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Implement async generators (#3916)

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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
2020-06-22 13:54:18 +02:00
committed by GitHub
parent 0f0041d720
commit b2a6109430
32 changed files with 1247 additions and 50 deletions
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jerry-core/parser/js/js-parser-expr.c
+11 -3
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@@ -1964,14 +1964,20 @@ parser_parse_unary_expression (parser_context_t *context_p, /**< context */
parser_check_assignment_expr (context_p);
lexer_next_token (context_p);
cbc_ext_opcode_t opcode = CBC_EXT_YIELD;
cbc_ext_opcode_t opcode = ((context_p->status_flags & PARSER_IS_ASYNC_FUNCTION) ? CBC_EXT_ASYNC_YIELD
: CBC_EXT_YIELD);
if (!lexer_check_yield_no_arg (context_p))
{
if (context_p->token.type == LEXER_MULTIPLY)
{
lexer_next_token (context_p);
opcode = CBC_EXT_YIELD_ITERATOR;
/* TODO: support yield * in async generator. Currently a meaningless error is thrown. */
if (context_p->status_flags & PARSER_IS_ASYNC_FUNCTION)
{
parser_raise_error (context_p, PARSER_ERR_INVALID_CHARACTER);
}
}
parser_parse_expression (context_p, PARSE_EXPR_NO_COMMA);
@@ -2389,7 +2395,9 @@ parser_process_unary_expression (parser_context_t *context_p, /**< context */
#if ENABLED (JERRY_ESNEXT)
else if (JERRY_UNLIKELY (token == LEXER_KEYW_AWAIT))
{
parser_emit_cbc_ext (context_p, CBC_EXT_AWAIT);
cbc_ext_opcode_t opcode = ((context_p->status_flags & PARSER_IS_GENERATOR_FUNCTION) ? CBC_EXT_GENERATOR_AWAIT
: CBC_EXT_AWAIT);
parser_emit_cbc_ext (context_p, opcode);
}
#endif /* ENABLED (JERRY_ESNEXT) */
else