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| author | Akshay Nair <phenax5@gmail.com> | 2022-01-24 22:06:03 +0530 |
|---|---|---|
| committer | Akshay Nair <phenax5@gmail.com> | 2022-01-24 22:06:03 +0530 |
| commit | ea0baf1bb82d40ebfcaca1de6a2a0f6d56c709e7 (patch) | |
| tree | 8df0853d6f081bb730284bb2256c1b12ec43d62f /src/parser | |
| parent | f380df108a08bed22b92b9c5355d0b67168375be (diff) | |
| download | elxr-ea0baf1bb82d40ebfcaca1de6a2a0f6d56c709e7.tar.gz elxr-ea0baf1bb82d40ebfcaca1de6a2a0f6d56c709e7.zip | |
feat(parser): implements regex literal parser
Diffstat (limited to 'src/parser')
| -rw-r--r-- | src/parser/index.ts | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/src/parser/index.ts b/src/parser/index.ts index a336b83..7f0e945 100644 --- a/src/parser/index.ts +++ b/src/parser/index.ts @@ -129,9 +129,22 @@ const stringLiteral: Parser<Literal> = mapTo( s => Literal.String(s.join('')), ) +const REGEX_FLAGS = ['m', 'g', 'i', 'd', 's', 'u', 'y'] +const regexDelimiter = prefixed(optional(matchChar('\\')), matchChar('/')) +const regexLiteral: Parser<Literal> = mapTo( + prefixed( + regexDelimiter, + pair( + manyTill(satisfyChar(_ => true), regexDelimiter), + many0(satisfyChar(c => REGEX_FLAGS.includes(c))) + ), + ), + ([rs, flags]) => Literal.RegExp(new RegExp(rs.join(''), flags.join(''))), +) + const literalP: Parser<Literal> = delimited( whitespaces0, - or([booleanLiteral, numberLiteral, stringLiteral]), + or([booleanLiteral, numberLiteral, stringLiteral, regexLiteral]), whitespaces0, ) |