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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
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jerry-core/parser/js/js-parser-internal.h
+20 -18
View File
@@ -55,32 +55,33 @@ typedef enum
PARSER_INSIDE_WITH = (1u << 9), /**< code block is inside a with statement */
PARSER_RESOLVE_BASE_FOR_CALLS = (1u << 10), /**< the this object must be resolved when
* a function without a base object is called */
PARSER_HAS_INITIALIZED_VARS = (1u << 11), /**< a CBC_INITIALIZE_VARS instruction must be emitted */
PARSER_HAS_LATE_LIT_INIT = (1u << 12), /**< allocate memory for this string after
PARSER_HAS_LATE_LIT_INIT = (1u << 11), /**< allocate memory for this string after
* the local parser data is freed */
PARSER_NO_END_LABEL = (1u << 13), /**< return instruction must be inserted
PARSER_NO_END_LABEL = (1u << 12), /**< return instruction must be inserted
* after the last byte code */
PARSER_DEBUGGER_BREAKPOINT_APPENDED = (1u << 14), /**< pending (unsent) breakpoint
PARSER_DEBUGGER_BREAKPOINT_APPENDED = (1u << 13), /**< pending (unsent) breakpoint
* info is available */
#if ENABLED (JERRY_ES2015)
PARSER_INSIDE_BLOCK = (1u << 15), /**< script has a lexical environment for let and const */
PARSER_IS_ARROW_FUNCTION = (1u << 16), /**< an arrow function is parsed */
PARSER_ARROW_PARSE_ARGS = (1u << 17), /**< parse the argument list of an arrow function */
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 */
PARSER_INSIDE_BLOCK = (1u << 14), /**< script has a lexical environment for let and const */
PARSER_IS_ARROW_FUNCTION = (1u << 15), /**< an arrow function is parsed */
PARSER_ARROW_PARSE_ARGS = (1u << 16), /**< parse the argument list of an arrow function */
PARSER_IS_GENERATOR_FUNCTION = (1u << 17), /**< a generator function is parsed */
PARSER_DISALLOW_YIELD = (1u << 18), /**< throw SyntaxError for yield expression */
PARSER_FUNCTION_HAS_NON_SIMPLE_PARAM = (1u << 19), /**< function has a non simple parameter */
PARSER_FUNCTION_HAS_REST_PARAM = (1u << 20), /**< function has rest parameter */
/* These four status flags must be in this order. See PARSER_CLASS_PARSE_OPTS_OFFSET. */
PARSER_CLASS_CONSTRUCTOR = (1u << 20), /**< a class constructor is parsed (this value must be kept in
PARSER_CLASS_CONSTRUCTOR = (1u << 21), /**< a class constructor is parsed (this value must be kept in
* in sync with ECMA_PARSE_CLASS_CONSTRUCTOR) */
PARSER_CLASS_HAS_SUPER = (1u << 21), /**< class has super reference */
PARSER_CLASS_IMPLICIT_SUPER = (1u << 22), /**< class has implicit parent class */
PARSER_CLASS_STATIC_FUNCTION = (1u << 23), /**< this function is a static class method */
PARSER_CLASS_SUPER_PROP_REFERENCE = (1u << 24), /**< super property call or assignment */
PARSER_IS_EVAL = (1u << 25), /**< eval code */
PARSER_CLASS_HAS_SUPER = (1u << 22), /**< class has super reference */
PARSER_CLASS_IMPLICIT_SUPER = (1u << 23), /**< class has implicit parent class */
PARSER_CLASS_STATIC_FUNCTION = (1u << 24), /**< this function is a static class method */
PARSER_CLASS_SUPER_PROP_REFERENCE = (1u << 25), /**< super property call or assignment */
PARSER_IS_EVAL = (1u << 26), /**< eval code */
#endif /* ENABLED (JERRY_ES2015) */
#if ENABLED (JERRY_ES2015_MODULE_SYSTEM)
PARSER_IS_MODULE = (1u << 26), /**< an export / import keyword is encountered */
PARSER_MODULE_DEFAULT_CLASS_OR_FUNC = (1u << 27), /**< parsing a function or class default export */
PARSER_MODULE_STORE_IDENT = (1u << 28), /**< store identifier of the current export statement */
PARSER_IS_MODULE = (1u << 27), /**< an export / import keyword is encountered */
PARSER_MODULE_DEFAULT_CLASS_OR_FUNC = (1u << 28), /**< parsing a function or class default export */
PARSER_MODULE_STORE_IDENT = (1u << 29), /**< store identifier of the current export statement */
#endif /* ENABLED (JERRY_ES2015_MODULE_SYSTEM) */
#ifndef JERRY_NDEBUG
PARSER_SCANNING_SUCCESSFUL = (1u << 30), /**< scanning process was successful */
@@ -624,6 +625,7 @@ uint8_t lexer_consume_next_character (parser_context_t *context_p);
void lexer_skip_empty_statements (parser_context_t *context_p);
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);
#endif /* ENABLED (JERRY_ES2015) */
void lexer_parse_string (parser_context_t *context_p);
void lexer_expect_identifier (parser_context_t *context_p, uint8_t literal_type);