public override Expression GenerateRead(Compilation.AstGenerator gen)
{
bool assign, post;
var type = GetExpressionType(operation, out assign, out post);
Expression ret;
if (assign)
{
Assert.IsTrue(() => value is WritableNode);
WritableNode writable = (WritableNode)value;
if (post)
{
ParameterExpression temp = Expression.Variable(typeof(TotemObject), "temp");
var read = value.GenerateRead(gen);
ret = Expression.Block(
new ParameterExpression[] { temp },
Expression.Assign(temp, read),
writable.GenerateWrite(gen, ExpressionType.Assign, gen.Unary(type, read)),
temp
);
}
else
{
var read = value.GenerateRead(gen);
ret = writable.GenerateWrite(gen, ExpressionType.Assign, gen.Unary(type, read));
}
}
else
ret = gen.Unary(
type,
value.GenerateRead(gen)
);
return ret;
}