[analyzer][NFC] Inline AnalyzerOptions::getUserMode()

[steakhal]

Summary

When I read the code I found it easier to reason about if getUserMode
is inlined. It might be a personal preference though.

[martong]

clang/include/clang/StaticAnalyzer/Core/AnalyzerOptions.h

362–364

I would miss this comment.

[steakhal]

clang/include/clang/StaticAnalyzer/Core/AnalyzerOptions.h

362–364

Which part do you miss?

The AnalyzerOptions.def already has a half descent description about this:

(string) Controls the high-level analyzer mode, which influences the default settings for some of the lower-level config options (such as IPAMode). Value: "deep", "shallow".

If you insist, let me know what comment should I put and where.

[martong]

clang/include/clang/StaticAnalyzer/Core/AnalyzerOptions.h

362–364

If AnalyzerOptions.def has it then it was already redundant, so okay then.

clang/include/clang/StaticAnalyzer/Core/AnalyzerOptions.h

#undef ANALYZER_OPTION_DEPENDS_ON_USER_MODE
   /// ones.
   StringRef getCheckerStringOption(StringRef CheckerName, StringRef OptionName,
                                    bool SearchInParents = false) const;
 
   StringRef getCheckerStringOption(const ento::CheckerBase *C,
                                    StringRef OptionName,
                                    bool SearchInParents = false) const;
 
-  /// Retrieves and sets the UserMode. This is a high-level option,
-  /// which is used to set other low-level options. It is not accessible
-  /// outside of AnalyzerOptions.
-  UserModeKind getUserMode() const;
-
   ExplorationStrategyKind getExplorationStrategy() const;
   CTUPhase1InliningKind getCTUPhase1Inlining() const;
 
   /// Returns the inter-procedural analysis mode.
   IPAKind getIPAMode() const;
 
   /// Returns the option controlling which C++ member functions will be
   /// considered for inlining.

 //===----------------------------------------------------------------------===//
 // We'll use AnalyzerOptions in the frontend, but we can't link the frontend
 // with clangStaticAnalyzerCore, because clangStaticAnalyzerCore depends on
 // clangFrontend.
 //
 // For this reason, implement some methods in this header file.
 //===----------------------------------------------------------------------===//
 
-inline UserModeKind AnalyzerOptions::getUserMode() const {
-  auto K = llvm::StringSwitch<llvm::Optional<UserModeKind>>(UserMode)
-    .Case("shallow", UMK_Shallow)
-    .Case("deep", UMK_Deep)
-    .Default(None);
-  assert(K.hasValue() && "User mode is invalid.");
-  return K.getValue();
-}
-
 inline std::vector<StringRef>
 AnalyzerOptions::getRegisteredCheckers(bool IncludeExperimental) {
   static constexpr llvm::StringLiteral StaticAnalyzerCheckerNames[] = {
 #define GET_CHECKERS
 #define CHECKER(FULLNAME, CLASS, HELPTEXT, DOC_URI, IS_HIDDEN)                 \
   llvm::StringLiteral(FULLNAME),
 #include "clang/StaticAnalyzer/Checkers/Checkers.inc"
 #undef CHECKER

clang/lib/Frontend/CompilerInvocation.cpp

static void initOption(AnalyzerOptions::ConfigTable &Config,
   if (Diags && HasFailed)
     Diags->Report(diag::err_analyzer_config_invalid_input)
       << Name << "an unsigned";
 }
 
 static void parseAnalyzerConfigs(AnalyzerOptions &AnOpts,
                                  DiagnosticsEngine *Diags) {
   // TODO: There's no need to store the entire configtable, it'd be plenty
-  // enough tostore checker options.
+  // enough to store checker options.
 
 #define ANALYZER_OPTION(TYPE, NAME, CMDFLAG, DESC, DEFAULT_VAL)                \
   initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG, DEFAULT_VAL);
+#define ANALYZER_OPTION_DEPENDS_ON_USER_MODE(...)
+#include "clang/StaticAnalyzer/Core/AnalyzerOptions.def"
+
+  assert(AnOpts.UserMode == "shallow" || AnOpts.UserMode == "deep");
+  const bool InShallowMode = AnOpts.UserMode == "shallow";
 
+#define ANALYZER_OPTION(...)
 #define ANALYZER_OPTION_DEPENDS_ON_USER_MODE(TYPE, NAME, CMDFLAG, DESC,        \
-                                           SHALLOW_VAL, DEEP_VAL)              \
-  switch (AnOpts.getUserMode()) {                                              \
-  case UMK_Shallow:                                                            \
-    initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG, SHALLOW_VAL);       \
-    break;                                                                     \
-  case UMK_Deep:                                                               \
-    initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG, DEEP_VAL);          \
-    break;                                                                     \
-  }                                                                            \
-
+                                             SHALLOW_VAL, DEEP_VAL)            \
+  initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG,                       \
+             InShallowMode ? SHALLOW_VAL : DEEP_VAL);
 #include "clang/StaticAnalyzer/Core/AnalyzerOptions.def"
-#undef ANALYZER_OPTION
-#undef ANALYZER_OPTION_DEPENDS_ON_USER_MODE
 
   // At this point, AnalyzerOptions is configured. Let's validate some options.
 
   // FIXME: Here we try to validate the silenced checkers or packages are valid.
   // The current approach only validates the registered checkers which does not
   // contain the runtime enabled checkers and optimally we would validate both.
   if (!AnOpts.RawSilencedCheckersAndPackages.empty()) {
     std::vector<StringRef> Checkers =