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Annotation of researchv8dc/cmd/awk/maketab.c, revision 1.1.1.1

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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