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annotate graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/instrument/SLExpressionWrapper.java @ 16913:b879421229db

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SL: better toString for SL nodes.
author Christian Humer <christian.humer@gmail.com>
date Sat, 23 Aug 2014 19:31:33 +0200
parents 7661cc464239
children a1427e40deaf
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 /*
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2 * Copyright (c) 2012, 2014, 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.oracle.truffle.sl.nodes.instrument;
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24
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25 import java.math.*;
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26
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27 import com.oracle.truffle.api.CompilerDirectives.*;
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28 import com.oracle.truffle.api.frame.*;
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29 import com.oracle.truffle.api.instrument.*;
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30 import com.oracle.truffle.api.nodes.*;
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31 import com.oracle.truffle.sl.nodes.*;
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32 import com.oracle.truffle.sl.runtime.*;
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33
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34 /**
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35 * SLExpressionWrapper is a Truffle AST node that gets inserted as the parent to the node that it is
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36 * wrapping. Any debugging instruments are attached to this wrapper through {@link Probe}s (which
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37 * themselves contain the instruments. It is through this mechanism that tools can interact directly
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38 * with the AST. <br/>
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39 * {@link SLExpressionWrapper} specifically wraps {@link SLExpressionNode}s and overrides the
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40 * various execute functions in {@link SLExpressionNode} to operate on the child of the wrapper
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41 * instead of the wrapper itself.
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42 *
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43 */
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44 public final class SLExpressionWrapper extends SLExpressionNode implements Wrapper {
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45 @Child private SLExpressionNode child;
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46
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47 private final Probe probe;
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48
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49 /**
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50 * Constructor.
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51 *
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52 * @param context The current Simple execution context
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53 * @param child The {@link SLExpressionNode} that this wrapper is wrapping
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54 */
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55 public SLExpressionWrapper(SLContext context, SLExpressionNode child) {
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56 super(child.getSourceSection());
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57 assert !(child instanceof SLExpressionWrapper);
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58 this.probe = context.createProbe(child.getSourceSection());
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59 this.child = child;
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60 // The child should only be inserted after a replace, so we defer inserting the child to the
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61 // creator of the wrapper.
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62 }
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63
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64 @Override
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65 public SLExpressionNode getNonWrapperNode() {
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66 return child;
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67 }
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68
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69 @Override
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70 public Node getChild() {
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71 return child;
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72 }
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73
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74 @Override
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75 public Probe getProbe() {
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76 return probe;
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77 }
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78
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79 @Override
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80 @SlowPath
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81 public boolean isTaggedAs(SyntaxTag tag) {
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82 return probe.isTaggedAs(tag);
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83 }
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84
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85 @Override
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86 @SlowPath
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87 public Iterable<SyntaxTag> getSyntaxTags() {
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88 return probe.getSyntaxTags();
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89 }
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90
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91 @SlowPath
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92 public void tagAs(SyntaxTag tag) {
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93 probe.tagAs(tag);
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94 }
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95
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96 @Override
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97 public Object executeGeneric(VirtualFrame frame) {
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98 this.tagAs(StandardSyntaxTag.STATEMENT);
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99 probe.enter(child, frame);
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100 Object result;
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101
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102 try {
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103 result = child.executeGeneric(frame);
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104 probe.leave(child, frame, result);
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105 } catch (Exception e) {
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106 probe.leaveExceptional(child, frame, e);
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107 throw (e);
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108 }
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109 return result;
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110 }
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111
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112 @Override
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113 public long executeLong(VirtualFrame frame) throws UnexpectedResultException {
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114 this.tagAs(StandardSyntaxTag.STATEMENT);
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115 return SLTypesGen.SLTYPES.expectLong(executeGeneric(frame));
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116 }
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117
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118 @Override
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119 public BigInteger executeBigInteger(VirtualFrame frame) throws UnexpectedResultException {
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120 this.tagAs(StandardSyntaxTag.STATEMENT);
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121 return SLTypesGen.SLTYPES.expectBigInteger(executeGeneric(frame));
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122 }
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123
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124 @Override
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125 public boolean executeBoolean(VirtualFrame frame) throws UnexpectedResultException {
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126 this.tagAs(StandardSyntaxTag.STATEMENT);
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127 return SLTypesGen.SLTYPES.expectBoolean(executeGeneric(frame));
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128 }
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129
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130 @Override
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131 public String executeString(VirtualFrame frame) throws UnexpectedResultException {
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132 this.tagAs(StandardSyntaxTag.STATEMENT);
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133 return SLTypesGen.SLTYPES.expectString(executeGeneric(frame));
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134 }
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135
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136 @Override
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137 public SLFunction executeFunction(VirtualFrame frame) throws UnexpectedResultException {
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138 this.tagAs(StandardSyntaxTag.STATEMENT);
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139 probe.enter(child, frame);
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140 SLFunction result;
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141
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142 try {
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143 result = child.executeFunction(frame);
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144 probe.leave(child, frame, result);
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145 } catch (Exception e) {
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146 probe.leaveExceptional(child, frame, e);
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147 throw (e);
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148 }
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149 return result;
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150 }
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151
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152 @Override
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153 public SLNull executeNull(VirtualFrame frame) throws UnexpectedResultException {
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154 return SLTypesGen.SLTYPES.expectSLNull(executeGeneric(frame));
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155 }
16880
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156
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157 /**
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158 * Sets the parent pointer of this wrapper's child.
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159 */
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160 public void insertChild() {
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161 insert(this.child);
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162 }
16595
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163 }