Re: Three Address Code Implementation - C# Discussion Boards

Re: Declare a pointer array and assign it in a DLL

1-Apr-08 8:18

baranils wrote:
I'm already using different function of that dll without any problem.

Ok, good luck

led mike

baranils1-Apr-08 10:04

baranils

1-Apr-08 10:04

Thank you

But your comments are not very usefull

This is how I do it in C

char **xptr;  // declaration of a char * array (no assignation)<br />
bctaGetName (hBcta, id, &xptr);  // give the adress of array as parameter

// the ddl function will assign his own buffer to the adress so I can now read xptr[0],[1] etc...

// The question is HOW to do the same in Csharp (I can not declare a pointer to IntPtr) and if I give the ref of an IntPtr array I need to assign the Array before the call and that array will be lost into the call so only the first element will be usable !

Re: Declare a pointer array and assign it in a DLL

baranils1-Apr-08 12:31

baranils

1-Apr-08 12:31

I got it !!

Using pointer and unsafe !

static public unsafe extern int bctaGetName(IntPtr hBcta, UInt32 nAttID, out IntPtr** StrPtr);

unsafe static public int TestName()
{
char ch = (char)1;
IntPtr hBcta = (IntPtr)0;
UInt32 attrId = 1039;
int status;

IntPtr** StrPtr;
Routing.bctaOpen(ref hBcta, Environ.RoutingDataPath, ch);
attrId = 8967209;
status = bctaGetName(hBcta, attrId,out StrPtr);
string aa = Marshal.PtrToStringAnsi((IntPtr)StrPtr[0]);

Routing.bctaClose(hBcta);
return 0;
}

Three Address Code Implementation

Ayo Awe1-Apr-08 5:49

Ayo Awe

1-Apr-08 5:49

I have a programming assignment:

Program to generate Three Address Code Implementation( Quadruple & Triple) of a Complete Program.
Languages: C# or Java

led mike1-Apr-08 6:15

1-Apr-08 6:15

Ayo Awe wrote:
I have a programming assignment:

Congratulations and good luck Beer | [beer]

led mike

User 66581-Apr-08 6:57

User 6658

1-Apr-08 6:57

Have Fun!

modified 12-Sep-18 21:01pm.

Roger Alsing1-Apr-08 7:40

Roger Alsing

1-Apr-08 7:40

I need that to.
Please send me the code, its urgent..

Blog: http://www.rogeralsing.com
Projects: http://www.puzzleframework.com

Guffa1-Apr-08 9:32

Guffa

1-Apr-08 9:32

As you are posting here, and don't ask any specific question about the implementation, I assume that you just don't understand the assignment?

Don't you have any more information at all other than the one that you have given in your question?

If your google is broken, here's some basic information about the three address code concept:

Wikipedia: Three address code[^]

Despite everything, the person most likely to be fooling you next is yourself.

wtf?

damianrda1-Apr-08 4:51

damianrda

1-Apr-08 4:51

For some reason DateTime.DaysInMonth(2008, 4) returns 31, yet DateTime.Parse("2008-04-31") yields in a FormatException.. am i missing something here? or is this some sort of bug.

Not Active1-Apr-08 5:28

Not Active

1-Apr-08 5:28

damianrda wrote:
am i missing something here?

Yeah, how to create a subject line that is meaningful and descriptive.

only two letters away from being an asset

Stu Richardson1-Apr-08 5:33

Stu Richardson

1-Apr-08 5:33

Running the line of code you just mentioned returned 30

<br />
MessageBox.Show(DateTime.DaysInMonth(2008, 4).ToString());<br />
<code><br />
<br />
Sorry not much help there but I just thought id give you the result of my test. Very strange that it is returning 31 - it doesnt seem possible.

Andrew Rissing1-Apr-08 5:36

Andrew Rissing

1-Apr-08 5:36

Yeah, I assumed he fat fingered the date and meant March, but if you're talking about April - yeah...that's a problem ;D

Andrew Rissing1-Apr-08 5:33

Andrew Rissing

1-Apr-08 5:33

Aside from the bad subject line, I'd say your problem is that its parsing your date assuming a YYYY-DD-MM format.

led mike1-Apr-08 6:04

1-Apr-08 6:04

damianrda wrote:
am i missing something here?

Yes what Mark said and the fact that those two methods you posted have nothing to do with each other so your post is like saying, for some reason you can eat potatoes yet jumping off a building will hurt you.

led mike

Cast an object into a specific type without knowing what type the object is

Gareth H1-Apr-08 10:32

Gareth H

1-Apr-08 10:32

led mike,

How tall is this building everyones jumping off?, I hope its not too big..

Regards,
Gareth.

arnold_w1-Apr-08 3:38

arnold_w

1-Apr-08 3:38

I want a method to return different data types or classes. For example, sometimes I want the method to return an integer and sometimes I want it to return a string. I can do this by letting the method return an object and then the calling function has to cast the object into the appropriate type. Can I somehow make the calling function automatically find out which class or types it belongs to and "cast itself" into the appropriate type? Basically, this is what I want to do:

object myObject = myMethod(); // Can return an int or a string, casted into an object
MessageBox.Show("" + (myObject.GetType()) myObject); // Should work for both int:s and string:s

I want the expression

(myObject.GetType())

to be interpreted as a cast. How can I accomplish what I want?

Note: I've simplied the problem in order to make it easy to understand. Using ToString won't solve my real problem.

Re: Cast an object into a specific type without knowing what type the object is

Simon P Stevens1-Apr-08 4:03

Simon P Stevens

1-Apr-08 4:03

That kinda defeats the point of a strongly typed language. why would you ever want to do that?

(As far as I'm aware a dynamic cast like that isn't possible. you wouldn't know at compile time what type of object it was, so all it could be assigned to would be an Object type, so you'd instantly lose the cast Feel free to correct me if anybody knows better)

You'll probably find your problem is better solved by redesigning the class hierarchy your using, or using Generics instead.

Post a bit more detail so I can try to understand why you need to do this.

Simon

Re: Cast an object into a specific type without knowing what type the object is

laserbaronen1-Apr-08 4:22

laserbaronen

1-Apr-08 4:22

if you know it can be either string or int, you can always try

if (myObject is string)
    SlayFourInnocentSheep( (string) myObject );
else if(myObject is int)
    MessageBox.Show("It is an int!");

betonglasermur.FeedDwarf(pur_is, 17);
ProcessStartupInfo.AintNotCreateNoWindow = (false && !true) != (true || false) ? false == true ? true : false : (true != false && false);

Morgonen är tröttmans mecka

Re: Cast an object into a specific type without knowing what type the object is

led mike1-Apr-08 4:40