[clang] [clang][ssaf] Add cpp-bounded-buffers source transformation (PR #210457)

[Balázs Benics via cfe-commits]

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@@ -0,0 +1,397 @@
+//===- CppBoundedBuffersTest.cpp ------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/ScalableStaticAnalysis/SourceTransformation/Transformations/CppBoundedBuffers.h"
+#include "FindDecl.h"
+#include "TestFixture.h"
+#include "clang/AST/ASTContext.h"
+#include "clang/AST/Decl.h"
+#include "clang/Basic/Sarif.h"
+#include "clang/ScalableStaticAnalysis/Analyses/EntityPointerLevel/EntityPointerLevel.h"
+#include "clang/ScalableStaticAnalysis/Analyses/UnsafeBufferUsage/UnsafeBufferUsageAnalysis.h"
+#include "clang/ScalableStaticAnalysis/Core/ASTEntityMapping.h"
+#include "clang/ScalableStaticAnalysis/Core/Model/EntityId.h"
+#include "clang/ScalableStaticAnalysis/Core/Model/EntityIdTable.h"
+#include "clang/ScalableStaticAnalysis/Core/Model/EntityName.h"
+#include "clang/ScalableStaticAnalysis/Core/WholeProgramAnalysis/WPASuite.h"
+#include "clang/ScalableStaticAnalysis/SourceTransformation/SourceEditEmitter.h"
+#include "clang/ScalableStaticAnalysis/SourceTransformation/TransformationReportEmitter.h"
+#include "clang/Tooling/Core/Replacement.h"
+#include "clang/Tooling/Tooling.h"
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/SmallSet.h"
+#include "llvm/Support/Error.h"
+#include "gtest/gtest.h"
+#include <memory>
+#include <optional>
+#include <string>
+#include <vector>
+
+using namespace clang;
+using namespace clang::ssaf;
+
+namespace {
+
+class RecordingEditEmitter : public SourceEditEmitter {
+public:
+  std::vector<tooling::Replacement> Replacements;
+
+  void addReplacement(tooling::Replacement R) override {
+    Replacements.push_back(std::move(R));
+  }
+};
+
+class RecordingReportEmitter : public TransformationReportEmitter {
+public:
+  struct Entry {
+    std::string RuleId;
+    SarifResultLevel Level;
+    std::string Message;
+  };
+  std::vector<Entry> Results;
+
+  void addResult(StringRef RuleId, SarifResultLevel Level, CharSourceRange,
+                 StringRef Message) override {
+    Results.push_back({RuleId.str(), Level, Message.str()});
+  }
+};
+
+std::optional<EntityName> varEntity(StringRef Name, ASTContext &Ctx) {
+  return getEntityName(findDeclByName<VarDecl>(Name, Ctx));
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steakhal wrote:

I'm so glad we reuse `findDeclByName`:D I was prepared for yet another way of testing things.

https://github.com/llvm/llvm-project/pull/210457