public override object VisitUnaryOperatorExpression(UnaryOperatorExpression unaryOperatorExpression, object data)
{
CodeExpression var;
CodeAssignStatement assign;
switch (unaryOperatorExpression.Op) {
case UnaryOperatorType.Minus:
if (unaryOperatorExpression.Expression is PrimitiveExpression) {
PrimitiveExpression expression = (PrimitiveExpression)unaryOperatorExpression.Expression;
if (expression.Value is int) {
return new CodePrimitiveExpression(- (int)expression.Value);
}
if (expression.Value is System.UInt32 || expression.Value is System.UInt16) {
return new CodePrimitiveExpression(Int32.Parse("-" + expression.StringValue));
}
if (expression.Value is long) {
return new CodePrimitiveExpression(- (long)expression.Value);
}
if (expression.Value is double) {
return new CodePrimitiveExpression(- (double)expression.Value);
}
if (expression.Value is float) {
return new CodePrimitiveExpression(- (float)expression.Value);
}
}
return new CodeBinaryOperatorExpression(new CodePrimitiveExpression(0),
CodeBinaryOperatorType.Subtract,
(CodeExpression)unaryOperatorExpression.Expression.AcceptVisitor(this, data));
case UnaryOperatorType.Plus:
return unaryOperatorExpression.Expression.AcceptVisitor(this, data);
case UnaryOperatorType.PostIncrement:
// emulate i++, with i = i + 1
var = (CodeExpression)unaryOperatorExpression.Expression.AcceptVisitor(this, data);
assign = new CodeAssignStatement(var,
new CodeBinaryOperatorExpression(var,
CodeBinaryOperatorType.Add,
new CodePrimitiveExpression(1)));
AddStmt(assign);
return assign;
//return new CodeAssignStatement(var,
// new CodeBinaryOperatorExpression(var,
// CodeBinaryOperatorType.Add,
// new CodePrimitiveExpression(1)));
// RG: needs to return an Expression - Not a Statement
//return new CodeBinaryOperatorExpression(var,
// CodeBinaryOperatorType.Assign,
// new CodeBinaryOperatorExpression(var,
// CodeBinaryOperatorType.Add,
// new CodePrimitiveExpression(1)));
case UnaryOperatorType.PostDecrement:
// emulate i--, with i = i - 1
var = (CodeExpression)unaryOperatorExpression.Expression.AcceptVisitor(this, data);
assign = new CodeAssignStatement(var,
new CodeBinaryOperatorExpression(var,
CodeBinaryOperatorType.Subtract,
new CodePrimitiveExpression(1)));
AddStmt(assign);
return assign;
//return new CodeAssignStatement(var,
// new CodeBinaryOperatorExpression(var,
// CodeBinaryOperatorType.Subtract,
// new CodePrimitiveExpression(1)));
// RG: needs to return an Expression - Not a Statement
//return new CodeBinaryOperatorExpression(var,
// CodeBinaryOperatorType.Assign,
// new CodeBinaryOperatorExpression(var,
// CodeBinaryOperatorType.Subtract,
// new CodePrimitiveExpression(1)));
case UnaryOperatorType.Decrement:
// emulate --i, with i = i - 1
var = (CodeExpression)unaryOperatorExpression.Expression.AcceptVisitor(this, data);
assign = new CodeAssignStatement(var,
new CodeBinaryOperatorExpression(var,
CodeBinaryOperatorType.Subtract,
new CodePrimitiveExpression(1)));
AddStmt(assign);
return assign;
//return new CodeAssignStatement(var,
// new CodeBinaryOperatorExpression(var,
// CodeBinaryOperatorType.Subtract,
// new CodePrimitiveExpression(1)));
//return new CodeBinaryOperatorExpression(var,
// CodeBinaryOperatorType.Assign,
// new CodeBinaryOperatorExpression(var,
// CodeBinaryOperatorType.Subtract,
// new CodePrimitiveExpression(1)));
case UnaryOperatorType.Increment:
// emulate ++i, with i = i + 1
var = (CodeExpression)unaryOperatorExpression.Expression.AcceptVisitor(this, data);
assign = new CodeAssignStatement(var,
new CodeBinaryOperatorExpression(var,
CodeBinaryOperatorType.Add,
new CodePrimitiveExpression(1)));
AddStmt(assign);
return assign;
//return new CodeAssignStatement(var,
// new CodeBinaryOperatorExpression(var,
// CodeBinaryOperatorType.Add,
// new CodePrimitiveExpression(1)));
//return new CodeBinaryOperatorExpression(var,
// CodeBinaryOperatorType.Assign,
// new CodeBinaryOperatorExpression(var,
// CodeBinaryOperatorType.Add,
// new CodePrimitiveExpression(1)));
// RG:
case UnaryOperatorType.Not:
// emulate !a with a == false
var = (CodeExpression)unaryOperatorExpression.Expression.AcceptVisitor(this, data);
CodeBinaryOperatorExpression cboe = var as CodeBinaryOperatorExpression;
if (cboe != null && cboe.Operator == CodeBinaryOperatorType.IdentityEquality) {
return new CodeBinaryOperatorExpression(cboe.Left, CodeBinaryOperatorType.IdentityInequality, cboe.Right);
} else {
return new CodeBinaryOperatorExpression(var,CodeBinaryOperatorType.ValueEquality, new CodePrimitiveExpression(false));
}
default:
throw new NotSupportedException("CodeDom does not support Unary Operators");
}
}
public override sealed object VisitUnaryOperatorExpression(UnaryOperatorExpression unaryOperatorExpression, object data)
{
this.BeginVisit(unaryOperatorExpression);
object result = this.TrackedVisitUnaryOperatorExpression(unaryOperatorExpression, data);
this.EndVisit(unaryOperatorExpression);
return result;
}
public virtual object TrackedVisitUnaryOperatorExpression(UnaryOperatorExpression unaryOperatorExpression, object data)
{
return base.VisitUnaryOperatorExpression(unaryOperatorExpression, data);
}
public virtual object VisitUnaryOperatorExpression(UnaryOperatorExpression unaryOperatorExpression, object data)
{
Debug.Assert((unaryOperatorExpression != null));
Debug.Assert((unaryOperatorExpression.Expression != null));
return unaryOperatorExpression.Expression.AcceptVisitor(this, data);
}
public virtual object VisitUnaryOperatorExpression(UnaryOperatorExpression unaryOperatorExpression, object data)
{
throw new global::System.NotImplementedException("UnaryOperatorExpression");
}
void UnaryExpr(out Expression uExpr)
{
Expression expr;
UnaryOperatorType uop = UnaryOperatorType.None;
Location startLocation = la.Location;
bool isUOp = false;
while (la.kind == 30 || la.kind == 31 || la.kind == 34) {
if (la.kind == 31) {
Get();
uop = UnaryOperatorType.Plus; isUOp = true;
} else if (la.kind == 30) {
Get();
uop = UnaryOperatorType.Minus; isUOp = true;
} else {
Get();
uop = UnaryOperatorType.Dereference; isUOp = true;
}
}
ExponentiationExpr(out expr);
if (isUOp) {
uExpr = new UnaryOperatorExpression(expr, uop) { StartLocation = startLocation, EndLocation = t.EndLocation };
} else {
uExpr = expr;
}
}
void NotExpr(out Expression outExpr)
{
UnaryOperatorType uop = UnaryOperatorType.None;
while (la.kind == 164) {
Get();
uop = UnaryOperatorType.Not;
}
ComparisonExpr(out outExpr);
if (uop != UnaryOperatorType.None)
outExpr = new UnaryOperatorExpression(outExpr, uop);
}
public virtual object VisitUnaryOperatorExpression(UnaryOperatorExpression unaryOperatorExpression, object data)
{
Debug.Assert((unaryOperatorExpression != null));
Debug.Assert((unaryOperatorExpression.Expression != null));
nodeStack.Push(unaryOperatorExpression.Expression);
unaryOperatorExpression.Expression.AcceptVisitor(this, data);
unaryOperatorExpression.Expression = ((Expression)(nodeStack.Pop()));
return null;
}