151 lines
4.1 KiB
C
151 lines
4.1 KiB
C
/* Copyright (c) 1990, 1991 UNIX System Laboratories, Inc. */
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/* Copyright (c) 1984, 1986, 1987, 1988, 1989, 1990 AT&T */
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/* All Rights Reserved */
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/* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF */
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/* UNIX System Laboratories, Inc. */
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/* The copyright notice above does not evidence any */
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/* actual or intended publication of such source code. */
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#ident "@(#)awk:maketab.c 2.5"
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#include <stdio.h>
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#include <string.h>
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#include "awk.h"
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#include "y.tab.h"
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struct xx
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{ int token;
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char *name;
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char *pname;
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} proc[] = {
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{ PROGRAM, "program", NULL },
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{ BOR, "boolop", " || " },
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{ AND, "boolop", " && " },
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{ NOT, "boolop", " !" },
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{ NE, "relop", " != " },
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{ EQ, "relop", " == " },
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{ LE, "relop", " <= " },
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{ LT, "relop", " < " },
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{ GE, "relop", " >= " },
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{ GT, "relop", " > " },
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{ ARRAY, "array", NULL },
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{ INDIRECT, "indirect", "$(" },
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{ SUBSTR, "substr", "substr" },
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{ SUB, "sub", "sub" },
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{ GSUB, "gsub", "gsub" },
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{ INDEX, "sindex", "sindex" },
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{ SPRINTF, "asprintf", "sprintf " },
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{ ADD, "arith", " + " },
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{ MINUS, "arith", " - " },
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{ MULT, "arith", " * " },
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{ DIVIDE, "arith", " / " },
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{ MOD, "arith", " % " },
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{ UMINUS, "arith", " -" },
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{ POWER, "arith", " **" },
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{ PREINCR, "incrdecr", "++" },
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{ POSTINCR, "incrdecr", "++" },
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{ PREDECR, "incrdecr", "--" },
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{ POSTDECR, "incrdecr", "--" },
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{ CAT, "cat", " " },
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{ PASTAT, "pastat", NULL },
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{ PASTAT2, "dopa2", NULL },
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{ MATCH, "matchop", " ~ " },
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{ NOTMATCH, "matchop", " !~ " },
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{ MATCHFCN, "matchop", "matchop" },
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{ INTEST, "intest", "intest" },
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{ PRINTF, "aprintf", "printf" },
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{ PRINT, "print", "print" },
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{ CLOSE, "closefile", "closefile" },
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{ DELETE, "delete", "delete" },
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{ SPLIT, "split", "split" },
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{ ASSIGN, "assign", " = " },
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{ ADDEQ, "assign", " += " },
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{ SUBEQ, "assign", " -= " },
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{ MULTEQ, "assign", " *= " },
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{ DIVEQ, "assign", " /= " },
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{ MODEQ, "assign", " %= " },
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{ POWEQ, "assign", " ^= " },
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{ CONDEXPR, "condexpr", " ?: " },
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{ IF, "ifstat", "if(" },
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{ WHILE, "whilestat", "while(" },
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{ FOR, "forstat", "for(" },
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{ DO, "dostat", "do" },
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{ IN, "instat", "instat" },
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{ NEXT, "jump", "next" },
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{ EXIT, "jump", "exit" },
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{ BREAK, "jump", "break" },
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{ CONTINUE, "jump", "continue" },
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{ RETURN, "jump", "ret" },
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{ BLTIN, "bltin", "bltin" },
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{ CALL, "call", "call" },
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{ ARG, "arg", "arg" },
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{ VARNF, "getnf", "NF" },
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{ GETLINE, "getline", "getline" },
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{ 0, "", "" },
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};
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#define SIZE LASTTOKEN - FIRSTTOKEN + 1
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char *table[SIZE];
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char *names[SIZE];
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main()
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{
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struct xx *p;
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int i, n, tok;
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char c;
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FILE *fp;
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char buf[100], name[100], def[100];
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printf("#include \"awk.h\"\n");
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printf("#include \"y.tab.h\"\n\n");
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printf("Cell *nullproc();\n");
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for (i = SIZE; --i >= 0; )
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names[i] = "";
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for (p=proc; p->token!=0; p++)
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if (p == proc || strcmp(p->name, (p-1)->name))
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printf("extern Cell *%s();\n", p->name);
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if ((fp = fopen("y.tab.h", "r")) == NULL) {
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fprintf(stderr, "maketab can't open y.tab.h!\n");
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exit(1);
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}
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printf("static uchar *printname[%d] = {\n", SIZE);
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i = 0;
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while (fgets(buf, sizeof buf, fp) != NULL) {
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n = sscanf(buf, "%1c %s %s %d", &c, def, name, &tok);
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if (c != '#' || n != 4 && strcmp(def,"define") != 0) /* not a valid #define */
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continue;
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if (tok < FIRSTTOKEN || tok > LASTTOKEN) {
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fprintf(stderr, "maketab funny token %d %s\n", tok, buf);
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exit(1);
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}
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names[tok-FIRSTTOKEN] = (char *) malloc(strlen(name)+1);
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strcpy(names[tok-FIRSTTOKEN], name);
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printf("\t(uchar *) \"%s\",\t/* %d */\n", name, tok);
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i++;
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}
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printf("};\n\n");
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for (p=proc; p->token!=0; p++)
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table[p->token-FIRSTTOKEN] = p->name;
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printf("\nCell *(*proctab[%d])() = {\n", SIZE);
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for (i=0; i<SIZE; i++)
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if (table[i]==0)
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printf("\tnullproc,\t/* %s */\n", names[i]);
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else
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printf("\t%s,\t/* %s */\n", table[i], names[i]);
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printf("};\n\n");
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printf("uchar *tokname(n)\n"); /* print a tokname() function */
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printf("{\n");
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printf(" static uchar buf[100];\n\n");
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printf(" if (n < FIRSTTOKEN || n > LASTTOKEN) {\n");
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printf(" sprintf(buf, \"token %%d\", n);\n");
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printf(" return buf;\n");
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printf(" }\n");
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printf(" return printname[n-257];\n");
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printf("}\n");
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exit(0);
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}
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