1 /* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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3 * The contents of this file are subject to the Netscape Public
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4 * License Version 1.1 (the "License"); you may not use this file
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5 * except in compliance with the License. You may obtain a copy of
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6 * the License at http://www.mozilla.org/NPL/
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8 * Software distributed under the License is distributed on an "AS
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9 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express oqr
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10 * implied. See the License for the specific language governing
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11 * rights and limitations under the License.
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13 * The Original Code is Rhino code, released
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16 * The Initial Developer of the Original Code is Netscape
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17 * Communications Corporation. Portions created by Netscape are
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18 * Copyright (C) 1997-1999 Netscape Communications Corporation. All
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24 * Alternatively, the contents of this file may be used under the
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25 * terms of the GNU Public License (the "GPL"), in which case the
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26 * provisions of the GPL are applicable instead of those above.
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27 * If you wish to allow use of your version of this file only
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28 * under the terms of the GPL and not to allow others to use your
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29 * version of this file under the NPL, indicate your decision by
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30 * deleting the provisions above and replace them with the notice
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31 * and other provisions required by the GPL. If you do not delete
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32 * the provisions above, a recipient may use your version of this
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33 * file under either the NPL or the GPL.
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38 package org.mozilla.javascript;
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41 * This is interface that all functions in JavaScript must implement.
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42 * The interface provides for calling functions and constructors.
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44 * @see org.mozilla.javascript.Scriptable
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45 * @author Norris Boyd
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48 public interface Function extends Scriptable {
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50 * Call the function.
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52 * Note that the array of arguments is not guaranteed to have
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53 * length greater than 0.
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55 * @param cx the current Context for this thread
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56 * @param scope the scope to execute the function relative to. This is
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57 * set to the value returned by getParentScope() except
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58 * when the function is called from a closure.
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59 * @param thisObj the JavaScript <code>this</code> object
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60 * @param args the array of arguments
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61 * @return the result of the call
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62 * @exception JavaScriptException if an uncaught exception
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63 * occurred while executing the function
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65 public Object call(Context cx, Scriptable scope, Scriptable thisObj,
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67 throws JavaScriptException;
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70 * Call the function as a constructor.
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72 * This method is invoked by the runtime in order to satisfy a use
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73 * of the JavaScript <code>new</code> operator. This method is
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74 * expected to create a new object and return it.
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76 * @param cx the current Context for this thread
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77 * @param scope an enclosing scope of the caller except
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78 * when the function is called from a closure.
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79 * @param args the array of arguments
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80 * @return the allocated object
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81 * @exception JavaScriptException if an uncaught exception
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82 * occurred while executing the constructor
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84 public Scriptable construct(Context cx, Scriptable scope, Object[] args)
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85 throws JavaScriptException;
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