mirror of https://github.com/cc65/cc65.git
122 lines
4.7 KiB
C
122 lines
4.7 KiB
C
/*****************************************************************************/
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/* */
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/* codelab.h */
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/* */
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/* Code label structure */
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/* */
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/* */
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/* */
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/* (C) 2001-2009, Ullrich von Bassewitz */
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/* Roemerstrasse 52 */
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/* D-70794 Filderstadt */
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/* EMail: uz@cc65.org */
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/* */
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/* */
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/* This software is provided 'as-is', without any expressed or implied */
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/* warranty. In no event will the authors be held liable for any damages */
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/* arising from the use of this software. */
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/* */
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/* Permission is granted to anyone to use this software for any purpose, */
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/* including commercial applications, and to alter it and redistribute it */
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/* freely, subject to the following restrictions: */
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/* */
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/* 1. The origin of this software must not be misrepresented; you must not */
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/* claim that you wrote the original software. If you use this software */
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/* in a product, an acknowledgment in the product documentation would be */
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/* appreciated but is not required. */
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/* 2. Altered source versions must be plainly marked as such, and must not */
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/* be misrepresented as being the original software. */
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/* 3. This notice may not be removed or altered from any source */
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/* distribution. */
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/* */
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/*****************************************************************************/
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#ifndef CODELAB_H
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#define CODELAB_H
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/* common */
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#include "coll.h"
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/*****************************************************************************/
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/* Forwards */
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/*****************************************************************************/
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struct CodeEntry;
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/*****************************************************************************/
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/* struct CodeLabel */
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/*****************************************************************************/
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/* Label structure */
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typedef struct CodeLabel CodeLabel;
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struct CodeLabel {
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CodeLabel* Next; /* Next in hash list */
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char* Name; /* Label name */
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unsigned Hash; /* Hash over the name */
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struct CodeEntry* Owner; /* Owner entry */
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Collection JumpFrom; /* Entries that jump here */
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};
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/*****************************************************************************/
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/* Code */
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/*****************************************************************************/
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CodeLabel* NewCodeLabel (const char* Name, unsigned Hash);
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/* Create a new code label, initialize and return it */
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void FreeCodeLabel (CodeLabel* L);
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/* Free the given code label */
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#if defined(HAVE_INLINE)
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INLINE unsigned CL_GetRefCount (const CodeLabel* L)
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/* Get the number of references for this label */
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{
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return CollCount (&L->JumpFrom);
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}
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#else
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# define CL_GetRefCount(L) CollCount (&(L)->JumpFrom)
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#endif
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#if defined(HAVE_INLINE)
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INLINE struct CodeEntry* CL_GetRef (CodeLabel* L, unsigned Index)
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/* Get a code entry referencing this label */
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{
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return CollAt (&L->JumpFrom, Index);
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}
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#else
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# define CL_GetRef(L, Index) CollAt (&(L)->JumpFrom, (Index))
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#endif
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void CL_AddRef (CodeLabel* L, struct CodeEntry* E);
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/* Let the CodeEntry E reference the label L */
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void CL_MoveRefs (CodeLabel* OldLabel, CodeLabel* NewLabel);
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/* Move all references to OldLabel to point to NewLabel. OldLabel will have no
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** more references on return.
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*/
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void CL_Output (const CodeLabel* L);
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/* Output the code label to the output file */
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/* End of codelab.h */
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#endif
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