Add a way to get the context of any particular scope.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187212 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/llvm/DebugInfo.h b/include/llvm/DebugInfo.h
index ae7bf04..9fb12f8 100644
--- a/include/llvm/DebugInfo.h
+++ b/include/llvm/DebugInfo.h
@@ -187,6 +187,9 @@
public:
explicit DIScope(const MDNode *N = 0) : DIDescriptor (N) {}
+ /// Gets the parent scope for this scope node or returns a
+ /// default constructed scope.
+ DIScope getContext() const;
StringRef getFilename() const;
StringRef getDirectory() const;
};
diff --git a/lib/IR/DebugInfo.cpp b/lib/IR/DebugInfo.cpp
index 7502316..369895c 100644
--- a/lib/IR/DebugInfo.cpp
+++ b/lib/IR/DebugInfo.cpp
@@ -692,6 +692,31 @@
return getField(DbgNode, 4);
}
+// If the current node has a parent scope then return that,
+// else return an empty scope.
+DIScope DIScope::getContext() const {
+
+ if (isType())
+ return DIType(DbgNode).getContext();
+
+ if (isSubprogram())
+ return DISubprogram(DbgNode).getContext();
+
+ if (isLexicalBlock())
+ return DILexicalBlock(DbgNode).getContext();
+
+ if (isLexicalBlockFile())
+ return DILexicalBlockFile(DbgNode).getContext();
+
+ if (isNameSpace())
+ return DINameSpace(DbgNode).getContext();
+
+ if (isFile() || isCompileUnit())
+ return DIScope();
+
+ return DIScope();
+}
+
StringRef DIScope::getFilename() const {
if (!DbgNode)
return StringRef();