listunstructured.go

Documentation: sigs.k8s.io/structured-merge-diff/v4/value

     1  /*
     2  Copyright 2019 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package value
    18  
    19  type listUnstructured []interface{}
    20  
    21  func (l listUnstructured) Length() int {
    22  	return len(l)
    23  }
    24  
    25  func (l listUnstructured) At(i int) Value {
    26  	return NewValueInterface(l[i])
    27  }
    28  
    29  func (l listUnstructured) AtUsing(a Allocator, i int) Value {
    30  	return a.allocValueUnstructured().reuse(l[i])
    31  }
    32  
    33  func (l listUnstructured) Equals(other List) bool {
    34  	return l.EqualsUsing(HeapAllocator, other)
    35  }
    36  
    37  func (l listUnstructured) EqualsUsing(a Allocator, other List) bool {
    38  	return ListEqualsUsing(a, &l, other)
    39  }
    40  
    41  func (l listUnstructured) Range() ListRange {
    42  	return l.RangeUsing(HeapAllocator)
    43  }
    44  
    45  func (l listUnstructured) RangeUsing(a Allocator) ListRange {
    46  	if len(l) == 0 {
    47  		return EmptyRange
    48  	}
    49  	r := a.allocListUnstructuredRange()
    50  	r.list = l
    51  	r.i = -1
    52  	return r
    53  }
    54  
    55  type listUnstructuredRange struct {
    56  	list listUnstructured
    57  	vv   *valueUnstructured
    58  	i    int
    59  }
    60  
    61  func (r *listUnstructuredRange) Next() bool {
    62  	r.i += 1
    63  	return r.i < len(r.list)
    64  }
    65  
    66  func (r *listUnstructuredRange) Item() (index int, value Value) {
    67  	if r.i < 0 {
    68  		panic("Item() called before first calling Next()")
    69  	}
    70  	if r.i >= len(r.list) {
    71  		panic("Item() called on ListRange with no more items")
    72  	}
    73  	return r.i, r.vv.reuse(r.list[r.i])
    74  }
    75
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