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Add support of escaping backslash and backtick to String.raw (#3736)

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Template literals already supports escaping backslash and backtick,
this commit enables escaping this in String.raw.
It also fixes invalid behaviour of String.raw when using
new line character.

JerryScript-DCO-1.0-Signed-off-by: Rafal Walczyna r.walczyna@samsung.com
This commit is contained in:
Rafal Walczyna
2020-05-20 13:26:01 +02:00
committed by GitHub
parent bbb5c9180e
commit a4659a888b
4 changed files with 53 additions and 1 deletions
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jerry-core/parser/js/js-lexer.c
+19
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@@ -998,6 +998,9 @@ lexer_parse_string (parser_context_t *context_p, /**< context */
else if (*source_p == LEXER_NEWLINE_LS_PS_BYTE_1 && LEXER_NEWLINE_LS_PS_BYTE_23 (source_p))
{
source_p += 3;
#if ENABLED (JERRY_ES2015)
length += 3 * raw_length_inc;
#endif /* ENABLED (JERRY_ES2015) */
line++;
column = 1;
continue;
@@ -1006,6 +1009,12 @@ lexer_parse_string (parser_context_t *context_p, /**< context */
#if ENABLED (JERRY_ES2015)
if (opts & LEXER_STRING_RAW)
{
if ((*source_p == LIT_CHAR_GRAVE_ACCENT) || (*source_p == LIT_CHAR_BACKSLASH))
{
source_p++;
column++;
length++;
}
continue;
}
#endif /* ENABLED (JERRY_ES2015) */
@@ -2281,6 +2290,16 @@ lexer_convert_literal_to_chars (parser_context_t *context_p, /**< context */
}
continue;
}
if ((*source_p == LIT_CHAR_BACKSLASH) && is_raw)
{
JERRY_ASSERT (source_p + 1 < context_p->source_end_p);
if ((*(source_p + 1) == LIT_CHAR_GRAVE_ACCENT) || (*(source_p + 1) == LIT_CHAR_BACKSLASH))
{
*destination_p++ = *source_p++;
*destination_p++ = *source_p++;
continue;
}
}
}
#endif /* ENABLED (JERRY_ES2015) */