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/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2025 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/>.
*/
#include "vfvalue.h"
#include "errortypes.h"
#include "mathlib.h"
#include "token.h"
#include <sstream>
#include <string>
namespace ValueFlow {
Value::Value(const Token *c, MathLib::bigint val, Bound b)
: bound(b),
safe(false),
conditional(false),
macro(false),
defaultArg(false),
intvalue(val),
varvalue(val),
condition(c) {
errorPath.emplace_back(c, "Assuming that condition '" + c->expressionString() + "' is not redundant");
}
void Value::assumeCondition(const Token *tok) {
condition = tok;
errorPath.emplace_back(tok, "Assuming that condition '" + tok->expressionString() + "' is not redundant");
}
std::string Value::toString() const {
std::stringstream ss;
if (this->isImpossible())
ss << "!";
if (this->bound == Bound::Lower)
ss << ">=";
if (this->bound == Bound::Upper)
ss << "<=";
switch (this->valueType) {
case ValueType::INT:
ss << this->intvalue;
break;
case ValueType::TOK:
ss << this->tokvalue->str();
break;
case ValueType::FLOAT:
ss << MathLib::toString(this->floatValue);
break;
case ValueType::MOVED:
ss << toString(this->moveKind);
break;
case ValueType::UNINIT:
ss << "Uninit";
break;
case ValueType::BUFFER_SIZE:
case ValueType::CONTAINER_SIZE:
ss << "size=" << this->intvalue;
break;
case ValueType::ITERATOR_START:
ss << "start=" << this->intvalue;
break;
case ValueType::ITERATOR_END:
ss << "end=" << this->intvalue;
break;
case ValueType::LIFETIME:
ss << "lifetime[" << toString(this->lifetimeKind) << "]=("
<< this->tokvalue->expressionString() << ")";
break;
case ValueType::SYMBOLIC:
ss << "symbolic=(" << this->tokvalue->expressionString();
if (this->intvalue > 0)
ss << "+" << this->intvalue;
else if (this->intvalue < 0)
ss << "-" << -this->intvalue;
ss << ")";
break;
}
if (this->indirect > 0)
for (int i = 0; i < this->indirect; i++)
ss << "*";
if (this->path > 0)
ss << "@" << this->path;
return ss.str();
}
std::string Value::infoString() const {
switch (valueType) {
case ValueType::INT:
return MathLib::toString(intvalue);
case ValueType::TOK:
return tokvalue->str();
case ValueType::FLOAT:
return MathLib::toString(floatValue);
case ValueType::MOVED:
return "<Moved>";
case ValueType::UNINIT:
return "<Uninit>";
case ValueType::BUFFER_SIZE:
case ValueType::CONTAINER_SIZE:
return "size=" + MathLib::toString(intvalue);
case ValueType::ITERATOR_START:
return "start=" + MathLib::toString(intvalue);
case ValueType::ITERATOR_END:
return "end=" + MathLib::toString(intvalue);
case ValueType::LIFETIME:
return "lifetime=" + tokvalue->str();
case ValueType::SYMBOLIC:
{
std::string result = "symbolic=" + tokvalue->expressionString();
if (intvalue > 0)
result += "+" + MathLib::toString(intvalue);
else if (intvalue < 0)
result += "-" + MathLib::toString(-intvalue);
return result;
}
}
throw InternalError(nullptr, "Invalid ValueFlow Value type");
}
const char *Value::toString(MoveKind moveKind) {
switch (moveKind) {
case MoveKind::NonMovedVariable:
return "NonMovedVariable";
case MoveKind::MovedVariable:
return "MovedVariable";
case MoveKind::ForwardedVariable:
return "ForwardedVariable";
}
return "";
}
const char *Value::toString(LifetimeKind lifetimeKind) {
switch (lifetimeKind) {
case LifetimeKind::Object:
return "Object";
case LifetimeKind::SubObject:
return "SubObject";
case LifetimeKind::Lambda:
return "Lambda";
case LifetimeKind::Iterator:
return "Iterator";
case LifetimeKind::Address:
return "Address";
}
return "";
}
bool Value::sameToken(const Token *tok1, const Token *tok2) {
if (tok1 == tok2)
return true;
if (!tok1)
return false;
if (tok1->exprId() == 0 || tok2->exprId() == 0)
return false;
return tok1->exprId() == tok2->exprId();
}
const char *Value::toString(LifetimeScope lifetimeScope) {
switch (lifetimeScope) {
case LifetimeScope::Local:
return "Local";
case LifetimeScope::Argument:
return "Argument";
case LifetimeScope::SubFunction:
return "SubFunction";
case LifetimeScope::ThisPointer:
return "ThisPointer";
case LifetimeScope::ThisValue:
return "ThisValue";
}
return "";
}
const char *Value::toString(Bound bound) {
switch (bound) {
case Bound::Point:
return "Point";
case Bound::Upper:
return "Upper";
case Bound::Lower:
return "Lower";
}
return "";
}
}
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