Changeset 14410 for branches/HeuristicLab.ExpressionGenerator/HeuristicLab.ExpressionGenerator/3.4/Expression.cs

Timestamp:

11/24/16 16:38:20 (7 years ago)

Author:

bburlacu

Message:

#2704: Added the possibility to sample possible arguments without repetition when instantiating expression templates.

File:

• branches/HeuristicLab.ExpressionGenerator/HeuristicLab.ExpressionGenerator/3.4/Expression.cs (modified) (2 diffs)

branches/HeuristicLab.ExpressionGenerator/HeuristicLab.ExpressionGenerator/3.4/Expression.cs

@@ -89 +89 @@
         case ExpressionType.Function:
           sb.Append(string.Format("{0} (", Label));
-          if (arguments != null) {
+          if (Arguments.Any()) {
             for (int i = 0; i < arguments.Count - 1; ++i)
               sb.Append(string.Format("{0}, ", arguments[i]));
@@ -97 +97 @@
       }
 
+      return sb.ToString();
+    }
+
+    public string PrintDot() {
+      var stack = new Stack<Expression>();
+      stack.Push(this);
+
+      var sb = new StringBuilder();
+      sb.AppendLine("digraph g {");
+
+      while (stack.Count > 0) {
+        var top = stack.Pop();
+
+        if (!top.Arguments.Any())
+          continue;
+
+        foreach (var arg in top.Arguments) {
+          var from = top.Arguments.Any() ? top.Label : top.ToString();
+          var to = arg.Arguments.Any() ? arg.Label : arg.ToString();
+          sb.AppendLine(string.Format("\"{0}\" -> \"{1}\";", from, to));
+          stack.Push(arg);
+        }
+      }
+
+      sb.AppendLine("}");
       return sb.ToString();
     }