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Restrict idents from looking like raw strings. Closes #200, closes #204, closes #241

This commit is contained in:
Tab Atkins-Bittner 2023-10-06 14:32:01 -07:00
parent 568c096465
commit 0836df1c19
2 changed files with 5 additions and 1 deletions
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1
CHANGELOG.md
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@ -8,6 +8,7 @@
* Single line comments (`//`) can now be immediately followed by a newline.
* All literal whitespace following a `\` in a string is now discarded.
* Vertical tabs (`U+000B`) are now considered to be whitespace.
* Identifiers can't start with `r#`, so they're easy to distinguish from raw strings. (They already similarly can't start with a digit, or a sign+digit, so they're easy to distinguish from numbers.)
### KQL

5
SPEC.md
View File

@ -482,7 +482,10 @@ node-space := ws* escline ws* | ws+
node-terminator := single-line-comment | newline | ';' | eof
identifier := string | bare-identifier
bare-identifier := ((identifier-char - digit - sign) identifier-char* | sign ((identifier-char - digit) identifier-char*)?) - keyword
bare-identifier := (unambiguous-ident | numberish-ident | stringish-ident) - keyword
unambiguous-ident := (identifier-char - digit - sign - "r") identifier-char*
numberish-ident := sign ((identifier-char - digit) identifier-char*)?
stringish-ident := "r" ((identifier-char - "#") identifier-char*)?
identifier-char := unicode - linespace - [\/(){}<>;[]=,"]
keyword := boolean | 'null'
prop := identifier '=' value