text: // 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_TRANSFORM_REMOVE_UNREACHABLE_STATEMENTS_H_
  #define SRC_TRANSFORM_REMOVE_UNREACHABLE_STATEMENTS_H_
  
  #include <string>
  #include <unordered_map>
  
  #include "src/transform/transform.h"
  
  namespace tint {
  namespace transform {
  
  /// RemoveUnreachableStatements is a Transform that removes all statements
  /// marked as unreachable.
  class RemoveUnreachableStatements
      : public Castable<RemoveUnreachableStatements, Transform> {
   public:
    /// Constructor
    RemoveUnreachableStatements();
  
    /// Destructor
    ~RemoveUnreachableStatements() override;
  
    /// @param program the program to inspect
    /// @param data optional extra transform-specific input data
    /// @returns true if this transform should be run for the given program
    bool ShouldRun(const Program* program,
                   const DataMap& data = {}) const override;
  
   protected:
    /// Runs the transform using the CloneContext built for transforming a
    /// program. Run() is responsible for calling Clone() on the CloneContext.
    /// @param ctx the CloneContext primed with the input program and
    /// ProgramBuilder
    /// @param inputs optional extra transform-specific input data
    /// @param outputs optional extra transform-specific output data
    void Run(CloneContext& ctx,
             const DataMap& inputs,
             DataMap& outputs) const override;
  };
  
  }  // namespace transform
  }  // namespace tint
  
  #endif  // SRC_TRANSFORM_REMOVE_UNREACHABLE_STATEMENTS_H_
  