public static SilverBoxedInstance Box(object obj, SilverScope scope = null)
{
if (obj == null) {
return null;
}
if (_boxCache.ContainsKey(obj)) {
_boxCache[obj].BoxedScope.MergeWithScope(scope ?? new SilverScope());
return _boxCache[obj];
}
var boxed = new SilverBoxedInstance(obj, scope ?? new SilverScope());
_boxCache[obj] = boxed;
if (scope != null) {
string name;
SilverScope _scope = scope.SearchForObject(obj, out name);
if (_scope != null) {
_scope[name] = boxed;
}
}
return boxed;
}
public static SilverBoxedInstance BoxNoCache(object obj, SilverScope scope = null)
{
if (obj == null) {
return null;
}
var boxed = new SilverBoxedInstance(obj, scope ?? new SilverScope());
if (scope != null) {
string name;
SilverScope _scope = scope.SearchForObject(obj, out name);
if (_scope != null) {
_scope[name] = boxed;
}
}
return boxed;
}
private static dynamic InstanceEval(object self, string eval, SilverScope scope)
{
string xexpression = string.Format("{0};", eval);
var lexer = new SilverLexer("source", xexpression);
var stream = new CommonTokenStream(lexer.Queue);
var parser = new SilverParser(stream);
lexer.SetLines(parser);
var instance = self as SilverInstance;
if (instance == null)
{
return null;
}
Expression[] res = parser.program();
Expression block;
if (res != null)
{
scope["self"] = scope["super"] = instance;
scope["<ironsilver_context_invokemember>"] = true;
string selfName;
var selfScope = scope.SearchForObject(instance, out selfName);
if (selfScope != null && selfName != null)
{
scope["<ironsilver_context_selfscope>"] = selfScope;
scope["<ironsilver_context_selfname>"] = selfName;
}
block = AstExpression.Block(res);
// We want eval'd expressions to execute in the current scope, not its own child scopes. This ensures assignment evals work properly.
((BlockExpression)block).Scope = scope;
((BlockExpression)block).SetChildrenScopes(scope);
}
else
{
return null;
}
dynamic val = CompilerServices.CreateLambdaForExpression(block)();
return val;
}
