mirror of
https://gitlab.com/freepascal.org/fpc/source.git
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922 lines
26 KiB
ObjectPascal
922 lines
26 KiB
ObjectPascal
{
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$Id: ncon.pas,v 1.65 2005/02/14 17:13:06 peter Exp $
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Copyright (c) 2000-2002 by Florian Klaempfl
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Type checking and register allocation for constants
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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 ncon;
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{$i fpcdefs.inc}
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interface
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uses
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globtype,widestr,
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node,
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aasmbase,aasmtai,cpuinfo,globals,
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symconst,symtype,symdef,symsym;
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type
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trealconstnode = class(tnode)
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restype : ttype;
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value_real : bestreal;
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lab_real : tasmlabel;
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constructor create(v : bestreal;const t:ttype);virtual;
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constructor ppuload(t:tnodetype;ppufile:tcompilerppufile);override;
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procedure ppuwrite(ppufile:tcompilerppufile);override;
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procedure buildderefimpl;override;
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procedure derefimpl;override;
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function getcopy : tnode;override;
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function pass_1 : tnode;override;
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function det_resulttype:tnode;override;
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function docompare(p: tnode) : boolean; override;
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procedure printnodedata(var t:text);override;
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end;
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trealconstnodeclass = class of trealconstnode;
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tordconstnode = class(tnode)
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restype : ttype;
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value : TConstExprInt;
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rangecheck : boolean;
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{ create an ordinal constant node of the specified type and value.
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_rangecheck determines if the value of the ordinal should be checked
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against the ranges of the type definition.
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}
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constructor create(v : tconstexprint;const t:ttype; _rangecheck : boolean);virtual;
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constructor ppuload(t:tnodetype;ppufile:tcompilerppufile);override;
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procedure ppuwrite(ppufile:tcompilerppufile);override;
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procedure buildderefimpl;override;
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procedure derefimpl;override;
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function getcopy : tnode;override;
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function pass_1 : tnode;override;
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function det_resulttype:tnode;override;
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function docompare(p: tnode) : boolean; override;
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procedure printnodedata(var t:text);override;
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end;
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tordconstnodeclass = class of tordconstnode;
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tpointerconstnode = class(tnode)
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restype : ttype;
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value : TConstPtrUInt;
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constructor create(v : TConstPtrUInt;const t:ttype);virtual;
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constructor ppuload(t:tnodetype;ppufile:tcompilerppufile);override;
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procedure ppuwrite(ppufile:tcompilerppufile);override;
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procedure buildderefimpl;override;
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procedure derefimpl;override;
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function getcopy : tnode;override;
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function pass_1 : tnode;override;
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function det_resulttype:tnode;override;
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function docompare(p: tnode) : boolean; override;
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end;
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tpointerconstnodeclass = class of tpointerconstnode;
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tstringconstnode = class(tnode)
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value_str : pchar;
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len : longint;
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lab_str : tasmlabel;
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st_type : tstringtype;
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constructor createstr(const s : string;st:tstringtype);virtual;
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constructor createpchar(s : pchar;l : longint);virtual;
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constructor createwstr(w : pcompilerwidestring);virtual;
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constructor ppuload(t:tnodetype;ppufile:tcompilerppufile);override;
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procedure ppuwrite(ppufile:tcompilerppufile);override;
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procedure buildderefimpl;override;
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procedure derefimpl;override;
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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 det_resulttype:tnode;override;
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function getpcharcopy : pchar;
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function docompare(p: tnode) : boolean; override;
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end;
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tstringconstnodeclass = class of tstringconstnode;
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tsetconstnode = class(tunarynode)
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restype : ttype;
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value_set : pconstset;
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lab_set : tasmlabel;
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constructor create(s : pconstset;const t:ttype);virtual;
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destructor destroy;override;
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constructor ppuload(t:tnodetype;ppufile:tcompilerppufile);override;
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procedure ppuwrite(ppufile:tcompilerppufile);override;
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procedure buildderefimpl;override;
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procedure derefimpl;override;
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function getcopy : tnode;override;
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function pass_1 : tnode;override;
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function det_resulttype:tnode;override;
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function docompare(p: tnode) : boolean; override;
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end;
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tsetconstnodeclass = class of tsetconstnode;
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tnilnode = 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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tnilnodeclass = class of tnilnode;
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tguidconstnode = class(tnode)
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value : tguid;
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constructor create(const g:tguid);virtual;
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constructor ppuload(t:tnodetype;ppufile:tcompilerppufile);override;
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procedure ppuwrite(ppufile:tcompilerppufile);override;
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function getcopy : tnode;override;
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function pass_1 : tnode;override;
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function det_resulttype:tnode;override;
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function docompare(p: tnode) : boolean; override;
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end;
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tguidconstnodeclass = class of tguidconstnode;
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var
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crealconstnode : trealconstnodeclass;
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cordconstnode : tordconstnodeclass;
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cpointerconstnode : tpointerconstnodeclass;
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cstringconstnode : tstringconstnodeclass;
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csetconstnode : tsetconstnodeclass;
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cguidconstnode : tguidconstnodeclass;
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cnilnode : tnilnodeclass;
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function genintconstnode(v : TConstExprInt) : tordconstnode;
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function genenumnode(v : tenumsym) : tordconstnode;
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{ some helper routines }
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{$ifdef INT64FUNCRESOK}
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function get_ordinal_value(p : tnode) : TConstExprInt;
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{$else INT64FUNCRESOK}
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function get_ordinal_value(p : tnode) : longint;
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{$endif INT64FUNCRESOK}
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function is_constresourcestringnode(p : tnode) : boolean;
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function str_length(p : tnode) : longint;
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function is_emptyset(p : tnode):boolean;
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function genconstsymtree(p : tconstsym) : tnode;
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implementation
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uses
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cutils,
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verbose,systems,
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defutil,
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cpubase,cgbase,
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nld;
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function genintconstnode(v : TConstExprInt) : tordconstnode;
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var
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htype : ttype;
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begin
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int_to_type(v,htype);
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genintconstnode:=cordconstnode.create(v,htype,true);
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end;
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function genenumnode(v : tenumsym) : tordconstnode;
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var
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htype : ttype;
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begin
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htype.setdef(v.definition);
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genenumnode:=cordconstnode.create(v.value,htype,true);
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end;
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{$ifdef INT64FUNCRESOK}
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function get_ordinal_value(p : tnode) : TConstExprInt;
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{$else INT64FUNCRESOK}
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function get_ordinal_value(p : tnode) : longint;
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{$endif INT64FUNCRESOK}
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begin
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get_ordinal_value:=0;
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if is_constnode(p) then
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begin
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if p.nodetype=ordconstn then
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get_ordinal_value:=tordconstnode(p).value
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else
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Message(type_e_ordinal_expr_expected);
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end
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else
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Message(type_e_constant_expr_expected);
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end;
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function is_constresourcestringnode(p : tnode) : boolean;
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begin
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is_constresourcestringnode:=(p.nodetype=loadn) and
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(tloadnode(p).symtableentry.typ=constsym) and
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(tconstsym(tloadnode(p).symtableentry).consttyp=constresourcestring);
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end;
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function str_length(p : tnode) : longint;
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begin
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str_length:=tstringconstnode(p).len;
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end;
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function is_emptyset(p : tnode):boolean;
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begin
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is_emptyset:=(p.nodetype=setconstn) and
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(Tsetconstnode(p).value_set^=[]);
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end;
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function genconstsymtree(p : tconstsym) : tnode;
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var
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p1 : tnode;
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len : longint;
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pc : pchar;
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begin
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p1:=nil;
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case p.consttyp of
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constord :
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p1:=cordconstnode.create(p.value.valueord,p.consttype,true);
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conststring :
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begin
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len:=p.value.len;
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if not(cs_ansistrings in aktlocalswitches) and (len>255) then
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len:=255;
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getmem(pc,len+1);
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move(pchar(p.value.valueptr)^,pc^,len);
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pc[len]:=#0;
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p1:=cstringconstnode.createpchar(pc,len);
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end;
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constreal :
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p1:=crealconstnode.create(pbestreal(p.value.valueptr)^,pbestrealtype^);
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constset :
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p1:=csetconstnode.create(pconstset(p.value.valueptr),p.consttype);
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constpointer :
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p1:=cpointerconstnode.create(p.value.valueordptr,p.consttype);
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constnil :
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p1:=cnilnode.create;
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else
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internalerror(200205103);
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end;
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genconstsymtree:=p1;
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end;
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{*****************************************************************************
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TREALCONSTNODE
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*****************************************************************************}
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{ generic code }
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{ overridden by: }
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{ i386 }
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constructor trealconstnode.create(v : bestreal;const t:ttype);
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begin
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inherited create(realconstn);
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restype:=t;
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value_real:=v;
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lab_real:=nil;
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end;
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constructor trealconstnode.ppuload(t:tnodetype;ppufile:tcompilerppufile);
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begin
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inherited ppuload(t,ppufile);
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ppufile.gettype(restype);
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value_real:=ppufile.getreal;
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lab_real:=tasmlabel(ppufile.getasmsymbol);
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end;
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procedure trealconstnode.ppuwrite(ppufile:tcompilerppufile);
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begin
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inherited ppuwrite(ppufile);
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ppufile.puttype(restype);
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ppufile.putreal(value_real);
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ppufile.putasmsymbol(lab_real);
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end;
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procedure trealconstnode.buildderefimpl;
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begin
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inherited buildderefimpl;
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restype.buildderef;
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end;
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procedure trealconstnode.derefimpl;
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begin
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inherited derefimpl;
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restype.resolve;
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objectlibrary.derefasmsymbol(tasmsymbol(lab_real));
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end;
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function trealconstnode.getcopy : tnode;
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var
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n : trealconstnode;
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begin
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n:=trealconstnode(inherited getcopy);
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n.value_real:=value_real;
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n.lab_real:=lab_real;
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getcopy:=n;
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end;
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function trealconstnode.det_resulttype:tnode;
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begin
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result:=nil;
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resulttype:=restype;
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end;
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function trealconstnode.pass_1 : tnode;
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begin
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result:=nil;
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expectloc:=LOC_CREFERENCE;
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{ needs to be loaded into an FPU register }
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registersfpu:=1;
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end;
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function trealconstnode.docompare(p: tnode): boolean;
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begin
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docompare :=
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inherited docompare(p) and
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(value_real = trealconstnode(p).value_real) and
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{ floating point compares for non-numbers give strange results usually }
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is_number_float(value_real) and
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is_number_float(trealconstnode(p).value_real);
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end;
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procedure Trealconstnode.printnodedata(var t:text);
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begin
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inherited printnodedata(t);
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writeln(t,printnodeindention,'value = ',value_real);
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end;
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{*****************************************************************************
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TORDCONSTNODE
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*****************************************************************************}
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constructor tordconstnode.create(v : tconstexprint;const t:ttype;_rangecheck : boolean);
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begin
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inherited create(ordconstn);
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value:=v;
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restype:=t;
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rangecheck := _rangecheck;
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end;
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constructor tordconstnode.ppuload(t:tnodetype;ppufile:tcompilerppufile);
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begin
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inherited ppuload(t,ppufile);
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ppufile.gettype(restype);
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value:=ppufile.getexprint;
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{ normally, the value is already compiled, so we don't need
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to do once again a range check
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}
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rangecheck := false;
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end;
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procedure tordconstnode.ppuwrite(ppufile:tcompilerppufile);
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begin
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inherited ppuwrite(ppufile);
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ppufile.puttype(restype);
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ppufile.putexprint(value);
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end;
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procedure tordconstnode.buildderefimpl;
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begin
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inherited buildderefimpl;
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restype.buildderef;
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end;
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procedure tordconstnode.derefimpl;
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begin
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inherited derefimpl;
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restype.resolve;
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end;
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function tordconstnode.getcopy : tnode;
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var
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n : tordconstnode;
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begin
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n:=tordconstnode(inherited getcopy);
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n.value:=value;
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n.restype := restype;
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getcopy:=n;
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end;
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function tordconstnode.det_resulttype:tnode;
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begin
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result:=nil;
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resulttype:=restype;
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{ only do range checking when explicitly asked for it }
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if rangecheck then
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testrange(resulttype.def,value,false);
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end;
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function tordconstnode.pass_1 : tnode;
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begin
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result:=nil;
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expectloc:=LOC_CONSTANT;
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end;
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function tordconstnode.docompare(p: tnode): boolean;
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begin
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docompare :=
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inherited docompare(p) and
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(value = tordconstnode(p).value);
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end;
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procedure Tordconstnode.printnodedata(var t:text);
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begin
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inherited printnodedata(t);
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writeln(t,printnodeindention,'value = ',value);
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end;
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{*****************************************************************************
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TPOINTERCONSTNODE
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*****************************************************************************}
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constructor tpointerconstnode.create(v : TConstPtrUInt;const t:ttype);
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begin
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inherited create(pointerconstn);
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value:=v;
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restype:=t;
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end;
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constructor tpointerconstnode.ppuload(t:tnodetype;ppufile:tcompilerppufile);
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begin
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inherited ppuload(t,ppufile);
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ppufile.gettype(restype);
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value:=ppufile.getptruint;
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end;
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procedure tpointerconstnode.ppuwrite(ppufile:tcompilerppufile);
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begin
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inherited ppuwrite(ppufile);
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ppufile.puttype(restype);
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ppufile.putptruint(value);
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end;
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procedure tpointerconstnode.buildderefimpl;
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begin
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inherited buildderefimpl;
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restype.buildderef;
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end;
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procedure tpointerconstnode.derefimpl;
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begin
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inherited derefimpl;
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restype.resolve;
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end;
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function tpointerconstnode.getcopy : tnode;
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var
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n : tpointerconstnode;
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begin
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n:=tpointerconstnode(inherited getcopy);
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n.value:=value;
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n.restype := restype;
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getcopy:=n;
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end;
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function tpointerconstnode.det_resulttype:tnode;
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begin
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result:=nil;
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resulttype:=restype;
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end;
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function tpointerconstnode.pass_1 : tnode;
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begin
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result:=nil;
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expectloc:=LOC_CONSTANT;
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end;
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function tpointerconstnode.docompare(p: tnode): boolean;
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begin
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docompare :=
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inherited docompare(p) and
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(value = tpointerconstnode(p).value);
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end;
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{*****************************************************************************
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TSTRINGCONSTNODE
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*****************************************************************************}
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constructor tstringconstnode.createstr(const s : string;st:tstringtype);
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var
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l : longint;
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begin
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inherited create(stringconstn);
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l:=length(s);
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len:=l;
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{ stringdup write even past a #0 }
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getmem(value_str,l+1);
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move(s[1],value_str^,l);
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value_str[l]:=#0;
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lab_str:=nil;
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if st=st_default then
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begin
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if cs_ansistrings in aktlocalswitches then
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{$ifdef ansistring_bits}
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case aktansistring_bits of
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sb_16:
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st_type:=st_ansistring16;
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sb_32:
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st_type:=st_ansistring32;
|
|
sb_64:
|
|
st_type:=st_ansistring64;
|
|
end
|
|
{$else}
|
|
st_type:=st_ansistring
|
|
{$endif}
|
|
else
|
|
st_type:=st_shortstring;
|
|
end
|
|
else
|
|
st_type:=st;
|
|
end;
|
|
|
|
constructor tstringconstnode.createwstr(w : pcompilerwidestring);
|
|
|
|
begin
|
|
inherited create(stringconstn);
|
|
len:=getlengthwidestring(w);
|
|
initwidestring(pcompilerwidestring(value_str));
|
|
copywidestring(w,pcompilerwidestring(value_str));
|
|
lab_str:=nil;
|
|
st_type:=st_widestring;
|
|
end;
|
|
|
|
constructor tstringconstnode.createpchar(s : pchar;l : longint);
|
|
|
|
begin
|
|
inherited create(stringconstn);
|
|
len:=l;
|
|
value_str:=s;
|
|
if (cs_ansistrings in aktlocalswitches) or
|
|
(len>255) then
|
|
{$ifdef ansistring_bits}
|
|
case aktansistring_bits of
|
|
sb_16:
|
|
st_type:=st_ansistring16;
|
|
sb_32:
|
|
st_type:=st_ansistring32;
|
|
sb_64:
|
|
st_type:=st_ansistring64;
|
|
end
|
|
{$else}
|
|
st_type:=st_ansistring
|
|
{$endif}
|
|
else
|
|
st_type:=st_shortstring;
|
|
lab_str:=nil;
|
|
end;
|
|
|
|
|
|
destructor tstringconstnode.destroy;
|
|
begin
|
|
if st_type=st_widestring then
|
|
donewidestring(pcompilerwidestring(value_str))
|
|
else
|
|
ansistringdispose(value_str,len);
|
|
inherited destroy;
|
|
end;
|
|
|
|
|
|
constructor tstringconstnode.ppuload(t:tnodetype;ppufile:tcompilerppufile);
|
|
begin
|
|
inherited ppuload(t,ppufile);
|
|
st_type:=tstringtype(ppufile.getbyte);
|
|
len:=ppufile.getlongint;
|
|
getmem(value_str,len+1);
|
|
ppufile.getdata(value_str^,len);
|
|
value_str[len]:=#0;
|
|
lab_str:=tasmlabel(ppufile.getasmsymbol);
|
|
end;
|
|
|
|
|
|
procedure tstringconstnode.ppuwrite(ppufile:tcompilerppufile);
|
|
begin
|
|
inherited ppuwrite(ppufile);
|
|
ppufile.putbyte(byte(st_type));
|
|
ppufile.putlongint(len);
|
|
ppufile.putdata(value_str^,len);
|
|
ppufile.putasmsymbol(lab_str);
|
|
end;
|
|
|
|
|
|
procedure tstringconstnode.buildderefimpl;
|
|
begin
|
|
inherited buildderefimpl;
|
|
end;
|
|
|
|
|
|
procedure tstringconstnode.derefimpl;
|
|
begin
|
|
inherited derefimpl;
|
|
objectlibrary.derefasmsymbol(tasmsymbol(lab_str));
|
|
end;
|
|
|
|
|
|
function tstringconstnode.getcopy : tnode;
|
|
|
|
var
|
|
n : tstringconstnode;
|
|
|
|
begin
|
|
n:=tstringconstnode(inherited getcopy);
|
|
n.st_type:=st_type;
|
|
n.len:=len;
|
|
n.lab_str:=lab_str;
|
|
if st_type=st_widestring then
|
|
begin
|
|
initwidestring(pcompilerwidestring(n.value_str));
|
|
copywidestring(pcompilerwidestring(value_str),pcompilerwidestring(n.value_str));
|
|
end
|
|
else
|
|
n.value_str:=getpcharcopy;
|
|
getcopy:=n;
|
|
end;
|
|
|
|
function tstringconstnode.det_resulttype:tnode;
|
|
begin
|
|
result:=nil;
|
|
case st_type of
|
|
st_shortstring :
|
|
resulttype:=cshortstringtype;
|
|
{$ifdef ansistring_bits}
|
|
st_ansistring16:
|
|
resulttype:=cansistringtype16;
|
|
st_ansistring32:
|
|
resulttype:=cansistringtype32;
|
|
st_ansistring64:
|
|
resulttype:=cansistringtype64;
|
|
{$else}
|
|
st_ansistring :
|
|
resulttype:=cansistringtype;
|
|
{$endif}
|
|
st_widestring :
|
|
resulttype:=cwidestringtype;
|
|
st_longstring :
|
|
resulttype:=clongstringtype;
|
|
end;
|
|
end;
|
|
|
|
function tstringconstnode.pass_1 : tnode;
|
|
begin
|
|
result:=nil;
|
|
{$ifdef ansistring_bits}
|
|
if (st_type in [st_ansistring16,st_ansistring32,st_ansistring64,st_widestring]) and
|
|
{$else}
|
|
if (st_type in [st_ansistring,st_widestring]) and
|
|
{$endif}
|
|
(len=0) then
|
|
expectloc:=LOC_CONSTANT
|
|
else
|
|
expectloc:=LOC_CREFERENCE;
|
|
end;
|
|
|
|
function tstringconstnode.getpcharcopy : pchar;
|
|
var
|
|
pc : pchar;
|
|
begin
|
|
pc:=nil;
|
|
getmem(pc,len+1);
|
|
if pc=nil then
|
|
Message(general_f_no_memory_left);
|
|
move(value_str^,pc^,len+1);
|
|
getpcharcopy:=pc;
|
|
end;
|
|
|
|
function tstringconstnode.docompare(p: tnode): boolean;
|
|
begin
|
|
docompare :=
|
|
inherited docompare(p) and
|
|
(len = tstringconstnode(p).len) and
|
|
{ Don't compare the pchars, since they may contain null chars }
|
|
{ Since all equal constant strings are replaced by the same }
|
|
{ label, the following compare should be enough (JM) }
|
|
(lab_str = tstringconstnode(p).lab_str);
|
|
end;
|
|
|
|
{*****************************************************************************
|
|
TSETCONSTNODE
|
|
*****************************************************************************}
|
|
|
|
constructor tsetconstnode.create(s : pconstset;const t:ttype);
|
|
|
|
begin
|
|
inherited create(setconstn,nil);
|
|
restype:=t;
|
|
if assigned(s) then
|
|
begin
|
|
new(value_set);
|
|
value_set^:=s^;
|
|
end
|
|
else
|
|
value_set:=nil;
|
|
end;
|
|
|
|
destructor tsetconstnode.destroy;
|
|
begin
|
|
if assigned(value_set) then
|
|
dispose(value_set);
|
|
inherited destroy;
|
|
end;
|
|
|
|
|
|
constructor tsetconstnode.ppuload(t:tnodetype;ppufile:tcompilerppufile);
|
|
begin
|
|
inherited ppuload(t,ppufile);
|
|
ppufile.gettype(restype);
|
|
new(value_set);
|
|
ppufile.getdata(value_set^,sizeof(tconstset));
|
|
end;
|
|
|
|
|
|
procedure tsetconstnode.ppuwrite(ppufile:tcompilerppufile);
|
|
begin
|
|
inherited ppuwrite(ppufile);
|
|
ppufile.puttype(restype);
|
|
ppufile.putdata(value_set^,sizeof(tconstset));
|
|
end;
|
|
|
|
|
|
procedure tsetconstnode.buildderefimpl;
|
|
begin
|
|
inherited buildderefimpl;
|
|
restype.buildderef;
|
|
end;
|
|
|
|
|
|
procedure tsetconstnode.derefimpl;
|
|
begin
|
|
inherited derefimpl;
|
|
restype.resolve;
|
|
end;
|
|
|
|
|
|
function tsetconstnode.getcopy : tnode;
|
|
|
|
var
|
|
n : tsetconstnode;
|
|
|
|
begin
|
|
n:=tsetconstnode(inherited getcopy);
|
|
if assigned(value_set) then
|
|
begin
|
|
new(n.value_set);
|
|
n.value_set^:=value_set^
|
|
end
|
|
else
|
|
n.value_set:=nil;
|
|
n.restype := restype;
|
|
n.lab_set:=lab_set;
|
|
getcopy:=n;
|
|
end;
|
|
|
|
function tsetconstnode.det_resulttype:tnode;
|
|
begin
|
|
result:=nil;
|
|
resulttype:=restype;
|
|
end;
|
|
|
|
function tsetconstnode.pass_1 : tnode;
|
|
begin
|
|
result:=nil;
|
|
if tsetdef(resulttype.def).settype=smallset then
|
|
expectloc:=LOC_CONSTANT
|
|
else
|
|
expectloc:=LOC_CREFERENCE;
|
|
end;
|
|
|
|
|
|
function tsetconstnode.docompare(p: tnode): boolean;
|
|
begin
|
|
docompare:=(inherited docompare(p)) and
|
|
(value_set^=Tsetconstnode(p).value_set^);
|
|
end;
|
|
|
|
|
|
{*****************************************************************************
|
|
TNILNODE
|
|
*****************************************************************************}
|
|
|
|
constructor tnilnode.create;
|
|
|
|
begin
|
|
inherited create(niln);
|
|
end;
|
|
|
|
function tnilnode.det_resulttype:tnode;
|
|
begin
|
|
result:=nil;
|
|
resulttype:=voidpointertype;
|
|
end;
|
|
|
|
function tnilnode.pass_1 : tnode;
|
|
begin
|
|
result:=nil;
|
|
expectloc:=LOC_CONSTANT;
|
|
end;
|
|
|
|
{*****************************************************************************
|
|
TGUIDCONSTNODE
|
|
*****************************************************************************}
|
|
|
|
constructor tguidconstnode.create(const g:tguid);
|
|
|
|
begin
|
|
inherited create(guidconstn);
|
|
value:=g;
|
|
end;
|
|
|
|
constructor tguidconstnode.ppuload(t:tnodetype;ppufile:tcompilerppufile);
|
|
begin
|
|
inherited ppuload(t,ppufile);
|
|
ppufile.getguid(value);
|
|
end;
|
|
|
|
|
|
procedure tguidconstnode.ppuwrite(ppufile:tcompilerppufile);
|
|
begin
|
|
inherited ppuwrite(ppufile);
|
|
ppufile.putguid(value);
|
|
end;
|
|
|
|
|
|
function tguidconstnode.getcopy : tnode;
|
|
|
|
var
|
|
n : tguidconstnode;
|
|
|
|
begin
|
|
n:=tguidconstnode(inherited getcopy);
|
|
n.value:=value;
|
|
getcopy:=n;
|
|
end;
|
|
|
|
function tguidconstnode.det_resulttype:tnode;
|
|
begin
|
|
result:=nil;
|
|
resulttype.setdef(rec_tguid);
|
|
end;
|
|
|
|
function tguidconstnode.pass_1 : tnode;
|
|
begin
|
|
result:=nil;
|
|
expectloc:=LOC_CREFERENCE;
|
|
end;
|
|
|
|
function tguidconstnode.docompare(p: tnode): boolean;
|
|
begin
|
|
docompare :=
|
|
inherited docompare(p) and
|
|
(guid2string(value) = guid2string(tguidconstnode(p).value));
|
|
end;
|
|
|
|
|
|
begin
|
|
crealconstnode:=trealconstnode;
|
|
cordconstnode:=tordconstnode;
|
|
cpointerconstnode:=tpointerconstnode;
|
|
cstringconstnode:=tstringconstnode;
|
|
csetconstnode:=tsetconstnode;
|
|
cnilnode:=tnilnode;
|
|
cguidconstnode:=tguidconstnode;
|
|
end.
|
|
{
|
|
$Log: ncon.pas,v $
|
|
Revision 1.65 2005/02/14 17:13:06 peter
|
|
* truncate log
|
|
|
|
}
|