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fpc/compiler/symdef.pas
yury 348e30958e * If object has VMT, properly align whole object instance if target CPU requires alignment. It fixes usage of static object instances created as var or const on CPUs which require alignment. 
* Partially reverted Micha's fix in revs 10544,10546,10548, because it is not needed anymore.

git-svn-id: trunk@10648 -
2008-04-13 15:36:44 +00:00

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{
Symbol table implementation for the definitions
Copyright (c) 1998-2005 by Florian Klaempfl, Pierre Muller
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
****************************************************************************
}
unit symdef;
{$i fpcdefs.inc}
interface
uses
{ common }
cclasses,
{ global }
globtype,globals,tokens,constexp,
{ symtable }
symconst,symbase,symtype,
{ ppu }
ppu,
{ node }
node,
{ aasm }
aasmbase,aasmtai,aasmdata,
cpubase,cpuinfo,
cgbase,cgutils,
parabase
;
type
{************************************************
TDef
************************************************}
{ tstoreddef }
tstoreddef = class(tdef)
protected
typesymderef : tderef;
public
{$ifdef EXTDEBUG}
fileinfo : tfileposinfo;
{$endif}
{ generic support }
genericdef : tstoreddef;
genericdefderef : tderef;
generictokenbuf : tdynamicarray;
constructor create(dt:tdeftyp);
constructor ppuload(dt:tdeftyp;ppufile:tcompilerppufile);
destructor destroy;override;
procedure reset;virtual;
function getcopy : tstoreddef;virtual;
procedure ppuwrite(ppufile:tcompilerppufile);virtual;
procedure buildderef;override;
procedure buildderefimpl;override;
procedure deref;override;
procedure derefimpl;override;
function size:aint;override;
function getvardef:longint;override;
function alignment:shortint;override;
function is_publishable : boolean;override;
function needs_inittable : boolean;override;
function rtti_mangledname(rt:trttitype):string;override;
{ regvars }
function is_intregable : boolean;
function is_fpuregable : boolean;
{ generics }
procedure initgeneric;
private
savesize : aint;
end;
tfiletyp = (ft_text,ft_typed,ft_untyped);
tfiledef = class(tstoreddef)
filetyp : tfiletyp;
typedfiledef : tdef;
typedfiledefderef : tderef;
constructor createtext;
constructor createuntyped;
constructor createtyped(def : tdef);
constructor ppuload(ppufile:tcompilerppufile);
function getcopy : tstoreddef;override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
procedure buildderef;override;
procedure deref;override;
function GetTypeName:string;override;
function getmangledparaname:string;override;
procedure setsize;
end;
tvariantdef = class(tstoreddef)
varianttype : tvarianttype;
constructor create(v : tvarianttype);
constructor ppuload(ppufile:tcompilerppufile);
function getcopy : tstoreddef;override;
function GetTypeName:string;override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
function getvardef:longint;override;
procedure setsize;
function is_publishable : boolean;override;
function needs_inittable : boolean;override;
end;
tformaldef = class(tstoreddef)
typed:boolean;
constructor create(Atyped:boolean);
constructor ppuload(ppufile:tcompilerppufile);
procedure ppuwrite(ppufile:tcompilerppufile);override;
function GetTypeName:string;override;
end;
tforwarddef = class(tstoreddef)
tosymname : pshortstring;
forwardpos : tfileposinfo;
constructor create(const s:string;const pos : tfileposinfo);
destructor destroy;override;
function GetTypeName:string;override;
end;
tundefineddef = class(tstoreddef)
constructor create;
constructor ppuload(ppufile:tcompilerppufile);
procedure ppuwrite(ppufile:tcompilerppufile);override;
function GetTypeName:string;override;
end;
terrordef = class(tstoreddef)
constructor create;
procedure ppuwrite(ppufile:tcompilerppufile);override;
function GetTypeName:string;override;
function getmangledparaname : string;override;
end;
tabstractpointerdef = class(tstoreddef)
pointeddef : tdef;
pointeddefderef : tderef;
constructor create(dt:tdeftyp;def:tdef);
constructor ppuload(dt:tdeftyp;ppufile:tcompilerppufile);
procedure ppuwrite(ppufile:tcompilerppufile);override;
procedure buildderef;override;
procedure deref;override;
end;
tpointerdef = class(tabstractpointerdef)
is_far : boolean;
constructor create(def:tdef);
constructor createfar(def:tdef);
function getcopy : tstoreddef;override;
constructor ppuload(ppufile:tcompilerppufile);
procedure ppuwrite(ppufile:tcompilerppufile);override;
function GetTypeName:string;override;
end;
tabstractrecorddef= class(tstoreddef)
symtable : TSymtable;
procedure reset;override;
function GetSymtable(t:tGetSymtable):TSymtable;override;
function is_packed:boolean;
end;
trecorddef = class(tabstractrecorddef)
public
isunion : boolean;
constructor create(p : TSymtable);
constructor ppuload(ppufile:tcompilerppufile);
destructor destroy;override;
function getcopy : tstoreddef;override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
procedure buildderef;override;
procedure deref;override;
function size:aint;override;
function alignment : shortint;override;
function padalignment: shortint;
function GetTypeName:string;override;
{ debug }
function needs_inittable : boolean;override;
end;
tprocdef = class;
tobjectdef = class;
{ TImplementedInterface }
TImplementedInterface = class
IntfDef : tobjectdef;
IntfDefDeref : tderef;
IType : tinterfaceentrytype;
IOffset : longint;
VtblImplIntf : TImplementedInterface;
NameMappings : TFPHashList;
ProcDefs : TFPObjectList;
ImplementsGetter : tsym;
constructor create(aintf: tobjectdef);
constructor create_deref(d:tderef);
destructor destroy; override;
function getcopy:TImplementedInterface;
procedure buildderef;
procedure deref;
procedure AddMapping(const origname, newname: string);
function GetMapping(const origname: string):string;
procedure AddImplProc(pd:tprocdef);
function IsImplMergePossible(MergingIntf:TImplementedInterface;out weight: longint): boolean;
end;
{ tobjectdef }
tobjectdef = class(tabstractrecorddef)
public
dwarf_struct_lab : tasmsymbol;
childof : tobjectdef;
childofderef : tderef;
objname,
objrealname : pshortstring;
objectoptions : tobjectoptions;
{ to be able to have a variable vmt position }
{ and no vmt field for objects without virtuals }
vmtentries : TFPObjectList;
vmt_offset : longint;
writing_class_record_dbginfo : boolean;
objecttype : tobjecttyp;
iidguid : pguid;
iidstr : pshortstring;
{ store implemented interfaces defs and name mappings }
ImplementedInterfaces : TFPObjectList;
constructor create(ot : tobjecttyp;const n : string;c : tobjectdef);
constructor ppuload(ppufile:tcompilerppufile);
destructor destroy;override;
function getcopy : tstoreddef;override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
function GetTypeName:string;override;
procedure buildderef;override;
procedure deref;override;
function getparentdef:tdef;override;
function size : aint;override;
function alignment:shortint;override;
function vmtmethodoffset(index:longint):longint;
function members_need_inittable : boolean;
function find_implemented_interface(aintfdef:tobjectdef):TImplementedInterface;
{ this should be called when this class implements an interface }
procedure prepareguid;
function is_publishable : boolean;override;
function needs_inittable : boolean;override;
function vmt_mangledname : string;
procedure check_forwards;
function is_related(d : tdef) : boolean;override;
procedure insertvmt;
procedure set_parent(c : tobjectdef);
function FindDestructor : tprocdef;
end;
tclassrefdef = class(tabstractpointerdef)
constructor create(def:tdef);
constructor ppuload(ppufile:tcompilerppufile);
procedure ppuwrite(ppufile:tcompilerppufile);override;
function GetTypeName:string;override;
function is_publishable : boolean;override;
end;
tarraydef = class(tstoreddef)
lowrange,
highrange : aint;
rangedef : tdef;
rangedefderef : tderef;
arrayoptions : tarraydefoptions;
protected
_elementdef : tdef;
_elementdefderef : tderef;
procedure setelementdef(def:tdef);
public
function elesize : aint;
function elepackedbitsize : aint;
function elecount : aword;
constructor create_from_pointer(def:tdef);
constructor create(l,h : aint;def:tdef);
constructor ppuload(ppufile:tcompilerppufile);
function getcopy : tstoreddef;override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
function GetTypeName:string;override;
function getmangledparaname : string;override;
procedure buildderef;override;
procedure deref;override;
function size : aint;override;
function alignment : shortint;override;
{ returns the label of the range check string }
function needs_inittable : boolean;override;
property elementdef : tdef read _elementdef write setelementdef;
end;
torddef = class(tstoreddef)
low,high : TConstExprInt;
ordtype : tordtype;
constructor create(t : tordtype;v,b : TConstExprInt);
constructor ppuload(ppufile:tcompilerppufile);
function getcopy : tstoreddef;override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
function is_publishable : boolean;override;
function GetTypeName:string;override;
function alignment:shortint;override;
procedure setsize;
function packedbitsize: aint; override;
function getvardef : longint;override;
end;
tfloatdef = class(tstoreddef)
floattype : tfloattype;
constructor create(t : tfloattype);
constructor ppuload(ppufile:tcompilerppufile);
function getcopy : tstoreddef;override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
function GetTypeName:string;override;
function is_publishable : boolean;override;
function alignment:shortint;override;
procedure setsize;
function getvardef:longint;override;
end;
tabstractprocdef = class(tstoreddef)
{ saves a definition to the return type }
returndef : tdef;
returndefderef : tderef;
parast : TSymtable;
paras : tparalist;
proctypeoption : tproctypeoption;
proccalloption : tproccalloption;
procoptions : tprocoptions;
requiredargarea : aint;
{ number of user visibile parameters }
maxparacount,
minparacount : byte;
{$ifdef m68k}
exp_funcretloc : tregister; { explicit funcretloc for AmigaOS }
{$endif}
funcretloc : array[tcallercallee] of TLocation;
has_paraloc_info : boolean; { paraloc info is available }
constructor create(dt:tdeftyp;level:byte);
constructor ppuload(dt:tdeftyp;ppufile:tcompilerppufile);
destructor destroy;override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
procedure buildderef;override;
procedure deref;override;
procedure calcparas;
function typename_paras(showhidden:boolean): string;
function is_methodpointer:boolean;virtual;
function is_addressonly:boolean;virtual;
private
procedure count_para(p:TObject;arg:pointer);
procedure insert_para(p:TObject;arg:pointer);
end;
tprocvardef = class(tabstractprocdef)
constructor create(level:byte);
constructor ppuload(ppufile:tcompilerppufile);
function getcopy : tstoreddef;override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
function GetSymtable(t:tGetSymtable):TSymtable;override;
function size : aint;override;
function GetTypeName:string;override;
function is_publishable : boolean;override;
function is_methodpointer:boolean;override;
function is_addressonly:boolean;override;
function getmangledparaname:string;override;
end;
tmessageinf = record
case integer of
0 : (str : pshortstring);
1 : (i : longint);
end;
tinlininginfo = record
{ node tree }
code : tnode;
flags : tprocinfoflags;
end;
pinlininginfo = ^tinlininginfo;
{$ifdef oldregvars}
{ register variables }
pregvarinfo = ^tregvarinfo;
tregvarinfo = record
regvars : array[1..maxvarregs] of tsym;
regvars_para : array[1..maxvarregs] of boolean;
regvars_refs : array[1..maxvarregs] of longint;
fpuregvars : array[1..maxfpuvarregs] of tsym;
fpuregvars_para : array[1..maxfpuvarregs] of boolean;
fpuregvars_refs : array[1..maxfpuvarregs] of longint;
end;
{$endif oldregvars}
tprocdef = class(tabstractprocdef)
private
_mangledname : pshortstring;
public
messageinf : tmessageinf;
dispid : longint;
extnumber : word;
{$ifndef EXTDEBUG}
{ where is this function defined and what were the symbol
flags, needed here because there
is only one symbol for all overloaded functions
EXTDEBUG has fileinfo in tdef (PFV) }
fileinfo : tfileposinfo;
{$endif}
symoptions : tsymoptions;
{ symbol owning this definition }
procsym : tsym;
procsymderef : tderef;
{ alias names }
aliasnames : TCmdStrList;
{ symtables }
localst : TSymtable;
funcretsym : tsym;
funcretsymderef : tderef;
_class : tobjectdef;
_classderef : tderef;
{$if defined(powerpc) or defined(m68k)}
{ library symbol for AmigaOS/MorphOS }
libsym : tsym;
libsymderef : tderef;
{$endif powerpc or m68k}
{ name of the result variable to insert in the localsymtable }
resultname : pshortstring;
{ true, if the procedure is only declared
(forward procedure) }
forwarddef,
{ true if the procedure is declared in the interface }
interfacedef : boolean;
{ true if the procedure has a forward declaration }
hasforward : boolean;
{ import info }
import_dll,
import_name : pshortstring;
import_nr : word;
{ info for inlining the subroutine, if this pointer is nil,
the procedure can't be inlined }
inlininginfo : pinlininginfo;
{$ifdef oldregvars}
regvarinfo: pregvarinfo;
{$endif oldregvars}
{$ifdef i386}
fpu_used : byte;
{$endif i386}
{ position in aasmoutput list }
procstarttai,
procendtai : tai;
constructor create(level:byte);
constructor ppuload(ppufile:tcompilerppufile);
destructor destroy;override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
procedure buildderef;override;
procedure buildderefimpl;override;
procedure deref;override;
procedure derefimpl;override;
procedure reset;override;
function GetSymtable(t:tGetSymtable):TSymtable;override;
function GetTypeName : string;override;
function mangledname : string;
procedure setmangledname(const s : string);
function fullprocname(showhidden:boolean):string;
function cplusplusmangledname : string;
function is_methodpointer:boolean;override;
function is_addressonly:boolean;override;
function is_visible_for_object(currobjdef,contextobjdef:tobjectdef):boolean;
end;
{ single linked list of overloaded procs }
pprocdeflist = ^tprocdeflist;
tprocdeflist = record
def : tprocdef;
defderef : tderef;
next : pprocdeflist;
end;
tstringdef = class(tstoreddef)
stringtype : tstringtype;
len : aint;
constructor createshort(l : byte);
constructor loadshort(ppufile:tcompilerppufile);
constructor createlong(l : aint);
constructor loadlong(ppufile:tcompilerppufile);
constructor createansi;
constructor loadansi(ppufile:tcompilerppufile);
constructor createwide;
constructor loadwide(ppufile:tcompilerppufile);
constructor createunicode;
constructor loadunicode(ppufile:tcompilerppufile);
function getcopy : tstoreddef;override;
function stringtypname:string;
procedure ppuwrite(ppufile:tcompilerppufile);override;
function GetTypeName:string;override;
function getmangledparaname:string;override;
function is_publishable : boolean;override;
function alignment : shortint;override;
function needs_inittable : boolean;override;
function getvardef:longint;override;
end;
tenumdef = class(tstoreddef)
minval,
maxval : aint;
has_jumps : boolean;
firstenum : tsym; {tenumsym}
basedef : tenumdef;
basedefderef : tderef;
constructor create;
constructor create_subrange(_basedef:tenumdef;_min,_max:aint);
constructor ppuload(ppufile:tcompilerppufile);
function getcopy : tstoreddef;override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
procedure buildderef;override;
procedure deref;override;
procedure derefimpl;override;
function GetTypeName:string;override;
function is_publishable : boolean;override;
procedure calcsavesize;
function packedbitsize: aint; override;
procedure setmax(_max:aint);
procedure setmin(_min:aint);
function min:aint;
function max:aint;
end;
tsetdef = class(tstoreddef)
elementdef : tdef;
elementdefderef : tderef;
setbase,
setmax : aword;
constructor create(def:tdef;low, high : aint);
constructor ppuload(ppufile:tcompilerppufile);
function getcopy : tstoreddef;override;
procedure ppuwrite(ppufile:tcompilerppufile);override;
procedure buildderef;override;
procedure deref;override;
function GetTypeName:string;override;
function is_publishable : boolean;override;
end;
Tdefmatch=(dm_exact,dm_equal,dm_convertl1);
var
aktobjectdef : tobjectdef; { used for private functions check !! }
{ default types }
generrordef, { error in definition }
voidpointertype, { pointer for Void-pointeddef }
charpointertype, { pointer for Char-pointeddef }
widecharpointertype, { pointer for WideChar-pointeddef }
voidfarpointertype,
cundefinedtype,
cformaltype, { unique formal definition }
ctypedformaltype, { unique typed formal definition }
voidtype, { Void (procedure) }
cchartype, { Char }
cwidechartype, { WideChar }
booltype, { boolean type }
bool8type,
bool16type,
bool32type,
bool64type, { implement me }
u8inttype, { 8-Bit unsigned integer }
s8inttype, { 8-Bit signed integer }
u16inttype, { 16-Bit unsigned integer }
s16inttype, { 16-Bit signed integer }
u32inttype, { 32-Bit unsigned integer }
s32inttype, { 32-Bit signed integer }
u64inttype, { 64-bit unsigned integer }
s64inttype, { 64-bit signed integer }
s32floattype, { pointer for realconstn }
s64floattype, { pointer for realconstn }
s80floattype, { pointer to type of temp. floats }
s64currencytype, { pointer to a currency type }
cshortstringtype, { pointer to type of short string const }
clongstringtype, { pointer to type of long string const }
cansistringtype, { pointer to type of ansi string const }
cwidestringtype, { pointer to type of wide string const }
cunicodestringtype,
openshortstringtype, { pointer to type of an open shortstring,
needed for readln() }
openchararraytype, { pointer to type of an open array of char,
needed for readln() }
cfiletype, { get the same definition for all file }
{ used for stabs }
methodpointertype, { typecasting of methodpointers to extract self }
hresultdef,
{ we use only one variant def for every variant class }
cvarianttype,
colevarianttype,
{ default integer type s32inttype on 32 bit systems, s64bittype on 64 bit systems }
sinttype,
uinttype,
{ unsigned and signed ord type with the same size as a pointer }
ptruinttype,
ptrsinttype,
{ several types to simulate more or less C++ objects for GDB }
vmttype,
vmtarraytype,
pvmttype : tdef; { type of classrefs, used for stabs }
{ pointer to the anchestor of all classes }
class_tobject : tobjectdef;
{ pointer to the ancestor of all COM interfaces }
interface_iunknown : tobjectdef;
{ pointer to the TGUID type
of all interfaces }
rec_tguid : trecorddef;
const
{$ifdef i386}
pbestrealtype : ^tdef = @s80floattype;
{$endif}
{$ifdef x86_64}
pbestrealtype : ^tdef = @s80floattype;
{$endif}
{$ifdef m68k}
pbestrealtype : ^tdef = @s64floattype;
{$endif}
{$ifdef alpha}
pbestrealtype : ^tdef = @s64floattype;
{$endif}
{$ifdef powerpc}
pbestrealtype : ^tdef = @s64floattype;
{$endif}
{$ifdef POWERPC64}
pbestrealtype : ^tdef = @s64floattype;
{$endif}
{$ifdef ia64}
pbestrealtype : ^tdef = @s64floattype;
{$endif}
{$ifdef SPARC}
pbestrealtype : ^tdef = @s64floattype;
{$endif SPARC}
{$ifdef vis}
pbestrealtype : ^tdef = @s64floattype;
{$endif vis}
{$ifdef ARM}
pbestrealtype : ^tdef = @s64floattype;
{$endif ARM}
{$ifdef MIPS}
pbestrealtype : ^tdef = @s64floattype;
{$endif MIPS}
{$ifdef AVR}
pbestrealtype : ^tdef = @s64floattype;
{$endif AVR}
function make_mangledname(const typeprefix:string;st:TSymtable;const suffix:string):string;
{ should be in the types unit, but the types unit uses the node stuff :( }
function is_interfacecom(def: tdef): boolean;
function is_interfacecorba(def: tdef): boolean;
function is_interface(def: tdef): boolean;
function is_dispinterface(def: tdef): boolean;
function is_object(def: tdef): boolean;
function is_class(def: tdef): boolean;
function is_cppclass(def: tdef): boolean;
function is_class_or_interface(def: tdef): boolean;
function is_class_or_interface_or_dispinterface(def: tdef): boolean;
{$ifdef x86}
function use_sse(def : tdef) : boolean;
{$endif x86}
implementation
uses
SysUtils,
cutils,
{ global }
verbose,
{ target }
systems,aasmcpu,paramgr,
{ symtable }
symsym,symtable,symutil,defutil,
{ module }
fmodule,
{ other }
gendef,
fpccrc
;
{****************************************************************************
Constants
****************************************************************************}
const
varempty = 0;
varnull = 1;
varsmallint = 2;
varinteger = 3;
varsingle = 4;
vardouble = 5;
varcurrency = 6;
vardate = 7;
varolestr = 8;
vardispatch = 9;
varerror = 10;
varboolean = 11;
varvariant = 12;
varunknown = 13;
vardecimal = 14;
varshortint = 16;
varbyte = 17;
varword = 18;
varlongword = 19;
varint64 = 20;
varqword = 21;
varunicodestr = 22;
varUndefined = -1;
varstrarg = $48;
varstring = $100;
varany = $101;
vardefmask = $fff;
vararray = $2000;
varbyref = $4000;
{****************************************************************************
Helpers
****************************************************************************}
function make_mangledname(const typeprefix:string;st:TSymtable;const suffix:string):string;
var
s,hs,
prefix : string;
oldlen,
newlen,
i : longint;
crc : dword;
hp : tparavarsym;
begin
prefix:='';
if not assigned(st) then
internalerror(200204212);
{ sub procedures }
while (st.symtabletype=localsymtable) do
begin
if st.defowner.typ<>procdef then
internalerror(200204173);
{ Add the full mangledname of procedure to prevent
conflicts with 2 overloads having both a nested procedure
with the same name, see tb0314 (PFV) }
s:=tprocdef(st.defowner).procsym.name;
oldlen:=length(s);
for i:=0 to tprocdef(st.defowner).paras.count-1 do
begin
hp:=tparavarsym(tprocdef(st.defowner).paras[i]);
if not(vo_is_hidden_para in hp.varoptions) then
s:=s+'$'+hp.vardef.mangledparaname;
end;
if not is_void(tprocdef(st.defowner).returndef) then
s:=s+'$$'+tprocdef(st.defowner).returndef.mangledparaname;
newlen:=length(s);
{ Replace with CRC if the parameter line is very long }
if (newlen-oldlen>12) and
((newlen+length(prefix)>128) or (newlen-oldlen>32)) then
begin
crc:=0;
for i:=0 to tprocdef(st.defowner).paras.count-1 do
begin
hp:=tparavarsym(tprocdef(st.defowner).paras[i]);
if not(vo_is_hidden_para in hp.varoptions) then
begin
hs:=hp.vardef.mangledparaname;
crc:=UpdateCrc32(crc,hs[1],length(hs));
end;
end;
hs:=hp.vardef.mangledparaname;
crc:=UpdateCrc32(crc,hs[1],length(hs));
s:=Copy(s,1,oldlen)+'$crc'+hexstr(crc,8);
end;
if prefix<>'' then
prefix:=s+'_'+prefix
else
prefix:=s;
st:=st.defowner.owner;
end;
{ object/classes symtable }
if (st.symtabletype=ObjectSymtable) then
begin
if st.defowner.typ<>objectdef then
internalerror(200204174);
prefix:=tobjectdef(st.defowner).objname^+'_$_'+prefix;
st:=st.defowner.owner;
end;
{ symtable must now be static or global }
if not(st.symtabletype in [staticsymtable,globalsymtable]) then
internalerror(200204175);
result:='';
if typeprefix<>'' then
result:=result+typeprefix+'_';
{ Add P$ for program, which can have the same name as
a unit }
if (TSymtable(main_module.localsymtable)=st) and
(not main_module.is_unit) then
result:=result+'P$'+st.name^
else
result:=result+st.name^;
if prefix<>'' then
result:=result+'_'+prefix;
if suffix<>'' then
result:=result+'_'+suffix;
{ the Darwin assembler assumes that all symbols starting with 'L' are local }
{ Further, the Mac OS X 10.5 linker does not consider symbols which do not }
{ start with '_' as regular symbols (it does not generate N_GSYM entries }
{ those in the debug map, leading to troubles with dsymutil). So always }
{ add an underscore on darwin. }
if (target_info.system in systems_darwin) then
result := '_' + result;
end;
{****************************************************************************
TDEF (base class for definitions)
****************************************************************************}
constructor tstoreddef.create(dt:tdeftyp);
var
insertstack : psymtablestackitem;
begin
inherited create(dt);
savesize := 0;
{$ifdef EXTDEBUG}
fileinfo := current_filepos;
{$endif}
generictokenbuf:=nil;
genericdef:=nil;
{ Don't register forwarddefs, they are disposed at the
end of an type block }
if (dt=forwarddef) then
exit;
{ Register in current_module }
if assigned(current_module) then
begin
current_module.deflist.Add(self);
DefId:=current_module.deflist.Count-1;
end;
{ Register in symtable stack }
if assigned(symtablestack) then
begin
insertstack:=symtablestack.stack;
while assigned(insertstack) and
(insertstack^.symtable.symtabletype=withsymtable) do
insertstack:=insertstack^.next;
if not assigned(insertstack) then
internalerror(200602044);
insertstack^.symtable.insertdef(self);
end;
end;
destructor tstoreddef.destroy;
begin
{ Direct calls are not allowed, use symtable.deletedef() }
if assigned(owner) then
internalerror(200612311);
if assigned(generictokenbuf) then
begin
generictokenbuf.free;
generictokenbuf:=nil;
end;
inherited destroy;
end;
constructor tstoreddef.ppuload(dt:tdeftyp;ppufile:tcompilerppufile);
var
sizeleft,i : longint;
buf : array[0..255] of byte;
begin
inherited create(dt);
DefId:=ppufile.getlongint;
current_module.deflist[DefId]:=self;
{$ifdef EXTDEBUG}
fillchar(fileinfo,sizeof(fileinfo),0);
{$endif}
{ load }
ppufile.getderef(typesymderef);
ppufile.getsmallset(defoptions);
ppufile.getsmallset(defstates);
if df_generic in defoptions then
begin
sizeleft:=ppufile.getlongint;
initgeneric;
while sizeleft>0 do
begin
if sizeleft>sizeof(buf) then
i:=sizeof(buf)
else
i:=sizeleft;
ppufile.getdata(buf,i);
generictokenbuf.write(buf,i);
dec(sizeleft,i);
end;
end;
if df_specialization in defoptions then
ppufile.getderef(genericdefderef);
end;
function Tstoreddef.rtti_mangledname(rt:trttitype):string;
var
prefix : string[4];
begin
if rt=fullrtti then
begin
prefix:='RTTI';
include(defstates,ds_rtti_table_used);
end
else
begin
prefix:='INIT';
include(defstates,ds_init_table_used);
end;
if assigned(typesym) and
(owner.symtabletype in [staticsymtable,globalsymtable]) then
result:=make_mangledname(prefix,owner,typesym.name)
else
result:=make_mangledname(prefix,findunitsymtable(owner),'DEF'+tostr(DefId))
end;
procedure Tstoreddef.reset;
begin
end;
function tstoreddef.getcopy : tstoreddef;
begin
Message(sym_e_cant_create_unique_type);
getcopy:=terrordef.create;
end;
procedure tstoreddef.ppuwrite(ppufile:tcompilerppufile);
var
sizeleft,i : longint;
buf : array[0..255] of byte;
oldintfcrc : boolean;
begin
ppufile.putlongint(DefId);
ppufile.putderef(typesymderef);
ppufile.putsmallset(defoptions);
oldintfcrc:=ppufile.do_crc;
ppufile.do_crc:=false;
ppufile.putsmallset(defstates);
if df_generic in defoptions then
begin
if assigned(generictokenbuf) then
begin
sizeleft:=generictokenbuf.size;
generictokenbuf.seek(0);
end
else
sizeleft:=0;
ppufile.putlongint(sizeleft);
while sizeleft>0 do
begin
if sizeleft>sizeof(buf) then
i:=sizeof(buf)
else
i:=sizeleft;
generictokenbuf.read(buf,i);
ppufile.putdata(buf,i);
dec(sizeleft,i);
end;
end;
ppufile.do_crc:=oldintfcrc;
if df_specialization in defoptions then
ppufile.putderef(genericdefderef);
end;
procedure tstoreddef.buildderef;
begin
typesymderef.build(typesym);
genericdefderef.build(genericdef);
end;
procedure tstoreddef.buildderefimpl;
begin
end;
procedure tstoreddef.deref;
begin
typesym:=ttypesym(typesymderef.resolve);
if df_specialization in defoptions then
genericdef:=tstoreddef(genericdefderef.resolve);
end;
procedure tstoreddef.derefimpl;
begin
end;
function tstoreddef.size : aint;
begin
size:=savesize;
end;
function tstoreddef.getvardef:longint;
begin
result:=varUndefined;
end;
function tstoreddef.alignment : shortint;
begin
{ natural alignment by default }
alignment:=size_2_align(savesize);
end;
{ returns true, if the definition can be published }
function tstoreddef.is_publishable : boolean;
begin
is_publishable:=false;
end;
{ needs an init table }
function tstoreddef.needs_inittable : boolean;
begin
needs_inittable:=false;
end;
function tstoreddef.is_intregable : boolean;
var
recsize,temp: longint;
begin
is_intregable:=false;
case typ of
orddef,
pointerdef,
enumdef,
classrefdef:
is_intregable:=true;
procvardef :
is_intregable:=not(po_methodpointer in tprocvardef(self).procoptions);
objectdef:
is_intregable:=(is_class(self) or is_interface(self)) and not needs_inittable;
setdef:
is_intregable:=is_smallset(self);
recorddef:
begin
recsize:=size;
is_intregable:=
ispowerof2(recsize,temp) and
(recsize <= sizeof(aint));
end;
end;
end;
function tstoreddef.is_fpuregable : boolean;
begin
{$ifdef x86}
result:=use_sse(self);
{$else x86}
result:=(typ=floatdef) and not(cs_fp_emulation in current_settings.moduleswitches);
{$endif x86}
end;
procedure tstoreddef.initgeneric;
begin
if assigned(generictokenbuf) then
internalerror(200512131);
generictokenbuf:=tdynamicarray.create(256);
end;
{****************************************************************************
Tstringdef
****************************************************************************}
constructor tstringdef.createshort(l : byte);
begin
inherited create(stringdef);
stringtype:=st_shortstring;
len:=l;
savesize:=len+1;
end;
constructor tstringdef.loadshort(ppufile:tcompilerppufile);
begin
inherited ppuload(stringdef,ppufile);
stringtype:=st_shortstring;
len:=ppufile.getbyte;
savesize:=len+1;
end;
constructor tstringdef.createlong(l : aint);
begin
inherited create(stringdef);
stringtype:=st_longstring;
len:=l;
savesize:=sizeof(pint);
end;
constructor tstringdef.loadlong(ppufile:tcompilerppufile);
begin
inherited ppuload(stringdef,ppufile);
stringtype:=st_longstring;
len:=ppufile.getaint;
savesize:=sizeof(pint);
end;
constructor tstringdef.createansi;
begin
inherited create(stringdef);
stringtype:=st_ansistring;
len:=-1;
savesize:=sizeof(pint);
end;
constructor tstringdef.loadansi(ppufile:tcompilerppufile);
begin
inherited ppuload(stringdef,ppufile);
stringtype:=st_ansistring;
len:=ppufile.getaint;
savesize:=sizeof(pint);
end;
constructor tstringdef.createwide;
begin
inherited create(stringdef);
stringtype:=st_widestring;
len:=-1;
savesize:=sizeof(pint);
end;
constructor tstringdef.loadwide(ppufile:tcompilerppufile);
begin
inherited ppuload(stringdef,ppufile);
stringtype:=st_widestring;
len:=ppufile.getaint;
savesize:=sizeof(pint);
end;
constructor tstringdef.createunicode;
begin
inherited create(stringdef);
stringtype:=st_unicodestring;
len:=-1;
savesize:=sizeof(pint);
end;
constructor tstringdef.loadunicode(ppufile:tcompilerppufile);
begin
inherited ppuload(stringdef,ppufile);
stringtype:=st_unicodestring;
len:=ppufile.getaint;
savesize:=sizeof(pint);
end;
function tstringdef.getcopy : tstoreddef;
begin
result:=tstringdef.create(typ);
result.typ:=stringdef;
tstringdef(result).stringtype:=stringtype;
tstringdef(result).len:=len;
tstringdef(result).savesize:=savesize;
end;
function tstringdef.stringtypname:string;
const
typname:array[tstringtype] of string[10]=(
'shortstr','longstr','ansistr','widestr','unicodestr'
);
begin
stringtypname:=typname[stringtype];
end;
procedure tstringdef.ppuwrite(ppufile:tcompilerppufile);
begin
inherited ppuwrite(ppufile);
if stringtype=st_shortstring then
begin
{$ifdef extdebug}
if len > 255 then internalerror(12122002);
{$endif}
ppufile.putbyte(byte(len))
end
else
ppufile.putaint(len);
case stringtype of
st_shortstring : ppufile.writeentry(ibshortstringdef);
st_longstring : ppufile.writeentry(iblongstringdef);
st_ansistring : ppufile.writeentry(ibansistringdef);
st_widestring : ppufile.writeentry(ibwidestringdef);
st_unicodestring : ppufile.writeentry(ibunicodestringdef);
end;
end;
function tstringdef.needs_inittable : boolean;
begin
needs_inittable:=stringtype in [st_ansistring,st_widestring,st_unicodestring];
end;
function tstringdef.GetTypeName : string;
const
names : array[tstringtype] of string[15] = (
'ShortString','LongString','AnsiString','WideString','UnicodeString');
begin
GetTypeName:=names[stringtype];
end;
function tstringdef.getvardef : longint;
const
vardef : array[tstringtype] of longint = (
varUndefined,varUndefined,varString,varOleStr,varUnicodeStr);
begin
result:=vardef[stringtype];
end;
function tstringdef.alignment : shortint;
begin
case stringtype of
st_unicodestring,
st_widestring,
st_ansistring:
alignment:=size_2_align(savesize);
st_longstring,
st_shortstring:
if (tf_requires_proper_alignment in target_info.flags) then
{ char to string accesses byte 0 and 1 with one word access }
alignment:=size_2_align(2)
else
alignment:=size_2_align(1);
else
internalerror(200412301);
end;
end;
function tstringdef.getmangledparaname : string;
begin
getmangledparaname:='STRING';
end;
function tstringdef.is_publishable : boolean;
begin
is_publishable:=true;
end;
{****************************************************************************
TENUMDEF
****************************************************************************}
constructor tenumdef.create;
begin
inherited create(enumdef);
minval:=0;
maxval:=0;
calcsavesize;
has_jumps:=false;
basedef:=nil;
firstenum:=nil;
end;
constructor tenumdef.create_subrange(_basedef:tenumdef;_min,_max:aint);
begin
inherited create(enumdef);
minval:=_min;
maxval:=_max;
basedef:=_basedef;
calcsavesize;
has_jumps:=false;
firstenum:=basedef.firstenum;
while assigned(firstenum) and (tenumsym(firstenum).value<>minval) do
firstenum:=tenumsym(firstenum).nextenum;
end;
constructor tenumdef.ppuload(ppufile:tcompilerppufile);
begin
inherited ppuload(enumdef,ppufile);
ppufile.getderef(basedefderef);
minval:=ppufile.getaint;
maxval:=ppufile.getaint;
savesize:=ppufile.getaint;
has_jumps:=false;
firstenum:=Nil;
end;
function tenumdef.getcopy : tstoreddef;
begin
if assigned(basedef) then
result:=tenumdef.create_subrange(basedef,minval,maxval)
else
begin
result:=tenumdef.create;
tenumdef(result).minval:=minval;
tenumdef(result).maxval:=maxval;
end;
tenumdef(result).has_jumps:=has_jumps;
tenumdef(result).firstenum:=firstenum;
tenumdef(result).basedefderef:=basedefderef;
end;
procedure tenumdef.calcsavesize;
begin
if (current_settings.packenum=8) or (min<low(longint)) or (int64(max)>high(cardinal)) then
savesize:=8
else
if (current_settings.packenum=4) or (min<low(smallint)) or (max>high(word)) then
savesize:=4
else
if (current_settings.packenum=2) or (min<low(shortint)) or (max>high(byte)) then
savesize:=2
else
savesize:=1;
end;
function tenumdef.packedbitsize: aint;
var
sizeval: tconstexprint;
power: longint;
begin
result := 0;
if (minval >= 0) and
(maxval <= 1) then
result := 1
else
begin
if (minval>=0) then
sizeval:=maxval
else
{ don't count 0 twice }
sizeval:=(cutils.max(-minval,maxval)*2)-1;
{ 256 must become 512 etc. }
nextpowerof2(sizeval+1,power);
result := power;
end;
end;
procedure tenumdef.setmax(_max:aint);
begin
maxval:=_max;
calcsavesize;
end;
procedure tenumdef.setmin(_min:aint);
begin
minval:=_min;
calcsavesize;
end;
function tenumdef.min:aint;
begin
min:=minval;
end;
function tenumdef.max:aint;
begin
max:=maxval;
end;
procedure tenumdef.buildderef;
begin
inherited buildderef;
basedefderef.build(basedef);
end;
procedure tenumdef.deref;
begin
inherited deref;
basedef:=tenumdef(basedefderef.resolve);
{ restart ordering }
firstenum:=nil;
end;
procedure tenumdef.derefimpl;
begin
if assigned(basedef) and
(firstenum=nil) then
begin
firstenum:=basedef.firstenum;
while assigned(firstenum) and (tenumsym(firstenum).value<>minval) do
firstenum:=tenumsym(firstenum).nextenum;
end;
end;
procedure tenumdef.ppuwrite(ppufile:tcompilerppufile);
begin
inherited ppuwrite(ppufile);
ppufile.putderef(basedefderef);
ppufile.putaint(min);
ppufile.putaint(max);
ppufile.putaint(savesize);
ppufile.writeentry(ibenumdef);
end;
function tenumdef.is_publishable : boolean;
begin
is_publishable:=true;
end;
function tenumdef.GetTypeName : string;
begin
GetTypeName:='<enumeration type>';
end;
{****************************************************************************
TORDDEF
****************************************************************************}
constructor torddef.create(t : tordtype;v,b : TConstExprInt);
begin
inherited create(orddef);
low:=v;
high:=b;
ordtype:=t;
setsize;
end;
constructor torddef.ppuload(ppufile:tcompilerppufile);
begin
inherited ppuload(orddef,ppufile);
ordtype:=tordtype(ppufile.getbyte);
low:=ppufile.getexprint;
high:=ppufile.getexprint;
setsize;
end;
function torddef.getcopy : tstoreddef;
begin
result:=torddef.create(ordtype,low,high);
result.typ:=orddef;
torddef(result).low:=low;
torddef(result).high:=high;
torddef(result).ordtype:=ordtype;
torddef(result).savesize:=savesize;
end;
function torddef.alignment:shortint;
begin
if (target_info.system = system_i386_darwin) and
(ordtype in [s64bit,u64bit]) then
result := 4
else
result := inherited alignment;
end;
procedure torddef.setsize;
const
sizetbl : array[tordtype] of longint = (
0,
1,2,4,8,
1,2,4,8,
1,1,2,4,8,
1,2,8
);
begin
savesize:=sizetbl[ordtype];
end;
function torddef.packedbitsize: aint;
var
sizeval: tconstexprint;
power: longint;
begin
result := 0;
if ordtype = uvoid then
exit;
if (ordtype = u64bit) or
((ordtype = s64bit) and
((low <= (system.low(int64) div 2)) or
(high > (system.high(int64) div 2)))) then
result := 64
else if (low >= 0) and
(high <= 1) then
result := 1
else
begin
if (low>=0) then
sizeval:=high
else
{ don't count 0 twice }
sizeval:=(cutils.max(-low,high)*2)-1;
{ 256 must become 512 etc. }
nextpowerof2(sizeval+1,power);
result := power;
end;
end;
function torddef.getvardef : longint;
const
basetype2vardef : array[tordtype] of longint = (
varUndefined,
varbyte,varqword,varlongword,varqword,
varshortint,varsmallint,varinteger,varint64,
varboolean,varboolean,varboolean,varUndefined,varUndefined,
varUndefined,varUndefined,varCurrency);
begin
result:=basetype2vardef[ordtype];
end;
procedure torddef.ppuwrite(ppufile:tcompilerppufile);
begin
inherited ppuwrite(ppufile);
ppufile.putbyte(byte(ordtype));
ppufile.putexprint(low);
ppufile.putexprint(high);
ppufile.writeentry(iborddef);
end;
function torddef.is_publishable : boolean;
begin
is_publishable:=(ordtype<>uvoid);
end;
function torddef.GetTypeName : string;
const
names : array[tordtype] of string[20] = (
'untyped',
'Byte','Word','DWord','QWord',
'ShortInt','SmallInt','LongInt','Int64',
'Boolean','ByteBool','WordBool','LongBool','QWordBool',
'Char','WideChar','Currency');
begin
GetTypeName:=names[ordtype];
end;
{****************************************************************************
TFLOATDEF
****************************************************************************}
constructor tfloatdef.create(t : tfloattype);
begin
inherited create(floatdef);
floattype:=t;
setsize;
end;
constructor tfloatdef.ppuload(ppufile:tcompilerppufile);
begin
inherited ppuload(floatdef,ppufile);
floattype:=tfloattype(ppufile.getbyte);
setsize;
end;
function tfloatdef.getcopy : tstoreddef;
begin
result:=tfloatdef.create(floattype);
result.typ:=floatdef;
tfloatdef(result).savesize:=savesize;
end;
function tfloatdef.alignment:shortint;
begin
if (target_info.system = system_i386_darwin) then
case floattype of
s80real : result:=16;
s64real,
s64currency,
s64comp : result:=4;
else
result := inherited alignment;
end
else
result := inherited alignment;
end;
procedure tfloatdef.setsize;
begin
case floattype of
s32real : savesize:=4;
s80real : savesize:=10;
s64real,
s64currency,
s64comp : savesize:=8;
else
savesize:=0;
end;
end;
function tfloatdef.getvardef : longint;
const
floattype2vardef : array[tfloattype] of longint = (
varSingle,varDouble,varUndefined,
varUndefined,varCurrency,varUndefined);
begin
if (upper(typename)='TDATETIME') and
assigned(owner) and
assigned(owner.name) and
(owner.name^='SYSTEM') then
result:=varDate
else
result:=floattype2vardef[floattype];
end;
procedure tfloatdef.ppuwrite(ppufile:tcompilerppufile);
begin
inherited ppuwrite(ppufile);
ppufile.putbyte(byte(floattype));
ppufile.writeentry(ibfloatdef);
end;
function tfloatdef.is_publishable : boolean;
begin
is_publishable:=true;
end;
function tfloatdef.GetTypeName : string;
const
names : array[tfloattype] of string[20] = (
'Single','Double','Extended','Comp','Currency','Float128');
begin
GetTypeName:=names[floattype];
end;
{****************************************************************************
TFILEDEF
****************************************************************************}
constructor tfiledef.createtext;
begin
inherited create(filedef);
filetyp:=ft_text;
typedfiledef:=nil;
setsize;
end;
constructor tfiledef.createuntyped;
begin
inherited create(filedef);
filetyp:=ft_untyped;
typedfiledef:=nil;
setsize;
end;
constructor tfiledef.createtyped(def:tdef);
begin
inherited create(filedef);
filetyp:=ft_typed;
typedfiledef:=def;
setsize;
end;
constructor tfiledef.ppuload(ppufile:tcompilerppufile);
begin
inherited ppuload(filedef,ppufile);
filetyp:=tfiletyp(ppufile.getbyte);
if filetyp=ft_typed then
ppufile.getderef(typedfiledefderef)
else
typedfiledef:=nil;
setsize;
end;
function tfiledef.getcopy : tstoreddef;
begin
case filetyp of
ft_typed:
result:=tfiledef.createtyped(typedfiledef);
ft_untyped:
result:=tfiledef.createuntyped;
ft_text:
result:=tfiledef.createtext;
else
internalerror(2004121201);
end;
end;
procedure tfiledef.buildderef;
begin
inherited buildderef;
if filetyp=ft_typed then
typedfiledefderef.build(typedfiledef);
end;
procedure tfiledef.deref;
begin
inherited deref;
if filetyp=ft_typed then
typedfiledef:=tdef(typedfiledefderef.resolve);
end;
procedure tfiledef.setsize;
begin
{$ifdef cpu64bitaddr}
case filetyp of
ft_text :
if target_info.system in [system_x86_64_win64,system_ia64_win64] then
savesize:=632{+8}
else
savesize:=628{+8};
ft_typed,
ft_untyped :
if target_info.system in [system_x86_64_win64,system_ia64_win64] then
savesize:=372
else
savesize:=368;
end;
{$else cpu64bitaddr}
case filetyp of
ft_text :
savesize:=592{+4};
ft_typed,
ft_untyped :
savesize:=332;
end;
{$endif cpu64bitaddr}
end;
procedure tfiledef.ppuwrite(ppufile:tcompilerppufile);
begin
inherited ppuwrite(ppufile);
ppufile.putbyte(byte(filetyp));
if filetyp=ft_typed then
ppufile.putderef(typedfiledefderef);
ppufile.writeentry(ibfiledef);
end;
function tfiledef.GetTypeName : string;
begin
case filetyp of
ft_untyped:
GetTypeName:='File';
ft_typed:
GetTypeName:='File Of '+typedfiledef.typename;
ft_text:
GetTypeName:='Text'
end;
end;
function tfiledef.getmangledparaname : string;
begin
case filetyp of
ft_untyped:
getmangledparaname:='FILE';
ft_typed:
getmangledparaname:='FILE$OF$'+typedfiledef.mangledparaname;
ft_text:
getmangledparaname:='TEXT'
end;
end;
{****************************************************************************
TVARIANTDEF
****************************************************************************}
constructor tvariantdef.create(v : tvarianttype);
begin
inherited create(variantdef);
varianttype:=v;
setsize;
end;
constructor tvariantdef.ppuload(ppufile:tcompilerppufile);
begin
inherited ppuload(variantdef,ppufile);
varianttype:=tvarianttype(ppufile.getbyte);
setsize;
end;
function tvariantdef.getcopy : tstoreddef;
begin
result:=tvariantdef.create(varianttype);
end;
procedure tvariantdef.ppuwrite(ppufile:tcompilerppufile);
begin
inherited ppuwrite(ppufile);
ppufile.putbyte(byte(varianttype));
ppufile.writeentry(ibvariantdef);
end;
function tvariantdef.getvardef : longint;
begin
Result:=varVariant;
end;
procedure tvariantdef.setsize;
begin
{$ifdef cpu64bitaddr}
savesize:=24;
{$else cpu64bitaddr}
savesize:=16;
{$endif cpu64bitaddr}
end;
function tvariantdef.GetTypeName : string;
begin
case varianttype of
vt_normalvariant:
GetTypeName:='Variant';
vt_olevariant:
GetTypeName:='OleVariant';
end;
end;
function tvariantdef.needs_inittable : boolean;
begin
needs_inittable:=true;
end;
function tvariantdef.is_publishable : boolean;
begin
is_publishable:=true;
end;
{****************************************************************************
TABSTRACtpointerdef
****************************************************************************}
constructor tabstractpointerdef.create(dt:tdeftyp;def:tdef);
begin
inherited create(dt);
pointeddef:=def;
savesize:=sizeof(pint);
end;
constructor tabstractpointerdef.ppuload(dt:tdeftyp;ppufile:tcompilerppufile);
begin
inherited ppuload(dt,ppufile);
ppufile.getderef(pointeddefderef);
savesize:=sizeof(pint);
end;
procedure tabstractpointerdef.buildderef;
begin
inherited buildderef;
pointeddefderef.build(pointeddef);
end;
procedure tabstractpointerdef.deref;
begin
inherited deref;
pointeddef:=tdef(pointeddefderef.resolve);
end;
procedure tabstractpointerdef.ppuwrite(ppufile:tcompilerppufile);
begin
inherited ppuwrite(ppufile);
ppufile.putderef(pointeddefderef);
end;
{****************************************************************************
tpointerdef
****************************************************************************}
constructor tpointerdef.create(def:tdef);
begin
inherited create(pointerdef,def);
is_far:=false;
end;
constructor tpointerdef.createfar(def:tdef);
begin
inherited create(pointerdef,def);
is_far:=true;
end;
constructor tpointerdef.ppuload(ppufile:tcompilerppufile);
begin
inherited ppuload(pointerdef,ppufile);
is_far:=(ppufile.getbyte<>0);
end;
function tpointerdef.getcopy : tstoreddef;
begin
result:=tpointerdef.create(pointeddef);
tpointerdef(result).is_far:=is_far;
tpointerdef(result).savesize:=savesize;
end;
procedure tpointerdef.ppuwrite(ppufile:tcompilerppufile);
begin
inherited ppuwrite(ppufile);
ppufile.putbyte(byte(is_far));
ppufile.writeentry(ibpointerdef);
end;
function tpointerdef.GetTypeName : string;
begin
if is_far then
GetTypeName:='^'+pointeddef.typename+';far'
else
GetTypeName:='^'+pointeddef.typename;
end;
{****************************************************************************
TCLASSREFDEF
****************************************************************************}
constructor tclassrefdef.create(def:tdef);
begin
inherited create(classrefdef,def);
end;
constructor tclassrefdef.ppuload(ppufile:tcompilerppufile);
begin
inherited ppuload(classrefdef,ppufile);
end;
procedure tclassrefdef.ppuwrite(ppufile:tcompilerppufile);
begin
inherited ppuwrite(ppufile);
ppufile.writeentry(ibclassrefdef);
end;
function tclassrefdef.GetTypeName : string;
begin
GetTypeName:='Class Of '+pointeddef.typename;
end;
function tclassrefdef.is_publishable : boolean;
begin
result:=true;
end;
{***************************************************************************
TSETDEF
***************************************************************************}
constructor tsetdef.create(def:tdef;low, high : aint);
var
setallocbits: aint;
packedsavesize: aint;
begin
inherited create(setdef);
elementdef:=def;
setmax:=high;
if (current_settings.setalloc=0) then
begin
setbase:=0;
if (high<32) then
savesize:=Sizeof(longint)
else if (high<256) then
savesize:=32
else
savesize:=(high+7) div 8
end
else
begin
setallocbits:=current_settings.setalloc*8;
setbase:=low and not(setallocbits-1);
packedsavesize:=current_settings.setalloc*((((high+setallocbits)-setbase)) DIV setallocbits);
savesize:=packedsavesize;
if savesize=3 then
savesize:=4;
end;
end;
constructor tsetdef.ppuload(ppufile:tcompilerppufile);
begin
inherited ppuload(setdef,ppufile);
ppufile.getderef(elementdefderef);
savesize:=ppufile.getaint;
setbase:=ppufile.getaint;
setmax:=ppufile.getaint;
end;
function tsetdef.getcopy : tstoreddef;
begin
result:=tsetdef.create(elementdef,setbase,setmax);
{ the copy might have been created with a different setalloc setting }
tsetdef(result).savesize:=savesize;
end;
procedure tsetdef.ppuwrite(ppufile:tcompilerppufile);
begin
inherited ppuwrite(ppufile);
ppufile.putderef(elementdefderef);
ppufile.putaint(savesize);
ppufile.putaint(setbase);
ppufile.putaint(setmax);
ppufile.writeentry(ibsetdef);
end;
procedure tsetdef.buildderef;
begin
inherited buildderef;
elementdefderef.build(elementdef);
end;
procedure tsetdef.deref;
begin
inherited deref;
elementdef:=tdef(elementdefderef.resolve);
end;
function tsetdef.is_publishable : boolean;
begin
is_publishable:=savesize in [1,2,4];
end;
function tsetdef.GetTypeName : string;
begin
if assigned(elementdef) then
GetTypeName:='Set Of '+elementdef.typename
else
GetTypeName:='Empty Set';
end;
{***************************************************************************
TFORMALDEF
***************************************************************************}
constructor tformaldef.create(Atyped:boolean);
begin
inherited create(formaldef);
typed:=Atyped;
savesize:=0;
end;
constructor tformaldef.ppuload(ppufile:tcompilerppufile);
begin
inherited ppuload(formaldef,ppufile);
typed:=boolean(ppufile.getbyte);
savesize:=0;
end;
procedure tformaldef.ppuwrite(ppufile:tcompilerppufile);
begin
inherited ppuwrite(ppufile);
ppufile.putbyte(byte(typed));
ppufile.writeentry(ibformaldef);
end;
function tformaldef.GetTypeName : string;
begin
if typed then
GetTypeName:='<Typed formal type>'
else
GetTypeName:='<Formal type>';
end;
{***************************************************************************
TARRAYDEF
***************************************************************************}
constructor tarraydef.create(l,h : aint;def:tdef);
begin
inherited create(arraydef);
lowrange:=l;
highrange:=h;
rangedef:=def;
_elementdef:=nil;
arrayoptions:=[];
end;
constructor tarraydef.create_from_pointer(def:tdef);
begin
{ use -1 so that the elecount will not overflow }
self.create(0,high(aint)-1,s32inttype);
arrayoptions:=[ado_IsConvertedPointer];
setelementdef(def);
end;
constructor tarraydef.ppuload(ppufile:tcompilerppufile);
begin
inherited ppuload(arraydef,ppufile);
{ the addresses are calculated later }
ppufile.getderef(_elementdefderef);
ppufile.getderef(rangedefderef);
lowrange:=ppufile.getaint;
highrange:=ppufile.getaint;
ppufile.getsmallset(arrayoptions);
end;
function tarraydef.getcopy : tstoreddef;
begin
result:=tarraydef.create(lowrange,highrange,rangedef);
tarraydef(result).arrayoptions:=arrayoptions;
tarraydef(result)._elementdef:=_elementdef;
end;
procedure tarraydef.buildderef;
begin
inherited buildderef;
_elementdefderef.build(_elementdef);
rangedefderef.build(rangedef);
end;
procedure tarraydef.deref;
begin
inherited deref;
_elementdef:=tdef(_elementdefderef.resolve);
rangedef:=tdef(rangedefderef.resolve);
end;
procedure tarraydef.ppuwrite(ppufile:tcompilerppufile);
begin
inherited ppuwrite(ppufile);
ppufile.putderef(_elementdefderef);
ppufile.putderef(rangedefderef);
ppufile.putaint(lowrange);
ppufile.putaint(highrange);
ppufile.putsmallset(arrayoptions);
ppufile.writeentry(ibarraydef);
end;
function tarraydef.elesize : aint;
begin
if (ado_IsBitPacked in arrayoptions) then
internalerror(2006080101);
if assigned(_elementdef) then
result:=_elementdef.size
else
result:=0;
end;
function tarraydef.elepackedbitsize : aint;
begin
if not(ado_IsBitPacked in arrayoptions) then
internalerror(2006080102);
if assigned(_elementdef) then
result:=_elementdef.packedbitsize
else
result:=0;
end;
function tarraydef.elecount : aword;
var
qhigh,qlow : qword;
begin
if ado_IsDynamicArray in arrayoptions then
begin
result:=0;
exit;
end;
if (highrange>0) and (lowrange<0) then
begin
qhigh:=highrange;
qlow:=qword(-lowrange);
{ prevent overflow, return 0 to indicate overflow }
if qhigh+qlow>qword(high(aint)-1) then
result:=0
else
result:=qhigh+qlow+1;
end
else
result:=int64(highrange)-lowrange+1;
end;
function tarraydef.size : aint;
var
cachedelecount : aword;
cachedelesize : aint;
begin
if ado_IsDynamicArray in arrayoptions then
begin
size:=sizeof(pint);
exit;
end;
{ Tarraydef.size may never be called for an open array! }
if highrange<lowrange then
internalerror(99080501);
if not (ado_IsBitPacked in arrayoptions) then
cachedelesize:=elesize
else
cachedelesize := elepackedbitsize;
cachedelecount:=elecount;
if (cachedelesize = 0) then
begin
size := 0;
exit;
end;
if (cachedelecount = 0) then
begin
size := -1;
exit;
end;
{ prevent overflow, return -1 to indicate overflow }
{ also make sure we don't need 64/128 bit arithmetic to calculate offsets }
if (cachedelecount > high(aint)) or
((high(aint) div cachedelesize) < cachedelecount) or
{ also lowrange*elesize must be < high(aint) to prevent overflow when
accessing the array, see ncgmem (PFV) }
((high(aint) div cachedelesize) < abs(lowrange)) then
begin
result:=-1;
exit;
end;
if (ado_IsBitPacked in arrayoptions) then
size:=(cachedelesize * cachedelecount + 7) div 8
else
result:=cachedelesize*cachedelecount;
end;
procedure tarraydef.setelementdef(def:tdef);
begin
_elementdef:=def;
if not(
(ado_IsDynamicArray in arrayoptions) or
(ado_IsConvertedPointer in arrayoptions) or
(highrange<lowrange)
) and
(size=-1) then
Message(sym_e_segment_too_large);
end;
function tarraydef.alignment : shortint;
begin
{ alignment of dyn. arrays doesn't depend on the element size }
if (ado_IsDynamicArray in arrayoptions) then
alignment:=size_2_align(sizeof(pint))
{ alignment is the size of the elements }
else if (elementdef.typ in [arraydef,recorddef]) or
((elementdef.typ=objectdef) and
is_object(elementdef)) then
alignment:=elementdef.alignment
else if not (ado_IsBitPacked in arrayoptions) then
alignment:=size_2_align(elesize)
else
alignment:=packedbitsloadsize(elepackedbitsize);
end;
function tarraydef.needs_inittable : boolean;
begin
needs_inittable:=(ado_IsDynamicArray in arrayoptions) or elementdef.needs_inittable;
end;
function tarraydef.GetTypeName : string;
begin
if (ado_IsConstString in arrayoptions) then
result:='Constant String'
else if (ado_isarrayofconst in arrayoptions) or
(ado_isConstructor in arrayoptions) then
begin
if (ado_isvariant in arrayoptions) or ((highrange=-1) and (lowrange=0)) then
GetTypeName:='Array Of Const'
else
GetTypeName:='Array Of Const/Constant Open Array of '+elementdef.typename;
end
else if (ado_IsDynamicArray in arrayoptions) then
GetTypeName:='Dynamic Array Of '+elementdef.typename
else if ((highrange=-1) and (lowrange=0)) then
GetTypeName:='Open Array Of '+elementdef.typename
else
begin
result := '';
if (ado_IsBitPacked in arrayoptions) then
result:='Packed ';
if rangedef.typ=enumdef then
result:=result+'Array['+rangedef.typename+'] Of '+elementdef.typename
else
result:=result+'Array['+tostr(lowrange)+'..'+
tostr(highrange)+'] Of '+elementdef.typename
end;
end;
function tarraydef.getmangledparaname : string;
begin
if ado_isarrayofconst in arrayoptions then
getmangledparaname:='array_of_const'
else
if ((highrange=-1) and (lowrange=0)) then
getmangledparaname:='array_of_'+elementdef.mangledparaname
else
internalerror(200204176);
end;
{***************************************************************************
tabstractrecorddef
***************************************************************************}
function tabstractrecorddef.GetSymtable(t:tGetSymtable):TSymtable;
begin
if t=gs_record then
GetSymtable:=symtable
else
GetSymtable:=nil;
end;
procedure tabstractrecorddef.reset;
begin
inherited reset;
tstoredsymtable(symtable).reset_all_defs;
end;
function tabstractrecorddef.is_packed:boolean;
begin
result:=tabstractrecordsymtable(symtable).is_packed;
end;
{***************************************************************************
trecorddef
***************************************************************************}
constructor trecorddef.create(p : TSymtable);
begin
inherited create(recorddef);
symtable:=p;
symtable.defowner:=self;
isunion:=false;
end;
constructor trecorddef.ppuload(ppufile:tcompilerppufile);
begin
inherited ppuload(recorddef,ppufile);
symtable:=trecordsymtable.create(0);
trecordsymtable(symtable).fieldalignment:=shortint(ppufile.getbyte);
trecordsymtable(symtable).recordalignment:=shortint(ppufile.getbyte);
trecordsymtable(symtable).padalignment:=shortint(ppufile.getbyte);
trecordsymtable(symtable).usefieldalignment:=shortint(ppufile.getbyte);
{ requires usefieldalignment to be set }
trecordsymtable(symtable).datasize:=ppufile.getaint;
trecordsymtable(symtable).ppuload(ppufile);
symtable.defowner:=self;
isunion:=false;
end;
destructor trecorddef.destroy;
begin
if assigned(symtable) then
begin
symtable.free;
symtable:=nil;
end;
inherited destroy;
end;
function trecorddef.getcopy : tstoreddef;
begin
result:=trecorddef.create(symtable.getcopy);
trecorddef(result).isunion:=isunion;
end;
function trecorddef.needs_inittable : boolean;
begin
needs_inittable:=trecordsymtable(symtable).needs_init_final
end;
procedure trecorddef.buildderef;
begin
inherited buildderef;
tstoredsymtable(symtable).buildderef;
end;
procedure trecorddef.deref;
begin
inherited deref;
{ now dereference the definitions }
tstoredsymtable(symtable).deref;
{ assign TGUID? load only from system unit }
if not(assigned(rec_tguid)) and
(upper(typename)='TGUID') and
assigned(owner) and
assigned(owner.name) and
(owner.name^='SYSTEM') then
rec_tguid:=self;
end;
procedure trecorddef.ppuwrite(ppufile:tcompilerppufile);
begin
inherited ppuwrite(ppufile);
ppufile.putbyte(byte(trecordsymtable(symtable).fieldalignment));
ppufile.putbyte(byte(trecordsymtable(symtable).recordalignment));
ppufile.putbyte(byte(trecordsymtable(symtable).padalignment));
ppufile.putbyte(byte(trecordsymtable(symtable).usefieldalignment));
ppufile.putaint(trecordsymtable(symtable).datasize);
ppufile.writeentry(ibrecorddef);
trecordsymtable(symtable).ppuwrite(ppufile);
end;
function trecorddef.size:aint;
begin
result:=trecordsymtable(symtable).datasize;
end;
function trecorddef.alignment:shortint;
begin
alignment:=trecordsymtable(symtable).recordalignment;
end;
function trecorddef.padalignment:shortint;
begin
padalignment := trecordsymtable(symtable).padalignment;
end;
function trecorddef.GetTypeName : string;
begin
GetTypeName:='<record type>'
end;
{***************************************************************************
TABSTRACTPROCDEF
***************************************************************************}
constructor tabstractprocdef.create(dt:tdeftyp;level:byte);
begin
inherited create(dt);
parast:=tparasymtable.create(self,level);
paras:=nil;
minparacount:=0;
maxparacount:=0;
proctypeoption:=potype_none;
proccalloption:=pocall_none;
procoptions:=[];
returndef:=voidtype;
savesize:=sizeof(pint);
requiredargarea:=0;
has_paraloc_info:=false;
location_reset(funcretloc[callerside],LOC_INVALID,OS_NO);
location_reset(funcretloc[calleeside],LOC_INVALID,OS_NO);
end;
destructor tabstractprocdef.destroy;
begin
if assigned(paras) then
begin
{$ifdef MEMDEBUG}
memprocpara.start;
{$endif MEMDEBUG}
paras.free;
paras:=nil;
{$ifdef MEMDEBUG}
memprocpara.stop;
{$endif MEMDEBUG}
end;
if assigned(parast) then
begin
{$ifdef MEMDEBUG}
memprocparast.start;
{$endif MEMDEBUG}
parast.free;
parast:=nil;
{$ifdef MEMDEBUG}
memprocparast.stop;
{$endif MEMDEBUG}
end;
inherited destroy;
end;
procedure tabstractprocdef.count_para(p:TObject;arg:pointer);
begin
if (tsym(p).typ<>paravarsym) then
exit;
inc(plongint(arg)^);
if not(vo_is_hidden_para in tparavarsym(p).varoptions) then
begin
if not assigned(tparavarsym(p).defaultconstsym) then
inc(minparacount);
inc(maxparacount);
end;
end;
procedure tabstractprocdef.insert_para(p:TObject;arg:pointer);
begin
if (tsym(p).typ<>paravarsym) then
exit;
paras.add(p);
end;
procedure tabstractprocdef.calcparas;
var
paracount : longint;
begin
{ This can already be assigned when
we need to reresolve this unit (PFV) }
if assigned(paras) then
paras.free;
paras:=tparalist.create(false);
paracount:=0;
minparacount:=0;
maxparacount:=0;
parast.SymList.ForEachCall(@count_para,@paracount);
paras.capacity:=paracount;
{ Insert parameters in table }
parast.SymList.ForEachCall(@insert_para,nil);
{ Order parameters }
paras.sortparas;
end;
procedure tabstractprocdef.buildderef;
begin
{ released procdef? }
if not assigned(parast) then
exit;
inherited buildderef;
returndefderef.build(returndef);
{ parast }
tparasymtable(parast).buildderef;
end;
procedure tabstractprocdef.deref;
begin
inherited deref;
returndef:=tdef(returndefderef.resolve);
{ parast }
tparasymtable(parast).deref;
{ recalculated parameters }
calcparas;
end;
constructor tabstractprocdef.ppuload(dt:tdeftyp;ppufile:tcompilerppufile);
var
b : byte;
begin
inherited ppuload(dt,ppufile);
parast:=nil;
Paras:=nil;
minparacount:=0;
maxparacount:=0;
ppufile.getderef(returndefderef);
{$warning TODO remove fpu_used loading}
ppufile.getbyte;
proctypeoption:=tproctypeoption(ppufile.getbyte);
proccalloption:=tproccalloption(ppufile.getbyte);
ppufile.getnormalset(procoptions);
location_reset(funcretloc[callerside],LOC_INVALID,OS_NO);
location_reset(funcretloc[calleeside],LOC_INVALID,OS_NO);
if po_explicitparaloc in procoptions then
begin
b:=ppufile.getbyte;
if b<>sizeof(funcretloc[callerside]) then
internalerror(200411154);
ppufile.getdata(funcretloc[callerside],sizeof(funcretloc[callerside]));
end;
savesize:=sizeof(pint);
has_paraloc_info:=(po_explicitparaloc in procoptions);
end;
procedure tabstractprocdef.ppuwrite(ppufile:tcompilerppufile);
var
oldintfcrc : boolean;
begin
{ released procdef? }
if not assigned(parast) then
exit;
inherited ppuwrite(ppufile);
ppufile.putderef(returndefderef);
oldintfcrc:=ppufile.do_interface_crc;
ppufile.do_interface_crc:=false;
ppufile.putbyte(0);
ppufile.putbyte(ord(proctypeoption));
ppufile.putbyte(ord(proccalloption));
ppufile.putnormalset(procoptions);
ppufile.do_interface_crc:=oldintfcrc;
if (po_explicitparaloc in procoptions) then
begin
{ Make a 'valid' funcretloc for procedures }
ppufile.putbyte(sizeof(funcretloc[callerside]));
ppufile.putdata(funcretloc[callerside],sizeof(funcretloc[callerside]));
end;
end;
function tabstractprocdef.typename_paras(showhidden:boolean) : string;
var
hs,s : string;
hp : TParavarsym;
hpc : tconstsym;
first : boolean;
i : integer;
begin
s:='';
first:=true;
for i:=0 to paras.count-1 do
begin
hp:=tparavarsym(paras[i]);
if not(vo_is_hidden_para in hp.varoptions) or
(showhidden) then
begin
if first then
begin
s:=s+'(';
first:=false;
end
else
s:=s+',';
if vo_is_hidden_para in hp.varoptions then
s:=s+'<';
case hp.varspez of
vs_var :
s:=s+'var';
vs_const :
s:=s+'const';
vs_out :
s:=s+'out';
end;
if assigned(hp.vardef.typesym) then
begin
if s<>'(' then
s:=s+' ';
hs:=hp.vardef.typesym.realname;
if hs[1]<>'$' then
s:=s+hp.vardef.typesym.realname
else
s:=s+hp.vardef.GetTypeName;
end
else
s:=s+hp.vardef.GetTypeName;
{ default value }
if assigned(hp.defaultconstsym) then
begin
hpc:=tconstsym(hp.defaultconstsym);
hs:='';
case hpc.consttyp of
conststring,
constresourcestring :
hs:=strpas(pchar(hpc.value.valueptr));
constreal :
str(pbestreal(hpc.value.valueptr)^,hs);
constpointer :
hs:=tostr(hpc.value.valueordptr);
constord :
begin
if is_boolean(hpc.constdef) then
begin
if hpc.value.valueord<>0 then
hs:='TRUE'
else
hs:='FALSE';
end
else
hs:=tostr(hpc.value.valueord);
end;
constnil :
hs:='nil';
constset :
hs:='<set>';
end;
if hs<>'' then
s:=s+'="'+hs+'"';
end;
if vo_is_hidden_para in hp.varoptions then
s:=s+'>';
end;
end;
if not first then
s:=s+')';
if (po_varargs in procoptions) then
s:=s+';VarArgs';
typename_paras:=s;
end;
function tabstractprocdef.is_methodpointer:boolean;
begin
result:=false;
end;
function tabstractprocdef.is_addressonly:boolean;
begin
result:=true;
end;
{***************************************************************************
TPROCDEF
***************************************************************************}
constructor tprocdef.create(level:byte);
begin
inherited create(procdef,level);
localst:=tlocalsymtable.create(self,parast.symtablelevel);
_mangledname:=nil;
fileinfo:=current_filepos;
extnumber:=$ffff;
aliasnames:=TCmdStrList.create;
funcretsym:=nil;
forwarddef:=true;
interfacedef:=false;
hasforward:=false;
_class := nil;
import_dll:=nil;
import_name:=nil;
import_nr:=0;
inlininginfo:=nil;
{$ifdef i386}
fpu_used:=maxfpuregs;
{$endif i386}
end;
constructor tprocdef.ppuload(ppufile:tcompilerppufile);
var
i,aliasnamescount : longint;
item : TCmdStrListItem;
level : byte;
begin
inherited ppuload(procdef,ppufile);
if po_has_mangledname in procoptions then
_mangledname:=stringdup(ppufile.getstring)
else
_mangledname:=nil;
extnumber:=ppufile.getword;
level:=ppufile.getbyte;
ppufile.getderef(_classderef);
ppufile.getderef(procsymderef);
ppufile.getposinfo(fileinfo);
ppufile.getsmallset(symoptions);
{$ifdef powerpc}
{ library symbol for AmigaOS/MorphOS }
ppufile.getderef(libsymderef);
{$endif powerpc}
{ import stuff }
if po_has_importdll in procoptions then
import_dll:=stringdup(ppufile.getstring)
else
import_dll:=nil;
if po_has_importname in procoptions then
import_name:=stringdup(ppufile.getstring)
else
import_name:=nil;
import_nr:=ppufile.getword;
if (po_msgint in procoptions) then
messageinf.i:=ppufile.getlongint;
if (po_msgstr in procoptions) then
messageinf.str:=stringdup(ppufile.getstring);
if (po_dispid in procoptions) then
dispid:=ppufile.getlongint;
{ inline stuff }
if (po_has_inlininginfo in procoptions) then
begin
ppufile.getderef(funcretsymderef);
new(inlininginfo);
ppufile.getsmallset(inlininginfo^.flags);
end
else
begin
inlininginfo:=nil;
funcretsym:=nil;
end;
aliasnames:=TCmdStrList.create;
{ count alias names }
aliasnamescount:=ppufile.getbyte;
for i:=1 to aliasnamescount do
aliasnames.insert(ppufile.getstring);
{ load para symtable }
parast:=tparasymtable.create(self,level);
tparasymtable(parast).ppuload(ppufile);
{ load local symtable }
if (po_has_inlininginfo in procoptions) then
begin
localst:=tlocalsymtable.create(self,level);
tlocalsymtable(localst).ppuload(ppufile);
end
else
localst:=nil;
{ inline stuff }
if (po_has_inlininginfo in procoptions) then
inlininginfo^.code:=ppuloadnodetree(ppufile);
{ default values for no persistent data }
if (cs_link_deffile in current_settings.globalswitches) and
(tf_need_export in target_info.flags) and
(po_exports in procoptions) then
deffile.AddExport(mangledname);
forwarddef:=false;
interfacedef:=false;
hasforward:=false;
{ Disable po_has_inlining until the derefimpl is done }
exclude(procoptions,po_has_inlininginfo);
{$ifdef i386}
fpu_used:=maxfpuregs;
{$endif i386}
end;
destructor tprocdef.destroy;
begin
aliasnames.free;
aliasnames:=nil;
if assigned(localst) and
(localst.symtabletype<>staticsymtable) then
begin
{$ifdef MEMDEBUG}
memproclocalst.start;
{$endif MEMDEBUG}
localst.free;
localst:=nil;
{$ifdef MEMDEBUG}
memproclocalst.start;
{$endif MEMDEBUG}
end;
if assigned(inlininginfo) then
begin
{$ifdef MEMDEBUG}
memprocnodetree.start;
{$endif MEMDEBUG}
tnode(inlininginfo^.code).free;
{$ifdef MEMDEBUG}
memprocnodetree.start;
{$endif MEMDEBUG}
dispose(inlininginfo);
inlininginfo:=nil;
end;
stringdispose(resultname);
stringdispose(import_dll);
stringdispose(import_name);
if (po_msgstr in procoptions) then
stringdispose(messageinf.str);
if assigned(_mangledname) then
begin
{$ifdef MEMDEBUG}
memmanglednames.start;
{$endif MEMDEBUG}
stringdispose(_mangledname);
{$ifdef MEMDEBUG}
memmanglednames.stop;
{$endif MEMDEBUG}
end;
inherited destroy;
end;
procedure tprocdef.ppuwrite(ppufile:tcompilerppufile);
var
oldintfcrc : boolean;
aliasnamescount : longint;
item : TCmdStrListItem;
begin
{ released procdef? }
if not assigned(parast) then
exit;
inherited ppuwrite(ppufile);
if po_has_mangledname in procoptions then
ppufile.putstring(_mangledname^);
ppufile.putword(extnumber);
ppufile.putbyte(parast.symtablelevel);
ppufile.putderef(_classderef);
ppufile.putderef(procsymderef);
ppufile.putposinfo(fileinfo);
ppufile.putsmallset(symoptions);
{$ifdef powerpc}
{ library symbol for AmigaOS/MorphOS }
ppufile.putderef(libsymderef);
{$endif powerpc}
{ import }
if po_has_importdll in procoptions then
ppufile.putstring(import_dll^);
if po_has_importname in procoptions then
ppufile.putstring(import_name^);
ppufile.putword(import_nr);
if (po_msgint in procoptions) then
ppufile.putlongint(messageinf.i);
if (po_msgstr in procoptions) then
ppufile.putstring(messageinf.str^);
if (po_dispid in procoptions) then
ppufile.putlongint(dispid);
{ inline stuff }
oldintfcrc:=ppufile.do_crc;
ppufile.do_crc:=false;
if (po_has_inlininginfo in procoptions) then
begin
ppufile.putderef(funcretsymderef);
ppufile.putsmallset(inlininginfo^.flags);
end;
{ count alias names }
aliasnamescount:=0;
item:=TCmdStrListItem(aliasnames.first);
while assigned(item) do
begin
inc(aliasnamescount);
item:=TCmdStrListItem(item.next);
end;
if aliasnamescount>255 then
internalerror(200711021);
ppufile.putbyte(aliasnamescount);
item:=TCmdStrListItem(aliasnames.first);
while assigned(item) do
begin
ppufile.putstring(item.str);
item:=TCmdStrListItem(item.next);
end;
ppufile.do_crc:=oldintfcrc;
{ write this entry }
ppufile.writeentry(ibprocdef);
{ Save the para symtable, this is taken from the interface }
tparasymtable(parast).ppuwrite(ppufile);
{ save localsymtable for inline procedures or when local
browser info is requested, this has no influence on the crc }
if (po_has_inlininginfo in procoptions) then
begin
oldintfcrc:=ppufile.do_crc;
ppufile.do_crc:=false;
tlocalsymtable(localst).ppuwrite(ppufile);
ppufile.do_crc:=oldintfcrc;
end;
{ node tree for inlining }
oldintfcrc:=ppufile.do_crc;
ppufile.do_crc:=false;
if (po_has_inlininginfo in procoptions) then
ppuwritenodetree(ppufile,inlininginfo^.code);
ppufile.do_crc:=oldintfcrc;
end;
procedure tprocdef.reset;
begin
inherited reset;
procstarttai:=nil;
procendtai:=nil;
end;
function tprocdef.fullprocname(showhidden:boolean):string;
var
s : string;
t : ttoken;
begin
{$ifdef EXTDEBUG}
showhidden:=true;
{$endif EXTDEBUG}
s:='';
if owner.symtabletype=localsymtable then
s:=s+'local ';
if assigned(_class) then
begin
if po_classmethod in procoptions then
s:=s+'class ';
s:=s+_class.objrealname^+'.';
end;
if proctypeoption=potype_operator then
begin
for t:=NOTOKEN to last_overloaded do
if procsym.realname='$'+overloaded_names[t] then
begin
s:='operator '+arraytokeninfo[t].str+typename_paras(showhidden);
break;
end;
end
else
s:=s+procsym.realname+typename_paras(showhidden);
case proctypeoption of
potype_constructor:
s:='constructor '+s;
potype_destructor:
s:='destructor '+s;
else
if assigned(returndef) and
not(is_void(returndef)) then
s:=s+':'+returndef.GetTypeName;
end;
{ forced calling convention? }
if (po_hascallingconvention in procoptions) then
s:=s+';'+ProcCallOptionStr[proccalloption];
fullprocname:=s;
end;
function tprocdef.is_methodpointer:boolean;
begin
result:=assigned(_class);
end;
function tprocdef.is_addressonly:boolean;
begin
result:=assigned(owner) and
(owner.symtabletype<>ObjectSymtable);
end;
function tprocdef.is_visible_for_object(currobjdef,contextobjdef:tobjectdef):boolean;
var
contextst : TSymtable;
begin
result:=false;
{ Support passing a context in which module we are to find protected members }
if assigned(contextobjdef) then
contextst:=contextobjdef.owner
else
contextst:=nil;
{ private symbols are allowed when we are in the same
module as they are defined }
if (sp_private in symoptions) and
(owner.defowner.owner.symtabletype in [globalsymtable,staticsymtable]) and
not(owner.defowner.owner.iscurrentunit or (owner.defowner.owner=contextst)) then
exit;
if (sp_strictprivate in symoptions) then
begin
result:=currobjdef=tobjectdef(owner.defowner);
exit;
end;
if (sp_strictprotected in symoptions) then
begin
result:=assigned(currobjdef) and
currobjdef.is_related(tobjectdef(owner.defowner));
exit;
end;
{ protected symbols are visible in the module that defines them and
also visible to related objects. The related object must be defined
in the current module }
if (sp_protected in symoptions) and
(
(
(owner.defowner.owner.symtabletype in [globalsymtable,staticsymtable]) and
not((owner.defowner.owner.iscurrentunit) or (owner.defowner.owner=contextst))
) and
not(
assigned(currobjdef) and
(currobjdef.owner.symtabletype in [globalsymtable,staticsymtable]) and
(currobjdef.owner.iscurrentunit) and
currobjdef.is_related(tobjectdef(owner.defowner))
)
) then
exit;
result:=true;
end;
function tprocdef.GetSymtable(t:tGetSymtable):TSymtable;
begin
case t of
gs_local :
GetSymtable:=localst;
gs_para :
GetSymtable:=parast;
else
GetSymtable:=nil;
end;
end;
procedure tprocdef.buildderef;
begin
inherited buildderef;
_classderef.build(_class);
{ procsym that originaly defined this definition, should be in the
same symtable }
procsymderef.build(procsym);
{$ifdef powerpc}
{ library symbol for AmigaOS/MorphOS }
libsymderef.build(libsym);
{$endif powerpc}
end;
procedure tprocdef.buildderefimpl;
begin
inherited buildderefimpl;
{ Localst is not available for main/unit init }
if assigned(localst) then
begin
tlocalsymtable(localst).buildderef;
tlocalsymtable(localst).buildderefimpl;
end;
{ inline tree }
if (po_has_inlininginfo in procoptions) then
begin
funcretsymderef.build(funcretsym);
inlininginfo^.code.buildderefimpl;
end;
end;
procedure tprocdef.deref;
begin
inherited deref;
_class:=tobjectdef(_classderef.resolve);
{ procsym that originaly defined this definition, should be in the
same symtable }
procsym:=tprocsym(procsymderef.resolve);
{$ifdef powerpc}
{ library symbol for AmigaOS/MorphOS }
libsym:=tsym(libsymderef.resolve);
{$endif powerpc}
end;
procedure tprocdef.derefimpl;
begin
{ Enable has_inlininginfo when the inlininginfo
structure is available. The has_inlininginfo was disabled
after the load, since the data was invalid }
if assigned(inlininginfo) then
include(procoptions,po_has_inlininginfo);
{ Locals }
if assigned(localst) then
begin
tlocalsymtable(localst).deref;
tlocalsymtable(localst).derefimpl;
end;
{ Inline }
if (po_has_inlininginfo in procoptions) then
begin
inlininginfo^.code.derefimpl;
{ funcretsym, this is always located in the localst }
funcretsym:=tsym(funcretsymderef.resolve);
end
else
begin
{ safety }
funcretsym:=nil;
end;
end;
function tprocdef.GetTypeName : string;
begin
GetTypeName := FullProcName(false);
end;
function tprocdef.mangledname : string;
var
hp : TParavarsym;
hs : string;
crc : dword;
newlen,
oldlen,
i : integer;
begin
if assigned(_mangledname) then
begin
{$ifdef compress}
mangledname:=minilzw_decode(_mangledname^);
{$else}
mangledname:=_mangledname^;
{$endif}
exit;
end;
{ we need to use the symtable where the procsym is inserted,
because that is visible to the world }
mangledname:=make_mangledname('',procsym.owner,procsym.name);
oldlen:=length(mangledname);
{ add parameter types }
for i:=0 to paras.count-1 do
begin
hp:=tparavarsym(paras[i]);
if not(vo_is_hidden_para in hp.varoptions) then
mangledname:=mangledname+'$'+hp.vardef.mangledparaname;
end;
{ add resultdef, add $$ as separator to make it unique from a
parameter separator }
if not is_void(returndef) then
mangledname:=mangledname+'$$'+returndef.mangledparaname;
newlen:=length(mangledname);
{ Replace with CRC if the parameter line is very long }
if (newlen-oldlen>12) and
((newlen>128) or (newlen-oldlen>64)) then
begin
crc:=0;
for i:=0 to paras.count-1 do
begin
hp:=tparavarsym(paras[i]);
if not(vo_is_hidden_para in hp.varoptions) then
begin
hs:=hp.vardef.mangledparaname;
crc:=UpdateCrc32(crc,hs[1],length(hs));
end;
end;
hs:=hp.vardef.mangledparaname;
crc:=UpdateCrc32(crc,hs[1],length(hs));
mangledname:=Copy(mangledname,1,oldlen)+'$crc'+hexstr(crc,8);
end;
{$ifdef compress}
_mangledname:=stringdup(minilzw_encode(mangledname));
{$else}
_mangledname:=stringdup(mangledname);
{$endif}
end;
function tprocdef.cplusplusmangledname : string;
function getcppparaname(p : tdef) : string;
const
ordtype2str : array[tordtype] of string[2] = (
'',
'Uc','Us','Ui','Us',
'Sc','s','i','x',
'b','b','b','b','b',
'c','w','x');
var
s : string;
begin
case p.typ of
orddef:
s:=ordtype2str[torddef(p).ordtype];
pointerdef:
s:='P'+getcppparaname(tpointerdef(p).pointeddef);
else
internalerror(2103001);
end;
getcppparaname:=s;
end;
var
s,s2 : string;
hp : TParavarsym;
i : integer;
begin
{ outdated gcc 2.x name mangling scheme }
{$ifdef NAMEMANGLING_GCC2}
s := procsym.realname;
if procsym.owner.symtabletype=ObjectSymtable then
begin
s2:=upper(tobjectdef(procsym.owner.defowner).objrealname^);
case proctypeoption of
potype_destructor:
s:='_$_'+tostr(length(s2))+s2;
potype_constructor:
s:='___'+tostr(length(s2))+s2;
else
s:='_'+s+'__'+tostr(length(s2))+s2;
end;
end
else s:=s+'__';
s:=s+'F';
{ concat modifiers }
{ !!!!! }
{ now we handle the parameters }
if maxparacount>0 then
begin
for i:=0 to paras.count-1 do
begin
hp:=tparavarsym(paras[i]);
s2:=getcppparaname(hp.vardef);
if hp.varspez in [vs_var,vs_out] then
s2:='R'+s2;
s:=s+s2;
end;
end
else
s:=s+'v';
cplusplusmangledname:=s;
{$endif NAMEMANGLING_GCC2}
{ gcc 3.x name mangling scheme }
if procsym.owner.symtabletype=ObjectSymtable then
begin
s:='_ZN';
s2:=tobjectdef(procsym.owner.defowner).objrealname^;
s:=s+tostr(length(s2))+s2;
case proctypeoption of
potype_constructor:
s:=s+'C1';
potype_destructor:
s:=s+'D1';
else
s:=s+tostr(length(procsym.realname))+procsym.realname;
end;
s:=s+'E';
end
else
s:=procsym.realname;
{ now we handle the parameters }
if maxparacount>0 then
begin
for i:=0 to paras.count-1 do
begin
hp:=tparavarsym(paras[i]);
s2:=getcppparaname(hp.vardef);
if hp.varspez in [vs_var,vs_out] then
s2:='R'+s2;
s:=s+s2;
end;
end
else
s:=s+'v';
cplusplusmangledname:=s;
end;
procedure tprocdef.setmangledname(const s : string);
begin
{ This is not allowed anymore, the forward declaration
already needs to create the correct mangledname, no changes
afterwards are allowed (PFV) }
{ Exception: interface definitions in mode macpas, since in that }
{ case no reference to the old name can exist yet (JM) }
if assigned(_mangledname) then
if ((m_mac in current_settings.modeswitches) and
(interfacedef)) then
stringdispose(_mangledname)
else
internalerror(200411171);
{$ifdef compress}
_mangledname:=stringdup(minilzw_encode(s));
{$else}
_mangledname:=stringdup(s);
{$endif}
include(procoptions,po_has_mangledname);
end;
{***************************************************************************
TPROCVARDEF
***************************************************************************}
constructor tprocvardef.create(level:byte);
begin
inherited create(procvardef,level);
end;
constructor tprocvardef.ppuload(ppufile:tcompilerppufile);
begin
inherited ppuload(procvardef,ppufile);
{ load para symtable }
parast:=tparasymtable.create(self,unknown_level);
tparasymtable(parast).ppuload(ppufile);
end;
function tprocvardef.getcopy : tstoreddef;
var
i : tcallercallee;
j : longint;
begin
result:=tprocvardef.create(parast.symtablelevel);
tprocvardef(result).returndef:=returndef;
tprocvardef(result).returndefderef:=returndefderef;
tprocvardef(result).parast:=parast.getcopy;
tprocvardef(result).savesize:=savesize;
{ create paralist copy }
tprocvardef(result).paras:=tparalist.create(false);
tprocvardef(result).paras.count:=paras.count;
for j:=0 to paras.count-1 do
tprocvardef(result).paras[j]:=paras[j];
tprocvardef(result).proctypeoption:=proctypeoption;
tprocvardef(result).proccalloption:=proccalloption;
tprocvardef(result).procoptions:=procoptions;
tprocvardef(result).requiredargarea:=requiredargarea;
tprocvardef(result).maxparacount:=maxparacount;
tprocvardef(result).minparacount:=minparacount;
for i:=low(tcallercallee) to high(tcallercallee) do
location_copy(tprocvardef(result).funcretloc[i],funcretloc[i]);
tprocvardef(result).has_paraloc_info:=has_paraloc_info;
{$ifdef m68k}
tprocvardef(result).exp_funcretloc:=exp_funcretloc;
{$endif}
end;
procedure tprocvardef.ppuwrite(ppufile:tcompilerppufile);
begin
inherited ppuwrite(ppufile);
{ Write this entry }
ppufile.writeentry(ibprocvardef);
{ Save the para symtable, this is taken from the interface }
tparasymtable(parast).ppuwrite(ppufile);
end;
function tprocvardef.GetSymtable(t:tGetSymtable):TSymtable;
begin
case t of
gs_para :
GetSymtable:=parast;
else
GetSymtable:=nil;
end;
end;
function tprocvardef.size : aint;
begin
if (po_methodpointer in procoptions) and
not(po_addressonly in procoptions) then
size:=2*sizeof(pint)
else
size:=sizeof(pint);
end;
function tprocvardef.is_methodpointer:boolean;
begin
result:=(po_methodpointer in procoptions);
end;
function tprocvardef.is_addressonly:boolean;
begin
result:=not(po_methodpointer in procoptions) or
(po_addressonly in procoptions);
end;
function tprocvardef.getmangledparaname:string;
begin
result:='procvar';
end;
function tprocvardef.is_publishable : boolean;
begin
is_publishable:=(po_methodpointer in procoptions);
end;
function tprocvardef.GetTypeName : string;
var
s: string;
showhidden : boolean;
begin
{$ifdef EXTDEBUG}
showhidden:=true;
{$else EXTDEBUG}
showhidden:=false;
{$endif EXTDEBUG}
s:='<';
if po_classmethod in procoptions then
s := s+'class method type of'
else
if po_addressonly in procoptions then
s := s+'address of'
else
s := s+'procedure variable type of';
if po_local in procoptions then
s := s+' local';
if assigned(returndef) and
(returndef<>voidtype) then
s:=s+' function'+typename_paras(showhidden)+':'+returndef.GetTypeName
else
s:=s+' procedure'+typename_paras(showhidden);
if po_methodpointer in procoptions then
s := s+' of object';
GetTypeName := s+';'+ProcCallOptionStr[proccalloption]+'>';
end;
{***************************************************************************
TOBJECTDEF
***************************************************************************}
constructor tobjectdef.create(ot : tobjecttyp;const n : string;c : tobjectdef);
begin
inherited create(objectdef);
objecttype:=ot;
objectoptions:=[];
childof:=nil;
symtable:=tObjectSymtable.create(self,n,current_settings.packrecords);
{ create space for vmt !! }
vmtentries:=nil;
vmt_offset:=0;
set_parent(c);
objname:=stringdup(upper(n));
objrealname:=stringdup(n);
if objecttype in [odt_interfacecorba,odt_interfacecom,odt_dispinterface] then
prepareguid;
{ setup implemented interfaces }
if objecttype in [odt_class,odt_interfacecorba] then
ImplementedInterfaces:=TFPObjectList.Create(true)
else
ImplementedInterfaces:=nil;
writing_class_record_dbginfo:=false;
end;
constructor tobjectdef.ppuload(ppufile:tcompilerppufile);
var
i,
implintfcount : longint;
d : tderef;
ImplIntf : TImplementedInterface;
begin
inherited ppuload(objectdef,ppufile);
objecttype:=tobjecttyp(ppufile.getbyte);
objrealname:=stringdup(ppufile.getstring);
objname:=stringdup(upper(objrealname^));
symtable:=tObjectSymtable.create(self,objrealname^,0);
tObjectSymtable(symtable).datasize:=ppufile.getaint;
tObjectSymtable(symtable).fieldalignment:=ppufile.getbyte;
tObjectSymtable(symtable).recordalignment:=ppufile.getbyte;
vmt_offset:=ppufile.getlongint;
vmtentries:=nil;
ppufile.getderef(childofderef);
ppufile.getsmallset(objectoptions);
{ load guid }
iidstr:=nil;
if objecttype in [odt_interfacecom,odt_interfacecorba,odt_dispinterface] then
begin
new(iidguid);
ppufile.getguid(iidguid^);
iidstr:=stringdup(ppufile.getstring);
end;
{ load implemented interfaces }
if objecttype in [odt_class,odt_interfacecorba] then
begin
ImplementedInterfaces:=TFPObjectList.Create(true);
implintfcount:=ppufile.getlongint;
for i:=0 to implintfcount-1 do
begin
ppufile.getderef(d);
ImplIntf:=TImplementedInterface.Create_deref(d);
ImplIntf.IOffset:=ppufile.getlongint;
ImplementedInterfaces.Add(ImplIntf);
end;
end
else
ImplementedInterfaces:=nil;
tObjectSymtable(symtable).ppuload(ppufile);
{ handles the predefined class tobject }
{ the last TOBJECT which is loaded gets }
{ it ! }
if (childof=nil) and
(objecttype=odt_class) and
(objname^='TOBJECT') then
class_tobject:=self;
if (childof=nil) and
(objecttype=odt_interfacecom) and
(objname^='IUNKNOWN') then
interface_iunknown:=self;
writing_class_record_dbginfo:=false;
end;
destructor tobjectdef.destroy;
begin
if assigned(symtable) then
begin
symtable.free;
symtable:=nil;
end;
stringdispose(objname);
stringdispose(objrealname);
stringdispose(iidstr);
if assigned(ImplementedInterfaces) then
begin
ImplementedInterfaces.free;
ImplementedInterfaces:=nil;
end;
if assigned(iidguid) then
begin
dispose(iidguid);
iidguid:=nil;
end;
if assigned(vmtentries) then
begin
vmtentries.free;
vmtentries:=nil;
end;
inherited destroy;
end;
function tobjectdef.getcopy : tstoreddef;
var
i : longint;
begin
result:=tobjectdef.create(objecttype,objname^,childof);
tobjectdef(result).symtable:=symtable.getcopy;
if assigned(objname) then
tobjectdef(result).objname:=stringdup(objname^);
if assigned(objrealname) then
tobjectdef(result).objrealname:=stringdup(objrealname^);
tobjectdef(result).objectoptions:=objectoptions;
tobjectdef(result).vmt_offset:=vmt_offset;
if assigned(iidguid) then
begin
new(tobjectdef(result).iidguid);
move(iidguid^,tobjectdef(result).iidguid^,sizeof(iidguid^));
end;
if assigned(iidstr) then
tobjectdef(result).iidstr:=stringdup(iidstr^);
if assigned(ImplementedInterfaces) then
begin
for i:=0 to ImplementedInterfaces.count-1 do
tobjectdef(result).ImplementedInterfaces.Add(TImplementedInterface(ImplementedInterfaces[i]).Getcopy);
end;
if assigned(vmtentries) then
begin
tobjectdef(result).vmtentries:=TFPobjectList.Create(false);
tobjectdef(result).vmtentries.Assign(vmtentries);
end;
end;
procedure tobjectdef.ppuwrite(ppufile:tcompilerppufile);
var
i : longint;
ImplIntf : TImplementedInterface;
begin
inherited ppuwrite(ppufile);
ppufile.putbyte(byte(objecttype));
ppufile.putstring(objrealname^);
ppufile.putaint(tObjectSymtable(symtable).datasize);
ppufile.putbyte(tObjectSymtable(symtable).fieldalignment);
ppufile.putbyte(tObjectSymtable(symtable).recordalignment);
ppufile.putlongint(vmt_offset);
ppufile.putderef(childofderef);
ppufile.putsmallset(objectoptions);
if objecttype in [odt_interfacecom,odt_interfacecorba,odt_dispinterface] then
begin
ppufile.putguid(iidguid^);
ppufile.putstring(iidstr^);
end;
if objecttype in [odt_class,odt_interfacecorba] then
begin
ppufile.putlongint(ImplementedInterfaces.Count);
for i:=0 to ImplementedInterfaces.Count-1 do
begin
ImplIntf:=TImplementedInterface(ImplementedInterfaces[i]);
ppufile.putderef(ImplIntf.intfdefderef);
ppufile.putlongint(ImplIntf.Ioffset);
end;
end;
ppufile.writeentry(ibobjectdef);
tObjectSymtable(symtable).ppuwrite(ppufile);
end;
function tobjectdef.GetTypeName:string;
begin
if (self <> aktobjectdef) then
GetTypeName:=typename
else
{ in this case we will go in endless recursion, because then }
{ there is no tsym associated yet with the def. It can occur }
{ (tests/webtbf/tw4757.pp), so for now give a generic name }
{ instead of the actual type name }
GetTypeName:='<Currently Parsed Class>';
end;
procedure tobjectdef.buildderef;
var
i : longint;
begin
inherited buildderef;
childofderef.build(childof);
tstoredsymtable(symtable).buildderef;
if objecttype in [odt_class,odt_interfacecorba] then
begin
for i:=0 to ImplementedInterfaces.count-1 do
TImplementedInterface(ImplementedInterfaces[i]).buildderef;
end;
end;
procedure tobjectdef.deref;
var
i : longint;
begin
inherited deref;
childof:=tobjectdef(childofderef.resolve);
tstoredsymtable(symtable).deref;
if objecttype in [odt_class,odt_interfacecorba] then
begin
for i:=0 to ImplementedInterfaces.count-1 do
TImplementedInterface(ImplementedInterfaces[i]).deref;
end;
end;
function tobjectdef.getparentdef:tdef;
begin
{$warning TODO Remove getparentdef hack}
{ With 2 forward declared classes with the child class before the
parent class the child class is written earlier to the ppu. Leaving it
possible to have a reference to the parent class for property overriding,
but the parent class still has the childof not resolved yet (PFV) }
if childof=nil then
childof:=tobjectdef(childofderef.resolve);
result:=childof;
end;
procedure tobjectdef.prepareguid;
begin
{ set up guid }
if not assigned(iidguid) then
begin
new(iidguid);
fillchar(iidguid^,sizeof(iidguid^),0); { default null guid }
end;
{ setup iidstring }
if not assigned(iidstr) then
iidstr:=stringdup(''); { default is empty string }
end;
procedure tobjectdef.set_parent( c : tobjectdef);
begin
{ nothing to do if the parent was not forward !}
if assigned(childof) then
exit;
childof:=c;
{ some options are inherited !! }
if assigned(c) then
begin
{ only important for classes }
objectoptions:=objectoptions+(c.objectoptions*inherited_objectoptions);
if not (objecttype in [odt_interfacecom,odt_interfacecorba,odt_dispinterface]) then
begin
{ add the data of the anchestor class }
tObjectSymtable(symtable).datasize:=
tObjectSymtable(symtable).datasize+
tObjectSymtable(c.symtable).datasize;
{ inherit recordalignment }
tObjectSymtable(symtable).recordalignment:=tObjectSymtable(c.symtable).recordalignment;
if (oo_has_vmt in objectoptions) and
(oo_has_vmt in c.objectoptions) then
tObjectSymtable(symtable).datasize:=
tObjectSymtable(symtable).datasize-sizeof(pint);
{ if parent has a vmt field then
the offset is the same for the child PM }
if (oo_has_vmt in c.objectoptions) or is_class(self) then
begin
vmt_offset:=c.vmt_offset;
include(objectoptions,oo_has_vmt);
end;
end;
end;
end;
procedure tobjectdef.insertvmt;
begin
if objecttype in [odt_interfacecom,odt_interfacecorba,odt_dispinterface] then
exit;
if (oo_has_vmt in objectoptions) then
internalerror(12345)
else
begin
tObjectSymtable(symtable).datasize:=align(tObjectSymtable(symtable).datasize,
tObjectSymtable(symtable).fieldalignment);
if (tf_requires_proper_alignment in target_info.flags) then
begin
{ Align VMT pointer and whole object instance if target CPU requires alignment. }
tObjectSymtable(symtable).datasize:=align(tObjectSymtable(symtable).datasize,sizeof(pint));
tObjectSymtable(symtable).alignrecord(tObjectSymtable(symtable).datasize,sizeof(pint));
end;
vmt_offset:=tObjectSymtable(symtable).datasize;
tObjectSymtable(symtable).datasize:=
tObjectSymtable(symtable).datasize+sizeof(pint);
include(objectoptions,oo_has_vmt);
end;
end;
procedure tobjectdef.check_forwards;
begin
if not(objecttype in [odt_interfacecom,odt_interfacecorba,odt_dispinterface]) then
tstoredsymtable(symtable).check_forwards;
if (oo_is_forward in objectoptions) then
begin
{ ok, in future, the forward can be resolved }
Message1(sym_e_class_forward_not_resolved,objrealname^);
exclude(objectoptions,oo_is_forward);
end;
end;
{ true, if self inherits from d (or if they are equal) }
function tobjectdef.is_related(d : tdef) : boolean;
var
hp : tobjectdef;
begin
hp:=self;
while assigned(hp) do
begin
if hp=d then
begin
is_related:=true;
exit;
end;
hp:=hp.childof;
end;
is_related:=false;
end;
function tobjectdef.FindDestructor : tprocdef;
var
objdef : tobjectdef;
i : longint;
sym : tsym;
pd : tprocdef;
begin
result:=nil;
objdef:=self;
while assigned(objdef) do
begin
for i:=0 to objdef.symtable.SymList.Count-1 do
begin
sym:=TSym(objdef.symtable.SymList[i]);
if sym.typ=procsym then
begin
pd:=Tprocsym(sym).Find_procdef_bytype(potype_destructor);
if assigned(pd) then
begin
result:=pd;
exit;
end;
end;
end;
objdef:=objdef.childof;
end;
end;
function tobjectdef.size : aint;
begin
if objecttype in [odt_class,odt_interfacecom,odt_interfacecorba,odt_dispinterface] then
result:=sizeof(pint)
else
result:=tObjectSymtable(symtable).datasize;
end;
function tobjectdef.alignment:shortint;
begin
if objecttype in [odt_class,odt_interfacecom,odt_interfacecorba,odt_dispinterface] then
alignment:=sizeof(pint)
else
alignment:=tObjectSymtable(symtable).recordalignment;
end;
function tobjectdef.vmtmethodoffset(index:longint):longint;
begin
{ for offset of methods for classes, see rtl/inc/objpash.inc }
case objecttype of
odt_class:
{ the +2*sizeof(pint) is size and -size }
vmtmethodoffset:=(index+10)*sizeof(pint)+2*sizeof(pint);
odt_interfacecom,odt_interfacecorba:
vmtmethodoffset:=index*sizeof(pint);
else
{$ifdef WITHDMT}
vmtmethodoffset:=(index+4)*sizeof(pint);
{$else WITHDMT}
vmtmethodoffset:=(index+3)*sizeof(pint);
{$endif WITHDMT}
end;
end;
function tobjectdef.vmt_mangledname : string;
begin
if not(oo_has_vmt in objectoptions) then
Message1(parser_n_object_has_no_vmt,objrealname^);
vmt_mangledname:=make_mangledname('VMT',owner,objname^);
end;
function tobjectdef.needs_inittable : boolean;
begin
case objecttype of
odt_dispinterface,
odt_class :
needs_inittable:=false;
odt_interfacecom:
needs_inittable:=true;
odt_interfacecorba:
needs_inittable:=is_related(interface_iunknown);
odt_object:
needs_inittable:=tObjectSymtable(symtable).needs_init_final;
odt_cppclass:
needs_inittable:=false;
else
internalerror(200108267);
end;
end;
function tobjectdef.members_need_inittable : boolean;
begin
members_need_inittable:=tObjectSymtable(symtable).needs_init_final;
end;
function tobjectdef.find_implemented_interface(aintfdef:tobjectdef):TImplementedInterface;
var
ImplIntf : TImplementedInterface;
i : longint;
begin
result:=nil;
if not assigned(ImplementedInterfaces) then
exit;
for i:=0 to ImplementedInterfaces.Count-1 do
begin
ImplIntf:=TImplementedInterface(ImplementedInterfaces[i]);
if ImplIntf.intfdef=aintfdef then
begin
result:=ImplIntf;
exit;
end;
end;
end;
function tobjectdef.is_publishable : boolean;
begin
is_publishable:=objecttype in [odt_class,odt_interfacecom,odt_interfacecorba,odt_dispinterface];
end;
{****************************************************************************
TImplementedInterface
****************************************************************************}
constructor TImplementedInterface.create(aintf: tobjectdef);
begin
inherited create;
intfdef:=aintf;
IOffset:=-1;
IType:=etStandard;
NameMappings:=nil;
procdefs:=nil;
end;
constructor TImplementedInterface.create_deref(d:tderef);
begin
inherited create;
intfdef:=nil;
intfdefderef:=d;
IOffset:=-1;
IType:=etStandard;
NameMappings:=nil;
procdefs:=nil;
end;
destructor TImplementedInterface.destroy;
var
i : longint;
mappedname : pshortstring;
begin
if assigned(NameMappings) then
begin
for i:=0 to NameMappings.Count-1 do
begin
mappedname:=pshortstring(NameMappings[i]);
stringdispose(mappedname);
end;
NameMappings.free;
NameMappings:=nil;
end;
if assigned(procdefs) then
begin
procdefs.free;
procdefs:=nil;
end;
inherited destroy;
end;
procedure TImplementedInterface.buildderef;
begin
intfdefderef.build(intfdef);
end;
procedure TImplementedInterface.deref;
begin
intfdef:=tobjectdef(intfdefderef.resolve);
end;
procedure TImplementedInterface.AddMapping(const origname,newname: string);
begin
if not assigned(NameMappings) then
NameMappings:=TFPHashList.Create;
NameMappings.Add(origname,stringdup(newname));
end;
function TImplementedInterface.GetMapping(const origname: string):string;
var
mappedname : pshortstring;
begin
result:='';
if not assigned(NameMappings) then
exit;
mappedname:=PShortstring(NameMappings.Find(origname));
if assigned(mappedname) then
result:=mappedname^;
end;
procedure TImplementedInterface.AddImplProc(pd:tprocdef);
var
i : longint;
found : boolean;
begin
if not assigned(procdefs) then
procdefs:=TFPObjectList.Create(false);
{ No duplicate entries of the same procdef }
found:=false;
for i:=0 to procdefs.count-1 do
if tprocdef(procdefs[i])=pd then
begin
found:=true;
break;
end;
if not found then
procdefs.Add(pd);
end;
function TImplementedInterface.IsImplMergePossible(MergingIntf:TImplementedInterface;out weight: longint): boolean;
var
i : longint;
begin
result:=false;
{ interfaces being implemented through delegation are not mergable (FK) }
if MergingIntf.IType<>etStandard then
exit;
weight:=0;
{ empty interface is mergeable }
if ProcDefs.Count=0 then
begin
result:=true;
exit;
end;
{ The interface to merge must at least the number of
procedures of this interface }
if MergingIntf.ProcDefs.Count<ProcDefs.Count then
exit;
for i:=0 to ProcDefs.Count-1 do
begin
if MergingIntf.ProcDefs[i]<>ProcDefs[i] then
exit;
end;
weight:=ProcDefs.Count;
result:=true;
end;
function TImplementedInterface.getcopy:TImplementedInterface;
begin
Result:=TImplementedInterface.Create(nil);
Move(pointer(self)^,pointer(result)^,InstanceSize);
end;
{****************************************************************************
TFORWARDDEF
****************************************************************************}
constructor tforwarddef.create(const s:string;const pos : tfileposinfo);
begin
inherited create(forwarddef);
tosymname:=stringdup(s);
forwardpos:=pos;
end;
function tforwarddef.GetTypeName:string;
begin
GetTypeName:='unresolved forward to '+tosymname^;
end;
destructor tforwarddef.destroy;
begin
stringdispose(tosymname);
inherited destroy;
end;
{****************************************************************************
TUNDEFINEDDEF
****************************************************************************}
constructor tundefineddef.create;
begin
inherited create(undefineddef);
end;
constructor tundefineddef.ppuload(ppufile:tcompilerppufile);
begin
inherited ppuload(undefineddef,ppufile);
end;
function tundefineddef.GetTypeName:string;
begin
GetTypeName:='<undefined type>';
end;
procedure tundefineddef.ppuwrite(ppufile:tcompilerppufile);
begin
inherited ppuwrite(ppufile);
ppufile.writeentry(ibundefineddef);
end;
{****************************************************************************
TERRORDEF
****************************************************************************}
constructor terrordef.create;
begin
inherited create(errordef);
end;
procedure terrordef.ppuwrite(ppufile:tcompilerppufile);
begin
{ Can't write errordefs to ppu }
internalerror(200411063);
end;
function terrordef.GetTypeName:string;
begin
GetTypeName:='<erroneous type>';
end;
function terrordef.getmangledparaname:string;
begin
getmangledparaname:='error';
end;
{****************************************************************************
Definition Helpers
****************************************************************************}
function is_interfacecom(def: tdef): boolean;
begin
is_interfacecom:=
assigned(def) and
(def.typ=objectdef) and
(tobjectdef(def).objecttype=odt_interfacecom);
end;
function is_interfacecorba(def: tdef): boolean;
begin
is_interfacecorba:=
assigned(def) and
(def.typ=objectdef) and
(tobjectdef(def).objecttype=odt_interfacecorba);
end;
function is_interface(def: tdef): boolean;
begin
is_interface:=
assigned(def) and
(def.typ=objectdef) and
(tobjectdef(def).objecttype in [odt_interfacecom,odt_interfacecorba]);
end;
function is_dispinterface(def: tdef): boolean;
begin
result:=
assigned(def) and
(def.typ=objectdef) and
(tobjectdef(def).objecttype=odt_dispinterface);
end;
function is_class(def: tdef): boolean;
begin
is_class:=
assigned(def) and
(def.typ=objectdef) and
(tobjectdef(def).objecttype=odt_class);
end;
function is_object(def: tdef): boolean;
begin
is_object:=
assigned(def) and
(def.typ=objectdef) and
(tobjectdef(def).objecttype=odt_object);
end;
function is_cppclass(def: tdef): boolean;
begin
is_cppclass:=
assigned(def) and
(def.typ=objectdef) and
(tobjectdef(def).objecttype=odt_cppclass);
end;
function is_class_or_interface(def: tdef): boolean;
begin
is_class_or_interface:=
assigned(def) and
(def.typ=objectdef) and
(tobjectdef(def).objecttype in [odt_class,odt_interfacecom,odt_interfacecorba]);
end;
function is_class_or_interface_or_dispinterface(def: tdef): boolean;
begin
result:=
assigned(def) and
(def.typ=objectdef) and
(tobjectdef(def).objecttype in [odt_class,odt_interfacecom,odt_interfacecorba,odt_dispinterface]);
end;
{$ifdef x86}
function use_sse(def : tdef) : boolean;
begin
use_sse:=(is_single(def) and (current_settings.fputype in sse_singlescalar)) or
(is_double(def) and (current_settings.fputype in sse_doublescalar));
end;
{$endif x86}
end.
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