git.sur5r.net Git - cc65/blob - src/cc65/scanner.h

   1 /*****************************************************************************/
   2 /*                                                                           */
   3 /*                                 scanner.h                                 */
   4 /*                                                                           */
   5 /*                      Source file line info structure                      */
   6 /*                                                                           */
   7 /*                                                                           */
   8 /*                                                                           */
   9 /* (C) 1998-2003 Ullrich von Bassewitz                                       */
  10 /*               Römerstrasse 52                                             */
  11 /*               D-70794 Filderstadt                                         */
  12 /* EMail:        uz@cc65.org                                                 */
  13 /*                                                                           */
  14 /*                                                                           */
  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.                                    */
  18 /*                                                                           */
  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:                            */
  22 /*                                                                           */
  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              */
  30 /*    distribution.                                                          */
  31 /*                                                                           */
  32 /*****************************************************************************/
  33
  34
  35
  36 #ifndef SCANNER_H
  37 #define SCANNER_H
  38
  39
  40
  41 /* cc65 */
  42 #include "datatype.h"
  43 #include "ident.h"
  44 #include "lineinfo.h"
  45
  46
  47
  48 /*****************************************************************************/
  49 /*                             Token definitions                             */
  50 /*****************************************************************************/
  51
  52
  53
  54 typedef enum token_t {
  55     TOK_CEOF,
  56
  57     TOK_AUTO,
  58     TOK_EXTERN,
  59     TOK_REGISTER,
  60     TOK_RESTRICT,
  61     TOK_STATIC,
  62     TOK_TYPEDEF,
  63     TOK_CONST,
  64     TOK_VOLATILE,
  65
  66     /* Tokens denoting types */
  67     TOK_FIRSTTYPE,
  68     TOK_ENUM            = TOK_FIRSTTYPE,
  69     TOK_CHAR,
  70     TOK_INT,
  71     TOK_DOUBLE,
  72     TOK_FLOAT,
  73     TOK_LONG,
  74     TOK_UNSIGNED,
  75     TOK_SIGNED,
  76     TOK_SHORT,
  77     TOK_STRUCT,
  78     TOK_UNION,
  79     TOK_VOID,
  80     TOK_LASTTYPE        = TOK_VOID,
  81
  82     /* Control statements */
  83     TOK_DO,
  84     TOK_FOR,
  85     TOK_GOTO,
  86     TOK_IF,
  87     TOK_RETURN,
  88     TOK_SWITCH,
  89     TOK_WHILE,
  90
  91     TOK_ASM,
  92     TOK_CASE,
  93     TOK_DEFAULT,
  94     TOK_BREAK,
  95     TOK_CONTINUE,
  96     TOK_ELSE,
  97     TOK_ELLIPSIS,
  98     TOK_SIZEOF,
  99
 100     TOK_IDENT,
 101     TOK_SEMI,
 102
 103     /* Primary operators */
 104     TOK_LBRACK,
 105     TOK_LPAREN,
 106     TOK_DOT,
 107     TOK_PTR_REF,
 108
 109     TOK_LCURLY,
 110     TOK_RBRACK,
 111     TOK_COMP,
 112     TOK_INC,
 113     TOK_PLUS_ASSIGN,
 114     TOK_PLUS,
 115     TOK_COMMA,
 116     TOK_DEC,
 117     TOK_MINUS_ASSIGN,
 118     TOK_RCURLY,
 119     TOK_MINUS,
 120     TOK_MUL_ASSIGN,
 121     TOK_STAR,
 122     TOK_MUL = TOK_STAR,         /* Alias */
 123     TOK_DIV_ASSIGN,
 124     TOK_DIV,
 125     TOK_BOOL_AND,
 126     TOK_AND_ASSIGN,
 127     TOK_AND,
 128     TOK_NE,
 129     TOK_BOOL_NOT,
 130     TOK_BOOL_OR,
 131     TOK_OR_ASSIGN,
 132     TOK_OR,
 133     TOK_EQ,
 134     TOK_ASSIGN,
 135
 136     /* Inequalities */
 137     TOK_LE,
 138     TOK_LT,
 139     TOK_GE,
 140     TOK_GT,
 141
 142     TOK_SHL_ASSIGN,
 143     TOK_SHL,
 144     TOK_SHR_ASSIGN,
 145     TOK_SHR,
 146     TOK_XOR_ASSIGN,
 147     TOK_XOR,
 148     TOK_MOD_ASSIGN,
 149     TOK_MOD,
 150     TOK_QUEST,
 151     TOK_COLON,
 152     TOK_RPAREN,
 153     TOK_SCONST,
 154     TOK_ICONST,
 155     TOK_CCONST,
 156     TOK_FCONST,
 157
 158     TOK_ATTRIBUTE,
 159     TOK_FAR,
 160     TOK_NEAR,
 161     TOK_FASTCALL,
 162     TOK_A,
 163     TOK_X,
 164     TOK_Y,
 165     TOK_AX,
 166     TOK_EAX,
 167
 168     TOK_PRAGMA
 169 } token_t;
 170
 171
 172
 173 /*****************************************************************************/
 174 /*                                   data                                    */
 175 /*****************************************************************************/
 176
 177
 178
 179 /* Token stuff */
 180 typedef struct Token Token;
 181 struct Token {
 182     token_t     Tok;            /* The token itself */
 183     long        IVal;           /* The integer attribute */
 184     double      FVal;           /* The float attribute */
 185     ident       Ident;          /* Identifier if IDENT */
 186     LineInfo*   LI;             /* Source line where the token comes from */
 187     type*       Type;           /* Type if integer or float constant */
 188 };
 189
 190 extern Token CurTok;            /* The current token */
 191 extern Token NextTok;           /* The next token */
 192
 193
 194
 195 /*****************************************************************************/
 196 /*                                   code                                    */
 197 /*****************************************************************************/
 198
 199
 200
 201 void SymName (char* s);
 202 /* Get symbol from input stream */
 203
 204 int IsSym (char* s);
 205 /* Get symbol from input stream or return 0 if not a symbol. */
 206
 207 void NextToken (void);
 208 /* Get next token from input stream */
 209
 210 void SkipTokens (const token_t* TokenList, unsigned TokenCount);
 211 /* Skip tokens until we reach TOK_CEOF or a token in the given token list.
 212  * This routine is used for error recovery.
 213  */
 214
 215 int Consume (token_t Token, const char* ErrorMsg);
 216 /* Eat token if it is the next in the input stream, otherwise print an error
 217  * message. Returns true if the token was found and false otherwise.
 218  */
 219
 220 int ConsumeColon (void);
 221 /* Check for a colon and skip it. */
 222
 223 int ConsumeSemi (void);
 224 /* Check for a semicolon and skip it. */
 225
 226 int ConsumeComma (void);
 227 /* Check for a comma and skip it. */
 228
 229 int ConsumeLParen (void);
 230 /* Check for a left parenthesis and skip it */
 231
 232 int ConsumeRParen (void);
 233 /* Check for a right parenthesis and skip it */
 234
 235 int ConsumeLBrack (void);
 236 /* Check for a left bracket and skip it */
 237
 238 int ConsumeRBrack (void);
 239 /* Check for a right bracket and skip it */
 240
 241 int ConsumeLCurly (void);
 242 /* Check for a left curly brace and skip it */
 243
 244 int ConsumeRCurly (void);
 245 /* Check for a right curly brace and skip it */
 246
 247
 248
 249 /* End of scanner.h */
 250 #endif
 251
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