/******************************************************************************* * * * File: Rhino_11a.java Revision: 1.0 * * * * Purpose: creates JavaScript objects with "Prototype" and "Parent" from * * within Java and tests them under JavaScript * * * * Creation: 01.11.2001 Last Modification: 01.11.2001 * * * * Platform: IBM-compatible PC running Windows 98SE * * * * Environment: Java 1.3 * * * * Author: Andreas Rozek Phone: ++49 (711) 6770682 * * Kirschblütenweg 15 Fax: - * * D-70569 Stuttgart EMail: Andreas.Rozek@T-Online.De * * Germany * * * * URL: http://www.Andreas-Rozek.de/ * * * * Copyright: this software is published under the "GNU Lesser General Pub- * * lic License" (see "http://www.fsf.org/copyleft/lesser.html" * * for additional information) * * * * Comments: (none) * * * *******************************************************************************/ import java.io.*; // Java file handling and stream IO import org.mozilla.javascript.*; // Rhino distribution classes public class Rhino_11a extends ScriptableObject { /******************************************************************************* * * * Non-Public Class Variables * * * *******************************************************************************/ static Rhino_11a Global; // refers to the JavaScript "Global" object static Object undefined; // shortcut referring to the "undefined" value /******************************************************************************* * * * Public Class Methods * * * *******************************************************************************/ /******************************************************************************* * * * evaluateFile evaluates the contents of a given (script source) file * * * *******************************************************************************/ public static void evaluateFile (Context actualContext, String FileName) { FileReader InStream = null; try { InStream = new FileReader(FileName); actualContext.evaluateReader(Global, InStream, FileName, 1, null); } catch (FileNotFoundException Signal) { Context.reportError( "unable to open file \"" + FileName + "\" (reason: \"" + Signal.getMessage() + "\")" ); } catch (WrappedException Signal) { Context.reportError( "WrappedException while evaluating file \"" + FileName + "\" (reason: \"" + Signal.getMessage() + "\")" ); } catch (EvaluatorException Signal) { Context.reportError( "EvaluatorException while evaluating file \"" + FileName + "\" (reason: \"" + Signal.getMessage() + "\")" ); } catch (JavaScriptException Signal) { Context.reportError( "JavaScriptException while evaluating file \"" + FileName + "\" (reason: \"" + Signal.getMessage() + "\")" ); } catch (IOException Signal) { Context.reportError( "error while reading file \"" + FileName + "\" (reason: \"" + Signal.getMessage() + "\")" ); } finally { try { if (InStream != null) InStream.close(); } catch (Exception Signal) { /* nop */ }; }; }; /******************************************************************************* * * * evaluateString evaluates the contents of a given script source * * * *******************************************************************************/ public static void evaluateString (Context actualContext, String SourceText) { try { actualContext.evaluateString(Global, SourceText, "Rhino_11a", 1, null); } catch (WrappedException Signal) { Context.reportError( "WrappedException while evaluating the internal script source " + "(reason: \"" + Signal.getMessage() + "\")" ); } catch (EvaluatorException Signal) { Context.reportError( "EvaluatorException while evaluating the internal script source " + "(reason: \"" + Signal.getMessage() + "\")" ); } catch (JavaScriptException Signal) { Context.reportError( "JavaScriptException while evaluating the internal script source " + "(reason: \"" + Signal.getMessage() + "\")" ); }; }; /******************************************************************************* * * * exit leaves the shell with the given return code * * * *******************************************************************************/ public static void exit ( Context actualContext, Scriptable actualObject, Object[] ArgList, Function FunctionContext ) { if (ArgList.length == 0) { java.lang.System.exit(0); } else if (ArgList.length != 1) { throw new IllegalArgumentException("exit(code) called with more than one argument"); } else if (ArgList[0] == undefined) { throw new IllegalArgumentException("exit(code) called with an undefined argument"); } else { double ReturnCode = Context.toNumber(ArgList[0]); if (Double.isNaN(ReturnCode)) { throw new IllegalArgumentException("exit(code) called with non-numeric argument"); } else if (Double.isInfinite(ReturnCode) || (ReturnCode < Integer.MIN_VALUE) || (ReturnCode > Integer.MAX_VALUE)) { throw new IllegalArgumentException("exit(code) called with infinite numeric argument"); } else { java.lang.System.exit((int) ReturnCode); }; }; }; /******************************************************************************* * * * main main program * * * *******************************************************************************/ public static void main (String ArgList[]) { if (ArgList.length != 0) { complainln("Warning: any given command line arguments will be ignored"); }; /**** prepare Rhino execution environment ****/ Global = new Rhino_11a(); // let "Rhino_11a" become the "Global" object Context ScriptContext = Context.enter(); Scriptable ScriptScope = ScriptContext.initStandardObjects(Global); undefined = ScriptContext.getUndefinedValue(); /**** register internal functions ****/ String[] NameList = {"exit", "print", "println"}; try { Global.defineFunctionProperties(NameList, Rhino_11a.class, ScriptableObject.DONTENUM); } catch (PropertyException Signal) { complainln("unable to register global shell functions"); exit(-1); }; /**** now create various JavaScript objects ****/ Scriptable Container = null; try { Container = ScriptContext.newObject(Global); Container.put("Background", Container, "lightgrey"); Global.put("Container", Global, Container); } catch (Exception Signal) { complainln("error while creating a \"Container\""); complainln("(reason: \"" + Signal.getMessage() + "\")"); exit(-1); }; Scriptable ControlProto = null; try { ControlProto = ScriptContext.newObject(Global); ControlProto.put("Foreground", ControlProto, "black"); ControlProto.put("Text", ControlProto, ""); Global.put("ControlProto", Global, ControlProto); } catch (Exception Signal) { complainln("error while creating a \"ControlProto\""); complainln("(reason: \"" + Signal.getMessage() + "\")"); exit(-1); }; Scriptable Control = null; try { Control = ScriptContext.newObject(Global); Control.setPrototype(ControlProto); Control.setParentScope(Container); Control.put("Text", Control, "(anything)"); Global.put("Control", Global, Control); } catch (Exception Signal) { complainln("error while creating a \"Control\""); complainln("(reason: \"" + Signal.getMessage() + "\")"); exit(-1); }; /**** and test their appearance under JavaScript ****/ evaluateFile(ScriptContext,"Rhino_11a.js"); ScriptContext.exit(); /**** that's it! ****/ exit(0); }; /******************************************************************************* * * * print, println print the given arguments onto "stdout" * * * *******************************************************************************/ public static void print ( Context actualContext, Scriptable actualObject, Object[] ArgList, Function FunctionContext ) { for (int i = 0; i < ArgList.length; i++) { // don't worry about "undefined" arguments java.lang.System.out.print(Context.toString(ArgList[i])); }; }; public static void println ( Context actualContext, Scriptable actualObject, Object[] ArgList, Function FunctionContext ) { print(actualContext,actualObject,ArgList,FunctionContext); java.lang.System.out.println(); }; /******************************************************************************* * * * Non-Public Class Methods * * * *******************************************************************************/ /******************************************************************************* * * * complain, complainln print the given message onto "stderr" * * * *******************************************************************************/ static void complain (String Message) { java.lang.System.out.print(Message); }; static void complainln () { java.lang.System.out.println(); }; static void complainln (String Message) { java.lang.System.out.println(Message); }; /******************************************************************************* * * * exit leaves the program with the given return code * * * *******************************************************************************/ static void exit (int ReturnCode) { java.lang.System.exit(ReturnCode); }; /******************************************************************************* * * * print, println print the given message onto "stdout" * * * *******************************************************************************/ static void print (String Message) { java.lang.System.out.print(Message); }; static void println () { java.lang.System.out.println(); }; static void println (String Message) { java.lang.System.out.println(Message); }; /******************************************************************************* * * * Public Instance Methods * * * *******************************************************************************/ /******************************************************************************* * * * getClassName yields the (Rhino-internal) name of this "class" * * * *******************************************************************************/ public String getClassName () { return "global"; }; };