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comparison: dom/smil/nsSMILParserUtils.h
dom/smil/nsSMILParserUtils.h
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #ifndef NS_SMILPARSERUTILS_H_ | |
| 7 #define NS_SMILPARSERUTILS_H_ | |
| 8 | |
| 9 #include "nsTArray.h" | |
| 10 #include "nsStringFwd.h" | |
| 11 | |
| 12 class nsISMILAttr; | |
| 13 class nsSMILKeySpline; | |
| 14 class nsSMILTimeValue; | |
| 15 class nsSMILValue; | |
| 16 class nsSMILRepeatCount; | |
| 17 class nsSMILTimeValueSpecParams; | |
| 18 | |
| 19 namespace mozilla { | |
| 20 namespace dom { | |
| 21 class SVGAnimationElement; | |
| 22 } | |
| 23 } | |
| 24 | |
| 25 /** | |
| 26 * Common parsing utilities for the SMIL module. There is little re-use here; it | |
| 27 * simply serves to simplify other classes by moving parsing outside and to aid | |
| 28 * unit testing. | |
| 29 */ | |
| 30 class nsSMILParserUtils | |
| 31 { | |
| 32 public: | |
| 33 // Abstract helper-class for assisting in parsing |values| attribute | |
| 34 class MOZ_STACK_CLASS GenericValueParser { | |
| 35 public: | |
| 36 virtual bool Parse(const nsAString& aValueStr) = 0; | |
| 37 }; | |
| 38 | |
| 39 static const nsDependentSubstring TrimWhitespace(const nsAString& aString); | |
| 40 | |
| 41 static bool ParseKeySplines(const nsAString& aSpec, | |
| 42 FallibleTArray<nsSMILKeySpline>& aKeySplines); | |
| 43 | |
| 44 // Used for parsing the |keyTimes| and |keyPoints| attributes. | |
| 45 static bool ParseSemicolonDelimitedProgressList(const nsAString& aSpec, | |
| 46 bool aNonDecreasing, | |
| 47 FallibleTArray<double>& aArray); | |
| 48 | |
| 49 static bool ParseValues(const nsAString& aSpec, | |
| 50 const mozilla::dom::SVGAnimationElement* aSrcElement, | |
| 51 const nsISMILAttr& aAttribute, | |
| 52 FallibleTArray<nsSMILValue>& aValuesArray, | |
| 53 bool& aPreventCachingOfSandwich); | |
| 54 | |
| 55 // Generic method that will run some code on each sub-section of an animation | |
| 56 // element's "values" list. | |
| 57 static bool ParseValuesGeneric(const nsAString& aSpec, | |
| 58 GenericValueParser& aParser); | |
| 59 | |
| 60 static bool ParseRepeatCount(const nsAString& aSpec, | |
| 61 nsSMILRepeatCount& aResult); | |
| 62 | |
| 63 static bool ParseTimeValueSpecParams(const nsAString& aSpec, | |
| 64 nsSMILTimeValueSpecParams& aResult); | |
| 65 | |
| 66 /* | |
| 67 * Parses a clock value as defined in the SMIL Animation specification. | |
| 68 * If parsing succeeds the returned value will be a non-negative, definite | |
| 69 * time value i.e. IsDefinite will return true. | |
| 70 * | |
| 71 * @param aSpec The string containing a clock value, e.g. "10s" | |
| 72 * @param aResult The parsed result. [OUT] | |
| 73 * @return true if parsing succeeded, otherwise false. | |
| 74 */ | |
| 75 static bool ParseClockValue(const nsAString& aSpec, | |
| 76 nsSMILTimeValue* aResult); | |
| 77 | |
| 78 /* | |
| 79 * This method checks whether the given string looks like a negative number. | |
| 80 * Specifically, it checks whether the string looks matches the pattern | |
| 81 * "[whitespace]*-[numeral].*" If the string matches this pattern, this | |
| 82 * method returns the index of the first character after the '-' sign | |
| 83 * (i.e. the index of the absolute value). If not, this method returns -1. | |
| 84 */ | |
| 85 static int32_t CheckForNegativeNumber(const nsAString& aStr); | |
| 86 }; | |
| 87 | |
| 88 #endif // NS_SMILPARSERUTILS_H_ |
