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Annotation of researchv10no/cmd/awk/maketab.c, revision 1.1

1.1     ! root        1: /*
        !             2: Copyright (c) 1989 AT&T
        !             3:        All Rights Reserved
        !             4: 
        !             5: THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T.
        !             6: 
        !             7: The copyright notice above does not evidence any
        !             8: actual or intended publication of such source code.
        !             9: */
        !            10: 
        !            11: #include <stdio.h>
        !            12: #include <string.h>
        !            13: #include <stdlib.h>
        !            14: #include "awk.h"
        !            15: #include "y.tab.h"
        !            16: 
        !            17: struct xx
        !            18: {      int token;
        !            19:        char *name;
        !            20:        char *pname;
        !            21: } proc[] = {
        !            22:        { PROGRAM, "program", NULL },
        !            23:        { BOR, "boolop", " || " },
        !            24:        { AND, "boolop", " && " },
        !            25:        { NOT, "boolop", " !" },
        !            26:        { NE, "relop", " != " },
        !            27:        { EQ, "relop", " == " },
        !            28:        { LE, "relop", " <= " },
        !            29:        { LT, "relop", " < " },
        !            30:        { GE, "relop", " >= " },
        !            31:        { GT, "relop", " > " },
        !            32:        { ARRAY, "array", NULL },
        !            33:        { INDIRECT, "indirect", "$(" },
        !            34:        { SUBSTR, "substr", "substr" },
        !            35:        { SUB, "sub", "sub" },
        !            36:        { GSUB, "gsub", "gsub" },
        !            37:        { INDEX, "sindex", "sindex" },
        !            38:        { SPRINTF, "asprintf", "sprintf " },
        !            39:        { ADD, "arith", " + " },
        !            40:        { MINUS, "arith", " - " },
        !            41:        { MULT, "arith", " * " },
        !            42:        { DIVIDE, "arith", " / " },
        !            43:        { MOD, "arith", " % " },
        !            44:        { UMINUS, "arith", " -" },
        !            45:        { POWER, "arith", " **" },
        !            46:        { PREINCR, "incrdecr", "++" },
        !            47:        { POSTINCR, "incrdecr", "++" },
        !            48:        { PREDECR, "incrdecr", "--" },
        !            49:        { POSTDECR, "incrdecr", "--" },
        !            50:        { CAT, "cat", " " },
        !            51:        { PASTAT, "pastat", NULL },
        !            52:        { PASTAT2, "dopa2", NULL },
        !            53:        { MATCH, "matchop", " ~ " },
        !            54:        { NOTMATCH, "matchop", " !~ " },
        !            55:        { MATCHFCN, "matchop", "matchop" },
        !            56:        { INTEST, "intest", "intest" },
        !            57:        { PRINTF, "aprintf", "printf" },
        !            58:        { PRINT, "printstat", "print" },
        !            59:        { CLOSE, "closefile", "closefile" },
        !            60:        { DELETE, "adelete", "adelete" },
        !            61:        { SPLIT, "split", "split" },
        !            62:        { ASSIGN, "assign", " = " },
        !            63:        { ADDEQ, "assign", " += " },
        !            64:        { SUBEQ, "assign", " -= " },
        !            65:        { MULTEQ, "assign", " *= " },
        !            66:        { DIVEQ, "assign", " /= " },
        !            67:        { MODEQ, "assign", " %= " },
        !            68:        { POWEQ, "assign", " ^= " },
        !            69:        { CONDEXPR, "condexpr", " ?: " },
        !            70:        { IF, "ifstat", "if(" },
        !            71:        { WHILE, "whilestat", "while(" },
        !            72:        { FOR, "forstat", "for(" },
        !            73:        { DO, "dostat", "do" },
        !            74:        { IN, "instat", "instat" },
        !            75:        { NEXT, "jump", "next" },
        !            76:        { EXIT, "jump", "exit" },
        !            77:        { BREAK, "jump", "break" },
        !            78:        { CONTINUE, "jump", "continue" },
        !            79:        { RETURN, "jump", "ret" },
        !            80:        { BLTIN, "bltin", "bltin" },
        !            81:        { CALL, "call", "call" },
        !            82:        { ARG, "arg", "arg" },
        !            83:        { VARNF, "getnf", "NF" },
        !            84:        { GETLINE, "getline", "getline" },
        !            85:        { 0, "", "" },
        !            86: };
        !            87: 
        !            88: #define SIZE   LASTTOKEN - FIRSTTOKEN + 1
        !            89: char *table[SIZE];
        !            90: char *names[SIZE];
        !            91: 
        !            92: main(int argc, char *argv[])
        !            93: {
        !            94:        struct xx *p;
        !            95:        int i, n, tok;
        !            96:        char c;
        !            97:        FILE *fp;
        !            98:        char buf[100], name[100], def[100];
        !            99: 
        !           100:        printf("#include <stdio.h>\n");
        !           101:        printf("#include \"awk.h\"\n");
        !           102:        printf("#include \"y.tab.h\"\n\n");
        !           103:        for (i = SIZE; --i >= 0; )
        !           104:                names[i] = "";
        !           105: 
        !           106:        if ((fp = fopen("y.tab.h", "r")) == NULL) {
        !           107:                fprintf(stderr, "maketab can't open y.tab.h!\n");
        !           108:                exit(1);
        !           109:        }
        !           110:        printf("static uchar *printname[%d] = {\n", SIZE);
        !           111:        i = 0;
        !           112:        while (fgets(buf, sizeof buf, fp) != NULL) {
        !           113:                n = sscanf(buf, "%1c %s %s %d", &c, def, name, &tok);
        !           114:                if (c != '#' || n != 4 && strcmp(def,"define") != 0)    /* not a valid #define */
        !           115:                        continue;
        !           116:                if (tok < FIRSTTOKEN || tok > LASTTOKEN) {
        !           117:                        fprintf(stderr, "maketab funny token %d %s\n", tok, buf);
        !           118:                        exit(1);
        !           119:                }
        !           120:                names[tok-FIRSTTOKEN] = (char *) malloc(strlen(name)+1);
        !           121:                strcpy(names[tok-FIRSTTOKEN], name);
        !           122:                printf("\t(uchar *) \"%s\",\t/* %d */\n", name, tok);
        !           123:                i++;
        !           124:        }
        !           125:        printf("};\n\n");
        !           126: 
        !           127:        for (p=proc; p->token!=0; p++)
        !           128:                table[p->token-FIRSTTOKEN] = p->name;
        !           129:        printf("\nCell *(*proctab[%d])(Node **, int) = {\n", SIZE);
        !           130:        for (i=0; i<SIZE; i++)
        !           131:                if (table[i]==0)
        !           132:                        printf("\tnullproc,\t/* %s */\n", names[i]);
        !           133:                else
        !           134:                        printf("\t%s,\t/* %s */\n", table[i], names[i]);
        !           135:        printf("};\n\n");
        !           136: 
        !           137:        printf("uchar *tokname(int n)\n");      /* print a tokname() function */
        !           138:        printf("{\n");
        !           139:        printf("        static uchar buf[100];\n\n");
        !           140:        printf("        if (n < FIRSTTOKEN || n > LASTTOKEN) {\n");
        !           141:        printf("                sprintf(buf, \"token %%d\", n);\n");
        !           142:        printf("                return buf;\n");
        !           143:        printf("        }\n");
        !           144:        printf("        return printname[n-FIRSTTOKEN];\n");
        !           145:        printf("}\n");
        !           146:        return 0;
        !           147: }

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