1 files changed, 47 insertions, 30 deletions

diff --git a/Source/JavaScriptCore/yarr/YarrPattern.h b/Source/JavaScriptCore/yarr/YarrPattern.h
index e7d187c2b..5482de5af 100644
--- a/Source/JavaScriptCore/yarr/YarrPattern.h
+++ b/Source/JavaScriptCore/yarr/YarrPattern.h
@@ -28,12 +28,9 @@
 #define YarrPattern_h
 
 #include <wtf/CheckedArithmetic.h>
-#include <wtf/OwnPtr.h>
-#include <wtf/PassOwnPtr.h>
 #include <wtf/RefCounted.h>
 #include <wtf/Vector.h>
 #include <wtf/text/WTFString.h>
-#include <wtf/unicode/Unicode.h>
 
 namespace JSC { namespace Yarr {
 
@@ -270,12 +267,11 @@ public:
     
     PatternAlternative* addNewAlternative()
     {
-        PatternAlternative* alternative = new PatternAlternative(this);
-        m_alternatives.append(adoptPtr(alternative));
-        return alternative;
+        m_alternatives.append(std::make_unique<PatternAlternative>(this));
+        return static_cast<PatternAlternative*>(m_alternatives.last().get());
     }
 
-    Vector<OwnPtr<PatternAlternative> > m_alternatives;
+    Vector<std::unique_ptr<PatternAlternative>> m_alternatives;
     PatternAlternative* m_parent;
     unsigned m_minimumSize;
     unsigned m_callFrameSize;
@@ -286,13 +282,13 @@ public:
 // (please to be calling newlineCharacterClass() et al on your
 // friendly neighborhood YarrPattern instance to get nicely
 // cached copies).
-CharacterClass* newlineCreate();
-CharacterClass* digitsCreate();
-CharacterClass* spacesCreate();
-CharacterClass* wordcharCreate();
-CharacterClass* nondigitsCreate();
-CharacterClass* nonspacesCreate();
-CharacterClass* nonwordcharCreate();
+std::unique_ptr<CharacterClass> newlineCreate();
+std::unique_ptr<CharacterClass> digitsCreate();
+std::unique_ptr<CharacterClass> spacesCreate();
+std::unique_ptr<CharacterClass> wordcharCreate();
+std::unique_ptr<CharacterClass> nondigitsCreate();
+std::unique_ptr<CharacterClass> nonspacesCreate();
+std::unique_ptr<CharacterClass> nonwordcharCreate();
 
 struct TermChain {
     TermChain(PatternTerm term)
@@ -313,6 +309,7 @@ struct YarrPattern {
 
         m_containsBackreferences = false;
         m_containsBOL = false;
+        m_containsUnsignedLengthPattern = false;
 
         newlineCached = 0;
         digitsCached = 0;
@@ -331,46 +328,65 @@ struct YarrPattern {
         return m_maxBackReference > m_numSubpatterns;
     }
 
+    bool containsUnsignedLengthPattern()
+    {
+        return m_containsUnsignedLengthPattern;
+    }
+
     CharacterClass* newlineCharacterClass()
     {
-        if (!newlineCached)
-            m_userCharacterClasses.append(adoptPtr(newlineCached = newlineCreate()));
+        if (!newlineCached) {
+            m_userCharacterClasses.append(newlineCreate());
+            newlineCached = m_userCharacterClasses.last().get();
+        }
         return newlineCached;
     }
     CharacterClass* digitsCharacterClass()
     {
-        if (!digitsCached)
-            m_userCharacterClasses.append(adoptPtr(digitsCached = digitsCreate()));
+        if (!digitsCached) {
+            m_userCharacterClasses.append(digitsCreate());
+            digitsCached = m_userCharacterClasses.last().get();
+        }
         return digitsCached;
     }
     CharacterClass* spacesCharacterClass()
     {
-        if (!spacesCached)
-            m_userCharacterClasses.append(adoptPtr(spacesCached = spacesCreate()));
+        if (!spacesCached) {
+            m_userCharacterClasses.append(spacesCreate());
+            spacesCached = m_userCharacterClasses.last().get();
+        }
         return spacesCached;
     }
     CharacterClass* wordcharCharacterClass()
     {
-        if (!wordcharCached)
-            m_userCharacterClasses.append(adoptPtr(wordcharCached = wordcharCreate()));
+        if (!wordcharCached) {
+            m_userCharacterClasses.append(wordcharCreate());
+            wordcharCached = m_userCharacterClasses.last().get();
+        }
         return wordcharCached;
     }
     CharacterClass* nondigitsCharacterClass()
     {
-        if (!nondigitsCached)
-            m_userCharacterClasses.append(adoptPtr(nondigitsCached = nondigitsCreate()));
+        if (!nondigitsCached) {
+            m_userCharacterClasses.append(nondigitsCreate());
+            nondigitsCached = m_userCharacterClasses.last().get();
+        }
         return nondigitsCached;
     }
     CharacterClass* nonspacesCharacterClass()
     {
-        if (!nonspacesCached)
-            m_userCharacterClasses.append(adoptPtr(nonspacesCached = nonspacesCreate()));
+        if (!nonspacesCached) {
+            m_userCharacterClasses.append(nonspacesCreate());
+            nonspacesCached = m_userCharacterClasses.last().get();
+        }
         return nonspacesCached;
     }
     CharacterClass* nonwordcharCharacterClass()
     {
-        if (!nonwordcharCached)
-            m_userCharacterClasses.append(adoptPtr(nonwordcharCached = nonwordcharCreate()));
+        if (!nonwordcharCached) {
+            m_userCharacterClasses.append(nonwordcharCreate());
+            nonwordcharCached = m_userCharacterClasses.last().get();
+        }
         return nonwordcharCached;
     }
 
@@ -378,11 +394,12 @@ struct YarrPattern {
     bool m_multiline : 1;
     bool m_containsBackreferences : 1;
     bool m_containsBOL : 1;
+    bool m_containsUnsignedLengthPattern : 1; 
     unsigned m_numSubpatterns;
     unsigned m_maxBackReference;
     PatternDisjunction* m_body;
-    Vector<OwnPtr<PatternDisjunction>, 4> m_disjunctions;
-    Vector<OwnPtr<CharacterClass> > m_userCharacterClasses;
+    Vector<std::unique_ptr<PatternDisjunction>, 4> m_disjunctions;
+    Vector<std::unique_ptr<CharacterClass>> m_userCharacterClasses;
 
 private:
     const char* compile(const String& patternString);