/usr/share/gocode/src/github.com/alecthomas/chroma/lexers/l/lua.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 | package l
import (
. "github.com/alecthomas/chroma" // nolint
"github.com/alecthomas/chroma/lexers/internal"
)
// Lua lexer.
var Lua = internal.Register(MustNewLexer(
&Config{
Name: "Lua",
Aliases: []string{"lua"},
Filenames: []string{"*.lua", "*.wlua"},
MimeTypes: []string{"text/x-lua", "application/x-lua"},
},
Rules{
"root": {
{`#!.*`, CommentPreproc, nil},
Default(Push("base")),
},
"ws": {
{`(?:--\[(=*)\[[\w\W]*?\](\1)\])`, CommentMultiline, nil},
{`(?:--.*$)`, CommentSingle, nil},
{`(?:\s+)`, Text, nil},
},
"base": {
Include("ws"),
{`(?i)0x[\da-f]*(\.[\da-f]*)?(p[+-]?\d+)?`, LiteralNumberHex, nil},
{`(?i)(\d*\.\d+|\d+\.\d*)(e[+-]?\d+)?`, LiteralNumberFloat, nil},
{`(?i)\d+e[+-]?\d+`, LiteralNumberFloat, nil},
{`\d+`, LiteralNumberInteger, nil},
{`(?s)\[(=*)\[.*?\]\1\]`, LiteralString, nil},
{`::`, Punctuation, Push("label")},
{`\.{3}`, Punctuation, nil},
{`[=<>|~&+\-*/%#^]+|\.\.`, Operator, nil},
{`[\[\]{}().,:;]`, Punctuation, nil},
{`(and|or|not)\b`, OperatorWord, nil},
{`(break|do|else|elseif|end|for|if|in|repeat|return|then|until|while)\b`, KeywordReserved, nil},
{`goto\b`, KeywordReserved, Push("goto")},
{`(local)\b`, KeywordDeclaration, nil},
{`(true|false|nil)\b`, KeywordConstant, nil},
{`(function)\b`, KeywordReserved, Push("funcname")},
{`[A-Za-z_]\w*(\.[A-Za-z_]\w*)?`, Name, nil},
{`'`, LiteralStringSingle, Combined("stringescape", "sqs")},
{`"`, LiteralStringDouble, Combined("stringescape", "dqs")},
},
"funcname": {
Include("ws"),
{`[.:]`, Punctuation, nil},
{`(?:[^\W\d]\w*)(?=(?:(?:--\[(=*)\[[\w\W]*?\](\2)\])|(?:--.*$)|(?:\s+))*[.:])`, NameClass, nil},
{`(?:[^\W\d]\w*)`, NameFunction, Pop(1)},
{`\(`, Punctuation, Pop(1)},
},
"goto": {
Include("ws"),
{`(?:[^\W\d]\w*)`, NameLabel, Pop(1)},
},
"label": {
Include("ws"),
{`::`, Punctuation, Pop(1)},
{`(?:[^\W\d]\w*)`, NameLabel, nil},
},
"stringescape": {
{`\\([abfnrtv\\"\']|[\r\n]{1,2}|z\s*|x[0-9a-fA-F]{2}|\d{1,3}|u\{[0-9a-fA-F]+\})`, LiteralStringEscape, nil},
},
"sqs": {
{`'`, LiteralStringSingle, Pop(1)},
{`[^\\']+`, LiteralStringSingle, nil},
},
"dqs": {
{`"`, LiteralStringDouble, Pop(1)},
{`[^\\"]+`, LiteralStringDouble, nil},
},
},
))
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