1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/emul/src/main/java/org/apidesign/bck2brwsr/emul/MethodImpl.java	Fri Dec 28 08:48:08 2012 +0100
     1.3 @@ -0,0 +1,97 @@
     1.4 +/*
     1.5 + * Copyright (c) 1996, 2006, Oracle and/or its affiliates. All rights reserved.
     1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     1.7 + *
     1.8 + * This code is free software; you can redistribute it and/or modify it
     1.9 + * under the terms of the GNU General Public License version 2 only, as
    1.10 + * published by the Free Software Foundation.  Oracle designates this
    1.11 + * particular file as subject to the "Classpath" exception as provided
    1.12 + * by Oracle in the LICENSE file that accompanied this code.
    1.13 + *
    1.14 + * This code is distributed in the hope that it will be useful, but WITHOUT
    1.15 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    1.16 + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    1.17 + * version 2 for more details (a copy is included in the LICENSE file that
    1.18 + * accompanied this code).
    1.19 + *
    1.20 + * You should have received a copy of the GNU General Public License version
    1.21 + * 2 along with this work; if not, write to the Free Software Foundation,
    1.22 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
    1.23 + *
    1.24 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
    1.25 + * or visit www.oracle.com if you need additional information or have any
    1.26 + * questions.
    1.27 + */
    1.28 +package org.apidesign.bck2brwsr.emul;
    1.29 +
    1.30 +import java.lang.reflect.Method;
    1.31 +import org.apidesign.bck2brwsr.core.JavaScriptBody;
    1.32 +
    1.33 +/** Utilities to work on methods.
    1.34 + *
    1.35 + * @author Jaroslav Tulach <jtulach@netbeans.org>
    1.36 + */
    1.37 +public abstract class MethodImpl {
    1.38 +    public static MethodImpl INSTANCE;
    1.39 +    static {
    1.40 +        try {
    1.41 +            Class.forName(Method.class.getName());
    1.42 +        } catch (ClassNotFoundException ex) {
    1.43 +            throw new IllegalStateException(ex);
    1.44 +        }
    1.45 +    }
    1.46 +    
    1.47 +    protected abstract Method create(Class<?> declaringClass, String name, Object data, String sig);
    1.48 +    
    1.49 +    
    1.50 +    //
    1.51 +    // bck2brwsr implementation
    1.52 +    //
    1.53 +
    1.54 +    @JavaScriptBody(args = {"clazz", "prefix"},
    1.55 +        body = ""
    1.56 +        + "var c = clazz.cnstr.prototype;"
    1.57 +        + "var arr = new Array();\n"
    1.58 +        + "for (m in c) {\n"
    1.59 +        + "  if (m.indexOf(prefix) === 0) {\n"
    1.60 +        + "     arr.push(m);\n"
    1.61 +        + "     arr.push(c[m]);\n"
    1.62 +        + "  }"
    1.63 +        + "}\n"
    1.64 +        + "return arr;")
    1.65 +    private static native Object[] findMethodData(
    1.66 +        Class<?> clazz, String prefix);
    1.67 +
    1.68 +    // XXX should not be public
    1.69 +    public static Method findMethod(
    1.70 +        Class<?> clazz, String name, Class<?>... parameterTypes) {
    1.71 +        Object[] data = findMethodData(clazz, name + "__");
    1.72 +        if (data.length == 0) {
    1.73 +            return null;
    1.74 +        }
    1.75 +        String sig = ((String) data[0]).substring(name.length() + 2);
    1.76 +        return INSTANCE.create(clazz, name, data[1], sig);
    1.77 +    }
    1.78 +
    1.79 +    public static Method[] findMethods(Class<?> clazz) {
    1.80 +        Object[] namesAndData = findMethodData(clazz, "");
    1.81 +        int cnt = 0;
    1.82 +        for (int i = 0; i < namesAndData.length; i += 2) {
    1.83 +            String sig = (String) namesAndData[i];
    1.84 +            Object data = namesAndData[i + 1];
    1.85 +            int middle = sig.indexOf("__");
    1.86 +            if (middle == -1) {
    1.87 +                continue;
    1.88 +            }
    1.89 +            String name = sig.substring(0, middle);
    1.90 +            sig = sig.substring(middle + 2);
    1.91 +            namesAndData[cnt++] = INSTANCE.create(clazz, name, data, sig);
    1.92 +        }
    1.93 +        Method[] arr = new Method[cnt];
    1.94 +        for (int i = 0; i < cnt; i++) {
    1.95 +            arr[i] = (Method) namesAndData[i];
    1.96 +        }
    1.97 +        return arr;
    1.98 +    }
    1.99 +    
   1.100 +}