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/*******************************************************************************
* Copyright (c) 2009-2011 Luaj.org. All rights reserved.
*
* 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 org.luaj.vm2
/**
* RuntimeException that is thrown and caught in response to a lua error.
*
*
* [LuaError] is used wherever a lua call to `error()`
* would be used within a script.
*
*
* Since it is an unchecked exception inheriting from [RuntimeException],
* Java method signatures do notdeclare this exception, althoug it can
* be thrown on almost any luaj Java operation.
* This is analagous to the fact that any lua script can throw a lua error at any time.
*
*
* The LuaError may be constructed with a message object, in which case the message
* is the string representation of that object. getMessageObject will get the object
* supplied at construct time, or a LuaString containing the message of an object
* was not supplied.
*/
class LuaError : RuntimeException {
@kotlin.jvm.JvmField
var level: Int = 0
@kotlin.jvm.JvmField
var fileline: String? = null
@kotlin.jvm.JvmField
var traceback: String? = null
@kotlin.jvm.JvmField
var luaCause: Throwable? = null
private var `object`: LuaValue? = null
/** Get the LuaValue that was provided in the constructor, or
* a LuaString containing the message if it was a string error argument.
* @return LuaValue which was used in the constructor, or a LuaString
* containing the message.
*/
val messageObject: LuaValue?
get() {
if (`object` != null) return `object`
val m = message
return if (m != null) LuaValue.valueOf(m) else null
}
/** Get the string message if it was supplied, or a string
* representation of the message object if that was supplied.
*/
fun getLuaMessage(): String? {
if (traceback != null)
return traceback
val m = super.message ?: return null
return if (fileline != null) "$fileline $m" else m
}
/** Construct LuaError when a program exception occurs.
*
*
* All errors generated from lua code should throw LuaError(String) instead.
* @param cause the Throwable that caused the error, if known.
*/
constructor(cause: Throwable) : super("vm error: $cause") {
this.luaCause = cause
this.level = 1
}
/**
* Construct a LuaError with a specific message.
*
* @param message message to supply
*/
constructor(message: String) : super(message) {
this.level = 1
}
/**
* Construct a LuaError with a message, and level to draw line number information from.
* @param message message to supply
* @param level where to supply line info from in call stack
*/
constructor(message: String, level: Int) : super(message) {
this.level = level
}
/**
* Construct a LuaError with a LuaValue as the message object,
* and level to draw line number information from.
* @param message_object message string or object to supply
*/
constructor(message_object: LuaValue) : super(message_object.tojstring()) {
this.`object` = message_object
this.level = 1
}
/**
* Get the cause, if any.
*/
fun getLuaCause(): Throwable? {
return luaCause
}
}
