1package r
 2
 3import (
 4	. "github.com/alecthomas/chroma" // nolint
 5	"github.com/alecthomas/chroma/lexers/internal"
 6)
 7
 8// Ragel lexer.
 9var Ragel = internal.Register(MustNewLexer(
10	&Config{
11		Name:      "Ragel",
12		Aliases:   []string{"ragel"},
13		Filenames: []string{},
14		MimeTypes: []string{},
15	},
16	Rules{
17		"whitespace": {
18			{`\s+`, TextWhitespace, nil},
19		},
20		"comments": {
21			{`\#.*$`, Comment, nil},
22		},
23		"keywords": {
24			{`(access|action|alphtype)\b`, Keyword, nil},
25			{`(getkey|write|machine|include)\b`, Keyword, nil},
26			{`(any|ascii|extend|alpha|digit|alnum|lower|upper)\b`, Keyword, nil},
27			{`(xdigit|cntrl|graph|print|punct|space|zlen|empty)\b`, Keyword, nil},
28		},
29		"numbers": {
30			{`0x[0-9A-Fa-f]+`, LiteralNumberHex, nil},
31			{`[+-]?[0-9]+`, LiteralNumberInteger, nil},
32		},
33		"literals": {
34			{`"(\\\\|\\"|[^"])*"`, LiteralString, nil},
35			{`'(\\\\|\\'|[^'])*'`, LiteralString, nil},
36			{`\[(\\\\|\\\]|[^\]])*\]`, LiteralString, nil},
37			{`/(?!\*)(\\\\|\\/|[^/])*/`, LiteralStringRegex, nil},
38		},
39		"identifiers": {
40			{`[a-zA-Z_]\w*`, NameVariable, nil},
41		},
42		"operators": {
43			{`,`, Operator, nil},
44			{`\||&|--?`, Operator, nil},
45			{`\.|<:|:>>?`, Operator, nil},
46			{`:`, Operator, nil},
47			{`->`, Operator, nil},
48			{`(>|\$|%|<|@|<>)(/|eof\b)`, Operator, nil},
49			{`(>|\$|%|<|@|<>)(!|err\b)`, Operator, nil},
50			{`(>|\$|%|<|@|<>)(\^|lerr\b)`, Operator, nil},
51			{`(>|\$|%|<|@|<>)(~|to\b)`, Operator, nil},
52			{`(>|\$|%|<|@|<>)(\*|from\b)`, Operator, nil},
53			{`>|@|\$|%`, Operator, nil},
54			{`\*|\?|\+|\{[0-9]*,[0-9]*\}`, Operator, nil},
55			{`!|\^`, Operator, nil},
56			{`\(|\)`, Operator, nil},
57		},
58		"root": {
59			Include("literals"),
60			Include("whitespace"),
61			Include("comments"),
62			Include("keywords"),
63			Include("numbers"),
64			Include("identifiers"),
65			Include("operators"),
66			{`\{`, Punctuation, Push("host")},
67			{`=`, Operator, nil},
68			{`;`, Punctuation, nil},
69		},
70		"host": {
71			{`([^{}\'"/#]+|[^\\]\\[{}]|"(\\\\|\\"|[^"])*"|'(\\\\|\\'|[^'])*'|//.*$\n?|/\*(.|\n)*?\*/|\#.*$\n?|/(?!\*)(\\\\|\\/|[^/])*/|/)+`, Other, nil},
72			{`\{`, Punctuation, Push()},
73			{`\}`, Punctuation, Pop(1)},
74		},
75	},
76))