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Implement separate context for arguments. (#3686)

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Fixes #3396.

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2020-04-24 16:55:12 +02:00
committed by GitHub
parent dcf8ccfd03
commit e2807c28fa
9 changed files with 292 additions and 128 deletions
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jerry-core/parser/js/js-parser-internal.h
+30 -13
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@@ -58,25 +58,27 @@ typedef enum
PARSER_DEBUGGER_BREAKPOINT_APPENDED = (1u << 11), /**< pending (unsent) breakpoint
* info is available */
#if ENABLED (JERRY_ES2015)
PARSER_LEXICAL_BLOCK_NEEDED = (1u << 12), /**< script needs a lexical environment for let and const */
PARSER_LEXICAL_BLOCK_NEEDED = (1u << 12), /**< global script: needs a lexical environment for let and const
* function: needs a lexical environment for arguments */
PARSER_IS_ARROW_FUNCTION = (1u << 13), /**< an arrow function is parsed */
PARSER_IS_GENERATOR_FUNCTION = (1u << 14), /**< a generator function is parsed */
PARSER_IS_ASYNC_FUNCTION = (1u << 15), /**< an async function is parsed */
PARSER_DISALLOW_YIELD = (1u << 16), /**< throw SyntaxError for yield expression */
PARSER_FUNCTION_HAS_NON_SIMPLE_PARAM = (1u << 17), /**< function has a non simple parameter */
PARSER_FUNCTION_HAS_REST_PARAM = (1u << 18), /**< function has rest parameter */
PARSER_FUNCTION_IS_PARSING_ARGS = (1u << 17), /**< set when parsing function arguments */
PARSER_FUNCTION_HAS_NON_SIMPLE_PARAM = (1u << 18), /**< function has a non simple parameter */
PARSER_FUNCTION_HAS_REST_PARAM = (1u << 19), /**< function has rest parameter */
/* These 4 status flags must be in this order. See PARSER_SAVED_FLAGS_OFFSET. */
PARSER_CLASS_CONSTRUCTOR = (1u << 19), /**< a class constructor is parsed
PARSER_CLASS_CONSTRUCTOR = (1u << 20), /**< a class constructor is parsed
* Note: PARSER_ALLOW_SUPER must be present */
PARSER_ALLOW_SUPER = (1u << 20), /**< allow super property access */
PARSER_ALLOW_SUPER_CALL = (1u << 21), /**< allow super constructor call
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 << 22), /**< allow new.target parsing in the current context */
PARSER_ALLOW_NEW_TARGET = (1u << 23), /**< allow new.target parsing in the current context */
#endif /* ENABLED (JERRY_ES2015) */
#if ENABLED (JERRY_ES2015_MODULE_SYSTEM)
PARSER_MODULE_DEFAULT_CLASS_OR_FUNC = (1u << 23), /**< parsing a function or class default export */
PARSER_MODULE_STORE_IDENT = (1u << 24), /**< store identifier of the current export statement */
PARSER_MODULE_DEFAULT_CLASS_OR_FUNC = (1u << 24), /**< parsing a function or class default export */
PARSER_MODULE_STORE_IDENT = (1u << 25), /**< store identifier of the current export statement */
#endif /* ENABLED (JERRY_ES2015_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 */
@@ -115,6 +117,18 @@ typedef enum
PARSER_PATTERN_ARRAY = (1u << 8), /**< array pattern is being parsed */
} parser_pattern_flags_t;
/**
* Check type for scanner_is_context_needed function.
*/
typedef enum
{
PARSER_CHECK_BLOCK_CONTEXT, /**< check block context */
#if ENABLED (JERRY_ES2015)
PARSER_CHECK_GLOBAL_CONTEXT, /**< check global context */
PARSER_CHECK_FUNCTION_CONTEXT, /**< check function context */
#endif /* ENABLED (JERRY_ES2015) */
} parser_check_context_type_t;
/**
* Mask for strict mode code
*/
@@ -168,13 +182,17 @@ typedef enum
#define PARSER_SAVE_STATUS_FLAGS(opts) \
((uint16_t) (((opts) >> PARSER_SAVED_FLAGS_OFFSET) & PARSER_CLASS_ECMA_PARSE_OPTS_TO_PARSER_OPTS_MASK))
/* All flags that affect exotic arguments object creation. */
/**
* All flags that affect exotic arguments object creation.
*/
#define PARSER_ARGUMENTS_RELATED_FLAGS \
(PARSER_ARGUMENTS_NEEDED | PARSER_FUNCTION_HAS_NON_SIMPLE_PARAM | PARSER_IS_STRICT)
#else /* !ENABLED (JERRY_ES2015) */
/* All flags that affect exotic arguments object creation. */
/**
* All flags that affect exotic arguments object creation.
*/
#define PARSER_ARGUMENTS_RELATED_FLAGS \
(PARSER_ARGUMENTS_NEEDED | PARSER_IS_STRICT)
@@ -720,9 +738,8 @@ void scanner_seek (parser_context_t *context_p);
void scanner_reverse_info_list (parser_context_t *context_p);
void scanner_cleanup (parser_context_t *context_p);
bool scanner_is_context_needed (parser_context_t *context_p);
bool scanner_is_context_needed (parser_context_t *context_p, parser_check_context_type_t check_type);
#if ENABLED (JERRY_ES2015)
bool scanner_is_global_context_needed (parser_context_t *context_p);
bool scanner_scope_find_let_declaration (parser_context_t *context_p, lexer_lit_location_t *literal_p);
bool scanner_try_scan_new_target (parser_context_t *context_p);
void scanner_check_variables (parser_context_t *context_p);