Merge pull request #201 from Bytom/v0.1

[bytom/vapor.git] / protocol / bc / types / crosschain_input.go

diff --git a/protocol/bc/types/crosschain_input.go b/protocol/bc/types/crosschain_input.go
new file mode 100644 (file)
index 0000000..e29673d
--- /dev/null
+++ b/protocol/bc/types/crosschain_input.go
@@ -0,0 +1,44 @@
+package types
+
+import (
+       "github.com/vapor/protocol/bc"
+)
+
+// CrossChainInput satisfies the TypedInput interface and represents a cross-chain transaction.
+type CrossChainInput struct {
+       SpendCommitmentSuffix []byte   // The unconsumed suffix of the spend commitment
+       Arguments             [][]byte // Witness
+       SpendCommitment
+
+       VMVersion       uint64
+       AssetDefinition []byte
+       IssuanceProgram []byte
+}
+
+// NewCrossChainInput create a new CrossChainInput struct.
+// The source is created/issued by trusted federation and hence there is no need
+// to refer to it.
+func NewCrossChainInput(arguments [][]byte, sourceID bc.Hash, assetID bc.AssetID, amount, sourcePos, vmVersion uint64, assetDefinition, issuanceProgram []byte) *TxInput {
+       sc := SpendCommitment{
+               AssetAmount: bc.AssetAmount{
+                       AssetId: &assetID,
+                       Amount:  amount,
+               },
+               SourceID:       sourceID,
+               SourcePosition: sourcePos,
+               VMVersion:      1,
+       }
+       return &TxInput{
+               AssetVersion: 1,
+               TypedInput: &CrossChainInput{
+                       SpendCommitment: sc,
+                       Arguments:       arguments,
+                       VMVersion:       vmVersion,
+                       AssetDefinition: assetDefinition,
+                       IssuanceProgram: issuanceProgram,
+               },
+       }
+}
+
+// InputType is the interface function for return the input type.
+func (si *CrossChainInput) InputType() uint8 { return CrossChainInputType }