Add Exception Messages

src/main/java/de/maishai/ASTGenerator.java

@@ -81,7 +81,7 @@ public class ASTGenerator {
             type.setObjectType(new Id(ctx.id().getText()));
             return type;
         }
-        throw new RuntimeException();
+        throw new RuntimeException("No type found!");
     }
 
     public static ReturnType getReturnType(DecafParser.ReturntypeContext ctx) {
@@ -99,6 +99,6 @@ public class ASTGenerator {
             type.setObjectType(new Id(ctx.type().id().getText()));
             return type;
         }
-        throw new RuntimeException();
+        throw new RuntimeException("No return type found!");
     }
 }

src/main/java/de/maishai/ExpressionGenerator.java

@@ -26,7 +26,7 @@ public class ExpressionGenerator extends DecafBaseVisitor<Expression> {
         if (ctx.unaryOp().SUB() != null) {
             return new Unary(UnaryOperator.SUB, expr);
         }
-        throw new RuntimeException();
+        throw new RuntimeException("No unary operator found.");
     }
 
     @Override
@@ -59,7 +59,7 @@ public class ExpressionGenerator extends DecafBaseVisitor<Expression> {
             return new BoolLiteral(Boolean.valueOf(ctx.BOOLEANLITERAL().getText()));
         if (ctx.CHARLITERAL() != null)
             return new CharLiteral(ctx.CHARLITERAL().getText().charAt(0));
-        throw new RuntimeException();
+        throw new RuntimeException("No literal found!");
     }
 
     public static Binary generateBinary(DecafParser.BinaryOperationContext ctx) {
@@ -81,7 +81,7 @@ public class ExpressionGenerator extends DecafBaseVisitor<Expression> {
         if (ctx.NE() != null) return Operator.NE;
         if (ctx.AND() != null) return Operator.AND;
         if (ctx.OR() != null) return Operator.OR;
-        throw new RuntimeException();
+        throw new RuntimeException("No operator found!");
     }
 
     @Override

src/main/java/de/maishai/StatementGenerator.java

@@ -110,6 +110,6 @@ public class StatementGenerator extends DecafBaseVisitor<Statement> {
             return new Binary(id, Operator.SUB, expression);
         if (ctx.MUL_ASSIGN() != null)
             return new Binary(id, Operator.MUL, expression);
-        throw new RuntimeException();
+        throw new RuntimeException("No assign sign found!");
     }
 }