mojo/public/tools/bindings/generators/dart_templates/union_definition.tmpl - Issue 2250183003: Make the fuchsia mojo/public repo the source of truth.

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Issue 2250183003: Make the fuchsia mojo/public repo the source of truth. (Closed) Base URL: https://github.com/domokit/mojo.git@master

Patch Set: Created 4 years, 4 months ago

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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 %}

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