1 files changed, 147 insertions, 0 deletions
diff --git a/layout/style/CSSVariableValues.cpp b/layout/style/CSSVariableValues.cpp
new file mode 100644
index 000000000..e6f1faf26
--- /dev/null
+++ b/layout/style/CSSVariableValues.cpp
@@ -0,0 +1,147 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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/. */
+
+/* computed CSS Variable values */
+
+#include "CSSVariableValues.h"
+
+#include "CSSVariableResolver.h"
+
+namespace mozilla {
+
+CSSVariableValues::CSSVariableValues()
+{
+  MOZ_COUNT_CTOR(CSSVariableValues);
+}
+
+CSSVariableValues::CSSVariableValues(const CSSVariableValues& aOther)
+{
+  MOZ_COUNT_CTOR(CSSVariableValues);
+  CopyVariablesFrom(aOther);
+}
+
+#ifdef DEBUG
+CSSVariableValues::~CSSVariableValues()
+{
+  MOZ_COUNT_DTOR(CSSVariableValues);
+}
+#endif
+
+CSSVariableValues&
+CSSVariableValues::operator=(const CSSVariableValues& aOther)
+{
+  if (this == &aOther) {
+    return *this;
+  }
+
+  mVariableIDs.Clear();
+  mVariables.Clear();
+  CopyVariablesFrom(aOther);
+  return *this;
+}
+
+bool
+CSSVariableValues::operator==(const CSSVariableValues& aOther) const
+{
+  if (mVariables.Length() != aOther.mVariables.Length()) {
+    return false;
+  }
+
+  for (size_t thisIndex = 0; thisIndex < mVariables.Length(); ++thisIndex) {
+    size_t otherIndex;
+    if (!aOther.mVariableIDs.Get(mVariables[thisIndex].mVariableName,
+                                 &otherIndex)) {
+      return false;
+    }
+    const nsString& otherValue = aOther.mVariables[otherIndex].mValue;
+    if (!mVariables[thisIndex].mValue.Equals(otherValue)) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+size_t
+CSSVariableValues::Count() const
+{
+  return mVariables.Length();
+}
+
+bool
+CSSVariableValues::Get(const nsAString& aName, nsString& aValue) const
+{
+  size_t id;
+  if (!mVariableIDs.Get(aName, &id)) {
+    return false;
+  }
+  aValue = mVariables[id].mValue;
+  return true;
+}
+
+bool
+CSSVariableValues::Get(const nsAString& aName,
+                       nsString& aValue,
+                       nsCSSTokenSerializationType& aFirstToken,
+                       nsCSSTokenSerializationType& aLastToken) const
+{
+  size_t id;
+  if (!mVariableIDs.Get(aName, &id)) {
+    return false;
+  }
+  aValue = mVariables[id].mValue;
+  aFirstToken = mVariables[id].mFirstToken;
+  aLastToken = mVariables[id].mLastToken;
+  return true;
+}
+
+void
+CSSVariableValues::GetVariableAt(size_t aIndex, nsAString& aName) const
+{
+  aName = mVariables[aIndex].mVariableName;
+}
+
+void
+CSSVariableValues::Put(const nsAString& aName,
+                       nsString aValue,
+                       nsCSSTokenSerializationType aFirstToken,
+                       nsCSSTokenSerializationType aLastToken)
+{
+  size_t id;
+  if (mVariableIDs.Get(aName, &id)) {
+    mVariables[id].mValue = aValue;
+    mVariables[id].mFirstToken = aFirstToken;
+    mVariables[id].mLastToken = aLastToken;
+  } else {
+    id = mVariables.Length();
+    mVariableIDs.Put(aName, id);
+    mVariables.AppendElement(Variable(aName, aValue, aFirstToken, aLastToken));
+  }
+}
+
+void
+CSSVariableValues::CopyVariablesFrom(const CSSVariableValues& aOther)
+{
+  for (size_t i = 0, n = aOther.mVariables.Length(); i < n; i++) {
+    Put(aOther.mVariables[i].mVariableName,
+        aOther.mVariables[i].mValue,
+        aOther.mVariables[i].mFirstToken,
+        aOther.mVariables[i].mLastToken);
+  }
+}
+
+void
+CSSVariableValues::AddVariablesToResolver(CSSVariableResolver* aResolver) const
+{
+  for (size_t i = 0, n = mVariables.Length(); i < n; i++) {
+    aResolver->Put(mVariables[i].mVariableName,
+                   mVariables[i].mValue,
+                   mVariables[i].mFirstToken,
+                   mVariables[i].mLastToken,
+                   true);
+  }
+}
+
+} // namespace mozilla