25 lines
630 B
Go
25 lines
630 B
Go
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package goparsify_test
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import (
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"fmt"
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. "github.com/vektah/goparsify"
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)
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func ExampleCuts() {
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// without a cut if the close tag is left out the parser will backtrack and ignore the rest of the string
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alpha := Chars("a-z")
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nocut := Many(Any(Seq("<", alpha, ">"), alpha))
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_, err := Run(nocut, "asdf <foo")
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fmt.Println(err.Error())
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// 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
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cut := Many(Any(Seq("<", Cut, alpha, ">"), alpha))
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_, err = Run(cut, "asdf <foo")
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fmt.Println(err.Error())
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// Output:
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// left unparsed: <foo
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// offset 9: expected >
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}
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