public TokenList(TokenList List)
{
for (TokenListNode node = List.First; node != null; node = node.Next)
{
Add(node.Value);
}
}
public LinkedList <Token> ToLinkedList()
{
var newList = new LinkedList <Token>();
for (TokenListNode node = first; node != null; node = node.Next)
{
newList.AddLast(node.Value);
}
return(newList);
}
public override List <Token> Tokenize()
{
var returnList = new List <Token>();
for (TokenListNode node = list.First; node != null; node = node.Next)
{
returnList.AddRange(((Value)node.Value).Tokenize());
}
return(returnList);
}
public void Add(Token Token)
{
if (empty)
{
last = new TokenListNode(Token);
first = last;
empty = false;
}
else
{
last.Next = new TokenListNode(Token);
TokenListNode temp = last;
last = last.Next;
last.Previous = temp;
}
}
public void Add(Token Token)
{
if (empty)
{
last = new TokenListNode(Token);
first = last;
empty = false;
}
else
{
last.Next = new TokenListNode(Token);
TokenListNode temp = last;
last = last.Next;
last.Previous = temp;
}
}
/// <summary>
/// Insert a new node between 2 other ones
/// </summary>
/// <param name="Node"></param>
/// <param name="Left"></param>
/// <param name="Right"></param>
public void Insert(TokenListNode Node, TokenListNode Left, TokenListNode Right)
{
if (Left != null)
Left.Next = Node;
else
{
first = Node;
}
Node.Next = Right;
Node.Previous = Left;
if (Right != null)
Right.Previous = Node;
else
{
last = Node;
}
}
/// <summary>
/// Insert a new node between 2 other ones
/// </summary>
/// <param name="Node"></param>
/// <param name="Left"></param>
/// <param name="Right"></param>
public void Insert(TokenListNode Node, TokenListNode Left, TokenListNode Right)
{
if (Left != null)
{
Left.Next = Node;
}
else
{
first = Node;
}
Node.Next = Right;
Node.Previous = Left;
if (Right != null)
{
Right.Previous = Node;
}
else
{
last = Node;
}
}
public static Value CreateValueFromExpression( TokenList List )
{
if ( List.First == null ) return new Array();
//Bracket pass
var startNode = new TokenListNode();
int parCount = 0;
for ( TokenListNode node = List.First ; node != null ; node = node.Next )
{
if ( node.Value is ParenthesisOpen )
{
if ( parCount == 0 )
{
startNode = node;
}
parCount++;
} else if ( node.Value is ParenthesisClosed )
{
parCount--;
if ( parCount == 0 )
{
var group = new TokenList();
for ( TokenListNode innerNode = startNode.Next ; innerNode != node ; innerNode = innerNode.Next )
{
group.Add( innerNode.Value );
}
Value val = CreateValueFromExpression( group );
List.Insert( new TokenListNode( val ), startNode.Previous, node.Next );
}
}
}
//Operator pass
for ( int i = 1 ; i <= Operators.LowestPrecedance ; ++i )
{
for ( TokenListNode node = List.First ; node != null ; node = node.Next )
{
if ( node.Value is Operator )
{
var oper = (Operator)node.Value;
OperatorType type = oper.Type;
if ( oper.Precedance == i )
{
var temp = new TokenList();
TokenListNode left = new TokenListNode(), right = new TokenListNode();
if ( oper is DotOperator ) type = OperatorType.InfixBinary;
switch ( type ) //Using the operators type, determines which tokens to make a value from
{
case OperatorType.InfixBinary: //A + B
temp.Add( node.Previous.Value );
temp.Add( node.Value );
temp.Add( node.Next.Value );
left = node.Previous.Previous;
right = node.Next.Next;
break;
case OperatorType.PrefixBinary: //+ A B
temp.Add( node.Next.Value );
temp.Add( node.Value );
temp.Add( node.Next.Next.Value );
left = node.Previous;
right = node.Next.Next.Next;
break;
case OperatorType.PrefixUnary: //+ A
temp.Add( node.Value );
temp.Add( node.Next.Value );
left = node.Previous;
right = node.Next.Next;
break;
case OperatorType.SufixBinary: //A B +
temp.Add( node.Previous.Previous.Value );
temp.Add( node.Value );
temp.Add( node.Previous.Value );
left = node.Previous.Previous.Previous;
right = node.Next;
break;
case OperatorType.SufixUnary: //A +
temp.Add( node.Value );
temp.Add( node.Previous.Value );
left = node.Previous.Previous;
right = node.Next;
break;
}
Value val = MakeValue( temp, ( type == OperatorType.PrefixUnary || type == OperatorType.SufixUnary ) );
List.Insert( new TokenListNode( val ), left, right );
}
}
}
}
if ( List.First.Next != null )
{
return new ExpressionSequence( List );
}
return (Value)List.First.Value;
}
public static Value CreateValueFromExpression(TokenList List)
{
if (List.First == null)
{
return(new Array());
}
//Bracket pass
var startNode = new TokenListNode();
int parCount = 0;
for (TokenListNode node = List.First; node != null; node = node.Next)
{
if (node.Value is ParenthesisOpen)
{
if (parCount == 0)
{
startNode = node;
}
parCount++;
}
else if (node.Value is ParenthesisClosed)
{
parCount--;
if (parCount == 0)
{
var group = new TokenList();
for (TokenListNode innerNode = startNode.Next; innerNode != node; innerNode = innerNode.Next)
{
group.Add(innerNode.Value);
}
Value val = CreateValueFromExpression(group);
List.Insert(new TokenListNode(val), startNode.Previous, node.Next);
}
}
}
//Operator pass
for (int i = 1; i <= Operators.LowestPrecedance; ++i)
{
for (TokenListNode node = List.First; node != null; node = node.Next)
{
if (node.Value is Operator)
{
var oper = (Operator)node.Value;
OperatorType type = oper.Type;
if (oper.Precedance == i)
{
var temp = new TokenList();
TokenListNode left = new TokenListNode(), right = new TokenListNode();
if (oper is DotOperator)
{
type = OperatorType.InfixBinary;
}
switch (type) //Using the operators type, determines which tokens to make a value from
{
case OperatorType.InfixBinary: //A + B
temp.Add(node.Previous.Value);
temp.Add(node.Value);
temp.Add(node.Next.Value);
left = node.Previous.Previous;
right = node.Next.Next;
break;
case OperatorType.PrefixBinary: //+ A B
temp.Add(node.Next.Value);
temp.Add(node.Value);
temp.Add(node.Next.Next.Value);
left = node.Previous;
right = node.Next.Next.Next;
break;
case OperatorType.PrefixUnary: //+ A
temp.Add(node.Value);
temp.Add(node.Next.Value);
left = node.Previous;
right = node.Next.Next;
break;
case OperatorType.SufixBinary: //A B +
temp.Add(node.Previous.Previous.Value);
temp.Add(node.Value);
temp.Add(node.Previous.Value);
left = node.Previous.Previous.Previous;
right = node.Next;
break;
case OperatorType.SufixUnary: //A +
temp.Add(node.Value);
temp.Add(node.Previous.Value);
left = node.Previous.Previous;
right = node.Next;
break;
}
Value val = MakeValue(temp, (type == OperatorType.PrefixUnary || type == OperatorType.SufixUnary));
List.Insert(new TokenListNode(val), left, right);
}
}
}
}
if (List.First.Next != null)
{
return(new ExpressionSequence(List));
}
return((Value)List.First.Value);
}
