Dependencies: Implement SourceFileDepGraphNode::dump()

Author: slavapestov

include/swift/AST/FineGrainedDependencies.h

@@ -741,6 +741,9 @@ class SourceFileDepGraphNode : public DepGraphNode {
                                                            : "somewhere else");
   }
 
+  SWIFT_DEBUG_DUMP;
+  void dump(llvm::raw_ostream &os) const;
+
   bool verify() const {
     DepGraphNode::verify();
     assert(getIsProvides() || isDepends());

lib/AST/FineGrainedDependencies.cpp

@@ -341,6 +341,19 @@ void DepGraphNode::dump(raw_ostream &os) const {
     llvm::errs() << "no fingerprint";
 }
 
+void SourceFileDepGraphNode::dump() const {
+  dump(llvm::errs());
+}
+
+void SourceFileDepGraphNode::dump(raw_ostream &os) const {
+  DepGraphNode::dump(os);
+  os << " sequence number: " << sequenceNumber;
+  os << " is provides: " << isProvides;
+  os << " depends on:";
+  for (auto def : defsIDependUpon)
+    os << " " << def;
+}
+
 std::string DepGraphNode::humanReadableName(StringRef where) const {
 
   return getKey().humanReadableName() +