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https://github.com/golang/go
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52 lines
1.1 KiB
Go
52 lines
1.1 KiB
Go
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// +build ignore
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package A1
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import (
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. "fmt"
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myfmt "fmt"
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"os"
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"strings"
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)
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func example(n int) {
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x := "foo" + strings.Repeat("\t", n)
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// Match, despite named import.
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myfmt.Errorf("%s", x)
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// Match, despite dot import.
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Errorf("%s", x)
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// Match: multiple matches in same function are possible.
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myfmt.Errorf("%s", x)
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// No match: wildcarded operand has the wrong type.
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myfmt.Errorf("%s", 3)
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// No match: function operand doesn't match.
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myfmt.Printf("%s", x)
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// No match again, dot import.
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Printf("%s", x)
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// Match.
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myfmt.Fprint(os.Stderr, myfmt.Errorf("%s", x+"foo"))
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// No match: though this literally matches the template,
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// fmt doesn't resolve to a package here.
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var fmt struct{ Errorf func(string, string) }
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fmt.Errorf("%s", x)
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// Recursive matching:
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// Match: both matches are well-typed, so both succeed.
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myfmt.Errorf("%s", myfmt.Errorf("%s", x+"foo").Error())
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// Outer match succeeds, inner doesn't: 3 has wrong type.
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myfmt.Errorf("%s", myfmt.Errorf("%s", 3).Error())
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// Inner match succeeds, outer doesn't: the inner replacement
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// has the wrong type (error not string).
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myfmt.Errorf("%s", myfmt.Errorf("%s", x+"foo"))
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}
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