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annotate graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/runtime/SLFunctionRegistry.java @ 13821:b16ec83edc73

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Documentation and more refactoring of Simple Language
author Christian Wimmer <christian.wimmer@oracle.com>
date Wed, 29 Jan 2014 20:45:43 -0800
parents 7c418666c6c9
children
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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.runtime;
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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.oracle.truffle.api.*;
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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 * Manages the mapping from function names to {@link SLFunction function objects}.
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32 */
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33 public final class SLFunctionRegistry {
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34
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35 private final Map<String, SLFunction> functions = new HashMap<>();
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36
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37 /**
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38 * Returns the canonical {@link SLFunction} object for the given name. If it does not exist yet,
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39 * it is created.
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40 */
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41 public SLFunction lookup(String name) {
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42 SLFunction result = functions.get(name);
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43 if (result == null) {
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44 result = new SLFunction(name);
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45 functions.put(name, result);
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46 }
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47 return result;
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48 }
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49
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50 /**
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51 * Associates the {@link SLFunction} with the given name with the given implementation root
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52 * node. If the function did not exist before, it defines the function. If the function existed
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53 * before, it redefines the function and the old implementation is discarded.
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54 */
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55 public void register(String name, SLRootNode rootNode) {
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56 SLFunction function = lookup(name);
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57 RootCallTarget callTarget = Truffle.getRuntime().createCallTarget(rootNode);
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58 function.setCallTarget(callTarget);
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59 }
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60
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61 /**
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62 * Returns the sorted list of all functions, for printing purposes only.
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63 */
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64 public List<SLFunction> getFunctions() {
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65 List<SLFunction> result = new ArrayList<>(functions.values());
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66 Collections.sort(result, new Comparator<SLFunction>() {
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67 public int compare(SLFunction f1, SLFunction f2) {
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68 return f1.toString().compareTo(f2.toString());
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69 }
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70 });
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71 return result;
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72 }
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73 }