amxmodx/compiler/scasm/amx_symbol.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"
bool is_valid_symbol_marker(char c)
{
if (c >= '0' && c <= '9')
return true;
if (isletter(c))
return true;
return false;
}
bool IsValidSymbol(std::string &text)
{
size_t i = 0;
if (!text.size() || !isletter(text[0]))
{
return false;
}
for (i=0; i<text.size(); i++)
{
if (!is_valid_symbol_marker(text[i]))
{
return false;
}
}
return true;
}
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void SymbolList::Clear()
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{
std::list<SymbolList::Symbol *>::iterator i;
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for (i=List.begin(); i!=List.end(); i++)
{
if ( (*i) )
delete (*i);
}
List.clear();
}
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SymbolList::~SymbolList()
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{
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Clear();
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}
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bool SymbolList::Symbol::IsEqual(std::string &s)
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{
return (sym.compare(s)==0);
}
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SymbolList::Symbol* SymbolList::AddSymbol(const char *szSym, SymbolType type, int line)
{
SymbolList::Symbol *S = new SymbolList::Symbol;
S->line = line;
S->type = type;
S->sym.assign(szSym);
List.push_back(S);
return S;
}
SymbolList::Symbol *SymbolList::AddSymbol(std::string &sym, SymbolType type, int line)
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{
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SymbolList::Symbol *S = new SymbolList::Symbol;
S->line = line;
S->type = type;
S->sym.assign(sym);
List.push_back(S);
return S;
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}
SymbolList::Symbol* SymbolList::FindSymbol(std::string &sym)
{
std::list<Symbol*>::iterator i;
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for (i=List.begin(); i!=List.end(); i++)
{
if ((*i)->IsEqual(sym))
return (*i);
}
return NULL;
}
void SymbolList::PrintTable()
{
std::list<Symbol*>::iterator i;
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for (i=List.begin(); i!=List.end(); i++)
{
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printf("Symbol \"%s\" defined on line %d\n", (*i)->sym.c_str(), (*i)->line);
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}
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}
bool SymbolList::EraseSymbol(std::string &sym)
{
std::list<SymbolList::Symbol *>::iterator i;
SymbolList::Symbol *S = 0;
for (i=List.begin(); i!=List.end(); i++)
{
S = (*i);
if ( S && S->IsEqual(sym) )
{
delete S;
i = List.erase(i);
S = 0;
return true;
}
}
return false;
}