public static bool IsNull(E expr, FullExpressionDecoder <V, E> decoder)
{
VisitorForIsNull <V, E> v = decoder.IsNullVisitor;
bool res = Decode(expr, v, decoder);
return(res);
}
public static bool IsVariable(E expr, out V var, FullExpressionDecoder <V, E> decoder)
{
VisitorForVariable <V, E> visitor = decoder.VariableVisitor;
bool res = Decode(expr, visitor, decoder);
var = visitor.variable;
return(res);
}
public static bool IsSizeOf(E expr, out TypeNode type, FullExpressionDecoder <V, E> decoder)
{
VisitorForSizeOf <V, E> v = decoder.SizeOfVisitor;
bool res = Decode(expr, v, decoder);
type = v.result;
return(res);
}
public static bool IsIsInst(E expr, out TypeNode type, out E arg, FullExpressionDecoder <V, E> decoder)
{
VisitorForIsInst <V, E> v = decoder.IsInstVisitor;
bool res = Decode(expr, v, decoder);
arg = v.argument;
type = v.type;
return(res);
}
public static bool IsUnary(E expr, out UnaryOperator op, out E arg, FullExpressionDecoder <V, E> decoder)
{
VisitorForIsUnaryExpression <V, E> v = decoder.UnaryExpressionVisitor;
bool res = Decode(expr, v, decoder);
op = v.Operator;
arg = v.Argument;
return(res);
}
public static bool IsConstant(E expr, out object value, out TypeNode type, FullExpressionDecoder <V, E> decoder)
{
VisitorForValueOf <V, E> v = decoder.ValueOfVisitor;
bool res = Decode(expr, v, decoder);
value = v.Value;
type = v.Type;
return(res);
}
protected static bool Decode <Visitor> (E expr, Visitor visitor, FullExpressionDecoder <V, E> decoder)
where Visitor : QueryVisitor <V, E>
{
return(decoder.ContextProvider.ExpressionContext.Decode <Dummy, bool, Visitor> (expr, visitor, Dummy.Value));
}
public static void AddFreeVariables(E expr, ISet <E> set, FullExpressionDecoder <V, E> decoder)
{
decoder.VariablesInVisitor.Recurse(expr, set);
}
public static bool IsBinary(E expr, out BinaryOperator bop, out E left, out E right, FullExpressionDecoder <V, E> decoder)
{
VisitorForIsBinaryExpression <V, E> v = decoder.BinaryExpressionVisitor;
bool res = Decode(expr, v, decoder);
bop = v.op;
left = v.left;
right = v.right;
return(res);
}