/**
* Copyright (c) 2005-2017, KoLmafia development team
* http://kolmafia.sourceforge.net/
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* [1] Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* [2] Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* [3] Neither the name "KoLmafia" nor the names of its contributors may
* be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION ) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE ) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
package net.sourceforge.kolmafia.textui.parsetree;
import java.io.PrintStream;
import net.sourceforge.kolmafia.KoLmafia;
import net.sourceforge.kolmafia.KoLConstants.MafiaState;
import net.sourceforge.kolmafia.StaticEntity;
import net.sourceforge.kolmafia.textui.DataTypes;
import net.sourceforge.kolmafia.textui.Interpreter;
public class Try
extends ParseTreeNode
{
private final Scope body, finalClause;
public Try( final Scope body, final Scope finalClause )
{
this.body = body;
this.finalClause = finalClause;
}
@Override
public Value execute( final Interpreter interpreter )
{
if ( !KoLmafia.permitsContinue() )
{
interpreter.setState( Interpreter.STATE_EXIT );
return null;
}
Value result = DataTypes.VOID_VALUE;
interpreter.traceIndent();
if ( interpreter.isTracing() )
{
interpreter.trace( "Entering try body" );
}
try
{
result = this.body.execute( interpreter );
}
finally
{
if ( this.finalClause != null )
{
String oldState = interpreter.getState();
boolean userAborted = StaticEntity.userAborted;
MafiaState continuationState = StaticEntity.getContinuationState();
KoLmafia.forceContinue();
interpreter.setState( Interpreter.STATE_NORMAL );
if ( interpreter.isTracing() )
{
interpreter.trace( "Entering finally, saved state: " + oldState );
}
this.finalClause.execute( interpreter );
// Unless the finally block aborted, restore previous state
if ( !KoLmafia.refusesContinue() )
{
interpreter.setState( oldState );
StaticEntity.setContinuationState( continuationState );
StaticEntity.userAborted = userAborted;
}
}
}
interpreter.traceUnindent();
return result;
}
@Override
public boolean assertBarrier()
{
return this.body.assertBarrier() || this.finalClause.assertBarrier();
}
@Override
public boolean assertBreakable()
{
return this.body.assertBreakable() || this.finalClause.assertBreakable();
}
@Override
public String toString()
{
return "try";
}
@Override
public void print( final PrintStream stream, final int indent )
{
Interpreter.indentLine( stream, indent );
stream.println( "<TRY>" );
this.body.print( stream, indent + 1 );
if ( this.finalClause != null )
{
Interpreter.indentLine( stream, indent );
stream.println( "<FINALLY>" );
this.finalClause.print( stream, indent + 1 );
}
}
}