2 files changed, 7 insertions, 11 deletions
diff --git a/chapter06/src/main/java/com/seaofnodes/simple/Parser.java b/chapter06/src/main/java/com/seaofnodes/simple/Parser.java
index 81cb9e57..dec0fa57 100644
--- a/chapter06/src/main/java/com/seaofnodes/simple/Parser.java
+++ b/chapter06/src/main/java/com/seaofnodes/simple/Parser.java
@@ -13,7 +13,6 @@ import java.util.*;
  * This is a simple recursive descent parser. All lexical analysis is done here as well.
  */
 public class Parser {
-
   
     /**
      * A Global Static, unique to each compilation.  This is a public, so we
@@ -88,14 +87,14 @@ public class Parser {
 
     public StopNode parse() { return parse(false); }
     public StopNode parse(boolean show) {
-	    _xScopes.push(_scope);
+        _xScopes.push(_scope);
         // Enter a new scope for the initial control and arguments
         _scope.push();
         _scope.define(ScopeNode.CTRL, new ProjNode(START, 0, ScopeNode.CTRL).peephole());
         _scope.define(ScopeNode.ARG0, new ProjNode(START, 1, ScopeNode.ARG0).peephole());
         parseBlock();
         _scope.pop();
-		_xScopes.pop();
+        _xScopes.pop();
         if (!_lexer.isEOF()) throw error("Syntax error, unexpected " + _lexer.getAnyNextToken());
         STOP.peephole();
         if( show ) showGraph();
@@ -269,10 +268,10 @@ public class Parser {
         var lhs = parseAddition();
         if (match("==")) return new BoolNode.EQ(lhs, parseComparison()).peephole();
         if (match("!=")) return new NotNode(new BoolNode.EQ(lhs, parseComparison()).peephole()).peephole();
-        if (match("<" )) return new BoolNode.LT(lhs, parseComparison()).peephole();
         if (match("<=")) return new BoolNode.LE(lhs, parseComparison()).peephole();
-        if (match(">" )) return new BoolNode.LT(parseComparison(), lhs).peephole();
+        if (match("<" )) return new BoolNode.LT(lhs, parseComparison()).peephole();
         if (match(">=")) return new BoolNode.LE(parseComparison(), lhs).peephole();
+        if (match(">" )) return new BoolNode.LT(parseComparison(), lhs).peephole();
         return lhs;
     }
 
diff --git a/chapter06/src/main/java/com/seaofnodes/simple/node/Node.java b/chapter06/src/main/java/com/seaofnodes/simple/node/Node.java
index f5e58284..4fbcf940 100644
--- a/chapter06/src/main/java/com/seaofnodes/simple/node/Node.java
+++ b/chapter06/src/main/java/com/seaofnodes/simple/node/Node.java
@@ -91,10 +91,7 @@ public abstract class Node {
     // line (because this is what a debugger typically displays by default) and
     // has to be robust with broken graph/nodes.
     @Override
-    public final String toString() {
-        // TODO: This needs a lot of work
-        return print();
-    }
+    public final String toString() {  return print(); }
 
     // This is a *deep* print.  This version will fail on cycles, which we will
     // correct later when we can parse programs with loops.  We print with a
@@ -199,11 +196,11 @@ public abstract class Node {
     // Error is 'use' does not exist; ok for 'use' to be null.
     protected boolean delUse( Node use ) {
         Utils.del(_outputs, Utils.find(_outputs, use));
-        return _outputs.size() == 0;
+        return _outputs.isEmpty();
     }
 
     // Shortcut for "popping" n nodes.  A "pop" is basically a
-    // set_def(last,null) followed by lowering the nIns() count.
+    // setDef(last,null) followed by lowering the nIns() count.
     void popN(int n) {
         for( int i=0; i<n; i++ ) {
             Node old_def = _inputs.removeLast();