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git-svn-id: svn://svn.cc65.org/cc65/trunk@3 b7a2c559-68d2-44c3-8de9-860c34a00d81
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uz
2000-05-28 13:40:48 +00:00
parent 579491e8a4
commit 53dd513176
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src/ld65/expr.h Normal file
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/*****************************************************************************/
/* */
/* expr.h */
/* */
/* Expression evaluation for the ld65 linker */
/* */
/* */
/* */
/* (C) 1998-2000 Ullrich von Bassewitz */
/* Wacholderweg 14 */
/* D-70597 Stuttgart */
/* EMail: uz@musoftware.de */
/* */
/* */
/* This software is provided 'as-is', without any expressed 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. */
/* */
/*****************************************************************************/
#ifndef EXPR_H
#define EXPR_H
#include "../common/exprdefs.h"
#include "objdata.h"
#include "exports.h"
#include "config.h"
/*****************************************************************************/
/* Code */
/*****************************************************************************/
void FreeExpr (ExprNode* Root);
/* Free the expression tree, Root is pointing to. */
int IsConstExpr (ExprNode* Root);
/* Return true if the given expression is a constant expression, that is, one
* with no references to external symbols.
*/
Import* GetExprImport (ExprNode* Expr);
/* Get the import data structure for a symbol expression node */
Export* GetExprExport (ExprNode* Expr);
/* Get the exported symbol for a symbol expression node */
Section* GetExprSection (ExprNode* Expr);
/* Get the segment for a segment expression node */
long GetExprVal (ExprNode* Expr);
/* Get the value of a constant expression */
ExprNode* LiteralExpr (long Val, ObjData* O);
/* Return an expression tree that encodes the given literal value */
ExprNode* MemExpr (Memory* Mem, long Offs, ObjData* O);
/* Return an expression tree that encodes an offset into the memory area */
void DumpExpr (const ExprNode* Expr);
/* Dump an expression tree to stdout */
ExprNode* ReadExpr (FILE* F, ObjData* O);
/* Read an expression from the given file */
int EqualExpr (ExprNode* E1, ExprNode* E2);
/* Check if two expressions are identical. */
/* End of expr.h */
#endif