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package tljson | ||
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import ( | ||
"github.com/go-faster/errors" | ||
"github.com/go-faster/jx" | ||
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"github.com/gotd/td/tg" | ||
) | ||
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// Decode decodes JSON and converts it to tg.JSONValueClass. | ||
func Decode(d *jx.Decoder) (tg.JSONValueClass, error) { | ||
switch tt := d.Next(); tt { | ||
case jx.String: | ||
s, err := d.Str() | ||
if err != nil { | ||
return nil, err | ||
} | ||
return &tg.JSONString{Value: s}, nil | ||
case jx.Number: | ||
f, err := d.Float64() | ||
if err != nil { | ||
return nil, err | ||
} | ||
return &tg.JSONNumber{Value: f}, nil | ||
case jx.Null: | ||
if err := d.Null(); err != nil { | ||
return nil, err | ||
} | ||
return &tg.JSONNull{}, nil | ||
case jx.Bool: | ||
b, err := d.Bool() | ||
if err != nil { | ||
return nil, err | ||
} | ||
return &tg.JSONBool{Value: b}, nil | ||
case jx.Array: | ||
var r []tg.JSONValueClass | ||
if err := d.Arr(func(d *jx.Decoder) error { | ||
obj, err := Decode(d) | ||
if err != nil { | ||
return errors.Wrapf(err, "decode %d element", len(r)) | ||
} | ||
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r = append(r, obj) | ||
return nil | ||
}); err != nil { | ||
return nil, err | ||
} | ||
return &tg.JSONArray{Value: r}, nil | ||
case jx.Object: | ||
var r []tg.JSONObjectValue | ||
if err := d.Obj(func(d *jx.Decoder, key string) error { | ||
obj, err := Decode(d) | ||
if err != nil { | ||
return errors.Wrapf(err, "decode %q", key) | ||
} | ||
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r = append(r, tg.JSONObjectValue{ | ||
Key: key, | ||
Value: obj, | ||
}) | ||
return nil | ||
}); err != nil { | ||
return nil, err | ||
} | ||
return &tg.JSONObject{Value: r}, nil | ||
default: | ||
return nil, errors.Errorf("unexpected type %v", tt) | ||
} | ||
} | ||
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// Encode writes given value to Encoder. | ||
func Encode(obj tg.JSONValueClass, e *jx.Encoder) { | ||
switch obj := obj.(type) { | ||
case *tg.JSONNull: | ||
e.Null() | ||
case *tg.JSONBool: | ||
e.Bool(obj.Value) | ||
case *tg.JSONNumber: | ||
if v := int64(obj.Value); float64(v) == obj.Value { | ||
e.Int64(v) | ||
} else { | ||
e.Float64(obj.Value) | ||
} | ||
case *tg.JSONString: | ||
e.Str(obj.Value) | ||
case *tg.JSONArray: | ||
e.ArrStart() | ||
for _, v := range obj.Value { | ||
Encode(v, e) | ||
} | ||
e.ArrEnd() | ||
case *tg.JSONObject: | ||
e.ObjStart() | ||
for _, pair := range obj.Value { | ||
e.FieldStart(pair.Key) | ||
Encode(pair.Value, e) | ||
} | ||
e.ObjEnd() | ||
} | ||
} |
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package tljson | ||
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import ( | ||
"testing" | ||
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"github.com/go-faster/jx" | ||
"github.com/stretchr/testify/require" | ||
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"github.com/gotd/td/tg" | ||
) | ||
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func TestDecodeEncodeDecode(t *testing.T) { | ||
tests := []struct { | ||
name string | ||
input string | ||
wantErr bool | ||
expect tg.JSONValueClass | ||
}{ | ||
{"Empty", "", true, nil}, | ||
{"InvalidNull", "nul", true, nil}, | ||
{"InvalidTrue", "tru", true, nil}, | ||
{"InvalidFalse", "falsy", true, nil}, | ||
{"InvalidInt", `[1a]"`, true, nil}, | ||
{"InvalidFloat", "1.", true, nil}, | ||
{"InvalidString", `"hello`, true, nil}, | ||
{"InvalidArray", "[1, 2, 3.]", true, nil}, | ||
{"InvalidObject", `{"abc":"def}`, true, nil}, | ||
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{"Null", "null", false, nil}, | ||
{"True", "true", false, nil}, | ||
{"False", "false", false, nil}, | ||
{"Int", "10", false, nil}, | ||
{"Float", "1.1", false, nil}, | ||
{"String", `"hello"`, false, nil}, | ||
{"EmptyArray", "[]", false, nil}, | ||
{"Array", "[1, 2, 3]", false, nil}, | ||
{"EmptyObject", `{}`, false, nil}, | ||
{"Object", `{"abc":"def"}`, false, nil}, | ||
{"Tree", `{"a":1,"b":true,"c":null,"sub":{"abc":"def"}}`, false, nil}, | ||
} | ||
for _, tt := range tests { | ||
tt := tt | ||
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t.Run(tt.name, func(t *testing.T) { | ||
a := require.New(t) | ||
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// Decode. | ||
d := jx.DecodeStr(tt.input) | ||
obj, err := Decode(d) | ||
if tt.wantErr { | ||
a.Error(err) | ||
return | ||
} | ||
a.NoError(err) | ||
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// Encode. | ||
e := jx.GetEncoder() | ||
Encode(obj, e) | ||
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// Decode. | ||
d.ResetBytes(e.Bytes()) | ||
obj2, err := Decode(d) | ||
a.NoError(err) | ||
a.Equal(obj, obj2) | ||
}) | ||
} | ||
} |
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@@ -0,0 +1,2 @@ | ||
// Package tljson contains some helpers to work with JSONValue class. | ||
package tljson |