Throw exception if querying SVGAnimationElement with unresolved interval

Source/core/svg/SVGAnimationElement.cpp

 /*
  * Copyright (C) 2004, 2005 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
  * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Cameron McCormack <cam@mcc.id.au>
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #include "config.h"
-
 #include "core/svg/SVGAnimationElement.h"
 
+#include "bindings/core/v8/ExceptionState.h"
 #include "core/CSSPropertyNames.h"
 #include "core/SVGNames.h"
 #include "core/css/CSSComputedStyleDeclaration.h"
 #include "core/css/parser/CSSParser.h"
 #include "core/frame/UseCounter.h"
 #include "core/svg/SVGAnimateElement.h"
 #include "core/svg/SVGElement.h"
 #include "core/svg/SVGParserUtilities.h"
 #include "platform/FloatConversion.h"
 #include "wtf/MathExtras.h"
@@ skipping 190 matching lines @@
 
 void SVGAnimationElement::animationAttributeChanged()
 {
     // Assumptions may not hold after an attribute change.
     m_animationValid = false;
     m_lastValuesAnimationFrom = String();
     m_lastValuesAnimationTo = String();
     setInactive();
 }
 
-float SVGAnimationElement::getStartTime() const
+float SVGAnimationElement::getStartTime(ExceptionState& exceptionState) const
 {
-    return narrowPrecisionToFloat(intervalBegin().value());
+    SMILTime startTime = intervalBegin();
+    if (!startTime.isFinite()) {
+        exceptionState.throwDOMException(InvalidStateError, "No current interval.");
+        return 0;
+    }
+    return narrowPrecisionToFloat(startTime.value());
 }
 
 float SVGAnimationElement::getCurrentTime() const
 {
     return narrowPrecisionToFloat(elapsed().value());
 }
 
-float SVGAnimationElement::getSimpleDuration() const
+float SVGAnimationElement::getSimpleDuration(ExceptionState& exceptionState) const
 {
-    return narrowPrecisionToFloat(simpleDuration().value());
+    SMILTime duration = simpleDuration();
+    if (!duration.isFinite()) {
+        exceptionState.throwDOMException(NotSupportedError, "No simple duration defined.");
+        return 0;
+    }
+    return narrowPrecisionToFloat(duration.value());
 }
 
 void SVGAnimationElement::beginElement()
 {
     beginElementAt(0);
 }
 
 void SVGAnimationElement::beginElementAt(float offset)
 {
     ASSERT(std::isfinite(offset));
@@ skipping 450 matching lines @@
         if (!hasInvalidCSSAttributeType)
             schedule();
     }
 
     // Clear values that may depend on the previous target.
     if (targetElement())
         clearAnimatedType();
 }
 
 }