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40 lines
648 B
Go
40 lines
648 B
Go
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package govaluate
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type lexerStream struct {
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source []rune
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position int
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length int
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}
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func newLexerStream(source string) *lexerStream {
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var ret *lexerStream
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var runes []rune
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for _, character := range source {
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runes = append(runes, character)
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}
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ret = new(lexerStream)
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ret.source = runes
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ret.length = len(runes)
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return ret
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}
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func (this *lexerStream) readCharacter() rune {
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var character rune
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character = this.source[this.position]
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this.position += 1
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return character
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}
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func (this *lexerStream) rewind(amount int) {
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this.position -= amount
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}
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func (this lexerStream) canRead() bool {
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return this.position < this.length
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}
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