fpc/compiler/pdecsub.pas
peter a540ff122c * tdicationary.replace added to replace and item in a dictionary. This
is only allowed for the same name
  * varsyms are inserted in symtable before the types are parsed. This
    fixes the long standing "var longint : longint" bug
  - consume_idlist and idstringlist removed. The loops are inserted
    at the callers place and uses the symtable for duplicate id checking
2002-09-09 17:34:14 +00:00

2129 lines
77 KiB
ObjectPascal

{
$Id$
Copyright (c) 1998-2002 by Florian Klaempfl, Daniel Mantione
Does the parsing of the procedures/functions
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 pdecsub;
{$i fpcdefs.inc}
interface
uses
tokens,symconst,symtype,symdef,symsym;
const
pd_global = $1; { directive must be global }
pd_body = $2; { directive needs a body }
pd_implemen = $4; { directive can be used implementation section }
pd_interface = $8; { directive can be used interface section }
pd_object = $10; { directive can be used object declaration }
pd_procvar = $20; { directive can be used procvar declaration }
pd_notobject = $40; { directive can not be used object declaration }
pd_notobjintf= $80; { directive can not be used interface declaration }
function is_proc_directive(tok:ttoken):boolean;
procedure parameter_dec(aktprocdef:tabstractprocdef);
procedure parse_proc_directives(var pdflags:word);
procedure handle_calling_convention(sym:tprocsym;def:tabstractprocdef);
procedure calc_parasymtable_addresses(def:tprocdef);
procedure parse_proc_head(options:tproctypeoption);
procedure parse_proc_dec;
procedure parse_var_proc_directives(var sym : tsym);
procedure parse_object_proc_directives(var sym : tprocsym);
function proc_add_definition(aprocsym:tprocsym;var aprocdef : tprocdef) : boolean;
implementation
uses
{$ifdef delphi}
sysutils,
{$else delphi}
strings,
{$endif delphi}
{ common }
cutils,cclasses,
{ global }
globtype,globals,verbose,
systems,cpubase,
{ aasm }
aasmbase,aasmtai,aasmcpu,
{ symtable }
symbase,symtable,defbase,paramgr,
{ pass 1 }
node,htypechk,
nmat,nadd,ncal,nset,ncnv,ninl,ncon,nld,nflw,
{ parser }
fmodule,scanner,
pbase,pexpr,ptype,pdecl,
{ linking }
import,gendef,
{ codegen }
cpuinfo,cgbase
;
procedure resetvaluepara(p:tnamedindexitem;arg:pointer);
begin
if tsym(p).typ=varsym then
with tvarsym(p) do
if copy(name,1,3)='val' then
aktprocdef.parast.symsearch.rename(name,copy(name,4,length(name)));
end;
procedure parameter_dec(aktprocdef:tabstractprocdef);
{
handle_procvar needs the same changes
}
var
is_procvar : boolean;
sc : tsinglelist;
htype,
tt : ttype;
hvs,
vs : tvarsym;
srsym : tsym;
hs1 : string;
varspez : Tvarspez;
inserthigh : boolean;
tdefaultvalue : tconstsym;
defaultrequired : boolean;
old_object_option : tsymoptions;
dummyst : tparasymtable;
currparast : tparasymtable;
begin
consume(_LKLAMMER);
{ Delphi/Kylix supports nonsense like }
{ procedure p(); }
if try_to_consume(_RKLAMMER) and
not(m_tp7 in aktmodeswitches) then
exit;
{ parsing a proc or procvar ? }
is_procvar:=(aktprocdef.deftype=procvardef);
{ create dummy symtable for procvars }
if is_procvar then
begin
{ we can't insert the dummyst in the symtablestack,
because definitions will be inserted in the symtablestack. And
this symtable is disposed at the end of the parsing, so the
definitions are lost }
dummyst:=tparasymtable.create;
currparast:=dummyst;
end
else
begin
{ parast is available, we can insert in symtablestack }
tprocdef(aktprocdef).parast.next:=symtablestack;
symtablestack:=tprocdef(aktprocdef).parast;
currparast:=tparasymtable(tprocdef(aktprocdef).parast);
end;
{ reset }
sc:=tsinglelist.create;
defaultrequired:=false;
{ the variables are always public }
old_object_option:=current_object_option;
current_object_option:=[sp_public];
inc(testcurobject);
repeat
if try_to_consume(_VAR) then
varspez:=vs_var
else
if try_to_consume(_CONST) then
varspez:=vs_const
else
if (idtoken=_OUT) and (m_out in aktmodeswitches) then
begin
consume(_OUT);
varspez:=vs_out
end
else
varspez:=vs_value;
inserthigh:=false;
tdefaultvalue:=nil;
tt.reset;
{ self is only allowed in procvars and class methods }
if (idtoken=_SELF) and
(is_procvar or
(assigned(procinfo._class) and is_class(procinfo._class))) then
begin
if varspez <> vs_value then
CGMessage(parser_e_self_call_by_value);
if not is_procvar then
begin
htype.setdef(procinfo._class);
vs:=tvarsym.create('@',htype);
vs.varspez:=vs_var;
{ insert the sym in the parasymtable }
tprocdef(aktprocdef).parast.insert(vs);
inc(procinfo.selfpointer_offset,vs.address);
end
else
vs:=nil;
{ must also be included for procvars to allow the proc2procvar }
{ type conversions (po_containsself is in po_comp) (JM) }
include(aktprocdef.procoptions,po_containsself);
consume(idtoken);
consume(_COLON);
single_type(tt,hs1,false);
{ this must be call-by-value, but we generate already an }
{ an error above if that's not the case (JM) }
aktprocdef.concatpara(tt,vs,varspez,nil);
{ check the types for procedures only }
if not is_procvar then
CheckTypes(tt.def,procinfo._class);
end
else
begin
{ read identifiers and insert with error type }
sc.reset;
repeat
vs:=tvarsym.create(orgpattern,generrortype);
currparast.insert(vs);
sc.insert(vs);
consume(_ID);
until not try_to_consume(_COMMA);
{ read type declaration, force reading for value and const paras }
if (token=_COLON) or (varspez=vs_value) then
begin
consume(_COLON);
{ check for an open array }
if token=_ARRAY then
begin
consume(_ARRAY);
consume(_OF);
{ define range and type of range }
tt.setdef(tarraydef.create(0,-1,s32bittype));
{ array of const ? }
if (token=_CONST) and (m_objpas in aktmodeswitches) then
begin
consume(_CONST);
srsym:=searchsymonlyin(systemunit,'TVARREC');
if not assigned(srsym) then
InternalError(1234124);
tarraydef(tt.def).elementtype:=ttypesym(srsym).restype;
tarraydef(tt.def).IsArrayOfConst:=true;
end
else
begin
{ define field type }
single_type(tarraydef(tt.def).elementtype,hs1,false);
end;
inserthigh:=true;
end
else
begin
{ open string ? }
if (varspez=vs_var) and
(
(
((token=_STRING) or (idtoken=_SHORTSTRING)) and
(cs_openstring in aktmoduleswitches) and
not(cs_ansistrings in aktlocalswitches)
) or
(idtoken=_OPENSTRING)) then
begin
consume(token);
tt:=openshortstringtype;
hs1:='openstring';
inserthigh:=true;
end
else
begin
{ everything else }
single_type(tt,hs1,false);
end;
{ default parameter }
if (m_default_para in aktmodeswitches) then
begin
if try_to_consume(_EQUAL) then
begin
vs:=tvarsym(sc.first);
if assigned(vs) and
assigned(vs.listnext) then
Comment(V_Error,'default value only allowed for one parameter');
{ prefix 'def' to the parameter name }
tdefaultvalue:=ReadConstant('$def'+vs.name,vs.fileinfo);
if assigned(tdefaultvalue) then
tprocdef(aktprocdef).parast.insert(tdefaultvalue);
defaultrequired:=true;
end
else
begin
if defaultrequired then
Comment(V_Error,'default parameter required');
end;
end;
end;
end
else
begin
{$ifndef UseNiceNames}
hs1:='$$$';
{$else UseNiceNames}
hs1:='var';
{$endif UseNiceNames}
tt:=cformaltype;
end;
{ For proc vars we only need the definitions }
if not is_procvar then
begin
vs:=tvarsym(sc.first);
while assigned(vs) do
begin
{ update varsym }
vs.vartype:=tt;
vs.varspez:=varspez;
if (varspez in [vs_var,vs_const,vs_out]) and
paramanager.push_addr_param(tt.def,false) then
include(vs.varoptions,vo_regable);
{ do we need a local copy? Then rename the varsym, do this after the
insert so the dup id checking is done correctly }
if (varspez=vs_value) and
paramanager.push_addr_param(tt.def,aktprocdef.proccalloption in [pocall_cdecl,pocall_cppdecl]) and
not(is_open_array(tt.def) or is_array_of_const(tt.def)) then
currparast.rename(vs.name,'val'+vs.name);
{ also need to push a high value? }
if inserthigh then
begin
hvs:=tvarsym.create('$high'+vs.name,s32bittype);
hvs.varspez:=vs_const;
currparast.insert(hvs);
end;
aktprocdef.concatpara(tt,vs,varspez,tdefaultvalue);
vs:=tvarsym(vs.listnext);
end;
end
else
begin
vs:=tvarsym(sc.first);
while assigned(vs) do
begin
{ don't insert a parasym, the varsyms will be
disposed }
aktprocdef.concatpara(tt,nil,varspez,tdefaultvalue);
vs:=tvarsym(vs.listnext);
end;
end;
end;
{ set the new mangled name }
until not try_to_consume(_SEMICOLON);
{ remove parasymtable from stack }
if is_procvar then
dummyst.free
else
symtablestack:=symtablestack.next;
sc.free;
{ reset object options }
dec(testcurobject);
current_object_option:=old_object_option;
consume(_RKLAMMER);
end;
procedure parse_proc_head(options:tproctypeoption);
var
orgsp,sp:stringid;
paramoffset:longint;
sym:tsym;
st : tsymtable;
srsymtable : tsymtable;
pdl : pprocdeflist;
storepos,procstartfilepos : tfileposinfo;
i: longint;
begin
{ Save the position where this procedure really starts }
procstartfilepos:=akttokenpos;
aktprocdef:=nil;
if (options=potype_operator) then
begin
sp:=overloaded_names[optoken];
orgsp:=sp;
end
else
begin
sp:=pattern;
orgsp:=orgpattern;
consume(_ID);
end;
{ examine interface map: function/procedure iname.functionname=locfuncname }
if parse_only and
assigned(procinfo._class) and
assigned(procinfo._class.implementedinterfaces) and
(procinfo._class.implementedinterfaces.count>0) and
try_to_consume(_POINT) then
begin
storepos:=akttokenpos;
akttokenpos:=procstartfilepos;
{ get interface syms}
searchsym(sp,sym,srsymtable);
if not assigned(sym) then
begin
identifier_not_found(orgsp);
sym:=generrorsym;
end;
akttokenpos:=storepos;
{ load proc name }
if sym.typ=typesym then
i:=procinfo._class.implementedinterfaces.searchintf(ttypesym(sym).restype.def);
{ qualifier is interface name? }
if (sym.typ<>typesym) or (ttypesym(sym).restype.def.deftype<>objectdef) or
(i=-1) then
begin
Message(parser_e_interface_id_expected);
aktprocsym:=nil;
end
else
begin
aktprocsym:=tprocsym(procinfo._class.implementedinterfaces.interfaces(i).symtable.search(sp));
{ the method can be declared after the mapping FK
if not(assigned(aktprocsym)) then
Message(parser_e_methode_id_expected);
}
end;
consume(_ID);
consume(_EQUAL);
if (token=_ID) { and assigned(aktprocsym) } then
procinfo._class.implementedinterfaces.addmappings(i,sp,pattern);
consume(_ID);
exit;
end;
{ method ? }
if not(parse_only) and
(lexlevel=normal_function_level) and
try_to_consume(_POINT) then
begin
{ search for object name }
storepos:=akttokenpos;
akttokenpos:=procstartfilepos;
searchsym(sp,sym,srsymtable);
if not assigned(sym) then
begin
identifier_not_found(orgsp);
sym:=generrorsym;
end;
akttokenpos:=storepos;
{ consume proc name }
sp:=pattern;
orgsp:=orgpattern;
procstartfilepos:=akttokenpos;
consume(_ID);
{ qualifier is class name ? }
if (sym.typ<>typesym) or
(ttypesym(sym).restype.def.deftype<>objectdef) then
begin
Message(parser_e_class_id_expected);
aktprocsym:=nil;
aktprocdef:=nil;
end
else
begin
{ used to allow private syms to be seen }
aktobjectdef:=tobjectdef(ttypesym(sym).restype.def);
procinfo._class:=tobjectdef(ttypesym(sym).restype.def);
aktprocsym:=tprocsym(procinfo._class.symtable.search(sp));
{The procedure has been found. So it is
a global one. Set the flags to mark this.}
procinfo.flags:=procinfo.flags or pi_is_global;
aktobjectdef:=nil;
{ we solve this below }
if not(assigned(aktprocsym)) then
Message(parser_e_methode_id_expected);
end;
end
else
begin
{ check for constructor/destructor which is not allowed here }
if (not parse_only) and
(options in [potype_constructor,potype_destructor]) then
Message(parser_e_constructors_always_objects);
akttokenpos:=procstartfilepos;
aktprocsym:=tprocsym(symtablestack.search(sp));
if not(parse_only) then
begin
{The procedure we prepare for is in the implementation
part of the unit we compile. It is also possible that we
are compiling a program, which is also some kind of
implementaion part.
We need to find out if the procedure is global. If it is
global, it is in the global symtable.}
if not assigned(aktprocsym) and
(symtablestack.symtabletype=staticsymtable) and
assigned(symtablestack.next) and
(symtablestack.next.unitid=0) then
begin
{Search the procedure in the global symtable.}
aktprocsym:=tprocsym(symtablestack.next.search(sp));
if assigned(aktprocsym) then
begin
{Check if it is a procedure.}
if aktprocsym.typ<>procsym then
DuplicateSym(aktprocsym);
{The procedure has been found. So it is
a global one. Set the flags to mark this.}
procinfo.flags:=procinfo.flags or pi_is_global;
end;
end;
end;
end;
if assigned(aktprocsym) then
begin
{ Check if overloaded is a procsym }
if aktprocsym.typ<>procsym then
begin
{ when the other symbol is a unit symbol then hide the unit
symbol. Only in tp mode because it's bad programming }
if (m_duplicate_names in aktmodeswitches) and
(aktprocsym.typ=unitsym) then
begin
aktprocsym.owner.rename(aktprocsym.name,'hidden'+aktprocsym.name);
end
else
begin
{ we use a different error message for tp7 so it looks more compatible }
if (m_fpc in aktmodeswitches) then
Message1(parser_e_overloaded_no_procedure,aktprocsym.realname)
else
DuplicateSym(aktprocsym);
{ rename the name to an unique name to avoid an
error when inserting the symbol in the symtable }
orgsp:=orgsp+'$'+tostr(aktfilepos.line);
end;
{ generate a new aktprocsym }
aktprocsym:=nil;
end;
end;
{ test again if assigned, it can be reset to recover }
if not assigned(aktprocsym) then
begin
{ create a new procsym and set the real filepos }
akttokenpos:=procstartfilepos;
{ for operator we have only one procsym for each overloaded
operation }
if (options=potype_operator) then
begin
{ is the current overload sym already in the current unit }
if assigned(overloaded_operators[optoken]) and
(overloaded_operators[optoken].owner=symtablestack) then
aktprocsym:=overloaded_operators[optoken]
else
begin
{ create the procsym with saving the original case }
aktprocsym:=tprocsym.create('$'+sp);
if assigned(overloaded_operators[optoken]) then
overloaded_operators[optoken].concat_procdefs_to(aktprocsym);
end;
end
else
aktprocsym:=tprocsym.create(orgsp);
symtablestack.insert(aktprocsym);
end;
st:=symtablestack;
aktprocdef:=tprocdef.create;
aktprocdef.symtablelevel:=symtablestack.symtablelevel;
if assigned(procinfo._class) then
aktprocdef._class := procinfo._class;
{ set the options from the caller (podestructor or poconstructor) }
aktprocdef.proctypeoption:=options;
{ add procsym to the procdef }
aktprocdef.procsym:=aktprocsym;
{ save file position }
aktprocdef.fileinfo:=procstartfilepos;
{ this must also be inserted in the right symtable !! PM }
{ otherwise we get subbtle problems with
definitions of args defs in staticsymtable for
implementation of a global method }
if token=_LKLAMMER then
parameter_dec(aktprocdef);
{ calculate the offset of the parameters }
paramoffset:=target_info.first_parm_offset;
{ calculate frame pointer offset }
if lexlevel>normal_function_level then
begin
procinfo.framepointer_offset:=paramoffset;
inc(paramoffset,pointer_size);
{ this is needed to get correct framepointer push for local
forward functions !! }
aktprocdef.parast.symtablelevel:=lexlevel;
end;
if assigned (procinfo._Class) and
is_object(procinfo._Class) and
(aktprocdef.proctypeoption in [potype_constructor,potype_destructor]) then
inc(paramoffset,pointer_size);
{ self pointer offset, must be done after parsing the parameters }
{ self isn't pushed in nested procedure of methods }
if assigned(procinfo._class) and (lexlevel=normal_function_level) then
begin
procinfo.selfpointer_offset:=paramoffset;
if assigned(aktprocdef) and
not(po_containsself in aktprocdef.procoptions) then
inc(paramoffset,pointer_size);
end;
{ con/-destructor flag ? }
if assigned (procinfo._Class) and
is_class(procinfo._class) and
(aktprocdef.proctypeoption in [potype_destructor,potype_constructor]) then
inc(paramoffset,pointer_size);
procinfo.para_offset:=paramoffset;
{ so we only restore the symtable now }
symtablestack:=st;
if (options=potype_operator) then
overloaded_operators[optoken]:=aktprocsym;
end;
procedure parse_proc_dec;
var
hs : string;
isclassmethod : boolean;
begin
inc(lexlevel);
{ read class method }
if token=_CLASS then
begin
consume(_CLASS);
isclassmethod:=true;
end
else
isclassmethod:=false;
case token of
_FUNCTION : begin
consume(_FUNCTION);
parse_proc_head(potype_none);
if token<>_COLON then
begin
if assigned(aktprocsym) and
not(is_interface(aktprocdef._class)) and
not(aktprocdef.forwarddef) or
(m_repeat_forward in aktmodeswitches) then
begin
consume(_COLON);
consume_all_until(_SEMICOLON);
end;
end
else
begin
consume(_COLON);
inc(testcurobject);
single_type(aktprocdef.rettype,hs,false);
aktprocdef.test_if_fpu_result;
dec(testcurobject);
end;
end;
_PROCEDURE : begin
consume(_PROCEDURE);
parse_proc_head(potype_none);
if assigned(aktprocsym) then
aktprocdef.rettype:=voidtype;
end;
_CONSTRUCTOR : begin
consume(_CONSTRUCTOR);
parse_proc_head(potype_constructor);
if assigned(procinfo._class) and
is_class(procinfo._class) then
begin
{ CLASS constructors return the created instance }
aktprocdef.rettype.setdef(procinfo._class);
end
else
begin
{ OBJECT constructors return a boolean }
aktprocdef.rettype:=booltype;
end;
end;
_DESTRUCTOR : begin
consume(_DESTRUCTOR);
parse_proc_head(potype_destructor);
aktprocdef.rettype:=voidtype;
end;
_OPERATOR : begin
if lexlevel>normal_function_level then
Message(parser_e_no_local_operator);
consume(_OPERATOR);
if (token in [first_overloaded..last_overloaded]) then
begin
procinfo.flags:=procinfo.flags or pi_operator;
optoken:=token;
end
else
begin
Message(parser_e_overload_operator_failed);
{ Use the dummy NOTOKEN that is also declared
for the overloaded_operator[] }
optoken:=NOTOKEN;
end;
consume(Token);
parse_proc_head(potype_operator);
if token<>_ID then
begin
otsym:=nil;
if not(m_result in aktmodeswitches) then
consume(_ID);
end
else
begin
otsym:=tvarsym.create(pattern,voidtype);
consume(_ID);
end;
if not try_to_consume(_COLON) then
begin
consume(_COLON);
aktprocdef.rettype:=generrortype;
consume_all_until(_SEMICOLON);
end
else
begin
single_type(aktprocdef.rettype,hs,false);
aktprocdef.test_if_fpu_result;
if (optoken in [_EQUAL,_GT,_LT,_GTE,_LTE]) and
((aktprocdef.rettype.def.deftype<>orddef) or
(torddef(aktprocdef.rettype.def).typ<>bool8bit)) then
Message(parser_e_comparative_operator_return_boolean);
if assigned(otsym) then
otsym.vartype.def:=aktprocdef.rettype.def;
if (optoken=_ASSIGNMENT) and
is_equal(aktprocdef.rettype.def,
tvarsym(aktprocdef.parast.symindex.first).vartype.def) then
message(parser_e_no_such_assignment)
else if not isoperatoracceptable(aktprocdef,optoken) then
Message(parser_e_overload_impossible);
end;
end;
end;
if isclassmethod and
assigned(aktprocsym) then
include(aktprocdef.procoptions,po_classmethod);
{ support procedure proc;stdcall export; in Delphi mode only }
if not((m_delphi in aktmodeswitches) and
is_proc_directive(token)) then
consume(_SEMICOLON);
dec(lexlevel);
end;
{****************************************************************************
Procedure directive handlers
****************************************************************************}
procedure pd_far;
begin
Message(parser_w_proc_far_ignored);
end;
procedure pd_near;
begin
Message(parser_w_proc_near_ignored);
end;
procedure pd_export;
begin
if assigned(procinfo._class) then
Message(parser_e_methods_dont_be_export);
if lexlevel<>normal_function_level then
Message(parser_e_dont_nest_export);
{ only os/2 needs this }
if target_info.system=system_i386_os2 then
begin
aktprocdef.aliasnames.insert(aktprocsym.realname);
procinfo.exported:=true;
if cs_link_deffile in aktglobalswitches then
deffile.AddExport(aktprocdef.mangledname);
end;
end;
procedure pd_forward;
begin
aktprocdef.forwarddef:=true;
end;
procedure pd_alias;
begin
consume(_COLON);
aktprocdef.aliasnames.insert(get_stringconst);
end;
procedure pd_asmname;
begin
aktprocdef.setmangledname(target_info.Cprefix+pattern);
aktprocdef.has_mangledname:=true;
if token=_CCHAR then
consume(_CCHAR)
else
consume(_CSTRING);
{ we don't need anything else }
aktprocdef.forwarddef:=false;
end;
procedure pd_intern;
begin
consume(_COLON);
aktprocdef.extnumber:=get_intconst;
end;
procedure pd_interrupt;
begin
if lexlevel<>normal_function_level then
Message(parser_e_dont_nest_interrupt);
end;
procedure pd_abstract;
begin
if (po_virtualmethod in aktprocdef.procoptions) then
include(aktprocdef.procoptions,po_abstractmethod)
else
Message(parser_e_only_virtual_methods_abstract);
{ the method is defined }
aktprocdef.forwarddef:=false;
end;
procedure pd_virtual;
{$ifdef WITHDMT}
var
pt : tnode;
{$endif WITHDMT}
begin
if (aktprocdef.proctypeoption=potype_constructor) and
is_object(aktprocdef._class) then
Message(parser_e_constructor_cannot_be_not_virtual);
{$ifdef WITHDMT}
if is_object(aktprocdef._class) and
(token<>_SEMICOLON) then
begin
{ any type of parameter is allowed here! }
pt:=comp_expr(true);
if is_constintnode(pt) then
begin
include(aktprocdef.procoptions,po_msgint);
aktprocdef.messageinf.i:=pt^.value;
end
else
Message(parser_e_ill_msg_expr);
disposetree(pt);
end;
{$endif WITHDMT}
end;
procedure pd_static;
begin
if (cs_static_keyword in aktmoduleswitches) then
begin
include(aktprocsym.symoptions,sp_static);
include(aktprocdef.procoptions,po_staticmethod);
end;
end;
procedure pd_override;
begin
if not(is_class_or_interface(aktprocdef._class)) then
Message(parser_e_no_object_override);
end;
procedure pd_overload;
begin
include(aktprocsym.symoptions,sp_has_overloaded);
end;
procedure pd_message;
var
pt : tnode;
begin
{ check parameter type }
if not(po_containsself in aktprocdef.procoptions) and
((aktprocdef.minparacount<>1) or
(aktprocdef.maxparacount<>1) or
(TParaItem(aktprocdef.Para.first).paratyp<>vs_var)) then
Message(parser_e_ill_msg_param);
pt:=comp_expr(true);
if pt.nodetype=stringconstn then
begin
include(aktprocdef.procoptions,po_msgstr);
aktprocdef.messageinf.str:=strnew(tstringconstnode(pt).value_str);
end
else
if is_constintnode(pt) then
begin
include(aktprocdef.procoptions,po_msgint);
aktprocdef.messageinf.i:=tordconstnode(pt).value;
end
else
Message(parser_e_ill_msg_expr);
pt.free;
end;
procedure pd_reintroduce;
begin
Message1(parser_w_proc_directive_ignored,'REINTRODUCE');
end;
procedure pd_syscall;
begin
aktprocdef.forwarddef:=false;
aktprocdef.extnumber:=get_intconst;
end;
procedure pd_external;
{
If import_dll=nil the procedure is assumed to be in another
object file. In that object file it should have the name to
which import_name is pointing to. Otherwise, the procedure is
assumed to be in the DLL to which import_dll is pointing to. In
that case either import_nr<>0 or import_name<>nil is true, so
the procedure is either imported by number or by name. (DM)
}
var
import_dll,
import_name : string;
import_nr : word;
begin
aktprocdef.forwarddef:=false;
{ forbid local external procedures }
if lexlevel>normal_function_level then
Message(parser_e_no_local_external);
{ If the procedure should be imported from a DLL, a constant string follows.
This isn't really correct, an contant string expression follows
so we check if an semicolon follows, else a string constant have to
follow (FK) }
import_nr:=0;
import_name:='';
if not(token=_SEMICOLON) and not(idtoken=_NAME) then
begin
import_dll:=get_stringconst;
if (idtoken=_NAME) then
begin
consume(_NAME);
import_name:=get_stringconst;
end;
if (idtoken=_INDEX) then
begin
{After the word index follows the index number in the DLL.}
consume(_INDEX);
import_nr:=get_intconst;
end;
{ default is to used the realname of the procedure }
if (import_nr=0) and (import_name='') then
import_name:=aktprocsym.realname;
{ create importlib if not already done }
if not(current_module.uses_imports) then
begin
current_module.uses_imports:=true;
importlib.preparelib(current_module.modulename^);
end;
{$ifdef notused}
if not(m_repeat_forward in aktmodeswitches) and
{ if the procedure is declared with the overload option }
{ it requires a full declaration in the implementation part }
not(sp_has_overloaded in aktprocsym.symoptions) then
begin
{ we can only have one overloaded here ! }
if assigned(aktprocdef.defs.next) then
importlib.importprocedure(aktprocdef.defs.next.mangledname,
import_dll,import_nr,import_name)
else
importlib.importprocedure(aktprocdef.mangledname,import_dll,import_nr,import_name);
end
else
{$endif notused}
importlib.importprocedure(aktprocdef.mangledname,import_dll,import_nr,import_name);
end
else
begin
if (idtoken=_NAME) then
begin
consume(_NAME);
import_name:=get_stringconst;
aktprocdef.setmangledname(import_name);
aktprocdef.has_mangledname:=true;
end;
end;
end;
type
pd_handler=procedure;
proc_dir_rec=record
idtok : ttoken;
pd_flags : longint;
handler : pd_handler;
pocall : tproccalloption;
pooption : tprocoptions;
mutexclpocall : tproccalloptions;
mutexclpotype : tproctypeoptions;
mutexclpo : tprocoptions;
end;
const
{Should contain the number of procedure directives we support.}
num_proc_directives=36;
proc_direcdata:array[1..num_proc_directives] of proc_dir_rec=
(
(
idtok:_ABSTRACT;
pd_flags : pd_interface+pd_object+pd_notobjintf;
handler : {$ifdef FPCPROCVAR}@{$endif}pd_abstract;
pocall : pocall_none;
pooption : [po_abstractmethod];
mutexclpocall : [pocall_internproc,pocall_inline];
mutexclpotype : [potype_constructor,potype_destructor];
mutexclpo : [po_exports,po_interrupt,po_external]
),(
idtok:_ALIAS;
pd_flags : pd_implemen+pd_body+pd_notobjintf;
handler : {$ifdef FPCPROCVAR}@{$endif}pd_alias;
pocall : pocall_none;
pooption : [];
mutexclpocall : [pocall_inline];
mutexclpotype : [];
mutexclpo : [po_external]
),(
idtok:_ASMNAME;
pd_flags : pd_interface+pd_implemen+pd_notobjintf;
handler : {$ifdef FPCPROCVAR}@{$endif}pd_asmname;
pocall : pocall_cdecl;
pooption : [po_external];
mutexclpocall : [pocall_internproc,pocall_inline];
mutexclpotype : [];
mutexclpo : [po_external]
),(
idtok:_ASSEMBLER;
pd_flags : pd_implemen+pd_body+pd_notobjintf;
handler : nil;
pocall : pocall_none;
pooption : [po_assembler];
mutexclpocall : [];
mutexclpotype : [];
mutexclpo : [po_external]
),(
idtok:_CDECL;
pd_flags : pd_interface+pd_implemen+pd_body+pd_procvar;
handler : nil;
pocall : pocall_cdecl;
pooption : [];
mutexclpocall : [];
mutexclpotype : [];
mutexclpo : [po_assembler,po_external]
),(
idtok:_DYNAMIC;
pd_flags : pd_interface+pd_object+pd_notobjintf;
handler : {$ifdef FPCPROCVAR}@{$endif}pd_virtual;
pocall : pocall_none;
pooption : [po_virtualmethod];
mutexclpocall : [pocall_internproc,pocall_inline];
mutexclpotype : [];
mutexclpo : [po_exports,po_interrupt,po_external]
),(
idtok:_EXPORT;
pd_flags : pd_body+pd_global+pd_interface+pd_implemen{??}+pd_notobjintf;
handler : {$ifdef FPCPROCVAR}@{$endif}pd_export;
pocall : pocall_none;
pooption : [po_exports];
mutexclpocall : [pocall_internproc,pocall_inline];
mutexclpotype : [];
mutexclpo : [po_external,po_interrupt]
),(
idtok:_EXTERNAL;
pd_flags : pd_implemen+pd_interface+pd_notobjintf;
handler : {$ifdef FPCPROCVAR}@{$endif}pd_external;
pocall : pocall_none;
pooption : [po_external];
mutexclpocall : [pocall_internproc,pocall_inline,pocall_palmossyscall];
mutexclpotype : [];
mutexclpo : [po_exports,po_interrupt,po_assembler]
),(
idtok:_FAR;
pd_flags : pd_implemen+pd_body+pd_interface+pd_procvar+pd_notobjintf;
handler : {$ifdef FPCPROCVAR}@{$endif}pd_far;
pocall : pocall_none;
pooption : [];
mutexclpocall : [pocall_internproc,pocall_inline];
mutexclpotype : [];
mutexclpo : []
),(
idtok:_FAR16;
pd_flags : pd_interface+pd_implemen+pd_body+pd_procvar;
handler : nil;
pocall : pocall_far16;
pooption : [];
mutexclpocall : [];
mutexclpotype : [];
mutexclpo : [po_external,po_leftright]
),(
idtok:_FORWARD;
pd_flags : pd_implemen+pd_notobjintf;
handler : {$ifdef FPCPROCVAR}@{$endif}pd_forward;
pocall : pocall_none;
pooption : [];
mutexclpocall : [pocall_internproc,pocall_inline];
mutexclpotype : [];
mutexclpo : [po_external]
),(
idtok:_FPCCALL;
pd_flags : pd_interface+pd_implemen+pd_body+pd_procvar;
handler : nil;
pocall : pocall_fpccall;
pooption : [];
mutexclpocall : [];
mutexclpotype : [];
mutexclpo : [po_leftright]
),(
idtok:_INLINE;
pd_flags : pd_interface+pd_implemen+pd_body+pd_notobjintf;
handler : nil;
pocall : pocall_inline;
pooption : [];
mutexclpocall : [];
mutexclpotype : [potype_constructor,potype_destructor];
mutexclpo : [po_exports,po_external,po_interrupt]
),(
idtok:_INTERNCONST;
pd_flags : pd_implemen+pd_body+pd_notobjintf;
handler : {$ifdef FPCPROCVAR}@{$endif}pd_intern;
pocall : pocall_none;
pooption : [po_internconst];
mutexclpocall : [];
mutexclpotype : [potype_operator];
mutexclpo : []
),(
idtok:_INTERNPROC;
pd_flags : pd_implemen+pd_notobjintf;
handler : {$ifdef FPCPROCVAR}@{$endif}pd_intern;
pocall : pocall_internproc;
pooption : [];
mutexclpocall : [];
mutexclpotype : [potype_constructor,potype_destructor,potype_operator];
mutexclpo : [po_exports,po_external,po_interrupt,po_assembler,po_iocheck,po_leftright]
),(
idtok:_INTERRUPT;
pd_flags : pd_implemen+pd_body+pd_notobjintf;
handler : {$ifdef FPCPROCVAR}@{$endif}pd_interrupt;
pocall : pocall_none;
pooption : [po_interrupt];
mutexclpocall : [pocall_internproc,pocall_cdecl,pocall_cppdecl,
pocall_inline,pocall_pascal,pocall_system,pocall_far16,pocall_fpccall];
mutexclpotype : [potype_constructor,potype_destructor,potype_operator];
mutexclpo : [po_external,po_leftright,po_clearstack]
),(
idtok:_IOCHECK;
pd_flags : pd_implemen+pd_body+pd_notobjintf;
handler : nil;
pocall : pocall_none;
pooption : [po_iocheck];
mutexclpocall : [pocall_internproc];
mutexclpotype : [];
mutexclpo : [po_external]
),(
idtok:_MESSAGE;
pd_flags : pd_interface+pd_object+pd_notobjintf;
handler : {$ifdef FPCPROCVAR}@{$endif}pd_message;
pocall : pocall_none;
pooption : []; { can be po_msgstr or po_msgint }
mutexclpocall : [pocall_inline,pocall_internproc];
mutexclpotype : [potype_constructor,potype_destructor,potype_operator];
mutexclpo : [po_interrupt,po_external]
),(
idtok:_NEAR;
pd_flags : pd_implemen+pd_body+pd_procvar+pd_notobjintf;
handler : {$ifdef FPCPROCVAR}@{$endif}pd_near;
pocall : pocall_none;
pooption : [];
mutexclpocall : [pocall_internproc];
mutexclpotype : [];
mutexclpo : []
),(
idtok:_OVERLOAD;
pd_flags : pd_implemen+pd_interface+pd_body;
handler : {$ifdef FPCPROCVAR}@{$endif}pd_overload;
pocall : pocall_none;
pooption : [po_overload];
mutexclpocall : [pocall_internproc];
mutexclpotype : [];
mutexclpo : []
),(
idtok:_OVERRIDE;
pd_flags : pd_interface+pd_object+pd_notobjintf;
handler : {$ifdef FPCPROCVAR}@{$endif}pd_override;
pocall : pocall_none;
pooption : [po_overridingmethod,po_virtualmethod];
mutexclpocall : [pocall_inline,pocall_internproc];
mutexclpotype : [];
mutexclpo : [po_exports,po_external,po_interrupt]
),(
idtok:_PASCAL;
pd_flags : pd_interface+pd_implemen+pd_body+pd_procvar;
handler : nil;
pocall : pocall_pascal;
pooption : [];
mutexclpocall : [];
mutexclpotype : [];
mutexclpo : [po_external]
),(
idtok:_POPSTACK;
pd_flags : pd_interface+pd_implemen+pd_body+pd_procvar;
handler : nil;
pocall : pocall_none;
pooption : [po_clearstack];
mutexclpocall : [pocall_inline,pocall_internproc,pocall_stdcall];
mutexclpotype : [];
mutexclpo : [po_assembler,po_external]
),(
idtok:_PUBLIC;
pd_flags : pd_implemen+pd_body+pd_global+pd_notobject+pd_notobjintf;
handler : nil;
pocall : pocall_none;
pooption : [];
mutexclpocall : [pocall_internproc,pocall_inline];
mutexclpotype : [];
mutexclpo : [po_external]
),(
idtok:_REGISTER;
pd_flags : pd_interface+pd_implemen+pd_body+pd_procvar;
handler : nil;
pocall : pocall_register;
pooption : [];
mutexclpocall : [];
mutexclpotype : [];
mutexclpo : [po_external]
),(
idtok:_REINTRODUCE;
pd_flags : pd_interface+pd_object;
handler : {$ifdef FPCPROCVAR}@{$endif}pd_reintroduce;
pocall : pocall_none;
pooption : [];
mutexclpocall : [];
mutexclpotype : [];
mutexclpo : []
),(
idtok:_SAFECALL;
pd_flags : pd_interface+pd_implemen+pd_body+pd_procvar;
handler : nil;
pocall : pocall_safecall;
pooption : [];
mutexclpocall : [];
mutexclpotype : [];
mutexclpo : [po_external]
),(
idtok:_SAVEREGISTERS;
pd_flags : pd_interface+pd_implemen+pd_body+pd_procvar+pd_notobjintf;
handler : nil;
pocall : pocall_none;
pooption : [po_saveregisters];
mutexclpocall : [pocall_internproc];
mutexclpotype : [];
mutexclpo : [po_external]
),(
idtok:_STATIC;
pd_flags : pd_interface+pd_object+pd_notobjintf;
handler : {$ifdef FPCPROCVAR}@{$endif}pd_static;
pocall : pocall_none;
pooption : [po_staticmethod];
mutexclpocall : [pocall_inline,pocall_internproc];
mutexclpotype : [potype_constructor,potype_destructor];
mutexclpo : [po_external,po_interrupt,po_exports]
),(
idtok:_STDCALL;
pd_flags : pd_interface+pd_implemen+pd_body+pd_procvar;
handler : nil;
pocall : pocall_stdcall;
pooption : [];
mutexclpocall : [];
mutexclpotype : [];
mutexclpo : [po_external]
),(
idtok:_SYSCALL;
pd_flags : pd_interface+pd_implemen+pd_notobjintf;
handler : {$ifdef FPCPROCVAR}@{$endif}pd_syscall;
pocall : pocall_palmossyscall;
pooption : [];
mutexclpocall : [];
mutexclpotype : [];
mutexclpo : [po_external,po_assembler,po_interrupt,po_exports]
),(
idtok:_SYSTEM;
pd_flags : pd_implemen+pd_notobjintf;
handler : nil;
pocall : pocall_system;
pooption : [];
mutexclpocall : [];
mutexclpotype : [];
mutexclpo : [po_external,po_assembler,po_interrupt]
),(
idtok:_VIRTUAL;
pd_flags : pd_interface+pd_object+pd_notobjintf;
handler : {$ifdef FPCPROCVAR}@{$endif}pd_virtual;
pocall : pocall_none;
pooption : [po_virtualmethod];
mutexclpocall : [pocall_inline,pocall_internproc];
mutexclpotype : [];
mutexclpo : [po_external,po_interrupt,po_exports]
),(
idtok:_CPPDECL;
pd_flags : pd_interface+pd_implemen+pd_body+pd_procvar;
handler : nil;
pocall : pocall_cppdecl;
pooption : [po_savestdregs];
mutexclpocall : [];
mutexclpotype : [];
mutexclpo : [po_assembler,po_external]
),(
idtok:_VARARGS;
pd_flags : pd_interface+pd_implemen+pd_procvar;
handler : nil;
pocall : pocall_none;
pooption : [po_varargs];
mutexclpocall : [pocall_internproc,pocall_stdcall,pocall_register,
pocall_inline,pocall_far16,pocall_fpccall];
mutexclpotype : [];
mutexclpo : [po_assembler,po_interrupt,po_leftright]
),(
idtok:_COMPILERPROC;
pd_flags : pd_interface+pd_implemen+pd_body+pd_notobjintf;
handler : nil;
pocall : pocall_compilerproc;
pooption : [];
mutexclpocall : [];
mutexclpotype : [];
mutexclpo : [po_interrupt]
)
);
function is_proc_directive(tok:ttoken):boolean;
var
i : longint;
begin
is_proc_directive:=false;
for i:=1 to num_proc_directives do
if proc_direcdata[i].idtok=idtoken then
begin
is_proc_directive:=true;
exit;
end;
end;
function parse_proc_direc(var pdflags:word):boolean;
{
Parse the procedure directive, returns true if a correct directive is found
}
var
p : longint;
found : boolean;
name : stringid;
begin
parse_proc_direc:=false;
name:=tokeninfo^[idtoken].str;
found:=false;
{ Hint directive? Then exit immediatly }
if (m_hintdirective in aktmodeswitches) then
begin
case idtoken of
_LIBRARY,
_PLATFORM,
_DEPRECATED :
exit;
end;
end;
{ retrieve data for directive if found }
for p:=1 to num_proc_directives do
if proc_direcdata[p].idtok=idtoken then
begin
found:=true;
break;
end;
{ Check if the procedure directive is known }
if not found then
begin
{ parsing a procvar type the name can be any
next variable !! }
if (pdflags and (pd_procvar or pd_object))=0 then
Message1(parser_w_unknown_proc_directive_ignored,name);
exit;
end;
{ static needs a special treatment }
if (idtoken=_STATIC) and not (cs_static_keyword in aktmoduleswitches) then
exit;
{ Conflicts between directives ? }
if (aktprocdef.proctypeoption in proc_direcdata[p].mutexclpotype) or
(aktprocdef.proccalloption in proc_direcdata[p].mutexclpocall) or
((aktprocdef.procoptions*proc_direcdata[p].mutexclpo)<>[]) then
begin
Message1(parser_e_proc_dir_conflict,name);
exit;
end;
{ set calling convention }
if proc_direcdata[p].pocall<>pocall_none then
begin
if aktprocdef.proccalloption<>pocall_none then
begin
Message2(parser_w_proc_overriding_calling,
proccalloptionStr[aktprocdef.proccalloption],
proccalloptionStr[proc_direcdata[p].pocall]);
end;
aktprocdef.proccalloption:=proc_direcdata[p].pocall;
end;
{ check if method and directive not for object, like public.
This needs to be checked also for procvars }
if ((proc_direcdata[p].pd_flags and pd_notobject)<>0) and
(aktprocdef.owner.symtabletype=objectsymtable) then
exit;
if aktprocdef.deftype=procdef then
begin
{ Check if the directive is only for objects }
if ((proc_direcdata[p].pd_flags and pd_object)<>0) and
not assigned(aktprocdef._class) then
exit;
{ check if method and directive not for interface }
if ((proc_direcdata[p].pd_flags and pd_notobjintf)<>0) and
is_interface(aktprocdef._class) then
exit;
end;
{ consume directive, and turn flag on }
consume(token);
parse_proc_direc:=true;
{ Check the pd_flags if the directive should be allowed }
if ((pdflags and pd_interface)<>0) and
((proc_direcdata[p].pd_flags and pd_interface)=0) then
begin
Message1(parser_e_proc_dir_not_allowed_in_interface,name);
exit;
end;
if ((pdflags and pd_implemen)<>0) and
((proc_direcdata[p].pd_flags and pd_implemen)=0) then
begin
Message1(parser_e_proc_dir_not_allowed_in_implementation,name);
exit;
end;
if ((pdflags and pd_procvar)<>0) and
((proc_direcdata[p].pd_flags and pd_procvar)=0) then
begin
Message1(parser_e_proc_dir_not_allowed_in_procvar,name);
exit;
end;
{ Return the new pd_flags }
if (proc_direcdata[p].pd_flags and pd_body)=0 then
pdflags:=pdflags and (not pd_body);
if (proc_direcdata[p].pd_flags and pd_global)<>0 then
pdflags:=pdflags or pd_global;
{ Add the correct flag }
aktprocdef.procoptions:=aktprocdef.procoptions+proc_direcdata[p].pooption;
{ Call the handler }
if pointer({$ifndef FPCPROCVAR}@{$endif}proc_direcdata[p].handler)<>nil then
proc_direcdata[p].handler{$ifdef FPCPROCVAR}(){$endif};
end;
procedure handle_calling_convention(sym:tprocsym;def:tabstractprocdef);
begin
{ set the default calling convention }
if def.proccalloption=pocall_none then
def.proccalloption:=aktdefproccall;
case def.proccalloption of
pocall_cdecl :
begin
{ use popstack and save std registers }
include(def.procoptions,po_clearstack);
include(def.procoptions,po_savestdregs);
{ set mangledname }
if (def.deftype=procdef) then
begin
if not tprocdef(def).has_mangledname then
begin
if assigned(tprocdef(def)._class) then
tprocdef(def).setmangledname(target_info.Cprefix+tprocdef(def)._class.objrealname^+'_'+sym.realname)
else
tprocdef(def).setmangledname(target_info.Cprefix+sym.realname);
end;
if not assigned(tprocdef(def).parast) then
internalerror(200110234);
{ do not copy on local !! }
tprocdef(def).parast.foreach_static({$ifdef FPCPROCVAR}@{$endif}resetvaluepara,nil);
{ Adjust alignment to match cdecl or stdcall }
tprocdef(def).parast.dataalignment:=std_param_align;
end;
end;
pocall_cppdecl :
begin
if not assigned(sym) then
internalerror(200110231);
{ use popstack and save std registers }
include(def.procoptions,po_clearstack);
include(def.procoptions,po_savestdregs);
{ set mangledname }
if (def.deftype=procdef) then
begin
if not tprocdef(def).has_mangledname then
tprocdef(def).setmangledname(target_info.Cprefix+tprocdef(def).cplusplusmangledname);
if not assigned(tprocdef(def).parast) then
internalerror(200110235);
{ do not copy on local !! }
tprocdef(def).parast.foreach_static({$ifdef FPCPROCVAR}@{$endif}resetvaluepara,nil);
{ Adjust alignment to match cdecl or stdcall }
tprocdef(def).parast.dataalignment:=std_param_align;
end;
end;
pocall_stdcall :
begin
include(def.procoptions,po_savestdregs);
if (def.deftype=procdef) then
begin
if not assigned(tprocdef(def).parast) then
internalerror(200110236);
{ Adjust alignment to match cdecl or stdcall }
tprocdef(def).parast.dataalignment:=std_param_align;
end;
end;
pocall_safecall :
begin
include(def.procoptions,po_savestdregs);
end;
pocall_compilerproc :
begin
if (not assigned(sym)) or
(def.deftype<>procdef) then
internalerror(200110232);
tprocdef(def).setmangledname(lower(sym.name));
end;
pocall_pascal :
begin
include(def.procoptions,po_leftright);
end;
pocall_register :
begin
Message1(parser_w_proc_directive_ignored,'REGISTER');
end;
pocall_far16 :
begin
{ Temporary stub, must be rewritten to support OS/2 far16 }
Message1(parser_w_proc_directive_ignored,'FAR16');
end;
pocall_system :
begin
include(def.procoptions,po_clearstack);
if (not assigned(sym)) or
(def.deftype<>procdef) then
internalerror(200110233);
if not tprocdef(def).has_mangledname then
tprocdef(def).setmangledname(sym.realname);
end;
pocall_palmossyscall :
begin
{ use popstack and save std registers }
include(def.procoptions,po_clearstack);
include(def.procoptions,po_savestdregs);
if (def.deftype=procdef) then
begin
if not assigned(tprocdef(def).parast) then
internalerror(200110236);
{ do not copy on local !! }
tprocdef(def).parast.foreach_static({$ifdef FPCPROCVAR}@{$endif}resetvaluepara,nil);
{ Adjust positions of args for cdecl or stdcall }
tprocdef(def).parast.dataalignment:=std_param_align;
end;
end;
pocall_inline :
begin
if not(cs_support_inline in aktmoduleswitches) then
begin
Message(parser_e_proc_inline_not_supported);
def.proccalloption:=pocall_fpccall;
end;
end;
end;
{ add mangledname to external list }
if (def.deftype=procdef) and
(po_external in def.procoptions) and
target_info.DllScanSupported then
current_module.externals.insert(tExternalsItem.create(tprocdef(def).mangledname));
end;
procedure calc_parasymtable_addresses(def:tprocdef);
var
lastps,
highps,ps : tsym;
st : tsymtable;
begin
st:=def.parast;
if po_leftright in def.procoptions then
begin
{ pushed in reversed order, left to right }
highps:=nil;
lastps:=nil;
while assigned(st.symindex.first) and (lastps<>tsym(st.symindex.first)) do
begin
ps:=tsym(st.symindex.first);
while assigned(ps.indexnext) and (tsym(ps.indexnext)<>lastps) do
ps:=tsym(ps.indexnext);
if ps.typ=varsym then
begin
{ Wait with inserting the high value, it needs to be inserted
after the corresponding parameter }
if Copy(ps.name,1,4)='high' then
highps:=ps
else
begin
st.insertvardata(ps);
{ add also the high tree if it was saved }
if assigned(highps) then
begin
st.insertvardata(highps);
highps:=nil;
end;
end;
end;
lastps:=ps;
end;
if assigned(highps) then
internalerror(200208257);
end
else
begin
{ pushed in normal order, right to left }
ps:=tsym(st.symindex.first);
while assigned(ps) do
begin
if ps.typ=varsym then
st.insertvardata(ps);
ps:=tsym(ps.indexnext);
end;
end;
end;
procedure parse_proc_directives(var pdflags:word);
{
Parse the procedure directives. It does not matter if procedure directives
are written using ;procdir; or ['procdir'] syntax.
}
var
res : boolean;
begin
while token in [_ID,_LECKKLAMMER] do
begin
if try_to_consume(_LECKKLAMMER) then
begin
repeat
parse_proc_direc(pdflags);
until not try_to_consume(_COMMA);
consume(_RECKKLAMMER);
{ we always expect at least '[];' }
res:=true;
end
else
begin
res:=parse_proc_direc(pdflags);
end;
{ A procedure directive normally followed by a semicolon, but in
a const section we should stop when _EQUAL is found }
if res then
begin
if (block_type=bt_const) and
(token=_EQUAL) then
break;
{ support procedure proc;stdcall export; in Delphi mode only }
if not((m_delphi in aktmodeswitches) and
is_proc_directive(token)) then
consume(_SEMICOLON);
end
else
break;
end;
handle_calling_convention(aktprocsym,aktprocdef);
{ calculate addresses in parasymtable }
if aktprocdef.deftype=procdef then
calc_parasymtable_addresses(aktprocdef);
end;
procedure parse_var_proc_directives(var sym : tsym);
var
pdflags : word;
oldsym : tprocsym;
olddef : tprocdef;
pd : tabstractprocdef;
begin
oldsym:=aktprocsym;
olddef:=aktprocdef;
pdflags:=pd_procvar;
{ we create a temporary aktprocsym to read the directives }
aktprocsym:=tprocsym.create(sym.name);
case sym.typ of
varsym :
pd:=tabstractprocdef(tvarsym(sym).vartype.def);
typedconstsym :
pd:=tabstractprocdef(ttypedconstsym(sym).typedconsttype.def);
typesym :
pd:=tabstractprocdef(ttypesym(sym).restype.def);
else
internalerror(994932432);
end;
if pd.deftype<>procvardef then
internalerror(994932433);
tabstractprocdef(aktprocdef):=pd;
{ names should never be used anyway }
inc(lexlevel);
parse_proc_directives(pdflags);
dec(lexlevel);
aktprocsym.free;
aktprocsym:=oldsym;
aktprocdef:=olddef;
end;
procedure parse_object_proc_directives(var sym : tprocsym);
var
pdflags : word;
begin
pdflags:=pd_object;
inc(lexlevel);
parse_proc_directives(pdflags);
dec(lexlevel);
if (po_containsself in aktprocdef.procoptions) and
(([po_msgstr,po_msgint]*aktprocdef.procoptions)=[]) then
Message(parser_e_self_in_non_message_handler);
end;
function proc_add_definition(aprocsym:tprocsym;var aprocdef : tprocdef) : boolean;
{
Add definition aprocdef to the overloaded definitions of aprocsym. If a
forwarddef is found and reused it returns true
}
var
hd : tprocdef;
ad,fd : tsym;
forwardfound : boolean;
i : cardinal;
begin
forwardfound:=false;
{ check overloaded functions if the same function already exists }
for i:=1 to aprocsym.procdef_count do
begin
hd:=aprocsym.procdef[i];
{ check the parameters, for delphi/tp it is possible to
leave the parameters away in the implementation (forwarddef=false).
But for an overload declared function this is not allowed }
if { check if empty implementation arguments match is allowed }
(
not(m_repeat_forward in aktmodeswitches) and
not(aprocdef.forwarddef) and
(aprocdef.maxparacount=0) and
not(po_overload in hd.procoptions)
) or
{ check arguments }
(
equal_paras(aprocdef.para,hd.para,cp_none) and
{ for operators equal_paras is not enough !! }
((aprocdef.proctypeoption<>potype_operator) or (optoken<>_ASSIGNMENT) or
is_equal(hd.rettype.def,aprocdef.rettype.def))
) then
begin
{ Check if we've found the forwarddef, if found then
we need to update the forward def with the current
implementation settings }
if hd.forwarddef then
begin
forwardfound:=true;
{ Check if the procedure type and return type are correct,
also the parameters must match also with the type }
if (hd.proctypeoption<>aprocdef.proctypeoption) or
(
(m_repeat_forward in aktmodeswitches) and
(
not(is_equal(hd.rettype.def,aprocdef.rettype.def) and
((aprocdef.maxparacount=0) or
equal_paras(aprocdef.para,hd.para,cp_all))
)
)
) then
begin
MessagePos1(aprocdef.fileinfo,parser_e_header_dont_match_forward,
aprocdef.fullprocname);
break;
end;
{ Check if both are declared forward }
if hd.forwarddef and aprocdef.forwarddef then
begin
MessagePos1(aprocdef.fileinfo,parser_e_function_already_declared_public_forward,
aprocdef.fullprocname);
end;
{ internconst or internproc only need to be defined once }
if (hd.proccalloption=pocall_internproc) then
aprocdef.proccalloption:=hd.proccalloption
else
if (aprocdef.proccalloption=pocall_internproc) then
hd.proccalloption:=aprocdef.proccalloption;
if (po_internconst in hd.procoptions) then
include(aprocdef.procoptions,po_internconst)
else if (po_internconst in aprocdef.procoptions) then
include(hd.procoptions,po_internconst);
{ Check calling convention }
if (hd.proccalloption<>aprocdef.proccalloption) then
begin
{ For delphi check if the current implementation has no proccalloption, then
take the options from the interface }
if not(m_delphi in aktmodeswitches) or
(aprocdef.proccalloption<>pocall_none) then
MessagePos(aprocdef.fileinfo,parser_e_call_convention_dont_match_forward);
{ restore interface settings }
aprocdef.proccalloption:=hd.proccalloption;
aprocdef.has_mangledname:=hd.has_mangledname;
if hd.has_mangledname then
aprocdef.setmangledname(hd.mangledname);
end;
{ Check manglednames }
if (m_repeat_forward in aktmodeswitches) or
aprocdef.haspara then
begin
{ If mangled names are equal then they have the same amount of arguments }
{ We can check the names of the arguments }
{ both symtables are in the same order from left to right }
ad:=tsym(hd.parast.symindex.first);
fd:=tsym(aprocdef.parast.symindex.first);
repeat
{ skip default parameter constsyms }
while assigned(ad) and (ad.typ<>varsym) do
ad:=tsym(ad.indexnext);
while assigned(fd) and (fd.typ<>varsym) do
fd:=tsym(fd.indexnext);
{ stop when one of the two lists is at the end }
if not assigned(ad) or not assigned(fd) then
break;
if (ad.name<>fd.name) then
begin
MessagePos3(aprocdef.fileinfo,parser_e_header_different_var_names,
aprocsym.name,ad.name,fd.name);
break;
end;
ad:=tsym(ad.indexnext);
fd:=tsym(fd.indexnext);
until false;
if assigned(ad) or assigned(fd) then
internalerror(200204178);
end;
{ Everything is checked, now we can update the forward declaration
with the new data from the implementation }
hd.forwarddef:=aprocdef.forwarddef;
hd.hasforward:=true;
hd.parast.address_fixup:=aprocdef.parast.address_fixup;
hd.procoptions:=hd.procoptions+aprocdef.procoptions;
if hd.extnumber=65535 then
hd.extnumber:=aprocdef.extnumber;
while not aprocdef.aliasnames.empty do
hd.aliasnames.insert(aprocdef.aliasnames.getfirst);
{ update mangledname if the implementation has a fixed mangledname set }
if aprocdef.has_mangledname then
begin
{ rename also asmsymbol first, because the name can already be used }
objectlibrary.renameasmsymbol(hd.mangledname,aprocdef.mangledname);
{ update the mangledname }
hd.has_mangledname:=true;
hd.setmangledname(aprocdef.mangledname);
end;
{ for compilerproc defines we need to rename and update the
symbolname to lowercase }
if (aprocdef.proccalloption=pocall_compilerproc) then
begin
{ rename to lowercase so users can't access it }
aprocsym.owner.rename(aprocsym.name,lower(aprocsym.name));
{ also update the realname that is stored in the ppu }
stringdispose(aprocsym._realname);
aprocsym._realname:=stringdup('$'+aprocsym.name);
{ the mangeled name is already changed by the pd_compilerproc }
{ handler. It must be done immediately because if we have a }
{ call to a compilerproc before it's implementation is }
{ encountered, it must already use the new mangled name (JM) }
end;
{ return the forwarddef }
aprocdef:=hd;
end
else
begin
{ abstract methods aren't forward defined, but this }
{ needs another error message }
if (po_abstractmethod in hd.procoptions) then
MessagePos(aprocdef.fileinfo,parser_e_abstract_no_definition)
else
MessagePos(aprocdef.fileinfo,parser_e_overloaded_have_same_parameters);
end;
{ we found one proc with the same arguments, there are no others
so we can stop }
break;
end;
{ check for allowing overload directive }
if not(m_fpc in aktmodeswitches) then
begin
{ overload directive turns on overloading }
if ((po_overload in aprocdef.procoptions) or
(po_overload in hd.procoptions)) then
begin
{ check if all procs have overloading, but not if the proc was
already declared forward, then the check is already done }
if not(hd.hasforward or
(aprocdef.forwarddef<>hd.forwarddef) or
((po_overload in aprocdef.procoptions) and
(po_overload in hd.procoptions))) then
begin
MessagePos1(aprocdef.fileinfo,parser_e_no_overload_for_all_procs,aprocsym.realname);
break;
end;
end
else
begin
if not(hd.forwarddef) then
begin
MessagePos(aprocdef.fileinfo,parser_e_procedure_overloading_is_off);
break;
end;
end;
end; { equal arguments }
end;
{ if we didn't reuse a forwarddef then we add the procdef to the overloaded
list }
if not forwardfound then
begin
aprocsym.addprocdef(aprocdef);
{ add overloadnumber for unique naming, the overloadcount is
counted per module and 0 for the first procedure }
aprocdef.overloadnumber:=aprocsym.overloadcount;
inc(aprocsym.overloadcount);
end;
{ insert otsym only in the right symtable }
if ((procinfo.flags and pi_operator)<>0) and
assigned(otsym) then
begin
if not parse_only then
begin
if paramanager.ret_in_param(aprocdef.rettype.def) then
begin
aprocdef.parast.insert(otsym);
{ this allows to read the funcretoffset }
otsym.address:=-4;
otsym.varspez:=vs_var;
end
else
begin
aprocdef.localst.insert(otsym);
aprocdef.localst.insertvardata(otsym);
end;
end
else
begin
{ this is not required anymore }
otsym.free;
otsym:=nil;
end;
end;
paramanager.create_param_loc_info(aprocdef);
proc_add_definition:=forwardfound;
end;
end.
{
$Log$
Revision 1.72 2002-09-09 17:34:15 peter
* tdicationary.replace added to replace and item in a dictionary. This
is only allowed for the same name
* varsyms are inserted in symtable before the types are parsed. This
fixes the long standing "var longint : longint" bug
- consume_idlist and idstringlist removed. The loops are inserted
at the callers place and uses the symtable for duplicate id checking
Revision 1.71 2002/09/07 15:25:06 peter
* old logs removed and tabs fixed
Revision 1.70 2002/09/03 16:26:27 daniel
* Make Tprocdef.defs protected
Revision 1.69 2002/09/01 12:11:33 peter
* calc param_offset after parameters are read, because the calculation
depends on po_containself
Revision 1.68 2002/08/25 19:25:20 peter
* sym.insert_in_data removed
* symtable.insertvardata/insertconstdata added
* removed insert_in_data call from symtable.insert, it needs to be
called separatly. This allows to deref the address calculation
* procedures now calculate the parast addresses after the procedure
directives are parsed. This fixes the cdecl parast problem
* push_addr_param has an extra argument that specifies if cdecl is used
or not
Revision 1.67 2002/08/25 11:33:06 peter
* also check the paratypes when a forward was found
Revision 1.66 2002/08/19 19:36:44 peter
* More fixes for cross unit inlining, all tnodes are now implemented
* Moved pocall_internconst to po_internconst because it is not a
calling type at all and it conflicted when inlining of these small
functions was requested
Revision 1.65 2002/08/18 20:06:24 peter
* inlining is now also allowed in interface
* renamed write/load to ppuwrite/ppuload
* tnode storing in ppu
* nld,ncon,nbas are already updated for storing in ppu
Revision 1.64 2002/08/17 09:23:39 florian
* first part of procinfo rewrite
Revision 1.63 2002/08/11 14:32:27 peter
* renamed current_library to objectlibrary
Revision 1.62 2002/08/11 13:24:12 peter
* saving of asmsymbols in ppu supported
* asmsymbollist global is removed and moved into a new class
tasmlibrarydata that will hold the info of a .a file which
corresponds with a single module. Added librarydata to tmodule
to keep the library info stored for the module. In the future the
objectfiles will also be stored to the tasmlibrarydata class
* all getlabel/newasmsymbol and friends are moved to the new class
Revision 1.61 2002/07/26 21:15:40 florian
* rewrote the system handling
Revision 1.60 2002/07/20 11:57:55 florian
* types.pas renamed to defbase.pas because D6 contains a types
unit so this would conflicts if D6 programms are compiled
+ Willamette/SSE2 instructions to assembler added
Revision 1.59 2002/07/11 14:41:28 florian
* start of the new generic parameter handling
Revision 1.58 2002/07/01 18:46:25 peter
* internal linker
* reorganized aasm layer
Revision 1.57 2002/05/18 13:34:12 peter
* readded missing revisions
Revision 1.56 2002/05/16 19:46:42 carl
+ defines.inc -> fpcdefs.inc to avoid conflicts if compiling by hand
+ try to fix temp allocation (still in ifdef)
+ generic constructor calls
+ start of tassembler / tmodulebase class cleanup
Revision 1.54 2002/05/12 16:53:08 peter
* moved entry and exitcode to ncgutil and cgobj
* foreach gets extra argument for passing local data to the
iterator function
* -CR checks also class typecasts at runtime by changing them
into as
* fixed compiler to cycle with the -CR option
* fixed stabs with elf writer, finally the global variables can
be watched
* removed a lot of routines from cga unit and replaced them by
calls to cgobj
* u32bit-s32bit updates for and,or,xor nodes. When one element is
u32bit then the other is typecasted also to u32bit without giving
a rangecheck warning/error.
* fixed pascal calling method with reversing also the high tree in
the parast, detected by tcalcst3 test
Revision 1.53 2002/04/21 19:02:04 peter
* removed newn and disposen nodes, the code is now directly
inlined from pexpr
* -an option that will write the secondpass nodes to the .s file, this
requires EXTDEBUG define to actually write the info
* fixed various internal errors and crashes due recent code changes
Revision 1.52 2002/04/20 21:32:24 carl
+ generic FPC_CHECKPOINTER
+ first parameter offset in stack now portable
* rename some constants
+ move some cpu stuff to other units
- remove unused constents
* fix stacksize for some targets
* fix generic size problems which depend now on EXTEND_SIZE constant
Revision 1.51 2002/04/20 15:27:05 carl
- remove ifdef i386 define
Revision 1.50 2002/04/19 15:46:02 peter
* mangledname rewrite, tprocdef.mangledname is now created dynamicly
in most cases and not written to the ppu
* add mangeledname_prefix() routine to generate the prefix of
manglednames depending on the current procedure, object and module
* removed static procprefix since the mangledname is now build only
on demand from tprocdef.mangledname
}