[GitHub] [tvm] gigiblender commented on a diff in pull request #12066: Unify name mangling in TVM

[GitBox <gi...@apache.org>]

gigiblender commented on code in PR #12066:
URL: https://github.com/apache/tvm/pull/12066#discussion_r931136002


##########
include/tvm/ir/name_supply.h:
##########
@@ -0,0 +1,139 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+/*!
+ * \file tvm/ir/name_supply.h
+ * \brief NameSupply that can be used to generate unique variable names.
+ */
+#ifndef TVM_IR_NAME_SUPPLY_H_
+#define TVM_IR_NAME_SUPPLY_H_
+
+#include <string>
+#include <unordered_map>
+
+#include "tvm/ir/expr.h"
+
+namespace tvm {
+
+/*!
+ * \brief NameSupply can be used to generate unique names.
+ */
+class NameSupplyNode : public Object {
+ public:
+  /*!
+   * \brief Empty constructor. Will use an empty prefix for the constructed NameSupply.
+   */
+  NameSupplyNode() : NameSupplyNode("") {}
+
+  /*!
+   * \brief Constructs a NameSupply with the given \p prefix.
+   */
+  explicit NameSupplyNode(const String& prefix);
+
+  /*!
+   * \brief Generates a unique name from this NameSupply.
+   * \param name The name from which the generated name is derived.
+   * \param add_prefix If set to true, then the prefix of this NameSupply will be prepended to the
+   * name. \return A unique name.
+   */
+  String FreshName(const String& name, bool add_prefix = true);
+
+  /*!
+   * \brief Reserves an existing name with this NameSupply.
+   * \param name The name to be reserved.
+   * \param add_prefix If set to true, then the prefix of this NameSupply will be prepended to the
+   * name before reserving it. \return The name that was reserved with the NameSupply. It can be
+   * different if a prefix is added.
+   */
+  String ReserveName(const String& name, bool add_prefix = true);
+
+  /*!
+   * \brief Checks if this NameSupply already generated a name.
+   * \param name The name to check.
+   * \param add_prefix If set to true, then the prefix of this NameSupply will be prepended to the
+   * name before checking for it. \return True if the name has already been generated. False
+   * otherwise.
+   */
+  bool ContainsName(const String& name, bool add_prefix = true);
+
+  /*!
+   * \brief Clears this NameSupply of all the generated names.
+   */
+  void Clear();
+
+  void VisitAttrs(AttrVisitor* v) { v->Visit("prefix", &prefix_); }

Review Comment:
   I think we need this for reflection? https://github.com/apache/tvm/blob/main/include/tvm/node/reflection.h#L293



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