1 files changed, 126 insertions, 0 deletions
diff --git a/Source/WebCore/contentextensions/NFA.cpp b/Source/WebCore/contentextensions/NFA.cpp
new file mode 100644
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+++ b/Source/WebCore/contentextensions/NFA.cpp
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+/*
+ * Copyright (C) 2014, 2015 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "NFA.h"
+
+#if ENABLE(CONTENT_EXTENSIONS)
+
+#include <wtf/ASCIICType.h>
+#include <wtf/DataLog.h>
+
+namespace WebCore {
+
+namespace ContentExtensions {
+
+#if CONTENT_EXTENSIONS_STATE_MACHINE_DEBUGGING
+void NFA::debugPrintDot() const
+{
+    dataLogF("digraph NFA_Transitions {\n");
+    dataLogF("    rankdir=LR;\n");
+    dataLogF("    node [shape=circle];\n");
+    dataLogF("    {\n");
+
+    for (unsigned i = 0; i < nodes.size(); ++i) {
+        dataLogF("         %d [label=<Node %d", i, i);
+
+        const auto& node = nodes[i];
+
+        if (node.actionStart != node.actionEnd) {
+            dataLogF("<BR/>(Final: ");
+            bool isFirst = true;
+            for (unsigned actionIndex = node.actionStart; actionIndex < node.actionEnd; ++actionIndex) {
+                if (!isFirst)
+                    dataLogF(", ");
+                dataLogF("%llu", actions[actionIndex]);
+                isFirst = false;
+            }
+            dataLogF(")");
+        }
+        dataLogF(">]");
+
+        if (node.actionStart != node.actionEnd)
+            dataLogF(" [shape=doublecircle]");
+        dataLogF(";\n");
+    }
+    dataLogF("    }\n");
+
+    dataLogF("    {\n");
+    for (unsigned i = 0; i < nodes.size(); ++i) {
+        const auto& node = nodes[i];
+
+        HashMap<uint32_t, Vector<uint32_t>, DefaultHash<unsigned>::Hash, WTF::UnsignedWithZeroKeyHashTraits<unsigned>> transitionsPerTarget;
+
+        for (uint32_t transitionIndex = node.rangesStart; transitionIndex < node.rangesEnd; ++transitionIndex) {
+            const ImmutableCharRange& range = transitions[transitionIndex];
+            for (uint32_t targetIndex = range.targetStart; targetIndex < range.targetEnd; ++targetIndex) {
+                uint32_t target = targets[targetIndex];
+                auto addResult = transitionsPerTarget.add(target, Vector<uint32_t>());
+                addResult.iterator->value.append(transitionIndex);
+            }
+        }
+
+        for (const auto& slot : transitionsPerTarget) {
+            dataLogF("        %d -> %d [label=\"", i, slot.key);
+
+            bool isFirst = true;
+            for (uint32_t rangeIndex : slot.value) {
+                if (!isFirst)
+                    dataLogF(", ");
+                else
+                    isFirst = false;
+
+                const ImmutableCharRange& range = transitions[rangeIndex];
+                if (range.first == range.last) {
+                    if (isASCIIPrintable(range.first))
+                    dataLogF("%c", range.first);
+                    else
+                    dataLogF("%d", range.first);
+                } else {
+                    if (isASCIIPrintable(range.first) && isASCIIPrintable(range.last))
+                    dataLogF("%c-%c", range.first, range.last);
+                    else
+                    dataLogF("%d-%d", range.first, range.last);
+                }
+            }
+            dataLogF("\"]\n");
+        }
+
+        for (uint32_t epsilonTargetIndex = node.epsilonTransitionTargetsStart; epsilonTargetIndex < node.epsilonTransitionTargetsEnd; ++epsilonTargetIndex) {
+            uint32_t target = epsilonTransitionsTargets[epsilonTargetIndex];
+            dataLogF("        %d -> %d [label=\"ɛ\"]\n", i, target);
+        }
+    }
+
+    dataLogF("    }\n");
+    dataLogF("}\n");
+}
+#endif
+
+} // namespace ContentExtensions
+
+} // namespace WebCore
+
+#endif // ENABLE(CONTENT_EXTENSIONS)