src/selection/SelectionEvaluator.hpp

/*
 * Copyright (c) 2005 The University of Notre Dame. All Rights Reserved.
 *
 * The University of Notre Dame grants you ("Licensee") a
 * non-exclusive, royalty free, license to use, modify and
 * redistribute this software in source and binary code form, provided
 * that the following conditions are met:
 *
 * 1. Acknowledgement of the program authors must be made in any
 *    publication of scientific results based in part on use of the
 *    program.  An acceptable form of acknowledgement is citation of
 *    the article in which the program was described (Matthew
 *    A. Meineke, Charles F. Vardeman II, Teng Lin, Christopher
 *    J. Fennell and J. Daniel Gezelter, "OOPSE: An Object-Oriented
 *    Parallel Simulation Engine for Molecular Dynamics,"
 *    J. Comput. Chem. 26, pp. 252-271 (2005))
 *
 * 2. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 3. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the
 *    distribution.
 *
 * This software is provided "AS IS," without a warranty of any
 * kind. All express or implied conditions, representations and
 * warranties, including any implied warranty of merchantability,
 * fitness for a particular purpose or non-infringement, are hereby
 * excluded.  The University of Notre Dame and its licensors shall not
 * be liable for any damages suffered by licensee as a result of
 * using, modifying or distributing the software or its
 * derivatives. In no event will the University of Notre Dame or its
 * licensors be liable for any lost revenue, profit or data, or for
 * direct, indirect, special, consequential, incidental or punitive
 * damages, however caused and regardless of the theory of liability,
 * arising out of the use of or inability to use software, even if the
 * University of Notre Dame has been advised of the possibility of
 * such damages.
 */

#ifndef SELECTION_SELECTIONEVALUATOR_HPP
#define SELECTION_SELECTIONEVALUATOR_HPP

#include <map>
#include <string>
#include <vector>

#include "brains/SimInfo.hpp"
#include "selection/Token.hpp"
#include "selection/SelectionCompiler.hpp"
#include "selection/NameFinder.hpp"
#include "utils/BitSet.hpp"
#include "primitives/StuntDouble.hpp"
namespace oopse {


class Context {
    public:
        
        void clear() {
            linenumbers.clear();
            lineIndices.clear();
            aatoken.clear();
        }
        
        std::string filename;
        std::string script;
        std::vector<int> linenumbers;
        std::vector<int> lineIndices;
        std::vector<std::vector<Token> > aatoken;
        int pc;
};


/**
 * @class SelectionEvaluator SelectionEvaluator.hpp "selection/SelectionEvaluator"
 * @brief Evalute the tokens compiled by SelectionCompiler and return a BitSet
 */
class SelectionEvaluator{
    public:

        SelectionEvaluator(SimInfo* info, const std::string& script);


        BitSet evaluate();
        
        BitSet evaluate(int frameNo);

        /**
         * Tests if the result from evaluation of script is static.
         * @return true if the result keeps the same even the frame change, otherwise return false
         */         
        bool isStatic();

        bool hadRuntimeError() const{
            return error;
        }

        std::string getErrorMessage() const {
            return errorMessage;
        }


        int getLinenumber() {
            return linenumbers[pc];
        }

        std::string getLine() {
            int ichBegin = lineIndices[pc];
            int ichEnd;
            if ((ichEnd = script.find('\r', ichBegin)) == std::string::npos &&
                (ichEnd = script.find('\n', ichBegin)) == std::string::npos) {
                ichEnd = script.size();
            }            
            return script.substr(ichBegin, ichEnd);
        }
  
    private:

        void clearState();
        
        bool loadScript(const std::string& filename, const std::string& script); 
        bool loadScriptString(const std::string& script);
        bool loadScriptFileInternal(const std::string& filename);
        bool loadScriptFile(const std::string& filename);

        void clearDefinitionsAndLoadPredefined();
         
        void define();
        void select();
        void predefine(const std::string& script);

        void instructionDispatchLoop();

        void withinInstruction(const Token& instruction, BitSet& bs);
        
        BitSet comparatorInstruction(const Token& instruction); 
        void compareProperty(StuntDouble* sd, BitSet& bs, int property, int comparator, float comparisonValue);
        BitSet nameInstruction(const std::string& name);

        BitSet expression(const std::vector<Token>& tokens, int pc);

        BitSet lookupValue(const std::string& variable);
        
        void evalError(const std::string& message);

        void unrecognizedCommand(const Token& token) {
            evalError("unrecognized command:" + boost::any_cast<std::string>(token.value));
        }        

        void unrecognizedExpression() {
            evalError("unrecognized expression");
        }

        void unrecognizedAtomProperty(int property){
            evalError("unrecognized atom property");
        }

        void unrecognizedIdentifier(const std::string& identifier) {
            evalError("unrecognized identifier:" + identifier);
        }    
        SelectionCompiler compiler;

        const static int scriptLevelMax = 10;
        int scriptLevel;

        Context stack[scriptLevelMax];

        std::string filename;
        std::string script;
        std::vector<int> linenumbers;
        std::vector<int> lineIndices;
        std::vector<std::vector<Token> > aatoken;
        int pc; // program counter

        bool error;
        std::string errorMessage;

        std::vector<Token> statement;
        int statementLength;

        SimInfo* info;
        NameFinder finder;
        int nStuntDouble;   //natoms + nrigidbodies
        std::map<std::string, boost::any > variables;
};

}
#endif
Revision:	1967
Committed:	Thu Feb 3 23:14:05 2005 UTC (19 years, 5 months ago) by tim
File size:	6238 byte(s)
Log Message:	more work in selection library
#	Content
1	/*
2	* Copyright (c) 2005 The University of Notre Dame. All Rights Reserved.
3	*
4	* The University of Notre Dame grants you ("Licensee") a
5	* non-exclusive, royalty free, license to use, modify and
6	* redistribute this software in source and binary code form, provided
7	* that the following conditions are met:
8	*
9	* 1. Acknowledgement of the program authors must be made in any
10	* publication of scientific results based in part on use of the
11	* program. An acceptable form of acknowledgement is citation of
12	* the article in which the program was described (Matthew
13	* A. Meineke, Charles F. Vardeman II, Teng Lin, Christopher
14	* J. Fennell and J. Daniel Gezelter, "OOPSE: An Object-Oriented
15	* Parallel Simulation Engine for Molecular Dynamics,"
16	* J. Comput. Chem. 26, pp. 252-271 (2005))
17	*
18	* 2. Redistributions of source code must retain the above copyright
19	* notice, this list of conditions and the following disclaimer.
20	*
21	* 3. Redistributions in binary form must reproduce the above copyright
22	* notice, this list of conditions and the following disclaimer in the
23	* documentation and/or other materials provided with the
24	* distribution.
25	*
26	* This software is provided "AS IS," without a warranty of any
27	* kind. All express or implied conditions, representations and
28	* warranties, including any implied warranty of merchantability,
29	* fitness for a particular purpose or non-infringement, are hereby
30	* excluded. The University of Notre Dame and its licensors shall not
31	* be liable for any damages suffered by licensee as a result of
32	* using, modifying or distributing the software or its
33	* derivatives. In no event will the University of Notre Dame or its
34	* licensors be liable for any lost revenue, profit or data, or for
35	* direct, indirect, special, consequential, incidental or punitive
36	* damages, however caused and regardless of the theory of liability,
37	* arising out of the use of or inability to use software, even if the
38	* University of Notre Dame has been advised of the possibility of
39	* such damages.
40	*/
41
42	#ifndef SELECTION_SELECTIONEVALUATOR_HPP
43	#define SELECTION_SELECTIONEVALUATOR_HPP
44
45	#include <map>
46	#include <string>
47	#include <vector>
48
49	#include "brains/SimInfo.hpp"
50	#include "selection/Token.hpp"
51	#include "selection/SelectionCompiler.hpp"
52	#include "selection/NameFinder.hpp"
53	#include "utils/BitSet.hpp"
54	#include "primitives/StuntDouble.hpp"
55	namespace oopse {
56
57
58	class Context {
59	public:
60
61	void clear() {
62	linenumbers.clear();
63	lineIndices.clear();
64	aatoken.clear();
65	}
66
67	std::string filename;
68	std::string script;
69	std::vector<int> linenumbers;
70	std::vector<int> lineIndices;
71	std::vector<std::vector<Token> > aatoken;
72	int pc;
73	};
74
75
76	/**
77	* @class SelectionEvaluator SelectionEvaluator.hpp "selection/SelectionEvaluator"
78	* @brief Evalute the tokens compiled by SelectionCompiler and return a BitSet
79	*/
80	class SelectionEvaluator{
81	public:
82
83	SelectionEvaluator(SimInfo* info, const std::string& script);
84
85
86	BitSet evaluate();
87
88	BitSet evaluate(int frameNo);
89
90	/**
91	* Tests if the result from evaluation of script is static.
92	* @return true if the result keeps the same even the frame change, otherwise return false
93	*/
94	bool isStatic();
95
96	bool hadRuntimeError() const{
97	return error;
98	}
99
100	std::string getErrorMessage() const {
101	return errorMessage;
102	}
103
104
105	int getLinenumber() {
106	return linenumbers[pc];
107	}
108
109	std::string getLine() {
110	int ichBegin = lineIndices[pc];
111	int ichEnd;
112	if ((ichEnd = script.find('\r', ichBegin)) == std::string::npos &&
113	(ichEnd = script.find('\n', ichBegin)) == std::string::npos) {
114	ichEnd = script.size();
115	}
116	return script.substr(ichBegin, ichEnd);
117	}
118
119	private:
120
121	void clearState();
122
123	bool loadScript(const std::string& filename, const std::string& script);
124	bool loadScriptString(const std::string& script);
125	bool loadScriptFileInternal(const std::string& filename);
126	bool loadScriptFile(const std::string& filename);
127
128	void clearDefinitionsAndLoadPredefined();
129
130	void define();
131	void select();
132	void predefine(const std::string& script);
133
134	void instructionDispatchLoop();
135
136	void withinInstruction(const Token& instruction, BitSet& bs);
137
138	BitSet comparatorInstruction(const Token& instruction);
139	void compareProperty(StuntDouble* sd, BitSet& bs, int property, int comparator, float comparisonValue);
140	BitSet nameInstruction(const std::string& name);
141
142	BitSet expression(const std::vector<Token>& tokens, int pc);
143
144	BitSet lookupValue(const std::string& variable);
145
146	void evalError(const std::string& message);
147
148	void unrecognizedCommand(const Token& token) {
149	evalError("unrecognized command:" + boost::any_cast<std::string>(token.value));
150	}
151
152	void unrecognizedExpression() {
153	evalError("unrecognized expression");
154	}
155
156	void unrecognizedAtomProperty(int property){
157	evalError("unrecognized atom property");
158	}
159
160	void unrecognizedIdentifier(const std::string& identifier) {
161	evalError("unrecognized identifier:" + identifier);
162	}
163	SelectionCompiler compiler;
164
165	const static int scriptLevelMax = 10;
166	int scriptLevel;
167
168	Context stack[scriptLevelMax];
169
170	std::string filename;
171	std::string script;
172	std::vector<int> linenumbers;
173	std::vector<int> lineIndices;
174	std::vector<std::vector<Token> > aatoken;
175	int pc; // program counter
176
177	bool error;
178	std::string errorMessage;
179
180	std::vector<Token> statement;
181	int statementLength;
182
183	SimInfo* info;
184	NameFinder finder;
185	int nStuntDouble; //natoms + nrigidbodies
186	std::map<std::string, boost::any > variables;
187	};
188
189	}
190	#endif