| /* |
| Copyright (c) 2004-2005, The Dojo Foundation |
| All Rights Reserved. |
| |
| Licensed under the Academic Free License version 2.1 or above OR the |
| modified BSD license. For more information on Dojo licensing, see: |
| |
| http://dojotoolkit.org/community/licensing.shtml |
| */ |
| |
| /* |
| * Rhino host environment |
| */ |
| |
| // make jsc shut up (so we can use jsc for sanity checking) |
| /*@cc_on |
| @if (@_jscript_version >= 7) |
| var loadClass; var print; var load; var quit; var version; var Packages; var java; |
| @end |
| @*/ |
| |
| // TODO: not sure what we gain from the next line, anyone? |
| //if (typeof loadClass == 'undefined') { dj_throw("attempt to use Rhino host environment when no 'loadClass' global"); } |
| |
| dojo.hostenv.name_ = 'rhino'; |
| dojo.hostenv.getVersion = function() {return version()}; |
| |
| // see comments in spidermonkey loadUri |
| dojo.hostenv.loadUri = function(uri, cb){ |
| dojo.debug("uri: "+uri); |
| try{ |
| // FIXME: what about remote URIs? |
| var found = true; |
| if(!(new java.io.File(uri)).exists()){ |
| try{ |
| // try it as a file first, URL second |
| (new java.io.URL(uri)).openStream(); |
| }catch(e){ |
| found = false; |
| } |
| } |
| if(!found){ |
| dojo.debug(uri+" does not exist"); |
| if(cb){ cb(0); } |
| return 0; |
| } |
| var ok = load(uri); |
| // dojo.debug(typeof ok); |
| dojo.debug("rhino load('", uri, "') returned. Ok: ", ok); |
| if(cb){ cb(1); } |
| return 1; |
| }catch(e){ |
| dojo.debug("rhino load('", uri, "') failed"); |
| if(cb){ cb(0); } |
| return 0; |
| } |
| } |
| |
| dojo.hostenv.println = print; |
| dojo.hostenv.exit = function(exitcode){ |
| quit(exitcode); |
| } |
| |
| // Hack to determine current script... |
| // |
| // These initial attempts failed: |
| // 1. get an EcmaError and look at e.getSourceName(): try {eval ("static in return")} catch(e) { ... |
| // Won't work because NativeGlobal.java only does a put of "name" and "message", not a wrapped reflecting object. |
| // Even if the EcmaError object had the sourceName set. |
| // |
| // 2. var e = Packages.org.mozilla.javascript.Context.getCurrentContext().reportError(''); |
| // Won't work because it goes directly to the errorReporter, not the return value. |
| // We want context.interpreterSourceFile and context.interpreterLine, which are used in static Context.getSourcePositionFromStack |
| // (set by Interpreter.java at interpretation time, if in interpreter mode). |
| // |
| // 3. var e = Packages.org.mozilla.javascript.Context.getCurrentContext().reportRuntimeError(''); |
| // This returns an object, but e.message still does not have source info. |
| // In compiler mode, perhaps not set; in interpreter mode, perhaps not used by errorReporter? |
| // |
| // What we found works is to do basically the same hack as is done in getSourcePositionFromStack, |
| // making a new java.lang.Exception() and then calling printStackTrace on a string stream. |
| // We have to parse the string for the .js files (different from the java files). |
| // This only works however in compiled mode (-opt 0 or higher). |
| // In interpreter mode, entire stack is java. |
| // When compiled, printStackTrace is like: |
| // java.lang.Exception |
| // at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) |
| // at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) |
| // at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) |
| // at java.lang.reflect.Constructor.newInstance(Constructor.java:274) |
| // at org.mozilla.javascript.NativeJavaClass.constructSpecific(NativeJavaClass.java:228) |
| // at org.mozilla.javascript.NativeJavaClass.construct(NativeJavaClass.java:185) |
| // at org.mozilla.javascript.ScriptRuntime.newObject(ScriptRuntime.java:1269) |
| // at org.mozilla.javascript.gen.c2.call(/Users/mda/Sites/burstproject/testrhino.js:27) |
| // ... |
| // at org.mozilla.javascript.tools.shell.Main.main(Main.java:76) |
| // |
| // Note may get different answers based on: |
| // Context.setOptimizationLevel(-1) |
| // Context.setGeneratingDebug(true) |
| // Context.setGeneratingSource(true) |
| // |
| // Some somewhat helpful posts: |
| // http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&oe=UTF-8&safe=off&selm=9v9n0g%246gr1%40ripley.netscape.com |
| // http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&oe=UTF-8&safe=off&selm=3BAA2DC4.6010702%40atg.com |
| // |
| // Note that Rhino1.5R5 added source name information in some exceptions. |
| // But this seems not to help in command-line Rhino, because Context.java has an error reporter |
| // so no EvaluationException is thrown. |
| |
| // do it by using java java.lang.Exception |
| function dj_rhino_current_script_via_java(depth) { |
| var optLevel = Packages.org.mozilla.javascript.Context.getCurrentContext().getOptimizationLevel(); |
| if (optLevel == -1) dj_unimplemented("getCurrentScriptURI (determine current script path for rhino when interpreter mode)", ''); |
| var caw = new java.io.CharArrayWriter(); |
| var pw = new java.io.PrintWriter(caw); |
| var exc = new java.lang.Exception(); |
| exc.printStackTrace(pw); |
| var s = caw.toString(); |
| // we have to exclude the ones with or without line numbers because they put double entries in: |
| // at org.mozilla.javascript.gen.c3._c4(/Users/mda/Sites/burstproject/burst/Runtime.js:56) |
| // at org.mozilla.javascript.gen.c3.call(/Users/mda/Sites/burstproject/burst/Runtime.js) |
| var matches = s.match(/[^\(]*\.js\)/gi); |
| if(!matches){ |
| throw Error("cannot parse printStackTrace output: " + s); |
| } |
| |
| // matches[0] is entire string, matches[1] is this function, matches[2] is caller, ... |
| var fname = ((typeof depth != 'undefined')&&(depth)) ? matches[depth + 1] : matches[matches.length - 1]; |
| var fname = matches[3]; |
| if(!fname){ fname = matches[1]; } |
| // print("got fname '" + fname + "' from stack string '" + s + "'"); |
| if (!fname) throw Error("could not find js file in printStackTrace output: " + s); |
| //print("Rhino getCurrentScriptURI returning '" + fname + "' from: " + s); |
| return fname; |
| } |
| |
| // UNUSED: leverage new support in native exception for getSourceName |
| /* |
| function dj_rhino_current_script_via_eval_exception() { |
| var exc; |
| // 'ReferenceError: "undefinedsymbol" is not defined.' |
| try {eval ("undefinedsymbol()") } catch(e) {exc = e;} |
| // 'Error: whatever' |
| // try{throw Error("whatever");} catch(e) {exc = e;} |
| // 'SyntaxError: identifier is a reserved word' |
| // try {eval ("static in return")} catch(e) { exc = e; } |
| print("got exception: '" + exc + "'"); |
| print("exc.stack=" + (typeof exc.stack)); |
| var sn = exc.getSourceName(); |
| print("SourceName=" + sn); |
| return sn; |
| } |
| */ |
| |
| // reading a file from disk in Java is a humiliating experience by any measure. |
| // Lets avoid that and just get the freaking text |
| function readText(uri){ |
| // NOTE: we intentionally avoid handling exceptions, since the caller will |
| // want to know |
| var jf = new java.io.File(uri); |
| var sb = new java.lang.StringBuffer(); |
| var input = new java.io.BufferedReader(new java.io.FileReader(jf)); |
| var line = ""; |
| while((line = input.readLine()) != null){ |
| sb.append(line); |
| sb.append(java.lang.System.getProperty("line.separator")); |
| } |
| return sb.toString(); |
| } |
| |
| // call this now because later we may not be on the top of the stack |
| if(!djConfig.libraryScriptUri.length){ |
| djConfig.libraryScriptUri = dj_rhino_current_script_via_java(1); |
| } |
| |
