public void Visit(UnaryExpression expression)
{
switch (expression.Type)
{
case UnaryExpressionType.TypeOf:
Builder.Append("typeof ");
break;
case UnaryExpressionType.New:
Builder.Append("new ");
break;
case UnaryExpressionType.Not:
Builder.Append("!");
break;
case UnaryExpressionType.Negate:
Builder.Append("-");
break;
case UnaryExpressionType.Positive:
Builder.Append("+");
break;
case UnaryExpressionType.PrefixPlusPlus:
Builder.Append("++");
break;
case UnaryExpressionType.PrefixMinusMinus:
Builder.Append("--");
break;
case UnaryExpressionType.Delete:
Builder.Append("delete ");
break;
}
expression.Expression.Accept(this);
switch (expression.Type)
{
case UnaryExpressionType.PostfixPlusPlus:
Builder.Append("++");
break;
case UnaryExpressionType.PostfixMinusMinus:
Builder.Append("--");
break;
//case UnaryExpressionType.Void:
//case UnaryExpressionType.Inv:
//case UnaryExpressionType.Unknown:
default:
throw new ArgumentOutOfRangeException();
}
}
public void Visit(UnaryExpression expression)
{
MemberExpression member;
switch (expression.Type)
{
case UnaryExpressionType.TypeOf:
expression.Expression.Accept(this);
Result = Global.StringClass.New(Result.Class.ToLower());
break;
case UnaryExpressionType.Not:
expression.Expression.Accept(this);
Result = Global.BooleanClass.New(!Result.ToBoolean());
break;
case UnaryExpressionType.Negate:
expression.Expression.Accept(this);
Result = Global.NumberClass.New(-Result.ToNumber());
break;
case UnaryExpressionType.Positive:
expression.Expression.Accept(this);
Result = Global.NumberClass.New(+Result.ToNumber());
break;
case UnaryExpressionType.PostfixPlusPlus:
expression.Expression.Accept(this);
JsInstance temp = Result;
member = expression.Expression as MemberExpression ?? new MemberExpression(expression.Expression, null);
Assign(member, Global.NumberClass.New(temp.ToNumber() + 1));
Result = temp;
break;
case UnaryExpressionType.PostfixMinusMinus:
expression.Expression.Accept(this);
temp = Result;
member = expression.Expression as MemberExpression ?? new MemberExpression(expression.Expression, null);
Assign(member, Global.NumberClass.New(temp.ToNumber() - 1));
Result = temp;
break;
case UnaryExpressionType.PrefixPlusPlus:
expression.Expression.Accept(this);
temp = Global.NumberClass.New(Result.ToNumber() + 1);
member = expression.Expression as MemberExpression ?? new MemberExpression(expression.Expression, null);
Assign(member, temp);
Result = temp;
break;
case UnaryExpressionType.PrefixMinusMinus:
expression.Expression.Accept(this);
temp = Global.NumberClass.New(Result.ToNumber() - 1);
member = expression.Expression as MemberExpression ?? new MemberExpression(expression.Expression, null);
Assign(member, temp);
Result = temp;
break;
case UnaryExpressionType.Delete:
member = expression.Expression as MemberExpression;
if (member == null)
throw new NotImplementedException("delete");
member.Previous.Accept(this);
temp = Result;
string propertyName = null;
if (member.Member is PropertyExpression)
propertyName = ((PropertyExpression)member.Member).Text;
if (member.Member is Indexer)
{
((Indexer)member.Member).Index.Accept(this);
propertyName = Result.ToString();
}
if (string.IsNullOrEmpty(propertyName))
throw new JsException(Global.TypeErrorClass.New());
try
{
((JsDictionaryObject)temp).Delete(propertyName);
}
catch (JintException e)
{
throw new JsException(Global.TypeErrorClass.New());
}
Result = temp;
break;
case UnaryExpressionType.Void:
throw new NotImplementedException("void");
case UnaryExpressionType.Inv:
expression.Expression.Accept(this);
Result = Global.NumberClass.New(~Convert.ToUInt64(Result.ToNumber()));
break;
}
}
public void Visit(UnaryExpression expression)
{
MemberExpression member;
switch (expression.Type) {
case UnaryExpressionType.TypeOf:
expression.Expression.Accept(this);
if (Result == null)
Result = Global.StringClass.New(JsUndefined.Instance.Type);
else if (Result is JsNull)
Result = Global.StringClass.New(JsInstance.TYPE_OBJECT);
else if (Result is JsFunction)
Result = Global.StringClass.New(JsInstance.TYPEOF_FUNCTION);
else
Result = Global.StringClass.New(Result.Type);
break;
case UnaryExpressionType.Not:
expression.Expression.Accept(this);
EnsureIdentifierIsDefined(Result);
Result = Global.BooleanClass.New(!Result.ToBoolean());
break;
case UnaryExpressionType.Negate:
expression.Expression.Accept(this);
EnsureIdentifierIsDefined(Result);
Result = Global.NumberClass.New(-Result.ToNumber());
break;
case UnaryExpressionType.Positive:
expression.Expression.Accept(this);
EnsureIdentifierIsDefined(Result);
Result = Global.NumberClass.New(+Result.ToNumber());
break;
case UnaryExpressionType.PostfixPlusPlus:
expression.Expression.Accept(this);
EnsureIdentifierIsDefined(Result);
JsInstance value = Result;
member = expression.Expression as MemberExpression ?? new MemberExpression(expression.Expression, null);
Assign(member, Global.NumberClass.New(value.ToNumber() + 1));
Result = value;
break;
case UnaryExpressionType.PostfixMinusMinus:
expression.Expression.Accept(this);
EnsureIdentifierIsDefined(Result);
value = Result;
member = expression.Expression as MemberExpression ?? new MemberExpression(expression.Expression, null);
Assign(member, Global.NumberClass.New(value.ToNumber() - 1));
Result = value;
break;
case UnaryExpressionType.PrefixPlusPlus:
expression.Expression.Accept(this);
EnsureIdentifierIsDefined(Result);
value = Global.NumberClass.New(Result.ToNumber() + 1);
member = expression.Expression as MemberExpression ?? new MemberExpression(expression.Expression, null);
Assign(member, value);
break;
case UnaryExpressionType.PrefixMinusMinus:
expression.Expression.Accept(this);
EnsureIdentifierIsDefined(Result);
value = Global.NumberClass.New(Result.ToNumber() - 1);
member = expression.Expression as MemberExpression ?? new MemberExpression(expression.Expression, null);
Assign(member, value);
break;
case UnaryExpressionType.Delete:
member = expression.Expression as MemberExpression;
if (member == null)
throw new NotImplementedException("delete");
member.Previous.Accept(this);
EnsureIdentifierIsDefined(Result);
value = Result;
string propertyName = null;
if (member.Member is PropertyExpression)
propertyName = ((PropertyExpression)member.Member).Text;
if (member.Member is Indexer) {
((Indexer)member.Member).Index.Accept(this);
propertyName = Result.ToString();
}
if (string.IsNullOrEmpty(propertyName))
throw new JsException(Global.TypeErrorClass.New());
try {
((JsDictionaryObject)value).Delete(propertyName);
}
catch (JintException) {
throw new JsException(Global.TypeErrorClass.New());
}
Result = value;
break;
case UnaryExpressionType.Void:
expression.Expression.Accept(this);
Result = JsUndefined.Instance;
break;
case UnaryExpressionType.Inv:
expression.Expression.Accept(this);
EnsureIdentifierIsDefined(Result);
Result = Global.NumberClass.New(0 - Result.ToNumber() - 1);
break;
}
}
void Analyze(UnaryExpression Stmt)
{
SetCurrentLineAndCharNos(Stmt);
if (Stmt.Type == UnaryExpressionType.Not && Stmt.Expression == null)
{
if (JintStack.Count > 0)
{
if (JintStack[JintStack.Count - 1].State == JintState.MethodCallArgument)
{
JintStack.Add(new JintItem(Stmt.Source, JintState.MethodCallArgumentTaintPointer, this));
}
}
}
if (Stmt.Expression != null)
{
Analyze(Stmt.Expression);
}
}