The Tor Browser / file comparison
comparison: dom/xslt/xpath/txExprParser.h
dom/xslt/xpath/txExprParser.h
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- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:1a2ba371ce9f |
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| 1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ | |
| 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 /** | |
| 7 * ExprParser | |
| 8 * This class is used to parse XSL Expressions | |
| 9 * @see ExprLexer | |
| 10 **/ | |
| 11 | |
| 12 #ifndef MITREXSL_EXPRPARSER_H | |
| 13 #define MITREXSL_EXPRPARSER_H | |
| 14 | |
| 15 #include "txCore.h" | |
| 16 #include "nsAutoPtr.h" | |
| 17 #include "nsString.h" | |
| 18 | |
| 19 class AttributeValueTemplate; | |
| 20 class Expr; | |
| 21 class txExprLexer; | |
| 22 class FunctionCall; | |
| 23 class LocationStep; | |
| 24 class nsIAtom; | |
| 25 class PredicateList; | |
| 26 class Token; | |
| 27 class txIParseContext; | |
| 28 class txNodeTest; | |
| 29 class txNodeTypeTest; | |
| 30 | |
| 31 class txExprParser | |
| 32 { | |
| 33 public: | |
| 34 | |
| 35 static nsresult createExpr(const nsSubstring& aExpression, | |
| 36 txIParseContext* aContext, Expr** aExpr) | |
| 37 { | |
| 38 return createExprInternal(aExpression, 0, aContext, aExpr); | |
| 39 } | |
| 40 | |
| 41 /** | |
| 42 * Creates an Attribute Value Template using the given value | |
| 43 */ | |
| 44 static nsresult createAVT(const nsSubstring& aAttrValue, | |
| 45 txIParseContext* aContext, | |
| 46 Expr** aResult); | |
| 47 | |
| 48 | |
| 49 protected: | |
| 50 static nsresult createExprInternal(const nsSubstring& aExpression, | |
| 51 uint32_t aSubStringPos, | |
| 52 txIParseContext* aContext, | |
| 53 Expr** aExpr); | |
| 54 /** | |
| 55 * Using nsAutoPtr& to optimize passing the ownership to the | |
| 56 * created binary expression objects. | |
| 57 */ | |
| 58 static nsresult createBinaryExpr(nsAutoPtr<Expr>& left, | |
| 59 nsAutoPtr<Expr>& right, Token* op, | |
| 60 Expr** aResult); | |
| 61 static nsresult createExpr(txExprLexer& lexer, txIParseContext* aContext, | |
| 62 Expr** aResult); | |
| 63 static nsresult createFilterOrStep(txExprLexer& lexer, | |
| 64 txIParseContext* aContext, | |
| 65 Expr** aResult); | |
| 66 static nsresult createFunctionCall(txExprLexer& lexer, | |
| 67 txIParseContext* aContext, | |
| 68 Expr** aResult); | |
| 69 static nsresult createLocationStep(txExprLexer& lexer, | |
| 70 txIParseContext* aContext, | |
| 71 Expr** aResult); | |
| 72 static nsresult createNodeTypeTest(txExprLexer& lexer, | |
| 73 txNodeTest** aResult); | |
| 74 static nsresult createPathExpr(txExprLexer& lexer, | |
| 75 txIParseContext* aContext, | |
| 76 Expr** aResult); | |
| 77 static nsresult createUnionExpr(txExprLexer& lexer, | |
| 78 txIParseContext* aContext, | |
| 79 Expr** aResult); | |
| 80 | |
| 81 static bool isLocationStepToken(Token* aToken); | |
| 82 | |
| 83 static short precedence(Token* aToken); | |
| 84 | |
| 85 /** | |
| 86 * Resolve a QName, given the mContext parse context. | |
| 87 * Returns prefix and localName as well as namespace ID | |
| 88 */ | |
| 89 static nsresult resolveQName(const nsAString& aQName, nsIAtom** aPrefix, | |
| 90 txIParseContext* aContext, | |
| 91 nsIAtom** aLocalName, int32_t& aNamespace, | |
| 92 bool aIsNameTest = false); | |
| 93 | |
| 94 /** | |
| 95 * Using the given lexer, parses the tokens if they represent a | |
| 96 * predicate list | |
| 97 * If an error occurs a non-zero String pointer will be returned | |
| 98 * containing the error message. | |
| 99 * @param predicateList, the PredicateList to add predicate expressions to | |
| 100 * @param lexer the ExprLexer to use for parsing tokens | |
| 101 * @return 0 if successful, or a String pointer to the error message | |
| 102 */ | |
| 103 static nsresult parsePredicates(PredicateList* aPredicateList, | |
| 104 txExprLexer& lexer, | |
| 105 txIParseContext* aContext); | |
| 106 static nsresult parseParameters(FunctionCall* aFnCall, txExprLexer& lexer, | |
| 107 txIParseContext* aContext); | |
| 108 | |
| 109 }; | |
| 110 | |
| 111 #endif |
