src/sem/call_target.h

// Copyright 2021 The Tint Authors.
//
// 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.

#ifndef SRC_SEM_CALL_TARGET_H_
#define SRC_SEM_CALL_TARGET_H_

#include <vector>

#include "src/sem/node.h"
#include "src/sem/sampler_type.h"
#include "src/sem/variable.h"
#include "src/utils/hash.h"

namespace tint {
namespace sem {
// Forward declarations
class Type;

/// @param parameters the list of parameters
/// @param usage the parameter usage to find
/// @returns the index of the parameter with the given usage, or -1 if no
/// parameter with the given usage exists.
int IndexOf(const ParameterList& parameters, ParameterUsage usage);

/// CallTarget is the base for callable functions
class CallTarget : public Castable<CallTarget, Node> {
 public:
  /// Constructor
  /// @param return_type the return type of the call target
  /// @param parameters the parameters for the call target
  CallTarget(sem::Type* return_type, const ParameterList& parameters);

  /// Copy constructor
  CallTarget(const CallTarget&);

  /// @return the return type of the call target
  sem::Type* ReturnType() const { return return_type_; }

  /// Destructor
  ~CallTarget() override;

  /// @return the parameters of the call target
  const ParameterList& Parameters() const { return parameters_; }

 private:
  sem::Type* const return_type_;
  ParameterList const parameters_;
};

}  // namespace sem
}  // namespace tint

#endif  // SRC_SEM_CALL_TARGET_H_