1 /*****************************************************************************/
5 /* Code label structure */
9 /* (C) 2001 Ullrich von Bassewitz */
11 /* D-70597 Stuttgart */
12 /* EMail: uz@musoftware.de */
15 /* This software is provided 'as-is', without any expressed or implied */
16 /* warranty. In no event will the authors be held liable for any damages */
17 /* arising from the use of this software. */
19 /* Permission is granted to anyone to use this software for any purpose, */
20 /* including commercial applications, and to alter it and redistribute it */
21 /* freely, subject to the following restrictions: */
23 /* 1. The origin of this software must not be misrepresented; you must not */
24 /* claim that you wrote the original software. If you use this software */
25 /* in a product, an acknowledgment in the product documentation would be */
26 /* appreciated but is not required. */
27 /* 2. Altered source versions must be plainly marked as such, and must not */
28 /* be misrepresented as being the original software. */
29 /* 3. This notice may not be removed or altered from any source */
32 /*****************************************************************************/
48 /*****************************************************************************/
50 /*****************************************************************************/
58 /*****************************************************************************/
59 /* struct CodeLabel */
60 /*****************************************************************************/
65 typedef struct CodeLabel CodeLabel;
67 CodeLabel* Next; /* Next in hash list */
68 char* Name; /* Label name */
69 unsigned Hash; /* Hash over the name */
70 struct CodeEntry* Owner; /* Owner entry */
71 Collection JumpFrom; /* Entries that jump here */
76 /*****************************************************************************/
78 /*****************************************************************************/
82 CodeLabel* NewCodeLabel (const char* Name, unsigned Hash);
83 /* Create a new code label, initialize and return it */
85 void FreeCodeLabel (CodeLabel* L);
86 /* Free the given code label */
88 #if defined(HAVE_INLINE)
89 INLINE unsigned CL_GetRefCount (const CodeLabel* L)
90 /* Get the number of references for this label */
92 return CollCount (&L->JumpFrom);
95 # define CL_GetRefCount(L) CollCount (&(L)->JumpFrom)
98 #if defined(HAVE_INLINE)
99 INLINE struct CodeEntry* CL_GetRef (CodeLabel* L, unsigned Index)
100 /* Get a code entry referencing this label */
102 return CollAt (&L->JumpFrom, Index);
105 # define CL_GetRef(L, Index) CollAt (&(L)->JumpFrom, (Index))
108 void CL_AddRef (CodeLabel* L, struct CodeEntry* E);
109 /* Let the CodeEntry E reference the label L */
111 void CL_MoveRefs (CodeLabel* OldLabel, CodeLabel* NewLabel);
112 /* Move all references to OldLabel to point to NewLabel. OldLabel will have no
113 * more references on return.
116 void CL_Output (const CodeLabel* L, FILE* F);
117 /* Output the code label to a file */
121 /* End of codelab.h */