1 /*****************************************************************************/
5 /* The scanner for the ca65 macroassembler */
9 /* (C) 1998-2003 Ullrich von Bassewitz */
10 /* Römerstrasse 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 /*****************************************************************************/
47 /*****************************************************************************/
49 /*****************************************************************************/
55 TOK_NONE, /* Start value, invalid */
56 TOK_EOF, /* End of input file */
57 TOK_SEP, /* Separator (usually newline) */
58 TOK_IDENT, /* An identifier */
59 TOK_MNEMO, /* A mnemonic */
61 TOK_INTCON, /* Integer constant */
62 TOK_CHARCON, /* Character constant */
63 TOK_STRCON, /* String constant */
66 TOK_X, /* X register */
67 TOK_Y, /* Y register */
68 TOK_S, /* S register */
71 TOK_ULABEL, /* :++ or :-- */
88 TOK_STAR = TOK_MUL, /* Alias */
98 TOK_PC, /* $ if enabled */
99 TOK_NAMESPACE, /* :: */
109 TOK_OVERRIDE_ZP, /* z: */
110 TOK_OVERRIDE_ABS, /* a: */
111 TOK_OVERRIDE_FAR, /* f: */
113 TOK_MACPARAM, /* Macro parameter, not generated by scanner */
114 TOK_REPCOUNTER, /* Repeat counter, not generated by scanner */
116 /* The next ones are tokens for the pseudo instructions. Keep together! */
118 TOK_A16 = TOK_FIRSTPSEUDO,
229 TOK_LASTPSEUDO = TOK_ZEROPAGE,
231 TOK_COUNT /* Count of tokens */
236 /* Scanner variables */
237 #define MAX_INPUT_FILES 254 /* No more than this files total */
238 #define MAX_STR_LEN 255 /* Maximum length of any string */
239 extern enum Token Tok; /* Current token */
240 extern int WS; /* Flag: Whitespace before token */
241 extern long IVal; /* Integer token attribute */
242 extern char SVal [MAX_STR_LEN+1]; /* String token attribute */
244 extern FilePos CurPos; /* Name and position in file */
245 extern int ForcedEnd; /* Force end of assembly */
249 /*****************************************************************************/
251 /*****************************************************************************/
255 void NewInputFile (const char* Name);
256 /* Open a new input file */
258 void DoneInputFile (void);
259 /* Close the current input file */
261 void NewInputData (char* Data, int Malloced);
262 /* Add a chunk of input data to the input stream */
264 void LocaseSVal (void);
265 /* Make SVal lower case */
267 void UpcaseSVal (void);
268 /* Make SVal upper case */
270 void NextRawTok (void);
271 /* Read the next raw token from the input stream */
273 int TokHasSVal (enum Token Tok);
274 /* Return true if the given token has an attached SVal */
276 int TokHasIVal (enum Token Tok);
277 /* Return true if the given token has an attached IVal */
279 #if defined(HAVE_INLINE)
280 INLINE int TokIsSep (enum Token T)
281 /* Return true if this is a separator token */
283 return (T == TOK_SEP || T == TOK_EOF);
286 # define TokIsSep(T) (T == TOK_SEP || T == TOK_EOF)
289 int GetSubKey (const char** Keys, unsigned Count);
290 /* Search for a subkey in a table of keywords. The current token must be an
291 * identifier and all keys must be in upper case. The identifier will be
292 * uppercased in the process. The function returns the index of the keyword,
293 * or -1 if the keyword was not found.
296 unsigned ParseAddrSize (void);
297 /* Check if the next token is a keyword that denotes an address size specifier.
298 * If so, return the corresponding address size constant, otherwise output an
299 * error message and return ADDR_SIZE_DEFAULT.
302 void InitScanner (const char* InFile);
303 /* Initialize the scanner, open the given input file */
305 void DoneScanner (void);
306 /* Release scanner resources */
310 /* End of scanner.h */