/// <summary>
/// Returns <c>true</c> if the literal depicts a constant.
/// </summary>
/// <param name="lit">literal</param>
/// <param name="constValue">out parameter to receive the constant value, if the literal
/// depicts a constant, otherwise <c>null</c></param>
public static bool IsConst(this ILiteral lit, out object constValue)
{
IsConstLiteralVisitor vtor = new IsConstLiteralVisitor();
lit.Accept(vtor);
constValue = vtor.ConstValue;
return(vtor.Result);
}
/// <summary>
/// Returns <c>true</c> if the literal depicts a constant.
/// </summary>
/// <param name="lit">literal</param>
/// <param name="constValue">out parameter to receive the constant value, if the literal
/// depicts a constant, otherwise <c>null</c></param>
public static bool IsConst(this ILiteral lit, out object constValue)
{
IsConstLiteralVisitor vtor = new IsConstLiteralVisitor();
lit.Accept(vtor);
constValue = vtor.ConstValue;
return vtor.Result;
}