70 lines
1.8 KiB
C
70 lines
1.8 KiB
C
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/*
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* Boolean built-ins
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*/
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#include "duk_internal.h"
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#if defined(DUK_USE_BOOLEAN_BUILTIN)
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/* Shared helper to provide toString() and valueOf(). Checks 'this', gets
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* the primitive value to stack top, and optionally coerces with ToString().
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*/
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DUK_INTERNAL duk_ret_t duk_bi_boolean_prototype_tostring_shared(duk_hthread *thr) {
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duk_tval *tv;
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duk_hobject *h;
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duk_small_int_t coerce_tostring = duk_get_current_magic(thr);
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/* XXX: there is room to use a shared helper here, many built-ins
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* check the 'this' type, and if it's an object, check its class,
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* then get its internal value, etc.
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*/
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duk_push_this(thr);
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tv = duk_get_tval(thr, -1);
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DUK_ASSERT(tv != NULL);
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if (DUK_TVAL_IS_BOOLEAN(tv)) {
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goto type_ok;
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} else if (DUK_TVAL_IS_OBJECT(tv)) {
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h = DUK_TVAL_GET_OBJECT(tv);
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DUK_ASSERT(h != NULL);
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if (DUK_HOBJECT_GET_CLASS_NUMBER(h) == DUK_HOBJECT_CLASS_BOOLEAN) {
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duk_xget_owndataprop_stridx_short(thr, -1, DUK_STRIDX_INT_VALUE);
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DUK_ASSERT(duk_is_boolean(thr, -1));
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goto type_ok;
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}
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}
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DUK_DCERROR_TYPE_INVALID_ARGS(thr);
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/* never here */
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type_ok:
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if (coerce_tostring) {
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duk_to_string(thr, -1);
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}
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return 1;
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}
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DUK_INTERNAL duk_ret_t duk_bi_boolean_constructor(duk_hthread *thr) {
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duk_hobject *h_this;
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duk_to_boolean(thr, 0);
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if (duk_is_constructor_call(thr)) {
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/* XXX: helper; rely on Boolean.prototype as being non-writable, non-configurable */
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duk_push_this(thr);
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h_this = duk_known_hobject(thr, -1);
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DUK_ASSERT(DUK_HOBJECT_GET_PROTOTYPE(thr->heap, h_this) == thr->builtins[DUK_BIDX_BOOLEAN_PROTOTYPE]);
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DUK_HOBJECT_SET_CLASS_NUMBER(h_this, DUK_HOBJECT_CLASS_BOOLEAN);
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duk_dup_0(thr); /* -> [ val obj val ] */
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duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_INT_VALUE, DUK_PROPDESC_FLAGS_NONE); /* XXX: proper flags? */
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} /* unbalanced stack */
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return 1;
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}
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#endif /* DUK_USE_BOOLEAN_BUILTIN */
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