e.go

Documentation: go/doc/testdata

     1  // Copyright 2012 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  // The package e is a go/doc test for embedded methods.
     6  package e
     7  
     8  // ----------------------------------------------------------------------------
     9  // Conflicting methods M must not show up.
    10  
    11  type t1 struct{}
    12  
    13  // t1.M should not appear as method in a Tx type.
    14  func (t1) M() {}
    15  
    16  type t2 struct{}
    17  
    18  // t2.M should not appear as method in a Tx type.
    19  func (t2) M() {}
    20  
    21  // T1 has no embedded (level 1) M method due to conflict.
    22  type T1 struct {
    23  	t1
    24  	t2
    25  }
    26  
    27  // ----------------------------------------------------------------------------
    28  // Higher-level method M wins over lower-level method M.
    29  
    30  // T2 has only M as top-level method.
    31  type T2 struct {
    32  	t1
    33  }
    34  
    35  // T2.M should appear as method of T2.
    36  func (T2) M() {}
    37  
    38  // ----------------------------------------------------------------------------
    39  // Higher-level method M wins over lower-level conflicting methods M.
    40  
    41  type t1e struct {
    42  	t1
    43  }
    44  
    45  type t2e struct {
    46  	t2
    47  }
    48  
    49  // T3 has only M as top-level method.
    50  type T3 struct {
    51  	t1e
    52  	t2e
    53  }
    54  
    55  // T3.M should appear as method of T3.
    56  func (T3) M() {}
    57  
    58  // ----------------------------------------------------------------------------
    59  // Don't show conflicting methods M embedded via an exported and non-exported
    60  // type.
    61  
    62  // T1 has no embedded (level 1) M method due to conflict.
    63  type T4 struct {
    64  	t2
    65  	T2
    66  }
    67  
    68  // ----------------------------------------------------------------------------
    69  // Don't show embedded methods of exported anonymous fields unless AllMethods
    70  // is set.
    71  
    72  type T4 struct{}
    73  
    74  // T4.M should appear as method of T5 only if AllMethods is set.
    75  func (*T4) M() {}
    76  
    77  type T5 struct {
    78  	T4
    79  }
    80  
    81  // ----------------------------------------------------------------------------
    82  // Recursive type declarations must not lead to endless recursion.
    83  
    84  type U1 struct {
    85  	*U1
    86  }
    87  
    88  // U1.M should appear as method of U1.
    89  func (*U1) M() {}
    90  
    91  type U2 struct {
    92  	*U3
    93  }
    94  
    95  // U2.M should appear as method of U2 and as method of U3 only if AllMethods is set.
    96  func (*U2) M() {}
    97  
    98  type U3 struct {
    99  	*U2
   100  }
   101  
   102  // U3.N should appear as method of U3 and as method of U2 only if AllMethods is set.
   103  func (*U3) N() {}
   104  
   105  type U4 struct {
   106  	*u5
   107  }
   108  
   109  // U4.M should appear as method of U4.
   110  func (*U4) M() {}
   111  
   112  type u5 struct {
   113  	*U4
   114  }
   115  
   116  // ----------------------------------------------------------------------------
   117  // A higher-level embedded type (and its methods) wins over the same type (and
   118  // its methods) embedded at a lower level.
   119  
   120  type V1 struct {
   121  	*V2
   122  	*V5
   123  }
   124  
   125  type V2 struct {
   126  	*V3
   127  }
   128  
   129  type V3 struct {
   130  	*V4
   131  }
   132  
   133  type V4 struct {
   134  	*V5
   135  }
   136  
   137  type V5 struct {
   138  	*V6
   139  }
   140  
   141  type V6 struct{}
   142  
   143  // V4.M should appear as method of V2 and V3 if AllMethods is set.
   144  func (*V4) M() {}
   145  
   146  // V6.M should appear as method of V1 and V5 if AllMethods is set.
   147  func (*V6) M() {}
   148
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