Add method to ignore invisible AST nodes
Reviewers: aaron.ballman
Subscribers: mgorny, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D70613
diff --git a/clang/lib/AST/Expr.cpp b/clang/lib/AST/Expr.cpp
index c4c8fcf..5c9ceac 100644
--- a/clang/lib/AST/Expr.cpp
+++ b/clang/lib/AST/Expr.cpp
@@ -3020,6 +3020,34 @@
});
}
+Expr *Expr::IgnoreUnlessSpelledInSource() {
+ Expr *E = this;
+
+ Expr *LastE = nullptr;
+ while (E != LastE) {
+ LastE = E;
+ E = E->IgnoreImplicit();
+
+ auto SR = E->getSourceRange();
+
+ if (auto *C = dyn_cast<CXXConstructExpr>(E)) {
+ if (C->getNumArgs() == 1) {
+ Expr *A = C->getArg(0);
+ if (A->getSourceRange() == SR || !isa<CXXTemporaryObjectExpr>(C))
+ E = A;
+ }
+ }
+
+ if (auto *C = dyn_cast<CXXMemberCallExpr>(E)) {
+ Expr *ExprNode = C->getImplicitObjectArgument()->IgnoreParenImpCasts();
+ if (ExprNode->getSourceRange() == SR)
+ E = ExprNode;
+ }
+ }
+
+ return E;
+}
+
bool Expr::isDefaultArgument() const {
const Expr *E = this;
if (const MaterializeTemporaryExpr *M = dyn_cast<MaterializeTemporaryExpr>(E))