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Annotation of researchv8dc/cmd/awk/maketab.c, revision 1.1

1.1     ! root        1: #include <stdio.h>
        !             2: #include "y.tab.h"
        !             3: 
        !             4: struct xx
        !             5: {      int token;
        !             6:        char *name;
        !             7:        char *pname;
        !             8: } proc[] = {
        !             9:        { PROGRAM, "program", NULL },
        !            10:        { BOR, "boolop", " || " },
        !            11:        { AND, "boolop", " && " },
        !            12:        { NOT, "boolop", " !" },
        !            13:        { NE, "relop", " != " },
        !            14:        { EQ, "relop", " == " },
        !            15:        { LE, "relop", " <= " },
        !            16:        { LT, "relop", " < " },
        !            17:        { GE, "relop", " >= " },
        !            18:        { GT, "relop", " > " },
        !            19:        { ARRAY, "array", NULL },
        !            20:        { INDIRECT, "indirect", "$(" },
        !            21:        { SUBSTR, "substr", "substr" },
        !            22:        { SUB, "sub", "sub" },
        !            23:        { GSUB, "gsub", "gsub" },
        !            24:        { INDEX, "sindex", "sindex" },
        !            25:        { SPRINTF, "asprintf", "sprintf " },
        !            26:        { ADD, "arith", " + " },
        !            27:        { MINUS, "arith", " - " },
        !            28:        { MULT, "arith", " * " },
        !            29:        { DIVIDE, "arith", " / " },
        !            30:        { MOD, "arith", " % " },
        !            31:        { UMINUS, "arith", " -" },
        !            32:        { POWER, "arith", " **" },
        !            33:        { PREINCR, "incrdecr", "++" },
        !            34:        { POSTINCR, "incrdecr", "++" },
        !            35:        { PREDECR, "incrdecr", "--" },
        !            36:        { POSTDECR, "incrdecr", "--" },
        !            37:        { CAT, "cat", " " },
        !            38:        { PASTAT, "pastat", NULL },
        !            39:        { PASTAT2, "dopa2", NULL },
        !            40:        { MATCH, "matchop", " ~ " },
        !            41:        { NOTMATCH, "matchop", " !~ " },
        !            42:        { INTEST, "intest", "intest" },
        !            43:        { PRINTF, "aprintf", "printf" },
        !            44:        { PRINT, "print", "print" },
        !            45:        { CLOSE, "closefile", "closefile" },
        !            46:        { DELETE, "delete", "delete" },
        !            47:        { SPLIT, "split", "split" },
        !            48:        { ASSIGN, "assign", " = " },
        !            49:        { ADDEQ, "assign", " += " },
        !            50:        { SUBEQ, "assign", " -= " },
        !            51:        { MULTEQ, "assign", " *= " },
        !            52:        { DIVEQ, "assign", " /= " },
        !            53:        { MODEQ, "assign", " %= " },
        !            54:        { POWEQ, "assign", " ^= " },
        !            55:        { IF, "ifstat", "if(" },
        !            56:        { WHILE, "whilestat", "while(" },
        !            57:        { FOR, "forstat", "for(" },
        !            58:        { IN, "instat", "instat" },
        !            59:        { NEXT, "jump", "next" },
        !            60:        { EXIT, "jump", "exit" },
        !            61:        { BREAK, "jump", "break" },
        !            62:        { CONTINUE, "jump", "continue" },
        !            63:        { RETURN, "jump", "ret" },
        !            64:        { BLTIN, "bltin", "bltin" },
        !            65:        { CALL, "call", "call" },
        !            66:        { ARG, "arg", "arg" },
        !            67:        { VARNF, "getnf", "NF" },
        !            68:        { GETLINE, "getline", "getline" },
        !            69:        { 0, "", "" },
        !            70: };
        !            71: 
        !            72: #define SIZE   LASTTOKEN - FIRSTTOKEN + 1
        !            73: char *table[SIZE];
        !            74: char *names[SIZE];
        !            75: 
        !            76: main()
        !            77: {
        !            78:        struct xx *p;
        !            79:        int i, c, tok;
        !            80:        FILE *fp;
        !            81:        char buf[100], name[100], def[100];
        !            82: 
        !            83:        printf("#include \"awk.h\"\n");
        !            84:        printf("#include \"y.tab.h\"\n\n");
        !            85:        printf("Cell *nullproc();\n");
        !            86:        for (i = SIZE; --i >= 0; )
        !            87:                names[i] = "";
        !            88:        for (p=proc; p->token!=0; p++)
        !            89:                if (p == proc || strcmp(p->name, (p-1)->name))
        !            90:                        printf("extern Cell *%s();\n", p->name);
        !            91: 
        !            92:        if ((fp = fopen("y.tab.h", "r")) == NULL) {
        !            93:                fprintf(stderr, "maketab can't open y.tab.h!\n");
        !            94:                exit(1);
        !            95:        }
        !            96:        printf("static char *printname[%d] = {\n", SIZE);
        !            97:        i = 0;
        !            98:        while (fgets(buf, sizeof buf, fp) != NULL) {
        !            99:                sscanf(buf, "%1c %s %s %d", &c, def, name, &tok);
        !           100:                if (tok < FIRSTTOKEN || tok > LASTTOKEN) {
        !           101:                        fprintf(stderr, "maketab funny token %d %s\n", tok, buf);
        !           102:                        exit(1);
        !           103:                }
        !           104:                names[tok-FIRSTTOKEN] = (char *) malloc(strlen(name)+1);
        !           105:                strcpy(names[tok-FIRSTTOKEN], name);
        !           106:                printf("\t\"%s\",\t/* %d */\n", name, tok);
        !           107:                i++;
        !           108:        }
        !           109:        printf("};\n\n");
        !           110: 
        !           111:        for (p=proc; p->token!=0; p++)
        !           112:                table[p->token-FIRSTTOKEN] = p->name;
        !           113:        printf("\nCell *(*proctab[%d])() = {\n", SIZE);
        !           114:        for (i=0; i<SIZE; i++)
        !           115:                if (table[i]==0)
        !           116:                        printf("\tnullproc,\t/* %s */\n", names[i]);
        !           117:                else
        !           118:                        printf("\t%s,\t/* %s */\n", table[i], names[i]);
        !           119:        printf("};\n\n");
        !           120: 
        !           121:        printf("char *tokname(n)\n");   /* print a tokname() function */
        !           122:        printf("{\n");
        !           123:        printf("        static char buf[100];\n\n");
        !           124:        printf("        if (n < FIRSTTOKEN || n > LASTTOKEN) {\n");
        !           125:        printf("                sprintf(buf, \"unknown token %%d\", n);\n");
        !           126:        printf("                return buf;\n");
        !           127:        printf("        }\n");
        !           128:        printf("        return printname[n-256];\n");
        !           129:        printf("}\n");
        !           130:        exit(0);
        !           131: }

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