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1233 lines
48 KiB
ObjectPascal
1233 lines
48 KiB
ObjectPascal
{
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$Id$
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Copyright (c) 1998-2002 by Florian Klaempfl
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Does object types for Free Pascal
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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****************************************************************************
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}
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unit pdecobj;
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{$i fpcdefs.inc}
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interface
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uses
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globtype,symtype,symdef;
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{ parses a object declaration }
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function object_dec(const n : stringid;fd : tobjectdef) : tdef;
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implementation
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uses
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cutils,cclasses,
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globals,verbose,systems,tokens,
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symconst,symbase,symsym,symtable,defbase,
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cgbase,
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node,nld,nmem,ncon,ncnv,ncal,pass_1,
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scanner,
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pbase,pexpr,pdecsub,pdecvar,ptype;
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function object_dec(const n : stringid;fd : tobjectdef) : tdef;
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{ this function parses an object or class declaration }
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var
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there_is_a_destructor : boolean;
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classtype : tobjectdeftype;
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childof : tobjectdef;
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aktclass : tobjectdef;
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procedure constructor_head;
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begin
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consume(_CONSTRUCTOR);
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{ must be at same level as in implementation }
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inc(lexlevel);
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parse_proc_head(potype_constructor);
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dec(lexlevel);
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if (cs_constructor_name in aktglobalswitches) and (aktprocsym.name<>'INIT') then
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Message(parser_e_constructorname_must_be_init);
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include(aktclass.objectoptions,oo_has_constructor);
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consume(_SEMICOLON);
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begin
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if is_class(aktclass) then
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begin
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{ CLASS constructors return the created instance }
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aktprocdef.rettype.def:=aktclass;
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end
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else
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begin
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{ OBJECT constructors return a boolean }
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aktprocdef.rettype:=booltype;
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end;
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end;
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end;
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procedure property_dec;
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{ convert a node tree to symlist and return the last
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symbol }
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function parse_symlist(pl:tsymlist):boolean;
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var
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idx : longint;
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sym : tsym;
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def : tdef;
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st : tsymtable;
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begin
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parse_symlist:=true;
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def:=nil;
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if token=_ID then
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begin
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sym:=search_class_member(aktclass,pattern);
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if assigned(sym) then
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begin
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case sym.typ of
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varsym :
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begin
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pl.addsym(sl_load,sym);
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def:=tvarsym(sym).vartype.def;
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end;
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procsym :
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begin
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pl.addsym(sl_call,sym);
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end;
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end;
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end
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else
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begin
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Message1(parser_e_illegal_field_or_method,pattern);
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parse_symlist:=false;
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end;
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consume(_ID);
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repeat
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case token of
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_ID,
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_SEMICOLON :
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begin
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break;
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end;
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_POINT :
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begin
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consume(_POINT);
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if assigned(def) then
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begin
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st:=def.getsymtable(gs_record);
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if assigned(st) then
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begin
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sym:=searchsymonlyin(st,pattern);
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if assigned(sym) then
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begin
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pl.addsym(sl_subscript,sym);
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case sym.typ of
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varsym :
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def:=tvarsym(sym).vartype.def;
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else
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begin
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Message1(sym_e_illegal_field,pattern);
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parse_symlist:=false;
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end;
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end;
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end
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else
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begin
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Message1(sym_e_illegal_field,pattern);
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parse_symlist:=false;
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end;
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end
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else
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begin
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Message(cg_e_invalid_qualifier);
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parse_symlist:=false;
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end;
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end;
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consume(_ID);
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end;
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_LECKKLAMMER :
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begin
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consume(_LECKKLAMMER);
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repeat
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if def.deftype=arraydef then
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begin
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idx:=get_intconst;
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pl.addconst(sl_vec,idx);
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def:=tarraydef(def).elementtype.def;
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end
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else
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begin
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Message(cg_e_invalid_qualifier);
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parse_symlist:=false;
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end;
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until not try_to_consume(_COMMA);
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consume(_RECKKLAMMER);
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end;
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else
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begin
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Message(parser_e_ill_property_access_sym);
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parse_symlist:=false;
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break;
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end;
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end;
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until false;
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end
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else
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begin
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Message(parser_e_ill_property_access_sym);
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parse_symlist:=false;
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end;
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pl.def:=def;
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end;
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var
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sym : tsym;
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propertyparas : tlinkedlist;
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{ returns the matching procedure to access a property }
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function get_procdef : tprocdef;
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var
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p : pprocdeflist;
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begin
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get_procdef:=nil;
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p:=tprocsym(sym).defs;
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while assigned(p) do
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begin
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if equal_paras(p^.def.para,propertyparas,cp_value_equal_const) or
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convertable_paras(p^.def.para,propertyparas,cp_value_equal_const) then
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begin
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get_procdef:=p^.def;
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exit;
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end;
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p:=p^.next;
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end;
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end;
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var
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hp2,datacoll : tparaitem;
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p : tpropertysym;
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overriden : tsym;
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hs : string;
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varspez : tvarspez;
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sc : tidstringlist;
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s : string;
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tt : ttype;
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declarepos : tfileposinfo;
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pp : pprocdeflist;
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pd : tprocdef;
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pt : tnode;
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propname : stringid;
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begin
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{ check for a class }
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aktprocsym:=nil;
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aktprocdef:=nil;
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if not((is_class_or_interface(aktclass)) or
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((m_delphi in aktmodeswitches) and (is_object(aktclass)))) then
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Message(parser_e_syntax_error);
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consume(_PROPERTY);
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propertyparas:=TParaLinkedList.Create;
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datacoll:=nil;
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if token=_ID then
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begin
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p:=tpropertysym.create(orgpattern);
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propname:=pattern;
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consume(_ID);
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{ property parameters ? }
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if token=_LECKKLAMMER then
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begin
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if (sp_published in current_object_option) then
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Message(parser_e_cant_publish_that_property);
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{ create a list of the parameters in propertyparas }
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consume(_LECKKLAMMER);
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inc(testcurobject);
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repeat
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if token=_VAR then
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begin
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consume(_VAR);
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varspez:=vs_var;
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end
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else if token=_CONST then
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begin
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consume(_CONST);
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varspez:=vs_const;
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end
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else if (idtoken=_OUT) and (m_out in aktmodeswitches) then
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begin
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consume(_OUT);
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varspez:=vs_out;
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end
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else varspez:=vs_value;
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sc:=consume_idlist;
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{$ifdef fixLeaksOnError}
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strContStack.push(sc);
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{$endif fixLeaksOnError}
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if token=_COLON then
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begin
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consume(_COLON);
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if token=_ARRAY then
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begin
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{
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if (varspez<>vs_const) and
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(varspez<>vs_var) then
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begin
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varspez:=vs_const;
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Message(parser_e_illegal_open_parameter);
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end;
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}
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consume(_ARRAY);
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consume(_OF);
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{ define range and type of range }
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tt.setdef(tarraydef.create(0,-1,s32bittype));
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{ define field type }
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single_type(tarraydef(tt.def).elementtype,s,false);
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end
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else
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single_type(tt,s,false);
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end
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else
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tt:=cformaltype;
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repeat
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s:=sc.get(declarepos);
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if s='' then
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break;
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hp2:=TParaItem.create;
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hp2.paratyp:=varspez;
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hp2.paratype:=tt;
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propertyparas.insert(hp2);
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until false;
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{$ifdef fixLeaksOnError}
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if strContStack.pop <> sc then
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writeln('problem with strContStack in ptype');
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{$endif fixLeaksOnError}
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sc.free;
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until not try_to_consume(_SEMICOLON);
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dec(testcurobject);
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consume(_RECKKLAMMER);
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{ the parser need to know if a property has parameters, the
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index parameter doesn't count (PFV) }
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if not(propertyparas.empty) then
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include(p.propoptions,ppo_hasparameters);
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end;
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{ overriden property ? }
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{ force property interface, if there is a property parameter }
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if (token=_COLON) or not(propertyparas.empty) then
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begin
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consume(_COLON);
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single_type(p.proptype,hs,false);
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if (idtoken=_INDEX) then
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begin
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consume(_INDEX);
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pt:=comp_expr(true);
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if is_constnode(pt) and
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is_ordinal(pt.resulttype.def) and
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(not is_64bitint(pt.resulttype.def)) then
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p.index:=tordconstnode(pt).value
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else
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begin
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Message(parser_e_invalid_property_index_value);
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p.index:=0;
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end;
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p.indextype.setdef(pt.resulttype.def);
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include(p.propoptions,ppo_indexed);
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{ concat a longint to the para template }
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hp2:=TParaItem.Create;
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hp2.paratyp:=vs_value;
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hp2.paratype:=p.indextype;
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propertyparas.insert(hp2);
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pt.free;
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end;
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end
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else
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begin
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{ do an property override }
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overriden:=search_class_member(aktclass,propname);
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if assigned(overriden) and (overriden.typ=propertysym) then
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begin
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p.dooverride(tpropertysym(overriden));
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end
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else
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begin
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p.proptype:=generrortype;
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message(parser_e_no_property_found_to_override);
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end;
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end;
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if (sp_published in current_object_option) and
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not(p.proptype.def.is_publishable) then
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Message(parser_e_cant_publish_that_property);
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{ create data defcoll to allow correct parameter checks }
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datacoll:=TParaItem.Create;
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datacoll.paratyp:=vs_value;
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datacoll.paratype:=p.proptype;
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if try_to_consume(_READ) then
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begin
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p.readaccess.clear;
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if parse_symlist(p.readaccess) then
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begin
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sym:=p.readaccess.firstsym^.sym;
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case sym.typ of
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procsym :
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begin
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pd:=get_procdef;
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if not(assigned(pd)) or
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not(is_equal(pd.rettype.def,p.proptype.def)) then
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Message(parser_e_ill_property_access_sym);
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p.readaccess.setdef(pd);
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end;
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varsym :
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begin
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if CheckTypes(p.readaccess.def,p.proptype.def) then
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begin
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{ property parameters are allowed if this is
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an indexed property, because the index is then
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the parameter.
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Note: In the help of Kylix it is written
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that it isn't allowed, but the compiler accepts it (PFV) }
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if (ppo_hasparameters in p.propoptions) then
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Message(parser_e_ill_property_access_sym);
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end;
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end;
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else
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Message(parser_e_ill_property_access_sym);
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end;
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end;
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end;
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if try_to_consume(_WRITE) then
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begin
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p.writeaccess.clear;
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if parse_symlist(p.writeaccess) then
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begin
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sym:=p.writeaccess.firstsym^.sym;
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case sym.typ of
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procsym :
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begin
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{ insert data entry to check access method }
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propertyparas.insert(datacoll);
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pd:=get_procdef;
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{ ... and remove it }
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propertyparas.remove(datacoll);
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if not(assigned(pd)) then
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Message(parser_e_ill_property_access_sym);
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p.writeaccess.setdef(pd);
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end;
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varsym :
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begin
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if CheckTypes(p.writeaccess.def,p.proptype.def) then
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begin
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{ property parameters are allowed if this is
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an indexed property, because the index is then
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the parameter.
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Note: In the help of Kylix it is written
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that it isn't allowed, but the compiler accepts it (PFV) }
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if (ppo_hasparameters in p.propoptions) then
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Message(parser_e_ill_property_access_sym);
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end;
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end;
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else
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Message(parser_e_ill_property_access_sym);
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end;
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end;
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end;
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include(p.propoptions,ppo_stored);
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if try_to_consume(_STORED) then
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begin
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p.storedaccess.clear;
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case token of
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_ID:
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begin
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{ in the case that idtoken=_DEFAULT }
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{ we have to do nothing except }
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{ setting ppo_stored, it's the same }
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{ as stored true }
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if idtoken<>_DEFAULT then
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begin
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if parse_symlist(p.storedaccess) then
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begin
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sym:=p.storedaccess.firstsym^.sym;
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case sym.typ of
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procsym :
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begin
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pp:=tprocsym(sym).defs;
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while assigned(pp) do
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begin
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{ the stored function shouldn't have any parameters }
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if pp^.def.Para.empty then
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break;
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pp:=pp^.next;
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end;
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{ found we a procedure and does it really return a bool? }
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if assigned(pp) and
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is_boolean(pp^.def.rettype.def) then
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p.storedaccess.setdef(pp^.def)
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else
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Message(parser_e_ill_property_storage_sym);
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end;
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varsym :
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begin
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if (ppo_hasparameters in p.propoptions) or
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not(is_boolean(p.storedaccess.def)) then
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Message(parser_e_stored_property_must_be_boolean);
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end;
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else
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Message(parser_e_ill_property_access_sym);
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end;
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end;
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end;
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end;
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_FALSE:
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begin
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consume(_FALSE);
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exclude(p.propoptions,ppo_stored);
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end;
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_TRUE:
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consume(_TRUE);
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end;
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end;
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if try_to_consume(_DEFAULT) then
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begin
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if not(is_ordinal(p.proptype.def) or
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is_64bitint(p.proptype.def) or
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((p.proptype.def.deftype=setdef) and
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(tsetdef(p.proptype.def).settype=smallset))) or
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((p.proptype.def.deftype=arraydef) and
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(ppo_indexed in p.propoptions)) or
|
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(ppo_hasparameters in p.propoptions) then
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Message(parser_e_property_cant_have_a_default_value);
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{ Get the result of the default, the firstpass is
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needed to support values like -1 }
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pt:=comp_expr(true);
|
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if (p.proptype.def.deftype=setdef) and
|
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(pt.nodetype=arrayconstructorn) then
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begin
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arrayconstructor_to_set(pt);
|
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do_resulttypepass(pt);
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end;
|
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inserttypeconv(pt,p.proptype);
|
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if not(is_constnode(pt)) then
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Message(parser_e_property_default_value_must_const);
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if pt.nodetype=setconstn then
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p.default:=plongint(tsetconstnode(pt).value_set)^
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else
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p.default:=tordconstnode(pt).value;
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pt.free;
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end
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else if try_to_consume(_NODEFAULT) then
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begin
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p.default:=0;
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end;
|
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symtablestack.insert(p);
|
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{ default property ? }
|
|
consume(_SEMICOLON);
|
|
if (idtoken=_DEFAULT) then
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begin
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consume(_DEFAULT);
|
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{ overriding a default propertyp is allowed
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p2:=search_default_property(aktclass);
|
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if assigned(p2) then
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message1(parser_e_only_one_default_property,
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tobjectdef(p2.owner.defowner)^.objrealname^)
|
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else
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}
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|
begin
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include(p.propoptions,ppo_defaultproperty);
|
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if propertyparas.empty then
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message(parser_e_property_need_paras);
|
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end;
|
|
consume(_SEMICOLON);
|
|
end;
|
|
{ clean up }
|
|
if assigned(datacoll) then
|
|
datacoll.free;
|
|
end
|
|
else
|
|
begin
|
|
consume(_ID);
|
|
consume(_SEMICOLON);
|
|
end;
|
|
propertyparas.free;
|
|
end;
|
|
|
|
|
|
procedure destructor_head;
|
|
begin
|
|
consume(_DESTRUCTOR);
|
|
inc(lexlevel);
|
|
parse_proc_head(potype_destructor);
|
|
dec(lexlevel);
|
|
if (cs_constructor_name in aktglobalswitches) and (aktprocsym.name<>'DONE') then
|
|
Message(parser_e_destructorname_must_be_done);
|
|
include(aktclass.objectoptions,oo_has_destructor);
|
|
consume(_SEMICOLON);
|
|
if not(aktprocdef.Para.empty) then
|
|
if (m_fpc in aktmodeswitches) then
|
|
Message(parser_e_no_paras_for_destructor);
|
|
{ no return value }
|
|
aktprocdef.rettype:=voidtype;
|
|
end;
|
|
|
|
var
|
|
hs : string;
|
|
pcrd : tclassrefdef;
|
|
tt : ttype;
|
|
old_object_option : tsymoptions;
|
|
oldprocinfo : tprocinfo;
|
|
oldprocsym : tprocsym;
|
|
oldprocdef : tprocdef;
|
|
oldparse_only : boolean;
|
|
storetypecanbeforward : boolean;
|
|
|
|
procedure setclassattributes;
|
|
|
|
begin
|
|
{ publishable }
|
|
if classtype in [odt_interfacecom,odt_class] then
|
|
begin
|
|
aktclass.objecttype:=classtype;
|
|
if (cs_generate_rtti in aktlocalswitches) or
|
|
(assigned(aktclass.childof) and
|
|
(oo_can_have_published in aktclass.childof.objectoptions)) then
|
|
begin
|
|
include(aktclass.objectoptions,oo_can_have_published);
|
|
{ in "publishable" classes the default access type is published }
|
|
current_object_option:=[sp_published];
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
procedure setclassparent;
|
|
|
|
begin
|
|
if assigned(fd) then
|
|
aktclass:=fd
|
|
else
|
|
aktclass:=tobjectdef.create(classtype,n,nil);
|
|
{ is the current class tobject? }
|
|
{ so you could define your own tobject }
|
|
if (cs_compilesystem in aktmoduleswitches) and (classtype=odt_class) and (upper(n)='TOBJECT') then
|
|
class_tobject:=aktclass
|
|
else if (cs_compilesystem in aktmoduleswitches) and (classtype=odt_interfacecom) and (upper(n)='IUNKNOWN') then
|
|
interface_iunknown:=aktclass
|
|
else
|
|
begin
|
|
case classtype of
|
|
odt_class:
|
|
childof:=class_tobject;
|
|
odt_interfacecom:
|
|
childof:=interface_iunknown;
|
|
end;
|
|
if (oo_is_forward in childof.objectoptions) then
|
|
Message1(parser_e_forward_declaration_must_be_resolved,childof.objrealname^);
|
|
aktclass.set_parent(childof);
|
|
end;
|
|
end;
|
|
|
|
procedure setinterfacemethodoptions;
|
|
|
|
var
|
|
i: longint;
|
|
defs: TIndexArray;
|
|
pd: tprocdef;
|
|
begin
|
|
include(aktclass.objectoptions,oo_has_virtual);
|
|
defs:=aktclass.symtable.defindex;
|
|
for i:=1 to defs.count do
|
|
begin
|
|
pd:=tprocdef(defs.search(i));
|
|
if pd.deftype=procdef then
|
|
begin
|
|
pd.extnumber:=aktclass.lastvtableindex;
|
|
inc(aktclass.lastvtableindex);
|
|
include(pd.procoptions,po_virtualmethod);
|
|
pd.forwarddef:=false;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
function readobjecttype : boolean;
|
|
|
|
begin
|
|
readobjecttype:=true;
|
|
{ distinguish classes and objects }
|
|
case token of
|
|
_OBJECT:
|
|
begin
|
|
classtype:=odt_object;
|
|
consume(_OBJECT)
|
|
end;
|
|
_CPPCLASS:
|
|
begin
|
|
classtype:=odt_cppclass;
|
|
consume(_CPPCLASS);
|
|
end;
|
|
_INTERFACE:
|
|
begin
|
|
if aktinterfacetype=it_interfacecom then
|
|
classtype:=odt_interfacecom
|
|
else {it_interfacecorba}
|
|
classtype:=odt_interfacecorba;
|
|
consume(_INTERFACE);
|
|
{ forward declaration }
|
|
if not(assigned(fd)) and (token=_SEMICOLON) then
|
|
begin
|
|
{ also anonym objects aren't allow (o : object a : longint; end;) }
|
|
if n='' then
|
|
Message(parser_f_no_anonym_objects);
|
|
aktclass:=tobjectdef.create(classtype,n,nil);
|
|
if (cs_compilesystem in aktmoduleswitches) and
|
|
(classtype=odt_interfacecom) and (upper(n)='IUNKNOWN') then
|
|
interface_iunknown:=aktclass;
|
|
include(aktclass.objectoptions,oo_is_forward);
|
|
object_dec:=aktclass;
|
|
typecanbeforward:=storetypecanbeforward;
|
|
readobjecttype:=false;
|
|
exit;
|
|
end;
|
|
end;
|
|
_CLASS:
|
|
begin
|
|
classtype:=odt_class;
|
|
consume(_CLASS);
|
|
if not(assigned(fd)) and
|
|
(token=_OF) and
|
|
{ Delphi only allows class of in type blocks.
|
|
Note that when parsing the type of a variable declaration
|
|
the blocktype is bt_type so the check for typecanbeforward
|
|
is also necessary (PFV) }
|
|
(((block_type=bt_type) and typecanbeforward) or
|
|
not(m_delphi in aktmodeswitches)) then
|
|
begin
|
|
{ a hack, but it's easy to handle }
|
|
{ class reference type }
|
|
consume(_OF);
|
|
single_type(tt,hs,typecanbeforward);
|
|
|
|
{ accept hp1, if is a forward def or a class }
|
|
if (tt.def.deftype=forwarddef) or
|
|
is_class(tt.def) then
|
|
begin
|
|
pcrd:=tclassrefdef.create(tt);
|
|
object_dec:=pcrd;
|
|
end
|
|
else
|
|
begin
|
|
object_dec:=generrortype.def;
|
|
Message1(type_e_class_type_expected,generrortype.def.typename);
|
|
end;
|
|
typecanbeforward:=storetypecanbeforward;
|
|
readobjecttype:=false;
|
|
exit;
|
|
end
|
|
{ forward class }
|
|
else if not(assigned(fd)) and (token=_SEMICOLON) then
|
|
begin
|
|
{ also anonym objects aren't allow (o : object a : longint; end;) }
|
|
if n='' then
|
|
Message(parser_f_no_anonym_objects);
|
|
aktclass:=tobjectdef.create(odt_class,n,nil);
|
|
if (cs_compilesystem in aktmoduleswitches) and (upper(n)='TOBJECT') then
|
|
class_tobject:=aktclass;
|
|
aktclass.objecttype:=odt_class;
|
|
include(aktclass.objectoptions,oo_is_forward);
|
|
{ all classes must have a vmt !! at offset zero }
|
|
if not(oo_has_vmt in aktclass.objectoptions) then
|
|
aktclass.insertvmt;
|
|
|
|
object_dec:=aktclass;
|
|
typecanbeforward:=storetypecanbeforward;
|
|
readobjecttype:=false;
|
|
exit;
|
|
end;
|
|
end;
|
|
else
|
|
begin
|
|
classtype:=odt_class; { this is error but try to recover }
|
|
consume(_OBJECT);
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
procedure handleimplementedinterface(implintf : tobjectdef);
|
|
|
|
begin
|
|
if not is_interface(implintf) then
|
|
begin
|
|
Message1(type_e_interface_type_expected,implintf.typename);
|
|
exit;
|
|
end;
|
|
if aktclass.implementedinterfaces.searchintf(implintf)<>-1 then
|
|
Message1(sym_e_duplicate_id,implintf.name)
|
|
else
|
|
aktclass.implementedinterfaces.addintf(implintf);
|
|
end;
|
|
|
|
procedure readimplementedinterfaces;
|
|
var
|
|
tt : ttype;
|
|
begin
|
|
while try_to_consume(_COMMA) do
|
|
begin
|
|
id_type(tt,pattern,false);
|
|
if (tt.def.deftype<>objectdef) then
|
|
begin
|
|
Message1(type_e_interface_type_expected,tt.def.typename);
|
|
continue;
|
|
end;
|
|
handleimplementedinterface(tobjectdef(tt.def));
|
|
end;
|
|
end;
|
|
|
|
procedure readinterfaceiid;
|
|
var
|
|
p : tnode;
|
|
begin
|
|
p:=comp_expr(true);
|
|
if p.nodetype=stringconstn then
|
|
begin
|
|
stringdispose(aktclass.iidstr);
|
|
aktclass.iidstr:=stringdup(strpas(tstringconstnode(p).value_str)); { or upper? }
|
|
p.free;
|
|
aktclass.isiidguidvalid:=string2guid(aktclass.iidstr^,aktclass.iidguid);
|
|
if (classtype=odt_interfacecom) and not aktclass.isiidguidvalid then
|
|
Message(parser_e_improper_guid_syntax);
|
|
end
|
|
else
|
|
begin
|
|
p.free;
|
|
Message(cg_e_illegal_expression);
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure readparentclasses;
|
|
var
|
|
hp : tobjectdef;
|
|
begin
|
|
hp:=nil;
|
|
{ reads the parent class }
|
|
if token=_LKLAMMER then
|
|
begin
|
|
consume(_LKLAMMER);
|
|
id_type(tt,pattern,false);
|
|
childof:=tobjectdef(tt.def);
|
|
if (not assigned(childof)) or
|
|
(childof.deftype<>objectdef) then
|
|
begin
|
|
if assigned(childof) then
|
|
Message1(type_e_class_type_expected,childof.typename);
|
|
childof:=nil;
|
|
aktclass:=tobjectdef.create(classtype,n,nil);
|
|
end
|
|
else
|
|
begin
|
|
{ a mix of class, interfaces, objects and cppclasses
|
|
isn't allowed }
|
|
case classtype of
|
|
odt_class:
|
|
if not(is_class(childof)) then
|
|
begin
|
|
if is_interface(childof) then
|
|
begin
|
|
{ we insert the interface after the child
|
|
is set, see below
|
|
}
|
|
hp:=childof;
|
|
childof:=class_tobject;
|
|
end
|
|
else
|
|
Message(parser_e_mix_of_classes_and_objects);
|
|
end;
|
|
odt_interfacecorba,
|
|
odt_interfacecom:
|
|
if not(is_interface(childof)) then
|
|
Message(parser_e_mix_of_classes_and_objects);
|
|
odt_cppclass:
|
|
if not(is_cppclass(childof)) then
|
|
Message(parser_e_mix_of_classes_and_objects);
|
|
odt_object:
|
|
if not(is_object(childof)) then
|
|
Message(parser_e_mix_of_classes_and_objects);
|
|
end;
|
|
{ the forward of the child must be resolved to get
|
|
correct field addresses }
|
|
if assigned(fd) then
|
|
begin
|
|
if (oo_is_forward in childof.objectoptions) then
|
|
Message1(parser_e_forward_declaration_must_be_resolved,childof.objrealname^);
|
|
aktclass:=fd;
|
|
{ we must inherit several options !!
|
|
this was missing !!
|
|
all is now done in set_parent
|
|
including symtable datasize setting PM }
|
|
fd.set_parent(childof);
|
|
end
|
|
else
|
|
aktclass:=tobjectdef.create(classtype,n,childof);
|
|
if aktclass.objecttype=odt_class then
|
|
begin
|
|
if assigned(hp) then
|
|
handleimplementedinterface(hp);
|
|
readimplementedinterfaces;
|
|
end;
|
|
end;
|
|
consume(_RKLAMMER);
|
|
end
|
|
{ if no parent class, then a class get tobject as parent }
|
|
else if classtype in [odt_class,odt_interfacecom] then
|
|
setclassparent
|
|
else
|
|
aktclass:=tobjectdef.create(classtype,n,nil);
|
|
{ read GUID }
|
|
if (classtype in [odt_interfacecom,odt_interfacecorba]) and
|
|
try_to_consume(_LECKKLAMMER) then
|
|
begin
|
|
readinterfaceiid;
|
|
consume(_RECKKLAMMER);
|
|
end;
|
|
end;
|
|
|
|
procedure chkcpp;
|
|
|
|
begin
|
|
if is_cppclass(aktclass) then
|
|
begin
|
|
aktprocdef.proccalloption:=pocall_cppdecl;
|
|
aktprocdef.setmangledname(
|
|
target_info.Cprefix+aktprocdef.cplusplusmangledname);
|
|
end;
|
|
end;
|
|
|
|
begin
|
|
{Nowadays aktprocsym may already have a value, so we need to save
|
|
it.}
|
|
oldprocdef:=aktprocdef;
|
|
oldprocsym:=aktprocsym;
|
|
old_object_option:=current_object_option;
|
|
|
|
{ forward is resolved }
|
|
if assigned(fd) then
|
|
exclude(fd.objectoptions,oo_is_forward);
|
|
|
|
{ objects and class types can't be declared local }
|
|
if not(symtablestack.symtabletype in [globalsymtable,staticsymtable]) then
|
|
Message(parser_e_no_local_objects);
|
|
|
|
storetypecanbeforward:=typecanbeforward;
|
|
{ for tp7 don't allow forward types }
|
|
if (m_tp7 in aktmodeswitches) then
|
|
typecanbeforward:=false;
|
|
|
|
if not(readobjecttype) then
|
|
exit;
|
|
|
|
{ also anonym objects aren't allow (o : object a : longint; end;) }
|
|
if n='' then
|
|
Message(parser_f_no_anonym_objects);
|
|
|
|
{ read list of parent classes }
|
|
readparentclasses;
|
|
|
|
{ default access is public }
|
|
there_is_a_destructor:=false;
|
|
current_object_option:=[sp_public];
|
|
|
|
{ set class flags and inherits published }
|
|
setclassattributes;
|
|
|
|
aktobjectdef:=aktclass;
|
|
aktclass.symtable.next:=symtablestack;
|
|
symtablestack:=aktclass.symtable;
|
|
testcurobject:=1;
|
|
curobjectname:=Upper(n);
|
|
|
|
{ new procinfo }
|
|
oldprocinfo:=procinfo;
|
|
procinfo:=cprocinfo.create;
|
|
procinfo._class:=aktclass;
|
|
|
|
{ short class declaration ? }
|
|
if (classtype<>odt_class) or (token<>_SEMICOLON) then
|
|
begin
|
|
{ Parse componenten }
|
|
repeat
|
|
case token of
|
|
_ID :
|
|
begin
|
|
case idtoken of
|
|
_PRIVATE :
|
|
begin
|
|
if is_interface(aktclass) then
|
|
Message(parser_e_no_access_specifier_in_interfaces);
|
|
consume(_PRIVATE);
|
|
current_object_option:=[sp_private];
|
|
include(aktclass.objectoptions,oo_has_private);
|
|
end;
|
|
_PROTECTED :
|
|
begin
|
|
if is_interface(aktclass) then
|
|
Message(parser_e_no_access_specifier_in_interfaces);
|
|
consume(_PROTECTED);
|
|
current_object_option:=[sp_protected];
|
|
include(aktclass.objectoptions,oo_has_protected);
|
|
end;
|
|
_PUBLIC :
|
|
begin
|
|
if is_interface(aktclass) then
|
|
Message(parser_e_no_access_specifier_in_interfaces);
|
|
consume(_PUBLIC);
|
|
current_object_option:=[sp_public];
|
|
end;
|
|
_PUBLISHED :
|
|
begin
|
|
{ we've to check for a pushlished section in non- }
|
|
{ publishable classes later, if a real declaration }
|
|
{ this is the way, delphi does it }
|
|
if is_interface(aktclass) then
|
|
Message(parser_e_no_access_specifier_in_interfaces);
|
|
consume(_PUBLISHED);
|
|
current_object_option:=[sp_published];
|
|
end;
|
|
else
|
|
begin
|
|
if is_interface(aktclass) then
|
|
Message(parser_e_no_vars_in_interfaces);
|
|
|
|
if (sp_published in current_object_option) and
|
|
not(oo_can_have_published in aktclass.objectoptions) then
|
|
Message(parser_e_cant_have_published);
|
|
|
|
read_var_decs(false,true,false);
|
|
end;
|
|
end;
|
|
end;
|
|
_PROPERTY :
|
|
begin
|
|
property_dec;
|
|
end;
|
|
_PROCEDURE,
|
|
_FUNCTION,
|
|
_CLASS :
|
|
begin
|
|
if (sp_published in current_object_option) and
|
|
not(oo_can_have_published in aktclass.objectoptions) then
|
|
Message(parser_e_cant_have_published);
|
|
|
|
oldparse_only:=parse_only;
|
|
parse_only:=true;
|
|
parse_proc_dec;
|
|
{ this is for error recovery as well as forward }
|
|
{ interface mappings, i.e. mapping to a method }
|
|
{ which isn't declared yet }
|
|
if assigned(aktprocsym) then
|
|
begin
|
|
parse_object_proc_directives(aktprocsym);
|
|
|
|
{ add definition to procsym }
|
|
proc_add_definition(aktprocsym,aktprocdef);
|
|
|
|
{ add procdef options to objectdef options }
|
|
if (po_msgint in aktprocdef.procoptions) then
|
|
include(aktclass.objectoptions,oo_has_msgint);
|
|
if (po_msgstr in aktprocdef.procoptions) then
|
|
include(aktclass.objectoptions,oo_has_msgstr);
|
|
if (po_virtualmethod in aktprocdef.procoptions) then
|
|
include(aktclass.objectoptions,oo_has_virtual);
|
|
|
|
chkcpp;
|
|
end;
|
|
|
|
parse_only:=oldparse_only;
|
|
end;
|
|
_CONSTRUCTOR :
|
|
begin
|
|
if (sp_published in current_object_option) and
|
|
not(oo_can_have_published in aktclass.objectoptions) then
|
|
Message(parser_e_cant_have_published);
|
|
|
|
if not(sp_public in current_object_option) then
|
|
Message(parser_w_constructor_should_be_public);
|
|
|
|
if is_interface(aktclass) then
|
|
Message(parser_e_no_con_des_in_interfaces);
|
|
|
|
oldparse_only:=parse_only;
|
|
parse_only:=true;
|
|
constructor_head;
|
|
parse_object_proc_directives(aktprocsym);
|
|
|
|
{ add definition to procsym }
|
|
proc_add_definition(aktprocsym,aktprocdef);
|
|
|
|
{ add procdef options to objectdef options }
|
|
if (po_virtualmethod in aktprocdef.procoptions) then
|
|
include(aktclass.objectoptions,oo_has_virtual);
|
|
|
|
chkcpp;
|
|
|
|
parse_only:=oldparse_only;
|
|
end;
|
|
_DESTRUCTOR :
|
|
begin
|
|
if (sp_published in current_object_option) and
|
|
not(oo_can_have_published in aktclass.objectoptions) then
|
|
Message(parser_e_cant_have_published);
|
|
|
|
if there_is_a_destructor then
|
|
Message(parser_n_only_one_destructor);
|
|
|
|
if is_interface(aktclass) then
|
|
Message(parser_e_no_con_des_in_interfaces);
|
|
|
|
if not(sp_public in current_object_option) then
|
|
Message(parser_w_destructor_should_be_public);
|
|
|
|
there_is_a_destructor:=true;
|
|
oldparse_only:=parse_only;
|
|
parse_only:=true;
|
|
destructor_head;
|
|
parse_object_proc_directives(aktprocsym);
|
|
|
|
{ add definition to procsym }
|
|
proc_add_definition(aktprocsym,aktprocdef);
|
|
|
|
{ add procdef options to objectdef options }
|
|
if (po_virtualmethod in aktprocdef.procoptions) then
|
|
include(aktclass.objectoptions,oo_has_virtual);
|
|
|
|
chkcpp;
|
|
|
|
parse_only:=oldparse_only;
|
|
end;
|
|
_END :
|
|
begin
|
|
consume(_END);
|
|
break;
|
|
end;
|
|
else
|
|
consume(_ID); { Give a ident expected message, like tp7 }
|
|
end;
|
|
until false;
|
|
end;
|
|
|
|
{ generate vmt space if needed }
|
|
if not(oo_has_vmt in aktclass.objectoptions) and
|
|
(([oo_has_virtual,oo_has_constructor,oo_has_destructor]*aktclass.objectoptions<>[]) or
|
|
(classtype in [odt_class])
|
|
) then
|
|
aktclass.insertvmt;
|
|
|
|
if is_interface(aktclass) then
|
|
setinterfacemethodoptions;
|
|
|
|
{ reset }
|
|
testcurobject:=0;
|
|
curobjectname:='';
|
|
typecanbeforward:=storetypecanbeforward;
|
|
{ restore old state }
|
|
symtablestack:=symtablestack.next;
|
|
aktobjectdef:=nil;
|
|
{Restore procinfo}
|
|
procinfo.free;
|
|
procinfo:=oldprocinfo;
|
|
{Restore the aktprocsym.}
|
|
aktprocsym:=oldprocsym;
|
|
aktprocdef:=oldprocdef;
|
|
current_object_option:=old_object_option;
|
|
|
|
object_dec:=aktclass;
|
|
end;
|
|
|
|
end.
|
|
{
|
|
$Log$
|
|
Revision 1.49 2002-08-17 09:23:38 florian
|
|
* first part of procinfo rewrite
|
|
|
|
Revision 1.48 2002/08/09 07:33:02 florian
|
|
* a couple of interface related fixes
|
|
|
|
Revision 1.47 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 1.46 2002/07/01 16:23:53 peter
|
|
* cg64 patch
|
|
* basics for currency
|
|
* asnode updates for class and interface (not finished)
|
|
|
|
Revision 1.45 2002/05/18 13:34:12 peter
|
|
* readded missing revisions
|
|
|
|
Revision 1.44 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 1.42 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 1.41 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 1.40 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
|
|
|
|
Revision 1.39 2002/04/04 19:06:00 peter
|
|
* removed unused units
|
|
* use tlocation.size in cg.a_*loc*() routines
|
|
|
|
Revision 1.38 2002/01/25 17:38:19 peter
|
|
* fixed default value for properties with index values
|
|
|
|
Revision 1.37 2002/01/24 18:25:48 peter
|
|
* implicit result variable generation for assembler routines
|
|
* removed m_tp modeswitch, use m_tp7 or not(m_fpc) instead
|
|
|
|
Revision 1.36 2002/01/06 12:08:15 peter
|
|
* removed uauto from orddef, use new range_to_basetype generating
|
|
the correct ordinal type for a range
|
|
|
|
}
|