Better toString

src/qir/ast/operator/QIRFilter.java

@@ -16,8 +16,8 @@ import qir.util.QIRException;
  */
 public final class QIRFilter extends QIROperator {
     /**
-     * The filter function that takes a tuple and returns a value (typically a boolean) that describes
-     * whether or not the tuple should be kept in the result set.
+     * The filter function that takes a tuple and returns a value (typically a boolean) that
+     * describes whether or not the tuple should be kept in the result set.
      */
     private final QIRNode filter;
     /**
@@ -41,7 +41,7 @@ public final class QIRFilter extends QIROperator {
 
     @Override
     public final String toString() {
-        return "Filter(" + filter + ", " + child + ")";
+        return "Filter(" + filter + ",\n  " + child + ")";
     }
 
     @Override

src/qir/ast/operator/QIRJoin.java

@@ -57,7 +57,7 @@ public final class QIRJoin extends QIROperator {
 
     @Override
     public final String toString() {
-        return "Join(" + filter + ", " + left + ", " + right + ")";
+        return "Join(" + filter + ",\n  " + left + ",\n  " + right + ")";
     }
 
     @Override

src/qir/ast/operator/QIRProject.java

@@ -41,7 +41,7 @@ public final class QIRProject extends QIROperator {
 
     @Override
     public final String toString() {
-        return "Project(" + formatter + ", " + child + ")";
+        return "Project(" + formatter + ",\n  " + child + ")";
     }
 
     @Override