Add virtual add for Type

src/codegen.cpp

@@ -53,7 +53,7 @@ namespace AST {
             return rhs;
         case BinOp::Add:
             return codegen::StackValue{
-                builder.builder->CreateAdd(lhs.value, rhs.value, "add"),
+                lhs.ty->add(builder, lhs.value, rhs.value),
                 lhs.ty
             };
         default:

src/types.cpp

@@ -10,6 +10,14 @@ namespace types {
         default:
             return "Unknown";
         }
+    }
 
+    llvm::Value* FundamentalType::add(codegen::Builder& builder, llvm::Value* lhs, llvm::Value* rhs) {
+        switch (this->m_ty) {
+        case FundamentalTypeKind::Int:
+            return builder.builder->CreateAdd(lhs, rhs);
+        default:
+            throw std::runtime_error("Invalid type for add");
+        }
     }
 }

src/types.h

@@ -16,6 +16,7 @@ namespace types {
         virtual ~Type() = default;
         virtual std::string formatted() = 0;
         virtual llvm::Type* codegen(codegen::Builder& builder) = 0;
+        virtual llvm::Value* add(codegen::Builder& builder, llvm::Value* lhs, llvm::Value* rhs) = 0;
     };
 
     class FundamentalType : public Type {
@@ -26,6 +27,7 @@ namespace types {
         virtual ~FundamentalType() override = default;
         virtual std::string formatted() override;
         virtual llvm::Type* codegen(codegen::Builder& builder) override;
+        virtual llvm::Value* add(codegen::Builder& builder, llvm::Value* lhs, llvm::Value* rhs) override;
     };
 }