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Exporting undeclared variables should throw a SyntaxError (#4276)

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JerryScript-DCO-1.0-Signed-off-by: Dániel Bátyai daniel.batyai@h-lab.eu
This commit is contained in:
Dániel Bátyai
2020-10-15 14:48:25 +02:00
committed by GitHub
parent f6cf1400bd
commit 650269feca
9 changed files with 62 additions and 4 deletions
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jerry-core/parser/js/js-scanner-util.c
+27 -1
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@@ -1764,7 +1764,8 @@ scanner_cleanup (parser_context_t *context_p) /**< context */
|| scanner_info_p->type == SCANNER_TYPE_CLASS_CONSTRUCTOR
|| scanner_info_p->type == SCANNER_TYPE_OBJECT_LITERAL_WITH_SUPER
|| scanner_info_p->type == SCANNER_TYPE_ERR_REDECLARED
|| scanner_info_p->type == SCANNER_TYPE_ERR_ASYNC_FUNCTION);
|| scanner_info_p->type == SCANNER_TYPE_ERR_ASYNC_FUNCTION
|| scanner_info_p->type == SCANNER_TYPE_EXPORT_MODULE_SPECIFIER);
#else /* !ENABLED (JERRY_ESNEXT) */
JERRY_ASSERT (scanner_info_p->type == SCANNER_TYPE_END_ARGUMENTS);
#endif /* ENABLED (JERRY_ESNEXT) */
@@ -2713,6 +2714,31 @@ scanner_literal_is_created (parser_context_t *context_p, /**< context */
return (scope_stack_p->map_to & PARSER_SCOPE_STACK_IS_LOCAL_CREATED) != 0;
} /* scanner_literal_is_created */
/**
* Checks whether the literal exists.
*
* @return true if the literal exists, false otherwise
*/
bool
scanner_literal_exists (parser_context_t *context_p, /**< context */
uint16_t literal_index) /**< literal index */
{
JERRY_ASSERT (literal_index < PARSER_REGISTER_START);
parser_scope_stack_t *scope_stack_p = context_p->scope_stack_p + context_p->scope_stack_top;
while (scope_stack_p-- > context_p->scope_stack_p)
{
if (scope_stack_p->map_from != PARSER_SCOPE_STACK_FUNC
&& scanner_decode_map_to (scope_stack_p) == literal_index)
{
return true;
}
}
return false;
} /* scanner_literal_exists */
#endif /* ENABLED (JERRY_ESNEXT) */
/**