1 /****************************************************************
2 Copyright (C) Lucent Technologies 1997
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 name Lucent Technologies or any of
11 its entities not be used in advertising or publicity pertaining
12 to distribution of the software without specific, written prior
13 permission.
14
15 LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
16 INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
17 IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
18 SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
19 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
20 IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
21 ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
22 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 ytab.h, produced by yacc.
29 */
30
31 #include <stdio.h>
32 #include <string.h>
33 #include <stdlib.h>
34 #include "awk.h"
35 #include "ytab.h"
36
37 struct xx
38 { int token;
39 const char *name;
40 const 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 { UPLUS, "arith", " +" },
66 { POWER, "arith", " **" },
67 { PREINCR, "incrdecr", "++" },
68 { POSTINCR, "incrdecr", "++" },
69 { PREDECR, "incrdecr", "--" },
70 { POSTDECR, "incrdecr", "--" },
71 { CAT, "cat", " " },
72 { PASTAT, "pastat", NULL },
73 { PASTAT2, "dopa2", NULL },
74 { MATCH, "matchop", " ~ " },
75 { NOTMATCH, "matchop", " !~ " },
76 { MATCHFCN, "matchop", "matchop" },
77 { INTEST, "intest", "intest" },
78 { PRINTF, "awkprintf", "printf" },
79 { PRINT, "printstat", "print" },
80 { CLOSE, "closefile", "closefile" },
81 { DELETE, "awkdelete", "awkdelete" },
82 { SPLIT, "split", "split" },
83 { ASSIGN, "assign", " = " },
84 { ADDEQ, "assign", " += " },
85 { SUBEQ, "assign", " -= " },
86 { MULTEQ, "assign", " *= " },
87 { DIVEQ, "assign", " /= " },
88 { MODEQ, "assign", " %= " },
89 { POWEQ, "assign", " ^= " },
90 { CONDEXPR, "condexpr", " ?: " },
91 { IF, "ifstat", "if(" },
92 { WHILE, "whilestat", "while(" },
93 { FOR, "forstat", "for(" },
94 { DO, "dostat", "do" },
95 { IN, "instat", "instat" },
96 { NEXT, "jump", "next" },
97 { NEXTFILE, "jump", "nextfile" },
98 { EXIT, "jump", "exit" },
99 { BREAK, "jump", "break" },
100 { CONTINUE, "jump", "continue" },
101 { RETURN, "jump", "ret" },
102 { BLTIN, "bltin", "bltin" },
103 { CALL, "call", "call" },
104 { ARG, "arg", "arg" },
105 { VARNF, "getnf", "NF" },
106 { GETLINE, "awkgetline", "getline" },
107 { 0, "", "" },
108 };
109
110 #define SIZE (LASTTOKEN - FIRSTTOKEN + 1)
111 const char *table[SIZE];
112 char *names[SIZE];
113
main(int argc,char * argv[])114 int main(int argc, char *argv[])
115 {
116 const struct xx *p;
117 int i, n, tok;
118 char c;
119 FILE *fp;
120 char buf[200], name[200], def[200];
121
122 printf("#include <stdio.h>\n");
123 printf("#include \"awk.h\"\n");
124 printf("#include \"ytab.h\"\n\n");
125
126 if (argc != 2) {
127 fprintf(stderr, "usage: maketab YTAB_H\n");
128 exit(1);
129 }
130 if ((fp = fopen(argv[1], "r")) == NULL) {
131 fprintf(stderr, "maketab can't open %s!\n", argv[1]);
132 exit(1);
133 }
134 printf("static const char * const printname[%d] = {\n", SIZE);
135 i = 0;
136 while (fgets(buf, sizeof buf, fp) != NULL) {
137 // 199 is sizeof(def) - 1
138 n = sscanf(buf, "%1c %199s %199s %d", &c, def, name, &tok);
139 if (c != '#' || (n != 4 && strcmp(def,"define") != 0)) /* not a valid #define */
140 continue;
141 if (strcmp(name, "YYSTYPE_IS_DECLARED") == 0)
142 continue;
143 if (tok < FIRSTTOKEN || tok > LASTTOKEN) {
144 /* fprintf(stderr, "maketab funny token %d %s ignored\n", tok, buf); */
145 continue;
146 }
147 names[tok-FIRSTTOKEN] = strdup(name);
148 if (names[tok-FIRSTTOKEN] == NULL) {
149 fprintf(stderr, "maketab out of space copying %s", name);
150 continue;
151 }
152 printf("\t\"%s\",\t/* %d */\n", name, tok);
153 i++;
154 }
155 printf("};\n\n");
156
157 for (p=proc; p->token!=0; p++)
158 table[p->token-FIRSTTOKEN] = p->name;
159 printf("\nCell *(*proctab[%d])(Node **, int) = {\n", SIZE);
160 for (i=0; i<SIZE; i++)
161 printf("\t%s,\t/* %s */\n",
162 table[i] ? table[i] : "nullproc", names[i] ? names[i] : "");
163 printf("};\n\n");
164
165 printf("const char *tokname(int n)\n"); /* print a tokname() function */
166 printf("{\n");
167 printf("\tstatic char buf[100];\n\n");
168 printf("\tif (n < FIRSTTOKEN || n > LASTTOKEN) {\n");
169 printf("\t\tsnprintf(buf, sizeof(buf), \"token %%d\", n);\n");
170 printf("\t\treturn buf;\n");
171 printf("\t}\n");
172 printf("\treturn printname[n-FIRSTTOKEN];\n");
173 printf("}\n");
174 return 0;
175 }
176