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3
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1 /*
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2 FASTX-toolkit - FASTA/FASTQ preprocessing tools.
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3 Copyright (C) 2009 A. Gordon (gordon@cshl.edu)
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4
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5 This program is free software: you can redistribute it and/or modify
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6 it under the terms of the GNU Affero General Public License as
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7 published by the Free Software Foundation, either version 3 of the
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8 License, or (at your option) any later version.
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9
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10 This program is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 GNU Affero General Public License for more details.
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14
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15 You should have received a copy of the GNU Affero General Public License
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16 along with this program. If not, see <http://www.gnu.org/licenses/>.
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17 */
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18 #ifndef __STD_HASH__
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19 #define __STD_HASH__
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20
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21
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22 /*
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23 * Centralized place to load std::hash_map
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24 *
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25 * GCC needs the following hacks...
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26 * Other compilers/systems might require different hacks
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27 */
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28
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29 #include <ext/hash_map>
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30 #include <ext/hash_set>
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31
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32 namespace std
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33 {
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34 using namespace __gnu_cxx;
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35
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36 struct std_string_hash
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37 {
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38 size_t operator()( const std::string& x ) const
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39 {
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40 //printf("std_string_hash: hashing '%s'\n", x.c_str());
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41 return hash< const char* >()( x.c_str() );
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42 }
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43 };
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44
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45 /*
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46 * 'eqstr' and 'hash_map' usage is based on http://www.sgi.com/tech/stl/hash_map.html
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47 */
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48 struct eqstr
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49 {
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50 bool operator()(const char* s1, const char* s2) const
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51 {
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52 return strcmp(s1, s2) == 0;
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53 }
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54 };
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55
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56 typedef hash_map< const char*, int, hash< const char* >, eqstr > hash_map_charptr_to_int;
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57
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58 typedef hash_map< string, int, std_string_hash > hash_map_string_to_int;
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59
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60 typedef hash_set < string, std_string_hash > hash_set_string ;
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61 }
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62
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63 #endif
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64
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