71 lines
1.2 KiB
C
71 lines
1.2 KiB
C
#include "wscm.h"
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#include <stdio.h>
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#include <inttypes.h>
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void print(O obj);
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static void printcons(O obj) {
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O c = obj;
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I f = 1;
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printf("(");
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while (c != NIL && !IMM(c)) {
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H *h = UNBOX(c);
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if (h->type != OBJ_CONS) {
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printf(" . ");
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print(c);
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printf(")");
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return;
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}
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C *p = (C *)(h + 1);
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if (!f)
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printf(" ");
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f = 0;
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print(p->car);
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c = p->cdr;
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}
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if (c != NIL) {
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printf(" . ");
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print(c);
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}
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printf(")");
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}
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void print(O obj) {
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if (obj == NIL) {
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printf("()");
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} else if (IMM(obj)) {
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printf("%" PRIdPTR, ORD(obj));
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} else {
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void *x = (void *)UNBOX(obj);
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switch (TYPE(obj)) {
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case TAG_SYM: {
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S *s = (S *)((U)x & ~7);
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printf("%.*s", (int)s->len, s->data);
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break;
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}
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case TAG_PRIM: {
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P *p = (P *)((U)x & ~7);
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printf("<#primitive %s>", p->name);
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break;
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}
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default: {
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H *h = (H *)x;
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switch (h->type) {
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case OBJ_CONS:
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printcons(obj);
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break;
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default:
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printf("<#obj type=%" PRIdPTR " @ %p>", h->type, (void *)h);
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break;
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}
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}
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}
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}
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}
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void println(O obj) {
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print(obj);
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putchar('\n');
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}
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