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1 /* |
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2 * Copyright 1999-2005 Sun Microsystems, Inc. All Rights Reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
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20 * CA 95054 USA or visit www.sun.com if you need additional information or |
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21 * have any questions. |
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22 * |
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23 */ |
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24 |
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25 // ciExceptionHandler |
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26 // |
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27 // This class represents an exception handler for a method. |
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28 class ciExceptionHandler : public ResourceObj { |
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29 private: |
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30 friend class ciMethod; |
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31 |
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32 // The loader to be used for resolving the exception |
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33 // klass. |
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34 ciInstanceKlass* _loading_klass; |
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35 |
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36 // Handler data. |
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37 int _start; |
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38 int _limit; |
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39 int _handler_bci; |
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40 int _catch_klass_index; |
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41 |
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42 // The exception klass that this handler catches. |
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43 ciInstanceKlass* _catch_klass; |
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44 |
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45 public: |
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46 ciExceptionHandler(ciInstanceKlass* loading_klass, |
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47 int start, int limit, |
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48 int handler_bci, int klass_index) { |
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49 _loading_klass = loading_klass; |
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50 _start = start; |
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51 _limit = limit; |
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52 _handler_bci = handler_bci; |
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53 _catch_klass_index = klass_index; |
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54 _catch_klass = NULL; |
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55 } |
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56 |
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57 int start() { return _start; } |
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58 int limit() { return _limit; } |
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59 int handler_bci() { return _handler_bci; } |
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60 int catch_klass_index() { return _catch_klass_index; } |
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61 |
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62 // Get the exception klass that this handler catches. |
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63 ciInstanceKlass* catch_klass(); |
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64 |
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65 bool is_catch_all() { return catch_klass_index() == 0; } |
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66 bool is_in_range(int bci) { |
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67 return start() <= bci && bci < limit(); |
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68 } |
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69 bool catches(ciInstanceKlass *exc) { |
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70 return is_catch_all() || exc->is_subtype_of(catch_klass()); |
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71 } |
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72 bool is_rethrow() { return handler_bci() == -1; } |
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73 |
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74 void print(); |
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75 }; |