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Implement BigInt primitve type and some of its operations (#4062)

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Supported operations:
- parse BigInt (decimal, hexadecimal, binary)
- toString with any radix between 2 and 36
- arithmetic operations: negate, add, subtract, multiply, divide, modulo
- left and right shift

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2020-07-30 12:08:34 +02:00
committed by GitHub
parent 3eb69075f7
commit df2f7782f7
29 changed files with 3237 additions and 192 deletions
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jerry-core/ecma/base/ecma-globals.h
+55 -16
View File
@@ -85,6 +85,7 @@ typedef enum
ECMA_TYPE_OBJECT = 3, /**< pointer to description of an object */
ECMA_TYPE_SYMBOL = 4, /**< pointer to description of a symbol */
ECMA_TYPE_DIRECT_STRING = 5, /**< directly encoded string values */
ECMA_TYPE_BIGINT = 6, /**< pointer to a bigint primitive */
ECMA_TYPE_ERROR = 7, /**< pointer to description of an error reference (only supported by C API) */
ECMA_TYPE_SNAPSHOT_OFFSET = ECMA_TYPE_ERROR, /**< offset to a snapshot number/string */
ECMA_TYPE___MAX = ECMA_TYPE_ERROR /** highest value for ecma types */
@@ -1710,28 +1711,44 @@ typedef struct
} ecma_stringbuilder_t;
/**
* Abort flag for error reference.
* Types for extended primitive values.
*/
#define ECMA_ERROR_REF_ABORT 0x1
/**
* Value for increasing or decreasing the reference counter.
*/
#define ECMA_ERROR_REF_ONE (1u << 1)
/**
* Maximum value of the reference counter.
*/
#define ECMA_ERROR_MAX_REF (UINT32_MAX - 1u)
typedef enum
{
#ifndef JERRY_BUILTIN_BIGINT
ECMA_EXTENDED_PRIMITIVE_BIGINT, /**< BigInt value */
#endif /* !defined (JERRY_BUILTIN_BIGINT) */
ECMA_EXTENDED_PRIMITIVE_ERROR, /**< external API error reference */
ECMA_EXTENDED_PRIMITIVE_ABORT, /**< external API abort reference */
} ecma_extended_primitive_type_t;
/**
* Representation of a thrown value on API level.
*/
typedef struct
{
uint32_t refs_and_flags; /**< reference counter */
ecma_value_t value; /**< referenced value */
} ecma_error_reference_t;
uint32_t refs_and_type; /**< reference counter and type */
union
{
ecma_value_t value; /**< referenced value */
uint32_t bigint_sign_and_size; /**< BigInt properties */
} u;
} ecma_extended_primitive_t;
/**
* Get the type of an extended primitve value.
*/
#define ECMA_EXTENDED_PRIMITIVE_GET_TYPE(primitve_p) ((primitve_p)->refs_and_type & 0x7)
/**
* Value for increasing or decreasing the reference counter.
*/
#define ECMA_EXTENDED_PRIMITIVE_REF_ONE (1u << 3)
/**
* Maximum value of the reference counter.
*/
#define ECMA_EXTENDED_PRIMITIVE_MAX_REF (UINT32_MAX - (ECMA_EXTENDED_PRIMITIVE_REF_ONE - 1))
#if ENABLED (JERRY_PROPRETY_HASHMAP)
@@ -2009,7 +2026,7 @@ typedef struct
ecma_object_t *buffer_p; /**< [[ViewedArrayBuffer]] internal slot */
uint32_t byte_offset; /**< [[ByteOffset]] internal slot */
} ecma_dataview_object_t;
#endif /* ENABLED (JERRY_BUILTIN_DATAVIEW */
#endif /* ENABLED (JERRY_BUILTIN_DATAVIEW) */
/**
* Flag for indicating whether the symbol is a well known symbol
@@ -2091,6 +2108,28 @@ typedef uint64_t ecma_length_t;
typedef uint32_t ecma_length_t;
#endif /* ENABLED (JERRY_ESNEXT) */
#if ENABLED (JERRY_BUILTIN_BIGINT)
/**
* BigUInt data is a sequence of uint32_t numbers.
*/
typedef uint32_t ecma_bigint_digit_t;
/**
* Return the size of a BigInt value in ecma_bigint_data_t units.
*/
#define ECMA_BIGINT_GET_SIZE(value_p) \
((value_p)->u.bigint_sign_and_size & ~(uint32_t) (sizeof (ecma_bigint_digit_t) - 1))
/**
* Size of memory needs to be allocated for the digits of a BigInt.
* The value is rounded up for two digits.
*/
#define ECMA_BIGINT_GET_BYTE_SIZE(size) \
(size_t) (((size) + sizeof (ecma_bigint_digit_t)) & ~(2 * sizeof (ecma_bigint_digit_t) - 1))
#endif /* ENABLED (JERRY_BUILTIN_BIGINT) */
/**
* Struct for counting the different types properties in objects
*/