[analyzer] Overhauling of the checker registration mechanism.

-Checkers will be defined in the tablegen file 'Checkers.td'.
-Apart from checkers, we can define checker "packages" that will contain a collection of checkers.
-Checkers can be enabled with -analyzer-checker=<name> and disabled with -analyzer-disable-checker=<name> e.g:
	Enable checkers from 'cocoa' and 'corefoundation' packages except the self-initialization checker:
	-analyzer-checker=cocoa -analyzer-checker=corefoundation -analyzer-disable-checker=cocoa.SelfInit
-Introduces CheckerManager and CheckerProvider. CheckerProviders get the set of checker names to enable/disable and
 register them with the CheckerManager which will be the entry point for all checker-related functionality.

Currently only the self-initialization checker takes advantage of the new mechanism.

llvm-svn: 125503

1 files changed, 50 insertions, 0 deletions

diff --git a/clang/lib/StaticAnalyzer/Frontend/CheckerRegistration.cpp b/clang/lib/StaticAnalyzer/Frontend/CheckerRegistration.cpp
new file mode 100644
index 00000000000..ca25f718231
--- /dev/null
+++ b/clang/lib/StaticAnalyzer/Frontend/CheckerRegistration.cpp
@@ -0,0 +1,50 @@
+//===--- CheckerRegistration.cpp - Registration for the Analyzer Checkers -===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Defines the registration function for the analyzer checkers.
+//
+//===----------------------------------------------------------------------===//
+
+#include "AnalysisConsumer.h"
+#include "../Checkers/ClangSACheckerProvider.h"
+#include "clang/StaticAnalyzer/Core/CheckerManager.h"
+#include "clang/StaticAnalyzer/Core/CheckerProvider.h"
+#include "clang/Frontend/AnalyzerOptions.h"
+#include "clang/Frontend/FrontendDiagnostic.h"
+#include "clang/Basic/Diagnostic.h"
+#include "llvm/ADT/OwningPtr.h"
+#include "llvm/ADT/SmallVector.h"
+
+using namespace clang;
+using namespace ento;
+
+CheckerManager *ento::registerCheckers(const AnalyzerOptions &opts,
+                                       Diagnostic &diags) {
+  llvm::OwningPtr<CheckerManager> checkerMgr(new CheckerManager());
+
+  llvm::SmallVector<CheckerOptInfo, 8> checkerOpts;
+  for (unsigned i = 0, e = opts.CheckersControlList.size(); i != e; ++i) {
+    const std::pair<std::string, bool> &opt = opts.CheckersControlList[i];
+    checkerOpts.push_back(CheckerOptInfo(opt.first.c_str(), opt.second));
+  }
+
+  llvm::OwningPtr<CheckerProvider> provider(createClangSACheckerProvider());
+  provider->registerCheckers(*checkerMgr,
+                             checkerOpts.data(), checkerOpts.size());
+
+  // FIXME: Load CheckerProviders from plugins.
+
+  for (unsigned i = 0, e = checkerOpts.size(); i != e; ++i) {
+    if (checkerOpts[i].isUnclaimed())
+      diags.Report(diag::warn_unkwown_analyzer_checker)
+          << checkerOpts[i].getName();
+  }
+
+  return checkerMgr.take();
+}