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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.c
+30 -17
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@@ -692,6 +692,11 @@ parse_print_final_cbc (ecma_compiled_code_t *compiled_code_p, /**< compiled code
JERRY_DEBUG_MSG (",async");
break;
}
case CBC_FUNCTION_ASYNC_GENERATOR:
{
JERRY_DEBUG_MSG (",async_generator");
break;
}
case CBC_FUNCTION_ARROW:
{
JERRY_DEBUG_MSG (",arrow");
@@ -957,7 +962,7 @@ parser_post_processing (parser_context_t *context_p) /**< context */
JERRY_ASSERT (!(context_p->status_flags & PARSER_NO_END_LABEL));
}
if (context_p->status_flags & PARSER_IS_ASYNC_FUNCTION)
if (PARSER_IS_NORMAL_ASYNC_FUNCTION (context_p->status_flags))
{
PARSER_MINUS_EQUAL_U16 (context_p->stack_depth, PARSER_TRY_CONTEXT_STACK_ALLOCATION);
#ifndef JERRY_NDEBUG
@@ -1195,7 +1200,7 @@ parser_post_processing (parser_context_t *context_p) /**< context */
context_p->status_flags &= (uint32_t) ~PARSER_NO_END_LABEL;
#if ENABLED (JERRY_ESNEXT)
if (context_p->status_flags & PARSER_IS_ASYNC_FUNCTION)
if (PARSER_IS_NORMAL_ASYNC_FUNCTION (context_p->status_flags))
{
length++;
}
@@ -1350,31 +1355,42 @@ parser_post_processing (parser_context_t *context_p) /**< context */
}
#if ENABLED (JERRY_ESNEXT)
uint16_t function_type = CBC_FUNCTION_TO_TYPE_BITS (CBC_FUNCTION_NORMAL);
if (context_p->status_flags & (PARSER_IS_PROPERTY_GETTER | PARSER_IS_PROPERTY_SETTER))
{
compiled_code_p->status_flags |= CBC_FUNCTION_TO_TYPE_BITS (CBC_FUNCTION_ACCESSOR);
function_type = CBC_FUNCTION_TO_TYPE_BITS (CBC_FUNCTION_ACCESSOR);
}
else if (context_p->status_flags & PARSER_IS_ARROW_FUNCTION)
{
compiled_code_p->status_flags |= CBC_FUNCTION_TO_TYPE_BITS (CBC_FUNCTION_ARROW);
function_type = CBC_FUNCTION_TO_TYPE_BITS (CBC_FUNCTION_ARROW);
}
else if (context_p->status_flags & PARSER_IS_GENERATOR_FUNCTION)
{
compiled_code_p->status_flags |= CBC_FUNCTION_TO_TYPE_BITS (CBC_FUNCTION_GENERATOR);
if (context_p->status_flags & PARSER_IS_ASYNC_FUNCTION)
{
function_type = CBC_FUNCTION_TO_TYPE_BITS (CBC_FUNCTION_ASYNC_GENERATOR);
}
else
{
function_type = CBC_FUNCTION_TO_TYPE_BITS (CBC_FUNCTION_GENERATOR);
}
}
else if (context_p->status_flags & PARSER_IS_ASYNC_FUNCTION)
{
compiled_code_p->status_flags |= CBC_FUNCTION_TO_TYPE_BITS (CBC_FUNCTION_ASYNC);
function_type = CBC_FUNCTION_TO_TYPE_BITS (CBC_FUNCTION_ASYNC);
}
else if (context_p->status_flags & PARSER_CLASS_CONSTRUCTOR)
{
compiled_code_p->status_flags |= CBC_FUNCTION_TO_TYPE_BITS (CBC_FUNCTION_CONSTRUCTOR);
function_type = CBC_FUNCTION_TO_TYPE_BITS (CBC_FUNCTION_CONSTRUCTOR);
}
else
{
compiled_code_p->status_flags |= CBC_FUNCTION_TO_TYPE_BITS (CBC_FUNCTION_NORMAL);
function_type = CBC_FUNCTION_TO_TYPE_BITS (CBC_FUNCTION_NORMAL);
}
compiled_code_p->status_flags |= function_type;
if (context_p->status_flags & PARSER_FUNCTION_HAS_REST_PARAM)
{
compiled_code_p->status_flags |= CBC_CODE_FLAGS_REST_PARAMETER;
@@ -1582,7 +1598,7 @@ parser_post_processing (parser_context_t *context_p) /**< context */
*dst_p++ = CBC_RETURN_WITH_BLOCK;
#if ENABLED (JERRY_ESNEXT)
if (context_p->status_flags & PARSER_IS_ASYNC_FUNCTION)
if (PARSER_IS_NORMAL_ASYNC_FUNCTION (context_p->status_flags))
{
dst_p[-1] = CBC_EXT_OPCODE;
dst_p[0] = CBC_EXT_ASYNC_EXIT;
@@ -1745,14 +1761,7 @@ parser_parse_function_arguments (parser_context_t *context_p, /**< context */
bool has_duplicated_arg_names = false;
/* TODO: Currently async iterators are not supported, so generators ignore the async modifier. */
uint32_t mask = (PARSER_IS_GENERATOR_FUNCTION | PARSER_IS_ASYNC_FUNCTION);
if ((context_p->status_flags & mask) == mask)
{
context_p->status_flags &= (uint32_t) ~PARSER_IS_ASYNC_FUNCTION;
}
if (context_p->status_flags & PARSER_IS_ASYNC_FUNCTION)
if (PARSER_IS_NORMAL_ASYNC_FUNCTION (context_p->status_flags))
{
parser_branch_t branch;
parser_emit_cbc_ext_forward_branch (context_p, CBC_EXT_TRY_CREATE_CONTEXT, &branch);
@@ -2058,6 +2067,10 @@ parser_parse_source (const uint8_t *arg_list_p, /**< function argument list */
{
context.status_flags |= PARSER_IS_GENERATOR_FUNCTION;
}
if (parse_opts & ECMA_PARSE_ASYNC_FUNCTION)
{
context.status_flags |= PARSER_IS_ASYNC_FUNCTION;
}
#endif /* ENABLED (JERRY_ESNEXT) */
}