private void handleException(ParserExceptionWithSource exception) {
ParserException e = exception.getCause();
String sourceCode = exception.getSourceCode();
int lineOffset = exception.getSource().getLine();
String sourceInfo = String.format("%s:%d:%d", e.getFile(), e.getLine(), e.getColumn());
int start = skipLines(sourceCode, e.getLine() - lineOffset);
int end = nextLineTerminator(sourceCode, start);
String offendingLine = sourceCode.substring(start, end);
String marker = Strings.repeat('.', Math.max(e.getColumn() - 1, 0)) + '^';
console.printf("%s %s: %s%n", sourceInfo, e.getType(), e.getFormattedMessage());
console.printf("%s %s%n", sourceInfo, offendingLine);
console.printf("%s %s%n", sourceInfo, marker);
printStackTrace(e);
}
/**
* REPL: Read
*
* @param realm the realm instance
* @param line the current line
* @return the parsed script node or {@coden null} if the end of stream has been reached
*/
private com.github.anba.es6draft.ast.Script read(Realm realm, int[] line) {
StringBuilder sourceBuffer = new StringBuilder();
for (String prompt = PROMPT; ; prompt = "") {
String s = console.readLine(prompt);
if (s == null) {
return null;
}
sourceBuffer.append(s).append('\n');
String sourceCode = sourceBuffer.toString();
Source source = new Source(Paths.get(".").toAbsolutePath(), "typein", line[0]);
try {
com.github.anba.es6draft.ast.Script script = parse(realm, source, sourceCode);
line[0] += script.getEndLine() - script.getBeginLine();
return script;
} catch (ParserEOFException e) {
continue;
} catch (ParserException e) {
throw new ParserExceptionWithSource(e, source, sourceCode);
}
}
}
/**
* REPL: Print
*
* @param realm the realm instance
* @param result the object to be printed
*/
private void print(Realm realm, Object result) {
if (result != UNDEFINED) {
console.printf("%s%n", sourceBuilder.toSource(realm.defaultContext(), result));
}
}
private void handleException(Realm realm, UnhandledRejectionException e) {
String message = formatMessage("unhandled_rejection", e.getMessage(realm.defaultContext()));
console.printf("%s%n", message);
printStackTrace(e.getCauseIfPresent());
}
private void handleException(Realm realm, ScriptException e) {
String message = formatMessage("uncaught_exception", e.getMessage(realm.defaultContext()));
console.printf("%s%n", message);
printScriptStackTrace(realm, e);
printStackTrace(e);
}
private void handleException(IOException e) {
String message = Objects.toString(e.getMessage(), "");
console.printf("%s: %s%n", e.getClass().getSimpleName(), message);
printStackTrace(e);
}
private Repl(ShellConsole console, Options options) {
this.console = console;
this.options = options;
this.sourceBuilder =
new SourceBuilder(console.isAnsiSupported() && !options.noColor, 10, 30, 80);
}
private Realm newRealm() {
ObjectAllocator<? extends ShellGlobalObject> allocator;
if (options.shellMode == ShellMode.Mozilla) {
allocator = MozShellGlobalObject::new;
} else if (options.shellMode == ShellMode.V8) {
allocator = V8ShellGlobalObject::new;
} else {
allocator = SimpleShellGlobalObject::new;
}
BiFunction<RuntimeContext, ScriptLoader, ModuleLoader> moduleLoader;
switch (options.moduleLoaderMode) {
case Default:
moduleLoader = FileModuleLoader::new;
break;
case Node:
moduleLoader = NodeModuleLoader::new;
break;
case NodeStandard:
moduleLoader = NodeStandardModuleLoader::new;
break;
default:
throw new AssertionError();
}
/* @formatter:off */
RuntimeContext context =
new RuntimeContext.Builder()
.setBaseDirectory(Paths.get("").toAbsolutePath())
.setGlobalAllocator(allocator)
.setModuleLoader(moduleLoader)
.setConsole(console)
.setWorkerErrorReporter(this::errorReporter)
.setOptions(compatibilityOptions(options))
.setParserOptions(parserOptions(options))
.setCompilerOptions(compilerOptions(options))
.build();
/* @formatter:on */
World world = new World(context);
Realm realm = world.newRealm();
ExecutionContext cx = realm.defaultContext();
// Add completion to console
console.addCompleter(new ShellCompleter(realm));
// Execute global specific initialization
enqueueScriptTask(
realm,
() -> {
InitializeHostDefinedRealm(realm);
// Add global "arguments" property
ScriptObject arguments = CreateArrayFromList(cx, options.arguments);
CreateMethodProperty(cx, realm.getGlobalObject(), "arguments", arguments);
});
if (options.console) {
enqueueScriptTask(
realm,
() -> {
ScriptObject console = ConsoleObject.createConsole(realm);
CreateMethodProperty(cx, realm.getGlobalObject(), "console", console);
});
}
if (options.moduleLoaderMode == ModuleLoaderMode.Node) {
// TODO: Add default initialize(Realm) method to ModuleLoader interface?
enqueueScriptTask(
realm,
() -> {
NodeModuleLoader nodeLoader = (NodeModuleLoader) world.getModuleLoader();
nodeLoader.initialize(realm);
});
}
// Run eval expressions and files
for (EvalScript evalScript : options.evalScripts) {
if (options.module) {
enqueueScriptTask(
realm,
() -> {
ModuleSource moduleSource = evalScript.getModuleSource();
SourceIdentifier moduleName = evalScript.getModuleName();
try {
ModuleEvaluationJob(realm, moduleName, moduleSource);
} catch (ParserException e) {
Source source = moduleSource.toSource();
String file = e.getFile();
if (file.equals(source.getFileString())) {
throw new ParserExceptionWithSource(e, source, moduleSource.sourceCode());
}
Path filePath = Paths.get(file).toAbsolutePath();
Source errorSource = new Source(filePath, file, 1);
String code = new String(Files.readAllBytes(filePath), StandardCharsets.UTF_8);
throw new ParserExceptionWithSource(e, errorSource, code);
}
});
} else {
enqueueScriptTask(
realm,
() -> {
Source source = evalScript.getSource();
String sourceCode = evalScript.getSourceCode();
try {
eval(realm, parse(realm, source, sourceCode));
} catch (ParserException e) {
throw new ParserExceptionWithSource(e, source, sourceCode);
}
});
}
}
return realm;
}
