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77 lines
2.1 KiB
77 lines
2.1 KiB
4 years ago
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package r
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import (
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. "github.com/alecthomas/chroma" // nolint
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"github.com/alecthomas/chroma/lexers/internal"
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)
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// Ragel lexer.
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var Ragel = internal.Register(MustNewLexer(
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&Config{
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Name: "Ragel",
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Aliases: []string{"ragel"},
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Filenames: []string{},
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MimeTypes: []string{},
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},
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Rules{
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"whitespace": {
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{`\s+`, TextWhitespace, nil},
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},
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"comments": {
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{`\#.*$`, Comment, nil},
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},
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"keywords": {
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{`(access|action|alphtype)\b`, Keyword, nil},
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{`(getkey|write|machine|include)\b`, Keyword, nil},
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{`(any|ascii|extend|alpha|digit|alnum|lower|upper)\b`, Keyword, nil},
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{`(xdigit|cntrl|graph|print|punct|space|zlen|empty)\b`, Keyword, nil},
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},
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"numbers": {
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{`0x[0-9A-Fa-f]+`, LiteralNumberHex, nil},
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{`[+-]?[0-9]+`, LiteralNumberInteger, nil},
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},
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"literals": {
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{`"(\\\\|\\"|[^"])*"`, LiteralString, nil},
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{`'(\\\\|\\'|[^'])*'`, LiteralString, nil},
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{`\[(\\\\|\\\]|[^\]])*\]`, LiteralString, nil},
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{`/(?!\*)(\\\\|\\/|[^/])*/`, LiteralStringRegex, nil},
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},
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"identifiers": {
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{`[a-zA-Z_]\w*`, NameVariable, nil},
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},
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"operators": {
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{`,`, Operator, nil},
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{`\||&|--?`, Operator, nil},
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{`\.|<:|:>>?`, Operator, nil},
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{`:`, Operator, nil},
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{`->`, Operator, nil},
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{`(>|\$|%|<|@|<>)(/|eof\b)`, Operator, nil},
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{`(>|\$|%|<|@|<>)(!|err\b)`, Operator, nil},
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{`(>|\$|%|<|@|<>)(\^|lerr\b)`, Operator, nil},
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{`(>|\$|%|<|@|<>)(~|to\b)`, Operator, nil},
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{`(>|\$|%|<|@|<>)(\*|from\b)`, Operator, nil},
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{`>|@|\$|%`, Operator, nil},
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{`\*|\?|\+|\{[0-9]*,[0-9]*\}`, Operator, nil},
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{`!|\^`, Operator, nil},
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{`\(|\)`, Operator, nil},
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},
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"root": {
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Include("literals"),
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Include("whitespace"),
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Include("comments"),
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Include("keywords"),
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Include("numbers"),
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Include("identifiers"),
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Include("operators"),
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{`\{`, Punctuation, Push("host")},
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{`=`, Operator, nil},
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{`;`, Punctuation, nil},
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},
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"host": {
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{`([^{}\'"/#]+|[^\\]\\[{}]|"(\\\\|\\"|[^"])*"|'(\\\\|\\'|[^'])*'|//.*$\n?|/\*(.|\n)*?\*/|\#.*$\n?|/(?!\*)(\\\\|\\/|[^/])*/|/)+`, Other, nil},
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{`\{`, Punctuation, Push()},
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{`\}`, Punctuation, Pop(1)},
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},
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},
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))
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