nushell / nushell/new-nu-parser

Lexing error of string interpolation

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Dominant language
Rust
Stars
34
Forks
11
PR merge metrics
No merged PRs in 30d

Description

$"(')')"

Token3 0: DqStringInterpStart span: 0 .. 2 '$"'
Token3 1: StrInterpLParen span: 2 .. 3 '('
Token3 2: Eof span: 9 .. 9 ''
Lexing error. Error: Spanned { item: Generic, span: Span { start: 3, end: 4 } }, '''

$"("foo")"

Token3 0: DqStringInterpStart span: 0 .. 2 '$"'
Token3 1: Eof span: 11 .. 11 ''
Lexing error. Error: Spanned { item: UnmatchedStrInterpLParen, span: Span { start: 2, end: 3 } }, '('

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  3. Fork the repository and make your change on a branch.
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Research direction

Start by reproducing both interpolation examples through the lexer and inspect the string-interpolation handling that produces the shown tokens and errors. Determine the expected tokenization for nested parentheses and quoted text, then add or update lexer coverage so both examples handle their delimiters consistently without a lexing error.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
compilers
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
42/100

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