public VarBase Calculate()
{
if (m_c == 0)
throw new CalcException("Ошибка: пустое выражение.");
Element top1 = null;
Element cur = m_top;
try {
for (; cur != null; cur = cur.m_next) {
if (cur.m_o is Call) {
int rc = (cur.m_o as Call).ReqCount;
ArgList al = new ArgList();
for (int i = 0; i < rc; i++) {
if (top1 == null)
throw new CalcException("Ошибка при вычислении выражения");
al.Add(top1.m_o.Compute());
top1 = top1.m_next;
}
(cur.m_o as Call).SetArgList(al);
top1 = new Element((cur.m_o as Call).Compute(), top1);
}
else {
top1 = new Element(cur.m_o, top1);
}
}
if ((top1 == null) || (top1.m_next != null))
throw new CalcException("Ошибка при вычислении выражения");
return top1.m_o.Compute();
}
catch (CalcException ex) {
throw ex;
}
catch {
throw new CalcException("Ошибка при вычислении выражения");
}
}
public override VarBase Perform(ArgList al) {
if (al.Count != ReqCount)
throw new OtherException("Неверный список аргументов");
al.Reset();
VarBase arg1 = al.Get();
VarBase arg2 = al.Get();
if(!(arg1.IsSingle()&&arg2.IsSingle()))
throw new CalcException("Неверные типы операндов");
return (arg1 as SingleVar).and(arg2 as SingleVar);
}
public override VarBase Perform(ArgList al) {
if (al.Count != ReqCount)
throw new OtherException("Неверный список аргументов");
al.Reset();
VarBase arg1 = al.Get();
if (arg1 is IntVar)
return ((arg1 as IntVar).Val>0) ? (arg1.Clone() as IntVar) : (new IntVar(-((IntVar) arg1).Val));
else if (arg1 is RealVar)
return ((arg1 as RealVar).Val>0) ? (arg1.Clone() as RealVar) : (new RealVar(-((RealVar) arg1).Val));
else
throw new CalcException("Неправильные аргументы функции");
}
public override VarBase Perform(ArgList al) {
if (al.Count != ReqCount)
throw new OtherException("Неверный список аргументов");
al.Reset();
VarBase arg1 = al.Get();
if (!arg1.IsNum())
throw new CalcException("Неправильные аргументы функции");
try {
return new RealVar(Math.Acos((arg1 as NumVar).ToDouble()));
}
catch {
throw new CalcException("Ошибка в вычислениях");
}
}
public override VarBase Perform(ArgList al)
{
if (al.Count != ReqCount)
throw new OtherException("Invalid argument list");
al.Reset();
VarBase arg1 = al.Get();
if (arg1.IsArray())
throw new CalcException("Ошибка преобразования");
if(arg1.IsString()) {
try {
double d = System.Convert.ToDouble((arg1 as StringVar).Val);
return new RealVar(d);
}
catch {
throw new CalcException("Ошибка преобразования");
}
}
else if (arg1.IsNum()) {
return new RealVar((arg1 as NumVar).ToDouble());
}
else
return null;
}
public override VarBase Perform(ArgList al) {
if (al.Count != ReqCount)
throw new OtherException("Неверный список аргументов");
al.Reset();
return new IntVar(al.Get().IsSingle());
}
public override VarBase Perform(ArgList al)
{
return InterprEnvironment.Instance.GetSub(m_name).Perform(al);
}
public override VarBase Perform(ArgList al)
{
if (al.Count != ReqCount)
throw new OtherException("Invalid argument list");
al.Reset();
VarBase arg1 = al.Get();
VarBase arg2 = al.Get();
if(!(arg1.IsNum()&&arg2.IsNum()))
throw new CalcException("Неверные типы операндов");
return (arg1 as NumVar).mul(arg2 as NumVar);
}
public override VarBase Perform(ArgList al)
{
if (al.Count != ReqCount)
throw new OtherException("Invalid argument list");
al.Reset();
return new IntVar(al.Get().IsString());
}
public override VarBase Perform(ArgList al)
{
if (al.Count != ReqCount)
throw new OtherException("Invalid argument list");
al.Reset();
VarBase arg1 = al.Get();
VarBase arg2 = al.Get();
if(!(arg1.IsInt()&&arg2.IsInt()))
throw new CalcException("Неверные типы операндов");
try {
int res = (arg1 as IntVar).Val % (arg2 as IntVar).Val;
return new IntVar(res);
}
catch(System.ArithmeticException ex) {
throw new CalcException("Ошибка в вычислениях");
}
}
public override VarBase Perform(ArgList al)
{
if(al.Count!=ReqCount)
throw new OtherException("Invalid argument list");
al.Reset();
VarBase arg1 = al.Get();
VarBase arg2 = al.Get();
if(!((arg1.IsArray()&&arg2.IsInt()))) {
throw new CalcException("Неверные типы операндов");
}
return (arg1 as ArrayVar).IsElementDefined((arg2 as IntVar).Val);
}
public void SetArgList(ArgList al)
{
m_al = al;
}
public override VarBase Perform(ArgList al) {
if (al.Count != ReqCount)
throw new OtherException("Неверный список аргументов");
al.Reset();
VarBase arg1 = al.Get();
return new StringVar(arg1.ToString());
}
public override VarBase Perform(ArgList al) {
if (al.Count != ReqCount)
throw new OtherException("Неверный список аргументов");
al.Reset();
VarBase arg1 = al.Get();
if (!arg1.IsString())
throw new CalcException("Неправильные аргументы функции");
return new IntVar((arg1 as StringVar).Val.Length);
}
public override VarBase Perform(ArgList al) {
if(al.Count!=ReqCount)
throw new OtherException("Неверный список аргументов");
return new RealVar(m_random.NextDouble());
}
public override VarBase Perform(ArgList al)
{
if (al.Count != ReqCount)
throw new OtherException("Invalid argument list");
al.Reset();
VarBase arg1 = al.Get();
if(!(arg1 is NumVar))
throw new CalcException("Неверные типы операндов");
else if(arg1 is IntVar)
return new IntVar(-(arg1 as IntVar).Val);
else
return new RealVar(-(arg1 as NumVar).ToDouble());
}
public override VarBase Perform(ArgList al)
{
if (al.Count != ReqCount)
throw new OtherException("Invalid argument list");
al.Reset();
VarBase arg1 = al.Get();
if(!(arg1 is NumVar))
throw new CalcException("Неверные типы операндов");
return (arg1.Clone() as VarBase);
}
public override VarBase Perform(ArgList al)
{
if (al.Count != ReqCount)
throw new OtherException("Invalid argument list");
return new RealVar(Math.PI);
}
public override VarBase Perform(ArgList al)
{
if (al.Count != ReqCount)
throw new OtherException("Invalid argument list");
al.Reset();
VarBase arg1 = al.Get();
VarBase arg2 = al.Get();
VarBase arg3 = al.Get();
if(!arg1.IsSingle())
throw new CalcException("Значение условия не может быть массивом");
if((arg1 as SingleVar).ToBool())
return (arg2.Clone() as VarBase);
else
return (arg3.Clone() as VarBase);
}
public override VarBase Perform(ArgList al)
{
if(al.Count!=ReqCount)
throw new OtherException("Invalid argument list");
return new RealVar(m_random.NextDouble());
}
public abstract VarBase Perform(ArgList al);
public override VarBase Perform(ArgList al)
{
if (al.Count != ReqCount)
throw new OtherException("Invalid argument list");
al.Reset();
VarBase arg1 = al.Get();
if (!arg1.IsArray())
throw new CalcException("Неправильные аргументы функции");
return new IntVar((arg1 as ArrayVar).GetSize());
}
public override VarBase Perform(ArgList al)
{
if (al.Count != ReqCount)
throw new OtherException("Invalid argument list");
al.Reset();
VarBase arg1 = al.Get();
VarBase arg2 = al.Get();
if (!(arg1.IsNum()&&arg2.IsNum()))
throw new CalcException("Неправильные аргументы функции");
try {
return new RealVar(
Math.Log(
(arg1 as NumVar).ToDouble(),
(arg2 as NumVar).ToDouble()
)
);
}
catch {
throw new CalcException("Ошибка в вычислениях");
}
}
public override VarBase Perform(ArgList al)
{
if (al.Count != ReqCount)
throw new OtherException("Invalid argument list");
al.Reset();
VarBase arg1 = al.Get();
VarBase arg2 = al.Get();
if (!(arg1.IsString()&&arg2.IsString()))
throw new CalcException("Неправильные аргументы функции");
int res = (arg1 as StringVar).Val.IndexOf((arg2 as StringVar).Val);
return new IntVar(res);
}
public override VarBase Perform(ArgList al)
{
if (al.Count != ReqCount)
throw new OtherException("Invalid argument list");
al.Reset();
VarBase arg1 = al.Get();
if(!arg1.IsSingle())
throw new CalcException("Неверные типы операндов");
return (arg1 as SingleVar).not();
}
public override VarBase Perform(ArgList al)
{
if (al.Count != ReqCount)
throw new OtherException("Invalid argument list");
al.Reset();
VarBase arg1 = al.Get();
VarBase arg2 = al.Get();
VarBase arg3 = al.Get();
if(!(arg1.IsString()&&arg2.IsInt()&&arg3.IsInt()))
throw new CalcException("Неверные типы операндов");
string str = (arg1 as StringVar).Val;
int b = (arg2 as IntVar).Val;
int l = (arg3 as IntVar).Val;
if ((b < 0) || (l < 0))
throw new CalcException("Неправильные аргументы функции");
int sl = str.Length;
if (b >= sl)
return new StringVar("");
if (sl - b < l)
l = sl - b;
return new StringVar(str.Substring(b, l));
}
//****************************************************************************************************
public VarBase Perform(ArgList al) {
Namespace ns = new Namespace(InterprEnvironment.Instance.CurrentNamespace);
ns["result"] = new IntVar(0);
int argc = m_args.Count;
if (al.Count != argc)
throw new CalcException("Ќеверное число параметров");
al.Reset();
for (int i = 0; i < argc; i++) {
ns[m_args[i] as System.String] = al.Get();
}
InterprEnvironment.Instance.CurrentNamespace = ns;
Moment moment = new Moment(this);
if (m_count > 1) {
try {
moment.Run();
}
catch (SyntaxErrorException ex) {
throw ex;
}
catch (CalcException ex) {
throw new CalcException("ќшибка в функции " + m_name + "[] в строке " + (moment.Pos + 1) + " : " + ex.Message);
}
}
VarBase res = ns["result"];
InterprEnvironment.Instance.CurrentNamespace = ns.PreviousNamespace;
if (res == null)
throw new CalcException("ќшибка в функции " + m_name + "[] : переменна¤ result не определена на момент выхода");
return res;
}
public override VarBase Perform(ArgList al)
{
if (al.Count != ReqCount)
throw new OtherException("Invalid argument list");
al.Reset();
VarBase arg1 = al.Get();
if (arg1.IsArray())
throw new CalcException("Ошибка преобразования");
if(arg1.IsString()) {
try {
int i = System.Convert.ToInt32((arg1 as StringVar).Val);
return new IntVar(i);
}
catch {
throw new CalcException("Ошибка преобразования");
}
}
else if (arg1.IsReal()) {
return new IntVar(System.Convert.ToInt32((arg1 as RealVar).Val));
}
else if (arg1.IsInt()) {
return (arg1.Clone() as VarBase);
}
else
return null;
}