4 files changed, 30 insertions, 1 deletions
diff --git a/lib/puppet/parser/ast/astarray.rb b/lib/puppet/parser/ast/astarray.rb
index 9b59d196a..dfd2bcd09 100644
--- a/lib/puppet/parser/ast/astarray.rb
+++ b/lib/puppet/parser/ast/astarray.rb
@@ -47,6 +47,10 @@ class Puppet::Parser::AST
 
             return self
         end
+
+        def to_s
+            "[" + @children.collect { |c| c.to_s }.join(', ') + "]"
+        end
     end
 
     # A simple container class, containing the parameters for an object.
diff --git a/lib/puppet/parser/ast/function.rb b/lib/puppet/parser/ast/function.rb
index 2f768ebdb..4c3a5dc05 100644
--- a/lib/puppet/parser/ast/function.rb
+++ b/lib/puppet/parser/ast/function.rb
@@ -51,5 +51,10 @@ class Puppet::Parser::AST
              @fname = Puppet::Parser::Functions.function(@name)
             # Lastly, check the parity
         end
+
+        def to_s
+            args = arguments.is_a?(ASTArray) ? arguments.to_s.gsub(/\[(.*)\]/,'\1') : arguments
+            "#{name}(#{args})"
+        end
     end
 end
diff --git a/lib/puppet/parser/ast/leaf.rb b/lib/puppet/parser/ast/leaf.rb
index dba9812a7..d08938011 100644
--- a/lib/puppet/parser/ast/leaf.rb
+++ b/lib/puppet/parser/ast/leaf.rb
@@ -11,7 +11,7 @@ class Puppet::Parser::AST
         end
 
         def to_s
-            return @value
+            return @value.to_s unless @value.nil?
         end
     end
 
@@ -29,6 +29,10 @@ class Puppet::Parser::AST
             end
             @value
         end
+
+        def to_s
+            @value ? "true" : "false"
+        end
     end
 
     # The base string class.
@@ -38,6 +42,10 @@ class Puppet::Parser::AST
         def evaluate(scope)
             return scope.strinterp(@value, file, line)
         end
+
+        def to_s
+            "\"#{@value}\""
+        end
     end
 
     # An uninterpreted string.
@@ -45,6 +53,10 @@ class Puppet::Parser::AST
         def evaluate(scope)
             return @value
         end
+
+        def to_s
+            "\"#{@value}\""
+        end
     end
 
     # The 'default' option on case statements and selectors.
diff --git a/lib/puppet/parser/ast/resource_reference.rb b/lib/puppet/parser/ast/resource_reference.rb
index 6189ab8de..117bc88af 100644
--- a/lib/puppet/parser/ast/resource_reference.rb
+++ b/lib/puppet/parser/ast/resource_reference.rb
@@ -64,5 +64,13 @@ class Puppet::Parser::AST
             end
             return objtype
         end
+
+        def to_s
+            if title.is_a?(ASTArray)
+                "#{type.to_s.capitalize}#{title}"
+            else
+                "#{type.to_s.capitalize}[#{title}]"
+            end
+        end
     end
 end