Add some missing comments on exported items.

jsonapi.go

@@ -115,10 +115,12 @@ type Vin struct {
 	Sequence  uint32     `json:"sequence"`
 }
 
+// IsCoinBase returns a bool to show if a Vin is a Coinbase one or not.
 func (v *Vin) IsCoinBase() bool {
 	return len(v.Coinbase) > 0
 }
 
+// MarshalJSON provides a custom Marshal method for Vin.
 func (v *Vin) MarshalJSON() ([]byte, error) {
 	if v.IsCoinBase() {
 		coinbaseStruct := struct {
@@ -192,11 +194,14 @@ type ValidateAddressResult struct {
 	Account      string `json:"account,omitempty"`
 }
 
+// SignRawTransactionResult models the data from the signrawtransaction
+// command.
 type SignRawTransactionResult struct {
 	Hex      string `json:"hex"`
 	Complete bool   `json:"complete"`
 }
 
+// ListUnSpentResult models the data from the ListUnSpentResult command.
 type ListUnSpentResult struct {
 	TxId          string  `json:"txid"`
 	Vout          float64 `json:"vout"`

jsoncmd.go

@@ -37,7 +37,7 @@ type RawCmd struct {
 	Params  []interface{} `json:"params"`
 }
 
-// ParseRawCmd is a function to create a custom Cmd from a RawCmd.
+// RawCmdParser is a function to create a custom Cmd from a RawCmd.
 type RawCmdParser func(*RawCmd) (Cmd, error)
 
 type cmd struct {
@@ -70,7 +70,7 @@ func ParseMarshaledCmd(b []byte) (Cmd, error) {
 	}
 
 	// Return a custom command type for recognized
-	var cmd Cmd = nil
+	var cmd Cmd
 	switch r.Method {
 	case "addmultisigaddress":
 		cmd = new(AddMultisigAddressCmd)
@@ -6225,6 +6225,7 @@ func (cmd *SignMessageCmd) UnmarshalJSON(b []byte) error {
 	return nil
 }
 
+// RawTxInput models the data needed for a raw tx input.
 type RawTxInput struct {
 	Txid         string `json:"txid"`
 	Vout         int    `json:"vout"`