Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 93 insertions, 0 deletions

diff --git a/gfx/2d/RecordingTypes.h b/gfx/2d/RecordingTypes.h
new file mode 100644
index 0000000000..94325b1295
--- /dev/null
+++ b/gfx/2d/RecordingTypes.h
@@ -0,0 +1,93 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef MOZILLA_GFX_RECORDINGTYPES_H_
+#define MOZILLA_GFX_RECORDINGTYPES_H_
+
+#include <ostream>
+#include <vector>
+
+#include "Logging.h"
+
+namespace mozilla {
+namespace gfx {
+
+template <class S, class T>
+struct ElementStreamFormat {
+  static void Write(S& aStream, const T& aElement) {
+    aStream.write(reinterpret_cast<const char*>(&aElement), sizeof(T));
+  }
+  static void Read(S& aStream, T& aElement) {
+    aStream.read(reinterpret_cast<char*>(&aElement), sizeof(T));
+  }
+};
+template <class S>
+struct ElementStreamFormat<S, bool> {
+  static void Write(S& aStream, const bool& aElement) {
+    char boolChar = aElement ? '\x01' : '\x00';
+    aStream.write(&boolChar, sizeof(boolChar));
+  }
+  static void Read(S& aStream, bool& aElement) {
+    char boolChar;
+    aStream.read(&boolChar, sizeof(boolChar));
+    switch (boolChar) {
+      case '\x00':
+        aElement = false;
+        break;
+      case '\x01':
+        aElement = true;
+        break;
+      default:
+        aStream.SetIsBad();
+        break;
+    }
+  }
+};
+
+template <class S, class T>
+void WriteElement(S& aStream, const T& aElement) {
+  ElementStreamFormat<S, T>::Write(aStream, aElement);
+}
+template <class S, class T>
+void WriteVector(S& aStream, const std::vector<T>& aVector) {
+  size_t size = aVector.size();
+  WriteElement(aStream, size);
+  if (size) {
+    aStream.write(reinterpret_cast<const char*>(aVector.data()),
+                  sizeof(T) * size);
+  }
+}
+
+// ReadElement is disabled for enum types. Use ReadElementConstrained instead.
+template <class S, class T,
+          typename = typename std::enable_if<!std::is_enum<T>::value>::type>
+void ReadElement(S& aStream, T& aElement) {
+  ElementStreamFormat<S, T>::Read(aStream, aElement);
+}
+template <class S, class T>
+void ReadElementConstrained(S& aStream, T& aElement, const T& aMinValue,
+                            const T& aMaxValue) {
+  ElementStreamFormat<S, T>::Read(aStream, aElement);
+  if (aElement < aMinValue || aElement > aMaxValue) {
+    aStream.SetIsBad();
+  }
+}
+template <class S, class T>
+void ReadVector(S& aStream, std::vector<T>& aVector) {
+  size_t size;
+  ReadElement(aStream, size);
+  if (size && aStream.good()) {
+    aVector.resize(size);
+    aStream.read(reinterpret_cast<char*>(aVector.data()), sizeof(T) * size);
+  } else {
+    aVector.clear();
+  }
+}
+
+}  // namespace gfx
+}  // namespace mozilla
+
+#endif /* MOZILLA_GFX_RECORDINGTYPES_H_ */