cppcheck/tokenize.h

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2008-12-18 22:28:57 +01:00
/*
* cppcheck - c/c++ syntax checking
* Copyright (C) 2007-2008 Daniel Marjamäki, Reijo Tomperi, Nicolas Le Cam
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*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/
*/
//---------------------------------------------------------------------------
#ifndef tokenizeH
#define tokenizeH
//---------------------------------------------------------------------------
#include <list>
#include <string>
#include <map>
#include <vector>
#include "settings.h"
#include "errorlogger.h"
#include "token.h"
class Tokenizer
{
private:
// Deallocate lists..
void DeallocateTokens();
/**
* Helper function for "tokenize". This recursively parses into included header files.
*/
void tokenizeCode(std::istream &code, const unsigned int FileIndex=0);
public:
Tokenizer();
~Tokenizer();
/**
* Tokenize code
* @param code input stream for code
* @param FileName The filename
*/
void tokenize(std::istream &code, const char FileName[]);
/** Set variable id */
void setVarId();
/** Simplify tokenlist */
void simplifyTokenList();
// Helper functions for handling the tokens list..
static void deleteTokens(TOKEN *tok);
static const char *getParameterName( const TOKEN *ftok, int par );
static bool SameFileName( const char fname1[], const char fname2[] );
std::string fileLine( const TOKEN *tok ) const;
// Return size.
int SizeOfType(const char type[]) const;
void initTokens();
const std::vector<std::string> *getFiles() const;
void fillFunctionList();
const TOKEN *GetFunctionTokenByName( const char funcname[] ) const;
const TOKEN *tokens() const;
#ifndef UNIT_TESTING
private:
#endif
struct DefineSymbol
{
char *name;
char *value;
struct DefineSymbol *next;
};
/**
* Finds matching "}" for "{".
* @param tok The "{"
* @return The "}" that matches given parameter or 0 if not found.
*/
static const TOKEN *findClosing( const TOKEN *tok );
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void Define(const char Name[], const char Value[]);
void addtoken(const char str[], const unsigned int lineno, const unsigned int fileno);
/** Add braces to an if-block
* @return true if something is modified
* false if nothing is done.
*/
bool simplifyIfAddBraces();
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/** Simplify conditions
* @return true if something is modified
* false if nothing is done.
*/
bool simplifyConditions();
/** Remove reduntant code, e.g. if( false ) { int a; } should be
* removed, because it is never executed.
* @return true if something is modified
* false if nothing is done.
*/
bool removeReduntantConditions();
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/** Simplify casts
* @return true if something is modified
* false if nothing is done.
*/
bool simplifyCasts();
/** Simplify function calls - constant return value
* @return true if something is modified
* false if nothing is done.
*/
bool simplifyFunctionReturn();
/**
* A simplify function that replaces a variable with its value in cases
* when the value is known. e.g. "x=10; if(x)" => "x=10;if(10)"
*
* @param token The token list to check and modify.
* @return true if modifications to token-list are done.
* false if no modifications are done.
*/
bool simplifyKnownVariables();
TOKEN *_gettok(TOKEN *tok, int index);
void InsertTokens(TOKEN *dest, TOKEN *src, unsigned int n);
TOKEN *_tokensBack;
std::map<std::string, unsigned int> _typeSize;
std::vector<const TOKEN *> _functionList;
std::vector<std::string> _files;
struct DefineSymbol * _dsymlist;
TOKEN *_tokens;
};
//---------------------------------------------------------------------------
#endif