1 files changed, 115 insertions, 0 deletions
diff --git a/clang/lib/StaticAnalyzer/Frontend/AnalyzerHelpFlags.cpp b/clang/lib/StaticAnalyzer/Frontend/AnalyzerHelpFlags.cpp
new file mode 100644
index 000000000000..eb6014a0629d
--- /dev/null
+++ b/clang/lib/StaticAnalyzer/Frontend/AnalyzerHelpFlags.cpp
@@ -0,0 +1,115 @@
+//===--- CheckerRegistration.cpp - Registration for the Analyzer Checkers -===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+//
+// Defines the registration function for the analyzer checkers.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/StaticAnalyzer/Frontend/AnalyzerHelpFlags.h"
+#include "clang/Basic/Diagnostic.h"
+#include "clang/Frontend/CompilerInstance.h"
+#include "clang/Frontend/FrontendDiagnostic.h"
+#include "clang/StaticAnalyzer/Core/AnalyzerOptions.h"
+#include "clang/StaticAnalyzer/Core/CheckerManager.h"
+#include "clang/StaticAnalyzer/Frontend/CheckerRegistry.h"
+#include "clang/StaticAnalyzer/Frontend/FrontendActions.h"
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/Support/raw_ostream.h"
+#include <memory>
+
+using namespace clang;
+using namespace ento;
+
+void ento::printCheckerHelp(raw_ostream &out, CompilerInstance &CI) {
+  out << "OVERVIEW: Clang Static Analyzer Checkers List\n\n";
+  out << "USAGE: -analyzer-checker <CHECKER or PACKAGE,...>\n\n";
+
+  auto CheckerMgr = std::make_unique<CheckerManager>(
+      *CI.getAnalyzerOpts(), CI.getLangOpts(), CI.getDiagnostics(),
+      CI.getFrontendOpts().Plugins);
+
+  CheckerMgr->getCheckerRegistryData().printCheckerWithDescList(
+      *CI.getAnalyzerOpts(), out);
+}
+
+void ento::printEnabledCheckerList(raw_ostream &out, CompilerInstance &CI) {
+  out << "OVERVIEW: Clang Static Analyzer Enabled Checkers List\n\n";
+
+  auto CheckerMgr = std::make_unique<CheckerManager>(
+      *CI.getAnalyzerOpts(), CI.getLangOpts(), CI.getDiagnostics(),
+      CI.getFrontendOpts().Plugins);
+
+  CheckerMgr->getCheckerRegistryData().printEnabledCheckerList(out);
+}
+
+void ento::printCheckerConfigList(raw_ostream &out, CompilerInstance &CI) {
+
+  auto CheckerMgr = std::make_unique<CheckerManager>(
+      *CI.getAnalyzerOpts(), CI.getLangOpts(), CI.getDiagnostics(),
+      CI.getFrontendOpts().Plugins);
+
+  CheckerMgr->getCheckerRegistryData().printCheckerOptionList(
+      *CI.getAnalyzerOpts(), out);
+}
+
+void ento::printAnalyzerConfigList(raw_ostream &out) {
+  // FIXME: This message sounds scary, should be scary, but incorrectly states
+  // that all configs are super dangerous. In reality, many of them should be
+  // accessible to the user. We should create a user-facing subset of config
+  // options under a different frontend flag.
+  out << R"(
+OVERVIEW: Clang Static Analyzer -analyzer-config Option List
+
+The following list of configurations are meant for development purposes only, as
+some of the variables they define are set to result in the most optimal
+analysis. Setting them to other values may drastically change how the analyzer
+behaves, and may even result in instabilities, crashes!
+
+USAGE: -analyzer-config <OPTION1=VALUE,OPTION2=VALUE,...>
+       -analyzer-config OPTION1=VALUE, -analyzer-config OPTION2=VALUE, ...
+OPTIONS:
+)";
+
+  using OptionAndDescriptionTy = std::pair<StringRef, std::string>;
+  OptionAndDescriptionTy PrintableOptions[] = {
+#define ANALYZER_OPTION(TYPE, NAME, CMDFLAG, DESC, DEFAULT_VAL)                \
+    {                                                                          \
+      CMDFLAG,                                                                 \
+      llvm::Twine(llvm::Twine() + "(" +                                        \
+                  (StringRef(#TYPE) == "StringRef" ? "string" : #TYPE ) +      \
+                  ") " DESC                                                    \
+                  " (default: " #DEFAULT_VAL ")").str()                        \
+    },
+
+#define ANALYZER_OPTION_DEPENDS_ON_USER_MODE(TYPE, NAME, CMDFLAG, DESC,        \
+                                             SHALLOW_VAL, DEEP_VAL)            \
+    {                                                                          \
+      CMDFLAG,                                                                 \
+      llvm::Twine(llvm::Twine() + "(" +                                        \
+                  (StringRef(#TYPE) == "StringRef" ? "string" : #TYPE ) +      \
+                  ") " DESC                                                    \
+                  " (default: " #SHALLOW_VAL " in shallow mode, " #DEEP_VAL    \
+                  " in deep mode)").str()                                      \
+    },
+#include "clang/StaticAnalyzer/Core/AnalyzerOptions.def"
+#undef ANALYZER_OPTION
+#undef ANALYZER_OPTION_DEPENDS_ON_USER_MODE
+  };
+
+  llvm::sort(PrintableOptions, [](const OptionAndDescriptionTy &LHS,
+                                  const OptionAndDescriptionTy &RHS) {
+    return LHS.first < RHS.first;
+  });
+
+  for (const auto &Pair : PrintableOptions) {
+    AnalyzerOptions::printFormattedEntry(out, Pair, /*InitialPad*/ 2,
+                                         /*EntryWidth*/ 30,
+                                         /*MinLineWidth*/ 70);
+    out << "\n\n";
+  }
+}