com.twineworks.tweakflow.lang.errors.LangException Maven / Gradle / Ivy
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Embeddable expression language for Java.
/*
* The MIT License (MIT)
*
* Copyright (c) 2017 Twineworks GmbH
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package com.twineworks.tweakflow.lang.errors;
import com.twineworks.tweakflow.lang.interpreter.Stack;
import com.twineworks.tweakflow.lang.parse.SourceInfo;
import com.twineworks.tweakflow.lang.values.DictValue;
import com.twineworks.tweakflow.lang.values.Value;
import com.twineworks.tweakflow.lang.values.ValueInspector;
import com.twineworks.tweakflow.lang.values.Values;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import java.util.function.BiConsumer;
public class LangException extends RuntimeException {
private ErrorCode code;
private Stack stack;
private SourceInfo sourceInfo;
private Map properties = new HashMap<>();
private LangException(Throwable t, ErrorCode code, String message, Stack stack, SourceInfo sourceInfo) {
super(message, t);
this.code = code;
this.stack = stack == null ? null : stack.copy();
this.sourceInfo = sourceInfo;
}
private LangException(Throwable t, ErrorCode code) {
super(t);
this.code = code;
}
public LangException(ErrorCode code, String message, Stack stack, SourceInfo sourceInfo) {
super(message);
this.code = code;
this.stack = stack == null ? null : stack.copy();
this.sourceInfo = sourceInfo;
}
public LangException(ErrorCode code, String message, SourceInfo sourceInfo) {
super(message);
this.code = code;
this.sourceInfo = sourceInfo;
}
public LangException(ErrorCode code, SourceInfo sourceInfo) {
this.code = code;
this.sourceInfo = sourceInfo;
}
public LangException(ErrorCode code, String message, Stack stack) {
super(message);
this.code = code;
this.stack = stack == null ? null : stack.copy();
}
public LangException(ErrorCode code, String message) {
super(message);
this.code = code;
}
public LangException(ErrorCode code) {
this.code = code;
}
public LangException(ErrorCode code, Stack stack) {
this.code = code;
this.stack = stack == null ? null : stack.copy();
}
public LangException(Throwable t, ErrorCode code, Stack stack) {
super(t);
this.code = code;
this.stack = stack == null ? null : stack.copy();
}
public SourceInfo getSourceInfo() {
return sourceInfo;
}
public LangException setSourceInfo(SourceInfo sourceInfo) {
this.sourceInfo = sourceInfo;
return this;
}
public static LangException wrap(Throwable reason){
return wrap(reason, null, null);
}
public static LangException wrap(Throwable reason, ErrorCode code, Stack stack){
// if reason is already a Eval exception and already has requested code
// return it directly
if (reason instanceof LangException){
LangException e = (LangException) reason;
if (code == e.code || code == null){
return e;
}
}
// wrap otherwise
if (code == null){
return new LangException(reason, LangError.UNKNOWN_ERROR, stack);
}
else{
return new LangException(reason, code, stack);
}
}
public static LangException wrap(Throwable reason, ErrorCode code){
// if reason is already a Eval exception and already has requested code
// return it directly
if (reason instanceof LangException){
LangException e = (LangException) reason;
if (code == e.code || code == null){
return e;
}
}
// wrap otherwise
if (code == null){
return new LangException(reason, LangError.UNKNOWN_ERROR);
}
else{
return new LangException(reason, code);
}
}
public Stack getStack() {
return stack;
}
public void setStack(Stack stack) {
this.stack = stack.copy();
}
public ErrorCode getCode() {
return code;
}
public void printDigestMessageAndStackTrace(){
printDigestMessage();
System.err.flush();
printStackTrace();
System.err.flush();
}
public void printDigestMessage(){
System.err.println(getDigestMessage());
}
public String getDigestMessage(){
if (getCause() instanceof LangException && getCause() != this){
return ((LangException) getCause()).getDigestMessage();
}
if (getCause() instanceof LangException){
return ((LangException) getCause()).getDigestMessage();
}
// System.out.println(getSourceInfo().getParseUnit().getProgramText());
return makeTraceString(getStack());
}
private String makeTraceString(Stack stack) {
StringBuilder trace = new StringBuilder();
trace.append("ERROR: \n");
trace.append(" code: ").append(code.getName()).append("\n");
trace.append(" message: ").append(getMessage() == null? code.getName() : getMessage()).append("\n");
if (getSourceInfo() != null){
trace.append(" at: ").append(getSourceInfo().toString()).append("\n");
String source = getSourceInfo().getSourceCode();
if (source != null){
trace.append(" source: ");
if (source.length() < 250){
trace.append(source);
}
else{
trace.append(source.substring(0, 250));
}
trace.append("\n");
}
}
for (Map.Entry entry : properties.entrySet()) {
try {
String traceLine = "";
if (entry.getValue() instanceof Value){
traceLine = ValueInspector.inspect((Value) entry.getValue());
}
else{
traceLine = ValueInspector.inspect(Values.make(entry.getValue()));
}
trace.append(" ").append(entry.getKey()).append(": ").append(traceLine).append("\n");
}
catch (RuntimeException ignore){
}
}
trace.append("TRACE:\n");
if (stack == null){
trace.append(" none");
}
else{
stack.forEach(
(x) -> trace
.append(" ")
.append(x.getNode().getSourceInfo().getFullLocation())
.append("\n")
);
}
return trace.toString();
}
public Value toTraceValue(){
// printStackTrace();
// custom properties
DictValue dict = new DictValue();
for (Map.Entry entry : properties.entrySet()) {
try {
if (entry.getValue() instanceof Value){
dict = dict.put(entry.getKey(), (Value) entry.getValue());
}
else{
dict = dict.put(entry.getKey(), Values.make(entry.getValue()));
}
}
catch (RuntimeException ignore){
}
}
dict = dict.put("code", Values.make(code.getName()));
if (getMessage() != null){
dict = dict.put("message", Values.make(getMessage()));
}
else{
dict = dict.put("message", Values.make(code.getName()));
}
if (getSourceInfo() != null){
dict = dict.put("at", Values.make(getSourceInfo().toString()));
String source = getSourceInfo().getSourceCode();
if (source != null){
if (source.length() < 250){
dict = dict.put("source", Values.make(source));
}
else{
dict = dict.put("source", Values.make(source.substring(0, 250)));
}
}
}
if (stack != null){
dict = dict.put("stack", stack.toValue());
}
return Values.make(dict);
}
public Map getProperties() {
return properties;
}
// delegate convenience methods for populating context map
public boolean containsKey(Object key) {
return properties.containsKey(key);
}
public Object get(Object key) {
return properties.get(key);
}
public LangException put(String key, Object value) {
properties.put(key, value);
return this;
}
public LangException putAll(Map m) {
properties.putAll(m);
return this;
}
public Set keySet() {
return properties.keySet();
}
public Set> entrySet() {
return properties.entrySet();
}
public Object getOrDefault(Object key, Object defaultValue) {
return properties.getOrDefault(key, defaultValue);
}
public void forEach(BiConsumer action) {
properties.forEach(action);
}
public LangException putIfAbsent(String key, Object value) {
properties.putIfAbsent(key, value);
return this;
}
public Value toErrorValue() {
// catchable value given explicitly?
Object explicitValue = get("value");
if (explicitValue instanceof Value) return (Value) explicitValue;
// construct an error value
DictValue dict = new DictValue();
dict = dict.put("code", Values.make(code.getName()));
if (getMessage() != null){
dict = dict.put("message", Values.make(getMessage()));
}
return Values.make(dict);
}
}
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