1 /*****************************************************************************/
5 /* The scanner for the ca65 macroassembler */
9 /* (C) 1998-2000 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 /*****************************************************************************/
46 /*****************************************************************************/
48 /*****************************************************************************/
54 TOK_NONE, /* Start value, invalid */
55 TOK_EOF, /* End of input file */
56 TOK_SEP, /* Separator (usually newline) */
57 TOK_IDENT, /* An identifier */
58 TOK_MNEMO, /* A mnemonic */
60 TOK_INTCON, /* Integer constant */
61 TOK_CHARCON, /* Character constant */
62 TOK_STRCON, /* String constant */
65 TOK_X, /* X register */
66 TOK_Y, /* Y register */
67 TOK_S, /* S register */
69 TOK_ULABEL, /* :++ or :-- */
86 TOK_STAR = TOK_MUL, /* Alias */
96 TOK_PC, /* $ if enabled */
97 TOK_NAMESPACE, /* :: */
107 TOK_MACPARAM, /* Macro parameter, not generated by scanner */
108 TOK_REPCOUNTER, /* Repeat counter, not generated by scanner */
110 /* The next ones are tokens for the pseudo instructions. Keep together! */
112 TOK_A16 = TOK_FIRSTPSEUDO,
205 TOK_LASTPSEUDO = TOK_ZEROPAGE,
207 TOK_COUNT /* Count of tokens */
212 /* Scanner variables */
213 #define MAX_INPUT_FILES 254 /* No more than this files total */
214 #define MAX_STR_LEN 255 /* Maximum length of any string */
215 extern enum Token Tok; /* Current token */
216 extern int WS; /* Flag: Whitespace before token */
217 extern long IVal; /* Integer token attribute */
218 extern char SVal [MAX_STR_LEN+1]; /* String token attribute */
220 extern FilePos CurPos; /* Name and position in file */
221 extern int ForcedEnd; /* Force end of assembly */
225 /*****************************************************************************/
227 /*****************************************************************************/
231 void NewInputFile (const char* Name);
232 /* Open a new input file */
234 void DoneInputFile (void);
235 /* Close the current input file */
237 void NewInputData (const char* Data, int Malloced);
238 /* Add a chunk of input data to the input stream */
240 void LocaseSVal (void);
241 /* Make SVal lower case */
243 void UpcaseSVal (void);
244 /* Make SVal upper case */
246 void NextRawTok (void);
247 /* Read the next raw token from the input stream */
249 int TokHasSVal (enum Token Tok);
250 /* Return true if the given token has an attached SVal */
252 int TokHasIVal (enum Token Tok);
253 /* Return true if the given token has an attached IVal */
255 int GetSubKey (const char** Keys, unsigned Count);
256 /* Search for a subkey in a table of keywords. The current token must be an
257 * identifier and all keys must be in upper case. The identifier will be
258 * uppercased in the process. The function returns the index of the keyword,
259 * or -1 if the keyword was not found.
262 void InitScanner (const char* InFile);
263 /* Initialize the scanner, open the given input file */
265 void DoneScanner (void);
266 /* Release scanner resources */
270 /* End of scanner.h */