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Rework flags representing arrow functions and complex arguments (#3957)

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This allows detecting cases which was not possible before.

Fixes #3944

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2020-06-30 14:00:35 +02:00
committed by GitHub
parent 122480aa61
commit cd949d9d64
9 changed files with 65 additions and 36 deletions
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jerry-core/parser/js/js-scanner-ops.c
+6 -4
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@@ -110,14 +110,16 @@ scanner_check_arrow (parser_context_t *context_p, /**< context */
scanner_literal_pool_t *literal_pool_p = scanner_context_p->active_literal_pool_p;
uint16_t status_flags = literal_pool_p->status_flags;
status_flags |= SCANNER_LITERAL_POOL_FUNCTION_WITHOUT_ARGUMENTS;
bool is_async_arrow = (status_flags & SCANNER_LITERAL_POOL_MAY_ASYNC_ARROW) != 0;
status_flags |= SCANNER_LITERAL_POOL_ARROW_FLAGS;
status_flags &= (uint16_t) ~(SCANNER_LITERAL_POOL_IN_WITH
| SCANNER_LITERAL_POOL_GENERATOR
| SCANNER_LITERAL_POOL_ASYNC);
context_p->status_flags &= (uint32_t) ~(PARSER_IS_GENERATOR_FUNCTION | PARSER_IS_ASYNC_FUNCTION);
if (status_flags & SCANNER_LITERAL_POOL_ASYNC_ARROW)
if (is_async_arrow)
{
status_flags |= SCANNER_LITERAL_POOL_ASYNC;
context_p->status_flags |= PARSER_IS_ASYNC_FUNCTION;
@@ -137,7 +139,7 @@ scanner_scan_simple_arrow (parser_context_t *context_p, /**< context */
scanner_context_t *scanner_context_p, /**< scanner context */
const uint8_t *source_p) /**< identifier end position */
{
uint16_t status_flags = SCANNER_LITERAL_POOL_FUNCTION_WITHOUT_ARGUMENTS;
uint16_t status_flags = SCANNER_LITERAL_POOL_ARROW_FLAGS;
context_p->status_flags &= (uint32_t) ~(PARSER_IS_GENERATOR_FUNCTION | PARSER_IS_ASYNC_FUNCTION);
@@ -519,7 +521,7 @@ scanner_scan_bracket (parser_context_t *context_p, /**< context */
if (JERRY_UNLIKELY (scanner_context_p->async_source_p != NULL))
{
status_flags |= SCANNER_LITERAL_POOL_ASYNC_ARROW;
status_flags |= SCANNER_LITERAL_POOL_MAY_ASYNC_ARROW;
arrow_source_p = scanner_context_p->async_source_p;
scanner_context_p->async_source_p = NULL;
}