OLD | NEW |
| (Empty) |
1 {#--- Begin #} | |
2 | |
3 {%- import "encoding_macros.tmpl" as encoding_macros %} | |
4 {%- macro enum_def(union) %} | |
5 enum {{union|name}}Tag { | |
6 {%- for field in union.fields %} | |
7 {{field|name}}, | |
8 {%- endfor %} | |
9 unknown | |
10 } | |
11 {%- endmacro %} | |
12 | |
13 {%- macro wrapper_def(union) %} | |
14 class {{union|name}} extends bindings.Union { | |
15 static final _tagToInt = const { | |
16 {%- for field in union.fields %} | |
17 {{union|name}}Tag.{{field|name}}: {{field.ordinal}}, | |
18 {%- endfor %} | |
19 }; | |
20 | |
21 static final _intToTag = const { | |
22 {%- for field in union.fields %} | |
23 {{field.ordinal}}: {{union|name}}Tag.{{field|name}}, | |
24 {%- endfor %} | |
25 }; | |
26 | |
27 var _data; | |
28 {{union|name}}Tag _tag = {{union|name}}Tag.unknown; | |
29 | |
30 {{union|name}}Tag get tag => _tag; | |
31 | |
32 {%- for field in union.fields %} | |
33 {{field.kind|dart_type}} get {{field|name}} { | |
34 if (_tag != {{union|name}}Tag.{{field|name}}) { | |
35 throw new bindings.UnsetUnionTagError(_tag, {{union|name}}Tag.{{field|name
}}); | |
36 } | |
37 return _data; | |
38 } | |
39 | |
40 set {{field|name}}({{field.kind|dart_type}} value) { | |
41 _tag = {{union|name}}Tag.{{field|name}}; | |
42 _data = value; | |
43 } | |
44 {%- endfor %} | |
45 | |
46 static {{union|name}} decode(bindings.Decoder decoder0, int offset) { | |
47 int size = decoder0.decodeUint32(offset); | |
48 if (size == 0) { | |
49 return null; | |
50 } | |
51 {{union|name}} result = new {{union|name}}(); | |
52 | |
53 {# Unknown union members not handled. #} | |
54 {{union|name}}Tag tag = _intToTag[decoder0.decodeUint32(offset + 4)]; | |
55 switch (tag) { | |
56 {%- for field in union.fields %} | |
57 case {{union|name}}Tag.{{field|name}}: | |
58 {%- if field.kind|is_union_kind %} | |
59 var decoder1 = decoder0.decodePointer(offset + 8, {{field.kind|is_nullab
le_kind|dart_true_false}}); | |
60 result.{{field|name}} = {{field.kind|dart_type}}.decode(decoder1, 0); | |
61 {%- else %} | |
62 {{encoding_macros.decode('result.' ~ field|name, field.kind, "offset + 8
", 0)|indent(8)}} | |
63 {%- endif %} | |
64 break; | |
65 {%- endfor %} | |
66 default: | |
67 throw new bindings.MojoCodecError("Bad union tag: $tag"); | |
68 } | |
69 | |
70 return result; | |
71 } | |
72 | |
73 void encode(bindings.Encoder encoder0, int offset) { | |
74 {# TODO(azani): Error when trying to encode an unknown member. #} | |
75 encoder0.encodeUint32(16, offset); | |
76 encoder0.encodeUint32(_tagToInt[_tag], offset + 4); | |
77 switch (_tag) { | |
78 {%- for field in union.fields %} | |
79 case {{union|name}}Tag.{{field|name}}: | |
80 {%- if field.kind|is_union_kind %} | |
81 encoder0.encodeNestedUnion({{field|name}}, offset + 8, {{field.kind|is_n
ullable_kind|dart_true_false}}); | |
82 {%- else %} | |
83 {{encoding_macros.encode(field|name, field.kind, "offset + 8", 0)|indent
(8)}} | |
84 {%- endif %} | |
85 break; | |
86 {%- endfor %} | |
87 default: | |
88 throw new bindings.MojoCodecError("Bad union tag: $_tag"); | |
89 } | |
90 } | |
91 | |
92 String toString() { | |
93 String result = "{{union|name}}("; | |
94 switch (_tag) { | |
95 {%- for field in union.fields %} | |
96 case {{union|name}}Tag.{{field|name}}: | |
97 result += "{{field|name}}"; | |
98 break; | |
99 {%- endfor %} | |
100 default: | |
101 result += "unknown"; | |
102 } | |
103 result += ": $_data)"; | |
104 return result; | |
105 } | |
106 } | |
107 {%- endmacro %} | |
108 | |
109 | |
110 {%- macro union_def(union, typepkg, package) %} | |
111 {{enum_def(union)}} | |
112 {{wrapper_def(union)}} | |
113 | |
114 {%- endmacro %} | |
OLD | NEW |