From 108a56e3a6e58c7824a7053a33878a3d847d7157 Mon Sep 17 00:00:00 2001
From: Klaus Aehlig <klaus.aehlig@huawei.com>
Date: Thu, 1 Aug 2024 17:45:06 +0200
Subject: expression: add kEmptyString

---
 src/buildtool/build_engine/expression/expression.hpp | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src/buildtool/build_engine/expression/expression.hpp')

diff --git a/src/buildtool/build_engine/expression/expression.hpp b/src/buildtool/build_engine/expression/expression.hpp
index ac72ee74..219a5927 100644
--- a/src/buildtool/build_engine/expression/expression.hpp
+++ b/src/buildtool/build_engine/expression/expression.hpp
@@ -244,6 +244,8 @@ class Expression {
         Expression::FromJson("[]"_json);
     inline static ExpressionPtr const kEmptyMapExpr =
         Expression::FromJson(R"({"type": "empty_map"})"_json);
+    inline static ExpressionPtr const kEmptyString =
+        Expression::FromJson(R"("")"_json);
     inline static ExpressionPtr const kOne = Expression::FromJson("1.0"_json);
     inline static ExpressionPtr const kTrue = Expression::FromJson("true"_json);
     inline static ExpressionPtr const kFalse =
-- 
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