added Receipt

w3vm/receipt.go

@@ -0,0 +1,32 @@
+package w3vm
+
+import (
+	"errors"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/lmittmann/w3/w3types"
+)
+
+// Receipt represents the result of an applied [w3types.Message].
+type Receipt struct {
+	f w3types.Func // Func of corresponding message
+
+	GasUsed         uint64          // Gas used by the message
+	GasLimit        uint64          // Minimum required gas limit (gas used + gas refund)
+	Logs            []*types.Log    // Logs emitted by the message
+	Output          []byte          // Output bytes of the applied message
+	ContractAddress *common.Address // Contract address created by a contract creation transaction
+
+	Err error // Err returned on revert
+}
+
+func (r Receipt) DecodeReturns(returns ...any) error {
+	if r.Err != nil {
+		return r.Err
+	}
+	if r.f == nil {
+		return errors.New("no function")
+	}
+	return r.f.DecodeReturns(r.Output, returns...)
+}