Mercurial > hg > graal-compiler
annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/SyntaxTag.java @ 20131:4b12d5355811
Truffle: do not use iterators for visitors.
author | Christian Humer <christian.humer@gmail.com> |
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date | Thu, 02 Apr 2015 01:27:27 +0200 |
parents | 27fe86a6fb49 |
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1 /* |
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2 * Copyright (c) 2014, 2015, 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. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 package com.oracle.truffle.api.instrument; |
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26 |
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27 /** |
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28 * Program element "tags", presumed to be singletons (best implemented as enums) that define |
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29 * user-visible behavior for debugging and other simple tools. These categories should correspond to |
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30 * program structures, for example "statement" and "assignment", that are meaningful |
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31 * ("human-sensible") to guest language programmers. |
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32 * <p> |
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33 * An untagged Truffle node should be understood as an artifact of the guest language implementation |
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34 * and should not be visible to guest language programmers. Nodes may also have more than one tag, |
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35 * for example a variable assignment that is also a statement. Finally, the assignment of tags to |
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36 * nodes could depending on the use-case of whatever tool is using them. |
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37 * |
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38 * @see Probe |
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39 * @see StandardSyntaxTag |
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40 */ |
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41 public interface SyntaxTag { |
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42 |
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43 /** |
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44 * Human-friendly name of guest language program elements belonging to the category, e.g. |
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45 * "statement". |
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46 */ |
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47 String name(); |
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48 |
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49 /** |
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50 * Criteria and example uses for the tag. |
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51 */ |
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52 String getDescription(); |
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53 |
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54 } |