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Annotation of 42BSD/ucb/pascal/pdx/sym/print.c, revision 1.1

1.1     ! root        1: /* Copyright (c) 1982 Regents of the University of California */
        !             2: 
        !             3: static char sccsid[] = "@(#)print.c 1.2 1/19/82";
        !             4: 
        !             5: /*
        !             6:  * Routines to print out symbols.
        !             7:  */
        !             8: 
        !             9: #include "defs.h"
        !            10: #include "sym.h"
        !            11: #include "process.h"
        !            12: #include "tree.h"
        !            13: #include "runtime.h"
        !            14: #include "classes.h"
        !            15: #include "sym.rep"
        !            16: #include "process/process.rep"
        !            17: 
        !            18: /*
        !            19:  * Note the entry of the given block, unless it's the main program.
        !            20:  */
        !            21: 
        !            22: printentry(s)
        !            23: SYM *s;
        !            24: {
        !            25:        if (s != program) {
        !            26:                printf("\nentering %s %s\n", classname(s), s->symbol);
        !            27:        }
        !            28: }
        !            29: 
        !            30: /*
        !            31:  * Note the exit of the given block
        !            32:  */
        !            33: 
        !            34: printexit(s)
        !            35: SYM *s;
        !            36: {
        !            37:        if (s != program) {
        !            38:                printf("leaving %s %s\n\n", classname(s), s->symbol);
        !            39:        }
        !            40: }
        !            41: 
        !            42: /*
        !            43:  * Note the call of s from t.
        !            44:  */
        !            45: 
        !            46: printcall(s, t)
        !            47: SYM *s, *t;
        !            48: {
        !            49:        printf("calling %s", s->symbol);
        !            50:        printparams(s, NIL);
        !            51:        printf(" from %s %s\n", classname(t), t->symbol);
        !            52: }
        !            53: 
        !            54: /*
        !            55:  * Note the return from s.  If s is a function, print the value
        !            56:  * it is returning.  This is somewhat painful, since the function
        !            57:  * has actually just returned.
        !            58:  */
        !            59: 
        !            60: printrtn(s)
        !            61: SYM *s;
        !            62: {
        !            63:        register SYM *t;
        !            64:        register int len;
        !            65: 
        !            66:        printf("returning ");
        !            67:        if (s->class == FUNC) {
        !            68:                len = size(s->type);
        !            69:                dread(sp, process->sp, len);
        !            70:                sp += len;
        !            71:                printval(s->type);
        !            72:                putchar(' ');
        !            73:        }
        !            74:        printf("from %s\n", s->symbol);
        !            75: }
        !            76: 
        !            77: /*
        !            78:  * Print the values of the parameters of the given procedure or function.
        !            79:  * The frame distinguishes recursive instances of a procedure.
        !            80:  */
        !            81: 
        !            82: printparams(f, frame)
        !            83: SYM *f;
        !            84: FRAME *frame;
        !            85: {
        !            86:        SYM *param;
        !            87: 
        !            88:        for (param = f->chain; param != NIL; param = param->chain) {
        !            89:                if (param == f->chain) {
        !            90:                        printf("(");
        !            91:                }
        !            92:                printv(param, frame);
        !            93:                if (param->chain != NIL) {
        !            94:                        printf(", ");
        !            95:                } else {
        !            96:                        printf(")");
        !            97:                }
        !            98:        }
        !            99: }
        !           100: 
        !           101: /*
        !           102:  * Print the name and value of a variable.
        !           103:  */
        !           104: 
        !           105: printv(s, frame)
        !           106: SYM *s;
        !           107: FRAME *frame;
        !           108: {
        !           109:        ADDRESS addr;
        !           110:        int len;
        !           111: 
        !           112:        if (s->class == REF) {
        !           113:                dread(&addr, address(s, frame), sizeof(ADDRESS));
        !           114:                len = size(s->type);
        !           115:        } else {
        !           116:                addr = address(s, frame);
        !           117:                len = size(s);
        !           118:        }
        !           119:        printf("%s = ", s->symbol);
        !           120:        if (!rpush(addr, len)) {
        !           121:                printf("*** expression too large ***");
        !           122:        } else {
        !           123:                if (s->class == REF || s->class == VAR) {
        !           124:                        printval(s->type);
        !           125:                } else {
        !           126:                        printval(s);
        !           127:                }
        !           128:        }
        !           129: }
        !           130: 
        !           131: /*
        !           132:  * Print the fully specified variable that is described by the given identifer.
        !           133:  */
        !           134: 
        !           135: printwhich(s)
        !           136: SYM *s;
        !           137: {
        !           138:        printouter(s->func);
        !           139:        printf("%s", s->symbol);
        !           140: }
        !           141: 
        !           142: LOCAL printouter(s)
        !           143: SYM *s;
        !           144: {
        !           145:        if (s->func != NIL) {
        !           146:                printouter(s->func);
        !           147:        }
        !           148:        printf("%s.", s->symbol);
        !           149: }

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