134 lines
4.1 KiB
C++
134 lines
4.1 KiB
C++
/*
|
|
* This file is part of the Colobot: Gold Edition source code
|
|
* Copyright (C) 2001-2018, 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
|
|
*/
|
|
|
|
#include "CBot/CBotInstr/CBotExprUnaire.h"
|
|
#include "CBot/CBotInstr/CBotParExpr.h"
|
|
|
|
#include "CBot/CBotStack.h"
|
|
#include "CBot/CBotCStack.h"
|
|
|
|
#include "CBot/CBotVar/CBotVar.h"
|
|
|
|
namespace CBot
|
|
{
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
CBotExprUnaire::CBotExprUnaire()
|
|
{
|
|
m_expr = nullptr;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
CBotExprUnaire::~CBotExprUnaire()
|
|
{
|
|
delete m_expr;
|
|
}
|
|
|
|
CBotInstr* CBotExprUnaire::Compile(CBotToken* &p, CBotCStack* pStack, bool bLiteral, bool bConstExpr)
|
|
{
|
|
int op = p->GetType();
|
|
CBotToken* pp = p;
|
|
if (!IsOfTypeList( p, ID_ADD, ID_SUB, ID_LOG_NOT, ID_TXT_NOT, ID_NOT, 0 )) return nullptr;
|
|
|
|
CBotCStack* pStk = pStack->TokenStack(pp);
|
|
|
|
CBotExprUnaire* inst = new CBotExprUnaire();
|
|
inst->SetToken(pp);
|
|
|
|
if (bConstExpr || !bLiteral)
|
|
inst->m_expr = CBotParExpr::Compile(p, pStk, bConstExpr);
|
|
else
|
|
inst->m_expr = CBotParExpr::CompileLitExpr(p, pStk);
|
|
|
|
if (inst->m_expr != nullptr)
|
|
{
|
|
if (op == ID_ADD && pStk->GetType() < CBotTypBoolean) // only with the number
|
|
return pStack->Return(inst, pStk);
|
|
if (op == ID_SUB && pStk->GetType() < CBotTypBoolean) // only with the numer
|
|
return pStack->Return(inst, pStk);
|
|
if (op == ID_NOT && pStk->GetType() < CBotTypFloat) // only with an integer
|
|
return pStack->Return(inst, pStk);
|
|
if (op == ID_LOG_NOT && pStk->GetTypResult().Eq(CBotTypBoolean))// only with boolean
|
|
return pStack->Return(inst, pStk);
|
|
if (op == ID_TXT_NOT && pStk->GetTypResult().Eq(CBotTypBoolean))// only with boolean
|
|
return pStack->Return(inst, pStk);
|
|
|
|
pStk->SetError(CBotErrBadType1, &inst->m_token);
|
|
}
|
|
delete inst;
|
|
return pStack->Return(nullptr, pStk);
|
|
}
|
|
|
|
// executes unary expression
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
bool CBotExprUnaire::Execute(CBotStack* &pj)
|
|
{
|
|
CBotStack* pile = pj->AddStack(this);
|
|
|
|
if (pile->GetState() == 0)
|
|
{
|
|
if (!m_expr->Execute(pile)) return false; // interrupted ?
|
|
pile->IncState();
|
|
}
|
|
|
|
CBotStack* pile2 = pile->AddStack();
|
|
if (pile2->IfStep()) return false;
|
|
|
|
CBotVar* var = pile->GetVar(); // get the result on the stack
|
|
|
|
switch (GetTokenType())
|
|
{
|
|
case ID_ADD:
|
|
break;
|
|
case ID_SUB:
|
|
var->Neg(); // change the sign
|
|
break;
|
|
case ID_NOT:
|
|
case ID_LOG_NOT:
|
|
case ID_TXT_NOT:
|
|
var->Not();
|
|
break;
|
|
}
|
|
return pj->Return(pile); // forwards below
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
void CBotExprUnaire::RestoreState(CBotStack* &pj, bool bMain)
|
|
{
|
|
if (!bMain) return;
|
|
|
|
CBotStack* pile = pj->RestoreStack(this);
|
|
if ( pile == nullptr) return;
|
|
|
|
if (pile->GetState() == 0)
|
|
{
|
|
m_expr->RestoreState(pile, bMain); // interrupted here!
|
|
return;
|
|
}
|
|
}
|
|
|
|
std::map<std::string, CBotInstr*> CBotExprUnaire::GetDebugLinks()
|
|
{
|
|
auto links = CBotInstr::GetDebugLinks();
|
|
links["m_expr"] = m_expr;
|
|
return links;
|
|
}
|
|
|
|
} // namespace CBot
|