~MDScope() {}
public:
- Metadata *getFile() const { return getOperand(0); }
+ /// \brief Return the underlying file.
+ ///
+ /// An \a MDFile is an \a MDScope, but it doesn't point at a separate file
+ /// (it\em is the file). If \c this is an \a MDFile, we need to return \c
+ /// this. Otherwise, return the first operand, which is where all other
+ /// subclasses store their file pointer.
+ Metadata *getFile() const {
+ return isa<MDFile>(this) ? const_cast<MDScope *>(this) : getOperand(0);
+ }
static bool classof(const Metadata *MD) {
switch (MD->getMetadataID()) {