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List: pykde
Subject: translating linked list with SIP
From: Marian Thomsen <marian.th () outlook ! de>
Date: 2021-02-25 12:59:14
Message-ID: AM0PR0502MB3764D717ED47722C2BABBC1D96CE0 () AM0PR0502MB3764 ! eurprd05 ! prod ! outlook ! com
[Download RAW message or body]
Hello,
I'm having difficulties translating linked list from given c++ API to pytho=
n.
I have a struct (DataType) holding some data (const unsigned char* data) an=
d the size of this data. Then I have a struct ListNode that has a void* dat=
a, that should point to a DataTypeObj.
Where I'm stuck:
DataType and ListNode can be translated with SIP, but I suspect something g=
oes wrong when passing the address of dataTypeObj to listNodeObj.data.
The address of dataTypeObj in hex format is the address the debugger shows =
me, therefore the ID should be right.
But the content is not. dataTypeObj.size accessed from listNodeObj is garba=
ge.
This is my header file:
typedef struct ListNode {
void* data;
struct ListNode *next;
struct ListNode *prev;
}ListNode;
typedef struct DataType {
const unsigned char *data;
int numocts;
}DataType;
// to debug
void displayDataType(DataType &dataType, void *dataTypePtr);
void displayListNode(ListNode &listNode);
and this is my .sip file:
struct ListNode {
%TypeHeaderCode
#include <llist.h>
%End
void *data;
struct ListNode *next;
struct ListNode *prev;
} ;
struct DataType {
%TypeHeaderCode
#include <llist.h>
%End
const unsigned char *data;
int numocts;
} ;
// to debug
void displayDataType(DataType &dataType, void *dataTypePtr);
void displayListNode(ListNode &listNode);
Does someone have and idea?
Thanks in advance!
M.T.
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<div>Hello, </div>
<div><br>
</div>
<div>I'm having difficulties translating linked list from given c++ API to \
python.</div> <div><br>
</div>
<div>I have a struct (DataType) holding some data (const unsigned char* data) and the \
size of this data. Then I have a struct ListNode that has a void* data, that should \
point to a DataTypeObj.</div> <div><br>
</div>
<div>Where I'm stuck:</div>
<div>DataType and ListNode can be translated with SIP, but I suspect something goes \
wrong when passing the address of dataTypeObj to listNodeObj.data.</div> <div>The \
address of dataTypeObj in hex format is the address the debugger shows me, therefore \
the ID should be right.</div> <div>But the content is not. dataTypeObj.size accessed \
from listNodeObj is garbage.</div> <div><br>
</div>
<div>This is my header file:</div>
<div>
<pre style="background-color:#ffffff; color:#080808; font-family:'JetBrains \
Mono',monospace; font-size:9.8pt"><span style="color:#0033b3">typedef struct \
</span><span style="color:#008080">ListNode </span>{<br><br> <span \
style="color:#0033b3">void</span>* <span style="color:#660e7a">data</span>;<br> \
<span style="color:#0033b3">struct </span><span style="color:#008080">ListNode \
</span>*<span style="color:#660e7a">next</span>;<br> <span \
style="color:#0033b3">struct </span><span style="color:#008080">ListNode \
</span>*<span style="color:#660e7a">prev</span>;<br>}<span \
style="color:#371f80">ListNode</span>;<br><br><br><span style="color:#0033b3">typedef \
struct </span><span style="color:#008080">DataType </span>{<span \
style="color:#8c8c8c; font-style:italic"><br></span><span style="color:#8c8c8c; \
font-style:italic"><br></span><span style="color:#8c8c8c; font-style:italic"> \
</span><span style="color:#0033b3">const unsigned char </span>*<span \
style="color:#660e7a">data</span>;<br> <span style="color:#0033b3">int \
</span><span style="color:#660e7a">numocts</span>;<br>}<span \
style="color:#371f80">DataType</span>;<br><br><span style="color:#8c8c8c; \
font-style:italic">// to debug<br></span><span style="color:#0033b3">void \
</span><span style="color:#00627a">displayDataType</span>(<span \
style="color:#371f80">DataType </span>&dataType, <span style="color:#0033b3">void \
</span>*dataTypePtr);<br><span style="color:#0033b3">void </span><span \
style="color:#00627a">displayListNode</span>(<span style="color:#371f80">ListNode \
</span>&listNode);</pre> <br>
</div>
<div><br>
</div>
<div>and this is my .sip file:</div>
<div>
<pre style="background-color:#ffffff; color:#080808; font-family:'JetBrains \
Mono',monospace; font-size:9.8pt"><span style="color:#0033b3">struct </span>ListNode \
{<br><br>%TypeHeaderCode<br><span style="color:#9e880d">#include </span><span \
style="color:#067d17"><llist.h><br></span>%End<br><br> <span \
style="color:#0033b3">void </span>*data;<br> <span \
style="color:#0033b3">struct </span>ListNode *next;<br> <span \
style="color:#0033b3">struct </span>ListNode *prev;<br>} ;<br><br><br><span \
style="color:#0033b3">struct </span><span style="color:#008080">DataType \
</span>{<span style="color:#8c8c8c; font-style:italic"><br></span><span \
style="color:#8c8c8c; font-style:italic"><br></span>%TypeHeaderCode<br><span \
style="color:#9e880d">#include </span><span \
style="color:#067d17"><llist.h><br></span>%End<br><br> <span \
style="color:#0033b3">const unsigned char </span>*data;<br> <span \
style="color:#0033b3">int </span><span \
style="color:#660e7a">numocts</span>;<br>} ;<br><br><span style="color:#8c8c8c; \
font-style:italic">// to debug<br></span><span style="color:#0033b3">void \
</span><span style="color:#00627a">displayDataType</span>(<span \
style="color:#008080">DataType </span>&dataType, <span style="color:#0033b3">void \
</span>*dataTypePtr);<br><span style="color:#0033b3">void </span><span \
style="color:#00627a">displayListNode</span>(ListNode &listNode);</pre> <br>
</div>
<div><br>
</div>
<div>Does someone have and idea?</div>
<div><br>
</div>
<div>Thanks in advance!</div>
<div><br>
</div>
<div>M.T.<br>
</div>
</body>
</html>
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