Sadikov Damir. Lab №1. Var 3 (#12)

Deprecated plugin

Author: Damlrca

clang/labs/lab1/sadikov_damir/CMakeLists.txt

@@ -0,0 +1,14 @@
+add_llvm_library(DeprecatedPlugin_SadikovD MODULE DeprecatedPlugin_SadikovD.cpp PLUGIN_TOOL clang)
+
+if(WIN32 OR CYGWIN)
+  set(LLVM_LINK_COMPONENTS
+    Support
+  )
+  clang_target_link_libraries(DeprecatedPlugin_SadikovD PRIVATE
+    clangAST
+    clangBasic
+    clangFrontend
+    )
+endif()
+
+set(CLANG_TEST_DEPS "DeprecatedPlugin_SadikovD" ${CLANG_TEST_DEPS} PARENT_SCOPE)

clang/labs/lab1/sadikov_damir/DeprecatedPlugin_SadikovD.cpp

@@ -0,0 +1,50 @@
+#include "clang/AST/ASTConsumer.h"
+#include "clang/AST/RecursiveASTVisitor.h"
+#include "clang/Frontend/CompilerInstance.h"
+#include "clang/Frontend/FrontendPluginRegistry.h"
+
+class DeprecatedPluginVisitor
+    : public clang::RecursiveASTVisitor<DeprecatedPluginVisitor> {
+public:
+  bool VisitFunctionDecl(clang::FunctionDecl *FunDec) {
+    std::string FunctionName = FunDec->getNameInfo().getAsString();
+    if (FunctionName.find("deprecated") != std::string::npos) {
+      clang::DiagnosticsEngine &Diags =
+          FunDec->getASTContext().getDiagnostics();
+      unsigned DiagID =
+          Diags.getCustomDiagID(clang::DiagnosticsEngine::Warning,
+                                "Name of function '%0' contains 'deprecated'");
+      Diags.Report(FunDec->getLocation(), DiagID) << FunctionName;
+    }
+    return true;
+  }
+};
+
+class DeprecatedPluginConsumer : public clang::ASTConsumer {
+private:
+  DeprecatedPluginVisitor Visitor;
+
+public:
+  void HandleTranslationUnit(clang::ASTContext &Context) override {
+    Visitor.TraverseDecl(Context.getTranslationUnitDecl());
+  }
+};
+
+class DeprecatedPluginAction : public clang::PluginASTAction {
+public:
+  std::unique_ptr<clang::ASTConsumer>
+  CreateASTConsumer(clang::CompilerInstance &Compiler,
+                    llvm::StringRef InFile) override {
+    return std::make_unique<DeprecatedPluginConsumer>();
+  }
+
+protected:
+  bool ParseArgs(const clang::CompilerInstance &Compiler,
+                 const std::vector<std::string> &args) override {
+    return true;
+  }
+};
+
+static clang::FrontendPluginRegistry::Add<DeprecatedPluginAction>
+    X("DeprecatedPlugin_SadikovD",
+      "Warning if function name contains 'deprecated'");

clang/test/lab1/sadikov_damir/DeprecatedPluginTests_SadikovD.cpp

@@ -0,0 +1,23 @@
+// RUN: %clang -cc1 -load %llvmshlibdir/DeprecatedPlugin_SadikovD%pluginext -plugin DeprecatedPlugin_SadikovD %s 2>&1 | FileCheck %s
+
+// CHECK-NOT: warning: Name of function 'just_regular_sum_function' contains 'deprecated'
+int just_regular_sum_function(int a, int b) {
+	return a + b;
+}
+
+// CHECK: warning: Name of function 'strange_deprecated_sum_function' contains 'deprecated'
+int strange_deprecated_sum_function(int a, int b) {
+	return a + b;
+}
+
+// CHECK-NOT: warning: Name of function 'IsItAlsoDeprecated' contains 'deprecated'
+int IsItAlsoDeprecated(int a, int b, int c) {
+	return a + b + c;
+}
+
+struct foo {
+// CHECK-NOT: warning: Name of function 'bar' contains 'deprecated'
+	void bar() {}
+// CHECK: warning: Name of function 'bar_deprecated' contains 'deprecated'
+	void bar_deprecated() {}
+};