1 /* $OpenBSD: maketab.c,v 1.20 2020/07/30 17:45:44 millert Exp $ */ 2 /**************************************************************** 3 Copyright (C) Lucent Technologies 1997 4 All Rights Reserved 5 6 Permission to use, copy, modify, and distribute this software and 7 its documentation for any purpose and without fee is hereby 8 granted, provided that the above copyright notice appear in all 9 copies and that both that the copyright notice and this 10 permission notice and warranty disclaimer appear in supporting 11 documentation, and that the name Lucent Technologies or any of 12 its entities not be used in advertising or publicity pertaining 13 to distribution of the software without specific, written prior 14 permission. 15 16 LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 17 INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. 18 IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY 19 SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 20 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER 21 IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, 22 ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF 23 THIS SOFTWARE. 24 ****************************************************************/ 25 26 /* 27 * this program makes the table to link function names 28 * and type indices that is used by execute() in run.c. 29 * it finds the indices in awkgram.tab.h, produced by bison. 30 */ 31 32 #include <stdio.h> 33 #include <string.h> 34 #include <stdlib.h> 35 #include "awk.h" 36 #include "awkgram.tab.h" 37 38 struct xx 39 { int token; 40 const char *name; 41 const char *pname; 42 } proc[] = { 43 { PROGRAM, "program", NULL }, 44 { BOR, "boolop", " || " }, 45 { AND, "boolop", " && " }, 46 { NOT, "boolop", " !" }, 47 { NE, "relop", " != " }, 48 { EQ, "relop", " == " }, 49 { LE, "relop", " <= " }, 50 { LT, "relop", " < " }, 51 { GE, "relop", " >= " }, 52 { GT, "relop", " > " }, 53 { ARRAY, "array", NULL }, 54 { INDIRECT, "indirect", "$(" }, 55 { SUBSTR, "substr", "substr" }, 56 { SUB, "sub", "sub" }, 57 { GSUB, "gsub", "gsub" }, 58 { INDEX, "sindex", "sindex" }, 59 { SPRINTF, "awksprintf", "sprintf " }, 60 { ADD, "arith", " + " }, 61 { MINUS, "arith", " - " }, 62 { MULT, "arith", " * " }, 63 { DIVIDE, "arith", " / " }, 64 { MOD, "arith", " % " }, 65 { UMINUS, "arith", " -" }, 66 { UPLUS, "arith", " +" }, 67 { POWER, "arith", " **" }, 68 { PREINCR, "incrdecr", "++" }, 69 { POSTINCR, "incrdecr", "++" }, 70 { PREDECR, "incrdecr", "--" }, 71 { POSTDECR, "incrdecr", "--" }, 72 { CAT, "cat", " " }, 73 { PASTAT, "pastat", NULL }, 74 { PASTAT2, "dopa2", NULL }, 75 { MATCH, "matchop", " ~ " }, 76 { NOTMATCH, "matchop", " !~ " }, 77 { MATCHFCN, "matchop", "matchop" }, 78 { INTEST, "intest", "intest" }, 79 { PRINTF, "awkprintf", "printf" }, 80 { PRINT, "printstat", "print" }, 81 { CLOSE, "closefile", "closefile" }, 82 { DELETE, "awkdelete", "awkdelete" }, 83 { SPLIT, "split", "split" }, 84 { ASSIGN, "assign", " = " }, 85 { ADDEQ, "assign", " += " }, 86 { SUBEQ, "assign", " -= " }, 87 { MULTEQ, "assign", " *= " }, 88 { DIVEQ, "assign", " /= " }, 89 { MODEQ, "assign", " %= " }, 90 { POWEQ, "assign", " ^= " }, 91 { CONDEXPR, "condexpr", " ?: " }, 92 { IF, "ifstat", "if(" }, 93 { WHILE, "whilestat", "while(" }, 94 { FOR, "forstat", "for(" }, 95 { DO, "dostat", "do" }, 96 { IN, "instat", "instat" }, 97 { NEXT, "jump", "next" }, 98 { NEXTFILE, "jump", "nextfile" }, 99 { EXIT, "jump", "exit" }, 100 { BREAK, "jump", "break" }, 101 { CONTINUE, "jump", "continue" }, 102 { RETURN, "jump", "ret" }, 103 { BLTIN, "bltin", "bltin" }, 104 { CALL, "call", "call" }, 105 { ARG, "arg", "arg" }, 106 { VARNF, "getnf", "NF" }, 107 { GETLINE, "awkgetline", "getline" }, 108 { GENSUB, "gensub", "gensub" }, 109 { 0, "", "" }, 110 }; 111 112 #define SIZE (LASTTOKEN - FIRSTTOKEN + 1) 113 const char *table[SIZE]; 114 char *names[SIZE]; 115 116 int main(int argc, char *argv[]) 117 { 118 const struct xx *p; 119 int i, n, tok; 120 char c; 121 FILE *fp; 122 char buf[200], name[200], def[200]; 123 enum { TOK_UNKNOWN, TOK_ENUM, TOK_DEFINE } tokentype = TOK_UNKNOWN; 124 125 printf("#include <stdio.h>\n"); 126 printf("#include \"awk.h\"\n"); 127 printf("#include \"awkgram.tab.h\"\n\n"); 128 129 if (argc != 2) { 130 fprintf(stderr, "usage: maketab YTAB_H\n"); 131 exit(1); 132 } 133 if ((fp = fopen(argv[1], "r")) == NULL) { 134 fprintf(stderr, "maketab can't open %s!\n", argv[1]); 135 exit(1); 136 } 137 printf("static const char * const printname[%d] = {\n", SIZE); 138 i = 0; 139 while (fgets(buf, sizeof buf, fp) != NULL) { 140 // 199 is sizeof(def) - 1 141 if (tokentype != TOK_ENUM) { 142 n = sscanf(buf, "%1c %199s %199s %d", &c, def, name, 143 &tok); 144 if (n == 4 && c == '#' && strcmp(def, "define") == 0) { 145 tokentype = TOK_DEFINE; 146 } else if (tokentype != TOK_UNKNOWN) { 147 continue; 148 } 149 } 150 if (tokentype != TOK_DEFINE) { 151 /* not a valid #define, bison uses enums now */ 152 n = sscanf(buf, "%199s = %d,\n", name, &tok); 153 if (n != 2) 154 continue; 155 tokentype = TOK_ENUM; 156 } 157 if (strcmp(name, "YYSTYPE_IS_DECLARED") == 0) { 158 tokentype = TOK_UNKNOWN; 159 continue; 160 } 161 if (tok < FIRSTTOKEN || tok > LASTTOKEN) { 162 tokentype = TOK_UNKNOWN; 163 /* fprintf(stderr, "maketab: funny token %d %s ignored\n", tok, buf); */ 164 continue; 165 } 166 names[tok-FIRSTTOKEN] = strdup(name); 167 if (names[tok-FIRSTTOKEN] == NULL) { 168 fprintf(stderr, "maketab out of space copying %s", name); 169 exit(1); 170 } 171 printf("\t\"%s\",\t/* %d */\n", name, tok); 172 i++; 173 } 174 printf("};\n\n"); 175 176 for (p=proc; p->token!=0; p++) 177 table[p->token-FIRSTTOKEN] = p->name; 178 printf("\nCell *(*proctab[%d])(Node **, int) = {\n", SIZE); 179 for (i=0; i<SIZE; i++) 180 printf("\t%s,\t/* %s */\n", 181 table[i] ? table[i] : "nullproc", names[i] ? names[i] : ""); 182 printf("};\n\n"); 183 184 printf("const char *tokname(int n)\n"); /* print a tokname() function */ 185 printf("{\n"); 186 printf("\tstatic char buf[100];\n\n"); 187 printf("\tif (n < FIRSTTOKEN || n > LASTTOKEN) {\n"); 188 printf("\t\tsnprintf(buf, sizeof(buf), \"token %%d\", n);\n"); 189 printf("\t\treturn buf;\n"); 190 printf("\t}\n"); 191 printf("\treturn printname[n-FIRSTTOKEN];\n"); 192 printf("}\n"); 193 return 0; 194 } 195