103 lines
3.0 KiB
C++
103 lines
3.0 KiB
C++
/*
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* Cppcheck - A tool for static C/C++ code analysis
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* Copyright (C) 2007-2015 Daniel Marjamäki 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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*/
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//---------------------------------------------------------------------------
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#include "astutils.h"
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bool astIsIntegral(const Token *tok, bool unknown)
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{
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// TODO: handle arrays
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if (tok->isNumber())
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return MathLib::isInt(tok->str());
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if (tok->isName()) {
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if (tok->variable())
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return tok->variable()->isIntegralType();
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return unknown;
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}
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if (tok->str() == "(") {
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// cast
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if (Token::Match(tok, "( const| float|double )"))
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return false;
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// Function call
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if (tok->previous()->function()) {
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if (Token::Match(tok->previous()->function()->retDef, "float|double"))
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return false;
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else if (Token::Match(tok->previous()->function()->retDef, "bool|char|short|int|long"))
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return true;
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}
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if (tok->strAt(-1) == "sizeof")
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return true;
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return unknown;
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}
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if (tok->astOperand2() && (tok->str() == "." || tok->str() == "::"))
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return astIsIntegral(tok->astOperand2(), unknown);
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if (tok->astOperand1() && tok->str() != "?")
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return astIsIntegral(tok->astOperand1(), unknown);
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return unknown;
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}
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bool astIsFloat(const Token *tok, bool unknown)
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{
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// TODO: handle arrays
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if (tok->isNumber())
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return MathLib::isFloat(tok->str());
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if (tok->isName()) {
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if (tok->variable())
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return tok->variable()->isFloatingType();
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return unknown;
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}
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if (tok->str() == "(") {
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// cast
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if (Token::Match(tok, "( const| float|double )"))
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return true;
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// Function call
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if (tok->previous()->function())
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return Token::Match(tok->previous()->function()->retDef, "float|double");
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if (tok->strAt(-1) == "sizeof")
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return false;
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return unknown;
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}
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if (tok->astOperand2() && (tok->str() == "." || tok->str() == "::"))
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return astIsFloat(tok->astOperand2(), unknown);
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if (tok->astOperand1() && tok->str() != "?" && astIsFloat(tok->astOperand1(), unknown))
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return true;
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if (tok->astOperand2() && astIsFloat(tok->astOperand2(), unknown))
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return true;
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if (tok->isOp())
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return false;
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return unknown;
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}
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