mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-10-31 17:31:42 +01:00
1044 lines
31 KiB
ObjectPascal
1044 lines
31 KiB
ObjectPascal
{
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$Id$
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Copyright (c) 2000 by Florian Klaempfl
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Type checking and register allocation for memory related nodes
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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 nmem;
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{$i defines.inc}
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interface
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uses
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node,
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symtype,symdef,symsym,symtable,
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cpubase;
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type
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tloadvmtnode = class(tunarynode)
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constructor create(l : tnode);virtual;
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function pass_1 : tnode;override;
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function det_resulttype:tnode;override;
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end;
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thnewnode = class(tnode)
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constructor create;virtual;
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function pass_1 : tnode;override;
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function det_resulttype:tnode;override;
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end;
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tnewnode = class(tunarynode)
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constructor create(l : tnode);virtual;
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function pass_1 : tnode;override;
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function det_resulttype:tnode;override;
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end;
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thdisposenode = class(tunarynode)
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constructor create(l : tnode);virtual;
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function pass_1 : tnode;override;
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function det_resulttype:tnode;override;
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end;
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tsimplenewdisposenode = class(tunarynode)
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constructor create(n : tnodetype;l : tnode);
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function pass_1 : tnode;override;
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function det_resulttype:tnode;override;
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end;
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taddrnode = class(tunarynode)
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constructor create(l : tnode);virtual;
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function pass_1 : tnode;override;
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function det_resulttype:tnode;override;
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end;
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tdoubleaddrnode = class(tunarynode)
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constructor create(l : tnode);virtual;
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function pass_1 : tnode;override;
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function det_resulttype:tnode;override;
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end;
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tderefnode = class(tunarynode)
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constructor create(l : tnode);virtual;
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function pass_1 : tnode;override;
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function det_resulttype:tnode;override;
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end;
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tsubscriptnode = class(tunarynode)
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vs : tvarsym;
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constructor create(varsym : tsym;l : tnode);virtual;
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function getcopy : tnode;override;
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function pass_1 : tnode;override;
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function docompare(p: tnode): boolean; override;
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function det_resulttype:tnode;override;
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end;
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tvecnode = class(tbinarynode)
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constructor create(l,r : tnode);virtual;
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function pass_1 : tnode;override;
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function det_resulttype:tnode;override;
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end;
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tselfnode = class(tnode)
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classdef : tobjectdef;
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constructor create(_class : tobjectdef);virtual;
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function pass_1 : tnode;override;
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function det_resulttype:tnode;override;
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end;
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twithnode = class(tbinarynode)
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withsymtable : twithsymtable;
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tablecount : longint;
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withreference : preference;
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constructor create(symtable : twithsymtable;l,r : tnode;count : longint);virtual;
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destructor destroy;override;
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function getcopy : tnode;override;
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function pass_1 : tnode;override;
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function docompare(p: tnode): boolean; override;
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function det_resulttype:tnode;override;
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end;
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var
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cloadvmtnode : class of tloadvmtnode;
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chnewnode : class of thnewnode;
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cnewnode : class of tnewnode;
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chdisposenode : class of thdisposenode;
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csimplenewdisposenode : class of tsimplenewdisposenode;
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caddrnode : class of taddrnode;
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cdoubleaddrnode : class of tdoubleaddrnode;
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cderefnode : class of tderefnode;
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csubscriptnode : class of tsubscriptnode;
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cvecnode : class of tvecnode;
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cselfnode : class of tselfnode;
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cwithnode : class of twithnode;
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implementation
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uses
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globtype,systems,
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cutils,verbose,globals,
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symconst,symbase,types,
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htypechk,pass_1,ncal,nld,ncon,ncnv
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{$ifdef newcg}
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,cgbase
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{$else newcg}
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,hcodegen
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{$endif newcg}
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;
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{*****************************************************************************
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TLOADVMTNODE
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*****************************************************************************}
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constructor tloadvmtnode.create(l : tnode);
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begin
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inherited create(loadvmtn,l);
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end;
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function tloadvmtnode.det_resulttype:tnode;
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begin
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result:=nil;
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resulttypepass(left);
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if codegenerror then
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exit;
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resulttype.setdef(tclassrefdef.create(left.resulttype));
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end;
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function tloadvmtnode.pass_1 : tnode;
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begin
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result:=nil;
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registers32:=1;
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location.loc:=LOC_REGISTER;
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end;
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{*****************************************************************************
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THNEWNODE
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*****************************************************************************}
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constructor thnewnode.create;
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begin
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inherited create(hnewn);
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end;
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function thnewnode.det_resulttype:tnode;
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begin
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result:=nil;
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resulttype:=voidtype;
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end;
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function thnewnode.pass_1 : tnode;
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begin
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result:=nil;
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end;
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{*****************************************************************************
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TNEWNODE
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*****************************************************************************}
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constructor tnewnode.create(l : tnode);
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begin
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inherited create(newn,l);
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end;
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function tnewnode.det_resulttype:tnode;
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begin
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result:=nil;
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if assigned(left) then
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resulttypepass(left);
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resulttype:=voidtype;
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end;
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function tnewnode.pass_1 : tnode;
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begin
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result:=nil;
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if assigned(left) then
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begin
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firstpass(left);
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if codegenerror then
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exit;
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registers32:=left.registers32;
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registersfpu:=left.registersfpu;
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{$ifdef SUPPORT_MMX}
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registersmmx:=left.registersmmx;
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{$endif SUPPORT_MMX}
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location.loc:=LOC_REGISTER
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end
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else
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location.loc:=LOC_REFERENCE;
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procinfo^.flags:=procinfo^.flags or pi_do_call;
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end;
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{*****************************************************************************
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THDISPOSENODE
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*****************************************************************************}
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constructor thdisposenode.create(l : tnode);
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begin
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inherited create(hdisposen,l);
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end;
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function thdisposenode.det_resulttype:tnode;
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begin
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result:=nil;
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resulttypepass(left);
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if codegenerror then
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exit;
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resulttype:=tpointerdef(left.resulttype.def).pointertype;
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end;
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function thdisposenode.pass_1 : tnode;
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begin
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result:=nil;
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firstpass(left);
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if codegenerror then
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exit;
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registers32:=left.registers32;
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registersfpu:=left.registersfpu;
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{$ifdef SUPPORT_MMX}
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registersmmx:=left.registersmmx;
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{$endif SUPPORT_MMX}
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if registers32<1 then
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registers32:=1;
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{
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if left.location.loc<>LOC_REFERENCE then
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CGMessage(cg_e_illegal_expression);
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}
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if left.location.loc=LOC_CREGISTER then
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inc(registers32);
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location.loc:=LOC_REFERENCE;
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end;
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{*****************************************************************************
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TSIMPLENEWDISPOSENODE
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*****************************************************************************}
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constructor tsimplenewdisposenode.create(n : tnodetype;l : tnode);
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begin
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inherited create(n,l);
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end;
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function tsimplenewdisposenode.det_resulttype:tnode;
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begin
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result:=nil;
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resulttypepass(left);
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if codegenerror then
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exit;
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if (left.resulttype.def.deftype<>pointerdef) then
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CGMessage1(type_e_pointer_type_expected,left.resulttype.def.typename);
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resulttype:=voidtype;
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end;
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function tsimplenewdisposenode.pass_1 : tnode;
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begin
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result:=nil;
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{ this cannot be in a register !! }
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make_not_regable(left);
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firstpass(left);
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if codegenerror then
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exit;
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if (left.location.loc<>LOC_REFERENCE) {and
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(left.location.loc<>LOC_CREGISTER)} then
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CGMessage(cg_e_illegal_expression);
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registers32:=left.registers32;
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registersfpu:=left.registersfpu;
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{$ifdef SUPPORT_MMX}
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registersmmx:=left.registersmmx;
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{$endif SUPPORT_MMX}
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procinfo^.flags:=procinfo^.flags or pi_do_call;
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end;
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{*****************************************************************************
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TADDRNODE
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*****************************************************************************}
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constructor taddrnode.create(l : tnode);
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begin
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inherited create(addrn,l);
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end;
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function taddrnode.det_resulttype:tnode;
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var
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hp : tnode;
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hp2 : TParaItem;
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hp3 : tabstractprocdef;
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begin
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result:=nil;
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resulttypepass(left);
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if codegenerror then
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exit;
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{ don't allow constants }
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if is_constnode(left) then
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begin
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aktfilepos:=left.fileinfo;
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CGMessage(type_e_no_addr_of_constant);
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exit;
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end;
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{ tp @procvar support (type of @procvar is a void pointer)
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Note: we need to leave the addrn in the tree,
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else we can't see the difference between @procvar and procvar.
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we set the procvarload flag so a secondpass does nothing for
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this node (PFV) }
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if (m_tp_procvar in aktmodeswitches) then
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begin
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case left.nodetype of
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calln :
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begin
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{ is it a procvar? }
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hp:=tcallnode(left).right;
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if assigned(hp) then
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begin
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{ remove calln node }
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tcallnode(left).right:=nil;
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left.free;
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left:=hp;
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include(flags,nf_procvarload);
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end;
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end;
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loadn,
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subscriptn,
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typeconvn,
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vecn,
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derefn :
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begin
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if left.resulttype.def.deftype=procvardef then
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include(flags,nf_procvarload);
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end;
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end;
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if nf_procvarload in flags then
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begin
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resulttype:=voidpointertype;
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exit;
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end;
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end;
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{ proc 2 procvar ? }
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if left.nodetype=calln then
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internalerror(200103253)
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else
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if (left.nodetype=loadn) and (tloadnode(left).symtableentry.typ=procsym) then
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begin
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{ the address is already available when loading a procedure of object }
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if assigned(tloadnode(left).left) then
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include(flags,nf_procvarload);
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{ result is a procedure variable }
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{ No, to be TP compatible, you must return a voidpointer to
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the procedure that is stored in the procvar.}
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if not(m_tp_procvar in aktmodeswitches) then
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begin
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hp3:=tabstractprocdef(tprocsym(tloadnode(left).symtableentry).definition);
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{ create procvardef }
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resulttype.setdef(tprocvardef.create);
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tprocvardef(resulttype.def).proctypeoption:=hp3.proctypeoption;
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tprocvardef(resulttype.def).proccalloptions:=hp3.proccalloptions;
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tprocvardef(resulttype.def).procoptions:=hp3.procoptions;
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tprocvardef(resulttype.def).rettype:=hp3.rettype;
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tprocvardef(resulttype.def).symtablelevel:=hp3.symtablelevel;
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{ method ? then set the methodpointer flag }
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if (hp3.owner.symtabletype=objectsymtable) then
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include(tprocvardef(resulttype.def).procoptions,po_methodpointer);
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{ we need to process the parameters reverse so they are inserted
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in the correct right2left order (PFV) }
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hp2:=TParaItem(hp3.Para.last);
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while assigned(hp2) do
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begin
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tprocvardef(resulttype.def).concatpara(hp2.paratype,hp2.paratyp,hp2.defaultvalue);
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hp2:=TParaItem(hp2.previous);
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end;
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end
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else
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resulttype:=voidpointertype;
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end
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else
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begin
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{ what are we getting the address from an absolute sym? }
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hp:=left;
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while assigned(hp) and (hp.nodetype in [vecn,derefn,subscriptn]) do
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hp:=tunarynode(hp).left;
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if assigned(hp) and (hp.nodetype=loadn) and
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((tloadnode(hp).symtableentry.typ=absolutesym) and
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tabsolutesym(tloadnode(hp).symtableentry).absseg) then
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begin
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if not(cs_typed_addresses in aktlocalswitches) then
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resulttype:=voidfarpointertype
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else
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resulttype.setdef(tpointerdef.createfar(left.resulttype));
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end
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else
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begin
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if not(cs_typed_addresses in aktlocalswitches) then
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resulttype:=voidpointertype
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else
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resulttype.setdef(tpointerdef.create(left.resulttype));
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end;
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end;
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{ this is like the function addr }
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inc(parsing_para_level);
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set_varstate(left,false);
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dec(parsing_para_level);
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end;
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function taddrnode.pass_1 : tnode;
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begin
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result:=nil;
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firstpass(left);
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if codegenerror then
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exit;
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make_not_regable(left);
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if nf_procvarload in flags then
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begin
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registers32:=left.registers32;
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registersfpu:=left.registersfpu;
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{$ifdef SUPPORT_MMX}
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registersmmx:=left.registersmmx;
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{$endif SUPPORT_MMX}
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if registers32<1 then
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registers32:=1;
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location.loc:=left.location.loc;
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exit;
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end;
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{ we should allow loc_mem for @string }
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if not(left.location.loc in [LOC_MEM,LOC_REFERENCE]) then
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begin
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aktfilepos:=left.fileinfo;
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CGMessage(cg_e_illegal_expression);
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end;
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registers32:=left.registers32;
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registersfpu:=left.registersfpu;
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{$ifdef SUPPORT_MMX}
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registersmmx:=left.registersmmx;
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{$endif SUPPORT_MMX}
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if registers32<1 then
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registers32:=1;
|
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{ is this right for object of methods ?? }
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location.loc:=LOC_REGISTER;
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end;
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|
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{*****************************************************************************
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TDOUBLEADDRNODE
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*****************************************************************************}
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|
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constructor tdoubleaddrnode.create(l : tnode);
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begin
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inherited create(doubleaddrn,l);
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end;
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|
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function tdoubleaddrnode.det_resulttype:tnode;
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begin
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result:=nil;
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resulttypepass(left);
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if codegenerror then
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exit;
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inc(parsing_para_level);
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set_varstate(left,false);
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dec(parsing_para_level);
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if (left.resulttype.def.deftype)<>procvardef then
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CGMessage(cg_e_illegal_expression);
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resulttype:=voidpointertype;
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end;
|
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|
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|
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function tdoubleaddrnode.pass_1 : tnode;
|
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begin
|
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result:=nil;
|
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make_not_regable(left);
|
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firstpass(left);
|
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if codegenerror then
|
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exit;
|
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|
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if (left.location.loc<>LOC_REFERENCE) then
|
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CGMessage(cg_e_illegal_expression);
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registers32:=left.registers32;
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registersfpu:=left.registersfpu;
|
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{$ifdef SUPPORT_MMX}
|
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registersmmx:=left.registersmmx;
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{$endif SUPPORT_MMX}
|
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if registers32<1 then
|
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registers32:=1;
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location.loc:=LOC_REGISTER;
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end;
|
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|
|
|
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{*****************************************************************************
|
|
TDEREFNODE
|
|
*****************************************************************************}
|
|
|
|
constructor tderefnode.create(l : tnode);
|
|
|
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begin
|
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inherited create(derefn,l);
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|
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end;
|
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|
|
function tderefnode.det_resulttype:tnode;
|
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begin
|
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result:=nil;
|
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resulttypepass(left);
|
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set_varstate(left,true);
|
|
if codegenerror then
|
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exit;
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|
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if left.resulttype.def.deftype=pointerdef then
|
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resulttype:=tpointerdef(left.resulttype.def).pointertype
|
|
else
|
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CGMessage(cg_e_invalid_qualifier);
|
|
end;
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|
|
function tderefnode.pass_1 : tnode;
|
|
begin
|
|
result:=nil;
|
|
firstpass(left);
|
|
if codegenerror then
|
|
exit;
|
|
|
|
registers32:=max(left.registers32,1);
|
|
registersfpu:=left.registersfpu;
|
|
{$ifdef SUPPORT_MMX}
|
|
registersmmx:=left.registersmmx;
|
|
{$endif SUPPORT_MMX}
|
|
|
|
location.loc:=LOC_REFERENCE;
|
|
end;
|
|
|
|
|
|
{*****************************************************************************
|
|
TSUBSCRIPTNODE
|
|
*****************************************************************************}
|
|
|
|
constructor tsubscriptnode.create(varsym : tsym;l : tnode);
|
|
|
|
begin
|
|
inherited create(subscriptn,l);
|
|
{ vs should be changed to tsym! }
|
|
vs:=tvarsym(varsym);
|
|
end;
|
|
|
|
function tsubscriptnode.getcopy : tnode;
|
|
|
|
var
|
|
p : tsubscriptnode;
|
|
|
|
begin
|
|
p:=tsubscriptnode(inherited getcopy);
|
|
p.vs:=vs;
|
|
getcopy:=p;
|
|
end;
|
|
|
|
|
|
function tsubscriptnode.det_resulttype:tnode;
|
|
begin
|
|
result:=nil;
|
|
resulttypepass(left);
|
|
resulttype:=vs.vartype;
|
|
end;
|
|
|
|
|
|
function tsubscriptnode.pass_1 : tnode;
|
|
begin
|
|
result:=nil;
|
|
firstpass(left);
|
|
if codegenerror then
|
|
exit;
|
|
|
|
registers32:=left.registers32;
|
|
registersfpu:=left.registersfpu;
|
|
{$ifdef SUPPORT_MMX}
|
|
registersmmx:=left.registersmmx;
|
|
{$endif SUPPORT_MMX}
|
|
{ classes must be dereferenced implicit }
|
|
if is_class_or_interface(left.resulttype.def) then
|
|
begin
|
|
if registers32=0 then
|
|
registers32:=1;
|
|
location.loc:=LOC_REFERENCE;
|
|
end
|
|
else
|
|
begin
|
|
if (left.location.loc<>LOC_MEM) and
|
|
(left.location.loc<>LOC_REFERENCE) then
|
|
CGMessage(cg_e_illegal_expression);
|
|
set_location(location,left.location);
|
|
end;
|
|
end;
|
|
|
|
function tsubscriptnode.docompare(p: tnode): boolean;
|
|
begin
|
|
docompare :=
|
|
inherited docompare(p) and
|
|
(vs = tsubscriptnode(p).vs);
|
|
end;
|
|
|
|
|
|
{*****************************************************************************
|
|
TVECNODE
|
|
*****************************************************************************}
|
|
|
|
constructor tvecnode.create(l,r : tnode);
|
|
|
|
begin
|
|
inherited create(vecn,l,r);
|
|
end;
|
|
|
|
|
|
function tvecnode.det_resulttype:tnode;
|
|
var
|
|
htype : ttype;
|
|
ct : tconverttype;
|
|
begin
|
|
result:=nil;
|
|
resulttypepass(left);
|
|
resulttypepass(right);
|
|
if codegenerror then
|
|
exit;
|
|
|
|
{ range check only for arrays }
|
|
if (left.resulttype.def.deftype=arraydef) then
|
|
begin
|
|
if (isconvertable(right.resulttype.def,tarraydef(left.resulttype.def).rangetype.def,
|
|
ct,ordconstn,false)=0) and
|
|
not(is_equal(right.resulttype.def,tarraydef(left.resulttype.def).rangetype.def)) then
|
|
CGMessage(type_e_mismatch);
|
|
end;
|
|
{ Never convert a boolean or a char !}
|
|
{ maybe type conversion }
|
|
if (right.resulttype.def.deftype<>enumdef) and
|
|
not(is_char(right.resulttype.def)) and
|
|
not(is_boolean(right.resulttype.def)) then
|
|
begin
|
|
inserttypeconv(right,s32bittype);
|
|
end;
|
|
|
|
{ are we accessing a pointer[], then convert the pointer to
|
|
an array first, in FPC this is allowed for all pointers in
|
|
delphi/tp7 it's only allowed for pchars }
|
|
if (left.resulttype.def.deftype=pointerdef) and
|
|
((m_fpc in aktmodeswitches) or
|
|
is_pchar(left.resulttype.def) or
|
|
is_pwidechar(left.resulttype.def)) then
|
|
begin
|
|
{ convert pointer to array }
|
|
htype.setdef(tarraydef.create(0,$7fffffff,s32bittype));
|
|
tarraydef(htype.def).elementtype:=tpointerdef(left.resulttype.def).pointertype;
|
|
inserttypeconv(left,htype);
|
|
|
|
resulttype:=tarraydef(htype.def).elementtype;
|
|
end;
|
|
|
|
{ determine return type }
|
|
if not assigned(resulttype.def) then
|
|
if left.resulttype.def.deftype=arraydef then
|
|
resulttype:=tarraydef(left.resulttype.def).elementtype
|
|
else if left.resulttype.def.deftype=stringdef then
|
|
begin
|
|
{ indexed access to strings }
|
|
case tstringdef(left.resulttype.def).string_typ of
|
|
st_widestring :
|
|
resulttype:=cwidechartype;
|
|
st_ansistring :
|
|
resulttype:=cchartype;
|
|
st_longstring :
|
|
resulttype:=cchartype;
|
|
st_shortstring :
|
|
resulttype:=cchartype;
|
|
end;
|
|
end
|
|
else
|
|
CGMessage(type_e_array_required);
|
|
end;
|
|
|
|
|
|
function tvecnode.pass_1 : tnode;
|
|
{$ifdef consteval}
|
|
var
|
|
tcsym : ttypedconstsym;
|
|
{$endif}
|
|
begin
|
|
result:=nil;
|
|
firstpass(left);
|
|
firstpass(right);
|
|
if codegenerror then
|
|
exit;
|
|
|
|
{ the register calculation is easy if a const index is used }
|
|
if right.nodetype=ordconstn then
|
|
begin
|
|
{$ifdef consteval}
|
|
{ constant evaluation }
|
|
if (left.nodetype=loadn) and
|
|
(left.symtableentry.typ=typedconstsym) then
|
|
begin
|
|
tcsym:=ttypedconstsym(left.symtableentry);
|
|
if tcsym.defintion^.typ=stringdef then
|
|
begin
|
|
|
|
end;
|
|
end;
|
|
{$endif}
|
|
registers32:=left.registers32;
|
|
|
|
{ for ansi/wide strings, we need at least one register }
|
|
if is_ansistring(left.resulttype.def) or
|
|
is_widestring(left.resulttype.def) or
|
|
{ ... as well as for dynamic arrays }
|
|
is_dynamic_array(left.resulttype.def) then
|
|
registers32:=max(registers32,1);
|
|
end
|
|
else
|
|
begin
|
|
{ this rules are suboptimal, but they should give }
|
|
{ good results }
|
|
registers32:=max(left.registers32,right.registers32);
|
|
|
|
{ for ansi/wide strings, we need at least one register }
|
|
if is_ansistring(left.resulttype.def) or
|
|
is_widestring(left.resulttype.def) or
|
|
{ ... as well as for dynamic arrays }
|
|
is_dynamic_array(left.resulttype.def) then
|
|
registers32:=max(registers32,1);
|
|
|
|
{ need we an extra register when doing the restore ? }
|
|
if (left.registers32<=right.registers32) and
|
|
{ only if the node needs less than 3 registers }
|
|
{ two for the right node and one for the }
|
|
{ left address }
|
|
(registers32<3) then
|
|
inc(registers32);
|
|
|
|
{ need we an extra register for the index ? }
|
|
if (right.location.loc<>LOC_REGISTER)
|
|
{ only if the right node doesn't need a register }
|
|
and (right.registers32<1) then
|
|
inc(registers32);
|
|
|
|
{ not correct, but what works better ?
|
|
if left.registers32>0 then
|
|
registers32:=max(registers32,2)
|
|
else
|
|
min. one register
|
|
registers32:=max(registers32,1);
|
|
}
|
|
end;
|
|
registersfpu:=max(left.registersfpu,right.registersfpu);
|
|
{$ifdef SUPPORT_MMX}
|
|
registersmmx:=max(left.registersmmx,right.registersmmx);
|
|
{$endif SUPPORT_MMX}
|
|
if left.location.loc in [LOC_CREGISTER,LOC_REFERENCE] then
|
|
location.loc:=LOC_REFERENCE
|
|
else
|
|
location.loc:=LOC_MEM;
|
|
end;
|
|
|
|
|
|
{*****************************************************************************
|
|
TSELFNODE
|
|
*****************************************************************************}
|
|
|
|
constructor tselfnode.create(_class : tobjectdef);
|
|
|
|
begin
|
|
inherited create(selfn);
|
|
classdef:=_class;
|
|
end;
|
|
|
|
function tselfnode.det_resulttype:tnode;
|
|
begin
|
|
result:=nil;
|
|
resulttype.setdef(classdef);
|
|
end;
|
|
|
|
function tselfnode.pass_1 : tnode;
|
|
begin
|
|
result:=nil;
|
|
if (resulttype.def.deftype=classrefdef) or
|
|
is_class(resulttype.def) then
|
|
location.loc:=LOC_CREGISTER
|
|
else
|
|
location.loc:=LOC_REFERENCE;
|
|
end;
|
|
|
|
|
|
{*****************************************************************************
|
|
TWITHNODE
|
|
*****************************************************************************}
|
|
|
|
constructor twithnode.create(symtable : twithsymtable;l,r : tnode;count : longint);
|
|
|
|
begin
|
|
inherited create(withn,l,r);
|
|
withsymtable:=symtable;
|
|
tablecount:=count;
|
|
withreference:=nil;
|
|
set_file_line(l);
|
|
end;
|
|
|
|
|
|
destructor twithnode.destroy;
|
|
var
|
|
symt : tsymtable;
|
|
i : longint;
|
|
begin
|
|
symt:=withsymtable;
|
|
for i:=1 to tablecount do
|
|
begin
|
|
if assigned(symt) then
|
|
begin
|
|
withsymtable:=twithsymtable(symt.next);
|
|
symt.free;
|
|
end;
|
|
symt:=withsymtable;
|
|
end;
|
|
inherited destroy;
|
|
end;
|
|
|
|
|
|
function twithnode.getcopy : tnode;
|
|
|
|
var
|
|
p : twithnode;
|
|
|
|
begin
|
|
p:=twithnode(inherited getcopy);
|
|
p.withsymtable:=withsymtable;
|
|
p.tablecount:=tablecount;
|
|
p.withreference:=withreference;
|
|
result:=p;
|
|
end;
|
|
|
|
function twithnode.det_resulttype:tnode;
|
|
var
|
|
symtable : twithsymtable;
|
|
i : longint;
|
|
begin
|
|
result:=nil;
|
|
resulttype:=voidtype;
|
|
if assigned(left) and assigned(right) then
|
|
begin
|
|
resulttypepass(left);
|
|
unset_varstate(left);
|
|
set_varstate(left,true);
|
|
if codegenerror then
|
|
exit;
|
|
|
|
symtable:=withsymtable;
|
|
for i:=1 to tablecount do
|
|
begin
|
|
if (left.nodetype=loadn) and
|
|
(tloadnode(left).symtable=aktprocsym.definition.localst) then
|
|
symtable.direct_with:=true;
|
|
symtable.withnode:=self;
|
|
symtable:=twithsymtable(symtable.next);
|
|
end;
|
|
|
|
resulttypepass(right);
|
|
if codegenerror then
|
|
exit;
|
|
end;
|
|
resulttype:=voidtype;
|
|
end;
|
|
|
|
|
|
function twithnode.pass_1 : tnode;
|
|
begin
|
|
result:=nil;
|
|
if assigned(left) and assigned(right) then
|
|
begin
|
|
firstpass(left);
|
|
firstpass(right);
|
|
if codegenerror then
|
|
exit;
|
|
|
|
left_right_max;
|
|
end
|
|
else
|
|
begin
|
|
{ optimization }
|
|
result:=nil;
|
|
end;
|
|
end;
|
|
|
|
function twithnode.docompare(p: tnode): boolean;
|
|
begin
|
|
docompare :=
|
|
inherited docompare(p) and
|
|
(withsymtable = twithnode(p).withsymtable) and
|
|
(tablecount = twithnode(p).tablecount);
|
|
end;
|
|
|
|
begin
|
|
cloadvmtnode := tloadvmtnode;
|
|
chnewnode := thnewnode;
|
|
cnewnode := tnewnode;
|
|
chdisposenode := thdisposenode;
|
|
csimplenewdisposenode := tsimplenewdisposenode;
|
|
caddrnode := taddrnode;
|
|
cdoubleaddrnode := tdoubleaddrnode;
|
|
cderefnode := tderefnode;
|
|
csubscriptnode := tsubscriptnode;
|
|
cvecnode := tvecnode;
|
|
cselfnode := tselfnode;
|
|
cwithnode := twithnode;
|
|
end.
|
|
{
|
|
$Log$
|
|
Revision 1.18 2001-04-13 22:15:21 peter
|
|
* removed wrongly placed set_varstate in subscriptnode
|
|
|
|
Revision 1.17 2001/04/13 01:22:10 peter
|
|
* symtable change to classes
|
|
* range check generation and errors fixed, make cycle DEBUG=1 works
|
|
* memory leaks fixed
|
|
|
|
Revision 1.16 2001/04/02 21:20:31 peter
|
|
* resulttype rewrite
|
|
|
|
Revision 1.15 2001/03/23 00:16:07 florian
|
|
+ some stuff to compile FreeCLX added
|
|
|
|
Revision 1.14 2000/12/31 11:14:11 jonas
|
|
+ implemented/fixed docompare() mathods for all nodes (not tested)
|
|
+ nopt.pas, nadd.pas, i386/n386opt.pas: optimized nodes for adding strings
|
|
and constant strings/chars together
|
|
* n386add.pas: don't copy temp strings (of size 256) to another temp string
|
|
when adding
|
|
|
|
Revision 1.13 2000/12/25 00:07:26 peter
|
|
+ new tlinkedlist class (merge of old tstringqueue,tcontainer and
|
|
tlinkedlist objects)
|
|
|
|
Revision 1.12 2000/12/05 15:19:50 jonas
|
|
* fixed webbug 1268 ("merged")
|
|
|
|
Revision 1.11 2000/11/29 00:30:34 florian
|
|
* unused units removed from uses clause
|
|
* some changes for widestrings
|
|
|
|
Revision 1.10 2000/11/04 14:25:20 florian
|
|
+ merged Attila's changes for interfaces, not tested yet
|
|
|
|
Revision 1.9 2000/10/31 22:02:49 peter
|
|
* symtable splitted, no real code changes
|
|
|
|
Revision 1.8 2000/10/21 18:16:11 florian
|
|
* a lot of changes:
|
|
- basic dyn. array support
|
|
- basic C++ support
|
|
- some work for interfaces done
|
|
....
|
|
|
|
Revision 1.7 2000/10/14 21:52:55 peter
|
|
* fixed memory leaks
|
|
|
|
Revision 1.6 2000/10/14 10:14:51 peter
|
|
* moehrendorf oct 2000 rewrite
|
|
|
|
Revision 1.5 2000/10/01 19:48:24 peter
|
|
* lot of compile updates for cg11
|
|
|
|
Revision 1.4 2000/09/28 19:49:52 florian
|
|
*** empty log message ***
|
|
|
|
Revision 1.3 2000/09/25 15:37:14 florian
|
|
* more fixes
|
|
|
|
Revision 1.2 2000/09/25 15:05:25 florian
|
|
* some updates
|
|
|
|
Revision 1.1 2000/09/25 09:58:22 florian
|
|
* first revision for testing purpose
|
|
}
|