1 /*
2  * Copyright (c) 2011-2014, Intel Corporation
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without modification,
6  * are permitted provided that the following conditions are met:
7  *
8  * 1. Redistributions of source code must retain the above copyright notice, this
9  * list of conditions and the following disclaimer.
10  *
11  * 2. Redistributions in binary form must reproduce the above copyright notice,
12  * this list of conditions and the following disclaimer in the documentation and/or
13  * other materials provided with the distribution.
14  *
15  * 3. Neither the name of the copyright holder nor the names of its contributors
16  * may be used to endorse or promote products derived from this software without
17  * specific prior written permission.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
21  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
22  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
23  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
24  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
26  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
28  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29  */
30 #pragma once
31 
32 #include <string>
33 #include <stdint.h>
34 
35 class CCompoundRule;
36 class CSelectionCriteriaDefinition;
37 
38 class CRuleParser
39 {
40 public:
41     enum Status {
42         EInit,
43         EBeginCompoundRule,
44         EEndCompoundRule,
45         ECriterionRule,
46         EContinue,
47         EDone,
48 
49         ENbStatuses
50     };
51 
52     CRuleParser(const std::string& strApplicationRule, const CSelectionCriteriaDefinition* pSelectionCriteriaDefinition);
53     ~CRuleParser();
54 
55     // Parse
56     bool parse(CCompoundRule* pParentRule, std::string& strError);
57 
58     // Iterate
59     bool iterate(std::string& strError);
60 
61     // Next word
62     bool next(std::string& strNext, std::string& strError);
63 
64     // Rule type
65     const std::string& getType() const;
66 
67     // Criteria defintion
68     const CSelectionCriteriaDefinition* getSelectionCriteriaDefinition() const;
69 
70     // Root rule
71     CCompoundRule* grabRootRule();
72 private:
73 
74     CRuleParser(const CRuleParser&);
75     CRuleParser& operator=(const CRuleParser&);
76 
77     // Rule definition
78     std::string _strApplicationRule;
79     // Criteria defintion
80     const CSelectionCriteriaDefinition* _pSelectionCriteriaDefinition;
81     /** String iterator */
82     std::string::size_type _uiCurrentPos;
83     // Deepness
84     uint32_t _uiCurrentDeepness;
85     // Current Type
86     std::string _strRuleType;
87     // Status
88     Status _eStatus;
89     // Root rule
90     CCompoundRule* _pRootRule;
91     // Matches
92     static const char* _acDelimiters[ENbStatuses];
93 };
94 
95