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Fix instanceof to be correct and improve documentation of stack contents

This commit is contained in:
Daniel Silverstone 2015-09-09 14:00:37 +01:00 committed by Vincent Sanders
parent 410f6fdb9e
commit 73c6476112
1 changed files with 10 additions and 9 deletions
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19
javascript/dukky.c
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@ -42,29 +42,30 @@ duk_bool_t
dukky_instanceof_at(duk_context *ctx, duk_idx_t _idx, const char *klass)
{
duk_idx_t idx = duk_normalize_index(ctx, _idx);
/* ... ??? */
/* ... ??? ... */
if (!duk_check_type(ctx, idx, DUK_TYPE_OBJECT)) {
return false;
}
/* ... obj */
/* ... obj ... */
duk_get_global_string(ctx, "\xFF\xFFNETSURF_DUKTAPE_PROTOTYPES");
/* ... obj protos */
duk_get_prop_string(ctx, idx, klass);
/* ... obj protos goalproto */
/* ... obj ... protos */
duk_get_prop_string(ctx, -1, klass);
/* ... obj ... protos goalproto */
duk_get_prototype(ctx, idx);
/* ... obj protos goalproto proto? */
/* ... obj ... protos goalproto proto? */
while (!duk_is_undefined(ctx, -1)) {
if (duk_strict_equals(ctx, -1, -2)) {
duk_pop_3(ctx);
/* ... obj ... */
return true;
}
duk_get_prototype(ctx, -1);
/* ... obj protos goalproto proto proto? */
/* ... obj ... protos goalproto proto proto? */
duk_replace(ctx, -2);
/* ... obj protos goalproto proto? */
/* ... obj ... protos goalproto proto? */
}
duk_pop_3(ctx);
/* ... obj */
/* ... obj ... */
return false;
}