74 lines
2.8 KiB
JavaScript
74 lines
2.8 KiB
JavaScript
/*
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* Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* - Neither the name of Oracle nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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// Flexible script object using AbstractJSObject subclass
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var AbstractJSObject = Java.type("jdk.nashorn.api.scripting.AbstractJSObject");
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// JSObject example that uses a map for properties and
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// falls back to with methods on a java object (for missing
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// properties
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function makeJSObj(map, fallback) {
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return new AbstractJSObject() {
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getMember: function(name) {
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if (map.containsKey(name)) {
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return map.get(name);
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}
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var val = fallback[name];
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if (typeof val == 'function') {
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return function() {
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var a = arguments;
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switch (a.length) {
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case 0: return fallback[name]();
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case 1: return fallback[name](a[0]);
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case 2: return fallback[name](a[0], a[1]);
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case 3: return fallback[name](a[0], a[1], a[2]);
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case 4: return fallback[name](a[0], a[1], a[2], a[3]);
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}
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}
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}
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}
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}
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}
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var m = new java.util.HashMap();
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m.put("foo", 42);
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m.put("bar", 'hello');
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var obj = makeJSObj(m, new java.io.File("."));
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print(obj.foo);
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print(obj.bar);
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print(obj.getAbsolutePath());
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print(obj.isDirectory());
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