Merge branch 'master' into plugin-framework

1 files changed, 345 insertions, 0 deletions

diff --git a/infrastructure/rhino1_7R1/examples/Shell.java b/infrastructure/rhino1_7R1/examples/Shell.java
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+++ b/infrastructure/rhino1_7R1/examples/Shell.java
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+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1998.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+import org.mozilla.javascript.*;
+import java.io.*;
+
+/**
+ * The shell program.
+ *
+ * Can execute scripts interactively or in batch mode at the command line.
+ * An example of controlling the JavaScript engine.
+ *
+ * @author Norris Boyd
+ */
+public class Shell extends ScriptableObject
+{
+    public String getClassName()
+    {
+        return "global";
+    }
+
+    /**
+     * Main entry point.
+     *
+     * Process arguments as would a normal Java program. Also
+     * create a new Context and associate it with the current thread.
+     * Then set up the execution environment and begin to
+     * execute scripts.
+     */
+    public static void main(String args[]) {
+        // Associate a new Context with this thread
+        Context cx = Context.enter();
+        try {
+            // Initialize the standard objects (Object, Function, etc.)
+            // This must be done before scripts can be executed.
+            Shell shell = new Shell();
+            cx.initStandardObjects(shell);
+
+            // Define some global functions particular to the shell. Note
+            // that these functions are not part of ECMA.
+            String[] names = { "print", "quit", "version", "load", "help" };
+            shell.defineFunctionProperties(names, Shell.class,
+                                           ScriptableObject.DONTENUM);
+
+            args = processOptions(cx, args);
+
+            // Set up "arguments" in the global scope to contain the command
+            // line arguments after the name of the script to execute
+            Object[] array;
+            if (args.length == 0) {
+                array = new Object[0];
+            } else {
+                int length = args.length - 1;
+                array = new Object[length];
+                System.arraycopy(args, 1, array, 0, length);
+            }
+            Scriptable argsObj = cx.newArray(shell, array);
+            shell.defineProperty("arguments", argsObj,
+                                 ScriptableObject.DONTENUM);
+
+            shell.processSource(cx, args.length == 0 ? null : args[0]);
+        } finally {
+            Context.exit();
+        }
+    }
+
+    /**
+     * Parse arguments.
+     */
+    public static String[] processOptions(Context cx, String args[]) {
+        for (int i=0; i < args.length; i++) {
+            String arg = args[i];
+            if (!arg.startsWith("-")) {
+                String[] result = new String[args.length - i];
+                for (int j=i; j < args.length; j++)
+                    result[j-i] = args[j];
+                return result;
+            }
+            if (arg.equals("-version")) {
+                if (++i == args.length)
+                    usage(arg);
+                double d = Context.toNumber(args[i]);
+                if (d != d)
+                    usage(arg);
+                cx.setLanguageVersion((int) d);
+                continue;
+            }
+            usage(arg);
+        }
+        return new String[0];
+    }
+
+    /**
+     * Print a usage message.
+     */
+    private static void usage(String s) {
+        p("Didn't understand \"" + s + "\".");
+        p("Valid arguments are:");
+        p("-version 100|110|120|130|140|150|160|170");
+        System.exit(1);
+    }
+
+    /**
+     * Print a help message.
+     *
+     * This method is defined as a JavaScript function.
+     */
+    public void help() {
+        p("");
+        p("Command                Description");
+        p("=======                ===========");
+        p("help()                 Display usage and help messages. ");
+        p("defineClass(className) Define an extension using the Java class");
+        p("                       named with the string argument. ");
+        p("                       Uses ScriptableObject.defineClass(). ");
+        p("load(['foo.js', ...])  Load JavaScript source files named by ");
+        p("                       string arguments. ");
+        p("loadClass(className)   Load a class named by a string argument.");
+        p("                       The class must be a script compiled to a");
+        p("                       class file. ");
+        p("print([expr ...])      Evaluate and print expressions. ");
+        p("quit()                 Quit the shell. ");
+        p("version([number])      Get or set the JavaScript version number.");
+        p("");
+    }
+
+    /**
+     * Print the string values of its arguments.
+     *
+     * This method is defined as a JavaScript function.
+     * Note that its arguments are of the "varargs" form, which
+     * allows it to handle an arbitrary number of arguments
+     * supplied to the JavaScript function.
+     *
+     */
+    public static void print(Context cx, Scriptable thisObj,
+                             Object[] args, Function funObj)
+    {
+        for (int i=0; i < args.length; i++) {
+            if (i > 0)
+                System.out.print(" ");
+
+            // Convert the arbitrary JavaScript value into a string form.
+            String s = Context.toString(args[i]);
+
+            System.out.print(s);
+        }
+        System.out.println();
+    }
+
+    /**
+     * Quit the shell.
+     *
+     * This only affects the interactive mode.
+     *
+     * This method is defined as a JavaScript function.
+     */
+    public void quit()
+    {
+        quitting = true;
+    }
+
+    /**
+     * Get and set the language version.
+     *
+     * This method is defined as a JavaScript function.
+     */
+    public static double version(Context cx, Scriptable thisObj,
+                                 Object[] args, Function funObj)
+    {
+        double result = cx.getLanguageVersion();
+        if (args.length > 0) {
+            double d = Context.toNumber(args[0]);
+            cx.setLanguageVersion((int) d);
+        }
+        return result;
+    }
+
+    /**
+     * Load and execute a set of JavaScript source files.
+     *
+     * This method is defined as a JavaScript function.
+     *
+     */
+    public static void load(Context cx, Scriptable thisObj,
+                            Object[] args, Function funObj)
+    {
+        Shell shell = (Shell)getTopLevelScope(thisObj);
+        for (int i = 0; i < args.length; i++) {
+            shell.processSource(cx, Context.toString(args[i]));
+        }
+    }
+
+
+    /**
+     * Evaluate JavaScript source.
+     *
+     * @param cx the current context
+     * @param filename the name of the file to compile, or null
+     *                 for interactive mode.
+     */
+    private void processSource(Context cx, String filename)
+    {
+        if (filename == null) {
+            BufferedReader in = new BufferedReader
+                (new InputStreamReader(System.in));
+            String sourceName = "<stdin>";
+            int lineno = 1;
+            boolean hitEOF = false;
+            do {
+                int startline = lineno;
+                System.err.print("js> ");
+                System.err.flush();
+                try {
+                    String source = "";
+                    // Collect lines of source to compile.
+                    while(true) {
+                        String newline;
+                        newline = in.readLine();
+                        if (newline == null) {
+                            hitEOF = true;
+                            break;
+                        }
+                        source = source + newline + "\n";
+                        lineno++;
+                        // Continue collecting as long as more lines
+                        // are needed to complete the current
+                        // statement.  stringIsCompilableUnit is also
+                        // true if the source statement will result in
+                        // any error other than one that might be
+                        // resolved by appending more source.
+                        if (cx.stringIsCompilableUnit(source))
+                            break;
+                    }
+                    Object result = cx.evaluateString(this, source,
+                                                      sourceName, startline,
+                                                      null);
+                    if (result != Context.getUndefinedValue()) {
+                        System.err.println(Context.toString(result));
+                    }
+                }
+                catch (WrappedException we) {
+                    // Some form of exception was caught by JavaScript and
+                    // propagated up.
+                    System.err.println(we.getWrappedException().toString());
+                    we.printStackTrace();
+                }
+                catch (EvaluatorException ee) {
+                    // Some form of JavaScript error.
+                    System.err.println("js: " + ee.getMessage());
+                }
+                catch (JavaScriptException jse) {
+                    // Some form of JavaScript error.
+                    System.err.println("js: " + jse.getMessage());
+                }
+                catch (IOException ioe) {
+                    System.err.println(ioe.toString());
+                }
+                if (quitting) {
+                    // The user executed the quit() function.
+                    break;
+                }
+            } while (!hitEOF);
+            System.err.println();
+        } else {
+            FileReader in = null;
+            try {
+                in = new FileReader(filename);
+            }
+            catch (FileNotFoundException ex) {
+                Context.reportError("Couldn't open file \"" + filename + "\".");
+                return;
+            }
+
+            try {
+                // Here we evalute the entire contents of the file as
+                // a script. Text is printed only if the print() function
+                // is called.
+                cx.evaluateReader(this, in, filename, 1, null);
+            }
+            catch (WrappedException we) {
+                System.err.println(we.getWrappedException().toString());
+                we.printStackTrace();
+            }
+            catch (EvaluatorException ee) {
+                System.err.println("js: " + ee.getMessage());
+            }
+            catch (JavaScriptException jse) {
+                System.err.println("js: " + jse.getMessage());
+            }
+            catch (IOException ioe) {
+                System.err.println(ioe.toString());
+            }
+            finally {
+                try {
+                    in.close();
+                }
+                catch (IOException ioe) {
+                    System.err.println(ioe.toString());
+                }
+            }
+        }
+    }
+
+    private static void p(String s) {
+        System.out.println(s);
+    }
+
+    private boolean quitting;
+}
+