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Implement the core of the generator functions. (#3368)

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Some things are missing:
 - yield* support
 - generator definition in object literal
 - the hidden GeneratorFunction

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2019-11-28 11:54:27 +01:00
committed by Dániel Bátyai
parent 14e95a4775
commit 110f75c99d
35 changed files with 1535 additions and 85 deletions
Download Patch File Download Diff File Expand all files Collapse all files
jerry-core/parser/js/js-parser-statm.c
+18 -5
View File
@@ -627,9 +627,6 @@ parser_parse_var_statement (parser_context_t *context_p) /**< context */
static void
parser_parse_function_statement (parser_context_t *context_p) /**< context */
{
uint32_t status_flags;
lexer_literal_t *literal_p;
JERRY_ASSERT (context_p->token.type == LEXER_KEYW_FUNCTION);
#if ENABLED (JERRY_ES2015)
@@ -646,6 +643,16 @@ parser_parse_function_statement (parser_context_t *context_p) /**< context */
parser_line_counter_t debugger_column = context_p->token.column;
#endif /* ENABLED (JERRY_DEBUGGER) */
#if ENABLED (JERRY_ES2015)
bool is_generator_function = false;
if (lexer_check_next_character (context_p, LIT_CHAR_ASTERISK))
{
is_generator_function = true;
lexer_consume_next_character (context_p);
}
#endif /* ENABLED (JERRY_ES2015) */
lexer_expect_identifier (context_p, LEXER_NEW_IDENT_LITERAL);
JERRY_ASSERT (context_p->token.type == LEXER_LITERAL
&& context_p->token.lit_location.type == LEXER_IDENT_LITERAL);
@@ -663,13 +670,19 @@ parser_parse_function_statement (parser_context_t *context_p) /**< context */
context_p->status_flags &= (uint32_t) ~(PARSER_MODULE_STORE_IDENT);
#endif /* ENABLED (JERRY_ES2015_MODULE_SYSTEM) */
status_flags = PARSER_IS_FUNCTION | PARSER_IS_CLOSURE;
uint32_t status_flags = PARSER_IS_FUNCTION | PARSER_IS_CLOSURE;
if (context_p->lit_object.type != LEXER_LITERAL_OBJECT_ANY)
{
JERRY_ASSERT (context_p->lit_object.type == LEXER_LITERAL_OBJECT_EVAL
|| context_p->lit_object.type == LEXER_LITERAL_OBJECT_ARGUMENTS);
status_flags |= PARSER_HAS_NON_STRICT_ARG;
}
#if ENABLED (JERRY_ES2015)
if (is_generator_function)
{
status_flags |= PARSER_IS_GENERATOR_FUNCTION | PARSER_DISALLOW_YIELD;
}
#endif /* ENABLED (JERRY_ES2015) */
#if ENABLED (JERRY_DEBUGGER)
if (JERRY_CONTEXT (debugger_flags) & JERRY_DEBUGGER_CONNECTED)
@@ -700,7 +713,7 @@ parser_parse_function_statement (parser_context_t *context_p) /**< context */
JERRY_ASSERT (scope_stack_p[1].map_from == PARSER_SCOPE_STACK_FUNC);
literal_p = PARSER_GET_LITERAL ((size_t) scope_stack_p[1].map_to);
lexer_literal_t *literal_p = PARSER_GET_LITERAL ((size_t) scope_stack_p[1].map_to);
JERRY_ASSERT ((literal_p->type == LEXER_UNUSED_LITERAL || literal_p->type == LEXER_FUNCTION_LITERAL)
&& literal_p->status_flags == 0);