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Generator declaration is not allowed in single statement position (#4815)

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JerryScript-DCO-1.0-Signed-off-by: Robert Sipka robert.sipka@h-lab.eu
This commit is contained in:
Robert Sipka
2021-11-09 08:38:09 +01:00
committed by GitHub
parent 80777799f6
commit 4592143400
5 changed files with 39 additions and 6 deletions
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jerry-core/parser/js/js-parser-statm.c
+7 -1
View File
@@ -600,7 +600,9 @@ parser_parse_function_statement (parser_context_t *context_p) /**< context */
JERRY_ASSERT (context_p->token.type == LEXER_KEYW_FUNCTION);
#if JERRY_ESNEXT
if (JERRY_UNLIKELY (parser_statement_flags[context_p->stack_top_uint8] & PARSER_STATM_SINGLE_STATM))
bool is_single_statement = (parser_statement_flags[context_p->stack_top_uint8] & PARSER_STATM_SINGLE_STATM) != 0;
if (JERRY_UNLIKELY (is_single_statement))
{
if (context_p->status_flags & PARSER_IS_STRICT)
{
@@ -667,6 +669,10 @@ parser_parse_function_statement (parser_context_t *context_p) /**< context */
if (lexer_consume_generator (context_p))
{
if (is_single_statement)
{
parser_raise_error (context_p, PARSER_ERR_GENERATOR_IN_SINGLE_STATEMENT_POS);
}
is_generator_function = true;
}
#endif /* JERRY_ESNEXT */
jerry-core/parser/js/js-parser-util.c
+4
View File
@@ -1243,6 +1243,10 @@ parser_error_to_string (parser_error_t error) /**< error code */
{
return "Lexical declaration cannot appear in a single-statement context";
}
case PARSER_ERR_GENERATOR_IN_SINGLE_STATEMENT_POS:
{
return "Generator function cannot appear in a single-statement context";
}
case PARSER_ERR_LABELLED_FUNC_NOT_IN_BLOCK:
{
return "Labelled functions are only allowed inside blocks";
jerry-core/parser/js/js-parser.h
+1
View File
@@ -141,6 +141,7 @@ typedef enum
#if JERRY_ESNEXT
PARSER_ERR_VARIABLE_REDECLARED, /**< a variable redeclared */
PARSER_ERR_LEXICAL_SINGLE_STATEMENT, /**< lexical declaration in single statement context */
PARSER_ERR_GENERATOR_IN_SINGLE_STATEMENT_POS, /**< generator func not allowed in single statement position */
PARSER_ERR_LABELLED_FUNC_NOT_IN_BLOCK, /**< labelled functions are only allowed inside blocks */
PARSER_ERR_LEXICAL_LET_BINDING, /**< let binding cannot be declared in let/const */
PARSER_ERR_MISSING_ASSIGN_AFTER_CONST, /**< an assignment is required after a const declaration */