amxmodx/compiler/scasm/amx_macro.cpp

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2004-08-06 12:46:59 +04:00
/* 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"
MacroList::~MacroList()
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{
Clear();
}
void MacroList::Clear()
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{
std::vector<MacroList::Macro *>::iterator i;
for (i=List.begin(); i!=List.end(); i++)
{
if ( (*i) )
delete (*i);
}
List.clear();
}
MacroList::Macro::~Macro()
{
std::vector<std::string *>::iterator i;
for (i=argList.begin(); i!=argList.end(); i++)
{
if ( (*i) )
delete (*i);
}
argList.clear();
}
MacroList::MacroList()
{
printf("Not instantiated with a compiler\n");
exit(0);
}
MacroList::MacroList(void *c)
{
CError = ((Compiler *)c)->ErrorHandler();
Cmp = c;
}
std::string *MacroList::BeginReplacement(MacroList::Macro *macro)
{
std::string *mstring = new std::string(macro->macro);
macro->arg = macro->argList.begin();
macro->argpos = 0;
return mstring;
}
int MacroList::ReplaceArgument(MacroList::Macro *m, std::string *macro, std::string &arg, int pos = 0)
{
int i = 0, bPos = 0;
bPos = FindSymbol(*macro, *(*m->arg), pos);
if (bPos != -1)
{
macro->replace(bPos, (*m->arg)->size(), arg);
bPos += (int)arg.size();
}
m->arg++;
m->argpos++;
return bPos;
}
void MacroList::EndReplacement(MacroList::Macro *m, std::string *macro)
{
if (m->arg != m->argList.end())
{
CError->ErrorMsg(Err_MacroParamCount, m->symbol.c_str());
}
m->arg = m->argList.begin();
m->argpos = 0;
}
MacroList::Macro *MacroList::AddMacroBegin(std::string &symbol, std::string &mac)
{
Macro *macro = new Macro;
macro->macro.assign(mac);
macro->symbol.assign(symbol);
return macro;
}
void MacroList::AddMacroArgument(MacroList::Macro *m, std::string &arg)
{
std::string *sArg = new std::string(arg);
m->argList.push_back(sArg);
}
void MacroList::AddMacroEnd(MacroList::Macro *m)
{
List.push_back(m);
}
MacroList::Macro *MacroList::FindMacro(std::string &sym)
{
std::vector<Macro *>::iterator i;
for (i=List.begin(); i!=List.end(); i++)
{
if ((*i)->macro.compare(sym) == 0)
return (*i);
}
return NULL;
}
void MacroList::SearchAndReplace(std::string &text)
{
std::vector<Macro *>::iterator i;
MacroList::Macro *m = NULL;
int pos=0, symPos=0, bPos=0, argPos=0;
for (i=List.begin(); i!=List.end(); i++)
{
m = (*i);
pos = FindSymbol(text, m->symbol, 0);
if (pos != -1)
{
/* Strip the arguments */
std::string argstring;
symPos = pos + (int)m->symbol.size();
argstring.assign(text.substr(symPos+1, text.size()-symPos));
std::vector<std::string *> argList;
((Compiler *)Cmp)->FindArguments(argstring, argList, bPos);
/* Build the macro */
std::string *ms;
ms = BeginReplacement(m);
std::vector<std::string *>::iterator j;
for (j=argList.begin(); j!=argList.end(); j++)
{
argPos = ReplaceArgument(m, ms, *(*j), argPos);
}
EndReplacement(m, ms);
/* Search and replace */
text.replace(pos, bPos-pos, *ms);
/* Cleanup */
delete ms;
i = List.begin();
}
}
}