49 lines
1.5 KiB
Go
49 lines
1.5 KiB
Go
package s
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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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// Snobol lexer.
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var Snobol = internal.Register(MustNewLexer(
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&Config{
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Name: "Snobol",
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Aliases: []string{"snobol"},
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Filenames: []string{"*.snobol"},
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MimeTypes: []string{"text/x-snobol"},
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},
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Rules{
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"root": {
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{`\*.*\n`, Comment, nil},
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{`[+.] `, Punctuation, Push("statement")},
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{`-.*\n`, Comment, nil},
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{`END\s*\n`, NameLabel, Push("heredoc")},
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{`[A-Za-z$][\w$]*`, NameLabel, Push("statement")},
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{`\s+`, Text, Push("statement")},
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},
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"statement": {
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{`\s*\n`, Text, Pop(1)},
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{`\s+`, Text, nil},
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{`(?<=[^\w.])(LT|LE|EQ|NE|GE|GT|INTEGER|IDENT|DIFFER|LGT|SIZE|REPLACE|TRIM|DUPL|REMDR|DATE|TIME|EVAL|APPLY|OPSYN|LOAD|UNLOAD|LEN|SPAN|BREAK|ANY|NOTANY|TAB|RTAB|REM|POS|RPOS|FAIL|FENCE|ABORT|ARB|ARBNO|BAL|SUCCEED|INPUT|OUTPUT|TERMINAL)(?=[^\w.])`, NameBuiltin, nil},
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{`[A-Za-z][\w.]*`, Name, nil},
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{`\*\*|[?$.!%*/#+\-@|&\\=]`, Operator, nil},
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{`"[^"]*"`, LiteralString, nil},
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{`'[^']*'`, LiteralString, nil},
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{`[0-9]+(?=[^.EeDd])`, LiteralNumberInteger, nil},
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{`[0-9]+(\.[0-9]*)?([EDed][-+]?[0-9]+)?`, LiteralNumberFloat, nil},
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{`:`, Punctuation, Push("goto")},
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{`[()<>,;]`, Punctuation, nil},
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},
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"goto": {
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{`\s*\n`, Text, Pop(2)},
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{`\s+`, Text, nil},
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{`F|S`, Keyword, nil},
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{`(\()([A-Za-z][\w.]*)(\))`, ByGroups(Punctuation, NameLabel, Punctuation), nil},
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},
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"heredoc": {
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{`.*\n`, LiteralStringHeredoc, nil},
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},
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},
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))
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