64 lines
2.6 KiB
Go
64 lines
2.6 KiB
Go
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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// Rexx lexer.
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var Rexx = internal.Register(MustNewLazyLexer(
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&Config{
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Name: "Rexx",
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Aliases: []string{"rexx", "arexx"},
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Filenames: []string{"*.rexx", "*.rex", "*.rx", "*.arexx"},
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MimeTypes: []string{"text/x-rexx"},
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NotMultiline: true,
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CaseInsensitive: true,
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},
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rexxRules,
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))
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func rexxRules() Rules {
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return Rules{
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"root": {
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{`\s`, TextWhitespace, nil},
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{`/\*`, CommentMultiline, Push("comment")},
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{`"`, LiteralString, Push("string_double")},
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{`'`, LiteralString, Push("string_single")},
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{`[0-9]+(\.[0-9]+)?(e[+-]?[0-9])?`, LiteralNumber, nil},
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{`([a-z_]\w*)(\s*)(:)(\s*)(procedure)\b`, ByGroups(NameFunction, TextWhitespace, Operator, TextWhitespace, KeywordDeclaration), nil},
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{`([a-z_]\w*)(\s*)(:)`, ByGroups(NameLabel, TextWhitespace, Operator), nil},
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Include("function"),
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Include("keyword"),
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Include("operator"),
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{`[a-z_]\w*`, Text, nil},
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},
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"function": {
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{Words(``, `(\s*)(\()`, `abbrev`, `abs`, `address`, `arg`, `b2x`, `bitand`, `bitor`, `bitxor`, `c2d`, `c2x`, `center`, `charin`, `charout`, `chars`, `compare`, `condition`, `copies`, `d2c`, `d2x`, `datatype`, `date`, `delstr`, `delword`, `digits`, `errortext`, `form`, `format`, `fuzz`, `insert`, `lastpos`, `left`, `length`, `linein`, `lineout`, `lines`, `max`, `min`, `overlay`, `pos`, `queued`, `random`, `reverse`, `right`, `sign`, `sourceline`, `space`, `stream`, `strip`, `substr`, `subword`, `symbol`, `time`, `trace`, `translate`, `trunc`, `value`, `verify`, `word`, `wordindex`, `wordlength`, `wordpos`, `words`, `x2b`, `x2c`, `x2d`, `xrange`), ByGroups(NameBuiltin, TextWhitespace, Operator), nil},
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},
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"keyword": {
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{`(address|arg|by|call|do|drop|else|end|exit|for|forever|if|interpret|iterate|leave|nop|numeric|off|on|options|parse|pull|push|queue|return|say|select|signal|to|then|trace|until|while)\b`, KeywordReserved, nil},
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},
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"operator": {
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{`(-|//|/|\(|\)|\*\*|\*|\\<<|\\<|\\==|\\=|\\>>|\\>|\\|\|\||\||&&|&|%|\+|<<=|<<|<=|<>|<|==|=|><|>=|>>=|>>|>|¬<<|¬<|¬==|¬=|¬>>|¬>|¬|\.|,)`, Operator, nil},
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},
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"string_double": {
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{`[^"\n]+`, LiteralString, nil},
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{`""`, LiteralString, nil},
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{`"`, LiteralString, Pop(1)},
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{`\n`, Text, Pop(1)},
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},
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"string_single": {
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{`[^\'\n]`, LiteralString, nil},
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{`\'\'`, LiteralString, nil},
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{`\'`, LiteralString, Pop(1)},
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{`\n`, Text, Pop(1)},
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},
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"comment": {
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{`[^*]+`, CommentMultiline, nil},
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{`\*/`, CommentMultiline, Pop(1)},
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{`\*`, CommentMultiline, nil},
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},
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}
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}
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