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Implement String.fromCodePoint method (#3281)

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The algorithm is based on ECMA-262 v6, 21.1.2.2

JerryScript-DCO-1.0-Signed-off-by: Adam Szilagyi aszilagy@inf.u-szeged.hu
This commit is contained in:
Szilagyi Adam
2019-11-08 13:48:05 +01:00
committed by Robert Fancsik
parent e1fc90db0e
commit 35d9b1ab17
7 changed files with 172 additions and 1 deletions
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jerry-core/lit/lit-magic-strings.inc.h
+8 -1
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@@ -684,6 +684,11 @@ LIT_MAGIC_STRING_DEF (LIT_MAGIC_STRING_IS_EXTENSIBLE, "isExtensible")
#if ENABLED (JERRY_BUILTIN_DATE)
LIT_MAGIC_STRING_DEF (LIT_MAGIC_STRING_TO_DATE_STRING_UL, "toDateString")
LIT_MAGIC_STRING_DEF (LIT_MAGIC_STRING_TO_TIME_STRING_UL, "toTimeString")
#endif
#if ENABLED (JERRY_BUILTIN_STRING) && ENABLED (JERRY_ES2015_BUILTIN)
LIT_MAGIC_STRING_DEF (LIT_MAGIC_STRING_FROM_CODE_POINT_UL, "fromCodePoint")
#endif
#if ENABLED (JERRY_BUILTIN_DATE)
LIT_MAGIC_STRING_DEF (LIT_MAGIC_STRING_GET_UTC_MINUTES_UL, "getUTCMinutes")
LIT_MAGIC_STRING_DEF (LIT_MAGIC_STRING_GET_UTC_SECONDS_UL, "getUTCSeconds")
#endif
@@ -848,7 +853,9 @@ LIT_MAGIC_STRING_FIRST_STRING_WITH_SIZE (12, LIT_MAGIC_STRING_SET_ITERATOR_UL)
#else
LIT_MAGIC_STRING_FIRST_STRING_WITH_SIZE (12, LIT_MAGIC_STRING_CONFIGURABLE)
#endif
#if ENABLED (JERRY_BUILTIN_DATE)
#if ENABLED (JERRY_BUILTIN_STRING) && ENABLED (JERRY_ES2015_BUILTIN)
LIT_MAGIC_STRING_FIRST_STRING_WITH_SIZE (13, LIT_MAGIC_STRING_FROM_CODE_POINT_UL)
#elif ENABLED (JERRY_BUILTIN_DATE)
LIT_MAGIC_STRING_FIRST_STRING_WITH_SIZE (13, LIT_MAGIC_STRING_GET_UTC_MINUTES_UL)
#else
LIT_MAGIC_STRING_FIRST_STRING_WITH_SIZE (13, LIT_MAGIC_STRING_IS_PROTOTYPE_OF_UL)
jerry-core/lit/lit-magic-strings.ini
+1
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@@ -286,6 +286,7 @@ LIT_MAGIC_STRING_SET_ITERATOR_UL = "Set Iterator"
LIT_MAGIC_STRING_MAP_ITERATOR_UL = "Map Iterator"
LIT_MAGIC_STRING_CONFIGURABLE = "configurable"
LIT_MAGIC_STRING_FROM_CHAR_CODE_UL = "fromCharCode"
LIT_MAGIC_STRING_FROM_CODE_POINT_UL = "fromCodePoint"
LIT_MAGIC_STRING_IS_EXTENSIBLE = "isExtensible"
LIT_MAGIC_STRING_TO_DATE_STRING_UL = "toDateString"
LIT_MAGIC_STRING_TO_TIME_STRING_UL = "toTimeString"
jerry-core/lit/lit-strings.c
+23
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@@ -243,6 +243,29 @@ convert_code_point_to_high_surrogate (lit_code_point_t code_point) /**< code poi
return (LIT_UTF16_HIGH_SURROGATE_MARKER | code_unit_bits);
} /* convert_code_point_to_high_surrogate */
/**
* UTF16 Encoding method for a code point
*
* See also:
* ECMA-262 v6, 10.1.1
*
* @return uint8_t, the number of returning code points
*/
uint8_t
lit_utf16_encode_code_point (lit_code_point_t cp, /**< the code point we encode */
ecma_char_t *cu_p) /**< result of the encoding */
{
if (cp <= LIT_UTF16_CODE_UNIT_MAX)
{
cu_p[0] = (ecma_char_t) cp;
return 1;
}
cu_p[0] = convert_code_point_to_high_surrogate (cp);
cu_p[1] = convert_code_point_to_low_surrogate (cp);
return 2;
} /* lit_utf16_encode_code_point */
/**
* Calculate size of a zero-terminated utf-8 string
*
jerry-core/lit/lit-strings.h
+2
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@@ -123,6 +123,8 @@ lit_code_point_t lit_convert_surrogate_pair_to_code_point (ecma_char_t high_surr
bool lit_compare_utf8_strings_relational (const lit_utf8_byte_t *string1_p, lit_utf8_size_t string1_size,
const lit_utf8_byte_t *string2_p, lit_utf8_size_t string2_size);
uint8_t lit_utf16_encode_code_point (lit_code_point_t cp, ecma_char_t *cu_p);
/* read code point from buffer */
lit_utf8_size_t lit_read_code_point_from_utf8 (const lit_utf8_byte_t *buf_p, lit_utf8_size_t buf_size,
lit_code_point_t *code_point);