amxmodx/compiler/scasm/amx_label.cpp

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/* AMX Assembler
* Copyright (C)2004 David "BAILOPAN" Anderson
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
* 3. This notice may not be removed or altered from any source distribution.
*
* Version: $Id$
*/
#include "amxasm.h"
LabelMngr::~LabelMngr()
{
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Clear();
}
LabelMngr::Label::Label()
{
cip = -1;
sym = 0;
}
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void LabelMngr::Clear()
{
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std::vector<LabelMngr::Label *>::iterator i;
for (i=List.begin(); i!=List.end(); i++)
{
if ( (*i) )
delete (*i);
}
List.clear();
}
void LabelMngr::AddLabel(SymbolList::Symbol *sym, int cip)
{
LabelMngr::Label *p = new LabelMngr::Label;
p->sym = sym;
p->cip = cip;
List.push_back(p);
}
LabelMngr::Label *LabelMngr::FindLabel(std::string &sym)
{
std::vector<LabelMngr::Label *>::iterator i;
for (i=List.begin(); i!=List.end(); i++)
{
if ( (*i)->sym->IsEqual(sym) )
{
return (*i);
}
}
return NULL;
}
bool LabelMngr::SetCip(std::string &sym, int cip)
{
LabelMngr::Label *p = NULL;
p = FindLabel(sym);
if (p == NULL)
return false;
p->cip = cip;
return true;
}
void LabelMngr::QueueLabel(std::string &sym, Asm *ASM)
{
std::string d(sym);
LQ[d].push(ASM);
}
void LabelMngr::CompleteQueue()
{
std::map<std::string,std::stack<Asm *> >::iterator i;
std::stack<Asm *> *stk = 0;
std::string search;
Asm *ASM = 0;
LabelMngr::Label *p = 0;
for (i=LQ.begin(); i!=LQ.end(); i++)
{
search.assign( (*i).first );
p = FindLabel(search);
stk = &((*i).second);
if (p == NULL || p->cip == LabelMngr::ncip)
{
CError->ErrorMsg(Err_Bad_Label);
}
while (!stk->empty())
{
ASM = stk->top();
ASM->params[0] = p->cip;
stk->pop();
}
}
LQ.clear();
}
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int LabelMngr::GetCip(std::string &sym)
{
LabelMngr::Label *p = NULL;
p = FindLabel(sym);
if (p == NULL)
return ncip;
return p->cip;
}