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136 lines
5.7 KiB
136 lines
5.7 KiB
package r
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import (
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. "github.com/alecthomas/chroma" // nolint
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"github.com/alecthomas/chroma/lexers/internal"
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)
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// Rust lexer.
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var Rust = internal.Register(MustNewLexer(
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&Config{
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Name: "Rust",
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Aliases: []string{"rust"},
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Filenames: []string{"*.rs", "*.rs.in"},
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MimeTypes: []string{"text/rust"},
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EnsureNL: true,
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},
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Rules{
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"root": {
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{`#![^[\r\n].*$`, CommentPreproc, nil},
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Default(Push("base")),
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},
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"base": {
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{`\n`, TextWhitespace, nil},
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{`\s+`, TextWhitespace, nil},
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{`//!.*?\n`, LiteralStringDoc, nil},
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{`///(\n|[^/].*?\n)`, LiteralStringDoc, nil},
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{`//(.*?)\n`, CommentSingle, nil},
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{`/\*\*(\n|[^/*])`, LiteralStringDoc, Push("doccomment")},
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{`/\*!`, LiteralStringDoc, Push("doccomment")},
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{`/\*`, CommentMultiline, Push("comment")},
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{`r#*"(?:\\.|[^\\;])*"#*`, LiteralString, nil},
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{`"(?:\\.|[^\\"])*"`, LiteralString, nil},
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{`\$([a-zA-Z_]\w*|\(,?|\),?|,?)`, CommentPreproc, nil},
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{Words(``, `\b`, `as`, `async`, `await`, `const`, `crate`, `else`, `extern`, `for`, `if`, `impl`, `in`, `loop`, `match`, `move`, `mut`, `pub`, `ref`, `return`, `static`, `super`, `trait`, `unsafe`, `use`, `where`, `while`), Keyword, nil},
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{Words(``, `\b`, `abstract`, `become`, `box`, `do`, `final`, `macro`, `override`, `priv`, `try`, `typeof`, `unsized`, `virtual`, `yield`), KeywordReserved, nil},
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{`(true|false)\b`, KeywordConstant, nil},
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{`mod\b`, Keyword, Push("modname")},
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{`let\b`, KeywordDeclaration, nil},
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{`fn\b`, Keyword, Push("funcname")},
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{`(struct|enum|type|union)\b`, Keyword, Push("typename")},
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{`(default)(\s+)(type|fn)\b`, ByGroups(Keyword, Text, Keyword), nil},
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{Words(``, `\b`, `u8`, `u16`, `u32`, `u64`, `u128`, `i8`, `i16`, `i32`, `i64`, `i128`, `usize`, `isize`, `f32`, `f64`, `str`, `bool`), KeywordType, nil},
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{`self\b`, NameBuiltinPseudo, nil},
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{Words(``, `\b`, `Copy`, `Send`, `Sized`, `Sync`, `Drop`, `Fn`, `FnMut`, `FnOnce`, `Box`, `ToOwned`, `Clone`, `PartialEq`, `PartialOrd`, `Eq`, `Ord`, `AsRef`, `AsMut`, `Into`, `From`, `Default`, `Iterator`, `Extend`, `IntoIterator`, `DoubleEndedIterator`, `ExactSizeIterator`, `Option`, `Some`, `None`, `Result`, `Ok`, `Err`, `SliceConcatExt`, `String`, `ToString`, `Vec`), NameBuiltin, nil},
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{`::\b`, Text, nil},
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{`(?::|->)`, Text, Push("typename")},
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{`(break|continue)(\s*)(\'[A-Za-z_]\w*)?`, ByGroups(Keyword, TextWhitespace, NameLabel), nil},
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{`'(\\['"\\nrt]|\\x[0-7][0-9a-fA-F]|\\0|\\u\{[0-9a-fA-F]{1,6}\}|.)'`, LiteralStringChar, nil},
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{`b'(\\['"\\nrt]|\\x[0-9a-fA-F]{2}|\\0|\\u\{[0-9a-fA-F]{1,6}\}|.)'`, LiteralStringChar, nil},
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{`0b[01_]+`, LiteralNumberBin, Push("number_lit")},
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{`0o[0-7_]+`, LiteralNumberOct, Push("number_lit")},
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{`0[xX][0-9a-fA-F_]+`, LiteralNumberHex, Push("number_lit")},
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{`[0-9][0-9_]*(\.[0-9_]+[eE][+\-]?[0-9_]+|\.[0-9_]*(?!\.)|[eE][+\-]?[0-9_]+)`, LiteralNumberFloat, Push("number_lit")},
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{`[0-9][0-9_]*`, LiteralNumberInteger, Push("number_lit")},
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{`b"`, LiteralString, Push("bytestring")},
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{`b?r(#*)".*?"\1`, LiteralString, nil},
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{`'static`, NameBuiltin, nil},
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{`'[a-zA-Z_]\w*`, NameAttribute, nil},
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{`[{}()\[\],.;]`, Punctuation, nil},
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{`[+\-*/%&|<>^!~@=:?]`, Operator, nil},
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{`(r#)?[a-zA-Z_]\w*`, Name, nil},
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{`#!?\[`, CommentPreproc, Push("attribute[")},
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{`([A-Za-z_]\w*)(!)(\s*)([A-Za-z_]\w*)?(\s*)(\{)`, ByGroups(CommentPreproc, Punctuation, TextWhitespace, Name, TextWhitespace, Punctuation), Push("macro{")},
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{`([A-Za-z_]\w*)(!)(\s*)([A-Za-z_]\w*)?(\()`, ByGroups(CommentPreproc, Punctuation, TextWhitespace, Name, Punctuation), Push("macro(")},
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},
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"comment": {
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{`[^*/]+`, CommentMultiline, nil},
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{`/\*`, CommentMultiline, Push()},
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{`\*/`, CommentMultiline, Pop(1)},
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{`[*/]`, CommentMultiline, nil},
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},
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"doccomment": {
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{`[^*/]+`, LiteralStringDoc, nil},
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{`/\*`, LiteralStringDoc, Push()},
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{`\*/`, LiteralStringDoc, Pop(1)},
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{`[*/]`, LiteralStringDoc, nil},
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},
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"modname": {
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{`\s+`, Text, nil},
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{`[a-zA-Z_]\w*`, NameNamespace, Pop(1)},
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Default(Pop(1)),
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},
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"funcname": {
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{`\s+`, Text, nil},
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{`[a-zA-Z_]\w*`, NameFunction, Pop(1)},
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Default(Pop(1)),
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},
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"typename": {
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{`\s+`, Text, nil},
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{`&`, KeywordPseudo, nil},
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{Words(``, `\b`, `Copy`, `Send`, `Sized`, `Sync`, `Drop`, `Fn`, `FnMut`, `FnOnce`, `Box`, `ToOwned`, `Clone`, `PartialEq`, `PartialOrd`, `Eq`, `Ord`, `AsRef`, `AsMut`, `Into`, `From`, `Default`, `Iterator`, `Extend`, `IntoIterator`, `DoubleEndedIterator`, `ExactSizeIterator`, `Option`, `Some`, `None`, `Result`, `Ok`, `Err`, `SliceConcatExt`, `String`, `ToString`, `Vec`), NameBuiltin, nil},
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{Words(``, `\b`, `u8`, `u16`, `u32`, `u64`, `i8`, `i16`, `i32`, `i64`, `usize`, `isize`, `f32`, `f64`, `str`, `bool`), KeywordType, nil},
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{`[a-zA-Z_]\w*`, NameClass, Pop(1)},
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Default(Pop(1)),
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},
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"number_lit": {
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{`[ui](8|16|32|64|size)`, Keyword, Pop(1)},
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{`f(32|64)`, Keyword, Pop(1)},
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Default(Pop(1)),
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},
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"string": {
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{`"`, LiteralString, Pop(1)},
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{`\\['"\\nrt]|\\x[0-7][0-9a-fA-F]|\\0|\\u\{[0-9a-fA-F]{1,6}\}`, LiteralStringEscape, nil},
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{`[^\\"]+`, LiteralString, nil},
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{`\\`, LiteralString, nil},
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},
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"bytestring": {
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{`\\x[89a-fA-F][0-9a-fA-F]`, LiteralStringEscape, nil},
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Include("string"),
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},
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"macro{": {
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{`\{`, Operator, Push()},
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{`\}`, Operator, Pop(1)},
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},
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"macro(": {
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{`\(`, Operator, Push()},
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{`\)`, Operator, Pop(1)},
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},
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"attribute_common": {
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{`"`, LiteralString, Push("string")},
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{`\[`, CommentPreproc, Push("attribute[")},
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{`\(`, CommentPreproc, Push("attribute(")},
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},
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"attribute[": {
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Include("attribute_common"),
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{`\];?`, CommentPreproc, Pop(1)},
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{`[^"\]]+`, CommentPreproc, nil},
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},
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"attribute(": {
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Include("attribute_common"),
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{`\);?`, CommentPreproc, Pop(1)},
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{`[^")]+`, CommentPreproc, nil},
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},
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},
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))
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