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Implement parsing await. (#3738)

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Several bugs fixed for parsing yield as well.

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2020-05-15 22:26:05 +02:00
committed by GitHub
parent a6f6bce6f0
commit 1f00d750b7
21 changed files with 569 additions and 135 deletions
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jerry-core/parser/js/js-scanner-internal.h
+35 -5
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@@ -95,10 +95,13 @@ typedef enum
SCAN_STACK_CATCH_STATEMENT, /**< catch statement */
SCAN_STACK_ARRAY_LITERAL, /**< array literal or destructuring assignment or binding */
SCAN_STACK_OBJECT_LITERAL, /**< object literal group */
SCAN_STACK_PROPERTY_ACCESSOR, /**< property accessor in squarey brackets */
SCAN_STACK_PROPERTY_ACCESSOR, /**< property accessor in square brackets */
#if ENABLED (JERRY_ES2015)
/* These four must be in this order. */
SCAN_STACK_COMPUTED_PROPERTY, /**< computed property name */
SCAN_STACK_COMPUTED_GENERATOR_FUNCTION, /**< computed property name */
SCAN_STACK_COMPUTED_GENERATOR, /**< computed generator function */
SCAN_STACK_COMPUTED_ASYNC, /**< computed async function */
SCAN_STACK_COMPUTED_ASYNC_GENERATOR, /**< computed async function */
SCAN_STACK_TEMPLATE_STRING, /**< template string */
SCAN_STACK_TAGGED_TEMPLATE_LITERAL, /**< tagged template literal */
SCAN_STACK_PRIVATE_BLOCK_EARLY, /**< private block for single statements (force early declarations) */
@@ -115,6 +118,20 @@ typedef enum
#endif /* ENABLED (JERRY_ES2015) */
} scan_stack_modes_t;
/**
* Scanner context flag types.
*/
typedef enum
{
SCANNER_CONTEXT_NO_FLAGS = 0, /**< no flags are set */
#if ENABLED (JERRY_ES2015)
SCANNER_CONTEXT_THROW_ERR_ASYNC_FUNCTION = (1 << 0), /**< throw async function error */
#endif /* ENABLED (JERRY_ES2015) */
#if ENABLED (JERRY_DEBUGGER)
SCANNER_CONTEXT_DEBUGGER_ENABLED = (1 << 1), /**< debugger is enabled */
#endif /* ENABLED (JERRY_DEBUGGER) */
} scanner_context_flags_t;
/**
* Checks whether the stack top is a for statement start.
*/
@@ -269,6 +286,7 @@ typedef enum
SCANNER_LITERAL_POOL_FUNCTION_STATEMENT = (1 << 8), /**< function statement */
SCANNER_LITERAL_POOL_GENERATOR = (1 << 9), /**< generator function */
SCANNER_LITERAL_POOL_ASYNC = (1 << 10), /**< async function */
SCANNER_LITERAL_POOL_ASYNC_ARROW = (1 << 11), /**< can be an async arrow function */
#endif /* ENABLED (JERRY_ES2015) */
} scanner_literal_pool_flags_t;
@@ -278,6 +296,18 @@ typedef enum
#define SCANNER_LITERAL_POOL_FUNCTION_WITHOUT_ARGUMENTS \
(SCANNER_LITERAL_POOL_FUNCTION | SCANNER_LITERAL_POOL_NO_ARGUMENTS)
/**
* Getting the generator and async properties of literal pool status flags.
*/
#define SCANNER_FROM_LITERAL_POOL_TO_COMPUTED(status_flags) \
((uint8_t) ((((status_flags) >> 9) & 0x3) + SCAN_STACK_COMPUTED_PROPERTY))
/**
* Setting the generator and async properties of literal pool status flags.
*/
#define SCANNER_FROM_COMPUTED_TO_LITERAL_POOL(mode) \
(((mode) - SCAN_STACK_COMPUTED_PROPERTY) << 9)
/**
* Local literal pool.
*/
@@ -297,11 +327,11 @@ struct scanner_context_t
{
uint32_t context_status_flags; /**< original status flags of the context */
uint8_t mode; /**< scanner mode */
#if ENABLED (JERRY_DEBUGGER)
uint8_t debugger_enabled; /**< debugger is enabled */
#endif /* ENABLED (JERRY_DEBUGGER) */
#if ENABLED (JERRY_ES2015)
uint8_t binding_type; /**< current destructuring binding type */
#endif /* ENABLED (JERRY_ES2015) */
uint16_t status_flags; /**< scanner status flags */
#if ENABLED (JERRY_ES2015)
scanner_binding_list_t *active_binding_list_p; /**< currently active binding list */
#endif /* ENABLED (JERRY_ES2015) */
scanner_literal_pool_t *active_literal_pool_p; /**< currently active literal pool */