Add dump() to SkClipStack to help with debugging.

src/core/SkClipStack.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkCanvas.h"
 #include "SkClipStack.h"
 #include "SkPath.h"
@@ skipping 827 matching lines @@
         return kWideOpenGenID;
     }
 
     const Element* back = static_cast<const Element*>(fDeque.back());
     if (kInsideOut_BoundsType == back->fFiniteBoundType && back->fFiniteBound.isEmpty()) {
         return kWideOpenGenID;
     }
 
     return back->getGenID();
 }
+
+#ifdef SK_DEVELOPER
+void SkClipStack::Element::dump() const {
+    static const char* kTypeStrings[] = {
+        "empty",
+        "rect",
+        "rrect",
+        "path"
+    };
+    SK_COMPILE_ASSERT(0 == kEmpty_Type, type_str);
+    SK_COMPILE_ASSERT(1 == kRect_Type, type_str);
+    SK_COMPILE_ASSERT(2 == kRRect_Type, type_str);
+    SK_COMPILE_ASSERT(3 == kPath_Type, type_str);
+    SK_COMPILE_ASSERT(SK_ARRAY_COUNT(kTypeStrings) == kTypeCnt, type_str);
+
+    static const char* kOpStrings[] = {
+        "difference",
+        "intersect",
+        "union",
+        "xor",
+        "reverse-difference",
+        "replace",
+    };
+    SK_COMPILE_ASSERT(0 == SkRegion::kDifference_Op, op_str);
+    SK_COMPILE_ASSERT(1 == SkRegion::kIntersect_Op, op_str);
+    SK_COMPILE_ASSERT(2 == SkRegion::kUnion_Op, op_str);
+    SK_COMPILE_ASSERT(3 == SkRegion::kXOR_Op, op_str);
+    SK_COMPILE_ASSERT(4 == SkRegion::kReverseDifference_Op, op_str);
+    SK_COMPILE_ASSERT(5 == SkRegion::kReplace_Op, op_str);
+    SK_COMPILE_ASSERT(SK_ARRAY_COUNT(kOpStrings) == SkRegion::kOpCnt, op_str);
+
+    SkDebugf("Type: %s, Op: %s, AA: %s, Save Count: %d\n", kTypeStrings[fType],
+             kOpStrings[fOp], (fDoAA ? "yes" : "no"), fSaveCount);
+    switch (fType) {
+        case kEmpty_Type:
+            SkDebugf("\n");
+            break;
+        case kRect_Type:
+            this->getRect().dump();
+            SkDebugf("\n");
+            break;
+        case kRRect_Type:
+            this->getRRect().dump();
+            SkDebugf("\n");
+            break;
+        case kPath_Type:
+            this->getPath().dump(true);
+            break;
+    }
+}
+
+void SkClipStack::dump() const {
+    B2TIter iter(*this);
+    const Element* e;
+    while ((e = iter.next())) {
+        e->dump();
+        SkDebugf("\n");
+    }
+}
+#endif