1 files changed, 95 insertions, 0 deletions
diff --git a/dom/xslt/xpath/txExprParser.h b/dom/xslt/xpath/txExprParser.h
new file mode 100644
index 0000000000..06c07cf232
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+++ b/dom/xslt/xpath/txExprParser.h
@@ -0,0 +1,95 @@
+/* -*- Mode: C++; tab-width: 4; 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/. */
+
+/**
+ * ExprParser
+ * This class is used to parse XSL Expressions
+ * @see ExprLexer
+ **/
+
+#ifndef MITREXSL_EXPRPARSER_H
+#define MITREXSL_EXPRPARSER_H
+
+#include "txCore.h"
+#include "mozilla/UniquePtr.h"
+#include "nsString.h"
+
+class Expr;
+class txExprLexer;
+class FunctionCall;
+class LocationStep;
+class nsAtom;
+class PredicateList;
+class Token;
+class txIParseContext;
+class txNodeTest;
+
+class txExprParser {
+ public:
+  static nsresult createExpr(const nsAString& aExpression,
+                             txIParseContext* aContext, Expr** aExpr) {
+    return createExprInternal(aExpression, 0, aContext, aExpr);
+  }
+
+  /**
+   * Creates an Attribute Value Template using the given value
+   */
+  static nsresult createAVT(const nsAString& aAttrValue,
+                            txIParseContext* aContext, Expr** aResult);
+
+ protected:
+  static nsresult createExprInternal(const nsAString& aExpression,
+                                     uint32_t aSubStringPos,
+                                     txIParseContext* aContext, Expr** aExpr);
+  /**
+   * Using nsAutoPtr& to optimize passing the ownership to the
+   * created binary expression objects.
+   */
+  static nsresult createBinaryExpr(mozilla::UniquePtr<Expr>& left,
+                                   mozilla::UniquePtr<Expr>& right, Token* op,
+                                   Expr** aResult);
+  static nsresult createExpr(txExprLexer& lexer, txIParseContext* aContext,
+                             Expr** aResult);
+  static nsresult createFilterOrStep(txExprLexer& lexer,
+                                     txIParseContext* aContext, Expr** aResult);
+  static nsresult createFunctionCall(txExprLexer& lexer,
+                                     txIParseContext* aContext, Expr** aResult);
+  static nsresult createLocationStep(txExprLexer& lexer,
+                                     txIParseContext* aContext, Expr** aResult);
+  static nsresult createNodeTypeTest(txExprLexer& lexer, txNodeTest** aResult);
+  static nsresult createPathExpr(txExprLexer& lexer, txIParseContext* aContext,
+                                 Expr** aResult);
+  static nsresult createUnionExpr(txExprLexer& lexer, txIParseContext* aContext,
+                                  Expr** aResult);
+
+  static bool isLocationStepToken(Token* aToken);
+
+  static short precedence(Token* aToken);
+
+  /**
+   * Resolve a QName, given the mContext parse context.
+   * Returns prefix and localName as well as namespace ID
+   */
+  static nsresult resolveQName(const nsAString& aQName, nsAtom** aPrefix,
+                               txIParseContext* aContext, nsAtom** aLocalName,
+                               int32_t& aNamespace, bool aIsNameTest = false);
+
+  /**
+   * Using the given lexer, parses the tokens if they represent a
+   * predicate list
+   * If an error occurs a non-zero String pointer will be returned
+   * containing the error message.
+   * @param predicateList, the PredicateList to add predicate expressions to
+   * @param lexer the ExprLexer to use for parsing tokens
+   * @return 0 if successful, or a String pointer to the error message
+   */
+  static nsresult parsePredicates(PredicateList* aPredicateList,
+                                  txExprLexer& lexer,
+                                  txIParseContext* aContext);
+  static nsresult parseParameters(FunctionCall* aFnCall, txExprLexer& lexer,
+                                  txIParseContext* aContext);
+};
+
+#endif