import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

dom/smil/SMILStringType.cpp

@@ -0,0 +1,91 @@
+/* -*- 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/. */
+
+#include "SMILStringType.h"
+#include "nsSMILValue.h"
+#include "nsDebug.h"
+#include "nsString.h"
+
+namespace mozilla {
+
+void
+SMILStringType::Init(nsSMILValue& aValue) const
+{
+  NS_PRECONDITION(aValue.IsNull(), "Unexpected value type");
+  aValue.mU.mPtr = new nsString();
+  aValue.mType = this;
+}
+
+void
+SMILStringType::Destroy(nsSMILValue& aValue) const
+{
+  NS_PRECONDITION(aValue.mType == this, "Unexpected SMIL value");
+  delete static_cast<nsAString*>(aValue.mU.mPtr);
+  aValue.mU.mPtr = nullptr;
+  aValue.mType = nsSMILNullType::Singleton();
+}
+
+nsresult
+SMILStringType::Assign(nsSMILValue& aDest, const nsSMILValue& aSrc) const
+{
+  NS_PRECONDITION(aDest.mType == aSrc.mType, "Incompatible SMIL types");
+  NS_PRECONDITION(aDest.mType == this, "Unexpected SMIL value");
+
+  const nsAString* src = static_cast<const nsAString*>(aSrc.mU.mPtr);
+  nsAString* dst = static_cast<nsAString*>(aDest.mU.mPtr);
+  *dst = *src;
+  return NS_OK;
+}
+
+bool
+SMILStringType::IsEqual(const nsSMILValue& aLeft,
+                        const nsSMILValue& aRight) const
+{
+  NS_PRECONDITION(aLeft.mType == aRight.mType, "Incompatible SMIL types");
+  NS_PRECONDITION(aLeft.mType == this, "Unexpected type for SMIL value");
+
+  const nsAString* leftString =
+    static_cast<const nsAString*>(aLeft.mU.mPtr);
+  const nsAString* rightString =
+    static_cast<nsAString*>(aRight.mU.mPtr);
+  return *leftString == *rightString;
+}
+
+nsresult
+SMILStringType::Add(nsSMILValue& aDest, const nsSMILValue& aValueToAdd,
+                    uint32_t aCount) const
+{
+  NS_PRECONDITION(aValueToAdd.mType == aDest.mType,
+                  "Trying to add invalid types");
+  NS_PRECONDITION(aValueToAdd.mType == this, "Unexpected source type");
+  return NS_ERROR_FAILURE; // string values can't be added to each other
+}
+
+nsresult
+SMILStringType::ComputeDistance(const nsSMILValue& aFrom,
+                                const nsSMILValue& aTo,
+                                double& aDistance) const
+{
+  NS_PRECONDITION(aFrom.mType == aTo.mType,"Trying to compare different types");
+  NS_PRECONDITION(aFrom.mType == this, "Unexpected source type");
+  return NS_ERROR_FAILURE; // there is no concept of distance between string values
+}
+
+nsresult
+SMILStringType::Interpolate(const nsSMILValue& aStartVal,
+                            const nsSMILValue& aEndVal,
+                            double aUnitDistance,
+                            nsSMILValue& aResult) const
+{
+  NS_PRECONDITION(aStartVal.mType == aEndVal.mType,
+      "Trying to interpolate different types");
+  NS_PRECONDITION(aStartVal.mType == this,
+      "Unexpected types for interpolation");
+  NS_PRECONDITION(aResult.mType   == this, "Unexpected result type");
+  return NS_ERROR_FAILURE; // string values do not interpolate
+}
+
+} // namespace mozilla