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(MustNewLazyLexer(
10	&Config{
11		Name:      "Ragel",
12		Aliases:   []string{"ragel"},
13		Filenames: []string{},
14		MimeTypes: []string{},
15	},
16	ragelRules,
17))
18
19func ragelRules() Rules {
20	return Rules{
21		"whitespace": {
22			{`\s+`, TextWhitespace, nil},
23		},
24		"comments": {
25			{`\#.*$`, Comment, nil},
26		},
27		"keywords": {
28			{`(access|action|alphtype)\b`, Keyword, nil},
29			{`(getkey|write|machine|include)\b`, Keyword, nil},
30			{`(any|ascii|extend|alpha|digit|alnum|lower|upper)\b`, Keyword, nil},
31			{`(xdigit|cntrl|graph|print|punct|space|zlen|empty)\b`, Keyword, nil},
32		},
33		"numbers": {
34			{`0x[0-9A-Fa-f]+`, LiteralNumberHex, nil},
35			{`[+-]?[0-9]+`, LiteralNumberInteger, nil},
36		},
37		"literals": {
38			{`"(\\\\|\\"|[^"])*"`, LiteralString, nil},
39			{`'(\\\\|\\'|[^'])*'`, LiteralString, nil},
40			{`\[(\\\\|\\\]|[^\]])*\]`, LiteralString, nil},
41			{`/(?!\*)(\\\\|\\/|[^/])*/`, LiteralStringRegex, nil},
42		},
43		"identifiers": {
44			{`[a-zA-Z_]\w*`, NameVariable, nil},
45		},
46		"operators": {
47			{`,`, Operator, nil},
48			{`\||&|--?`, Operator, nil},
49			{`\.|<:|:>>?`, Operator, nil},
50			{`:`, Operator, nil},
51			{`->`, Operator, nil},
52			{`(>|\$|%|<|@|<>)(/|eof\b)`, Operator, nil},
53			{`(>|\$|%|<|@|<>)(!|err\b)`, Operator, nil},
54			{`(>|\$|%|<|@|<>)(\^|lerr\b)`, Operator, nil},
55			{`(>|\$|%|<|@|<>)(~|to\b)`, Operator, nil},
56			{`(>|\$|%|<|@|<>)(\*|from\b)`, Operator, nil},
57			{`>|@|\$|%`, Operator, nil},
58			{`\*|\?|\+|\{[0-9]*,[0-9]*\}`, Operator, nil},
59			{`!|\^`, Operator, nil},
60			{`\(|\)`, Operator, nil},
61		},
62		"root": {
63			Include("literals"),
64			Include("whitespace"),
65			Include("comments"),
66			Include("keywords"),
67			Include("numbers"),
68			Include("identifiers"),
69			Include("operators"),
70			{`\{`, Punctuation, Push("host")},
71			{`=`, Operator, nil},
72			{`;`, Punctuation, nil},
73		},
74		"host": {
75			{`([^{}\'"/#]+|[^\\]\\[{}]|"(\\\\|\\"|[^"])*"|'(\\\\|\\'|[^'])*'|//.*$\n?|/\*(.|\n)*?\*/|\#.*$\n?|/(?!\*)(\\\\|\\/|[^/])*/|/)+`, Other, nil},
76			{`\{`, Punctuation, Push()},
77			{`\}`, Punctuation, Pop(1)},
78		},
79	}
80}
81