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annotate graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/SLScript.java @ 13620:fa56f5a49270

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improved format checking and error reporting when parsing a projects file
author Doug Simon <doug.simon@oracle.com>
date Mon, 13 Jan 2014 21:40:47 +0100
parents 69d2e4baa215
children 3f27e57439ed
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Copyright (c) 2012, 2013, 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;
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24
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25 import javax.script.*;
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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.parser.*;
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29 import com.oracle.truffle.sl.runtime.*;
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30
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31 public final class SLScript {
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32
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33 private final SLContext context;
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34 private final CallTarget main;
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35
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36 private SLScript(SLContext context, CallTarget mainFunction) {
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37 this.context = context;
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38 this.main = mainFunction;
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39 }
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41 public SLContext getContext() {
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42 return context;
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43 }
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44
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45 public CallTarget getMain() {
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46 return main;
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47 }
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48
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49 public Object run(Object... arguments) {
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50 return main.call(null, new SLArguments(arguments));
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51 }
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52
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53 @Override
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54 public String toString() {
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55 return main.toString();
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56 }
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57
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58 public static SLScript create(SLContext context, Source source) throws ScriptException {
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59 SLNodeFactory factory = new SLNodeFactory(context);
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60 Parser parser = new Parser(new Scanner(source.getInputStream()), factory);
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61 factory.setParser(parser);
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62 factory.setSource(source);
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63 String error = parser.ParseErrors();
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64 if (!error.isEmpty()) {
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65 throw new ScriptException(String.format("Error(s) parsing script: %s", error));
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66 }
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67
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68 CallTarget main = context.getFunctionRegistry().lookup("main");
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69 if (main == null) {
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70 throw new ScriptException("No main function found.");
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71 }
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72 return new SLScript(context, main);
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73 }
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74 }