59 lines
2.0 KiB
Go
59 lines
2.0 KiB
Go
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package lexers
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import (
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. "github.com/alecthomas/chroma" // nolint
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)
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// Elm lexer.
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var Elm = Register(MustNewLexer(
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&Config{
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Name: "Elm",
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Aliases: []string{"elm"},
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Filenames: []string{"*.elm"},
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MimeTypes: []string{"text/x-elm"},
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},
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Rules{
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"root": {
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{`\{-`, CommentMultiline, Push("comment")},
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{`--.*`, CommentSingle, nil},
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{`\s+`, Text, nil},
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{`"`, LiteralString, Push("doublequote")},
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{`^\s*module\s*`, KeywordNamespace, Push("imports")},
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{`^\s*import\s*`, KeywordNamespace, Push("imports")},
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{`\[glsl\|.*`, NameEntity, Push("shader")},
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{Words(``, `\b`, `alias`, `as`, `case`, `else`, `if`, `import`, `in`, `let`, `module`, `of`, `port`, `then`, `type`, `where`), KeywordReserved, nil},
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{`[A-Z]\w*`, KeywordType, nil},
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{`^main `, KeywordReserved, nil},
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{Words(`\(`, `\)`, `~`, `||`, `|>`, `|`, "`", `^`, `\`, `'`, `>>`, `>=`, `>`, `==`, `=`, `<~`, `<|`, `<=`, `<<`, `<-`, `<`, `::`, `:`, `/=`, `//`, `/`, `..`, `.`, `->`, `-`, `++`, `+`, `*`, `&&`, `%`), NameFunction, nil},
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{Words(``, ``, `~`, `||`, `|>`, `|`, "`", `^`, `\`, `'`, `>>`, `>=`, `>`, `==`, `=`, `<~`, `<|`, `<=`, `<<`, `<-`, `<`, `::`, `:`, `/=`, `//`, `/`, `..`, `.`, `->`, `-`, `++`, `+`, `*`, `&&`, `%`), NameFunction, nil},
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Include("numbers"),
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{`[a-z_][a-zA-Z_\']*`, NameVariable, nil},
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{`[,()\[\]{}]`, Punctuation, nil},
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},
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"comment": {
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{`-(?!\})`, CommentMultiline, nil},
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{`\{-`, CommentMultiline, Push("comment")},
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{`[^-}]`, CommentMultiline, nil},
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{`-\}`, CommentMultiline, Pop(1)},
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},
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"doublequote": {
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{`\\u[0-9a-fA-F]{4}`, LiteralStringEscape, nil},
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{`\\[nrfvb\\"]`, LiteralStringEscape, nil},
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{`[^"]`, LiteralString, nil},
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{`"`, LiteralString, Pop(1)},
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},
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"imports": {
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{`\w+(\.\w+)*`, NameClass, Pop(1)},
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},
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"numbers": {
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{`_?\d+\.(?=\d+)`, LiteralNumberFloat, nil},
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{`_?\d+`, LiteralNumberInteger, nil},
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},
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"shader": {
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{`\|(?!\])`, NameEntity, nil},
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{`\|\]`, NameEntity, Pop(1)},
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{`.*\n`, NameEntity, nil},
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},
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},
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))
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