public ParameterScope( IScope parent, string[] parameters )
{
_parent = parent;
_contents = new StandardScope();
foreach( string p in parameters )
_contents.set( p, null );
}
public object invoke( VerbParameters param, bool coralContinuation )
{
// Inject the verb script blob parameters as script variables.
var scope = new Dictionary<string, object>();
scope["input"] = param.input;
scope["inputwords"] = param.inputwords;
scope["self"] = new Proxies.MobProxy(param.self, param.player);
scope["obj"] = new Proxies.MobProxy(param.dobj, param.player);
if (param.prep != Prep.None)
scope["prep"] = param.prep.ToString().ToLowerInvariant();
else
scope["prep"] = null;
scope["indobj"] = new Proxies.MobProxy(param.iobj, param.player);
if (param.prep2 != Prep.None)
scope["prep2"] = param.prep2.ToString().ToLowerInvariant();
else
scope["prep2"] = null;
scope["indobj2"] = new Proxies.MobProxy(param.iobj2, param.player);
scope["objwords"] = param.dobjwords;
scope["prepwords"] = param.prepwords;
scope["indobjwords"] = param.iobjwords;
scope["prep2words"] = param.prep2words;
scope["indobj2words"] = param.iobj2words;
// Inject some standard MOO objects.
scope["ambiguous"] = Proxies.MobProxy.Ambiguous;
scope["none"] = Proxies.MobProxy.None;
// Inject the player object.
Proxies.PlayerProxy player = null;
if (param.player != null)
player = new Proxies.PlayerProxy( param.player, param.world );
scope["player"] = player;
// "caller" is the same as the player, unless otherwise specified.
if (param.caller != null)
scope["caller"] = new Proxies.MobProxy(param.caller, param.player);
else
scope["caller"] = player;
scope["args"] = param.args;
scope["world"] = new Proxies.WorldProxy(param.world, param.player);
scope["$"] = new Proxies.MobProxy(param.world.findObject(1), param.player);
scope["perms"] = Proxies.PermBitsProxy.Static;
Func<string,object> querier = (name) => {
if (name.StartsWithI("#")) {
int number = CultureFree.ParseInt(name.Substring(1));
if( number == Mob.Anon.id )
{
Mob m = param.player.anonMob;
if( m != null )
return new Proxies.MobProxy( m, param.player );
}
return new Proxies.MobProxy(param.world.findObject(number), param.player);
}
return null;
};
// Is the verb valid / compiled properly?
if( !_coral.success )
{
player.write( "Verb was not properly compiled." );
if( _coral.errors != null )
{
foreach( var err in _coral.errors )
player.write( " line {0}, col {1}: {2}".FormatI( err.line, err.col, err.message ) );
}
return null;
}
// We have to run the code first, for it to define its verb.
var runner = new Coral.Runner();
var tempScope = new Coral.StandardScope( runner.state.baseScope );
runner.pushScope( tempScope );
runner.setScopeCallback( querier );
foreach( var kv in scope )
runner.addToScope( kv.Key, kv.Value );
runner.runSync( _coral );
Coral.FValue verbFunc = (Coral.FValue)tempScope.get( "verb" );
tempScope.delete( "verb" );
// Now that's done, hook up to the main state.
runner = new Coral.Runner( param.player.coralState );
runner.pushScope( tempScope );
// Pass these on literally to any down-stream invokes.
runner.state.baggage.set( VerbParamsKey, param );
Coral.StackTrace.StackFrame frame = new Coral.StackTrace.StackFrame()
{
unitName = "<climoo>",
funcName = "<trampoline>"
};
// If there wasn't one, throw a sensible error.
if( verbFunc == null )
throw new InvalidOperationException( "Verb does not define a function called 'verb'." );
// Print security context debug info if the player's debug flag is set.
if( player.get.attrHas( "debug" ) )
{
var value = player.get.attrGet( "debug" ).contents;
if( value is bool && (bool)value )
{
string securityStack = String.Join( "->",
param.player.actorContextStack.Select( id => "{0}".FormatI( id ) )
.ToArray()
);
string securityText = "[color=#0cc]Running {0} as {1} ({2})[/color]".FormatI( this.name, param.player.actorContext, securityStack );
param.player.writeError( securityText );
}
}
// If we came from Coral and we're going to Coral, use a continuation.
if( coralContinuation )
{
return new Coral.AsyncAction()
{
action = Coral.AsyncAction.Action.Call,
function = verbFunc,
args = param.args,
frame = frame
};
}
else
{
try
{
runner.state.scope.set( "!verb-" + this.name, verbFunc );
return runner.callFunction( "!verb-" + this.name, param.args, typeof( object ), frame );
}
catch( Coral.CoralException ex )
{
param.player.writeError( "Unhandled exception {0}: {1}\n{2}".FormatI( ex.name, ex.Message, ex.trace ) );
return null;
}
}
}