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/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2012 Daniel Marjamäki and Cppcheck team.
*
* 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 templatesimplifierH
#define templatesimplifierH
//---------------------------------------------------------------------------
#include <set>
#include <list>
#include <string>
#include <vector>
#include "config.h"
class Token;
class TokenList;
class ErrorLogger;
class Settings;
/// @addtogroup Core
/// @{
/** @brief Simplify templates from the preprocessed and partially simplified code. */
class CPPCHECKLIB TemplateSimplifier {
TemplateSimplifier();
~TemplateSimplifier();
public:
/**
* Used after simplifyTemplates to perform a little cleanup.
* Sometimes the simplifyTemplates isn't fully successful and then
* there are function calls etc with "wrong" syntax.
*/
static void cleanupAfterSimplify(Token *tokens);
/**
* @return 0 if there are no syntax errors or return token which identifies
* the location of syntax error.
*/
static const Token* hasComplicatedSyntaxErrorsInTemplates(Token *tokens);
/**
* is the token pointing at a template parameters block
* < int , 3 > => yes
* \param tok start token that must point at "<"
* \return number of parameters (invalid parameters => 0)
*/
static unsigned int templateParameters(const Token *tok);
/**
* Expand specialized templates : "template<>.."
* @return names of expanded templates
*/
static std::set<std::string> simplifyTemplatesExpandSpecialized(Token *tokens);
/**
* Get template declarations
* @return list of template declarations
*/
static std::list<Token *> simplifyTemplatesGetTemplateDeclarations(Token *tokens, bool &codeWithTemplates);
/**
* Get template instantiations
* @return list of template instantiations
*/
static std::list<Token *> simplifyTemplatesGetTemplateInstantiations(Token *tokens);
/**
* simplify template instantiations (use default argument values)
* @param templates list of template declarations
* @param templateInstantiations list of template instantiations
*/
static void simplifyTemplatesUseDefaultArgumentValues(const std::list<Token *> &templates,
const std::list<Token *> &templateInstantiations);
/**
* Match template declaration/instantiation
* @param instance template instantiation
* @param name name of template
* @param numberOfArguments number of template arguments
* @param patternAfter pattern that must match the tokens after the ">"
* @return match => true
*/
static bool simplifyTemplatesInstantiateMatch(const Token *instance, const std::string &name, std::size_t numberOfArguments, const char patternAfter[]);
/**
* Match template declaration/instantiation
* @param tok The ">" token e.g. before "class"
* @return -1 to bail out or positive integer to identity the position
* of the template name.
*/
static int simplifyTemplatesGetTemplateNamePosition(const Token *tok);
static void simplifyTemplatesExpandTemplate(
TokenList& tokenlist,
const Token *tok,
const std::string &name,
std::vector<const Token *> &typeParametersInDeclaration,
const std::string &newName,
std::vector<const Token *> &typesUsedInTemplateInstantion,
std::list<Token *> &templateInstantiations);
/**
* Simplify templates : expand all instantiatiations for a template
* @todo It seems that inner templates should be instantiated recursively
* @param tokenlist token list
* @param errorlogger error logger
* @param _settings settings
* @param tok token where the template declaration begins
* @param templateInstantiations a list of template usages (not necessarily just for this template)
* @param expandedtemplates all templates that has been expanded so far. The full names are stored.
* @return true if the template was instantiated
*/
static bool simplifyTemplateInstantions(
TokenList& tokenlist,
ErrorLogger& errorlogger,
const Settings *_settings,
const Token *tok,
std::list<Token *> &templateInstantiations,
std::set<std::string> &expandedtemplates);
/**
* Simplify templates
* @param tokenlist token list
* @param errorlogger error logger
* @param _settings settings
* @param _codeWithTemplates output parameter that is set if code contains templates
*/
static void simplifyTemplates(
TokenList& tokenlist,
ErrorLogger& errorlogger,
const Settings *_settings,
bool &_codeWithTemplates);
/**
* Simplify constant calculations such as "1+2" => "3"
* @param tok start token
* @return true if modifications to token-list are done.
* false if no modifications are done.
*/
static bool simplifyNumericCalculations(Token *tok);
/**
* Simplify constant calculations such as "1+2" => "3".
* This also perform simple cleanup of parantheses etc.
* @param _tokens start token
* @return true if modifications to token-list are done.
* false if no modifications are done.
*/
static bool simplifyCalculations(Token *_tokens);
private:
/**
* Remove a specific "template < ..." template class/function
*/
static bool removeTemplate(Token *tok);
};
/// @}
//---------------------------------------------------------------------------
#endif
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