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 awkgram.tab.h, produced by bison.
29 */
30
31 #include <stdio.h>
32 #include <string.h>
33 #include <stdlib.h>
34 #include "awk.h"
35 #include "awkgram.tab.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 enum { TOK_UNKNOWN, TOK_ENUM, TOK_DEFINE } tokentype = TOK_UNKNOWN;
122
123 printf("#include <stdio.h>\n");
124 printf("#include \"awk.h\"\n");
125 printf("#include \"awkgram.tab.h\"\n\n");
126
127 if (argc != 2) {
128 fprintf(stderr, "usage: maketab YTAB_H\n");
129 exit(1);
130 }
131 if ((fp = fopen(argv[1], "r")) == NULL) {
132 fprintf(stderr, "maketab can't open %s!\n", argv[1]);
133 exit(1);
134 }
135 printf("static const char * const printname[%d] = {\n", SIZE);
136 i = 0;
137 while (fgets(buf, sizeof buf, fp) != NULL) {
138 // 199 is sizeof(def) - 1
139 if (tokentype != TOK_ENUM) {
140 n = sscanf(buf, "%1c %199s %199s %d", &c, def, name,
141 &tok);
142 if (n == 4 && c == '#' && strcmp(def, "define") == 0) {
143 tokentype = TOK_DEFINE;
144 } else if (tokentype != TOK_UNKNOWN) {
145 continue;
146 }
147 }
148 if (tokentype != TOK_DEFINE) {
149 /* not a valid #define, bison uses enums now */
150 n = sscanf(buf, "%199s = %d,\n", name, &tok);
151 if (n != 2)
152 continue;
153 tokentype = TOK_ENUM;
154 }
155 if (strcmp(name, "YYSTYPE_IS_DECLARED") == 0) {
156 tokentype = TOK_UNKNOWN;
157 continue;
158 }
159 if (tok < FIRSTTOKEN || tok > LASTTOKEN) {
160 tokentype = TOK_UNKNOWN;
161 /* fprintf(stderr, "maketab funny token %d %s ignored\n", tok, buf); */
162 continue;
163 }
164 names[tok-FIRSTTOKEN] = strdup(name);
165 if (names[tok-FIRSTTOKEN] == NULL) {
166 fprintf(stderr, "maketab out of space copying %s", name);
167 continue;
168 }
169 printf("\t\"%s\",\t/* %d */\n", name, tok);
170 i++;
171 }
172 printf("};\n\n");
173
174 for (p=proc; p->token!=0; p++)
175 table[p->token-FIRSTTOKEN] = p->name;
176 printf("\nCell *(*proctab[%d])(Node **, int) = {\n", SIZE);
177 for (i=0; i<SIZE; i++)
178 printf("\t%s,\t/* %s */\n",
179 table[i] ? table[i] : "nullproc", names[i] ? names[i] : "");
180 printf("};\n\n");
181
182 printf("const char *tokname(int n)\n"); /* print a tokname() function */
183 printf("{\n");
184 printf("\tstatic char buf[100];\n\n");
185 printf("\tif (n < FIRSTTOKEN || n > LASTTOKEN) {\n");
186 printf("\t\tsnprintf(buf, sizeof(buf), \"token %%d\", n);\n");
187 printf("\t\treturn buf;\n");
188 printf("\t}\n");
189 printf("\treturn printname[n-FIRSTTOKEN];\n");
190 printf("}\n");
191 return 0;
192 }
193