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// Copyright (c) 2009 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COURGETTE_ADJUSTMENT_METHOD_H_
#define COURGETTE_ADJUSTMENT_METHOD_H_
#include "base/basictypes.h"
namespace courgette {
class AssemblyProgram;
class AdjustmentMethod {
public:
// Factory methods for making adjusters.
// Returns the adjustment method used in production.
static AdjustmentMethod* MakeProductionAdjustmentMethod() {
return MakeShingleAdjustmentMethod();
}
// Returns and adjustement method that makes no adjustments.
static AdjustmentMethod* MakeNullAdjustmentMethod();
// Returns the original adjustment method.
static AdjustmentMethod* MakeTrieAdjustmentMethod();
// Returns the new shingle tiling adjustment method.
static AdjustmentMethod* MakeShingleAdjustmentMethod();
// AdjustmentMethod interface:
// Adjusts |program| to increase similarity to |model|. |program| can be
// changed in any way provided that it still produces the same output when
// assembled.
virtual bool Adjust(const AssemblyProgram& model,
AssemblyProgram* program) = 0;
// Deletes 'this' adjustment method.
virtual void Destroy();
protected:
AdjustmentMethod() {}
virtual ~AdjustmentMethod() {}
DISALLOW_COPY_AND_ASSIGN(AdjustmentMethod);
};
} // namespace courgette
#endif // COURGETTE_ADJUSTMENT_METHOD_H_
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