{
    "patterns": [
        { "regex": "\\/\\/.*", "is": "comment" },
        {
            "regex": "\\/\\*.*?\\*\\/",
            "flags": ["dotMatchesNewline"],
            "is": "comment"
        },
        { "regex": "'(\\\\'|[^'])'", "is": "string" },
        { "regex": "\"(\\\\\"|[^\"])*\"", "is": "string" },
        { "regex": "b'(\\\\'|[^'])'", "is": "string" },
        { "regex": "b\"(\\\\\"|[^\"])*\"", "is": "string" },
        { "regex": "r\"(\\\\\"|[^\"])*\"", "is": "string" },
        { "regex": "r#\"(\\\\\"|[^\"])*\"#", "is": "string" },
        { "regex": "r##\"(\\\\\"|[^\"])*\"##", "is": "string" },
        { "regex": "r###\"(\\\\\"|[^\"])*\"###", "is": "string" },
        { "regex": "0[bB][01_]+([uif](8|16|32|64|128))?", "is": "literal" },
        { "regex": "0[oO][0-7_]+([uif](8|16|32|64|128))?", "is": "literal" },
        {
            "regex": "0[xX][0-9a-fA-F_]+([uif](8|16|32|64|128))?",
            "is": "literal"
        },
        { "regex": "[0-9_]+n", "is": "literal" },
        { "regex": "[0-9_]+(\\.[0-9_]*([eE][-+]?[0-9_]+)?)?", "is": "literal" },
        { "regex": "[+=/*^%<>!~|&\\.?:@-]+", "is": "operator" },
        { "regex": "#!\\[", "is": "default" },
        {
            "regex": "[a-zA-Z_][a-zA-Z0-9_]*(\\()",
            "is": { "default": "function", "captures": ["default"] }
        },
        { "regex": "[a-zA-Z_][a-zA-Z0-9_]*!", "is": "function" },
        { "regex": "[A-Z_][a-zA-Z0-9_]*", "is": "keyword2" },
        {
            "regex": "union\\s+([a-zA-Z_][a-zA-Z0-9_]*)",
            "is": {
                "default": "keyword1",
                "captures": ["keyword2"]
            }
        },
        { "regex": "[a-zA-Z_][a-zA-Z0-9_]*", "is": "identifier" },
        { "regex": "'[a-zA-Z_][a-zA-Z0-9_]*", "is": "literal" }
    ],
    "keywords": {
        "_": { "into": "keyword1" },
        "as": { "into": "keyword1" },
        "async": { "into": "keyword1" },
        "await": { "into": "keyword1" },
        "break": { "into": "keyword1" },
        "const": { "into": "keyword1" },
        "continue": { "into": "keyword1" },
        "dyn": { "into": "keyword1" },
        "else": { "into": "keyword1" },
        "enum": { "into": "keyword1" },
        "extern": { "into": "keyword1" },
        "fn": { "into": "keyword1" },
        "for": { "into": "keyword1" },
        "if": { "into": "keyword1" },
        "impl": { "into": "keyword1" },
        "in": { "into": "keyword1" },
        "let": { "into": "keyword1" },
        "loop": { "into": "keyword1" },
        "macro_rules!": { "into": "keyword1" },
        "match": { "into": "keyword1" },
        "mod": { "into": "keyword1" },
        "move": { "into": "keyword1" },
        "mut": { "into": "keyword1" },
        "pub": { "into": "keyword1" },
        "ref": { "into": "keyword1" },
        "return": { "into": "keyword1" },
        "static": { "into": "keyword1" },
        "struct": { "into": "keyword1" },
        "trait": { "into": "keyword1" },
        "type": { "into": "keyword1" },
        "unsafe": { "into": "keyword1" },
        "use": { "into": "keyword1" },
        "where": { "into": "keyword1" },
        "while": { "into": "keyword1" },

        "crate": { "into": "keyword2" },
        "self": { "into": "keyword2" },
        "Self": { "into": "keyword2" },
        "super": { "into": "keyword2" },

        "bool": { "into": "keyword2" },
        "i8": { "into": "keyword2" },
        "i16": { "into": "keyword2" },
        "i32": { "into": "keyword2" },
        "i64": { "into": "keyword2" },
        "i128": { "into": "keyword2" },
        "isize": { "into": "keyword2" },
        "u8": { "into": "keyword2" },
        "u16": { "into": "keyword2" },
        "u32": { "into": "keyword2" },
        "u64": { "into": "keyword2" },
        "u128": { "into": "keyword2" },
        "usize": { "into": "keyword2" },
        "f32": { "into": "keyword2" },
        "f64": { "into": "keyword2" },
        "char": { "into": "keyword2" },
        "str": { "into": "keyword2" },

        "true": { "into": "literal" },
        "false": { "into": "literal" },

        "abstract": { "into": "error reserved-word" },
        "become": { "into": "error reserved-word" },
        "box": { "into": "error reserved-word" },
        "do": { "into": "error reserved-word" },
        "final": { "into": "error reserved-word" },
        "macro": { "into": "error reserved-word" },
        "override": { "into": "error reserved-word" },
        "priv": { "into": "error reserved-word" },
        "try": { "into": "error reserved-word" },
        "typeof": { "into": "error reserved-word" },
        "unsized": { "into": "error reserved-word" },
        "virtual": { "into": "error reserved-word" },
        "yield": { "into": "error reserved-word" }
    }
}