Merge pull request #201 from Bytom/v0.1

[bytom/vapor.git] / claim / bytom / mainchain / constraint.go

diff --git a/claim/bytom/mainchain/constraint.go b/claim/bytom/mainchain/constraint.go
deleted file mode 100644 (file)
index 5f6ca1b..0000000
--- a/claim/bytom/mainchain/constraint.go
+++ /dev/null
@@ -1,47 +0,0 @@
-package mainchain
-
-import (
-       "github.com/vapor/protocol/bc"
-       "github.com/vapor/protocol/vm"
-       "github.com/vapor/protocol/vm/vmutil"
-)
-
-// Constraint types express a constraint on an input of a proposed
-// transaction, and know how to turn that constraint into part of a
-// signature program in that input's witness.
-type constraint interface {
-       // Code produces bytecode expressing the constraint. The code, when
-       // executed, must consume nothing from the stack and leave a new
-       // boolean value on top of it.
-       code() []byte
-}
-
-// outpointConstraint requires the outputID (and therefore, the outpoint) being spent to equal the
-// given value.
-type outputIDConstraint bc.Hash
-
-func (o outputIDConstraint) code() []byte {
-       builder := vmutil.NewBuilder()
-       builder.AddData(bc.Hash(o).Bytes())
-       builder.AddOp(vm.OP_OUTPUTID)
-       builder.AddOp(vm.OP_EQUAL)
-       prog, _ := builder.Build() // error is impossible
-       return prog
-}
-
-// PayConstraint requires the transaction to include a given output
-// at the given index, optionally with the given refdatahash.
-type payConstraint struct {
-       Index int
-       bc.AssetAmount
-       Program []byte
-}
-
-func (p payConstraint) code() []byte {
-       builder := vmutil.NewBuilder()
-       builder.AddInt64(int64(p.Index))
-       builder.AddInt64(int64(p.Amount)).AddData(p.AssetId.Bytes()).AddInt64(1).AddData(p.Program)
-       builder.AddOp(vm.OP_CHECKOUTPUT)
-       prog, _ := builder.Build() // error is impossible
-       return prog
-}