312 lines
8.2 KiB
C++
312 lines
8.2 KiB
C++
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/*
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* This file is part of the Colobot: Gold Edition source code
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* Copyright (C) 2001-2015, Daniel Roux, EPSITEC SA & TerranovaTeam
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* http://epsitec.ch; http://colobot.info; http://github.com/colobot
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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.
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* See the 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://gnu.org/licenses
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*/
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// Modules inlcude
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#include "CBotCall.h"
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#include "CBotToken.h"
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#include "CBotStack.h"
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#include "CBotUtils.h"
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// Local include
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// Global include
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////////////////////////////////////////////////////////////////////////////////
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CBotCall* CBotCall::m_ListCalls = nullptr;
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void* CBotCall::m_pUser = nullptr;
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////////////////////////////////////////////////////////////////////////////////
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CBotCall::CBotCall(const char* name,
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bool rExec (CBotVar* pVar, CBotVar* pResult, int& Exception, void* pUser),
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CBotTypResult rCompile (CBotVar* &pVar, void* pUser))
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{
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m_name = name;
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m_rExec = rExec;
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m_rComp = rCompile;
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m_next = nullptr;
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m_nFuncIdent = CBotVar::NextUniqNum();
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}
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////////////////////////////////////////////////////////////////////////////////
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CBotCall::~CBotCall()
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{
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if (m_next) delete m_next;
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m_next = nullptr;
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}
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////////////////////////////////////////////////////////////////////////////////
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void CBotCall::Free()
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{
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delete CBotCall::m_ListCalls;
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}
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////////////////////////////////////////////////////////////////////////////////
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bool CBotCall::AddFunction(const char* name,
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bool rExec (CBotVar* pVar, CBotVar* pResult, int& Exception, void* pUser),
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CBotTypResult rCompile (CBotVar* &pVar, void* pUser))
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{
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CBotCall* p = m_ListCalls;
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CBotCall* pp = nullptr;
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if ( p != nullptr ) while ( p->m_next != nullptr )
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{
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if ( p->GetName() == name )
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{
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// frees redefined function
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if ( pp ) pp->m_next = p->m_next;
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else m_ListCalls = p->m_next;
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pp = p;
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p = p->m_next;
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pp->m_next = nullptr; // not to destroy the following list
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delete pp;
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continue;
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}
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pp = p; // previous pointer
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p = p->m_next;
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}
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pp = new CBotCall(name, rExec, rCompile);
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if (p) p->m_next = pp;
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else m_ListCalls = pp;
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return true;
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}
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////////////////////////////////////////////////////////////////////////////////
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CBotTypResult CBotCall::CompileCall(CBotToken* &p, CBotVar** ppVar, CBotCStack* pStack, long& nIdent)
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{
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nIdent = 0;
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CBotCall* pt = m_ListCalls;
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CBotString name = p->GetString();
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while ( pt != nullptr )
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{
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if ( pt->m_name == name )
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{
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CBotVar* pVar = MakeListVars(ppVar);
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CBotVar* pVar2 = pVar;
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CBotTypResult r = pt->m_rComp(pVar2, m_pUser);
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int ret = r.GetType();
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// if a class is returned, it is actually a pointer
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if ( ret == CBotTypClass ) r.SetType( ret = CBotTypPointer );
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if ( ret > 20 )
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{
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if (pVar2) pStack->SetError(ret, p /*pVar2->GetToken()*/ );
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}
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delete pVar;
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nIdent = pt->m_nFuncIdent;
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return r;
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}
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pt = pt->m_next;
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}
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return -1;
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}
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////////////////////////////////////////////////////////////////////////////////
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void CBotCall::SetPUser(void* pUser)
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{
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m_pUser = pUser;
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}
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////////////////////////////////////////////////////////////////////////////////
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bool CBotCall::CheckCall(const char* name)
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{
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CBotCall* p = m_ListCalls;
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while ( p != nullptr )
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{
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if ( name == p->GetName() ) return true;
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p = p->m_next;
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}
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return false;
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}
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////////////////////////////////////////////////////////////////////////////////
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CBotString CBotCall::GetName()
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{
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return m_name;
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}
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////////////////////////////////////////////////////////////////////////////////
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CBotCall* CBotCall::Next()
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{
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return m_next;
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}
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////////////////////////////////////////////////////////////////////////////////
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int CBotCall::DoCall(long& nIdent, CBotToken* token, CBotVar** ppVar, CBotStack* pStack, CBotTypResult& rettype)
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{
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CBotCall* pt = m_ListCalls;
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if ( nIdent ) while ( pt != nullptr )
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{
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if ( pt->m_nFuncIdent == nIdent )
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{
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goto fund;
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}
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pt = pt->m_next;
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}
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pt = m_ListCalls;
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if ( token != nullptr )
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{
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CBotString name = token->GetString();
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while ( pt != nullptr )
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{
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if ( pt->m_name == name )
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{
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nIdent = pt->m_nFuncIdent;
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goto fund;
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}
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pt = pt->m_next;
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}
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}
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return -1;
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fund:
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#if !STACKRUN
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// lists the parameters depending on the contents of the stack (pStackVar)
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CBotVar* pVar = MakeListVars(ppVar, true);
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CBotVar* pVarToDelete = pVar;
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// creates a variable to the result
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CBotVar* pResult = rettype.Eq(0) ? nullptr : CBotVar::Create("", rettype);
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CBotVar* pRes = pResult;
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int Exception = 0;
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int res = pt->m_rExec(pVar, pResult, Exception, pStack->GetPUser());
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if ( pResult != pRes ) delete pRes; // different result if made
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delete pVarToDelete;
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if (res == false)
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{
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if (Exception!=0)
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{
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pStack->SetError(Exception, token);
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}
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delete pResult;
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return false;
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}
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pStack->SetVar(pResult);
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if ( rettype.GetType() > 0 && pResult == nullptr )
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{
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pStack->SetError(TX_NORETVAL, token);
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}
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nIdent = pt->m_nFuncIdent;
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return true;
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#else
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CBotStack* pile = pStack->AddStackEOX(pt);
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if ( pile == EOX ) return true;
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// lists the parameters depending on the contents of the stack (pStackVar)
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CBotVar* pVar = MakeListVars(ppVar, true);
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// CBotVar* pVarToDelete = pVar;
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// creates a variable to the result
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CBotVar* pResult = rettype.Eq(0) ? nullptr : CBotVar::Create("", rettype);
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pile->SetVar( pVar );
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CBotStack* pile2 = pile->AddStack();
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pile2->SetVar( pResult );
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pile->SetError(0, token); // for the position on error + away
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return pt->Run( pStack );
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#endif
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}
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#if STACKRUN
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////////////////////////////////////////////////////////////////////////////////
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bool CBotCall::RestoreCall(long& nIdent, CBotToken* token, CBotVar** ppVar, CBotStack* pStack)
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{
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CBotCall* pt = m_ListCalls;
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{
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CBotString name = token->GetString();
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while ( pt != nullptr )
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{
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if ( pt->m_name == name )
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{
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nIdent = pt->m_nFuncIdent;
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CBotStack* pile = pStack->RestoreStackEOX(pt);
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if ( pile == nullptr ) return true;
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// CBotStack* pile2 = pile->RestoreStack();
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pile->RestoreStack();
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return true;
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}
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pt = pt->m_next;
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}
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}
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return false;
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}
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////////////////////////////////////////////////////////////////////////////////
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bool CBotCall::Run(CBotStack* pStack)
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{
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CBotStack* pile = pStack->AddStackEOX(this);
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if ( pile == EOX ) return true;
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CBotVar* pVar = pile->GetVar();
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CBotStack* pile2 = pile->AddStack();
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CBotVar* pResult = pile2->GetVar();
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CBotVar* pRes = pResult;
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int Exception = 0;
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int res = m_rExec(pVar, pResult, Exception, pStack->GetPUser());
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if (res == false)
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{
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if (Exception!=0)
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{
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pStack->SetError(Exception);
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}
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if ( pResult != pRes ) delete pResult; // different result if made
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return false;
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}
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if ( pResult != nullptr ) pStack->SetCopyVar( pResult );
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if ( pResult != pRes ) delete pResult; // different result if made
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return true;
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}
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#endif
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