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package encode |
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2
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3
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import ( |
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4
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"encoding" |
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5
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"reflect" |
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6
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7
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"github.com/et-nik/binngo/binn" |
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8
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) |
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9
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10
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func newMapEncoder(t reflect.Type) encoderFunc { |
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1 |
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switch t.Key().Kind() { |
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case reflect.String: |
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1 |
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me := mapObjectEncoder{ |
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newTypeEncoder(t.Elem()), |
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t, |
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} |
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1 |
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return me.encode |
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case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, |
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reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr: |
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1 |
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me := mapEncoder{newTypeEncoder(t.Elem())} |
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1 |
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return me.encode |
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default: |
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if t.Key().Implements(textMarshalerType) { |
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me := mapObjectEncoder{ |
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newTypeEncoder(t.Elem()), |
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t, |
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} |
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return me.encode |
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} |
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return func(v reflect.Value) ([]byte, error) { |
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return nil, &UnsupportedTypeError{t} |
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} |
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} |
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} |
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type mapObjectEncoder struct { |
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elemEnc encoderFunc |
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itemType reflect.Type |
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} |
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func (me *mapObjectEncoder) encode(v reflect.Value) ([]byte, error) { |
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1 |
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dataBytes := []byte{} |
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45
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1 |
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keys := v.MapKeys() |
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47
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1 |
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for _, key := range keys { |
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1 |
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bval, err := encodeTextKey(key) |
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1 |
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if err != nil { |
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return nil, err |
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} |
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1 |
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dataBytes = append(dataBytes, bval...) |
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53
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54
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1 |
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encodedValue, err := me.elemEnc(v.MapIndex(key)) |
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1 |
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if err != nil { |
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return nil, err |
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} |
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58
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59
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1 |
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dataBytes = append(dataBytes, encodedValue...) |
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} |
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1 |
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bytes := []byte{} |
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63
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64
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1 |
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typeBytes := Uint8(binn.ObjectType) |
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1 |
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countBytes := Size(len(keys), false) |
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67
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1 |
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bytes = append(bytes, typeBytes...) |
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1 |
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bytes = append(bytes, Size(len(typeBytes)+len(dataBytes)+len(countBytes), true)...) |
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1 |
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bytes = append(bytes, countBytes...) |
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70
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1 |
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bytes = append(bytes, dataBytes...) |
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71
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72
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1 |
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return bytes, nil |
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} |
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75
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type mapEncoder struct { |
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elemEnc encoderFunc |
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} |
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79
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func (me *mapEncoder) encode(v reflect.Value) ([]byte, error) { |
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80
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1 |
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var dataBytes []byte |
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81
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82
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1 |
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iter := v.MapRange() |
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83
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84
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1 |
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for iter.Next() { |
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1 |
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key := iter.Key() |
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1 |
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val := iter.Value() |
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87
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88
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1 |
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dataBytes = append(dataBytes, Int32(int32(key.Int()))...) |
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89
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90
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1 |
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encodedValue, err := me.elemEnc(val) |
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1 |
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if err != nil { |
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return nil, err |
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93
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} |
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94
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1 |
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dataBytes = append(dataBytes, encodedValue...) |
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} |
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96
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97
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1 |
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keys := v.MapKeys() |
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98
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99
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1 |
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bytes := []byte{} |
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100
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101
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1 |
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typeBytes := Uint8(binn.MapType) |
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102
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1 |
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countBytes := Size(len(keys), false) |
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103
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104
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1 |
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bytes = append(bytes, typeBytes...) |
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105
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1 |
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bytes = append(bytes, Size(len(typeBytes)+len(dataBytes)+len(countBytes), true)...) |
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106
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1 |
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bytes = append(bytes, countBytes...) |
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107
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1 |
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bytes = append(bytes, dataBytes...) |
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108
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109
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1 |
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return bytes, nil |
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110
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} |
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111
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112
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func encodeTextKey(v reflect.Value) ([]byte, error) { |
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113
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1 |
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if v.Kind() == reflect.String { |
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114
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1 |
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return String(v.String()), nil |
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115
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} |
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116
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117
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m, ok := v.Interface().(encoding.TextMarshaler) |
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118
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if !ok { |
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119
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return []byte{binn.Null}, nil |
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120
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} |
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121
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122
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s, err := m.MarshalText() |
|
123
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if err != nil { |
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124
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return nil, err |
|
125
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} |
|
126
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127
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return String(string(s)), nil |
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128
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} |
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129
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et-nik /
binngo
