102 lines
3.4 KiB
C++
102 lines
3.4 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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#ifndef valueflowH
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#define valueflowH
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//---------------------------------------------------------------------------
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#include <string>
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class Token;
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class TokenList;
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class SymbolDatabase;
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class ErrorLogger;
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class Settings;
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namespace ValueFlow {
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class Value {
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public:
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explicit Value(long long val = 0) : intvalue(val), tokvalue(nullptr), varvalue(val), condition(0), varId(0U), conditional(false), inconclusive(false), defaultArg(false), valueKind(ValueKind::Possible) {}
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Value(const Token *c, long long val) : intvalue(val), tokvalue(nullptr), varvalue(val), condition(c), varId(0U), conditional(false), inconclusive(false), defaultArg(false), valueKind(ValueKind::Possible) {}
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/** int value */
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long long intvalue;
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/** token value - the token that has the value. this is used for pointer aliases, strings, etc. */
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const Token *tokvalue;
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/** For calculated values - variable value that calculated value depends on */
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long long varvalue;
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/** Condition that this value depends on (TODO: replace with a 'callstack') */
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const Token *condition;
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/** For calculated values - varId that calculated value depends on */
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unsigned int varId;
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/** Conditional value */
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bool conditional;
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/** Is this value inconclusive? */
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bool inconclusive;
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/** Is this value passed as default parameter to the function? */
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bool defaultArg;
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/** How known is this value */
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enum ValueKind {
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/** This value is possible, other unlisted values may also be possible */
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Possible,
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/** Only listed values are possible */
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Known,
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/** Max value. Greater values are impossible. */
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Max,
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/** Min value. Smaller values are impossible. */
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Min
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} valueKind;
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void setKnown() {
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valueKind = ValueKind::Known;
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}
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bool isKnown() const {
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return valueKind == ValueKind::Known;
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}
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void setPossible() {
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valueKind = ValueKind::Possible;
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}
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bool isPossible() const {
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return valueKind == ValueKind::Possible;
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}
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void changeKnownToPossible() {
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if (isKnown())
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valueKind = ValueKind::Possible;
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}
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};
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void setValues(TokenList *tokenlist, SymbolDatabase* symboldatabase, ErrorLogger *errorLogger, const Settings *settings);
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std::string eitherTheConditionIsRedundant(const Token *condition);
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}
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#endif // valueflowH
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