---
title: 定义融合规则类
description: "在融合规则头文件（例如decode_bbox_v2_scope_fusion_pass.h）中，定义Scope融合规则类，继承自ScopeBasePass类。"
url: https://www.hiascend.com/document/detail/zh/TensorFlowCommunity/latest/Convergence/tfscopedevg/atlastfscopedev_11_0014.html
sourcePath: /source/zh/TensorFlowCommunity/910/Convergence/tfscopedevg/atlastfscopedev_11_0014.html
indexId: c1591915bed86633fedf8f22fbd05ca6402f4d70646f8fbdff96cd6a1f23eea887
---
# 定义融合规则类

在融合规则头文件（例如decode_bbox_v2_scope_fusion_pass.h）中，定义Scope融合规则类，继承自ScopeBasePass类。

```
#ifndef FRAMEWORK_TF_SCOPE_FUSION_PASS_DECODE_BBOX_V2_PASS_H_     // 条件编译
#define FRAMEWORK_TF_SCOPE_FUSION_PASS_DECODE_BBOX_V2_PASS_H_     // 宏定义

#include <string>
#include <vector>
#include "register/scope/scope_fusion_pass_register.h"

namespace ge {
    class DecodeBboxV2ScopeFusionPass : public ScopeBasePass {
    protected:
        std::vector<ScopeFusionPatterns> DefinePatterns() override;
        std::string PassName() override;
        Status LastMatchScopesAndOPs(std::shared_ptr<ScopeGraph> &scope_graph, std::vector<ScopesResult> &results) override;
        void GenerateFusionResult(const std::vector<Scope *> &scopes, FusionScopesResult *fusion_rlt) override;
    private:
        void GenScopePatterns(ScopeFusionPatterns &patterns);
    };
}  // namespace ge
#endif  // FRAMEWORK_TF_SCOPE_FUSION_PASS_DECODE_BBOX_V2_PASS_H_ 结束条件编译
```