1 files changed, 89 insertions, 0 deletions
diff --git a/dom/smil/SMILParserUtils.h b/dom/smil/SMILParserUtils.h
new file mode 100644
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+++ b/dom/smil/SMILParserUtils.h
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+/* -*- 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 DOM_SMIL_SMILPARSERUTILS_H_
+#define DOM_SMIL_SMILPARSERUTILS_H_
+
+#include "nsTArray.h"
+#include "nsStringFwd.h"
+
+namespace mozilla {
+
+class SMILAttr;
+class SMILKeySpline;
+class SMILRepeatCount;
+class SMILTimeValue;
+class SMILTimeValueSpecParams;
+class SMILValue;
+
+namespace dom {
+class SVGAnimationElement;
+}  // namespace dom
+
+/**
+ * Common parsing utilities for the SMIL module. There is little re-use here; it
+ * simply serves to simplify other classes by moving parsing outside and to aid
+ * unit testing.
+ */
+class SMILParserUtils {
+ public:
+  // Abstract helper-class for assisting in parsing |values| attribute
+  class MOZ_STACK_CLASS GenericValueParser {
+   public:
+    virtual bool Parse(const nsAString& aValueStr) = 0;
+  };
+
+  static const nsDependentSubstring TrimWhitespace(const nsAString& aString);
+
+  static bool ParseKeySplines(const nsAString& aSpec,
+                              FallibleTArray<SMILKeySpline>& aKeySplines);
+
+  // Used for parsing the |keyTimes| and |keyPoints| attributes.
+  static bool ParseSemicolonDelimitedProgressList(
+      const nsAString& aSpec, bool aNonDecreasing,
+      FallibleTArray<double>& aArray);
+
+  static bool ParseValues(const nsAString& aSpec,
+                          const mozilla::dom::SVGAnimationElement* aSrcElement,
+                          const SMILAttr& aAttribute,
+                          FallibleTArray<SMILValue>& aValuesArray,
+                          bool& aPreventCachingOfSandwich);
+
+  // Generic method that will run some code on each sub-section of an animation
+  // element's "values" list.
+  static bool ParseValuesGeneric(const nsAString& aSpec,
+                                 GenericValueParser& aParser);
+
+  static bool ParseRepeatCount(const nsAString& aSpec,
+                               SMILRepeatCount& aResult);
+
+  static bool ParseTimeValueSpecParams(const nsAString& aSpec,
+                                       SMILTimeValueSpecParams& aResult);
+
+  /*
+   * Parses a clock value as defined in the SMIL Animation specification.
+   * If parsing succeeds the returned value will be a non-negative, definite
+   * time value i.e. IsDefinite will return true.
+   *
+   * @param aSpec    The string containing a clock value, e.g. "10s"
+   * @param aResult  The parsed result. [OUT]
+   * @return true if parsing succeeded, otherwise false.
+   */
+  static bool ParseClockValue(const nsAString& aSpec, SMILTimeValue* aResult);
+
+  /*
+   * This method checks whether the given string looks like a negative number.
+   * Specifically, it checks whether the string looks matches the pattern
+   * "[whitespace]*-[numeral].*" If the string matches this pattern, this
+   * method returns the index of the first character after the '-' sign
+   * (i.e. the index of the absolute value).  If not, this method returns -1.
+   */
+  static int32_t CheckForNegativeNumber(const nsAString& aStr);
+};
+
+}  // namespace mozilla
+
+#endif  // DOM_SMIL_SMILPARSERUTILS_H_