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annotate graal/com.oracle.max.base/src/com/sun/max/util/ListSymbolizer.java @ 4231:d713eaf4d288
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author | Christian Wimmer <Christian.Wimmer@Oracle.com> |
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date | Thu, 05 Jan 2012 16:09:47 -0800 |
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1 /* |
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2 * Copyright (c) 2007, 2011, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 */ |
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23 package com.sun.max.util; |
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24 |
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25 import java.util.*; |
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26 |
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27 import com.sun.max.program.*; |
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28 |
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29 /** |
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30 */ |
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31 final class ListSymbolizer<S extends Symbol> implements Symbolizer<S> { |
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32 |
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33 private final Class<S> symbolType; |
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34 private final List<S> symbols; |
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35 |
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36 ListSymbolizer(Class<S> symbolType, List<S> symbols) { |
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37 if (symbolType.getName().startsWith("com.sun.max.asm") && Symbolizer.Static.hasPackageExternalAccessibleConstructors(symbolType)) { |
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38 // This test ensures that values passed for symbolic parameters of methods in the |
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39 // generated assemblers are guaranteed to be legal (assuming client code does not |
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40 // inject its own classes into the package where the symbol classes are defined). |
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41 throw ProgramError.unexpected("type of assembler symbol can have values constructed outside of defining package: " + symbolType); |
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42 } |
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43 this.symbolType = symbolType; |
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44 this.symbols = symbols; |
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45 ProgramError.check(!symbols.isEmpty()); |
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46 } |
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47 |
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48 public Class<S> type() { |
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49 return symbolType; |
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50 } |
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51 |
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52 public int numberOfValues() { |
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53 return symbols.size(); |
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54 } |
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55 |
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56 public S fromValue(int value) { |
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57 for (S symbol : symbols) { |
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58 if (symbol.value() == value) { |
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59 return symbol; |
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60 } |
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61 } |
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62 return null; |
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63 } |
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64 |
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65 public Iterator<S> iterator() { |
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66 return symbols.iterator(); |
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67 } |
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68 } |