patterns: Provide Node constructor, simplify error throwing

By having a node constructor, we can construct a node inline
for error reporting needs, simplifying the code a bit.

1 files changed, 2 insertions, 0 deletions

diff --git a/apt-pkg/cachefilter-patterns.h b/apt-pkg/cachefilter-patterns.h
index 33595dde2..8317665bc 100644
--- a/apt-pkg/cachefilter-patterns.h
+++ b/apt-pkg/cachefilter-patterns.h
@@ -39,6 +39,8 @@ struct PatternTreeParser
       size_t start = 0;
       size_t end = 0;
 
+      explicit Node(size_t start = 0, size_t end = 0) : start(start), end(end) {}
+
       virtual std::ostream &render(std::ostream &os) { return os; };
       std::nullptr_t error(std::string message);
    };