茂之钳
477d13dc80
Root cause: using declarations inside anonymous namespace don't propagate to public functions defined after the anonymous namespace closes. Fix: - using SSICurveData; and using ClassResult; at vde::brep scope - Remove self-referencing using vde::brep::ClassResult - Remove duplicate using from inside anonymous namespace
73 lines
2.2 KiB
Markdown
73 lines
2.2 KiB
Markdown
---
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id: VDE-016
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status: fixed
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severity: critical
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category: bug
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date: 2026-07-27
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updated: 2026-07-27
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reporter: ViewDesign
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related: VDE-001, VDE-005, VDE-010
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---
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# VDE-016: ssi_boolean.cpp 名称解析 — using 声明位置错误
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## 问题描述
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v1.0.4 在匿名 namespace **内部**（line 57）添加了 `using vde::brep::SSICurveData;`，但这些 using 声明仅在匿名 namespace 内部有效。匿名 namespace 关闭后，后续的公共函数（line 509+）仍然找不到 `SSICurveData` 和 `ClassResult`。
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## 编译错误 (v1.0.4)
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```
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error: 'SSICurveData' was not declared in this scope
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at line 512 (compute_all_ssi return type)
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error: 'ClassResult' was not declared in this scope
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at line 646 (classify_points return type)
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error: 'begin'/'end' was not declared in this scope (级联失败)
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```
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## 根因
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```cpp
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// ssi_boolean.cpp 当前结构
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namespace vde::brep { // line 34
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struct SSICurveData; // line 43
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using vde::brep::ClassResult; // line 44 — 自引用，无效
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struct SSICurveData { ... }; // line 47
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namespace { // line 56
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using vde::brep::SSICurveData; // ← 仅在匿名 ns 内有效！
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using vde::brep::ClassResult; // ← 同上
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...
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} // line 92 或 432 关闭
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// 以下公共函数在 vde::brep 作用域，using 声明已失效
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std::vector<SSICurveData> compute_all_ssi(...) { // ← 找不到
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std::vector<...ClassResult> classify_points(...) { // ← 找不到
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}
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```
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## 正确修复
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将 using 声明放在 `vde::brep` 作用域（匿名 namespace 之外）：
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```cpp
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namespace vde::brep {
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struct SSICurveData;
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using SSICurveData; // ← 放在这里（vde::brep 级别）
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using ClassResult; // ← 替代自引用的 using vde::brep::ClassResult;
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struct SSICurveData { ... };
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namespace {
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// 不需要这里的 using 了
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...
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}
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// 公共函数现在可以找到 SSICurveData 和 ClassResult
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std::vector<SSICurveData> compute_all_ssi(...) { ... }
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}
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```
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## 当前 Workaround
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ViewDesign 排除 vde_brep 及其依赖。
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