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Detect assignment pattern for for-in/of (#4140)

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Furthermore do not allow default value for rest parameter

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2020-08-24 14:47:10 +02:00
committed by GitHub
parent 5b3f01af9d
commit 84bc1e03fb
10 changed files with 123 additions and 446 deletions
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jerry-core/parser/js/js-parser-statm.c
+24
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@@ -1324,6 +1324,11 @@ parser_parse_for_statement_start (parser_context_t *context_p) /**< context */
if (token_type == LEXER_EOS)
{
lexer_next_token (context_p);
if (context_p->token.type == LEXER_LEFT_SQUARE || context_p->token.type == LEXER_LEFT_BRACE)
{
token_type = context_p->token.type;
}
}
#else /* !ENABLED (JERRY_ESNEXT) */
lexer_next_token (context_p);
@@ -1411,6 +1416,25 @@ parser_parse_for_statement_start (parser_context_t *context_p) /**< context */
#endif /* ENABLED (JERRY_ESNEXT) */
break;
}
#if ENABLED (JERRY_ESNEXT)
case LEXER_LEFT_BRACE:
case LEXER_LEFT_SQUARE:
{
if (context_p->next_scanner_info_p->source_p == context_p->source_p
&& context_p->next_scanner_info_p->type == SCANNER_TYPE_FOR_PATTERN)
{
parser_emit_cbc_ext (context_p, is_for_in ? CBC_EXT_FOR_IN_GET_NEXT
: CBC_EXT_FOR_OF_GET_NEXT);
scanner_release_next (context_p, sizeof (scanner_info_t));
parser_parse_initializer (context_p, PARSER_PATTERN_TARGET_ON_STACK);
/* Pop the value returned by GET_NEXT. */
parser_emit_cbc (context_p, CBC_POP);
break;
}
/* FALLTHRU */
}
#endif /* ENABLED (JERRY_ESNEXT) */
default:
{
uint16_t opcode;