runtime-sdk/modules/evm: Add subcall precompile

client-sdk/go/modules/evm/address.go

@@ -0,0 +1,10 @@
+package evm
+
+import (
+	"github.com/oasisprotocol/oasis-sdk/client-sdk/go/types"
+)
+
+// NewAddressFromEth creates a new address from an Eth-compatible address.
+func NewAddressFromEth(ethAddress []byte) types.Address {
+	return types.NewAddressRaw(types.AddressV0Secp256k1EthContext, ethAddress)
+}

client-sdk/go/modules/evm/address_test.go

@@ -0,0 +1,20 @@
+package evm
+
+import (
+	"encoding/hex"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestNewAddressFromEth(t *testing.T) {
+	ethAddr, err := hex.DecodeString("Dce075E1C39b1ae0b75D554558b6451A226ffe00")
+	require.NoError(t, err, "hex.DecodeString")
+	addr := NewAddressFromEth(ethAddr)
+	require.Equal(t, addr.String(), "oasis1qrk58a6j2qn065m6p06jgjyt032f7qucy5wqeqpt")
+
+	ethAddr, err = hex.DecodeString("709EEbd979328A2B3605A160915DEB26E186abF8")
+	require.NoError(t, err, "hex.DecodeString")
+	addr = NewAddressFromEth(ethAddr)
+	require.Equal(t, addr.String(), "oasis1qqcd0qyda6gtwdrfcqawv3s8cr2kupzw9v967au6")
+}

runtime-sdk/modules/contracts/src/results.rs

@@ -148,6 +148,15 @@ fn process_subcalls<Cfg: Config, C: TxContext>(
                 // preconfigured the amount of available gas.
                 <C::Runtime as Runtime>::Core::use_tx_gas(ctx, result.gas_used)?;
 
+                // Forward any emitted event tags.
+                ctx.emit_etags(result.state.events);
+
+                // Forward any emitted runtime messages.
+                for (msg, hook) in result.state.messages {
+                    // This should never fail as child context has the right limits configured.
+                    ctx.emit_message(msg, hook)?;
+                }
+
                 // Process replies based on filtering criteria.
                 let result = result.call_result;
                 match (reply, result.is_success()) {

runtime-sdk/modules/contracts/src/test.rs

@@ -275,10 +275,13 @@ fn test_hello_contract_call() {
             "there should only be one denomination"
         );
 
-        let (etags, messages) = tx_ctx.commit();
-        let tags = etags.into_tags();
+        let state = tx_ctx.commit();
+        let tags = state.events.into_tags();
         // Make sure no runtime messages got emitted.
-        assert!(messages.is_empty(), "no runtime messages should be emitted");
+        assert!(
+            state.messages.is_empty(),
+            "no runtime messages should be emitted"
+        );
         // Make sure a contract event was emitted and is properly formatted.
         assert_eq!(tags.len(), 2, "two events should have been emitted");
         assert_eq!(tags[0].key, b"accounts\x00\x00\x00\x01"); // accounts.Transfer (code = 1) event

runtime-sdk/modules/evm/Cargo.toml

@@ -38,3 +38,4 @@ uint = "0.9.1"
 [dev-dependencies]
 oasis-runtime-sdk = { path = "../..", features = ["test"] }
 rand = "0.7.3"
+ethabi = { version = "18.0.0", default-features = false, features = ["std", "full-serde"]}