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/// wrapper around FPC typinfo.pp unit for SynCommons.pas and mORMot.pas
unit SynFPCTypInfo;
{
This file is part of Synopse mORMot framework.
Synopse mORMot framework. Copyright (C) 2018 Arnaud Bouchez
Synopse Informatique - https://synopse.info
*** BEGIN LICENSE BLOCK *****
Version: MPL 1.1/GPL 2.0/LGPL 2.1
The contents of this file are subject to the Mozilla Public License Version
1.1 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.mozilla.org/MPL
Software distributed under the License is distributed on an "AS IS" basis,
WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
for the specific language governing rights and limitations under the License.
The Original Code is Synopse mORMot framework.
The Initial Developer of the Original Code is Alfred Glaenzer.
Portions created by the Initial Developer are Copyright (C) 2018
the Initial Developer. All Rights Reserved.
Contributor(s):
- Arnaud Bouchez
Alternatively, the contents of this file may be used under the terms of
either the GNU General Public License Version 2 or later (the "GPL"), or
the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
in which case the provisions of the GPL or the LGPL are applicable instead
of those above. if you wish to allow use of your version of this file only
under the terms of either the GPL or the LGPL, and not to allow others to
use your version of this file under the terms of the MPL, indicate your
decision by deleting the provisions above and replace them with the notice
and other provisions required by the GPL or the LGPL. if you do not delete
the provisions above, a recipient may use your version of this file under
the terms of any one of the MPL, the GPL or the LGPL.
***** END LICENSE BLOCK *****
Version 1.18
- initial revision
}
interface
{$I Synopse.inc} // define HASINLINE USETYPEINFO CPU32 CPU64 OWNNORMTOUPPER
uses
SysUtils,
TypInfo;
const
ptField = 0;
ptStatic = 1;
ptVirtual = 2;
ptConst = 3;
{$ifdef FPC_REQUIRES_PROPER_ALIGNMENT}
function AlignToPtr(p : pointer): pointer; inline;
function GetFPCAlignPtr(P: pointer): pointer; inline;
{$else FPC_REQUIRES_PROPER_ALIGNMENT}
type
AlignToPtr = pointer;
{$endif FPC_REQUIRES_PROPER_ALIGNMENT}
function GetFPCEnumName(TypeInfo: PTypeInfo; Value: Integer): PShortString; inline;
function GetFPCEnumValue(TypeInfo: PTypeInfo; const Name: string): Integer; inline;
function AlignTypeData(p : Pointer) : Pointer; inline;
function GetFPCTypeData(TypeInfo: PTypeInfo): PTypeData; inline;
function GetFPCPropInfo(AClass: TClass; const PropName: string): PPropInfo; inline;
{$ifdef FPC_NEWRTTI}
function GetFPCRecInitData(TypeData: Pointer): Pointer; inline;
{$endif}
procedure FPCDynArrayClear(var a: Pointer; typeInfo: Pointer);
procedure FPCFinalizeArray(p: Pointer; typeInfo: Pointer; elemCount: PtrUInt);
procedure FPCFinalize(Data: Pointer; TypeInfo: Pointer);
procedure FPCRecordCopy(const Source; var Dest; TypeInfo: pointer);
procedure FPCRecordAddRef(var Data; TypeInfo : pointer);
type
/// some type definition to avoid inclusion of TypInfo in main SynCommons.pas
PRecInitData = TypInfo.PRecInitData;
implementation
procedure FPCDynArrayClear(var a: Pointer; typeInfo: Pointer);
[external name 'FPC_DYNARRAY_CLEAR'];
procedure FPCFinalizeArray(p: Pointer; typeInfo: Pointer; elemCount: PtrUInt);
[external name 'FPC_FINALIZE_ARRAY'];
procedure FPCFinalize(Data: Pointer; TypeInfo: Pointer);
[external name 'FPC_FINALIZE'];
procedure FPCRecordCopy(const Source; var Dest; TypeInfo: pointer);
[external name 'FPC_COPY'];
procedure FPCRecordAddRef(var Data; TypeInfo : pointer);
[external name 'FPC_ADDREF'];
{$ifdef FPC_REQUIRES_PROPER_ALIGNMENT}
function AlignToPtr(p : pointer): pointer; inline;
begin
result := align(p,sizeof(p));
end;
{$endif}
function GetFPCEnumValue(TypeInfo: PTypeInfo; const Name: string): Integer;
var PS: PShortString;
PT: PTypeData;
Count: longint;
sName: shortstring;
begin
if Length(Name)=0 then
exit(-1);
sName := Name;
PT := GetFPCTypeData(TypeInfo);
Count := 0;
result := -1;
if TypeInfo^.Kind=tkBool then begin
if CompareText(BooleanIdents[false],Name)=0 then
result := 0 else
if CompareText(BooleanIdents[true],Name)=0 then
result := 1;
end else
begin
PS := @PT^.NameList;
while (result=-1) and (PByte(PS)^<>0) do begin
if ShortCompareText(PS^, sName) = 0 then
result := Count+PT^.MinValue;
PS := PShortString(pointer(PS)+PByte(PS)^+1);
Inc(Count);
end;
end;
end;
function GetFPCEnumName(TypeInfo: PTypeInfo; Value: Integer): PShortString;
const NULL_SHORTSTRING: string[1] = '';
Var PS: PShortString;
PT: PTypeData;
begin
PT := GetFPCTypeData(TypeInfo);
if TypeInfo^.Kind=tkBool then begin
case Value of
0,1: result := @BooleanIdents[Boolean(Value)];
else result := @NULL_SHORTSTRING;
end;
end else begin
PS := @PT^.NameList;
dec(Value,PT^.MinValue);
while Value>0 do begin
PS := PShortString(pointer(PS)+PByte(PS)^+1);
Dec(Value);
end;
result := PS;
end;
end;
function AlignTypeData(p: Pointer): Pointer;
begin
result := TypInfo.AlignTypeData(p);
end;
function GetFPCTypeData(TypeInfo: PTypeInfo): PTypeData;
begin
result := PTypeData(TypInfo.AlignTypeData(PTypeData(pointer(TypeInfo)+2+PByte(pointer(TypeInfo)+1)^)));
end;
{$ifdef FPC_REQUIRES_PROPER_ALIGNMENT}
function GetFPCAlignPtr(P: pointer): pointer;
begin
result := TypInfo.AlignTypeData(P+2+Length(PTypeInfo(P)^.Name));
Dec(PtrUInt(result),SizeOf(pointer));
end;
{$endif}
function GetFPCPropInfo(AClass: TClass; const PropName: string): PPropInfo;
begin
result := typinfo.GetPropInfo(AClass,PropName);
end;
{$ifdef FPC_NEWRTTI}
function GetFPCRecInitData(TypeData: Pointer): Pointer;
begin
if PTypeData(TypeData)^.RecInitInfo = nil then
result := TypeData
else
result := TypInfo.AlignTypeData(pointer(PTypeData(TypeData)^.RecInitData));
end;
{$endif}
end.