interpreter.h

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/*
 * 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.
 */

#ifndef TVM_RELAY_INTERPRETER_H_
#define TVM_RELAY_INTERPRETER_H_

#include <tvm/ir/module.h>
#include <tvm/relay/expr.h>
#include <tvm/runtime/container/closure.h>
#include <tvm/runtime/object.h>
#include <tvm/target/target.h>

#include <unordered_set>

namespace tvm {
namespace relay {

class InterpreterClosureObj : public runtime::ClosureObj {
 public:
  tvm::Map<Var, ObjectRef> env;
  Function func;

  InterpreterClosureObj() {}

  void VisitAttrs(tvm::AttrVisitor* v) {
    v->Visit("env", &env);
    v->Visit("func", &func);
  }

  static constexpr const char* _type_key = "interpreter.Closure";
  TVM_DECLARE_FINAL_OBJECT_INFO(InterpreterClosureObj, runtime::ClosureObj);
};

class InterpreterClosure : public runtime::Closure {
 public:
  TVM_DLL InterpreterClosure(tvm::Map<Var, ObjectRef> env, Function func);
  TVM_DEFINE_OBJECT_REF_METHODS(InterpreterClosure, runtime::Closure, InterpreterClosureObj);
};

class RecClosureObj : public Object {
 public:
  InterpreterClosure clos;
  Var bind;

  RecClosureObj() {}

  void VisitAttrs(tvm::AttrVisitor* v) {
    v->Visit("clos", &clos);
    v->Visit("bind", &bind);
  }

  static constexpr const char* _type_key = "interpreter.RecClosure";
  TVM_DECLARE_FINAL_OBJECT_INFO(RecClosureObj, Object);
};

class RecClosure : public ObjectRef {
 public:
  TVM_DLL RecClosure(InterpreterClosure clos, Var bind);
  TVM_DEFINE_OBJECT_REF_METHODS(RecClosure, ObjectRef, RecClosureObj);
};

struct RefValueObj : Object {
  mutable ObjectRef value;

  RefValueObj() {}

  void VisitAttrs(tvm::AttrVisitor* v) { v->Visit("value", &value); }

  static constexpr const char* _type_key = "relay.RefValue";
  TVM_DECLARE_FINAL_OBJECT_INFO(RefValueObj, Object);
};

class RefValue : public ObjectRef {
 public:
  TVM_DLL RefValue(ObjectRef val);
  TVM_DEFINE_OBJECT_REF_METHODS(RefValue, ObjectRef, RefValueObj);
};

struct ConstructorValueObj : Object {
  int32_t tag;

  tvm::Array<ObjectRef> fields;

  Constructor constructor;

  void VisitAttrs(tvm::AttrVisitor* v) {
    v->Visit("tag", &tag);
    v->Visit("fields", &fields);
    v->Visit("constructor", &constructor);
  }

  static constexpr const char* _type_key = "relay.ConstructorValue";
  TVM_DECLARE_FINAL_OBJECT_INFO(ConstructorValueObj, Object);
};

class ConstructorValue : public ObjectRef {
 public:
  TVM_DLL ConstructorValue(int32_t tag, tvm::Array<ObjectRef> fields, Constructor construtor = {});

  TVM_DEFINE_OBJECT_REF_METHODS(ConstructorValue, ObjectRef, ConstructorValueObj);
};

TypedPackedFunc<ObjectRef(Array<Expr>)> EvalFunction(IRModule mod, Expr expr, Device device,
                                                     Target target);

ObjectRef Eval(Expr expr, Map<GlobalTypeVar, TypeData> type_definitions,
               std::unordered_set<String> import_set, Device device, Target target,
               Map<String, ObjectRef> attrs = {});

}  // namespace relay
}  // namespace tvm

#endif  // TVM_RELAY_INTERPRETER_H_