@NotNull
private static String renderStackTrace(@NotNull Throwable cause) {
StackTraceElement[] oldTrace = cause.getStackTrace();
List<StackTraceElement> newTrace = new ArrayList<StackTraceElement>();
boolean skip = true;
for (int i = oldTrace.length - 1; i >= 0; i--) {
StackTraceElement element = oldTrace[i];
// All our code happens in the script constructor, and no reflection/native code happens in
// constructors.
// So we ignore everything in the stack trace until the first constructor
if (element.getMethodName().equals("<init>")) {
skip = false;
}
if (!skip) {
newTrace.add(element);
}
}
Collections.reverse(newTrace);
cause.setStackTrace(newTrace.toArray(new StackTraceElement[newTrace.size()]));
return Throwables.getStackTraceAsString(cause);
}
@NotNull
public LineResult eval(@NotNull String line) {
++lineNumber;
FqName scriptFqName = new FqName("Line" + lineNumber);
Type scriptClassType = asmTypeByFqNameWithoutInnerClasses(scriptFqName);
StringBuilder fullText = new StringBuilder();
for (String prevLine : previousIncompleteLines) {
fullText.append(prevLine).append("\n");
}
fullText.append(line);
LightVirtualFile virtualFile =
new LightVirtualFile(
"line" + lineNumber + JetParserDefinition.STD_SCRIPT_EXT,
JetLanguage.INSTANCE,
fullText.toString());
virtualFile.setCharset(CharsetToolkit.UTF8_CHARSET);
JetFile psiFile =
(JetFile) psiFileFactory.trySetupPsiForFile(virtualFile, JetLanguage.INSTANCE, true, false);
assert psiFile != null : "Script file not analyzed at line " + lineNumber + ": " + fullText;
ReplMessageCollectorWrapper errorCollector = new ReplMessageCollectorWrapper();
AnalyzerWithCompilerReport.SyntaxErrorReport syntaxErrorReport =
AnalyzerWithCompilerReport.reportSyntaxErrors(
psiFile, errorCollector.getMessageCollector());
if (syntaxErrorReport.isHasErrors() && syntaxErrorReport.isAllErrorsAtEof()) {
previousIncompleteLines.add(line);
return LineResult.incomplete();
}
previousIncompleteLines.clear();
if (syntaxErrorReport.isHasErrors()) {
return LineResult.error(errorCollector.getString());
}
prepareForTheNextReplLine(topDownAnalysisContext);
trace.clearDiagnostics();
//noinspection ConstantConditions
psiFile.getScript().putUserData(ScriptPriorities.PRIORITY_KEY, lineNumber);
ScriptDescriptor scriptDescriptor = doAnalyze(psiFile, errorCollector);
if (scriptDescriptor == null) {
return LineResult.error(errorCollector.getString());
}
List<Pair<ScriptDescriptor, Type>> earlierScripts = Lists.newArrayList();
for (EarlierLine earlierLine : earlierLines) {
earlierScripts.add(
Pair.create(earlierLine.getScriptDescriptor(), earlierLine.getClassType()));
}
GenerationState state =
new GenerationState(
psiFile.getProject(),
ClassBuilderFactories.BINARIES,
module,
trace.getBindingContext(),
Collections.singletonList(psiFile));
compileScript(
psiFile.getScript(),
scriptClassType,
earlierScripts,
state,
CompilationErrorHandler.THROW_EXCEPTION);
for (OutputFile outputFile : state.getFactory().asList()) {
classLoader.addClass(
JvmClassName.byInternalName(outputFile.getRelativePath().replaceFirst("\\.class$", "")),
outputFile.asByteArray());
}
try {
Class<?> scriptClass = classLoader.loadClass(scriptFqName.asString());
Class<?>[] constructorParams = new Class<?>[earlierLines.size()];
Object[] constructorArgs = new Object[earlierLines.size()];
for (int i = 0; i < earlierLines.size(); ++i) {
constructorParams[i] = earlierLines.get(i).getScriptClass();
constructorArgs[i] = earlierLines.get(i).getScriptInstance();
}
Constructor<?> scriptInstanceConstructor = scriptClass.getConstructor(constructorParams);
Object scriptInstance;
try {
scriptInstance = scriptInstanceConstructor.newInstance(constructorArgs);
} catch (Throwable e) {
return LineResult.error(renderStackTrace(e.getCause()));
}
Field rvField = scriptClass.getDeclaredField("rv");
rvField.setAccessible(true);
Object rv = rvField.get(scriptInstance);
earlierLines.add(
new EarlierLine(line, scriptDescriptor, scriptClass, scriptInstance, scriptClassType));
JetType returnType = scriptDescriptor.getScriptCodeDescriptor().getReturnType();
return LineResult.successful(rv, returnType != null && KotlinBuiltIns.isUnit(returnType));
} catch (Throwable e) {
@SuppressWarnings("UseOfSystemOutOrSystemErr")
PrintWriter writer = new PrintWriter(System.err);
classLoader.dumpClasses(writer);
writer.flush();
throw UtilsPackage.rethrow(e);
}
}