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Implement yield* operator (#3923)

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Missing features:
- caching next() method (this also true for normal generators)
- automatic sync to async generator conversion

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2020-06-25 17:11:16 +02:00
committed by GitHub
parent c12c60c550
commit f88489beef
28 changed files with 1258 additions and 111 deletions
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jerry-core/parser/js/byte-code.c
+1 -1
View File
@@ -27,7 +27,7 @@ JERRY_STATIC_ASSERT ((sizeof (cbc_uint16_arguments_t) % sizeof (jmem_cpointer_t)
*/
JERRY_STATIC_ASSERT (CBC_END == 238,
number_of_cbc_opcodes_changed);
JERRY_STATIC_ASSERT (CBC_EXT_END == 121,
JERRY_STATIC_ASSERT (CBC_EXT_END == 122,
number_of_cbc_ext_opcodes_changed);
#if ENABLED (JERRY_PARSER)
jerry-core/parser/js/byte-code.h
+2
View File
@@ -736,6 +736,8 @@
VM_OC_YIELD) \
CBC_OPCODE (CBC_EXT_ASYNC_YIELD, CBC_NO_FLAG, 0, \
VM_OC_ASYNC_YIELD) \
CBC_OPCODE (CBC_EXT_ASYNC_YIELD_ITERATOR, CBC_NO_FLAG, 0, \
VM_OC_ASYNC_YIELD_ITERATOR) \
CBC_OPCODE (CBC_EXT_AWAIT, CBC_NO_FLAG, 0, \
VM_OC_AWAIT) \
CBC_OPCODE (CBC_EXT_GENERATOR_AWAIT, CBC_NO_FLAG, 0, \
jerry-core/parser/js/js-parser-expr.c
+2 -7
View File
@@ -1971,13 +1971,8 @@ parser_parse_unary_expression (parser_context_t *context_p, /**< context */
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);
}
opcode = ((context_p->status_flags & PARSER_IS_ASYNC_FUNCTION) ? CBC_EXT_ASYNC_YIELD_ITERATOR
: CBC_EXT_YIELD_ITERATOR);
}
parser_parse_expression (context_p, PARSE_EXPR_NO_COMMA);