start type narrowing for binary exprs

2026-08-02 18:03:31 +10:00
parent cf79fd00b9
commit 9bee018c09
2 changed files with 145 additions and 2 deletions
--- a/src/typechecker/typechecker.hpp
+++ b/src/typechecker/typechecker.hpp
@@ -8,6 +8,13 @@

 namespace Solstice {

+    enum class Narrowing {
+        None,
+        Left,
+        Right,
+        Both
+    };
+
    class TypeChecker {
        std::unordered_map<std::string, PossibleType> variables;
        std::unordered_map<std::string, Type> types;
@@ -37,6 +44,9 @@ namespace Solstice {

        void checkCodeBlockType(Node& node);

+        Narrowing doesNodeChildrenNeedNarrowing(Node& node);
+        void narrowBinaryNode(Node& node, std::unordered_map<TypePair, Type>& overloads);
+
        void checkAddType(Node& node);
        void checkSubtractType(Node& node);
        void checkMultiplyType(Node& node);