コード例 #1
0
ファイル: duk_api_call.c プロジェクト: GarethNelson/duktape
DUK_EXTERNAL duk_int_t duk_get_current_magic(duk_context *ctx) {
	duk_hthread *thr = (duk_hthread *) ctx;
	duk_activation *act;
	duk_hobject *func;

	DUK_ASSERT_CTX_VALID(ctx);
	DUK_ASSERT(thr != NULL);
	DUK_ASSERT_DISABLE(thr->callstack_top >= 0);

	act = duk_hthread_get_current_activation(thr);
	if (act) {
		func = DUK_ACT_GET_FUNC(act);
		if (!func) {
			duk_tval *tv = &act->tv_func;
			duk_small_uint_t lf_flags;
			lf_flags = DUK_TVAL_GET_LIGHTFUNC_FLAGS(tv);
			return (duk_int_t) DUK_LFUNC_FLAGS_GET_MAGIC(lf_flags);
		}
		DUK_ASSERT(func != NULL);

		if (DUK_HOBJECT_IS_NATFUNC(func)) {
			duk_hnatfunc *nf = (duk_hnatfunc *) func;
			return (duk_int_t) nf->magic;
		}
	}
	return 0;
}
コード例 #2
0
ファイル: duk_heap_alloc.c プロジェクト: oleavr/duktape
DUK_INTERNAL void duk_free_hobject_inner(duk_heap *heap, duk_hobject *h) {
	DUK_ASSERT(heap != NULL);
	DUK_ASSERT(h != NULL);

	DUK_FREE(heap, DUK_HOBJECT_GET_PROPS(heap, h));

	if (DUK_HOBJECT_IS_COMPFUNC(h)) {
		duk_hcompfunc *f = (duk_hcompfunc *) h;
		DUK_UNREF(f);
		/* Currently nothing to free; 'data' is a heap object */
	} else if (DUK_HOBJECT_IS_NATFUNC(h)) {
		duk_hnatfunc *f = (duk_hnatfunc *) h;
		DUK_UNREF(f);
		/* Currently nothing to free */
	} else if (DUK_HOBJECT_IS_THREAD(h)) {
		duk_hthread *t = (duk_hthread *) h;
		DUK_FREE(heap, t->valstack);
		DUK_FREE(heap, t->callstack);
		DUK_FREE(heap, t->catchstack);
		/* Don't free h->resumer because it exists in the heap.
		 * Callstack entries also contain function pointers which
		 * are not freed for the same reason.
		 */

		/* XXX: with 'caller' property the callstack would need
		 * to be unwound to update the 'caller' properties of
		 * functions in the callstack.
		 */
	}
}
コード例 #3
0
DUK_LOCAL void duk__mark_hobject(duk_heap *heap, duk_hobject *h) {
	duk_uint_fast32_t i;

	DUK_DDD(DUK_DDDPRINT("duk__mark_hobject: %p", (void *) h));

	DUK_ASSERT(h);

	/* XXX: use advancing pointers instead of index macros -> faster and smaller? */

	for (i = 0; i < (duk_uint_fast32_t) DUK_HOBJECT_GET_ENEXT(h); i++) {
		duk_hstring *key = DUK_HOBJECT_E_GET_KEY(heap, h, i);
		if (!key) {
			continue;
		}
		duk__mark_heaphdr(heap, (duk_heaphdr *) key);
		if (DUK_HOBJECT_E_SLOT_IS_ACCESSOR(heap, h, i)) {
			duk__mark_heaphdr(heap, (duk_heaphdr *) DUK_HOBJECT_E_GET_VALUE_PTR(heap, h, i)->a.get);
			duk__mark_heaphdr(heap, (duk_heaphdr *) DUK_HOBJECT_E_GET_VALUE_PTR(heap, h, i)->a.set);
		} else {
			duk__mark_tval(heap, &DUK_HOBJECT_E_GET_VALUE_PTR(heap, h, i)->v);
		}
	}

	for (i = 0; i < (duk_uint_fast32_t) DUK_HOBJECT_GET_ASIZE(h); i++) {
		duk__mark_tval(heap, DUK_HOBJECT_A_GET_VALUE_PTR(heap, h, i));
	}

	/* hash part is a 'weak reference' and does not contribute */

	duk__mark_heaphdr(heap, (duk_heaphdr *) DUK_HOBJECT_GET_PROTOTYPE(heap, h));

	/* XXX: rearrange bits to allow a switch case to be used here? */
	/* XXX: add a fast path for objects (and arrays)? */
	/* DUK_HOBJECT_IS_ARRAY(h): needs no special handling now as there are
	 * no extra fields in need of marking.
	 */
	if (DUK_HOBJECT_IS_COMPFUNC(h)) {
		duk_hcompfunc *f = (duk_hcompfunc *) h;
		duk_tval *tv, *tv_end;
		duk_hobject **fn, **fn_end;

		/* 'data' is reachable through every compiled function which
		 * contains a reference.
		 */

		duk__mark_heaphdr(heap, (duk_heaphdr *) DUK_HCOMPFUNC_GET_DATA(heap, f));
		duk__mark_heaphdr(heap, (duk_heaphdr *) DUK_HCOMPFUNC_GET_LEXENV(heap, f));
		duk__mark_heaphdr(heap, (duk_heaphdr *) DUK_HCOMPFUNC_GET_VARENV(heap, f));

		if (DUK_HCOMPFUNC_GET_DATA(heap, f) != NULL) {
			tv = DUK_HCOMPFUNC_GET_CONSTS_BASE(heap, f);
			tv_end = DUK_HCOMPFUNC_GET_CONSTS_END(heap, f);
			while (tv < tv_end) {
				duk__mark_tval(heap, tv);
				tv++;
			}

			fn = DUK_HCOMPFUNC_GET_FUNCS_BASE(heap, f);
			fn_end = DUK_HCOMPFUNC_GET_FUNCS_END(heap, f);
			while (fn < fn_end) {
				duk__mark_heaphdr(heap, (duk_heaphdr *) *fn);
				fn++;
			}
		} else {
			/* May happen in some out-of-memory corner cases. */
			DUK_D(DUK_DPRINT("duk_hcompfunc 'data' is NULL, skipping marking"));
		}
	} else if (DUK_HOBJECT_IS_NATFUNC(h)) {
		duk_hnatfunc *f = (duk_hnatfunc *) h;
		DUK_UNREF(f);
		/* nothing to mark */
#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
	} else if (DUK_HOBJECT_IS_BUFOBJ(h)) {
		duk_hbufobj *b = (duk_hbufobj *) h;
		duk__mark_heaphdr(heap, (duk_heaphdr *) b->buf);
		duk__mark_heaphdr(heap, (duk_heaphdr *) b->buf_prop);
#endif  /* DUK_USE_BUFFEROBJECT_SUPPORT */
	} else if (DUK_HOBJECT_IS_THREAD(h)) {
		duk_hthread *t = (duk_hthread *) h;
		duk_tval *tv;

		tv = t->valstack;
		while (tv < t->valstack_top) {
			duk__mark_tval(heap, tv);
			tv++;
		}

		for (i = 0; i < (duk_uint_fast32_t) t->callstack_top; i++) {
			duk_activation *act = t->callstack + i;
			duk__mark_heaphdr(heap, (duk_heaphdr *) DUK_ACT_GET_FUNC(act));
			duk__mark_heaphdr(heap, (duk_heaphdr *) act->var_env);
			duk__mark_heaphdr(heap, (duk_heaphdr *) act->lex_env);
#if defined(DUK_USE_NONSTD_FUNC_CALLER_PROPERTY)
			duk__mark_heaphdr(heap, (duk_heaphdr *) act->prev_caller);
#endif
		}

#if 0  /* nothing now */
		for (i = 0; i < (duk_uint_fast32_t) t->catchstack_top; i++) {
			duk_catcher *cat = t->catchstack + i;
		}
#endif

		duk__mark_heaphdr(heap, (duk_heaphdr *) t->resumer);

		/* XXX: duk_small_uint_t would be enough for this loop */
		for (i = 0; i < DUK_NUM_BUILTINS; i++) {
			duk__mark_heaphdr(heap, (duk_heaphdr *) t->builtins[i]);
		}
	}
}
コード例 #4
0
DUK_LOCAL void duk__print_hobject(duk__dprint_state *st, duk_hobject *h) {
	duk_fixedbuffer *fb = st->fb;
	duk_uint_fast32_t i;
	duk_tval *tv;
	duk_hstring *key;
	duk_bool_t first = 1;
	const char *brace1 = "{";
	const char *brace2 = "}";
	duk_bool_t pushed_loopstack = 0;

	if (duk_fb_is_full(fb)) {
		return;
	}

	duk__print_shared_heaphdr(st, &h->hdr);

	if (h && DUK_HOBJECT_HAS_ARRAY_PART(h)) {
		brace1 = "[";
		brace2 = "]";
	}

	if (!h) {
		duk_fb_put_cstring(fb, "NULL");
		goto finished;
	}

	if (st->depth >= st->depth_limit) {
		const char *subtype = "generic";

		if (DUK_HOBJECT_IS_COMPFUNC(h)) {
			subtype = "compfunc";
		} else if (DUK_HOBJECT_IS_NATFUNC(h)) {
			subtype = "natfunc";
		} else if (DUK_HOBJECT_IS_THREAD(h)) {
			subtype = "thread";
		} else if (DUK_HOBJECT_IS_BUFOBJ(h)) {
			subtype = "bufobj";
		} else if (DUK_HOBJECT_IS_ARRAY(h)) {
			subtype = "array";
		}
		duk_fb_sprintf(fb, "%sobject/%s %p%s", (const char *) brace1, subtype, (void *) h, (const char *) brace2);
		return;
	}

	for (i = 0; i < (duk_uint_fast32_t) st->loop_stack_index; i++) {
		if (st->loop_stack[i] == h) {
			duk_fb_sprintf(fb, "%sLOOP:%p%s", (const char *) brace1, (void *) h, (const char *) brace2);
			return;
		}
	}

	/* after this, return paths should 'goto finished' for decrement */
	st->depth++;

	if (st->loop_stack_index >= st->loop_stack_limit) {
		duk_fb_sprintf(fb, "%sOUT-OF-LOOP-STACK%s", (const char *) brace1, (const char *) brace2);
		goto finished;
	}
	st->loop_stack[st->loop_stack_index++] = h;
	pushed_loopstack = 1;

	/*
	 *  Notation: double underscore used for internal properties which are not
	 *  stored in the property allocation (e.g. '__valstack').
	 */

	duk_fb_put_cstring(fb, brace1);

	if (DUK_HOBJECT_GET_PROPS(NULL, h)) {
		duk_uint32_t a_limit;

		a_limit = DUK_HOBJECT_GET_ASIZE(h);
		if (st->internal) {
			/* dump all allocated entries, unused entries print as 'unused',
			 * note that these may extend beyond current 'length' and look
			 * a bit funny.
			 */
		} else {
			/* leave out trailing 'unused' elements */
			while (a_limit > 0) {
				tv = DUK_HOBJECT_A_GET_VALUE_PTR(NULL, h, a_limit - 1);
				if (!DUK_TVAL_IS_UNUSED(tv)) {
					break;
				}
				a_limit--;
			}
		}

		for (i = 0; i < a_limit; i++) {
			tv = DUK_HOBJECT_A_GET_VALUE_PTR(NULL, h, i);
			DUK__COMMA();
			duk__print_tval(st, tv);
		}
		for (i = 0; i < DUK_HOBJECT_GET_ENEXT(h); i++) {
			key = DUK_HOBJECT_E_GET_KEY(NULL, h, i);
			if (!key) {
				continue;
			}
			if (!st->internal && DUK_HSTRING_HAS_HIDDEN(key)) {
				continue;
			}
			DUK__COMMA();
			duk__print_hstring(st, key, 0);
			duk_fb_put_byte(fb, (duk_uint8_t) DUK_ASC_COLON);
			if (DUK_HOBJECT_E_SLOT_IS_ACCESSOR(NULL, h, i)) {
				duk_fb_sprintf(fb, "[get:%p,set:%p]",
				               (void *) DUK_HOBJECT_E_GET_VALUE(NULL, h, i).a.get,
				               (void *) DUK_HOBJECT_E_GET_VALUE(NULL, h, i).a.set);
			} else {
				tv = &DUK_HOBJECT_E_GET_VALUE(NULL, h, i).v;
				duk__print_tval(st, tv);
			}
			if (st->heavy) {
				duk_fb_sprintf(fb, "<%02lx>", (unsigned long) DUK_HOBJECT_E_GET_FLAGS(NULL, h, i));
			}
		}
	}
	if (st->internal) {
		if (DUK_HOBJECT_HAS_EXTENSIBLE(h)) {
			DUK__COMMA(); duk_fb_sprintf(fb, "__extensible:true");
		}
		if (DUK_HOBJECT_HAS_CONSTRUCTABLE(h)) {
			DUK__COMMA(); duk_fb_sprintf(fb, "__constructable:true");
		}
		if (DUK_HOBJECT_HAS_BOUNDFUNC(h)) {
			DUK__COMMA(); duk_fb_sprintf(fb, "__boundfunc:true");
		}
		if (DUK_HOBJECT_HAS_COMPFUNC(h)) {
			DUK__COMMA(); duk_fb_sprintf(fb, "__compfunc:true");
		}
		if (DUK_HOBJECT_HAS_NATFUNC(h)) {
			DUK__COMMA(); duk_fb_sprintf(fb, "__natfunc:true");
		}
		if (DUK_HOBJECT_HAS_BUFOBJ(h)) {
			DUK__COMMA(); duk_fb_sprintf(fb, "__bufobj:true");
		}
		if (DUK_HOBJECT_HAS_THREAD(h)) {
			DUK__COMMA(); duk_fb_sprintf(fb, "__thread:true");
		}
		if (DUK_HOBJECT_HAS_ARRAY_PART(h)) {
			DUK__COMMA(); duk_fb_sprintf(fb, "__array_part:true");
		}
		if (DUK_HOBJECT_HAS_STRICT(h)) {
			DUK__COMMA(); duk_fb_sprintf(fb, "__strict:true");
		}
		if (DUK_HOBJECT_HAS_NOTAIL(h)) {
			DUK__COMMA(); duk_fb_sprintf(fb, "__notail:true");
		}
		if (DUK_HOBJECT_HAS_NEWENV(h)) {
			DUK__COMMA(); duk_fb_sprintf(fb, "__newenv:true");
		}
		if (DUK_HOBJECT_HAS_NAMEBINDING(h)) {
			DUK__COMMA(); duk_fb_sprintf(fb, "__namebinding:true");
		}
		if (DUK_HOBJECT_HAS_CREATEARGS(h)) {
			DUK__COMMA(); duk_fb_sprintf(fb, "__createargs:true");
		}
		if (DUK_HOBJECT_HAS_ENVRECCLOSED(h)) {
			DUK__COMMA(); duk_fb_sprintf(fb, "__envrecclosed:true");
		}
		if (DUK_HOBJECT_HAS_EXOTIC_ARRAY(h)) {
			DUK__COMMA(); duk_fb_sprintf(fb, "__exotic_array:true");
		}
		if (DUK_HOBJECT_HAS_EXOTIC_STRINGOBJ(h)) {
			DUK__COMMA(); duk_fb_sprintf(fb, "__exotic_stringobj:true");
		}
		if (DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(h)) {
			DUK__COMMA(); duk_fb_sprintf(fb, "__exotic_arguments:true");
		}
		if (DUK_HOBJECT_HAS_EXOTIC_DUKFUNC(h)) {
			DUK__COMMA(); duk_fb_sprintf(fb, "__exotic_dukfunc:true");
		}
		if (DUK_HOBJECT_IS_BUFOBJ(h)) {
			DUK__COMMA(); duk_fb_sprintf(fb, "__exotic_bufobj:true");
		}
		if (DUK_HOBJECT_HAS_EXOTIC_PROXYOBJ(h)) {
			DUK__COMMA(); duk_fb_sprintf(fb, "__exotic_proxyobj:true");
		}
	}

	if (st->internal && DUK_HOBJECT_IS_ARRAY(h)) {
		duk_harray *a = (duk_harray *) h;
		DUK__COMMA(); duk_fb_sprintf(fb, "__length:%ld", (long) a->length);
		DUK__COMMA(); duk_fb_sprintf(fb, "__length_nonwritable:%ld", (long) a->length_nonwritable);
	} else if (st->internal && DUK_HOBJECT_IS_COMPFUNC(h)) {
		duk_hcompfunc *f = (duk_hcompfunc *) h;
		DUK__COMMA(); duk_fb_put_cstring(fb, "__data:");
		duk__print_hbuffer(st, (duk_hbuffer *) DUK_HCOMPFUNC_GET_DATA(NULL, f));
		DUK__COMMA(); duk_fb_put_cstring(fb, "__lexenv:"); duk__print_hobject(st, DUK_HCOMPFUNC_GET_LEXENV(NULL, f));
		DUK__COMMA(); duk_fb_put_cstring(fb, "__varenv:"); duk__print_hobject(st, DUK_HCOMPFUNC_GET_VARENV(NULL, f));
		DUK__COMMA(); duk_fb_sprintf(fb, "__nregs:%ld", (long) f->nregs);
		DUK__COMMA(); duk_fb_sprintf(fb, "__nargs:%ld", (long) f->nargs);
#if defined(DUK_USE_DEBUGGER_SUPPORT)
		DUK__COMMA(); duk_fb_sprintf(fb, "__start_line:%ld", (long) f->start_line);
		DUK__COMMA(); duk_fb_sprintf(fb, "__end_line:%ld", (long) f->end_line);
#endif
		DUK__COMMA(); duk_fb_put_cstring(fb, "__data:");
		duk__print_hbuffer(st, (duk_hbuffer *) DUK_HCOMPFUNC_GET_DATA(NULL, f));
	} else if (st->internal && DUK_HOBJECT_IS_NATFUNC(h)) {
		duk_hnatfunc *f = (duk_hnatfunc *) h;
		DUK__COMMA(); duk_fb_sprintf(fb, "__func:");
		duk_fb_put_funcptr(fb, (duk_uint8_t *) &f->func, sizeof(f->func));
		DUK__COMMA(); duk_fb_sprintf(fb, "__nargs:%ld", (long) f->nargs);
		DUK__COMMA(); duk_fb_sprintf(fb, "__magic:%ld", (long) f->magic);
#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
	} else if (st->internal && DUK_HOBJECT_IS_BUFOBJ(h)) {
		duk_hbufobj *b = (duk_hbufobj *) h;
		DUK__COMMA(); duk_fb_sprintf(fb, "__buf:");
		duk__print_hbuffer(st, (duk_hbuffer *) b->buf);
		DUK__COMMA(); duk_fb_sprintf(fb, "__buf_prop:");
		duk__print_hobject(st, (duk_hobject *) b->buf_prop);
		DUK__COMMA(); duk_fb_sprintf(fb, "__offset:%ld", (long) b->offset);
		DUK__COMMA(); duk_fb_sprintf(fb, "__length:%ld", (long) b->length);
		DUK__COMMA(); duk_fb_sprintf(fb, "__shift:%ld", (long) b->shift);
		DUK__COMMA(); duk_fb_sprintf(fb, "__elemtype:%ld", (long) b->elem_type);
#endif
	} else if (st->internal && DUK_HOBJECT_IS_THREAD(h)) {
		duk_hthread *t = (duk_hthread *) h;
		DUK__COMMA(); duk_fb_sprintf(fb, "__strict:%ld", (long) t->strict);
		DUK__COMMA(); duk_fb_sprintf(fb, "__state:%ld", (long) t->state);
		DUK__COMMA(); duk_fb_sprintf(fb, "__unused1:%ld", (long) t->unused1);
		DUK__COMMA(); duk_fb_sprintf(fb, "__unused2:%ld", (long) t->unused2);
		DUK__COMMA(); duk_fb_sprintf(fb, "__valstack_max:%ld", (long) t->valstack_max);
		DUK__COMMA(); duk_fb_sprintf(fb, "__callstack_max:%ld", (long) t->callstack_max);
		DUK__COMMA(); duk_fb_sprintf(fb, "__catchstack_max:%ld", (long) t->catchstack_max);
		DUK__COMMA(); duk_fb_sprintf(fb, "__valstack:%p", (void *) t->valstack);
		DUK__COMMA(); duk_fb_sprintf(fb, "__valstack_end:%p/%ld", (void *) t->valstack_end, (long) (t->valstack_end - t->valstack));
		DUK__COMMA(); duk_fb_sprintf(fb, "__valstack_bottom:%p/%ld", (void *) t->valstack_bottom, (long) (t->valstack_bottom - t->valstack));
		DUK__COMMA(); duk_fb_sprintf(fb, "__valstack_top:%p/%ld", (void *) t->valstack_top, (long) (t->valstack_top - t->valstack));
		DUK__COMMA(); duk_fb_sprintf(fb, "__catchstack:%p", (void *) t->catchstack);
		DUK__COMMA(); duk_fb_sprintf(fb, "__catchstack_size:%ld", (long) t->catchstack_size);
		DUK__COMMA(); duk_fb_sprintf(fb, "__catchstack_top:%ld", (long) t->catchstack_top);
		DUK__COMMA(); duk_fb_sprintf(fb, "__resumer:"); duk__print_hobject(st, (duk_hobject *) t->resumer);
		/* XXX: print built-ins array? */

	}
#if defined(DUK_USE_REFERENCE_COUNTING)
	if (st->internal) {
		DUK__COMMA(); duk_fb_sprintf(fb, "__refcount:%lu", (unsigned long) DUK_HEAPHDR_GET_REFCOUNT((duk_heaphdr *) h));
	}
#endif
	if (st->internal) {
		DUK__COMMA(); duk_fb_sprintf(fb, "__class:%ld", (long) DUK_HOBJECT_GET_CLASS_NUMBER(h));
	}

	DUK__COMMA(); duk_fb_sprintf(fb, "__heapptr:%p", (void *) h);  /* own pointer */

	/* prototype should be last, for readability */
	if (DUK_HOBJECT_GET_PROTOTYPE(NULL, h)) {
		if (st->follow_proto) {
			DUK__COMMA(); duk_fb_put_cstring(fb, "__prototype:"); duk__print_hobject(st, DUK_HOBJECT_GET_PROTOTYPE(NULL, h));
		} else {
			DUK__COMMA(); duk_fb_sprintf(fb, "__prototype:%p", (void *) DUK_HOBJECT_GET_PROTOTYPE(NULL, h));
		}
	}

	duk_fb_put_cstring(fb, brace2);

#if defined(DUK_USE_HOBJECT_HASH_PART)
	if (st->heavy && DUK_HOBJECT_GET_HSIZE(h) > 0) {
		duk_fb_put_byte(fb, (duk_uint8_t) DUK_ASC_LANGLE);
		for (i = 0; i < DUK_HOBJECT_GET_HSIZE(h); i++) {
			duk_uint_t h_idx = DUK_HOBJECT_H_GET_INDEX(NULL, h, i);
			if (i > 0) {
				duk_fb_put_byte(fb, (duk_uint8_t) DUK_ASC_COMMA);
			}
			if (h_idx == DUK_HOBJECT_HASHIDX_UNUSED) {
				duk_fb_sprintf(fb, "u");
			} else if (h_idx == DUK_HOBJECT_HASHIDX_DELETED) {
				duk_fb_sprintf(fb, "d");
			} else {
				duk_fb_sprintf(fb, "%ld", (long) h_idx);
			}
		}
		duk_fb_put_byte(fb, (duk_uint8_t) DUK_ASC_RANGLE);
	}
#endif

 finished:
	st->depth--;
	if (pushed_loopstack) {
		st->loop_stack_index--;
		st->loop_stack[st->loop_stack_index] = NULL;
	}
}
コード例 #5
0
DUK_LOCAL void duk__refcount_finalize_hobject(duk_hthread *thr, duk_hobject *h) {
	duk_uint_fast32_t i;

	DUK_ASSERT(h);
	DUK_ASSERT(DUK_HEAPHDR_GET_TYPE((duk_heaphdr *) h) == DUK_HTYPE_OBJECT);

	/* XXX: better to get base and walk forwards? */

	for (i = 0; i < (duk_uint_fast32_t) DUK_HOBJECT_GET_ENEXT(h); i++) {
		duk_hstring *key = DUK_HOBJECT_E_GET_KEY(thr->heap, h, i);
		if (!key) {
			continue;
		}
		duk_heaphdr_decref(thr, (duk_heaphdr *) key);
		if (DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, h, i)) {
			duk_heaphdr_decref_allownull(thr, (duk_heaphdr *) DUK_HOBJECT_E_GET_VALUE_GETTER(thr->heap, h, i));
			duk_heaphdr_decref_allownull(thr, (duk_heaphdr *) DUK_HOBJECT_E_GET_VALUE_SETTER(thr->heap, h, i));
		} else {
			duk_tval_decref(thr, DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, h, i));
		}
	}

	for (i = 0; i < (duk_uint_fast32_t) DUK_HOBJECT_GET_ASIZE(h); i++) {
		duk_tval_decref(thr, DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, h, i));
	}

	/* hash part is a 'weak reference' and does not contribute */

	duk_heaphdr_decref_allownull(thr, (duk_heaphdr *) DUK_HOBJECT_GET_PROTOTYPE(thr->heap, h));

	/* XXX: rearrange bits to allow a switch case to be used here? */
	/* XXX: add a fast path for objects (and arrays)? */

	/* DUK_HOBJECT_IS_ARRAY(h): needs no special handling now as there are
	 * no extra fields in need of decref.
	 */
	if (DUK_HOBJECT_IS_COMPFUNC(h)) {
		duk_hcompfunc *f = (duk_hcompfunc *) h;
		duk_tval *tv, *tv_end;
		duk_hobject **funcs, **funcs_end;

		DUK_ASSERT(DUK_HCOMPFUNC_GET_DATA(thr->heap, f) != NULL);  /* compiled functions must be created 'atomically' */

		tv = DUK_HCOMPFUNC_GET_CONSTS_BASE(thr->heap, f);
		tv_end = DUK_HCOMPFUNC_GET_CONSTS_END(thr->heap, f);
		while (tv < tv_end) {
			duk_tval_decref(thr, tv);
			tv++;
		}

		funcs = DUK_HCOMPFUNC_GET_FUNCS_BASE(thr->heap, f);
		funcs_end = DUK_HCOMPFUNC_GET_FUNCS_END(thr->heap, f);
		while (funcs < funcs_end) {
			duk_heaphdr_decref(thr, (duk_heaphdr *) *funcs);
			funcs++;
		}

		duk_heaphdr_decref(thr, (duk_heaphdr *) DUK_HCOMPFUNC_GET_DATA(thr->heap, f));
	} else if (DUK_HOBJECT_IS_NATFUNC(h)) {
		duk_hnatfunc *f = (duk_hnatfunc *) h;
		DUK_UNREF(f);
		/* nothing to finalize */
	} else if (DUK_HOBJECT_IS_BUFOBJ(h)) {
		duk_hbufobj *b = (duk_hbufobj *) h;
		if (b->buf) {
			duk_heaphdr_decref(thr, (duk_heaphdr *) b->buf);
		}
	} else if (DUK_HOBJECT_IS_THREAD(h)) {
		duk_hthread *t = (duk_hthread *) h;
		duk_tval *tv;

		tv = t->valstack;
		while (tv < t->valstack_top) {
			duk_tval_decref(thr, tv);
			tv++;
		}

		for (i = 0; i < (duk_uint_fast32_t) t->callstack_top; i++) {
			duk_activation *act = t->callstack + i;
			duk_heaphdr_decref_allownull(thr, (duk_heaphdr *) DUK_ACT_GET_FUNC(act));
			duk_heaphdr_decref_allownull(thr, (duk_heaphdr *) act->var_env);
			duk_heaphdr_decref_allownull(thr, (duk_heaphdr *) act->lex_env);
#ifdef DUK_USE_NONSTD_FUNC_CALLER_PROPERTY
			duk_heaphdr_decref_allownull(thr, (duk_heaphdr *) act->prev_caller);
#endif
		}

#if 0  /* nothing now */
		for (i = 0; i < (duk_uint_fast32_t) t->catchstack_top; i++) {
			duk_catcher *cat = t->catchstack + i;
		}
#endif

		for (i = 0; i < DUK_NUM_BUILTINS; i++) {
			duk_heaphdr_decref_allownull(thr, (duk_heaphdr *) t->builtins[i]);
		}

		duk_heaphdr_decref_allownull(thr, (duk_heaphdr *) t->resumer);
	}
}