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Implement binding pattern support for rest argument and for statement. (#3327)

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JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2019-11-19 14:02:17 +01:00
committed by Dániel Bátyai
parent a7d129c8b2
commit bf630c0c54
9 changed files with 153 additions and 11 deletions
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jerry-core/parser/js/js-parser-statm.c
+30 -5
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@@ -496,8 +496,7 @@ parser_parse_var_statement (parser_context_t *context_p) /**< context */
while (true)
{
#if ENABLED (JERRY_ES2015)
if (lexer_check_next_character (context_p, LIT_CHAR_LEFT_BRACE)
|| lexer_check_next_character (context_p, LIT_CHAR_LEFT_SQUARE))
if (lexer_check_next_characters (context_p, LIT_CHAR_LEFT_SQUARE, LIT_CHAR_LEFT_BRACE))
{
lexer_next_token (context_p);
parser_pattern_flags_t options = PARSER_PATTERN_BINDING;
@@ -1199,14 +1198,40 @@ parser_parse_for_statement_start (parser_context_t *context_p) /**< context */
#endif /* ENABLED (JERRY_ES2015) */
case LEXER_KEYW_VAR:
{
uint16_t literal_index;
#if ENABLED (JERRY_ES2015)
if (lexer_check_next_characters (context_p, LIT_CHAR_LEFT_SQUARE, LIT_CHAR_LEFT_BRACE))
{
bool is_lexical = (context_p->token.type != LEXER_KEYW_VAR);
lexer_next_token (context_p);
parser_emit_cbc_ext (context_p, is_for_in ? CBC_EXT_FOR_IN_GET_NEXT
: CBC_EXT_FOR_OF_GET_NEXT);
if (context_p->next_scanner_info_p->source_p == context_p->source_p)
{
JERRY_ASSERT (context_p->next_scanner_info_p->type == SCANNER_TYPE_INITIALIZER);
scanner_release_next (context_p, sizeof (scanner_location_info_t));
}
uint32_t flags = (PARSER_PATTERN_BINDING | PARSER_PATTERN_TARGET_ON_STACK);
if (is_lexical)
{
flags |= PARSER_PATTERN_LEXICAL;
}
parser_parse_initializer (context_p, (parser_pattern_flags_t) flags);
break;
}
#endif /* ENABLED (JERRY_ES2015) */
lexer_expect_identifier (context_p, LEXER_IDENT_LITERAL);
JERRY_ASSERT (context_p->token.type == LEXER_LITERAL
&& context_p->token.lit_location.type == LEXER_IDENT_LITERAL);
literal_index = context_p->lit_object.index;
uint16_t literal_index = context_p->lit_object.index;
lexer_next_token (context_p);
if (context_p->token.type == LEXER_ASSIGN)