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Initial implementation of class fields (#4191)

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Missing features:
 - this binding in static fields are not supported
 - static field evaluation order is wrong
 - function names are not supported

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2020-09-17 15:22:55 +02:00
committed by GitHub
parent 7345c83af7
commit d9653823ca
30 changed files with 1666 additions and 581 deletions
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jerry-core/parser/js/js-parser-internal.h
+28 -6
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@@ -69,16 +69,17 @@ typedef enum
PARSER_FUNCTION_HAS_REST_PARAM = (1u << 19), /**< function has rest parameter */
PARSER_CLASS_CONSTRUCTOR = (1u << 20), /**< a class constructor is parsed
* Note: PARSER_ALLOW_SUPER must be present */
/* These three status flags must be in this order. See PARSER_SAVED_FLAGS_OFFSET. */
/* These four status flags must be in this order. See PARSER_SAVED_FLAGS_OFFSET. */
PARSER_ALLOW_SUPER = (1u << 21), /**< allow super property access */
PARSER_ALLOW_SUPER_CALL = (1u << 22), /**< allow super constructor call
* Note: PARSER_CLASS_CONSTRUCTOR must be present */
PARSER_ALLOW_NEW_TARGET = (1u << 23), /**< allow new.target parsing in the current context */
PARSER_IS_METHOD = (1u << 24), /**< method is parsed */
PARSER_INSIDE_CLASS_FIELD = (1u << 23), /**< a class field is being parsed */
PARSER_ALLOW_NEW_TARGET = (1u << 24), /**< allow new.target parsing in the current context */
PARSER_IS_METHOD = (1u << 25), /**< method is parsed */
#endif /* ENABLED (JERRY_ESNEXT) */
#if ENABLED (JERRY_MODULE_SYSTEM)
PARSER_MODULE_DEFAULT_CLASS_OR_FUNC = (1u << 25), /**< parsing a function or class default export */
PARSER_MODULE_STORE_IDENT = (1u << 26), /**< store identifier of the current export statement */
PARSER_MODULE_DEFAULT_CLASS_OR_FUNC = (1u << 26), /**< parsing a function or class default export */
PARSER_MODULE_STORE_IDENT = (1u << 27), /**< store identifier of the current export statement */
#endif /* ENABLED (JERRY_MODULE_SYSTEM) */
PARSER_HAS_LATE_LIT_INIT = (1u << 30), /**< there are identifier or string literals which construction
* is postponed after the local parser data is freed */
@@ -129,6 +130,20 @@ typedef enum
#endif /* ENABLED (JERRY_ESNEXT) */
} parser_check_context_type_t;
#if ENABLED (JERRY_ESNEXT)
/**
* Class field bits.
*/
typedef enum
{
PARSER_CLASS_FIELD_END = (1u << 0), /**< last class field */
PARSER_CLASS_FIELD_NORMAL = (1u << 1), /**< normal (non-computed) class field */
PARSER_CLASS_FIELD_INITIALIZED = (1u << 2), /**< class field is initialized */
} parser_class_field_type_t;
#endif /* ENABLED (JERRY_ESNEXT) */
/**
* Mask for strict mode code
*/
@@ -704,6 +719,10 @@ void parser_set_continues_to_current_position (parser_context_t *context_p, pars
#define parser_emit_cbc_ext_backward_branch(context_p, opcode, offset) \
parser_emit_cbc_backward_branch ((context_p), PARSER_TO_EXT_OPCODE (opcode), (offset))
#if ENABLED (JERRY_ESNEXT)
void parser_reverse_class_fields (parser_context_t *context_p, size_t fields_size);
#endif /* ENABLED (JERRY_ESNEXT) */
/**
* @}
*
@@ -725,6 +744,7 @@ bool lexer_check_arrow (parser_context_t *context_p);
bool lexer_check_arrow_param (parser_context_t *context_p);
bool lexer_check_yield_no_arg (parser_context_t *context_p);
bool lexer_consume_generator (parser_context_t *context_p);
bool lexer_consume_assign (parser_context_t *context_p);
void lexer_update_await_yield (parser_context_t *context_p, uint32_t status_flags);
#endif /* ENABLED (JERRY_ESNEXT) */
void lexer_parse_string (parser_context_t *context_p, lexer_string_options_t opts);
@@ -736,7 +756,7 @@ void lexer_convert_ident_to_cesu8 (uint8_t *destination_p, const uint8_t *source
const uint8_t *lexer_convert_literal_to_chars (parser_context_t *context_p, const lexer_lit_location_t *literal_p,
uint8_t *local_byte_array_p, lexer_string_options_t opts);
void lexer_expect_object_literal_id (parser_context_t *context_p, uint32_t ident_opts);
uint16_t scanner_save_literal (parser_context_t *context_p, uint16_t ident_index);
lexer_literal_t *lexer_construct_unused_literal (parser_context_t *context_p);
void lexer_construct_literal_object (parser_context_t *context_p, const lexer_lit_location_t *lit_location_p,
uint8_t literal_type);
bool lexer_construct_number_object (parser_context_t *context_p, bool is_expr, bool is_negative_number);
@@ -804,6 +824,7 @@ void scanner_get_location (scanner_location_t *location_p, parser_context_t *con
void scanner_set_location (parser_context_t *context_p, scanner_location_t *location_p);
uint16_t scanner_decode_map_to (parser_scope_stack_t *stack_item_p);
#if ENABLED (JERRY_ESNEXT)
uint16_t scanner_save_literal (parser_context_t *context_p, uint16_t ident_index);
bool scanner_literal_is_const_reg (parser_context_t *context_p, uint16_t literal_index);
bool scanner_literal_is_created (parser_context_t *context_p, uint16_t literal_index);
#endif /* ENABLED (JERRY_ESNEXT) */
@@ -859,6 +880,7 @@ void parser_module_add_names_to_node (parser_context_t *context_p,
ecma_compiled_code_t *parser_parse_function (parser_context_t *context_p, uint32_t status_flags);
#if ENABLED (JERRY_ESNEXT)
ecma_compiled_code_t *parser_parse_arrow_function (parser_context_t *context_p, uint32_t status_flags);
ecma_compiled_code_t *parser_parse_class_fields (parser_context_t *context_p);
void parser_set_function_name (parser_context_t *context_p, uint16_t function_literal_index, uint16_t name_index,
uint32_t status_flags);
void parser_compiled_code_set_function_name (parser_context_t *context_p, ecma_compiled_code_t *bytecode_p,