1 /*****************************************************************************/
5 /* Token list for the ca65 macroassembler */
9 /* (C) 2000-2012, Ullrich von Bassewitz */
10 /* Roemerstrasse 52 */
11 /* D-70794 Filderstadt */
12 /* EMail: uz@cc65.org */
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 /*****************************************************************************/
50 /*****************************************************************************/
52 /*****************************************************************************/
56 /* Struct holding a token */
57 typedef struct TokNode TokNode;
59 TokNode* Next; /* For single linked list */
60 Token T; /* Token value */
63 /* Struct holding a token list */
64 typedef struct TokList TokList;
66 TokList* Next; /* Single linked list (for replay) */
67 TokNode* Root; /* First node in list */
68 TokNode* Last; /* Last node in list or replay */
69 unsigned RepCount; /* Repeat counter (used for replay) */
70 unsigned RepMax; /* Maximum repeat count for replay */
71 unsigned Count; /* Token count */
72 void (*Check)(TokList*); /* Token check function */
73 void* Data; /* Additional data for check */
74 LineInfo* LI; /* Line info for replay */
79 /* Return codes for TokCmp - higher numeric code means better match */
81 tcDifferent, /* Different tokents */
82 tcSameToken, /* Same token, different attribute */
83 tcIdentical /* Identical (token + attribute) */
88 /*****************************************************************************/
90 /*****************************************************************************/
94 TokNode* NewTokNode (void);
95 /* Create and return a token node with the current token value */
97 void FreeTokNode (TokNode* N);
98 /* Free the given token node */
100 void TokSet (TokNode* N);
101 /* Set the scanner token from the given token node. */
103 enum TC TokCmp (const TokNode* N);
104 /* Compare the token given as parameter against the current token */
106 TokList* NewTokList (void);
107 /* Create a new, empty token list */
109 void FreeTokList (TokList* T);
110 /* Delete the token list including all token nodes */
112 token_t GetTokListTerm (token_t Term);
113 /* Determine if the following token list is enclosed in curly braces. This is
114 * the case if the next token is the opening brace. If so, skip it and return
115 * a closing brace, otherwise return Term.
118 void AddCurTok (TokList* T);
119 /* Add the current token to the token list */
121 void PushTokList (TokList* List, const char* Desc);
122 /* Push a token list to be used as input for InputFromStack. This includes
123 * several initializations needed in the token list structure, so don't use
124 * PushInput directly.
129 /* End of toklist.h */