47 lines
622 B
Go
47 lines
622 B
Go
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package wavefront
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type Token int
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const (
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// Special tokens
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Illegal Token = iota
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EOF
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Ws
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// Literals
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literalBeg
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Letter // metric name, source/point tags
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Number
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MinusSign
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Underscore
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Dot
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Slash
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Backslash
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Comma
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Delta
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literalEnd
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// Misc characters
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Quotes
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Equals
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Newline
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)
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func isWhitespace(ch rune) bool {
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return ch == ' ' || ch == '\t' || ch == '\n'
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}
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func isLetter(ch rune) bool {
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return (ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z')
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}
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func isNumber(ch rune) bool {
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return ch >= '0' && ch <= '9'
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}
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func isDelta(ch rune) bool {
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return ch == '\u2206' || ch == '\u0394'
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}
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var eof = rune(0)
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