4.3BSD - /usr/src/new/icon/tran/lex.h

   1: /*
   2:  * Token table structure.
   3:  */
   4: 
   5: struct toktab {
   6:    char *t_word;        /* token */
   7:    int  t_type;         /* token type returned by yylex */
   8:    int  t_flags;        /* flags for semicolon insertion */
   9:    };
  10: 
  11: extern struct toktab toktab[];  /* token table */
  12: extern struct toktab *restab[]; /* reserved word index */
  13: 
  14: #define T_IDENT     &toktab[0]
  15: #define T_INT       &toktab[1]
  16: #define T_REAL      &toktab[2]
  17: #define T_STRING    &toktab[3]
  18: #define T_CSET      &toktab[4]
  19: #define T_EOF       &toktab[5]
  20: 
  21: /*
  22:  * t_flags values for token table.
  23:  */
  24: 
  25: #define BEGINNER 1      /* token can follow a semicolon */
  26: #define ENDER    2      /* token can precede a semicolon */
  27: 
  28: /*
  29:  * Operator table - a finite-state automaton for recognizing Icon operators.
  30:  */
  31: 
  32: struct optab {
  33:    char o_input;
  34:    char o_action;
  35:    int o_val;
  36:    };
  37: 
  38: extern struct optab state0[];
  39: extern struct optab state1[];
  40: extern struct optab state2[];
  41: extern struct optab state3[];
  42: extern struct optab state4[];
  43: extern struct optab state5[];
  44: extern struct optab state6[];
  45: extern struct optab state7[];
  46: extern struct optab state8[];
  47: extern struct optab state9[];
  48: extern struct optab state10[];
  49: extern struct optab state11[];
  50: extern struct optab state12[];
  51: extern struct optab state13[];
  52: extern struct optab state14[];
  53: extern struct optab state15[];
  54: extern struct optab state16[];
  55: extern struct optab state17[];
  56: extern struct optab state18[];
  57: extern struct optab state19[];
  58: extern struct optab state20[];
  59: extern struct optab state21[];
  60: extern struct optab state22[];
  61: extern struct optab state23[];
  62: extern struct optab state24[];
  63: extern struct optab state25[];
  64: extern struct optab state26[];
  65: extern struct optab state27[];
  66: extern struct optab state28[];
  67: extern struct optab state29[];
  68: extern struct optab state30[];
  69: extern struct optab state31[];
  70: extern struct optab state32[];
  71: extern struct optab state33[];
  72: extern struct optab state34[];
  73: extern struct optab state35[];
  74: extern struct optab state36[];
  75: extern struct optab state37[];
  76: extern struct optab state38[];
  77: extern struct optab state39[];
  78: extern struct optab state40[];
  79: extern struct optab state41[];
  80: extern struct optab state42[];
  81: extern struct optab state43[];
  82: extern struct optab state44[];
  83: extern struct optab state45[];
  84: extern struct optab state46[];
  85: extern struct optab state47[];
  86: extern struct optab state48[];
  87: extern struct optab state49[];
  88: extern struct optab state50[];
  89: extern struct optab state51[];
  90: extern struct optab state52[];
  91: extern struct optab state53[];
  92: extern struct optab state54[];
  93: extern struct optab state55[];
  94: extern struct optab state56[];
  95: extern struct optab state57[];
  96: extern struct optab state58[];
  97: extern struct optab state59[];
  98: extern struct optab state60[];
  99: extern struct optab state61[];
 100: 
 101: /*
 102:  * o_action values.
 103:  */
 104: 
 105: #define A_GOTO   1  /* shift input and goto new state o_val */
 106: #define A_ERROR  2  /* illegal operator */
 107: #define A_RETURN 3  /* return o_val, save input char */
 108: #define A_IMMRET 4  /* return o_val, discard input char */
 109: 
 110: /*
 111:  * Miscellaneous.
 112:  */
 113: 
 114: #define isoctal(c) ((c)>='0'&&(c)<='7') /* macro to test for octal digit */
 115: #define NEXTCHAR   nextchar()       /* macro to get next character */
 116: #define PUSHCHAR(c) peekc=(c)       /* macro to push back a character */
 117: 
 118: #define COMMENT '#'         /* comment beginner */
 119: #define ESCAPE  '\\'            /* string literal escape character */

Defined struct's

Defined macros

Usage of this include