37 lines
574 B
Go
37 lines
574 B
Go
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package govaluate
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type tokenStream struct {
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tokens []ExpressionToken
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index int
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tokenLength int
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}
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func newTokenStream(tokens []ExpressionToken) *tokenStream {
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var ret *tokenStream
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ret = new(tokenStream)
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ret.tokens = tokens
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ret.tokenLength = len(tokens)
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return ret
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}
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func (this *tokenStream) rewind() {
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this.index -= 1
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}
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func (this *tokenStream) next() ExpressionToken {
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var token ExpressionToken
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token = this.tokens[this.index]
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this.index += 1
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return token
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}
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func (this tokenStream) hasNext() bool {
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return this.index < this.tokenLength
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}
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