private Node AndExpressionRest(Node node)
{
Node result;
if (lex.Token == Token.And)
{
lex.Next();
Node right = LogicalOrExpression();
result = new BinaryNode { Left = node, Operator = BinaryOperator.And, Right = right };
result = AndExpressionRest(result);
}
else
{
result = node;
}
return result;
}
public void Visit(BinaryNode node)
{
Debug.WriteLine("Visiting " + node.GetType().Name);
}
public void Visit(BinaryNode node)
{
Debug.Write("(");
node.Left.Accept(this);
Debug.Write(" " + node.Operator + " ");
node.Right.Accept(this);
Debug.Write(")");
}
private Node BooleanCompareExpressionExpressionRest(Node node)
{
Node result;
BinaryOperator op;
switch (lex.Token)
{
case Token.Less:
op = BinaryOperator.IsLess;
break;
case Token.Greater:
op = BinaryOperator.IsGreater;
break;
case Token.LessOrEqual:
op = BinaryOperator.IsLessOrEqual;
break;
case Token.GreaterOrEqual:
op = BinaryOperator.IsGreaterOrEqual;
break;
default:
op = BinaryOperator.Undefined;
break;
}
if (op != BinaryOperator.Undefined)
{
lex.Next();
Node right = TermExpression();
result = new BinaryNode { Left = node, Operator = op, Right = right };
result = BooleanCompareExpressionExpressionRest(result);
}
else
{
result = node;
}
return result;
}
private Node TermExpressionRest(Node node)
{
Node result;
BinaryOperator op = BinaryOperator.Undefined;
if (lex.Token == Token.Plus)
{
op = BinaryOperator.Add;
}
else if (lex.Token == Token.Minus)
{
op = BinaryOperator.Subtract;
}
if (op != BinaryOperator.Undefined)
{
lex.Next();
Node right = FactorExpression();
result = new BinaryNode { Left = node, Operator = op, Right = right };
result = TermExpressionRest(result);
}
else
{
result = node;
}
return result;
}
private Node MemberExpressionRest(Node node)
{
Node result;
if (lex.Token == Token.Dot)
{
lex.Next();
Node right = LateBindingIdentifierExpression();
result = new BinaryNode { Left = node, Operator = BinaryOperator.InvokeMember, Right = right };
result = MemberExpressionRest(result);
}
else
{
result = node;
}
return result;
}
private Node LogicalAndExpressionRest(Node node)
{
Node result;
if (lex.Token == Token.BitwiseAnd)
{
lex.Next();
Node right = BooleanEqualityExpression();
result = new BinaryNode { Left = node, Operator = BinaryOperator.BitwiseAnd, Right = right };
result = LogicalAndExpressionRest(result);
}
else
{
result = node;
}
return result;
}
private Node FactorExpressionRest(Node node)
{
Node result;
BinaryOperator op;
switch (lex.Token)
{
case Token.Multiply:
op = BinaryOperator.Multiply;
break;
case Token.Divide:
op = BinaryOperator.Divide;
break;
case Token.Modulus:
op = BinaryOperator.Modulus;
break;
case Token.Power:
op = BinaryOperator.Power;
break;
default:
op = BinaryOperator.Undefined;
break;
}
if (op != BinaryOperator.Undefined)
{
lex.Next();
Node right = NotExpression();
result = new BinaryNode { Left = node, Operator = op, Right = right };
result = FactorExpressionRest(result);
}
else
{
result = node;
}
return result;
}
private Node BooleanEqualityExpressionRest(Node node)
{
Node result;
BinaryOperator op = BinaryOperator.Undefined;
if (lex.Token == Token.Equal)
{
op = BinaryOperator.IsEqual;
}
else if (lex.Token == Token.NotEqual)
{
op = BinaryOperator.IsNotEqual;
}
if (op != BinaryOperator.Undefined)
{
lex.Next();
Node right = BooleanCompareExpression();
result = new BinaryNode { Left = node, Operator = op, Right = right };
result = BooleanEqualityExpressionRest(result);
}
else
{
result = node;
}
return result;
}
public void Visit(BinaryNode node)
{
node.Left.Accept(this);
node.Right.Accept(this);
switch (node.Operator)
{
case BinaryOperator.Or:
valueStack.Or();
break;
case BinaryOperator.And:
valueStack.And();
break;
case BinaryOperator.BitwiseOr:
valueStack.BitwiseOr();
break;
case BinaryOperator.BitwiseAnd:
valueStack.BitwiseAnd();
break;
case BinaryOperator.IsEqual:
valueStack.IsEqual();
break;
case BinaryOperator.IsNotEqual:
valueStack.IsNotEqual();
break;
case BinaryOperator.IsLess:
valueStack.IsLess();
break;
case BinaryOperator.IsGreater:
valueStack.IsGreater();
break;
case BinaryOperator.IsLessOrEqual:
valueStack.IsLessOrEqual();
break;
case BinaryOperator.IsGreaterOrEqual:
valueStack.IsGreaterOrEqual();
break;
case BinaryOperator.Add:
valueStack.Add();
break;
case BinaryOperator.Subtract:
valueStack.Subtract();
break;
case BinaryOperator.Multiply:
valueStack.Multiply();
break;
case BinaryOperator.Divide:
valueStack.Divide();
break;
case BinaryOperator.Modulus:
valueStack.Modulus();
break;
case BinaryOperator.Power:
valueStack.Power();
break;
case BinaryOperator.InvokeMember:
InvokeMember();
break;
default:
throw new NotImplementedException("Implementation mission for BinaryOperator." + node.Operator.ToString());
}
}