144 lines
5.4 KiB
C++
144 lines
5.4 KiB
C++
/*
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* Cppcheck - A tool for static C/C++ code analysis
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* Copyright (C) 2007-2018 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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*/
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//---------------------------------------------------------------------------
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#ifndef astutilsH
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#define astutilsH
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//---------------------------------------------------------------------------
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#include <string>
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#include <vector>
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#include "errorlogger.h"
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class Library;
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class Settings;
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class Token;
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class Variable;
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/** Is expression a 'signed char' if no promotion is used */
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bool astIsSignedChar(const Token *tok);
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/** Is expression a 'char' if no promotion is used? */
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bool astIsUnknownSignChar(const Token *tok);
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/** Is expression of integral type? */
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bool astIsIntegral(const Token *tok, bool unknown);
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/** Is expression of floating point type? */
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bool astIsFloat(const Token *tok, bool unknown);
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/** Is expression of boolean type? */
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bool astIsBool(const Token *tok);
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/**
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* Get canonical type of expression. const/static/etc are not included and neither *&.
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* For example:
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* Expression type Return
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* std::string std::string
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* int * int
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* static const int int
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* std::vector<T> std::vector
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*/
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std::string astCanonicalType(const Token *expr);
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/** Is given syntax tree a variable comparison against value */
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const Token * astIsVariableComparison(const Token *tok, const std::string &comp, const std::string &rhs, const Token **vartok=nullptr);
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const Token * nextAfterAstRightmostLeaf(const Token * tok);
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bool precedes(const Token * tok1, const Token * tok2);
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bool isSameExpression(bool cpp, bool macro, const Token *tok1, const Token *tok2, const Library& library, bool pure, bool followVar, ErrorPath* errors=nullptr);
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bool isEqualKnownValue(const Token * const tok1, const Token * const tok2);
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bool isDifferentKnownValues(const Token * const tok1, const Token * const tok2);
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/**
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* Are two conditions opposite
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* @param isNot do you want to know if cond1 is !cond2 or if cond1 and cond2 are non-overlapping. true: cond1==!cond2 false: cond1==true => cond2==false
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* @param cpp c++ file
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* @param cond1 condition1
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* @param cond2 condition2
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* @param library files data
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* @param pure
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*/
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bool isOppositeCond(bool isNot, bool cpp, const Token * const cond1, const Token * const cond2, const Library& library, bool pure, bool followVar, ErrorPath* errors=nullptr);
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bool isOppositeExpression(bool cpp, const Token * const tok1, const Token * const tok2, const Library& library, bool pure, bool followVar, ErrorPath* errors=nullptr);
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bool isConstExpression(const Token *tok, const Library& library, bool pure, bool cpp);
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bool isWithoutSideEffects(bool cpp, const Token* tok);
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bool isUniqueExpression(const Token* tok);
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/** Is scope a return scope (scope will unconditionally return) */
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bool isReturnScope(const Token *endToken);
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/** Is variable changed by function call?
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* In case the answer of the question is inconclusive, e.g. because the function declaration is not known
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* the return value is false and the output parameter inconclusive is set to true
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*
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* @param tok ast tree
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* @param varid Variable Id
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* @param settings program settings
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* @param inconclusive pointer to output variable which indicates that the answer of the question is inconclusive
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*/
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bool isVariableChangedByFunctionCall(const Token *tok, unsigned int varid, const Settings *settings, bool *inconclusive);
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/** Is variable changed by function call?
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* In case the answer of the question is inconclusive, e.g. because the function declaration is not known
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* the return value is false and the output parameter inconclusive is set to true
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*
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* @param tok token of variable in function call
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* @param settings program settings
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* @param inconclusive pointer to output variable which indicates that the answer of the question is inconclusive
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*/
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bool isVariableChangedByFunctionCall(const Token *tok, const Settings *settings, bool *inconclusive);
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/** Is variable changed in block of code? */
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bool isVariableChanged(const Token *start, const Token *end, const unsigned int varid, bool globalvar, const Settings *settings, bool cpp);
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bool isVariableChanged(const Variable * var, const Settings *settings, bool cpp);
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/** Determines the number of arguments - if token is a function call or macro
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* @param start token which is supposed to be the function/macro name.
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* \return Number of arguments
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*/
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int numberOfArguments(const Token *start);
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/**
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* Get arguments (AST)
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*/
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std::vector<const Token *> getArguments(const Token *ftok);
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/**
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* find lambda function end token
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* \param first The [ token
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* \return nullptr or the }
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*/
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const Token *findLambdaEndToken(const Token *first);
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/**
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* do we see a likely write of rhs through overloaded operator
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* s >> x;
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* a & x;
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*/
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bool isLikelyStreamRead(bool cpp, const Token *op);
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#endif // astutilsH
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