Annotation of src/usr.bin/awk/maketab.c, Revision 1.1
1.1 ! tholo 1: /****************************************************************
! 2: Copyright (C) AT&T and Lucent Technologies 1996
! 3: All Rights Reserved
! 4:
! 5: Permission to use, copy, modify, and distribute this software and
! 6: its documentation for any purpose and without fee is hereby
! 7: granted, provided that the above copyright notice appear in all
! 8: copies and that both that the copyright notice and this
! 9: permission notice and warranty disclaimer appear in supporting
! 10: documentation, and that the names of AT&T or Lucent Technologies
! 11: or any of their entities not be used in advertising or publicity
! 12: pertaining to distribution of the software without specific,
! 13: written prior permission.
! 14:
! 15: AT&T AND LUCENT DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
! 16: SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
! 17: FITNESS. IN NO EVENT SHALL AT&T OR LUCENT OR ANY OF THEIR
! 18: ENTITIES BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
! 19: DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
! 20: DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
! 21: OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE
! 22: USE OR PERFORMANCE OF THIS SOFTWARE.
! 23: ****************************************************************/
! 24:
! 25: /*
! 26: * this program makes the table to link function names
! 27: * and type indices that is used by execute() in run.c.
! 28: * it finds the indices in awkgram.h, produced by yacc.
! 29: */
! 30:
! 31: #include <stdio.h>
! 32: #include <string.h>
! 33: #include <stdlib.h>
! 34: #include "awk.h"
! 35: #include "awkgram.h"
! 36:
! 37: struct xx
! 38: { int token;
! 39: char *name;
! 40: char *pname;
! 41: } proc[] = {
! 42: { PROGRAM, "program", NULL },
! 43: { BOR, "boolop", " || " },
! 44: { AND, "boolop", " && " },
! 45: { NOT, "boolop", " !" },
! 46: { NE, "relop", " != " },
! 47: { EQ, "relop", " == " },
! 48: { LE, "relop", " <= " },
! 49: { LT, "relop", " < " },
! 50: { GE, "relop", " >= " },
! 51: { GT, "relop", " > " },
! 52: { ARRAY, "array", NULL },
! 53: { INDIRECT, "indirect", "$(" },
! 54: { SUBSTR, "substr", "substr" },
! 55: { SUB, "sub", "sub" },
! 56: { GSUB, "gsub", "gsub" },
! 57: { INDEX, "sindex", "sindex" },
! 58: { SPRINTF, "awksprintf", "sprintf " },
! 59: { ADD, "arith", " + " },
! 60: { MINUS, "arith", " - " },
! 61: { MULT, "arith", " * " },
! 62: { DIVIDE, "arith", " / " },
! 63: { MOD, "arith", " % " },
! 64: { UMINUS, "arith", " -" },
! 65: { POWER, "arith", " **" },
! 66: { PREINCR, "incrdecr", "++" },
! 67: { POSTINCR, "incrdecr", "++" },
! 68: { PREDECR, "incrdecr", "--" },
! 69: { POSTDECR, "incrdecr", "--" },
! 70: { CAT, "cat", " " },
! 71: { PASTAT, "pastat", NULL },
! 72: { PASTAT2, "dopa2", NULL },
! 73: { MATCH, "matchop", " ~ " },
! 74: { NOTMATCH, "matchop", " !~ " },
! 75: { MATCHFCN, "matchop", "matchop" },
! 76: { INTEST, "intest", "intest" },
! 77: { PRINTF, "awkprintf", "printf" },
! 78: { PRINT, "printstat", "print" },
! 79: { CLOSE, "closefile", "closefile" },
! 80: { DELETE, "adelete", "adelete" },
! 81: { SPLIT, "split", "split" },
! 82: { ASSIGN, "assign", " = " },
! 83: { ADDEQ, "assign", " += " },
! 84: { SUBEQ, "assign", " -= " },
! 85: { MULTEQ, "assign", " *= " },
! 86: { DIVEQ, "assign", " /= " },
! 87: { MODEQ, "assign", " %= " },
! 88: { POWEQ, "assign", " ^= " },
! 89: { CONDEXPR, "condexpr", " ?: " },
! 90: { IF, "ifstat", "if(" },
! 91: { WHILE, "whilestat", "while(" },
! 92: { FOR, "forstat", "for(" },
! 93: { DO, "dostat", "do" },
! 94: { IN, "instat", "instat" },
! 95: { NEXT, "jump", "next" },
! 96: { NEXTFILE, "jump", "nextfile" },
! 97: { EXIT, "jump", "exit" },
! 98: { BREAK, "jump", "break" },
! 99: { CONTINUE, "jump", "continue" },
! 100: { RETURN, "jump", "ret" },
! 101: { BLTIN, "bltin", "bltin" },
! 102: { CALL, "call", "call" },
! 103: { ARG, "arg", "arg" },
! 104: { VARNF, "getnf", "NF" },
! 105: { GETLINE, "getline", "getline" },
! 106: { 0, "", "" },
! 107: };
! 108:
! 109: #define SIZE (LASTTOKEN - FIRSTTOKEN + 1)
! 110: char *table[SIZE];
! 111: char *names[SIZE];
! 112:
! 113: int main(int argc, char *argv[])
! 114: {
! 115: struct xx *p;
! 116: int i, n, tok;
! 117: char c;
! 118: FILE *fp;
! 119: char buf[200], name[200], def[200];
! 120:
! 121: printf("#include <stdio.h>\n");
! 122: printf("#include \"awk.h\"\n");
! 123: printf("#include \"awkgram.h\"\n\n");
! 124: for (i = SIZE; --i >= 0; )
! 125: names[i] = "";
! 126:
! 127: if ((fp = fopen("awkgram.h", "r")) == NULL) {
! 128: fprintf(stderr, "maketab can't open awkgram.h!\n");
! 129: exit(1);
! 130: }
! 131: printf("static char *printname[%d] = {\n", SIZE);
! 132: i = 0;
! 133: while (fgets(buf, sizeof buf, fp) != NULL) {
! 134: n = sscanf(buf, "%1c %s %s %d", &c, def, name, &tok);
! 135: if (c != '#' || (n != 4 && strcmp(def,"define") != 0)) /* not a valid #define */
! 136: continue;
! 137: if (tok < FIRSTTOKEN || tok > LASTTOKEN) {
! 138: fprintf(stderr, "maketab funny token %d %s\n", tok, buf);
! 139: exit(1);
! 140: }
! 141: names[tok-FIRSTTOKEN] = (char *) malloc(strlen(name)+1);
! 142: strcpy(names[tok-FIRSTTOKEN], name);
! 143: printf("\t(char *) \"%s\",\t/* %d */\n", name, tok);
! 144: i++;
! 145: }
! 146: printf("};\n\n");
! 147:
! 148: for (p=proc; p->token!=0; p++)
! 149: table[p->token-FIRSTTOKEN] = p->name;
! 150: printf("\nCell *(*proctab[%d])(Node **, int) = {\n", SIZE);
! 151: for (i=0; i<SIZE; i++)
! 152: if (table[i]==0)
! 153: printf("\tnullproc,\t/* %s */\n", names[i]);
! 154: else
! 155: printf("\t%s,\t/* %s */\n", table[i], names[i]);
! 156: printf("};\n\n");
! 157:
! 158: printf("char *tokname(int n)\n"); /* print a tokname() function */
! 159: printf("{\n");
! 160: printf(" static char buf[100];\n\n");
! 161: printf(" if (n < FIRSTTOKEN || n > LASTTOKEN) {\n");
! 162: printf(" sprintf(buf, \"token %%d\", n);\n");
! 163: printf(" return buf;\n");
! 164: printf(" }\n");
! 165: printf(" return printname[n-FIRSTTOKEN];\n");
! 166: printf("}\n");
! 167: return 0;
! 168: }
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