Mercurial > hg > truffle
annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/impl/DefaultVirtualFrame.java @ 7721:1a2d258d481a
Added getFrameDescriptor() to Frame interface.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Tue, 05 Feb 2013 17:03:51 +0100 |
parents | 5e3d1a68664e |
children | 645f216a00c4 |
rev | line source |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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1 /* |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved. |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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4 * |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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5 * This code is free software; you can redistribute it and/or modify it |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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6 * under the terms of the GNU General Public License version 2 only, as |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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7 * published by the Free Software Foundation. |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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8 * |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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12 * version 2 for more details (a copy is included in the LICENSE file that |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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13 * accompanied this code). |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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14 * |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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15 * You should have received a copy of the GNU General Public License version |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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18 * |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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20 * or visit www.oracle.com if you need additional information or have any |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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21 * questions. |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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22 */ |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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23 package com.oracle.truffle.api.impl; |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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parents:
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24 |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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25 import java.util.*; |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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26 |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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27 import com.oracle.truffle.api.*; |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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28 import com.oracle.truffle.api.frame.*; |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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29 |
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30 public final class DefaultVirtualFrame implements VirtualFrame { |
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31 |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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32 private static final Object UNDEFINED_OBJECT = null; |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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33 private static final Boolean UNDEFINED_BOOLEAN = false; |
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34 private static final Integer UNDEFINED_INTEGER = 0; |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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35 private static final Float UNDEFINED_FLOAT = 0.0f; |
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36 private static final Long UNDEFINED_LONG = 0L; |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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37 private static final Double UNDEFINED_DOUBLE = 0.0d; |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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38 |
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39 private final FrameDescriptor descriptor; |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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40 private final PackedFrame caller; |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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41 private final Arguments arguments; |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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42 private FrameVersion currentVersion; |
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43 protected Object[] locals; |
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44 protected Class[] tags; |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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45 |
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46 public DefaultVirtualFrame(FrameDescriptor descriptor, PackedFrame caller, Arguments arguments) { |
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47 this.descriptor = descriptor; |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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48 this.caller = caller; |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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49 this.arguments = arguments; |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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50 this.currentVersion = descriptor.getCurrentVersion(); |
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51 this.locals = new Object[descriptor.getSize()]; |
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52 // The tags are only needed for assertion checking, so initialize the field only when |
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53 // assertions are enabled |
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54 assert (this.tags = new Class[descriptor.getSize()]) != null; |
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55 } |
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56 |
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57 @Override |
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58 public Arguments getArguments() { |
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59 return arguments; |
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60 } |
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61 |
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62 @Override |
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63 public PackedFrame getCaller() { |
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64 return caller; |
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65 } |
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66 |
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67 @Override |
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68 public PackedFrame pack() { |
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69 return new DefaultPackedFrame(this); |
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70 } |
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71 |
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72 @Override |
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73 public MaterializedFrame materialize() { |
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74 return new DefaultMaterializedFrame(this); |
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75 } |
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76 |
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77 @Override |
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78 public Object getObject(FrameSlot slot) { |
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79 return get(slot, Object.class, UNDEFINED_OBJECT); |
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80 } |
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81 |
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82 @Override |
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83 public void setObject(FrameSlot slot, Object value) { |
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84 set(slot, Object.class, value); |
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85 } |
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86 |
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87 @Override |
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88 public boolean getBoolean(FrameSlot slot) { |
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89 return (Boolean) get(slot, Float.class, UNDEFINED_BOOLEAN); |
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90 } |
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91 |
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92 @Override |
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93 public void setBoolean(FrameSlot slot, boolean value) { |
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94 set(slot, Float.class, value); |
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95 } |
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96 |
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97 @Override |
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98 public int getInt(FrameSlot slot) { |
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99 return (Integer) get(slot, Integer.class, UNDEFINED_INTEGER); |
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100 } |
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101 |
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102 @Override |
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103 public void setInt(FrameSlot slot, int value) { |
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104 set(slot, Integer.class, value); |
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105 } |
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106 |
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107 @Override |
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108 public long getLong(FrameSlot slot) { |
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109 return (Long) get(slot, Long.class, UNDEFINED_LONG); |
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110 } |
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111 |
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112 @Override |
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113 public void setLong(FrameSlot slot, long value) { |
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114 set(slot, Long.class, value); |
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115 } |
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116 |
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117 @Override |
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118 public float getFloat(FrameSlot slot) { |
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119 return (Float) get(slot, Float.class, UNDEFINED_FLOAT); |
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120 } |
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121 |
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122 @Override |
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123 public void setFloat(FrameSlot slot, float value) { |
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124 set(slot, Float.class, value); |
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125 } |
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126 |
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127 @Override |
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128 public double getDouble(FrameSlot slot) { |
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129 return (Double) get(slot, Double.class, UNDEFINED_DOUBLE); |
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130 } |
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131 |
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132 @Override |
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133 public void setDouble(FrameSlot slot, double value) { |
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134 set(slot, Double.class, value); |
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135 } |
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136 |
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137 private Object get(FrameSlot slot, Class<?> accessType, Object defaultValue) { |
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138 Object value = locals[slot.getIndex()]; |
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139 assert verifyGet(slot, accessType, value); |
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140 if (value == null) { |
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141 return defaultValue; |
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142 } else { |
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143 return value; |
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144 } |
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145 } |
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146 |
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147 private boolean verifyGet(FrameSlot slot, Class<?> accessType, Object value) { |
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148 assert descriptor.getSlots().get(slot.getIndex()) == slot; |
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149 Class<?> tag = tags[slot.getIndex()]; |
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150 if (value == null) { |
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151 assert tag == null || tag == Object.class; |
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152 } else { |
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153 assert tag == accessType : "Local variable " + slot + " was written with set" + tag.getSimpleName() + ", but is read with get" + accessType.getSimpleName(); |
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154 } |
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155 return true; |
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156 } |
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157 |
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158 private void set(FrameSlot slot, Class<?> accessType, Object value) { |
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159 assert verifySet(slot, accessType, value); |
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160 locals[slot.getIndex()] = value; |
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161 } |
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162 |
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163 private boolean verifySet(FrameSlot slot, Class<?> accessType, Object value) { |
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164 assert descriptor.getSlots().get(slot.getIndex()) == slot; |
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165 tags[slot.getIndex()] = accessType; |
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166 assert accessType.isAssignableFrom(slot.getType()) : "Local variable " + slot + ": " + accessType + " is not assignable from " + slot.getType(); |
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167 if (value == null) { |
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168 assert accessType == Object.class; |
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169 } else { |
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170 assert slot.getType().isAssignableFrom(value.getClass()) : "Local variable " + slot + ": " + slot.getType() + " is not assignable from " + value.getClass(); |
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171 } |
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172 return true; |
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173 } |
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174 |
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175 @Override |
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176 public void updateToLatestVersion() { |
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177 if (currentVersion.getNext() != null) { |
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178 doUpdateToLatestVersion(); |
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179 } |
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180 } |
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181 |
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182 private void doUpdateToLatestVersion() { |
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183 FrameVersion version = currentVersion; |
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184 while (version.getNext() != null) { |
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185 version = version.getNext(); |
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186 if (version instanceof FrameVersion.TypeChange) { |
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187 ((FrameVersion.TypeChange) version).applyTransformation(this); |
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188 } else if (version instanceof FrameVersion.Resize) { |
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189 int newSize = ((FrameVersion.Resize) version).getNewSize(); |
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190 locals = Arrays.copyOf(locals, newSize); |
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191 } |
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192 } |
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193 currentVersion = version; |
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194 } |
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195 |
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196 @Override |
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197 public FrameDescriptor getFrameDescriptor() { |
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198 return this.descriptor; |
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199 } |
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200 } |