[analyzer] Introduce "event" mechanism in CheckerManager.
A checker can register as receiver/listener of "events" (basically it registers a callback
with a function getting called with an argument of the event type) and other checkers can
register as "dispatchers" and can pass an event object to all the listeners.
This allows cooperation amongst checkers but with very loose coupling.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126658 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/StaticAnalyzer/Core/CheckerManager.cpp b/lib/StaticAnalyzer/Core/CheckerManager.cpp
index 4776f57..74f47e4 100644
--- a/lib/StaticAnalyzer/Core/CheckerManager.cpp
+++ b/lib/StaticAnalyzer/Core/CheckerManager.cpp
@@ -20,6 +20,16 @@
using namespace clang;
using namespace ento;
+void CheckerManager::finishedCheckerRegistration() {
+#ifndef NDEBUG
+ // Make sure that for every event that has listeners, there is at least
+ // one dispatcher registered for it.
+ for (llvm::DenseMap<EventTag, EventInfo>::iterator
+ I = Events.begin(), E = Events.end(); I != E; ++I)
+ assert(I->second.HasDispatcher && "No dispatcher registered for an event");
+#endif
+}
+
//===----------------------------------------------------------------------===//
// Functions for running checkers for AST traversing..
//===----------------------------------------------------------------------===//
diff --git a/lib/StaticAnalyzer/Frontend/CheckerRegistration.cpp b/lib/StaticAnalyzer/Frontend/CheckerRegistration.cpp
index 677e20c..0484cbe 100644
--- a/lib/StaticAnalyzer/Frontend/CheckerRegistration.cpp
+++ b/lib/StaticAnalyzer/Frontend/CheckerRegistration.cpp
@@ -43,6 +43,8 @@
// FIXME: Load CheckerProviders from plugins.
+ checkerMgr->finishedCheckerRegistration();
+
for (unsigned i = 0, e = checkerOpts.size(); i != e; ++i) {
if (checkerOpts[i].isUnclaimed())
diags.Report(diag::warn_unkwown_analyzer_checker)