Implements support for functions with the same name, but different parameters

src/Diagnostics/DiagnosticCode.hpp

@@ -17,8 +17,6 @@ namespace Porygon::Diagnostics {
         CantAssignVariable,
         VariableNotFound,
         ExpressionIsNotAFunction,
-        ParameterCountMismatch,
-        ParameterTypeMismatch,
         CantIndex,
         InvalidReturnType,
         ConditionNotABool,
@@ -27,7 +25,8 @@ namespace Porygon::Diagnostics {
         UserDataFieldNoGetter,
         UserDataFieldNoSetter,
         NumericalForArgumentNotANumber,
-        CantIterateExpression
+        CantIterateExpression,
+        InvalidFunctionParameters
     };
 }
 #endif //PORYGONLANG_DIAGNOSTICCODE_HPP

src/Diagnostics/DiagnosticsHolder.cpp

@@ -48,16 +48,16 @@ size_t DiagnosticsHolder::GetLineFromPosition(size_t i) {
         if (bottomLimit == topLimit){
             return bottomLimit;
         }
-        size_t half = (topLimit - bottomLimit) / 2;
+        size_t half = bottomLimit + ((topLimit - bottomLimit) / 2);
         size_t pos = _lineStarts[half];
         size_t length = _lineLength[half];
         if (pos < i && pos + length > i){
             return half;
         }
         if (pos > i){
-            bottomLimit = half;
-        } else if (pos < i){
             topLimit = half;
+        } else if (pos < i){
+            bottomLimit = half;
         } else{
             return half;
         }