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Implement rest parameter support for destructuring object patterns in for (#4338)

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In case of `for (const {...rest} ...) ` there was an incorrectly handling
of the destructuring pattern.

JerryScript-DCO-1.0-Signed-off-by: Peter Gal pgal.usz@partner.samsung.com
This commit is contained in:
Péter Gál
2020-11-17 10:35:27 +01:00
committed by GitHub
parent fab35c3f93
commit 65db83561f
3 changed files with 37 additions and 45 deletions
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jerry-core/parser/js/js-parser-statm.c
+15 -4
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@@ -1350,15 +1350,26 @@ parser_parse_for_statement_start (parser_context_t *context_p) /**< context */
parser_emit_cbc_ext (context_p, is_for_in ? CBC_EXT_FOR_IN_GET_NEXT
: CBC_EXT_FOR_OF_GET_NEXT);
parser_pattern_flags_t flags = (PARSER_PATTERN_BINDING | PARSER_PATTERN_TARGET_ON_STACK);
if (context_p->next_scanner_info_p->source_p == (context_p->source_p + 1))
{
JERRY_ASSERT (context_p->next_scanner_info_p->type == SCANNER_TYPE_INITIALIZER);
if (context_p->next_scanner_info_p->type == SCANNER_TYPE_INITIALIZER)
{
scanner_release_next (context_p, sizeof (scanner_location_info_t));
}
else
{
JERRY_ASSERT (context_p->next_scanner_info_p->type == SCANNER_TYPE_LITERAL_FLAGS);
if (context_p->next_scanner_info_p->u8_arg & SCANNER_LITERAL_OBJECT_HAS_REST)
{
flags |= PARSER_PATTERN_HAS_REST_ELEMENT;
}
scanner_release_next (context_p, sizeof (scanner_location_info_t));
scanner_release_next (context_p, sizeof (scanner_info_t));
}
}
parser_pattern_flags_t flags = (PARSER_PATTERN_BINDING | PARSER_PATTERN_TARGET_ON_STACK);
if (token_type == LEXER_KEYW_LET)
{
flags |= PARSER_PATTERN_LET;