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1692
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1 /*
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2 * Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved.
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3 * Copyright 2009 Red Hat, Inc.
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4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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5 *
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6 * This code is free software; you can redistribute it and/or modify it
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7 * under the terms of the GNU General Public License version 2 only, as
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8 * published by the Free Software Foundation.
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9 *
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10 * This code is distributed in the hope that it will be useful, but WITHOUT
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11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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13 * version 2 for more details (a copy is included in the LICENSE file that
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14 * accompanied this code).
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15 *
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16 * You should have received a copy of the GNU General Public License version
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17 * 2 along with this work; if not, write to the Free Software Foundation,
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18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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19 *
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20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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21 * or visit www.oracle.com if you need additional information or have any
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22 * questions.
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23 *
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24 */
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25
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26 class SharkConstant : public ResourceObj {
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27 public:
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28 static SharkConstant* for_ldc(ciBytecodeStream* iter);
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29 static SharkConstant* for_field(ciBytecodeStream* iter);
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30
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31 private:
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32 SharkConstant(ciConstant constant, ciType* type);
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33
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34 private:
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35 SharkValue* _value;
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36 ciObject* _object;
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37 ciType* _type;
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38 bool _is_loaded;
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39 bool _is_nonzero;
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40 bool _is_two_word;
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41
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42 public:
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43 bool is_loaded() const {
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44 return _is_loaded;
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45 }
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46 bool is_nonzero() const {
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47 assert(is_loaded(), "should be");
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48 return _is_nonzero;
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49 }
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50 bool is_two_word() const {
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51 assert(is_loaded(), "should be");
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52 return _is_two_word;
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53 }
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54
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55 public:
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56 SharkValue* value(SharkBuilder* builder) {
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57 assert(is_loaded(), "should be");
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58 if (_value == NULL) {
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59 _value = SharkValue::create_generic(
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60 _type, builder->CreateInlineOop(_object), _is_nonzero);
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61 }
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62 return _value;
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63 }
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64 };
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