diff options
Diffstat (limited to 'maketab.c')
| -rw-r--r-- | maketab.c | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/maketab.c b/maketab.c new file mode 100644 index 0000000..31acd75 --- /dev/null +++ b/maketab.c @@ -0,0 +1,168 @@ +/**************************************************************** +Copyright (C) Lucent Technologies 1997 +All Rights Reserved + +Permission to use, copy, modify, and distribute this software and +its documentation for any purpose and without fee is hereby +granted, provided that the above copyright notice appear in all +copies and that both that the copyright notice and this +permission notice and warranty disclaimer appear in supporting +documentation, and that the name Lucent Technologies or any of +its entities not be used in advertising or publicity pertaining +to distribution of the software without specific, written prior +permission. + +LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. +IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY +SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES +WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER +IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, +ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF +THIS SOFTWARE. +****************************************************************/ + +/* + * this program makes the table to link function names + * and type indices that is used by execute() in run.c. + * it finds the indices in ytab.h, produced by yacc. + */ + +#include <stdio.h> +#include <string.h> +#include <stdlib.h> +#include "awk.h" +#include "ytab.h" + +struct xx +{ int token; + const char *name; + const char *pname; +} proc[] = { + { PROGRAM, "program", NULL }, + { BOR, "boolop", " || " }, + { AND, "boolop", " && " }, + { NOT, "boolop", " !" }, + { NE, "relop", " != " }, + { EQ, "relop", " == " }, + { LE, "relop", " <= " }, + { LT, "relop", " < " }, + { GE, "relop", " >= " }, + { GT, "relop", " > " }, + { ARRAY, "array", NULL }, + { INDIRECT, "indirect", "$(" }, + { SUBSTR, "substr", "substr" }, + { SUB, "sub", "sub" }, + { GSUB, "gsub", "gsub" }, + { INDEX, "sindex", "sindex" }, + { SPRINTF, "awksprintf", "sprintf " }, + { ADD, "arith", " + " }, + { MINUS, "arith", " - " }, + { MULT, "arith", " * " }, + { DIVIDE, "arith", " / " }, + { MOD, "arith", " % " }, + { UMINUS, "arith", " -" }, + { POWER, "arith", " **" }, + { PREINCR, "incrdecr", "++" }, + { POSTINCR, "incrdecr", "++" }, + { PREDECR, "incrdecr", "--" }, + { POSTDECR, "incrdecr", "--" }, + { CAT, "cat", " " }, + { PASTAT, "pastat", NULL }, + { PASTAT2, "dopa2", NULL }, + { MATCH, "matchop", " ~ " }, + { NOTMATCH, "matchop", " !~ " }, + { MATCHFCN, "matchop", "matchop" }, + { INTEST, "intest", "intest" }, + { PRINTF, "awkprintf", "printf" }, + { PRINT, "printstat", "print" }, + { CLOSE, "closefile", "closefile" }, + { DELETE, "awkdelete", "awkdelete" }, + { SPLIT, "split", "split" }, + { ASSIGN, "assign", " = " }, + { ADDEQ, "assign", " += " }, + { SUBEQ, "assign", " -= " }, + { MULTEQ, "assign", " *= " }, + { DIVEQ, "assign", " /= " }, + { MODEQ, "assign", " %= " }, + { POWEQ, "assign", " ^= " }, + { CONDEXPR, "condexpr", " ?: " }, + { IF, "ifstat", "if(" }, + { WHILE, "whilestat", "while(" }, + { FOR, "forstat", "for(" }, + { DO, "dostat", "do" }, + { IN, "instat", "instat" }, + { NEXT, "jump", "next" }, + { NEXTFILE, "jump", "nextfile" }, + { EXIT, "jump", "exit" }, + { BREAK, "jump", "break" }, + { CONTINUE, "jump", "continue" }, + { RETURN, "jump", "ret" }, + { BLTIN, "bltin", "bltin" }, + { CALL, "call", "call" }, + { ARG, "arg", "arg" }, + { VARNF, "getnf", "NF" }, + { GETLINE, "awkgetline", "getline" }, + { 0, "", "" }, +}; + +#define SIZE (LASTTOKEN - FIRSTTOKEN + 1) +const char *table[SIZE]; +char *names[SIZE]; + +int main(int argc, char *argv[]) +{ + const struct xx *p; + int i, n, tok; + char c; + FILE *fp; + char buf[200], name[200], def[200]; + + printf("#include <stdio.h>\n"); + printf("#include \"awk.h\"\n"); + printf("#include \"ytab.h\"\n\n"); + for (i = SIZE; --i >= 0; ) + names[i] = ""; + + if ((fp = fopen("ytab.h", "r")) == NULL) { + fprintf(stderr, "maketab can't open ytab.h!\n"); + exit(1); + } + printf("static char *printname[%d] = {\n", SIZE); + i = 0; + while (fgets(buf, sizeof buf, fp) != NULL) { + n = sscanf(buf, "%1c %s %s %d", &c, def, name, &tok); + if (c != '#' || (n != 4 && strcmp(def,"define") != 0)) /* not a valid #define */ + continue; + if (tok < FIRSTTOKEN || tok > LASTTOKEN) { + /* fprintf(stderr, "maketab funny token %d %s ignored\n", tok, buf); */ + continue; + } + names[tok-FIRSTTOKEN] = (char *) malloc(strlen(name)+1); + strcpy(names[tok-FIRSTTOKEN], name); + printf("\t(char *) \"%s\",\t/* %d */\n", name, tok); + i++; + } + printf("};\n\n"); + + for (p=proc; p->token!=0; p++) + table[p->token-FIRSTTOKEN] = p->name; + printf("\nCell *(*proctab[%d])(Node **, int) = {\n", SIZE); + for (i=0; i<SIZE; i++) + if (table[i]==0) + printf("\tnullproc,\t/* %s */\n", names[i]); + else + printf("\t%s,\t/* %s */\n", table[i], names[i]); + printf("};\n\n"); + + printf("char *tokname(int n)\n"); /* print a tokname() function */ + printf("{\n"); + printf(" static char buf[100];\n\n"); + printf(" if (n < FIRSTTOKEN || n > LASTTOKEN) {\n"); + printf(" sprintf(buf, \"token %%d\", n);\n"); + printf(" return buf;\n"); + printf(" }\n"); + printf(" return printname[n-FIRSTTOKEN];\n"); + printf("}\n"); + return 0; +} |