chore: re-add IntProto and DecProto and deprecate msg (backport #22925)

CHANGELOG.md

@@ -161,7 +161,7 @@ Every module contains its own CHANGELOG.md. Please refer to the module you are i
 ### API Breaking Changes
 
 * (baseapp) [#16244](https://github.com/cosmos/cosmos-sdk/pull/16244) `SetProtocolVersion` has been renamed to `SetAppVersion`. It now updates the consensus params in baseapp's `ParamStore`.
-* (types) [#16918](https://github.com/cosmos/cosmos-sdk/pull/16918) Remove `IntProto` and `DecProto`. Instead, `math.Int` and `math.LegacyDec` should be used respectively. Both types support `Marshal` and `Unmarshal` which should be used for binary marshaling.
+* (types) [#16918](https://github.com/cosmos/cosmos-sdk/pull/16918), [#22925](https://github.com/cosmos/cosmos-sdk/pull/22925) Deprecate `IntProto` and `DecProto`. Instead, `math.Int` and `math.LegacyDec` should be used respectively. Both types support `Marshal` and `Unmarshal` which should be used for binary marshaling.
 * (client) [#17215](https://github.com/cosmos/cosmos-sdk/pull/17215) `server.StartCmd`,`server.ExportCmd`,`server.NewRollbackCmd`,`pruning.Cmd`,`genutilcli.InitCmd`,`genutilcli.GenTxCmd`,`genutilcli.CollectGenTxsCmd`,`genutilcli.AddGenesisAccountCmd`, do not take a home directory anymore. It is inferred from the root command.
 * (client) [#17259](https://github.com/cosmos/cosmos-sdk/pull/17259) Remove deprecated `clientCtx.PrintObjectLegacy`. Use `clientCtx.PrintProto` or `clientCtx.PrintRaw` instead.
 * (types) [#17348](https://github.com/cosmos/cosmos-sdk/pull/17348) Remove the `WrapServiceResult` function.

proto/cosmos/base/v1beta1/coin.proto

@@ -39,3 +39,27 @@ message DecCoin {
     (gogoproto.nullable)   = false
   ];
 }
+
+// IntProto defines a Protobuf wrapper around an Int object.
+// Deprecated: Prefer to use math.Int directly. It supports binary Marshal and Unmarshal.
+message IntProto {
+  option deprecated = true;
+
+  string int = 1 [
+    (cosmos_proto.scalar)  = "cosmos.Int",
+    (gogoproto.customtype) = "cosmossdk.io/math.Int",
+    (gogoproto.nullable)   = false
+  ];
+}
+
+// DecProto defines a Protobuf wrapper around a Dec object.
+// Deprecated: Prefer to use math.LegacyDec directly. It supports binary Marshal and Unmarshal.
+message DecProto {
+  option deprecated = true;
+
+  string dec = 1 [
+    (cosmos_proto.scalar)  = "cosmos.Dec",
+    (gogoproto.customtype) = "cosmossdk.io/math.LegacyDec",
+    (gogoproto.nullable)   = false
+  ];
+}

types/coin.go

@@ -955,3 +955,15 @@ func NormalizeCoins(coins []DecCoin) Coins {
 
 	return result
 }
+
+// ----------------------------------------------------------------------------
+
+// Deprecated: Use math.Int instead.
+func (ip IntProto) String() string {
+	return ip.Int.String()
+}
+
+// Deprecated: Use math.LegacyDec instead.
+func (dp DecProto) String() string {
+	return dp.Dec.String()
+}