lib/regextest/back/result.rb in regextest-0.1.6 vs lib/regextest/back/result.rb in regextest-0.1.8

@@ -380,22 +380,30 @@
           elsif @results.size == 0
             @results.push (Regextest::Back::Element.any_char)
             @results.push (Regextest::Back::Element.any_char)
             bound_process(@results[0], @results[1])
           elsif offset == @results.size
-            @results.push (Regextest::Back::Element.any_char)
-            if !bound_process(@results[-2], @results[-1])
+            if !is_end_anchor?
+              @results.push (Regextest::Back::Element.any_char)
+              if !bound_process(@results[-2], @results[-1])
+                return false
+              end
+            elsif !@results[-1].word_elements?
               return false
             end
           elsif offset == 0
-            if !unshift_params(1)
+            if !is_begin_anchor?
+              if !unshift_params(1)
+                return false
+              end
+              @results.unshift (Regextest::Back::Element.any_char)
+              if !bound_process(@results[0], @results[1])
+                return false
+              end
+            elsif !@results[0].word_elements?
               return false
             end
-            @results.unshift (Regextest::Back::Element.any_char)
-            if !bound_process(@results[0], @results[1])
-              return false
-            end
           end
         end
       when :CMD_ANC_WORD_UNBOUND
         offsets.uniq.size.times do | i |
           offset = offsets[i]
@@ -407,22 +415,30 @@
           elsif @results.size == 0
             @results.push (Regextest::Back::Element.any_char)
             @results.push (Regextest::Back::Element.any_char)
             unbound_process(@results[0], @results[1])
           elsif offset == @results.size
-            @results.push (Regextest::Back::Element.any_char)
-            if !unbound_process(@results[-2], @results[-1])
+            if !is_end_anchor?
+              @results.push (Regextest::Back::Element.any_char)
+              if !unbound_process(@results[-2], @results[-1])
+                return false
+              end
+            elsif @results[-1].word_elements?
               return false
             end
           elsif offset == 0
-            if !unshift_params(1)
+            if !is_begin_anchor?
+              if !unshift_params(1)
+                return false
+              end
+              @results.unshift (Regextest::Back::Element.any_char)
+              if !unbound_process(@results[0], @results[1])
+                return false
+              end
+            elsif @results[0].word_elements?
               return false
             end
-            @results.unshift (Regextest::Back::Element.any_char)
-            if !unbound_process(@results[0], @results[1])
-              return false
-            end
           end
         end
       when :CMD_ANC_LOOK_BEHIND2
         @start_offset = offsets.max
       else
@@ -478,9 +494,27 @@
     end
     if elem1.empty? || elem2.empty?
       return false
     end
     true
+  end
+  
+  # return true if begin anchor exists
+  def is_begin_anchor?
+    (@positional_anchors[:CMD_ANC_STRING_BEGIN] &&
+     @positional_anchors[:CMD_ANC_STRING_BEGIN][0] == 0) ||
+    (@positional_anchors[:CMD_ANC_LINE_BEGIN] &&
+     @positional_anchors[:CMD_ANC_LINE_BEGIN][0] == 0)
+  end
+
+  # return true if end anchor exists
+  def is_end_anchor?
+    (@positional_anchors[:CMD_ANC_STRING_END] &&
+     @positional_anchors[:CMD_ANC_STRING_END][-1] == @results.size) ||
+    (@positional_anchors[:CMD_ANC_STRING_END2] &&
+     @positional_anchors[:CMD_ANC_STRING_END2][-1] == @results.size) ||
+    (@positional_anchors[:CMD_ANC_LINE_END] &&
+     @positional_anchors[:CMD_ANC_LINE_END][-1] == @results.size)
   end
 
   # Fixes results
   def fix
     @pre_match  = fix_part(0, @start_offset-1)