/usr/share/gocode/src/github.com/alecthomas/chroma/lexers/r/rust.go is in golang-github-alecthomas-chroma-dev 0.4.0+git20180402.51d250f-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 | package r
import (
. "github.com/alecthomas/chroma" // nolint
"github.com/alecthomas/chroma/lexers/internal"
)
// Rust lexer.
var Rust = internal.Register(MustNewLexer(
&Config{
Name: "Rust",
Aliases: []string{"rust"},
Filenames: []string{"*.rs", "*.rs.in"},
MimeTypes: []string{"text/rust"},
},
Rules{
"root": {
{`#![^[\r\n].*$`, CommentPreproc, nil},
Default(Push("base")),
},
"base": {
{`\n`, TextWhitespace, nil},
{`\s+`, TextWhitespace, nil},
{`//!.*?\n`, LiteralStringDoc, nil},
{`///(\n|[^/].*?\n)`, LiteralStringDoc, nil},
{`//(.*?)\n`, CommentSingle, nil},
{`/\*\*(\n|[^/*])`, LiteralStringDoc, Push("doccomment")},
{`/\*!`, LiteralStringDoc, Push("doccomment")},
{`/\*`, CommentMultiline, Push("comment")},
{`\$([a-zA-Z_]\w*|\(,?|\),?|,?)`, CommentPreproc, nil},
{Words(``, `\b`, `as`, `box`, `const`, `crate`, `else`, `extern`, `for`, `if`, `impl`, `in`, `loop`, `match`, `move`, `mut`, `pub`, `ref`, `return`, `static`, `super`, `trait`, `unsafe`, `use`, `where`, `while`), Keyword, nil},
{Words(``, `\b`, `abstract`, `alignof`, `become`, `do`, `final`, `macro`, `offsetof`, `override`, `priv`, `proc`, `pure`, `sizeof`, `typeof`, `unsized`, `virtual`, `yield`), KeywordReserved, nil},
{`(true|false)\b`, KeywordConstant, nil},
{`mod\b`, Keyword, Push("modname")},
{`let\b`, KeywordDeclaration, nil},
{`fn\b`, Keyword, Push("funcname")},
{`(struct|enum|type|union)\b`, Keyword, Push("typename")},
{`(default)(\s+)(type|fn)\b`, ByGroups(Keyword, Text, Keyword), nil},
{Words(``, `\b`, `u8`, `u16`, `u32`, `u64`, `i8`, `i16`, `i32`, `i64`, `usize`, `isize`, `f32`, `f64`, `str`, `bool`), KeywordType, nil},
{`self\b`, NameBuiltinPseudo, nil},
{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},
{`::\b`, Text, nil},
{`(?::|->)`, Text, Push("typename")},
{`(break|continue)(\s*)(\'[A-Za-z_]\w*)?`, ByGroups(Keyword, TextWhitespace, NameLabel), nil},
{`'(\\['"\\nrt]|\\x[0-7][0-9a-fA-F]|\\0|\\u\{[0-9a-fA-F]{1,6}\}|.)'`, LiteralStringChar, nil},
{`b'(\\['"\\nrt]|\\x[0-9a-fA-F]{2}|\\0|\\u\{[0-9a-fA-F]{1,6}\}|.)'`, LiteralStringChar, nil},
{`0b[01_]+`, LiteralNumberBin, Push("number_lit")},
{`0o[0-7_]+`, LiteralNumberOct, Push("number_lit")},
{`0[xX][0-9a-fA-F_]+`, LiteralNumberHex, Push("number_lit")},
{`[0-9][0-9_]*(\.[0-9_]+[eE][+\-]?[0-9_]+|\.[0-9_]*(?!\.)|[eE][+\-]?[0-9_]+)`, LiteralNumberFloat, Push("number_lit")},
{`[0-9][0-9_]*`, LiteralNumberInteger, Push("number_lit")},
{`b"`, LiteralString, Push("bytestring")},
{`"`, LiteralString, Push("string")},
{`b?r(#*)".*?"\1`, LiteralString, nil},
{`'static`, NameBuiltin, nil},
{`'[a-zA-Z_]\w*`, NameAttribute, nil},
{`[{}()\[\],.;]`, Punctuation, nil},
{`[+\-*/%&|<>^!~@=:?]`, Operator, nil},
{`[a-zA-Z_]\w*`, Name, nil},
{`#!?\[`, CommentPreproc, Push("attribute[")},
{`([A-Za-z_]\w*)(!)(\s*)([A-Za-z_]\w*)?(\s*)(\{)`, ByGroups(CommentPreproc, Punctuation, TextWhitespace, Name, TextWhitespace, Punctuation), Push("macro{")},
{`([A-Za-z_]\w*)(!)(\s*)([A-Za-z_]\w*)?(\()`, ByGroups(CommentPreproc, Punctuation, TextWhitespace, Name, Punctuation), Push("macro(")},
},
"comment": {
{`[^*/]+`, CommentMultiline, nil},
{`/\*`, CommentMultiline, Push()},
{`\*/`, CommentMultiline, Pop(1)},
{`[*/]`, CommentMultiline, nil},
},
"doccomment": {
{`[^*/]+`, LiteralStringDoc, nil},
{`/\*`, LiteralStringDoc, Push()},
{`\*/`, LiteralStringDoc, Pop(1)},
{`[*/]`, LiteralStringDoc, nil},
},
"modname": {
{`\s+`, Text, nil},
{`[a-zA-Z_]\w*`, NameNamespace, Pop(1)},
Default(Pop(1)),
},
"funcname": {
{`\s+`, Text, nil},
{`[a-zA-Z_]\w*`, NameFunction, Pop(1)},
Default(Pop(1)),
},
"typename": {
{`\s+`, Text, nil},
{`&`, KeywordPseudo, nil},
{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},
{Words(``, `\b`, `u8`, `u16`, `u32`, `u64`, `i8`, `i16`, `i32`, `i64`, `usize`, `isize`, `f32`, `f64`, `str`, `bool`), KeywordType, nil},
{`[a-zA-Z_]\w*`, NameClass, Pop(1)},
Default(Pop(1)),
},
"number_lit": {
{`[ui](8|16|32|64|size)`, Keyword, Pop(1)},
{`f(32|64)`, Keyword, Pop(1)},
Default(Pop(1)),
},
"string": {
{`"`, LiteralString, Pop(1)},
{`\\['"\\nrt]|\\x[0-7][0-9a-fA-F]|\\0|\\u\{[0-9a-fA-F]{1,6}\}`, LiteralStringEscape, nil},
{`[^\\"]+`, LiteralString, nil},
{`\\`, LiteralString, nil},
},
"bytestring": {
{`\\x[89a-fA-F][0-9a-fA-F]`, LiteralStringEscape, nil},
Include("string"),
},
"macro{": {
{`\{`, Operator, Push()},
{`\}`, Operator, Pop(1)},
},
"macro(": {
{`\(`, Operator, Push()},
{`\)`, Operator, Pop(1)},
},
"attribute_common": {
{`"`, LiteralString, Push("string")},
{`\[`, CommentPreproc, Push("attribute[")},
{`\(`, CommentPreproc, Push("attribute(")},
},
"attribute[": {
Include("attribute_common"),
{`\];?`, CommentPreproc, Pop(1)},
{`[^"\]]+`, CommentPreproc, nil},
},
"attribute(": {
Include("attribute_common"),
{`\);?`, CommentPreproc, Pop(1)},
{`[^")]+`, CommentPreproc, nil},
},
},
))
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