1 /*
2  * Copyright 2005 Frerich Raabe <raabe@kde.org>
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  *
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24  */
25 
26 #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_XML_XPATH_VARIABLE_REFERENCE_H_
27 #define THIRD_PARTY_BLINK_RENDERER_CORE_XML_XPATH_VARIABLE_REFERENCE_H_
28 
29 #include "third_party/blink/renderer/core/xml/xpath_expression_node.h"
30 
31 namespace blink {
32 
33 namespace xpath {
34 
35 // Variable references are not used with XPathEvaluator.
36 class VariableReference final : public Expression {
37  public:
38   explicit VariableReference(const String& name);
39 
40  private:
41   Value Evaluate(EvaluationContext&) const override;
ResultType()42   Value::Type ResultType() const override {
43     NOTREACHED();
44     return Value::kNumberValue;
45   }
46 
47   String name_;
48 };
49 
50 }  // namespace xpath
51 
52 }  // namespace blink
53 #endif  // THIRD_PARTY_BLINK_RENDERER_CORE_XML_XPATH_VARIABLE_REFERENCE_H_
54