Refactor: Avoid `if` → `else if` → … for compare operators

When trying to match one of compare operator key inside `if()` condition,
remember the index of matched operator. Later this index used to
select the operation to perform instead of strings compare again.

1 files changed, 9 insertions, 0 deletions

diff --git a/Source/cmConditionEvaluator.h b/Source/cmConditionEvaluator.h
index d74e28b..8367007 100644
--- a/Source/cmConditionEvaluator.h
+++ b/Source/cmConditionEvaluator.h
@@ -65,6 +65,15 @@ private:
   bool HandleLevel4(cmArgumentList& newArgs, std::string& errorString,
                     MessageType& status);
 
+  template <int N>
+  int matchKeysImpl(const cmExpandedCommandArgument&);
+
+  template <int N, typename T, typename... Keys>
+  int matchKeysImpl(const cmExpandedCommandArgument&, T, Keys...);
+
+  template <typename... Keys>
+  int matchKeys(const cmExpandedCommandArgument&, Keys...);
+
   cmMakefile& Makefile;
   cmListFileBacktrace Backtrace;
   cmPolicies::PolicyStatus Policy12Status;