github.com/v2fly/tools@v0.100.0/refactor/eg/testdata/A1.go (about)

     1  package A1
     2  
     3  import (
     4  	. "fmt"
     5  	myfmt "fmt"
     6  	"os"
     7  	"strings"
     8  )
     9  
    10  func example(n int) {
    11  	x := "foo" + strings.Repeat("\t", n)
    12  	// Match, despite named import.
    13  	myfmt.Errorf("%s", x)
    14  
    15  	// Match, despite dot import.
    16  	Errorf("%s", x)
    17  
    18  	// Match: multiple matches in same function are possible.
    19  	myfmt.Errorf("%s", x)
    20  
    21  	// No match: wildcarded operand has the wrong type.
    22  	myfmt.Errorf("%s", 3)
    23  
    24  	// No match: function operand doesn't match.
    25  	myfmt.Printf("%s", x)
    26  
    27  	// No match again, dot import.
    28  	Printf("%s", x)
    29  
    30  	// Match.
    31  	myfmt.Fprint(os.Stderr, myfmt.Errorf("%s", x+"foo"))
    32  
    33  	// No match: though this literally matches the template,
    34  	// fmt doesn't resolve to a package here.
    35  	var fmt struct{ Errorf func(string, string) }
    36  	fmt.Errorf("%s", x)
    37  
    38  	// Recursive matching:
    39  
    40  	// Match: both matches are well-typed, so both succeed.
    41  	myfmt.Errorf("%s", myfmt.Errorf("%s", x+"foo").Error())
    42  
    43  	// Outer match succeeds, inner doesn't: 3 has wrong type.
    44  	myfmt.Errorf("%s", myfmt.Errorf("%s", 3).Error())
    45  
    46  	// Inner match succeeds, outer doesn't: the inner replacement
    47  	// has the wrong type (error not string).
    48  	myfmt.Errorf("%s", myfmt.Errorf("%s", x+"foo"))
    49  }