mini-refactor "lambda.name or anonymous lambda" logic

Change-Id: I08d39c4ad5b967de526c0d5c5e6299256c7967f3

1 files changed, 25 insertions, 0 deletions

diff --git a/src/libexpr/nixexpr.hh b/src/libexpr/nixexpr.hh
index 64a9ddeec..d18c37dda 100644
--- a/src/libexpr/nixexpr.hh
+++ b/src/libexpr/nixexpr.hh
@@ -297,6 +297,31 @@ struct ExprLambda : Expr
     std::string showNamePos(const EvalState & state) const;
     inline bool hasFormals() const { return formals != nullptr; }
     PosIdx getPos() const override { return pos; }
+
+    /** Returns the name of the lambda,
+     * or "anonymous lambda" if it doesn't have one.
+     */
+    inline std::string getName(SymbolTable const & symbols) const
+    {
+        if (this->name) {
+            return symbols[this->name];
+        }
+
+        return "anonymous lambda";
+    }
+
+    /** Returns the name of the lambda in single quotes,
+     * or "anonymous lambda" if it doesn't have one.
+     */
+    inline std::string getQuotedName(SymbolTable const & symbols) const
+    {
+        if (this->name) {
+            return concatStrings("'", symbols[this->name], "'");
+        }
+
+        return "anonymous lambda";
+    }
+
     COMMON_METHODS
 };