Merge "Add a command line option to suppress compilation errors"

am: 419ef1bf8e

Change-Id: I47a7612b5000ead27229108f2efac1269be26008

vndk/tools/header-checker/Android.bp

@@ -55,6 +55,7 @@ cc_binary_host {
     srcs: [
         "header-abi-dumper/src/abi_wrappers.cpp",
         "header-abi-dumper/src/ast_processing.cpp",
+        "header-abi-dumper/src/diagnostic_consumer.cpp",
         "header-abi-dumper/src/fixed_argv.cpp",
         "header-abi-dumper/src/frontend_action.cpp",
         "header-abi-dumper/src/frontend_action_factory.cpp",

vndk/tools/header-checker/header-abi-dumper/src/ast_processing.cpp

@@ -47,6 +47,10 @@ HeaderASTVisitor::HeaderASTVisitor(
       ast_caches_(ast_caches) {}
 
 bool HeaderASTVisitor::VisitRecordDecl(const clang::RecordDecl *decl) {
+  // Avoid segmentation fault in getASTRecordLayout.
+  if (decl->isInvalidDecl()) {
+    return true;
+  }
   // Skip forward declarations, dependent records. Also skip anonymous records
   // as they will be traversed through record fields.
   if (!decl->isThisDeclarationADefinition() ||
@@ -176,14 +180,8 @@ bool HeaderASTVisitor::TraverseDecl(clang::Decl *decl) {
 }
 
 HeaderASTConsumer::HeaderASTConsumer(
-    clang::CompilerInstance *compiler_instancep,
-    const std::string &out_dump_name,
-    std::set<std::string> &exported_headers,
-    abi_util::TextFormatIR text_format)
-    : cip_(compiler_instancep),
-      out_dump_name_(out_dump_name),
-      exported_headers_(exported_headers),
-      text_format_(text_format) {}
+    clang::CompilerInstance *compiler_instancep, HeaderCheckerOptions &options)
+    : cip_(compiler_instancep), options_(options) {}
 
 void HeaderASTConsumer::HandleTranslationUnit(clang::ASTContext &ctx) {
   clang::PrintingPolicy policy(ctx.getPrintingPolicy());
@@ -198,13 +196,15 @@ void HeaderASTConsumer::HandleTranslationUnit(clang::ASTContext &ctx) {
   const std::string &translation_unit_source =
       ABIWrapper::GetDeclSourceFile(translation_unit, cip_);
   ast_util::ASTCaches ast_caches(translation_unit_source);
-  if (!exported_headers_.empty()) {
-    exported_headers_.insert(translation_unit_source);
+  if (!options_.exported_headers_.empty()) {
+    options_.exported_headers_.insert(translation_unit_source);
   }
   std::unique_ptr<abi_util::IRDumper> ir_dumper =
-      abi_util::IRDumper::CreateIRDumper(text_format_, out_dump_name_);
-  HeaderASTVisitor v(mangle_contextp.get(), &ctx, cip_, exported_headers_,
-                     translation_unit, ir_dumper.get(), &ast_caches);
+      abi_util::IRDumper::CreateIRDumper(options_.text_format_,
+                                         options_.dump_name_);
+  HeaderASTVisitor v(mangle_contextp.get(), &ctx, cip_,
+                     options_.exported_headers_, translation_unit,
+                     ir_dumper.get(), &ast_caches);
 
   if (!v.TraverseDecl(translation_unit) || !ir_dumper->Dump()) {
     llvm::errs() << "Serialization to ostream failed\n";

vndk/tools/header-checker/header-abi-dumper/src/ast_processing.h

@@ -16,7 +16,7 @@
 #define AST_PROCESSING_H_
 
 #include "ast_util.h"
-#include "ir_representation.h"
+#include "header_checker.h"
 
 #include <clang/AST/AST.h>
 #include <clang/AST/ASTConsumer.h>
@@ -69,17 +69,13 @@ class HeaderASTVisitor
 class HeaderASTConsumer : public clang::ASTConsumer {
  public:
   HeaderASTConsumer(clang::CompilerInstance *compiler_instancep,
-                    const std::string &out_dump_name,
-                    std::set<std::string> &exported_headers,
-                    abi_util::TextFormatIR text_format);
+                    HeaderCheckerOptions &options);
 
   void HandleTranslationUnit(clang::ASTContext &ctx) override;
 
  private:
   clang::CompilerInstance *cip_;
-  const std::string &out_dump_name_;
-  std::set<std::string> &exported_headers_;
-  abi_util::TextFormatIR text_format_;
+  HeaderCheckerOptions &options_;
 };
 
 #endif  // AST_PROCESSING_H_

vndk/tools/header-checker/header-abi-dumper/src/diagnostic_consumer.cpp

@@ -0,0 +1,64 @@
+// Copyright (C) 2018 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "diagnostic_consumer.h"
+
+#include <clang/Basic/DiagnosticCategories.h>
+#include <clang/Basic/DiagnosticIDs.h>
+#include <clang/Lex/LexDiagnostic.h>
+
+HeaderCheckerDiagnosticConsumer::HeaderCheckerDiagnosticConsumer(
+    std::unique_ptr<clang::DiagnosticConsumer> wrapped)
+    : wrapped_(std::move(wrapped)) {}
+
+void HeaderCheckerDiagnosticConsumer::clear() {
+  // Default implementation resets warning/error count.
+  DiagnosticConsumer::clear();
+  wrapped_->clear();
+}
+
+void HeaderCheckerDiagnosticConsumer::BeginSourceFile(
+    const clang::LangOptions &lang_opts,
+    const clang::Preprocessor *preprocessor) {
+  wrapped_->BeginSourceFile(lang_opts, preprocessor);
+}
+
+void HeaderCheckerDiagnosticConsumer::EndSourceFile() {
+  wrapped_->EndSourceFile();
+}
+
+void HeaderCheckerDiagnosticConsumer::finish() { wrapped_->finish(); }
+
+bool HeaderCheckerDiagnosticConsumer::IncludeInDiagnosticCounts() const {
+  return false;
+}
+
+void HeaderCheckerDiagnosticConsumer::HandleDiagnostic(
+    clang::DiagnosticsEngine::Level level, const clang::Diagnostic &info) {
+  if (level < clang::DiagnosticsEngine::Level::Error) {
+    return;
+  }
+  unsigned id = info.getID();
+  if (id == clang::diag::err_pp_hash_error ||
+      id == clang::diag::fatal_too_many_errors) {
+    return;
+  }
+  unsigned category = clang::DiagnosticIDs::getCategoryNumberForDiag(id);
+  if (category == clang::diag::DiagCat_Semantic_Issue) {
+    return;
+  }
+  // Default implementation increases warning/error count.
+  DiagnosticConsumer::HandleDiagnostic(level, info);
+  wrapped_->HandleDiagnostic(level, info);
+}

vndk/tools/header-checker/header-abi-dumper/src/diagnostic_consumer.h

@@ -0,0 +1,37 @@
+// Copyright (C) 2018 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef DIAGNOSTIC_CONSUMER_H_
+#define DIAGNOSTIC_CONSUMER_H_
+
+#include <clang/Basic/Diagnostic.h>
+
+class HeaderCheckerDiagnosticConsumer : public clang::DiagnosticConsumer {
+ private:
+  std::unique_ptr<clang::DiagnosticConsumer> wrapped_;
+
+ public:
+  HeaderCheckerDiagnosticConsumer(
+      std::unique_ptr<clang::DiagnosticConsumer> wrapped);
+  void clear() override;
+  void BeginSourceFile(const clang::LangOptions &lang_opts,
+                       const clang::Preprocessor *preprocessor) override;
+  void EndSourceFile() override;
+  void finish() override;
+  bool IncludeInDiagnosticCounts() const override;
+  void HandleDiagnostic(clang::DiagnosticsEngine::Level level,
+                        const clang::Diagnostic &info) override;
+};
+
+#endif  // DIAGNOSTIC_CONSUMER_H_

vndk/tools/header-checker/header-abi-dumper/src/frontend_action.cpp

@@ -15,6 +15,7 @@
 #include "frontend_action.h"
 
 #include "ast_processing.h"
+#include "diagnostic_consumer.h"
 #include "header_abi_util.h"
 #include "ir_representation.h"
 
@@ -25,15 +26,29 @@
 #include <llvm/ADT/STLExtras.h>
 
 HeaderCheckerFrontendAction::HeaderCheckerFrontendAction(
-    const std::string &dump_name, std::set<std::string> &exported_headers,
-    abi_util::TextFormatIR text_format)
-    : dump_name_(dump_name), exported_headers_(exported_headers),
-      text_format_(text_format) {}
+    HeaderCheckerOptions &options)
+    : options_(options) {}
 
 std::unique_ptr<clang::ASTConsumer>
 HeaderCheckerFrontendAction::CreateASTConsumer(clang::CompilerInstance &ci,
                                                llvm::StringRef header_file) {
   // Create AST consumers.
-  return llvm::make_unique<HeaderASTConsumer>(&ci, dump_name_,
-                                              exported_headers_, text_format_);
+  return llvm::make_unique<HeaderASTConsumer>(&ci, options_);
+}
+
+bool HeaderCheckerFrontendAction::BeginInvocation(clang::CompilerInstance &ci) {
+  if (options_.suppress_errors_) {
+    clang::DiagnosticsEngine &diagnostics = ci.getDiagnostics();
+    diagnostics.setClient(
+        new HeaderCheckerDiagnosticConsumer(diagnostics.takeClient()),
+        /* ShouldOwnClient */ true);
+  }
+  return true;
+}
+
+bool HeaderCheckerFrontendAction::BeginSourceFileAction(
+    clang::CompilerInstance &ci) {
+  ci.getPreprocessor().SetSuppressIncludeNotFoundError(
+      options_.suppress_errors_);
+  return true;
 }

vndk/tools/header-checker/header-abi-dumper/src/frontend_action.h

@@ -15,7 +15,7 @@
 #ifndef FRONTEND_ACTION_H_
 #define FRONTEND_ACTION_H_
 
-#include "ir_representation.h"
+#include "header_checker.h"
 
 #include <clang/Frontend/FrontendAction.h>
 #include <llvm/ADT/StringRef.h>
@@ -32,19 +32,17 @@ namespace clang {
 
 class HeaderCheckerFrontendAction : public clang::ASTFrontendAction {
  private:
-  const std::string &dump_name_;
-  std::set<std::string> &exported_headers_;
-  abi_util::TextFormatIR text_format_;
+  HeaderCheckerOptions &options_;
 
  public:
-  HeaderCheckerFrontendAction(
-      const std::string &dump_name,
-      std::set<std::string> &exported_headers,
-      abi_util::TextFormatIR text_format);
+  HeaderCheckerFrontendAction(HeaderCheckerOptions &options);
 
  protected:
   std::unique_ptr<clang::ASTConsumer> CreateASTConsumer(
       clang::CompilerInstance &ci, llvm::StringRef header_file) override;
+
+  bool BeginInvocation(clang::CompilerInstance &ci) override;
+  bool BeginSourceFileAction(clang::CompilerInstance &ci) override;
 };
 
 #endif  // FRONTEND_ACTION_H_

vndk/tools/header-checker/header-abi-dumper/src/frontend_action_factory.cpp

@@ -19,13 +19,9 @@
 #include <clang/Frontend/FrontendActions.h>
 
 HeaderCheckerFrontendActionFactory::HeaderCheckerFrontendActionFactory(
-    const std::string &dump_name,
-    std::set<std::string> &exported_headers,
-    abi_util::TextFormatIR text_format)
-    : dump_name_(dump_name), exported_headers_(exported_headers),
-      text_format_(text_format) {}
+    HeaderCheckerOptions &options)
+    : options_(options) {}
 
 clang::FrontendAction *HeaderCheckerFrontendActionFactory::create() {
-  return new HeaderCheckerFrontendAction(dump_name_, exported_headers_,
-                                         text_format_);
+  return new HeaderCheckerFrontendAction(options_);
 }

vndk/tools/header-checker/header-abi-dumper/src/frontend_action_factory.h

@@ -15,6 +15,7 @@
 #ifndef FRONTEND_ACTION_FACTORY_H_
 #define FRONTEND_ACTION_FACTORY_H_
 
+#include "frontend_action.h"
 #include "ir_representation.h"
 
 #include <clang/Tooling/Tooling.h>
@@ -24,15 +25,10 @@
 class HeaderCheckerFrontendActionFactory
     : public clang::tooling::FrontendActionFactory {
  private:
-  const std::string &dump_name_;
-  std::set<std::string> &exported_headers_;
-  abi_util::TextFormatIR text_format_;
+  HeaderCheckerOptions &options_;
 
  public:
-  HeaderCheckerFrontendActionFactory(
-      const std::string &dump_name,
-      std::set<std::string> &exported_headers,
-      abi_util::TextFormatIR text_format);
+  HeaderCheckerFrontendActionFactory(HeaderCheckerOptions &options);
 
   clang::FrontendAction *create() override;
 };

vndk/tools/header-checker/header-abi-dumper/src/header_checker.cpp

@@ -12,6 +12,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+#include "header_checker.h"
+
 #include "fixed_argv.h"
 #include "frontend_action_factory.h"
 #include "header_abi_util.h"
@@ -50,6 +52,11 @@ static llvm::cl::opt<bool> no_filter(
     "no-filter", llvm::cl::desc("Do not filter any abi"), llvm::cl::Optional,
     llvm::cl::cat(header_checker_category));
 
+static llvm::cl::opt<bool> suppress_errors(
+    "suppress-errors",
+    llvm::cl::desc("Suppress preprocess and semantic errors"),
+    llvm::cl::Optional, llvm::cl::cat(header_checker_category));
+
 static llvm::cl::opt<abi_util::TextFormatIR> output_format(
     "output-format", llvm::cl::desc("Specify format of output dump file"),
     llvm::cl::values(clEnumValN(abi_util::TextFormatIR::ProtobufTextFormat,
@@ -72,7 +79,6 @@ static void HideIrrelevantCommandLineOptions() {
   }
 }
 
-
 int main(int argc, const char **argv) {
   HideIrrelevantCommandLineOptions();
 
@@ -124,11 +130,11 @@ int main(int argc, const char **argv) {
 
   // Initialize clang tools and run front-end action.
   std::vector<std::string> header_files{ header_file };
+  HeaderCheckerOptions options(out_dump, std::move(exported_headers),
+                               output_format, suppress_errors);
 
   clang::tooling::ClangTool tool(*compilations, header_files);
   std::unique_ptr<clang::tooling::FrontendActionFactory> factory(
-      new HeaderCheckerFrontendActionFactory(out_dump, exported_headers,
-                                             output_format));
-
+      new HeaderCheckerFrontendActionFactory(options));
   return tool.run(factory.get());
 }

vndk/tools/header-checker/header-abi-dumper/src/header_checker.h

@@ -0,0 +1,39 @@
+// Copyright (C) 2018 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef HEADER_CHECKER_H_
+#define HEADER_CHECKER_H_
+
+#include "ir_representation.h"
+
+#include <set>
+#include <string>
+
+class HeaderCheckerOptions {
+ public:
+  std::string dump_name_;
+  std::set<std::string> exported_headers_;
+  abi_util::TextFormatIR text_format_;
+  bool suppress_errors_;
+
+ public:
+  HeaderCheckerOptions(std::string dump_name,
+                       std::set<std::string> exported_headers,
+                       abi_util::TextFormatIR text_format, bool suppress_errors)
+      : dump_name_(std::move(dump_name)),
+        exported_headers_(std::move(exported_headers)),
+        text_format_(text_format), suppress_errors_(suppress_errors) {}
+};
+
+#endif  // HEADER_CHECKER_H_