56 lines
958 B
Go
56 lines
958 B
Go
package jsonrpc
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import (
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"encoding/json"
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"fmt"
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"reflect"
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)
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type param struct {
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data []byte // from unmarshal
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v reflect.Value // to marshal
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}
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func (p *param) UnmarshalJSON(raw []byte) error {
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p.data = make([]byte, len(raw))
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copy(p.data, raw)
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return nil
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}
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func (p *param) MarshalJSON() ([]byte, error) {
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if p.v.Kind() == reflect.Invalid {
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return p.data, nil
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}
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return json.Marshal(p.v.Interface())
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}
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// processFuncOut finds value and error Outs in function
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func processFuncOut(funcType reflect.Type) (valOut int, errOut int, n int) {
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errOut = -1 // -1 if not found
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valOut = -1
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n = funcType.NumOut()
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switch n {
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case 0:
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case 1:
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if funcType.Out(0) == errorType {
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errOut = 0
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} else {
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valOut = 0
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}
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case 2:
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valOut = 0
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errOut = 1
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if funcType.Out(1) != errorType {
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panic("expected error as second return value")
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}
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default:
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errstr := fmt.Sprintf("too many return values: %s", funcType)
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panic(errstr)
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}
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return
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}
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