1 files changed, 132 insertions, 0 deletions
diff --git a/dom/xslt/xpath/txIXPathContext.h b/dom/xslt/xpath/txIXPathContext.h
new file mode 100644
index 0000000000..8d5b5df4be
--- /dev/null
+++ b/dom/xslt/xpath/txIXPathContext.h
@@ -0,0 +1,132 @@
+/* -*- 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/. */
+
+#ifndef __TX_I_XPATH_CONTEXT
+#define __TX_I_XPATH_CONTEXT
+
+#include "nscore.h"
+#include "nsISupportsImpl.h"
+#include "nsStringFwd.h"
+
+class FunctionCall;
+class nsAtom;
+class txAExprResult;
+class txResultRecycler;
+class txXPathNode;
+
+/*
+ * txIParseContext
+ *
+ * This interface describes the context needed to create
+ * XPath Expressions and XSLT Patters.
+ * (not completely though. key() requires the ProcessorState, which is
+ * not part of this interface.)
+ */
+
+class txIParseContext {
+ public:
+  virtual ~txIParseContext() = default;
+
+  /*
+   * Return a namespaceID for a given prefix.
+   */
+  virtual nsresult resolveNamespacePrefix(nsAtom* aPrefix, int32_t& aID) = 0;
+
+  /*
+   * Create a FunctionCall, needed for extension function calls and
+   * XSLT. XPath function calls are resolved by the Parser.
+   */
+  virtual nsresult resolveFunctionCall(nsAtom* aName, int32_t aID,
+                                       FunctionCall** aFunction) = 0;
+
+  /**
+   * Should nametests parsed in this context be case-sensitive
+   */
+  virtual bool caseInsensitiveNameTests() = 0;
+
+  /*
+   * Callback to be used by the Parser if errors are detected.
+   */
+  virtual void SetErrorOffset(uint32_t aOffset) = 0;
+
+  enum Allowed { KEY_FUNCTION = 1 << 0 };
+  virtual bool allowed(Allowed aAllowed) { return true; }
+};
+
+/*
+ * txIMatchContext
+ *
+ * Interface used for matching XSLT Patters.
+ * This is the part of txIEvalContext (see below), that is independent
+ * of the context node when evaluating a XPath expression, too.
+ * When evaluating a XPath expression, |txIMatchContext|s are used
+ * to transport the information from Step to Step.
+ */
+class txIMatchContext {
+ public:
+  virtual ~txIMatchContext() = default;
+
+  /*
+   * Return the ExprResult associated with the variable with the
+   * given namespace and local name.
+   */
+  virtual nsresult getVariable(int32_t aNamespace, nsAtom* aLName,
+                               txAExprResult*& aResult) = 0;
+
+  /*
+   * Is whitespace stripping allowed for the given node?
+   * See http://www.w3.org/TR/xslt#strip
+   */
+  virtual nsresult isStripSpaceAllowed(const txXPathNode& aNode,
+                                       bool& aAllowed) = 0;
+
+  /**
+   * Returns a pointer to the private context
+   */
+  virtual void* getPrivateContext() = 0;
+
+  virtual txResultRecycler* recycler() = 0;
+
+  /*
+   * Callback to be used by the expression/pattern if errors are detected.
+   */
+  virtual void receiveError(const nsAString& aMsg, nsresult aRes) = 0;
+};
+
+#define TX_DECL_MATCH_CONTEXT                                            \
+  nsresult getVariable(int32_t aNamespace, nsAtom* aLName,               \
+                       txAExprResult*& aResult) override;                \
+  nsresult isStripSpaceAllowed(const txXPathNode& aNode, bool& aAllowed) \
+      override;                                                          \
+  void* getPrivateContext() override;                                    \
+  txResultRecycler* recycler() override;                                 \
+  void receiveError(const nsAString& aMsg, nsresult aRes) override
+
+class txIEvalContext : public txIMatchContext {
+ public:
+  /*
+   * Get the context node.
+   */
+  virtual const txXPathNode& getContextNode() = 0;
+
+  /*
+   * Get the size of the context node set.
+   */
+  virtual uint32_t size() = 0;
+
+  /*
+   * Get the position of the context node in the context node set,
+   * starting with 1.
+   */
+  virtual uint32_t position() = 0;
+};
+
+#define TX_DECL_EVAL_CONTEXT                    \
+  TX_DECL_MATCH_CONTEXT;                        \
+  const txXPathNode& getContextNode() override; \
+  uint32_t size() override;                     \
+  uint32_t position() override
+
+#endif  // __TX_I_XPATH_CONTEXT