char aaaa1() const
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{
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return _cstr[1];
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}
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/**
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* Unlink and delete next token.
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*/
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void deleteNext();
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/**
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* Returns token in given index, related to this token.
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* For example index 1 would return next token, and 2
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* would return next from that one.
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*/
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const Token *tokAt(int index) const;
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Token *tokAt(int index);
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const char *strAt(int index) const;
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/**
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* Match given token (or list of tokens) to a pattern list.
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*
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* Possible patterns
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* "someRandomText" If token contains "someRandomText".
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* @note Use Match() if you want to use flags in patterns
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*
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* The patterns can be also combined to compare to multiple tokens at once
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* by separating tokens with a space, e.g.
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* ") void {" will return true if first token is ')' next token
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* is "void" and token after that is '{'. If even one of the tokens does
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* not match its pattern, false is returned.
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*
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* @param tok List of tokens to be compared to the pattern
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* @param pattern The pattern against which the tokens are compared,
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* e.g. "const" or ") void {".
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* @return true if given token matches with given pattern
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* false if given token does not match with given pattern
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*/
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static bool simpleMatch(const Token *tok, const char pattern[]);
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/**
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* Match given token (or list of tokens) to a pattern list.
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*
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* Possible patterns
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* "%any%" any token
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* "%var%" any token which is a name or type e.g. "hello" or "int"
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* "%num%" Any numeric token, e.g. "23"
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* "%bool%" true or false
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* "%str%" Any token starting with "-character (C-string).
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* "%varid%" Match with parameter varid
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* "[abc]" Any of the characters 'a' or 'b' or 'c'
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* "int|void|char" Any of the strings, int, void or char
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* "int|void|char|" Any of the strings, int, void or char or empty string
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* "!!else" No tokens or any token that is not "else".
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* "someRandomText" If token contains "someRandomText".
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*
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* The patterns can be also combined to compare to multiple tokens at once
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* by separating tokens with a space, e.g.
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* ") const|void {" will return true if first token is ')' next token is either
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* "const" or "void" and token after that is '{'. If even one of the tokens does not
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* match its pattern, false is returned.
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*
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* @param tok List of tokens to be compared to the pattern
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* @param pattern The pattern against which the tokens are compared,
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* e.g. "const" or ") const|volatile| {".
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* @return true if given token matches with given pattern
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* false if given token does not match with given pattern
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*/
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static bool Match(const Token *tok, const char pattern[], unsigned int varid = 0);
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bool isName() const;
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bool isNumber() const;
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bool isBoolean() const;
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bool isStandardType() const;
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static const Token *findmatch(const Token *tok, const char pattern[], unsigned int varId = 0);
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/**
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* Needle is build from multiple alternatives. If one of
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* them is equal to haystack, return value is 1. If there
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* are no matches, but one alternative to needle is empty
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* string, return value is 0. If needle was not found, return
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* value is -1.
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*
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* @param needle e.g. "one|two" or "|one|two"
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* @param haystack e.g. "one", "two" or "invalid"
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* @return 1 if needle is found from the haystack
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* 0 if needle was empty string
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* -1 if needle was not found
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*/
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static int multiCompare(const char *needle, const char *haystack);
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unsigned int linenr() const;
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void linenr(unsigned int linenr);
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unsigned int fileIndex() const;
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void fileIndex(unsigned int fileIndex);
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Token *next() const;
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/**
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* Delete tokens between begin and end. E.g. if begin = 1
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* and end = 5, tokens 2,3 and 4 would be erased.
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*
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* @param begin Tokens after this will be erased.
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* @param end Tokens before this will be erased.
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*/
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static void eraseTokens(Token *begin, const Token *end);
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/**
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* Insert new token after this token. This function will handle
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* relations between next and previous token also.
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* @param str String for the new token.
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*/
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void insertToken(const char str[]);
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Token *previous() const;
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unsigned int varId() const;
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void varId(unsigned int id);
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/**
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* For debugging purposes, prints token and all tokens
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* followed by it.
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* @param title Title for the printout or use default parameter or 0
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* for no title.
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*/
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void printOut(const char *title = 0) const;
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private:
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void next(Token *next);
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void previous(Token *previous);
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std::string _str;
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char * _cstr;
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bool _isName;
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bool _isNumber;
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bool _isBoolean;
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unsigned int _varId;
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Token *_next;
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Token *_previous;
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unsigned int _fileIndex;
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unsigned int _linenr;
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};
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#endif // TokenH
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