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annotate truffle/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/expression/SLParenExpressionNode.java @ 21951:9c8c0937da41

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Moving all sources into truffle subdirectory
author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Wed, 17 Jun 2015 10:58:08 +0200
parents graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/expression/SLParenExpressionNode.java@c0455554d45b
children c07e64ecb528
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0fc43b066eee SL/SourceAttribution: correct some omissions, and in particular add new node SLParenExpressionNode to represent a parenthesized expression; this is semantically neutral of course, but needed to account correctly for the text of such an expression (as opposed to its contents).
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1 /*
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2 * Copyright (c) 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
0fc43b066eee SL/SourceAttribution: correct some omissions, and in particular add new node SLParenExpressionNode to represent a parenthesized expression; this is semantically neutral of course, but needed to account correctly for the text of such an expression (as opposed to its contents).
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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.expression;
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24
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25 import com.oracle.truffle.api.frame.*;
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26 import com.oracle.truffle.api.nodes.*;
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27 import com.oracle.truffle.api.source.*;
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28 import com.oracle.truffle.sl.nodes.*;
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29
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30 /**
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31 * A {@link SLExpressionNode} that represents a parenthesized expression; it simply returns the
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32 * value of the enclosed (child) expression. It is represented separately in the AST for the purpose
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33 * of correct source attribution; this preserves the lexical relationship between the two
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34 * parentheses and allows a tool to describe the expression as distinct from its contents.
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35 */
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36 @NodeInfo(description = "A parenthesized expression")
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37 public class SLParenExpressionNode extends SLExpressionNode {
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38
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39 private final SLExpressionNode expression;
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40
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41 public SLParenExpressionNode(SourceSection src, SLExpressionNode expression) {
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42 super(src);
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43 this.expression = insert(expression);
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44 }
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45
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46 @Override
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47 public Object executeGeneric(VirtualFrame frame) {
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48 return expression.executeGeneric(frame);
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49 }
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50
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51 @Override
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52 public long executeLong(VirtualFrame frame) throws UnexpectedResultException {
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53 return expression.executeLong(frame);
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54 }
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55
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56 @Override
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57 public boolean executeBoolean(VirtualFrame frame) throws UnexpectedResultException {
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58 return expression.executeBoolean(frame);
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59 }
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60
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61 }