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