1 files changed, 157 insertions, 0 deletions
diff --git a/gfx/skia/skia/src/core/SkFlattenable.cpp b/gfx/skia/skia/src/core/SkFlattenable.cpp
new file mode 100644
index 0000000000..9fb121d675
--- /dev/null
+++ b/gfx/skia/skia/src/core/SkFlattenable.cpp
@@ -0,0 +1,157 @@
+/*
+ * 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 "include/core/SkFlattenable.h"
+
+#include "include/core/SkData.h"
+#include "include/core/SkRefCnt.h"
+#include "include/core/SkTypes.h"
+#include "include/private/base/SkTDArray.h"
+#include "src/core/SkPtrRecorder.h"
+#include "src/core/SkReadBuffer.h"
+#include "src/core/SkWriteBuffer.h"
+
+#include <algorithm>
+#include <cstdint>
+#include <cstring>
+#include <iterator>
+#include <utility>
+
+struct SkDeserialProcs;
+struct SkSerialProcs;
+
+SkNamedFactorySet::SkNamedFactorySet() : fNextAddedFactory(0) {}
+
+uint32_t SkNamedFactorySet::find(SkFlattenable::Factory factory) {
+    uint32_t index = fFactorySet.find(factory);
+    if (index > 0) {
+        return index;
+    }
+    const char* name = SkFlattenable::FactoryToName(factory);
+    if (nullptr == name) {
+        return 0;
+    }
+    *fNames.append() = name;
+    return fFactorySet.add(factory);
+}
+
+const char* SkNamedFactorySet::getNextAddedFactoryName() {
+    if (fNextAddedFactory < fNames.size()) {
+        return fNames[fNextAddedFactory++];
+    }
+    return nullptr;
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+SkRefCntSet::~SkRefCntSet() {
+    // call this now, while our decPtr() is sill in scope
+    this->reset();
+}
+
+void SkRefCntSet::incPtr(void* ptr) {
+    ((SkRefCnt*)ptr)->ref();
+}
+
+void SkRefCntSet::decPtr(void* ptr) {
+    ((SkRefCnt*)ptr)->unref();
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+namespace {
+
+struct Entry {
+    const char*             fName;
+    SkFlattenable::Factory  fFactory;
+};
+
+struct EntryComparator {
+    bool operator()(const Entry& a, const Entry& b) const {
+        return strcmp(a.fName, b.fName) < 0;
+    }
+    bool operator()(const Entry& a, const char* b) const {
+        return strcmp(a.fName, b) < 0;
+    }
+    bool operator()(const char* a, const Entry& b) const {
+        return strcmp(a, b.fName) < 0;
+    }
+};
+
+int gCount = 0;
+Entry gEntries[128];
+
+}  // namespace
+
+void SkFlattenable::Finalize() {
+    std::sort(gEntries, gEntries + gCount, EntryComparator());
+}
+
+void SkFlattenable::Register(const char name[], Factory factory) {
+    SkASSERT(name);
+    SkASSERT(factory);
+    SkASSERT(gCount < (int)std::size(gEntries));
+
+    gEntries[gCount].fName = name;
+    gEntries[gCount].fFactory = factory;
+    gCount += 1;
+}
+
+SkFlattenable::Factory SkFlattenable::NameToFactory(const char name[]) {
+    RegisterFlattenablesIfNeeded();
+
+    SkASSERT(std::is_sorted(gEntries, gEntries + gCount, EntryComparator()));
+    auto pair = std::equal_range(gEntries, gEntries + gCount, name, EntryComparator());
+    if (pair.first == pair.second) {
+        return nullptr;
+    }
+    return pair.first->fFactory;
+}
+
+const char* SkFlattenable::FactoryToName(Factory fact) {
+    RegisterFlattenablesIfNeeded();
+
+    const Entry* entries = gEntries;
+    for (int i = gCount - 1; i >= 0; --i) {
+        if (entries[i].fFactory == fact) {
+            return entries[i].fName;
+        }
+    }
+    return nullptr;
+}
+
+///////////////////////////////////////////////////////////////////////////////////////////////////
+
+sk_sp<SkData> SkFlattenable::serialize(const SkSerialProcs* procs) const {
+    SkBinaryWriteBuffer writer;
+    if (procs) {
+        writer.setSerialProcs(*procs);
+    }
+    writer.writeFlattenable(this);
+    size_t size = writer.bytesWritten();
+    auto data = SkData::MakeUninitialized(size);
+    writer.writeToMemory(data->writable_data());
+    return data;
+}
+
+size_t SkFlattenable::serialize(void* memory, size_t memory_size,
+                                const SkSerialProcs* procs) const {
+  SkBinaryWriteBuffer writer(memory, memory_size);
+  if (procs) {
+      writer.setSerialProcs(*procs);
+  }
+  writer.writeFlattenable(this);
+  return writer.usingInitialStorage() ? writer.bytesWritten() : 0u;
+}
+
+sk_sp<SkFlattenable> SkFlattenable::Deserialize(SkFlattenable::Type type, const void* data,
+                                                size_t size, const SkDeserialProcs* procs) {
+    SkReadBuffer buffer(data, size);
+    if (procs) {
+        buffer.setDeserialProcs(*procs);
+    }
+    return sk_sp<SkFlattenable>(buffer.readFlattenable(type));
+}