package act.view;
/*-
* #%L
* ACT Framework
* %%
* Copyright (C) 2014 - 2017 ActFramework
* %%
* Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* #L%
*/
import act.app.*;
import org.osgl.util.S;
import java.util.List;
/**
* Base class for Template error
*/
public abstract class TemplateException extends ActErrorResult {
protected SourceInfo templateInfo;
private String errorSpotTraceLine = null;
public TemplateException(Exception t) {
super(t);
}
public final SourceInfo templateSourceInfo() {
return templateInfo;
}
public abstract String errorMessage();
@Override
public boolean isErrorSpot(String traceLine, String nextTraceLine) {
if (null == errorSpotTraceLine) {
errorSpotTraceLine = findErrorSpotTraceLine(stackTrace());
}
return S.eq(traceLine, errorSpotTraceLine);
}
@Override
public synchronized Throwable getCause() {
Throwable t0 = super.getCause();
if (null == t0) {
return null;
}
Throwable t = t0.getCause();
return null == t ? t0 : t;
}
public Throwable getDirectCause() {
return super.getCause();
}
protected String findErrorSpotTraceLine(List<String> stackTrace) {
String spotLine = null, lastLine = null;
for (String line: stackTrace) {
if (line.contains("sun.reflect.NativeMethodAccessorImpl.invoke0")) {
spotLine = lastLine;
}
if (isTemplateEngineInvokeLine(line)) {
return spotLine;
}
lastLine = line;
}
return null;
}
protected static SourceInfo getJavaSourceInfo(Throwable cause) {
if (null == cause) {
return null;
}
cause = rootCauseOf(cause);
DevModeClassLoader cl = (DevModeClassLoader) App.instance().classLoader();
for (StackTraceElement stackTraceElement : cause.getStackTrace()) {
int line = stackTraceElement.getLineNumber();
if (line <= 0) {
continue;
}
Source source = cl.source(stackTraceElement.getClassName());
if (null == source) {
continue;
}
return new SourceInfoImpl(source, line);
}
return null;
}
protected abstract boolean isTemplateEngineInvokeLine(String line);
}