amxmodx/compiler/scasm/cexpr.h

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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: $Id$
*/
#ifndef _INCLUDE_CEXPR_H
#define _INCLUDE_CEXPR_H
/* This class is used for a single expression element
* It reads in a symbol and evaluates it.
*/
typedef enum
{
Val_None,
Val_Error,
Val_String,
Val_String_Hex,
Val_String_Number,
Val_Number_Hex,
Val_Number,
Val_Block,
Val_Hex,
} cExprType;
class CExpr
{
public:
CExpr();
CExpr(ErrorMngr *e);
CExpr(ErrorMngr *e, std::string &text);
void Set(std::string &text);
const char *GetString(int *d=NULL);
int Analyze();
cExprType Evaluate();
cExprType GetType();
int GetNumber();
int Size();
void Clear();
~CExpr();
private:
char IsHex(char c);
char IsLiteral(char c);
int DeHex(std::string blk);
private:
char *block;
std::string data;
cExprType type;
int numVal;
private:
ErrorMngr *CError;
};
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#endif //_INCLUDE_CEXPR_H