rust/editors/code/rust.tmGrammar.json

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                        {
                            "include": "#lvariables"
                        },
                        {
                            "include": "#lifetimes"
                        },
                        {
                            "include": "#punctuation"
                        },
                        {
                            "include": "#types"
                        },
                        {
                            "include": "#variables"
                        }
                    ]
                },
                {
                    "comment": "primitive types",
                    "name": "entity.name.type.primitive.rust",
                    "match": "\\b(bool|char|str)\\b"
                },
                {
                    "comment": "trait declarations",
                    "match": "\\b(trait)\\s+([A-Z][A-Za-z0-9]*)\\b",
                    "captures": {
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                            "name": "storage.type.rust"
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                {
                    "comment": "struct declarations",
                    "match": "\\b(struct)\\s+([A-Z][A-Za-z0-9]*)\\b",
                    "captures": {
                        "1": {
                            "name": "storage.type.rust"
                        },
                        "2": {
                            "name": "entity.name.type.struct.rust"
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                {
                    "comment": "enum declarations",
                    "match": "\\b(enum)\\s+([A-Z][A-Za-z0-9_]*)\\b",
                    "captures": {
                        "1": {
                            "name": "storage.type.rust"
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                        "2": {
                            "name": "entity.name.type.enum.rust"
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                {
                    "comment": "type declarations",
                    "match": "\\b(type)\\s+([A-Z][A-Za-z0-9_]*)\\b",
                    "captures": {
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                            "name": "storage.type.rust"
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                        "2": {
                            "name": "entity.name.type.declaration.rust"
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                {
                    "comment": "types",
                    "name": "entity.name.type.rust",
                    "match": "\\b[A-Z][A-Za-z0-9]*\\b(?!!)"
                }
            ]
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                    "comment": "option types",
                    "name": "entity.name.type.option.rust",
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                {
                    "comment": "result types",
                    "name": "entity.name.type.result.rust",
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                {
                    "comment": "comma",
                    "name": "punctuation.comma.rust",
                    "match": ","
                },
                {
                    "comment": "curly braces",
                    "name": "punctuation.brackets.curly.rust",
                    "match": "[{}]"
                },
                {
                    "comment": "parentheses, round brackets",
                    "name": "punctuation.brackets.round.rust",
                    "match": "[()]"
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                {
                    "comment": "semicolon",
                    "name": "punctuation.semi.rust",
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                {
                    "comment": "square brackets",
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                    "match": "[\\[\\]]"
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                    "comment": "angle brackets",
                    "name": "punctuation.brackets.angle.rust",
                    "match": "(?<!=)[<>]"
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        "strings": {
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                {
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                    "end": "'",
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                {
                    "comment": "self",
                    "name": "variable.language.self.rust",
                    "match": "\\b[Ss]elf\\b"
                },
                {
                    "comment": "super",
                    "name": "variable.language.super.rust",
                    "match": "\\bsuper\\b"
                }
            ]
        },
        "variables": {
            "patterns": [
                {
                    "comment": "variables",
                    "name": "variable.other.rust",
                    "match": "\\b(?<!(?<!\\.)\\.)(?:r#(?!(crate|[Ss]elf|super)))?[a-z0-9_]+\\b"
                }
            ]
        }
    }
}