133 lines
6.2 KiB
Go
Vendored
133 lines
6.2 KiB
Go
Vendored
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(MustNewLazyLexer(
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&Config{
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Name: "Rust",
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Aliases: []string{"rust", "rs"},
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Filenames: []string{"*.rs", "*.rs.in"},
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MimeTypes: []string{"text/rust", "text/x-rust"},
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EnsureNL: true,
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},
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rustRules,
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))
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func rustRules() Rules {
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return 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`, `box`, `const`, `crate`, `dyn`, `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`, `do`, `final`, `macro`, `override`, `priv`, `typeof`, `try`, `unsized`, `virtual`, `yield`), KeywordReserved, nil},
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{`(true|false)\b`, KeywordConstant, nil},
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{`self\b`, NameBuiltinPseudo, 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`, `char`, `str`, `bool`), KeywordType, nil},
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{`[sS]elf\b`, NameBuiltinPseudo, nil},
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{Words(``, `\b`, `Copy`, `Send`, `Sized`, `Sync`, `Unpin`, `Drop`, `Fn`, `FnMut`, `FnOnce`, `drop`, `Box`, `ToOwned`, `Clone`, `PartialEq`, `PartialOrd`, `Eq`, `Ord`, `AsRef`, `AsMut`, `Into`, `From`, `Default`, `Iterator`, `Extend`, `IntoIterator`, `DoubleEndedIterator`, `ExactSizeIterator`, `Option`, `Some`, `None`, `Result`, `Ok`, `Err`, `String`, `ToString`, `Vec`), NameBuiltin, nil},
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{Words(``, `!`, `asm`, `assert`, `assert_eq`, `assert_ne`, `cfg`, `column`, `compile_error`, `concat`, `concat_idents`, `dbg`, `debug_assert`, `debug_assert_eq`, `debug_assert_ne`, `env`, `eprint`, `eprintln`, `file`, `format`, `format_args`, `format_args_nl`, `global_asm`, `include`, `include_bytes`, `include_str`, `is_aarch64_feature_detected`, `is_arm_feature_detected`, `is_mips64_feature_detected`, `is_mips_feature_detected`, `is_powerpc64_feature_detected`, `is_powerpc_feature_detected`, `is_x86_feature_detected`, `line`, `llvm_asm`, `log_syntax`, `macro_rules`, `matches`, `module_path`, `option_env`, `panic`, `print`, `println`, `stringify`, `thread_local`, `todo`, `trace_macros`, `unimplemented`, `unreachable`, `vec`, `write`, `writeln`), NameFunctionMagic, nil},
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{`::\b`, Text, nil},
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{`(?::|->)`, Text, Push("typename")},
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{`(break|continue)(\b\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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{`(?s)b?r(#*)".*?"\1`, LiteralString, nil},
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{`'`, Operator, Push("lifetime")},
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{`\.\.=?`, Operator, 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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{`r#[a-zA-Z_]\w*`, Name, nil},
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{`#!?\[`, CommentPreproc, Push("attribute[")},
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{`#`, Text, nil},
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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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{`'`, Operator, Push("lifetime")},
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{Words(``, `\b`, `Copy`, `Send`, `Sized`, `Sync`, `Unpin`, `Drop`, `Fn`, `FnMut`, `FnOnce`, `drop`, `Box`, `ToOwned`, `Clone`, `PartialEq`, `PartialOrd`, `Eq`, `Ord`, `AsRef`, `AsMut`, `Into`, `From`, `Default`, `Iterator`, `Extend`, `IntoIterator`, `DoubleEndedIterator`, `ExactSizeIterator`, `Option`, `Some`, `None`, `Result`, `Ok`, `Err`, `String`, `ToString`, `Vec`), NameBuiltin, nil},
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{Words(``, `\b`, `u8`, `u16`, `u32`, `u64`, `u128`, `i8`, `i16`, `i32`, `i64`, `i128`, `usize`, `isize`, `f32`, `f64`, `char`, `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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"lifetime": {
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{`(static|_)`, NameBuiltin, nil},
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{`[a-zA-Z_]+\w*`, NameAttribute, nil},
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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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"attribute_common": {
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{`"`, LiteralString, Push("string")},
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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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}
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}
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