Optimize the error message of GatherTreeOP.

paddle/fluid/operators/gather_tree_op.cc

@@ -22,19 +22,16 @@ class GatherTreeOp : public framework::OperatorWithKernel {
   using framework::OperatorWithKernel::OperatorWithKernel;
 
   void InferShape(framework::InferShapeContext* ctx) const override {
-    PADDLE_ENFORCE_EQ(ctx->HasInput("Ids"), true,
-                      "Input(Ids) of GatherTreeOp should not be null.");
-    PADDLE_ENFORCE_EQ(ctx->HasInput("Parents"), true,
-                      "Input(Parents) of GatherTreeOp should not be null.");
-    PADDLE_ENFORCE_EQ(ctx->HasOutput("Out"), true,
-                      "Output(Out) of GatherTreeOp should not be null.");
+    OP_INOUT_CHECK(ctx->HasInput("Ids"), "Input", "Ids", "GatherTree");
+    OP_INOUT_CHECK(ctx->HasInput("Parents"), "Input", "Parents", "GatherTree");
+    OP_INOUT_CHECK(ctx->HasOutput("Out"), "Output", "Out", "GatherTree");
 
     auto ids_dims = ctx->GetInputDim("Ids");
     auto parents_dims = ctx->GetInputDim("Parents");
-    PADDLE_ENFORCE_EQ(
-        ids_dims == parents_dims, true,
-        "The shape of Input(Parents) must be same with the shape of "
-        "Input(Ids).");
+    PADDLE_ENFORCE_EQ(ids_dims == parents_dims, true,
+                      platform::errors::InvalidArgument(
+                          "The shape of Input(Parents) must be same with the "
+                          "shape of Input(Ids)."));
     ctx->SetOutputDim("Out", ids_dims);
   }