1package b
 2
 3import (
 4	. "github.com/alecthomas/chroma" // nolint
 5	"github.com/alecthomas/chroma/lexers/internal"
 6)
 7
 8// Brainfuck lexer.
 9var Brainfuck = internal.Register(MustNewLexer(
10	&Config{
11		Name:      "Brainfuck",
12		Aliases:   []string{"brainfuck", "bf"},
13		Filenames: []string{"*.bf", "*.b"},
14		MimeTypes: []string{"application/x-brainfuck"},
15	},
16	Rules{
17		"common": {
18			{`[.,]+`, NameTag, nil},
19			{`[+-]+`, NameBuiltin, nil},
20			{`[<>]+`, NameVariable, nil},
21			{`[^.,+\-<>\[\]]+`, Comment, nil},
22		},
23		"root": {
24			{`\[`, Keyword, Push("loop")},
25			{`\]`, Error, nil},
26			Include("common"),
27		},
28		"loop": {
29			{`\[`, Keyword, Push()},
30			{`\]`, Keyword, Pop(1)},
31			Include("common"),
32		},
33	},
34))