clang-rename: implement renaming of classes inside static_cast

[vmiklos]

Summary

"Derived" in static_cast<Derived&>(...) wasn't renamed, nor in its
pointer equivalent.

[klimek]

test/clang-rename/StaticCastExpr.cpp

5–26

Please run this through clang-format.

[vmiklos]

Done.

[klimek]

lg

clang-rename/USRLocFinder.cpp

bool VisitCXXConstructExpr(const CXXConstructExpr *Expr) {
     if (getUSRForDecl(Decl) == USR) {
       // This takes care of 'new <name>' expressions.
       LocationsFound.push_back(Expr->getLocation());
     }
 
     return true;
   }
 
+  bool VisitCXXStaticCastExpr(clang::CXXStaticCastExpr *Expr) {
+    clang::QualType Type = Expr->getType();
+    // See if this a cast of a pointer.
+    const RecordDecl* Decl = Type->getPointeeCXXRecordDecl();
+    if (!Decl) {
+      // See if this is a cast of a reference.
+      Decl = Type->getAsCXXRecordDecl();
+    }
+
+    if (Decl && getUSRForDecl(Decl) == USR) {
+      SourceLocation Location = Expr->getTypeInfoAsWritten()->getTypeLoc().getBeginLoc();
+      LocationsFound.push_back(Location);
+    }
+
+    return true;
+  }
+
   // Non-visitors:
 
   // \brief Returns a list of unique locations. Duplicate or overlapping
   // locations are erroneous and should be reported!
   const std::vector<clang::SourceLocation> &getLocationsFound() const {
     return LocationsFound;
   }
 

test/clang-rename/StaticCastExpr.cpp

+// RUN: cat %s > %t.cpp
+// RUN: clang-rename -offset=150 -new-name=X %t.cpp -i --
+// RUN: sed 's,//.*,,' %t.cpp | FileCheck %s
+class Base {
+};
+
+class Derived : public Base {
+public:
+  int getValue() const {
+    return 0;
+  }
+};
+
+int main() {
+  Derived D;
+  const Base &Reference = D;
+  const Base *Pointer = &D;
+
+  static_cast<const Derived &>(Reference).getValue(); // CHECK: static_cast<const X &>
+  static_cast<const Derived *>(Pointer)->getValue();  // CHECK: static_cast<const X *>
+}
+
+// Use grep -FUbo 'Derived' <file> to get the correct offset of foo when changing
+// this file.