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package goparsify
import (
"fmt"
)
func ExampleCut() {
// without a cut if the close tag is left out the parser will backtrack and ignore the rest of the string
alpha := Chars("a-z")
nocut := Many(Any(Seq("<", alpha, ">"), alpha))
_, err := Run(nocut, "asdf <foo")
fmt.Println(err.Error())
// with a cut, once we see the open tag we know there must be a close tag that matches it, so the parser will error
cut := Many(Any(Seq("<", Cut(), alpha, ">"), alpha))
_, err = Run(cut, "asdf <foo")
fmt.Println(err.Error())
// Output:
// left unparsed: <foo
// offset 9: expected >
}
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