ctually curious about this recently also, does FPC have local variable
RTTI? That would be useful to have actually. I know it exists for classes but
not sure about locals.
Regards,
Ryan Joseph
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d;
>
That is a clever solution but it’s basically a sneaky trick around the
compilers excessively strict typing. The programmer knows the correct type but
there’s no way to tell that to the for loop.
Regards,
Ryan Joseph
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contain the same list of functions.
So, how do I find the functions in a program module?
Regards,
Ryan Joseph
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I can
possible extend it to accommodate?
Regards,
Ryan Joseph
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ss and changing
the declarations. In fact this means using TFPList is not really a good idea at
all anymore unless you don’t plan to use for..in loops.
Regards,
Ryan Joseph
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to manually
change them all by hand to be things like:
function PyImport_ImportModule(module: pchar): PPyObject; cdecl;
Regards,
Ryan Joseph
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a work to add
the extra types in because the original code was Delphi.
var
Py_Initialize: procedure; cdecl;
begin
Py_Initialize := GetProcAddress(handle, 'Py_Initialize');
Regards,
Ryan Joseph
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fact didn’t we just have a big talk about
for loop iterators and how they can’t be type cast? I thought that was because
casting the left side value was illegal. Very confused now. ;)
Regards,
Ryan Joseph
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oop so casting just made sense to me from an efficiency standpoint.
Regards,
Ryan Joseph
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number as the generic
parameters.
What should be the rule here?
>
>
>> How does Delphi implicitly specialize this?
>
> DoThis(1,1,nil); // T and U become shortint
> DoThis('aa','aa',nil); // T and U become string
So Delphi seems to match by index so param 1 = generic param 1. With repeating
patterns this breaks downs but maybe it’s a special case if the function
parameter count matches the generic parameter count?
Regards,
Ryan Joseph
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s(msg: integer; param1: TObject;
> param2: TObject)
>// so we expect an incompatible type error
>DoThis(1, 1, TObject.Create);
> end.
That doesn’t make sense to me either so I need to study it. Both should fail
actually as I designed it (for now).
How does Delphi im
timpfuncspez15;
generic procedure DoThis(param1: T; param2: integer = 100);
begin
writeln(param1, ' = ', param2);
end;
begin
DoThis('hello');
end.
Regards,
Ryan Joseph
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> On Oct 6, 2019, at 5:03 PM, Ryan Joseph wrote:
>
>> On Oct 6, 2019, at 2:06 PM, Mattias Gaertner via fpc-pascal
>> wrote:
>>
>> 1.
>> FPC allows default params, Delphi does not. Nice.
>> I see no tests for this though, so maybe this was not on
And the following compiles, but fails on run, as T becomes an array
> instead of the element type:
> generic procedure Run(a: array of T); overload;
>
Good catch, that’s a bug.
var
a: array of integer;
begin
Run(a);
Regards,
Ryan Joseph
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(a: T): T; overload;
> begin end;
>
> generic function DoThis(a: T): U; overload;
> begin end;
>
> function DoThis(aInt : Integer) : Integer;
>
> begin
> end;
Regards,
Ryan Joseph
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arameter not in function parameter list. Not sure yet but something like
“DoThis can not infer specialization from parameter list”.
generic function DoThis(a: integer): T;
If there’s more let me know.
Regards,
Ryan Joseph
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egin
end;
// fails because the non-generic Run() will always be picked and the parameter
count will be wrong.
Run(1,1,1);
Regards,
Ryan Joseph
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wins right?
procedure Run(a:T; b: word);
procedure Run(a: word; b: T);
procedure Run(a: word; b: word);
Regards,
Ryan Joseph
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uld need to be made more resilient.
>
As a general matter could you explain the reasoning behind
resolve_generic_dummysym()?
Regards,
Ryan Joseph
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out this more later. Btw, the
overloading stuff is in try_implicit_specialization but maybe that
Regards,
Ryan Joseph
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11.1 and command line tools didn’t have any side effects at
least.
Regards,
Ryan Joseph
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My apologies, I sent this to the wrong list (it’s macOS related). Please
disregard.
Regards,
Ryan Joseph
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next block.
-1 if this is the last listing block.
end;
Regards,
Ryan Joseph
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ates.
>
Hmmm, I thought letting that dummy sym pass through would have lots of adverse
affects in various places. I’ll have to study this later in the debugger.
Regards,
Ryan Joseph
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cgi-bin/viewvc.cgi/trunk/packages/chm/src/itolitlsreader.pas?view=markup#l385.
> I have also updated via svn (r43158) and that came through good. It is
> busy building but no problems so far.
>
Thanks. I’ll download the sources again.
R
ng thread some months ago but I gave up).
Look at the changes page on Github and search for
m_implicit_function_specialization.
https://github.com/graemeg/freepascal/compare/master...genericptr:generic_implicit
Regards,
Ryan Joseph
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> On Oct 3, 2019, at 6:07 PM, Sven Barth via fpc-pascal
> wrote:
>
> A patch for it by Ryan Joseph exists (
> https://bugs.freepascal.org/view.php?id=35261 ), but I've not yet found the
> time to review it.
>
I’m eager to use this also but it’s been sitting there f
olumn 14
for pointer(entity) in entities do
begin
entity.Update;
entity.Draw(renderer);
renderer.PushBox(entity.GetHitBox, TRGBA.RedColor);
end;
3) {$i settings} will not find the file “settings.inc”. This is valid in FPC
but the parser seems to have other rules.
On Oct 12, 2019, at 6:43 PM, Michael Van Canneyt wrote:1) class operators for recordsEParserError: Expected "procedure" at token "operator" in file /Users/ryanjoseph/Developer/Projects/FPC/GLCanvas/GLCanvas.pas at line 115 column 7class operator TVertex3.= (constref a, b: TVertex3):
sting outside of the loop.
var
arr: specialize TFPGObjectList;
obj: TMyClass;
begin
arr := specialize TFPGObjectList.Create;
arr.Add(TObject.Create);
// Incompatible types: got "TObject" expected "TMyClass"
for obj in arr do
begin
end;
Regards,
;
type
TMyRecordA = record
class operator = (constref a, b: TMyRecordA): boolean;
end;
class operator TMyRecordA.= (constref a, b: TMyRecordA): boolean;
begin
result := (@a = @b);
end;
procedure DoThis;
type
TMyRecordB = record
private
x, y, z: integer;
end;
o I don't forget.
>
> I'll try to fix them ASAP.
I’m out of time today but I’m make some examples later. Where do you want me to
post them? Sorry I don’t get "sed s/bug/bugreport/“.
heres’ the list:
1) allow omission of extension for $include macro
2) record class operators
3) record se
not sure
exactly. It’s probably possible that it’s not always possible to know because
there are unresolved types so: a := clss.DoThis; maybe be a function call or
accessing a proeprty/member variable.
Regards,
Ryan Joseph
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n(TPasElement(element).Name, ‘’, TPasElement(element).DoSomething);
end;
Regards,
Ryan Joseph
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o keep the for-in loops as easy to use as before.
Regards,
Ryan Joseph
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ended" expected "LongInt"
fac:=Sqrt(Sqr(x) + Sqr(y));
if fac<>0.0 then begin
// Incompatible types: got "Single" expected "LongInt"
fac:=1.0/fac;
result.x:=x*fac;
result.y:=y*fac;
end else begin
result.x:=0;
result.y:=0;
end;
2;
begin
result.x := left.x - right.x;
result.y := left.y - right.y;
end;
class operator TVec2.- (left: TVec2; right: TScalar): TVec2;
begin
result.x := left.x - right;
result.y := left.y - right;
end;
begin
end.
Regards,
Ryan Joseph
___
> On Nov 2, 2019, at 11:06 AM, Cyrax via fpc-pascal
> wrote:
>
> You need to do a explicit typecasting.
>
> ...
> fac:=Sqrt(Sqr(TScalar(x)) + Sqr(TScalar(y)));
> ...
> fac:=1.0/TScalar(fac);
Doesn't work. Try running the example.
R
"TCocoaObject$1.T" is not supported for interaction with
the Objective-C and the blocks runtime.
m_obj: T;
function obj: T; message 'obj';
end;
function TCocoaObject.obj: T;
begin
result := m_obj;
end;
begin
end.
Regards,
Ryan Joseph
_
at, thanks.
https://bugs.freepascal.org/view.php?id=36285
Regards,
Ryan Joseph
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}
This is what I hinted in my post. Has anything like this been considered
before? It seems necessary to me but it looks like Sven had some fancy work
around using pointers. Either way the compile time directive would be faster
and avoid the conditional statements
with 3rd party IDE's.
Regards,
Ryan Joseph
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results but all I have to go on is the "context" which doesn't really
tell me what the result is how to filter it.
Regards,
Ryan Joseph
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ut of the ordinary so why does
it matter if it's generic or not? Maybe Jonas has a reason I don't know about.
Regards,
Ryan Joseph
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ge arrays or collections of strings" and also at the
top-right: Reference for unit "classes". There is even a "Description" section
which is pretty good to know.
Can you not get those back from the search results? Sorry if it's obvious but I
don'
Do cvars not allow external symbol names like functions do? With function I can
declare a name but for cvar I'm getting an error.
PyBaseString_Type:PPyTypeObject; cvar; external name 'somename';
Regards,
Ryan Joseph
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exception handling to have the
> exception appear to be raised somewhere else.
So what's missing then to be able make saving a stack frame to the heap and
then restoring it?
Regards,
Ryan Joseph
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> rejected.
Thanks I see now.
Btw just because I have your attention I made a bug report
(https://bugs.freepascal.org/view.php?id=36333) that's ObjC related in case you
didn't see it.
Regards,
Ryan Joseph
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functions like "memcpy"
would be present also. I used to same make command I did on Mac to build the
library but maybe I did something wrong on Linux.
Regards,
Ryan Joseph
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o this for static libraries on Linux? I'm getting
defined references for math functions like pow, cos etc.. and some pthread ones
also. There's probably more but how can I know?
Regards,
Ryan Joseph
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gt; b := CopyList(a) as TNodeObjectList;
> end.
>
> Can't tell right now from looking at it. Will need to test that later on.
>
Anyone else have any idea? Doesn't make any sense to me.
Regards,
Ryan Joseph
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only 5MB so I presume there were duplicate symbols that were ignored.
Regards,
Ryan Joseph
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Error: Invalid DLL XXX/python37.lib, Dos header invalid".
I see the compiler found the library but I may not have made the library
correctly. How can I know if this .lib is what I think it is?
Regards,
Ryan Joseph
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quot;) which must be enabled by default in
> all modes except the Delphi ones.
So to get Delphi mode style generics in ObjFPC mode you need to disable the
modeswitch? That's kind of backwards from what mode switches usually do but it
makes sense. How do you even disable a mode switch?
that's low hanging fruit.
Regards,
Ryan Joseph
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> end.
>
> === code end ===
Found yet another internal compiler error trying your code:
https://bugs.freepascal.org/view.php?id=36388
The previous day was another internal compiler error with inline functions in
case you missed it. ;)
https://bugs.freepascal.org/view.php?id=36381
Regard
S$PMEMCHUNK_VAR$$QWORD + 42
frame #2: 0x000100020fdd Syndicate`SYSTEM_$$_SYSFREEMEM$POINTER$$QWORD
+ 109
frame #3: 0x00010001fe6f Syndicate`SYSTEM_$$_FREEMEM$POINTER$$QWORD + 15
Regards,
Ryan Joseph
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g any list type in the RTL? Actually I'd rather just
disable all the out of bounds errors because I need some performant which
isn't making more checks than need be. I want to use a heap-based list because
the it may need to grow later.
Thanks guys.
Regards,
R
uld be wrong.
Regards,
Ryan Joseph
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rfacedObjectList;
function CopyList (source: TFPSList): TFPSList;
begin
result := TFPSList(source.ClassType.Create);
result.Assign(source);
end;
var
a, b: TNodeObjectList;
begin
a := TNodeObjectList.Create;
// EListError: Incompatible item size in source list
behaviors to pascal and so I was wondering if we could
copy/restore the current stack pointer so that SetJmp and LongJmp would not
blow things up.
Regards,
Ryan Joseph
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https
opy the stack with the pointer and restore it later. Is that not how it works?
Regards,
Ryan Joseph
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messing things up. For example:
https://docs.getlazarus.org/?method=codesearch=xml=List
notice all the tags that are breaking up the titles.
Regards,
Ryan Joseph
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r expected
// Internal error 2019112401
generic function CopyList(source: specialize FGL.TFPGObjectList):
specialize FGL.TFPGObjectList;
begin
end;
begin
end.
Regards,
Ryan Joseph
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code begin ===
>
> list := TList.Create;
> list.Count := 10;
> list[5] := someItem;
I was trying that but with capacity and not count. Thanks.
Regards,
Ryan Joseph
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ors" to objects but I was curious about the variant records because it
appears to be the only other thing from records that aren't in objects.
Regards,
Ryan Joseph
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out but this makes no sense whatsoever to me. If
the compiler team agrees I will personally make a mode switch or whatever is
permitted to accomplish this. :)
Regards,
Ryan Joseph
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ke sense?
Maybe what I mean to say is that there's a need for a delegation syntax that
functions like multiple inheritance and avoids the traps of deeply nested
single inheritance hierarchies. Does anyone else agree?
Regards,
Ryan Joseph
___
: TVec2i;
function GetTableSize: TVec2i;
property TableSize: TVec2i read GetTableSize;
end;
var
sheet: TSheet;
begin
// why isn't this an error?
sheet.x := 1;
end;
Regards,
Ryan Joseph
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edure Test(input: array of pointer);
begin
end;
var
list: array[0..10] of NSArray;
p: pointer;
begin
// no problem!
p := list[0];
// Incompatible type for arg no. 1: Got "Array[0..10] Of NSArray", expected
"{Open} Array Of Pointer"
Test(list);
end.
e property is read only? It's basically a no-op like it is now and
defeats the purpose of read-only properties. It also creates a nasty bug
because the programmer thinks they've written to something but they actually
didn't.
Can we consider changing this behavior?
Regards,
R
// Incompatible types: got "{Open} Array Of NSObject" expected
"NSFastEnumerationProtocol"
for obj in input do
;
end;
begin
end.
Regards,
Ryan Joseph
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something?
Regards,
Ryan Joseph
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> On Mar 5, 2020, at 2:24 PM, Ryan Joseph wrote:
>
> Can we consider changing this behavior?
from https://lists.freepascal.org/pipermail/fpc-pascal/2020-March/057434.html
On 05/03/2020 08:24, Ryan Joseph via fpc-pascal wrote:
>
Yes, it's a temporary variable but doesn't i
o or so but I guess it's still using RTL units from the trunk (the
trunk, 3.3.1 is from SVN). I'll try to clean and rebuild the actual trunk and
see if that helps.
Regards,
Ryan Joseph
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http
;
type
TClassName = class(IClassName2)
end;
procedure Pass(int: IClassName1);
begin
end;
var
c: TClassName;
begin
// Incompatible type for arg no. 1: Got "TClassName", expected "IClassName1"
Pass(c);
end.
Regards,
you want this you need to first
> cast the class to IClassName2, then the "interface inheritance" mechanism can
> take over.
>
Hmm, isn't that inconsistent given how classes work? if TClassName implements
IClassName2 then doesn't it also implement IClassName1 by defi
> On Jan 14, 2020, at 11:44 PM, Sven Barth via fpc-pascal
> wrote:
>
> Indeed. And yes, please file a bug.
>
https://bugs.freepascal.org/view.php?id=36584
Regards,
Ryan Joseph
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Is this a bug or intended behavior? I would think there should a type mismatch.
{$mode delphi}
program test;
type
TFooA = class
end;
type
TFooB = class
end;
type
TList = class
procedure Foo;
end;
procedure TList.Foo;
begin
end;
begin
end.
Regards,
Ryan Joseph
fix will probably encompass both of them.
Regards,
Ryan Joseph
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I need to override the main program function and then call back the main
program later. I know I can use -XM to set another function name besides "main"
but then how do I call back the original function "main" later?
Regards,
barely understand the problem myself.
Regards,
Ryan Joseph
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begin
writeln('called user main');
end.
The linker error I can't get past:
Undefined symbols for architecture x86_64:
"_main", referenced from:
start in crt1.10.5.o
(maybe you meant: _user_main)
Regards,
Ryan Joseph
___
> On Jan 2, 2020, at 2:57 PM, Ryan Joseph wrote:
>
> extern C_LINKAGE int SDL_main(int argc, char *argv[]);
>
> which they call from within the iOS event loop and that calls the programs
> main functions which was defined using -XMSDL_main
I still can't figure out how -XM
> On Jan 3, 2020, at 12:29 PM, Jonas Maebe wrote:
>
> So add 'cdecl; public;" to its declaration and definition.
Nice the demo program compiles now.
Regards,
Ryan Joseph
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> On Dec 23, 2019, at 7:57 PM, Ryan Joseph wrote:
>
> I never heard of "mixin" before but I'll study the wiki.
>
> I assume that the compiler team has decided multiple inheritance is a bad
> idea correct? Personally I don't have enough experience to know
common namespace. I'm happy
with any way to achieve that.
Regards,
Ryan Joseph
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ride;
end;
// TBase.TBrain_DoStuff is synthesized from TBrain.DoStuff
// and renamed to prevent name collisions
procedure TBase.TBrain_DoStuff;
begin
writeln('do something');
end;
procedure TBase.DoStuff;
begin
// inherited calls TBase.TBrain_DoStuff
inherited;
writeln('do more stuff');
end;
e implemented the same as inheritance and this would basically
just make them a different syntax for multiple inheritance. I don't think
that's what Sven had it mind and if he did why not just do proper multiple
inheritance using the existing syntax that interfaces uses?
Regards,
Ryan Jo
procedure Fight;
end;
type
TPhysics = record
x, y, z: float;
procedure Apply;
end;
type
TPerson = class
physics: TPhysics;
brain: TBrain;
end;
var
p: TPerson;
begin
p.brain.DoThis;
p.physics.x += 1;
end.
Regards,
Ryan Joseph
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hExamples/test.pas:4: error:
2: Syntax error, "BEGIN" expected but "identifier F" found
error: Compilation aborted
Ryans-MacBook-Pro-2:output ryanjoseph$
Regards,
Ryan Joseph
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Is there a compiler macro which is set to the value of -WP? It would be useful
to know which SDK I'm targeted while compiling so I can omit certain code at
compile time.
Regards,
Ryan Joseph
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fpc-pascal maillist - fpc-pascal
interfaces!
end;
type
TPerson = class(IBrain, IPhysics)
end;
begin
// calls TPhysicsHelper.Apply via the IPhysics interface in TPerson
person.Apply;
end.
Regards,
Ryan Joseph
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fpc-pascal maillist - fpc-pascal@lists.freepascal.
> On Dec 27, 2019, at 10:29 AM, Ryan Joseph wrote:
>
> It's really just about the namespace and avoiding deeply nested this.that.do
> kind of syntax. We could accomplish this using just plain records, no need to
> even get involved with the complicated interface sy
Str(int: integer): string;
implementation
function TStringHelper.EndsWith(str: string): boolean;
begin
writeln('EndsWith - umultiplehelpers_precedence1');
end;
function IntToStr(int: integer): string;
begin
writeln('IntToStr - umultiplehelpers_precedence1');
end;
end.
Reg
d expect EndsWith to be used from the last
unit, that is SysUtils. If you remake the example without SysUtils and define
the type helpers in 2 units that both enable multihelpers does it work
correctly?
Regards,
Ryan Joseph
___
fpc-pascal ma
tPoint: TPoint;
property point: TPoint read GetPoint;
end;
function TThing.GetPoint: TPoint;
begin
result := m_point;
end;
var
t: TThing;
begin
// no error!
t.point.width := 0;
end.
Regards,
Ryan Joseph
___
fpc-pascal maillis
> On Mar 7, 2020, at 3:39 PM, Sven Barth wrote:
>
> Helpers indeed don't help there (pun intended :P). Please report, yes. And
> add a reference to the two bug reports I mentioned.
>
https://bugs.freepascal.org/view.php?id=36768
Regards,
up myself?
GLPT_IPhone.inc:97: error: 20: Identifier idents no member "touchID"
Main.pas:88:1: error: Identifier not found "f"
Regards,
Ryan Joseph
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it went away.
Regards,
Ryan Joseph
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