Fix bug causing incorrect parsing of inputs with negative signs.

Make sure the set and define operators have the lowest precedence.

core/src/main/kotlin/org/nwapw/abacus/plugin/standard/operator/OperatorAdd.kt

@@ -11,7 +11,7 @@ import org.nwapw.abacus.number.NumberInterface
  *
  * This is a standard operator that simply performs addition.
  */
-class OperatorAdd: NumberOperator(OperatorAssociativity.LEFT, OperatorType.BINARY_INFIX, 0) {
+class OperatorAdd: NumberOperator(OperatorAssociativity.LEFT, OperatorType.BINARY_INFIX, 1) {
 
     override fun matchesParams(context: PluginEvaluationContext, params: Array<out NumberInterface>) =
             params.size == 2

core/src/main/kotlin/org/nwapw/abacus/plugin/standard/operator/OperatorCaret.kt

@@ -12,7 +12,7 @@ import org.nwapw.abacus.plugin.standard.StandardPlugin.*
  *
  * This is a standard operator that brings one number to the power of the other.
  */
-class OperatorCaret: NumberOperator(OperatorAssociativity.RIGHT, OperatorType.BINARY_INFIX, 2) {
+class OperatorCaret: NumberOperator(OperatorAssociativity.RIGHT, OperatorType.BINARY_INFIX, 3) {
 
     override fun matchesParams(context: PluginEvaluationContext, params: Array<out NumberInterface>) =
             params.size == 2

core/src/main/kotlin/org/nwapw/abacus/plugin/standard/operator/OperatorDivide.kt

@@ -11,7 +11,7 @@ import org.nwapw.abacus.number.NumberInterface
  *
  * This is a standard operator that simply performs division.
  */
-class OperatorDivide: NumberOperator(OperatorAssociativity.LEFT, OperatorType.BINARY_INFIX, 1) {
+class OperatorDivide: NumberOperator(OperatorAssociativity.LEFT, OperatorType.BINARY_INFIX, 2) {
 
     override fun matchesParams(context: PluginEvaluationContext, params: Array<out NumberInterface>) =
             params.size == 2

core/src/main/kotlin/org/nwapw/abacus/plugin/standard/operator/OperatorMultiply.kt

@@ -11,7 +11,7 @@ import org.nwapw.abacus.number.NumberInterface
  *
  * This is a standard operator that simply performs multiplication.
  */
-class OperatorMultiply: NumberOperator(OperatorAssociativity.LEFT, OperatorType.BINARY_INFIX, 1) {
+class OperatorMultiply: NumberOperator(OperatorAssociativity.LEFT, OperatorType.BINARY_INFIX, 2) {
 
     override fun matchesParams(context: PluginEvaluationContext, params: Array<out NumberInterface>) =
             params.size == 2

core/src/main/kotlin/org/nwapw/abacus/plugin/standard/operator/OperatorNcr.kt

@@ -14,7 +14,7 @@ import org.nwapw.abacus.plugin.standard.StandardPlugin.OP_NPR
  * This is a standard operator that returns the number of possible combinations, regardless of order,
  * of a certain size can be taken out of a pool of a bigger size.
  */
-class OperatorNcr: NumberOperator(OperatorAssociativity.RIGHT, OperatorType.BINARY_INFIX, 0) {
+class OperatorNcr: NumberOperator(OperatorAssociativity.RIGHT, OperatorType.BINARY_INFIX, 1) {
 
     override fun matchesParams(context: PluginEvaluationContext, params: Array<out NumberInterface>) =
             params.size == 2 && params[0].isInteger()

core/src/main/kotlin/org/nwapw/abacus/plugin/standard/operator/OperatorNegate.kt

@@ -11,7 +11,7 @@ import org.nwapw.abacus.number.NumberInterface
  *
  * This is a standard operator that negates a number.
  */
-class OperatorNegate: NumberOperator(OperatorAssociativity.LEFT, OperatorType.UNARY_PREFIX, 0) {
+class OperatorNegate: NumberOperator(OperatorAssociativity.LEFT, OperatorType.UNARY_PREFIX, 1) {
 
     override fun matchesParams(context: PluginEvaluationContext, params: Array<out NumberInterface>) =
             params.size == 1

core/src/main/kotlin/org/nwapw/abacus/plugin/standard/operator/OperatorNpr.kt

@@ -12,7 +12,7 @@ import org.nwapw.abacus.number.NumberInterface
  * his is a standard operator that returns the number of possible combinations
  * of a certain size can be taken out of a pool of a bigger size.
  */
-class OperatorNpr: NumberOperator(OperatorAssociativity.RIGHT, OperatorType.BINARY_INFIX, 0) {
+class OperatorNpr: NumberOperator(OperatorAssociativity.RIGHT, OperatorType.BINARY_INFIX, 1) {
 
     override fun matchesParams(context: PluginEvaluationContext, params: Array<out NumberInterface>) =
             params.size == 2 && params[0].isInteger()

core/src/main/kotlin/org/nwapw/abacus/plugin/standard/operator/OperatorSubtract.kt

@@ -11,7 +11,7 @@ import org.nwapw.abacus.number.NumberInterface
  *
  * This is a standard operator that performs subtraction.
  */
-class OperatorSubtract: NumberOperator(OperatorAssociativity.LEFT, OperatorType.BINARY_INFIX, 0) {
+class OperatorSubtract: NumberOperator(OperatorAssociativity.LEFT, OperatorType.BINARY_INFIX, 1) {
 
     override fun matchesParams(context: PluginEvaluationContext, params: Array<out NumberInterface>) =
             params.size == 2

fx/src/main/java/org/nwapw/abacus/fx/AbacusController.java

@@ -330,8 +330,10 @@ public class AbacusController implements PluginListener {
             }
         } catch (AbacusException abacusError) {
             outputText.setText(ERR_DEFINITION + " (" + abacusError.getMessage() + ")");
+            abacusError.printStackTrace();
         } catch (RuntimeException runtime) {
             outputText.setText(ERR_DEFINITION + " (" + ERR_EXCEPTION + ")");
+            runtime.printStackTrace();
         } catch (FileNotFoundException ignored) {}
     }
 
@@ -345,13 +347,13 @@ public class AbacusController implements PluginListener {
         } catch (IOException | ClassNotFoundException e) {
             e.printStackTrace();
         }
-        abacus.reload();
+        reloadAbacus();
     }
 
     @FXML
     public void performReload() {
         alertIfApplyNeeded(true);
-        abacus.reload();
+        reloadAbacus();
     }
 
     @FXML
@@ -391,6 +393,13 @@ public class AbacusController implements PluginListener {
         changesMade = true;
     }
 
+    private void reloadAbacus(){
+        abacus.reload();
+        for(String file : definitionFiles){
+            loadDefinitionFile(file);
+        }
+    }
+
     @Override
     public void onLoad(PluginManager manager) {
         ExtendedConfiguration configuration = (ExtendedConfiguration) abacus.getConfiguration();
@@ -420,9 +429,6 @@ public class AbacusController implements PluginListener {
         }).collect(Collectors.toCollection(ArrayList::new)));
         functionList.sort(Comparator.comparing(Documentation::getCodeName));
         definitionFiles.addAll(configuration.getDefinitionFiles());
-        for(String file : definitionFiles){
-            loadDefinitionFile(file);
-        }
     }
 
     @Override