// Copyright (c) 2021 CINN Authors. All Rights Reserved.
//
// Licensed 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.

#pragma once

#include "paddle/cinn/ir/ir.h"

namespace cinn {
namespace ir {

/**
 * Collect the IR Nodes(without duplication) in the expression.
 */
std::set<Expr> CollectIRNodes(Expr x, std::function<bool(const Expr*)>&& teller, bool uniq_target = false);

/**
 * Collect the IR Nodes(without duplication and tensor's compute body) in the expression.
 */
std::set<Expr> CollectIRNodesWithoutTensor(Expr x, std::function<bool(const Expr*)>&& teller, bool uniq_target = false);

/**
 * Collect the IR Nodes from Block.
 */
std::vector<Expr> CollectIRNodesInOrder(Expr block, std::function<bool(const Expr*)>&& teller);

/**
 * Collect the tensors in Load nodes.
 */
std::set<Expr> CollectLoadTensors(Expr x, std::function<bool(const Expr*)>&& teller);

/**
 * Collect the tensors in Store nodes.
 */
std::set<Expr> CollectStoreTensors(Expr x, std::function<bool(const Expr*)>&& teller);

/**
 * Collect both the Store and Load nodes.
 */
std::set<Expr> CollectReferencedTensors(Expr x, const std::function<bool(const Expr*)>& teller);

std::map<std::string, Expr> CollectTensorMap(
    Expr x, std::function<bool(const Expr*)>&& extra_teller = [](const Expr* x) { return true; });

}  // namespace ir
}  // namespace cinn