colobot/src/CBot/CBotInstr/CBotLeftExprVar.cpp

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/*
* This file is part of the Colobot: Gold Edition source code
* Copyright (C) 2001-2015, Daniel Roux, EPSITEC SA & TerranovaTeam
* http://epsitec.ch; http://colobot.info; http://github.com/colobot
*
* 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://gnu.org/licenses
*/
// Modules inlcude
#include "CBotLeftExprVar.h"
#include "CBotStack.h"
// Local include
// Global include
#include <assert.h>
////////////////////////////////////////////////////////////////////////////////
CBotLeftExprVar::CBotLeftExprVar()
{
name = "CBotLeftExprVar";
m_typevar = -1;
m_nIdent = 0;
}
////////////////////////////////////////////////////////////////////////////////
CBotLeftExprVar::~CBotLeftExprVar()
{
}
////////////////////////////////////////////////////////////////////////////////
CBotInstr* CBotLeftExprVar::Compile(CBotToken* &p, CBotCStack* pStack)
{
// verifies that the token is a variable name
if (p->GetType() != TokenTypVar)
{
pStack->SetError( TX_NOVAR, p->GetStart());
return nullptr;
}
CBotLeftExprVar* inst = new CBotLeftExprVar();
inst->SetToken(p);
p = p->GetNext();
return inst;
}
////////////////////////////////////////////////////////////////////////////////
bool CBotLeftExprVar::Execute(CBotStack* &pj)
{
CBotVar* var1;
CBotVar* var2;
var1 = CBotVar::Create(m_token.GetString(), m_typevar);
var1->SetUniqNum(m_nIdent); // with the unique identifier
pj->AddVar(var1); // place it on the stack
var2 = pj->GetVar(); // result on the stack
if (var2) var1->SetVal(var2); // do the assignment
return true;
}
////////////////////////////////////////////////////////////////////////////////
void CBotLeftExprVar::RestoreState(CBotStack* &pj, bool bMain)
{
CBotVar* var1;
var1 = pj->FindVar(m_token.GetString());
if (var1 == nullptr) assert(0);
var1->SetUniqNum(m_nIdent); // with the unique identifier
}