Introduce ASTLocation::getReferencedDecl(), for getting the declaration that the ASTLocation references.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76336 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Index/ASTLocation.cpp b/lib/Index/ASTLocation.cpp
index d83e0e3..84d7936 100644
--- a/lib/Index/ASTLocation.cpp
+++ b/lib/Index/ASTLocation.cpp
@@ -19,6 +19,30 @@
using namespace clang;
using namespace idx;
+static Decl *getDeclFromExpr(Stmt *E) {
+ if (DeclRefExpr *RefExpr = dyn_cast<DeclRefExpr>(E))
+ return RefExpr->getDecl();
+ if (MemberExpr *ME = dyn_cast<MemberExpr>(E))
+ return ME->getMemberDecl();
+ if (CallExpr *CE = dyn_cast<CallExpr>(E))
+ return getDeclFromExpr(CE->getCallee());
+ if (CastExpr *CE = dyn_cast<CastExpr>(E))
+ return getDeclFromExpr(CE->getSubExpr());
+
+ return 0;
+}
+
+Decl *ASTLocation::getReferencedDecl() {
+ if (isInvalid())
+ return 0;
+ if (isDecl())
+ return getDecl();
+
+ assert(getStmt());
+ return getDeclFromExpr(getStmt());
+}
+
+
static bool isContainedInStatement(Stmt *Node, Stmt *Parent) {
assert(Node && Parent && "Passed null Node or Parent");