mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-11-04 05:59:37 +01:00
238964e443
- fixes in asmreader, basic stuff works again, the rest is untested - removed lot of unnecessary ungetcpuregister()s - various other fixes i forgot + basic amigaos syscalls support. still lacks explicit funcretloc git-svn-id: trunk@1943 -
2626 lines
103 KiB
ObjectPascal
2626 lines
103 KiB
ObjectPascal
{
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This file implements the node for sub procedure calling.
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Copyright (c) 1998-2002 by Florian Klaempfl
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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 ncal;
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{$i fpcdefs.inc}
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interface
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uses
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cutils,cclasses,
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globtype,
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paramgr,parabase,
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node,nbas,nutils,
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{$ifdef state_tracking}
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nstate,
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{$endif state_tracking}
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symbase,symtype,symsym,symdef,symtable;
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type
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tcallnodeflag = (
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cnf_restypeset,
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cnf_return_value_used,
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cnf_inherited,
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cnf_anon_inherited,
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cnf_new_call,
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cnf_dispose_call,
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cnf_member_call, { called with implicit methodpointer tree }
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cnf_uses_varargs { varargs are used in the declaration }
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);
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tcallnodeflags = set of tcallnodeflag;
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tcallnode = class(tbinarynode)
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private
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{ info for inlining }
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inlinelocals: TList;
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{ number of parameters passed from the source, this does not include the hidden parameters }
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paralength : smallint;
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function gen_self_tree_methodpointer:tnode;
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function gen_self_tree:tnode;
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function gen_vmt_tree:tnode;
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procedure bind_parasym;
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{ function return node, this is used to pass the data for a
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ret_in_param return value }
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_funcretnode : tnode;
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procedure setfuncretnode(const returnnode: tnode);
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procedure convert_carg_array_of_const;
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procedure order_parameters;
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procedure createinlineparas(var createstatement, deletestatement: tstatementnode);
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function replaceparaload(var n: tnode; arg: pointer): foreachnoderesult;
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procedure createlocaltemps(p:TNamedIndexItem;arg:pointer);
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function pass1_inline:tnode;
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protected
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pushedparasize : longint;
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public
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{ the symbol containing the definition of the procedure }
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{ to call }
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symtableprocentry : tprocsym;
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symtableprocentryderef : tderef;
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{ symtable where the entry was found, needed for with support }
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symtableproc : tsymtable;
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{ the definition of the procedure to call }
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procdefinition : tabstractprocdef;
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procdefinitionderef : tderef;
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{ tree that contains the pointer to the object for this method }
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methodpointerinit,
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methodpointerdone : tblocknode;
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methodpointer : tnode;
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{ varargs parasyms }
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varargsparas : tvarargsparalist;
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{ node that specifies where the result should be put for calls }
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{ that return their result in a parameter }
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property funcretnode: tnode read _funcretnode write setfuncretnode;
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{ separately specified resulttype for some compilerprocs (e.g. }
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{ you can't have a function with an "array of char" resulttype }
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{ the RTL) (JM) }
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restype: ttype;
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callnodeflags : tcallnodeflags;
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{ only the processor specific nodes need to override this }
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{ constructor }
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constructor create(l:tnode; v : tprocsym;st : tsymtable; mp: tnode; callflags:tcallnodeflags);virtual;
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constructor create_procvar(l,r:tnode);
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constructor createintern(const name: string; params: tnode);
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constructor createinternres(const name: string; params: tnode; const res: ttype);
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constructor createinternreturn(const name: string; params: tnode; returnnode : tnode);
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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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{ Goes through all symbols in a class and subclasses and calls
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verify abstract for each .
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}
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procedure verifyabstractcalls;
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{ called for each definition in a class and verifies if a method
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is abstract or not, if it is abstract, give out a warning
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}
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procedure verifyabstract(p : tnamedindexitem;arg:pointer);
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procedure insertintolist(l : tnodelist);override;
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function pass_1 : tnode;override;
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function det_resulttype:tnode;override;
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{$ifdef state_tracking}
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function track_state_pass(exec_known:boolean):boolean;override;
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{$endif state_tracking}
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function docompare(p: tnode): boolean; override;
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procedure printnodedata(var t:text);override;
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function para_count:longint;
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function get_load_methodpointer:tnode;
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private
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AbstractMethodsList : TStringList;
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end;
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tcallnodeclass = class of tcallnode;
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tcallparaflag = (
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cpf_is_colon_para,
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cpf_varargs_para { belongs this para to varargs }
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);
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tcallparaflags = set of tcallparaflag;
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tcallparanode = class(tbinarynode)
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public
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callparaflags : tcallparaflags;
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parasym : tparavarsym;
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used_by_callnode : boolean;
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{ only the processor specific nodes need to override this }
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{ constructor }
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constructor create(expr,next : tnode);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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function _getcopy : tnode;override;
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procedure insertintolist(l : tnodelist);override;
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procedure get_paratype;
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procedure insert_typeconv(do_count : boolean);
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procedure det_registers;
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procedure firstcallparan;
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procedure secondcallparan;virtual;abstract;
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function docompare(p: tnode): boolean; override;
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procedure printnodetree(var t:text);override;
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end;
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tcallparanodeclass = class of tcallparanode;
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function reverseparameters(p: tcallparanode): tcallparanode;
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var
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ccallnode : tcallnodeclass;
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ccallparanode : tcallparanodeclass;
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{ Current callnode, this is needed for having a link
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between the callparanodes and the callnode they belong to }
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aktcallnode : tcallnode;
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implementation
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uses
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systems,
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verbose,globals,
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symconst,defutil,defcmp,
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htypechk,pass_1,
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ncnv,nld,ninl,nadd,ncon,nmem,
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procinfo,
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cgbase
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;
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type
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tobjectinfoitem = class(tlinkedlistitem)
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objinfo : tobjectdef;
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constructor create(def : tobjectdef);
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end;
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{****************************************************************************
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HELPERS
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****************************************************************************}
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function reverseparameters(p: tcallparanode): tcallparanode;
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var
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hp1, hp2: tcallparanode;
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begin
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hp1:=nil;
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while assigned(p) do
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begin
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{ pull out }
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hp2:=p;
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p:=tcallparanode(p.right);
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{ pull in }
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hp2.right:=hp1;
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hp1:=hp2;
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end;
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reverseparameters:=hp1;
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end;
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procedure maybe_load_para_in_temp(var p:tnode);
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function is_simple_node(hp:tnode):boolean;
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begin
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is_simple_node:=(hp.nodetype in [typen,loadvmtaddrn,loadn,arrayconstructorn]);
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end;
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var
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hp,
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loadp,
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refp : tnode;
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htype : ttype;
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ptemp : ttempcreatenode;
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usederef : boolean;
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newinitstatement,
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newdonestatement : tstatementnode;
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begin
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if not assigned(aktcallnode) then
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internalerror(200410121);
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{ Load all complex loads into a temp to prevent
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double calls to a function. We can't simply check for a hp.nodetype=calln
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}
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hp:=p;
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while assigned(hp) and
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(hp.nodetype=typeconvn) and
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(ttypeconvnode(hp).convtype=tc_equal) do
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hp:=tunarynode(hp).left;
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if assigned(hp) and
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not is_simple_node(hp) then
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begin
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if not assigned(aktcallnode.methodpointerinit) then
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begin
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aktcallnode.methodpointerinit:=internalstatements(newinitstatement);
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aktcallnode.methodpointerdone:=internalstatements(newdonestatement);
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end
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else
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begin
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newinitstatement:=laststatement(aktcallnode.methodpointerinit);
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newdonestatement:=laststatement(aktcallnode.methodpointerdone);
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end;
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{ temp create }
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usederef:=(p.resulttype.def.deftype in [arraydef,recorddef]) or
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is_shortstring(p.resulttype.def) or
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is_object(p.resulttype.def);
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if usederef then
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htype.setdef(tpointerdef.create(p.resulttype))
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else
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htype:=p.resulttype;
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ptemp:=ctempcreatenode.create(htype,htype.def.size,tt_persistent,true);
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if usederef then
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begin
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loadp:=caddrnode.create_internal(p);
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refp:=cderefnode.create(ctemprefnode.create(ptemp));
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end
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else
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begin
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loadp:=p;
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refp:=ctemprefnode.create(ptemp);
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end;
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addstatement(newinitstatement,ptemp);
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addstatement(newinitstatement,cassignmentnode.create(
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ctemprefnode.create(ptemp),
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loadp));
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{ new tree is only a temp reference }
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p:=refp;
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{ temp release. We need to return a reference to the methodpointer
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otherwise the conversion from callnode to loadnode can't be done
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for the methodpointer unless the loadnode will also get a methodpointerinit and
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methodpointerdone node. For the moment we use register as temp and therefor
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don't create a temp-leak in the stackframe (PFV) }
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{ the last statement should return the value as
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location and type, this is done be referencing the
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temp and converting it first from a persistent temp to
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normal temp }
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addstatement(newdonestatement,ctempdeletenode.create_normal_temp(ptemp));
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addstatement(newdonestatement,ctemprefnode.create(ptemp));
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{ call resulttypepass for new nodes }
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resulttypepass(p);
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resulttypepass(aktcallnode.methodpointerinit);
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resulttypepass(aktcallnode.methodpointerdone);
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end;
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end;
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function gen_high_tree(var p:tnode;paradef:tdef):tnode;
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var
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temp: tnode;
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len : integer;
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loadconst : boolean;
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hightree : tnode;
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begin
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len:=-1;
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loadconst:=true;
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hightree:=nil;
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case p.resulttype.def.deftype of
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arraydef :
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begin
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if (paradef.deftype<>arraydef) then
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internalerror(200405241);
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{ passing a string to an array of char }
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if (p.nodetype=stringconstn) then
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begin
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len:=str_length(p);
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if len>0 then
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dec(len);
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end
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else
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{ handle special case of passing an single array to an array of array }
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if compare_defs(tarraydef(paradef).elementtype.def,p.resulttype.def,nothingn)>=te_equal then
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len:=0
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else
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begin
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{ handle via a normal inline in_high_x node }
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loadconst:=false;
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{ slice? }
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if (p.nodetype=inlinen) and (tinlinenode(p).inlinenumber=in_slice_x) then
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begin
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hightree:=tcallparanode(tcallparanode(tinlinenode(p).left).right).left;
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hightree:=caddnode.create(subn,hightree,genintconstnode(1));
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tcallparanode(tcallparanode(tinlinenode(p).left).right).left:=nil;
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temp:=p;
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p:=tcallparanode(tinlinenode(p).left).left;
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tcallparanode(tinlinenode(temp).left).left:=nil;
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temp.free;
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resulttypepass(hightree);
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end
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else
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begin
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maybe_load_para_in_temp(p);
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hightree:=geninlinenode(in_high_x,false,p.getcopy);
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resulttypepass(hightree);
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{ only substract low(array) if it's <> 0 }
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temp:=geninlinenode(in_low_x,false,p.getcopy);
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resulttypepass(temp);
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if (temp.nodetype <> ordconstn) or
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(tordconstnode(temp).value <> 0) then
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hightree := caddnode.create(subn,hightree,temp)
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else
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temp.free;
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end;
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end;
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end;
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stringdef :
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begin
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if is_open_string(paradef) then
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begin
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maybe_load_para_in_temp(p);
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{ handle via a normal inline in_high_x node }
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loadconst := false;
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hightree := geninlinenode(in_high_x,false,p.getcopy);
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end
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else
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begin
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{ passing a string to an array of char }
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if (p.nodetype=stringconstn) then
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begin
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len:=str_length(p);
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if len>0 then
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dec(len);
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end
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else
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begin
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maybe_load_para_in_temp(p);
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hightree:=caddnode.create(subn,geninlinenode(in_length_x,false,p.getcopy),
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cordconstnode.create(1,sinttype,false));
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loadconst:=false;
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end;
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end;
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end;
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else
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len:=0;
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end;
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if loadconst then
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hightree:=cordconstnode.create(len,sinttype,true)
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else
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begin
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if not assigned(hightree) then
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internalerror(200304071);
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{ Need to use explicit, because it can also be a enum }
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hightree:=ctypeconvnode.create_internal(hightree,sinttype);
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end;
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result:=hightree;
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end;
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{****************************************************************************
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TOBJECTINFOITEM
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****************************************************************************}
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constructor tobjectinfoitem.create(def : tobjectdef);
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begin
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inherited create;
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objinfo := def;
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end;
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{****************************************************************************
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TCALLPARANODE
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****************************************************************************}
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constructor tcallparanode.create(expr,next : tnode);
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begin
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inherited create(callparan,expr,next);
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if not assigned(expr) then
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internalerror(200305091);
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expr.fileinfo:=fileinfo;
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callparaflags:=[];
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end;
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destructor tcallparanode.destroy;
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begin
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{ When the node is used by callnode then
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we don't destroy left, the callnode takes care of it }
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if used_by_callnode then
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left:=nil;
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inherited destroy;
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end;
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constructor tcallparanode.ppuload(t:tnodetype;ppufile:tcompilerppufile);
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begin
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inherited ppuload(t,ppufile);
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ppufile.getsmallset(callparaflags);
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end;
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procedure tcallparanode.ppuwrite(ppufile:tcompilerppufile);
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begin
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inherited ppuwrite(ppufile);
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ppufile.putsmallset(callparaflags);
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end;
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function tcallparanode._getcopy : tnode;
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var
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n : tcallparanode;
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begin
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n:=tcallparanode(inherited _getcopy);
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n.callparaflags:=callparaflags;
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n.parasym:=parasym;
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result:=n;
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end;
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procedure tcallparanode.insertintolist(l : tnodelist);
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begin
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end;
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procedure tcallparanode.get_paratype;
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var
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old_array_constructor : boolean;
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begin
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inc(parsing_para_level);
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if assigned(right) then
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tcallparanode(right).get_paratype;
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old_array_constructor:=allow_array_constructor;
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allow_array_constructor:=true;
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resulttypepass(left);
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allow_array_constructor:=old_array_constructor;
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if codegenerror then
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resulttype:=generrortype
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else
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resulttype:=left.resulttype;
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dec(parsing_para_level);
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end;
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|
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procedure tcallparanode.insert_typeconv(do_count : boolean);
|
|
var
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oldtype : ttype;
|
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hp : tnode;
|
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{$ifdef extdebug}
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store_count_ref : boolean;
|
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{$endif def extdebug}
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begin
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inc(parsing_para_level);
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|
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{$ifdef extdebug}
|
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if do_count then
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begin
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store_count_ref:=count_ref;
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count_ref:=true;
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end;
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{$endif def extdebug}
|
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{ Be sure to have the resulttype }
|
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if not assigned(left.resulttype.def) then
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resulttypepass(left);
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|
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if (left.nodetype<>nothingn) then
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begin
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{ Convert tp procvars, this is needs to be done
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here to make the change permanent. in the overload
|
|
choosing the changes are only made temporary }
|
|
if (left.resulttype.def.deftype=procvardef) and
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|
(parasym.vartype.def.deftype<>procvardef) then
|
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begin
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if maybe_call_procvar(left,true) then
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resulttype:=left.resulttype;
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end;
|
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|
|
{ Remove implicitly inserted typecast to pointer for
|
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@procvar in macpas }
|
|
if (m_mac_procvar in aktmodeswitches) and
|
|
(parasym.vartype.def.deftype=procvardef) and
|
|
(left.nodetype=typeconvn) and
|
|
is_voidpointer(left.resulttype.def) and
|
|
(ttypeconvnode(left).left.nodetype=typeconvn) and
|
|
(ttypeconvnode(ttypeconvnode(left).left).convtype=tc_proc_2_procvar) then
|
|
begin
|
|
hp:=left;
|
|
left:=ttypeconvnode(left).left;
|
|
ttypeconvnode(hp).left:=nil;
|
|
hp.free;
|
|
end;
|
|
|
|
{ Handle varargs and hidden paras directly, no typeconvs or }
|
|
{ typechecking needed }
|
|
if (cpf_varargs_para in callparaflags) then
|
|
begin
|
|
{ convert pascal to C types }
|
|
case left.resulttype.def.deftype of
|
|
stringdef :
|
|
inserttypeconv(left,charpointertype);
|
|
floatdef :
|
|
inserttypeconv(left,s64floattype);
|
|
end;
|
|
set_varstate(left,vs_read,[vsf_must_be_valid]);
|
|
resulttype:=left.resulttype;
|
|
{ also update parasym type to get the correct parameter location
|
|
for the new types }
|
|
parasym.vartype:=left.resulttype;
|
|
end
|
|
else
|
|
if (vo_is_hidden_para in parasym.varoptions) then
|
|
begin
|
|
set_varstate(left,vs_read,[vsf_must_be_valid]);
|
|
resulttype:=left.resulttype;
|
|
end
|
|
else
|
|
begin
|
|
|
|
{ Do we need arrayconstructor -> set conversion, then insert
|
|
it here before the arrayconstructor node breaks the tree
|
|
with its conversions of enum->ord }
|
|
if (left.nodetype=arrayconstructorn) and
|
|
(parasym.vartype.def.deftype=setdef) then
|
|
inserttypeconv(left,parasym.vartype);
|
|
|
|
{ set some settings needed for arrayconstructor }
|
|
if is_array_constructor(left.resulttype.def) then
|
|
begin
|
|
if left.nodetype<>arrayconstructorn then
|
|
internalerror(200504041);
|
|
if is_array_of_const(parasym.vartype.def) then
|
|
begin
|
|
{ force variant array }
|
|
include(left.flags,nf_forcevaria);
|
|
end
|
|
else
|
|
begin
|
|
include(left.flags,nf_novariaallowed);
|
|
{ now that the resultting type is know we can insert the required
|
|
typeconvs for the array constructor }
|
|
if parasym.vartype.def.deftype=arraydef then
|
|
tarrayconstructornode(left).force_type(tarraydef(parasym.vartype.def).elementtype);
|
|
end;
|
|
end;
|
|
|
|
{ check if local proc/func is assigned to procvar }
|
|
if left.resulttype.def.deftype=procvardef then
|
|
test_local_to_procvar(tprocvardef(left.resulttype.def),parasym.vartype.def);
|
|
|
|
{ test conversions }
|
|
if not(is_shortstring(left.resulttype.def) and
|
|
is_shortstring(parasym.vartype.def)) and
|
|
(parasym.vartype.def.deftype<>formaldef) then
|
|
begin
|
|
{ Process open parameters }
|
|
if paramanager.push_high_param(parasym.varspez,parasym.vartype.def,aktcallnode.procdefinition.proccalloption) then
|
|
begin
|
|
{ insert type conv but hold the ranges of the array }
|
|
oldtype:=left.resulttype;
|
|
inserttypeconv(left,parasym.vartype);
|
|
left.resulttype:=oldtype;
|
|
end
|
|
else
|
|
begin
|
|
{ for ordinals, floats and enums, verify if we might cause
|
|
some range-check errors. }
|
|
if (parasym.vartype.def.deftype in [enumdef,orddef,floatdef]) and
|
|
(left.resulttype.def.deftype in [enumdef,orddef,floatdef]) and
|
|
(left.nodetype in [vecn,loadn,calln]) then
|
|
begin
|
|
if (left.resulttype.def.size>parasym.vartype.def.size) then
|
|
begin
|
|
if (cs_check_range in aktlocalswitches) then
|
|
Message(type_w_smaller_possible_range_check)
|
|
else
|
|
Message(type_h_smaller_possible_range_check);
|
|
end;
|
|
end;
|
|
inserttypeconv(left,parasym.vartype);
|
|
end;
|
|
if codegenerror then
|
|
begin
|
|
dec(parsing_para_level);
|
|
exit;
|
|
end;
|
|
end;
|
|
|
|
{ check var strings }
|
|
if (cs_strict_var_strings in aktlocalswitches) and
|
|
is_shortstring(left.resulttype.def) and
|
|
is_shortstring(parasym.vartype.def) and
|
|
(parasym.varspez in [vs_out,vs_var]) and
|
|
not(is_open_string(parasym.vartype.def)) and
|
|
not(equal_defs(left.resulttype.def,parasym.vartype.def)) then
|
|
begin
|
|
aktfilepos:=left.fileinfo;
|
|
CGMessage(type_e_strict_var_string_violation);
|
|
end;
|
|
|
|
{ Handle formal parameters separate }
|
|
if (parasym.vartype.def.deftype=formaldef) then
|
|
begin
|
|
{ load procvar if a procedure is passed }
|
|
if ((m_tp_procvar in aktmodeswitches) or
|
|
(m_mac_procvar in aktmodeswitches)) and
|
|
(left.nodetype=calln) and
|
|
(is_void(left.resulttype.def)) then
|
|
load_procvar_from_calln(left);
|
|
|
|
case parasym.varspez of
|
|
vs_var,
|
|
vs_out :
|
|
begin
|
|
if not valid_for_formal_var(left,true) then
|
|
CGMessagePos(left.fileinfo,parser_e_illegal_parameter_list);
|
|
end;
|
|
vs_const :
|
|
begin
|
|
if not valid_for_formal_const(left,true) then
|
|
CGMessagePos(left.fileinfo,parser_e_illegal_parameter_list);
|
|
end;
|
|
end;
|
|
end
|
|
else
|
|
begin
|
|
{ check if the argument is allowed }
|
|
if (parasym.varspez in [vs_out,vs_var]) then
|
|
valid_for_var(left,true);
|
|
end;
|
|
|
|
if parasym.varspez = vs_var then
|
|
set_unique(left);
|
|
|
|
{ When the address needs to be pushed then the register is
|
|
not regable. Exception is when the location is also a var
|
|
parameter and we can pass the address transparently }
|
|
if (
|
|
not(
|
|
(vo_is_hidden_para in parasym.varoptions) and
|
|
(left.resulttype.def.deftype in [pointerdef,classrefdef])
|
|
) and
|
|
paramanager.push_addr_param(parasym.varspez,parasym.vartype.def,
|
|
aktcallnode.procdefinition.proccalloption) and
|
|
not(
|
|
(left.nodetype=loadn) and
|
|
(tloadnode(left).is_addr_param_load)
|
|
)
|
|
) then
|
|
make_not_regable(left);
|
|
|
|
if do_count then
|
|
begin
|
|
case parasym.varspez of
|
|
vs_out :
|
|
set_varstate(left,vs_written,[]);
|
|
vs_var :
|
|
set_varstate(left,vs_readwritten,[vsf_must_be_valid,vsf_use_hints]);
|
|
else
|
|
set_varstate(left,vs_read,[vsf_must_be_valid]);
|
|
end;
|
|
end;
|
|
{ must only be done after typeconv PM }
|
|
resulttype:=parasym.vartype;
|
|
end;
|
|
end;
|
|
|
|
{ process next node }
|
|
if assigned(right) then
|
|
tcallparanode(right).insert_typeconv(do_count);
|
|
|
|
dec(parsing_para_level);
|
|
{$ifdef extdebug}
|
|
if do_count then
|
|
count_ref:=store_count_ref;
|
|
{$endif def extdebug}
|
|
end;
|
|
|
|
|
|
procedure tcallparanode.det_registers;
|
|
begin
|
|
if assigned(right) then
|
|
begin
|
|
tcallparanode(right).det_registers;
|
|
|
|
registersint:=right.registersint;
|
|
registersfpu:=right.registersfpu;
|
|
{$ifdef SUPPORT_MMX}
|
|
registersmmx:=right.registersmmx;
|
|
{$endif}
|
|
end;
|
|
|
|
firstpass(left);
|
|
|
|
if left.registersint>registersint then
|
|
registersint:=left.registersint;
|
|
if left.registersfpu>registersfpu then
|
|
registersfpu:=left.registersfpu;
|
|
{$ifdef SUPPORT_MMX}
|
|
if left.registersmmx>registersmmx then
|
|
registersmmx:=left.registersmmx;
|
|
{$endif SUPPORT_MMX}
|
|
end;
|
|
|
|
|
|
procedure tcallparanode.firstcallparan;
|
|
begin
|
|
if not assigned(left.resulttype.def) then
|
|
get_paratype;
|
|
det_registers;
|
|
end;
|
|
|
|
|
|
function tcallparanode.docompare(p: tnode): boolean;
|
|
begin
|
|
docompare :=
|
|
inherited docompare(p) and
|
|
(callparaflags = tcallparanode(p).callparaflags)
|
|
;
|
|
end;
|
|
|
|
|
|
procedure tcallparanode.printnodetree(var t:text);
|
|
begin
|
|
printnodelist(t);
|
|
end;
|
|
|
|
|
|
{****************************************************************************
|
|
TCALLNODE
|
|
****************************************************************************}
|
|
|
|
constructor tcallnode.create(l:tnode;v : tprocsym;st : tsymtable; mp: tnode; callflags:tcallnodeflags);
|
|
begin
|
|
inherited create(calln,l,nil);
|
|
symtableprocentry:=v;
|
|
symtableproc:=st;
|
|
callnodeflags:=callflags+[cnf_return_value_used];
|
|
methodpointer:=mp;
|
|
methodpointerinit:=nil;
|
|
methodpointerdone:=nil;
|
|
procdefinition:=nil;
|
|
_funcretnode:=nil;
|
|
paralength:=-1;
|
|
varargsparas:=nil;
|
|
end;
|
|
|
|
|
|
constructor tcallnode.create_procvar(l,r:tnode);
|
|
begin
|
|
inherited create(calln,l,r);
|
|
symtableprocentry:=nil;
|
|
symtableproc:=nil;
|
|
methodpointer:=nil;
|
|
methodpointerinit:=nil;
|
|
methodpointerdone:=nil;
|
|
procdefinition:=nil;
|
|
callnodeflags:=[cnf_return_value_used];
|
|
_funcretnode:=nil;
|
|
paralength:=-1;
|
|
varargsparas:=nil;
|
|
end;
|
|
|
|
|
|
constructor tcallnode.createintern(const name: string; params: tnode);
|
|
var
|
|
srsym: tsym;
|
|
symowner: tsymtable;
|
|
begin
|
|
if not (cs_compilesystem in aktmoduleswitches) then
|
|
begin
|
|
srsym := searchsymonlyin(systemunit,name);
|
|
symowner := systemunit;
|
|
end
|
|
else
|
|
begin
|
|
searchsym(name,srsym,symowner);
|
|
if not assigned(srsym) then
|
|
searchsym(upper(name),srsym,symowner);
|
|
end;
|
|
if not assigned(srsym) or
|
|
(srsym.typ<>procsym) then
|
|
Message1(cg_f_unknown_compilerproc,name);
|
|
self.create(params,tprocsym(srsym),symowner,nil,[]);
|
|
end;
|
|
|
|
|
|
constructor tcallnode.createinternres(const name: string; params: tnode; const res: ttype);
|
|
begin
|
|
self.createintern(name,params);
|
|
restype := res;
|
|
include(callnodeflags,cnf_restypeset);
|
|
{ both the normal and specified resulttype either have to be returned via a }
|
|
{ parameter or not, but no mixing (JM) }
|
|
if paramanager.ret_in_param(restype.def,symtableprocentry.first_procdef.proccalloption) xor
|
|
paramanager.ret_in_param(symtableprocentry.first_procdef.rettype.def,symtableprocentry.first_procdef.proccalloption) then
|
|
internalerror(200108291);
|
|
end;
|
|
|
|
|
|
constructor tcallnode.createinternreturn(const name: string; params: tnode; returnnode : tnode);
|
|
begin
|
|
self.createintern(name,params);
|
|
_funcretnode:=returnnode;
|
|
if not paramanager.ret_in_param(symtableprocentry.first_procdef.rettype.def,symtableprocentry.first_procdef.proccalloption) then
|
|
internalerror(200204247);
|
|
end;
|
|
|
|
|
|
procedure tcallnode.setfuncretnode(const returnnode: tnode);
|
|
var
|
|
para: tcallparanode;
|
|
begin
|
|
if assigned(_funcretnode) then
|
|
_funcretnode.free;
|
|
_funcretnode := returnnode;
|
|
{ if the resulttype pass hasn't occurred yet, that one will do }
|
|
{ everything }
|
|
if assigned(resulttype.def) then
|
|
begin
|
|
{ these are returned as values, but we can optimize their loading }
|
|
{ as well }
|
|
if is_ansistring(resulttype.def) or
|
|
is_widestring(resulttype.def) then
|
|
exit;
|
|
para := tcallparanode(left);
|
|
while assigned(para) do
|
|
begin
|
|
if (vo_is_hidden_para in para.parasym.varoptions) and
|
|
(vo_is_funcret in tparavarsym(para.parasym).varoptions) then
|
|
begin
|
|
para.left.free;
|
|
para.left := _funcretnode.getcopy;
|
|
exit;
|
|
end;
|
|
para := tcallparanode(para.right);
|
|
end;
|
|
{ no hidden resultpara found, error! }
|
|
if not(po_inline in procdefinition.procoptions) then
|
|
internalerror(200306087);
|
|
end;
|
|
end;
|
|
|
|
|
|
destructor tcallnode.destroy;
|
|
var
|
|
i : longint;
|
|
begin
|
|
methodpointer.free;
|
|
methodpointerinit.free;
|
|
methodpointerdone.free;
|
|
_funcretnode.free;
|
|
if assigned(varargsparas) then
|
|
begin
|
|
for i:=0 to varargsparas.count-1 do
|
|
tparavarsym(varargsparas[i]).free;
|
|
varargsparas.free;
|
|
end;
|
|
inherited destroy;
|
|
end;
|
|
|
|
|
|
constructor tcallnode.ppuload(t:tnodetype;ppufile:tcompilerppufile);
|
|
begin
|
|
inherited ppuload(t,ppufile);
|
|
ppufile.getderef(symtableprocentryderef);
|
|
{$ifdef fpc}
|
|
{$warning FIXME: No withsymtable support}
|
|
{$endif}
|
|
symtableproc:=nil;
|
|
ppufile.getderef(procdefinitionderef);
|
|
ppufile.getsmallset(callnodeflags);
|
|
methodpointer:=ppuloadnode(ppufile);
|
|
methodpointerinit:=tblocknode(ppuloadnode(ppufile));
|
|
methodpointerdone:=tblocknode(ppuloadnode(ppufile));
|
|
_funcretnode:=ppuloadnode(ppufile);
|
|
end;
|
|
|
|
|
|
procedure tcallnode.ppuwrite(ppufile:tcompilerppufile);
|
|
begin
|
|
inherited ppuwrite(ppufile);
|
|
ppufile.putderef(symtableprocentryderef);
|
|
ppufile.putderef(procdefinitionderef);
|
|
ppufile.putsmallset(callnodeflags);
|
|
ppuwritenode(ppufile,methodpointer);
|
|
ppuwritenode(ppufile,methodpointerinit);
|
|
ppuwritenode(ppufile,methodpointerdone);
|
|
ppuwritenode(ppufile,_funcretnode);
|
|
end;
|
|
|
|
|
|
procedure tcallnode.buildderefimpl;
|
|
begin
|
|
inherited buildderefimpl;
|
|
symtableprocentryderef.build(symtableprocentry);
|
|
procdefinitionderef.build(procdefinition);
|
|
if assigned(methodpointer) then
|
|
methodpointer.buildderefimpl;
|
|
if assigned(methodpointerinit) then
|
|
methodpointerinit.buildderefimpl;
|
|
if assigned(methodpointerdone) then
|
|
methodpointerdone.buildderefimpl;
|
|
if assigned(_funcretnode) then
|
|
_funcretnode.buildderefimpl;
|
|
end;
|
|
|
|
|
|
procedure tcallnode.derefimpl;
|
|
var
|
|
pt : tcallparanode;
|
|
i : integer;
|
|
begin
|
|
inherited derefimpl;
|
|
symtableprocentry:=tprocsym(symtableprocentryderef.resolve);
|
|
if assigned(symtableprocentry) then
|
|
symtableproc:=symtableprocentry.owner;
|
|
procdefinition:=tabstractprocdef(procdefinitionderef.resolve);
|
|
if assigned(methodpointer) then
|
|
methodpointer.derefimpl;
|
|
if assigned(methodpointerinit) then
|
|
methodpointerinit.derefimpl;
|
|
if assigned(methodpointerdone) then
|
|
methodpointerdone.derefimpl;
|
|
if assigned(_funcretnode) then
|
|
_funcretnode.derefimpl;
|
|
{ Connect parasyms }
|
|
pt:=tcallparanode(left);
|
|
while assigned(pt) and
|
|
(cpf_varargs_para in pt.callparaflags) do
|
|
pt:=tcallparanode(pt.right);
|
|
for i:=procdefinition.paras.count-1 downto 0 do
|
|
begin
|
|
if not assigned(pt) then
|
|
internalerror(200311077);
|
|
pt.parasym:=tparavarsym(procdefinition.paras[i]);
|
|
pt:=tcallparanode(pt.right);
|
|
end;
|
|
if assigned(pt) then
|
|
internalerror(200311078);
|
|
end;
|
|
|
|
|
|
function tcallnode._getcopy : tnode;
|
|
var
|
|
n : tcallnode;
|
|
i : integer;
|
|
hp,hpn : tparavarsym;
|
|
oldleft : tnode;
|
|
begin
|
|
{ Need to use a hack here to prevent the parameters from being copied.
|
|
The parameters must be copied between methodpointerinit/methodpointerdone because
|
|
the can reference methodpointer }
|
|
oldleft:=left;
|
|
left:=nil;
|
|
n:=tcallnode(inherited _getcopy);
|
|
left:=oldleft;
|
|
n.symtableprocentry:=symtableprocentry;
|
|
n.symtableproc:=symtableproc;
|
|
n.procdefinition:=procdefinition;
|
|
n.restype := restype;
|
|
n.callnodeflags := callnodeflags;
|
|
if assigned(methodpointerinit) then
|
|
n.methodpointerinit:=tblocknode(methodpointerinit._getcopy)
|
|
else
|
|
n.methodpointerinit:=nil;
|
|
{ methodpointerinit is copied, now references to the temp will also be copied
|
|
correctly. We can now copy the parameters and methodpointer }
|
|
if assigned(left) then
|
|
n.left:=left._getcopy
|
|
else
|
|
n.left:=nil;
|
|
if assigned(methodpointer) then
|
|
n.methodpointer:=methodpointer._getcopy
|
|
else
|
|
n.methodpointer:=nil;
|
|
if assigned(methodpointerdone) then
|
|
n.methodpointerdone:=tblocknode(methodpointerdone._getcopy)
|
|
else
|
|
n.methodpointerdone:=nil;
|
|
if assigned(_funcretnode) then
|
|
n._funcretnode:=_funcretnode._getcopy
|
|
else
|
|
n._funcretnode:=nil;
|
|
|
|
if assigned(varargsparas) then
|
|
begin
|
|
n.varargsparas:=tvarargsparalist.create;
|
|
for i:=0 to varargsparas.count-1 do
|
|
begin
|
|
hp:=tparavarsym(varargsparas[i]);
|
|
hpn:=tparavarsym.create(hp.realname,hp.paranr,hp.varspez,hp.vartype,[]);
|
|
n.varargsparas.add(hpn);
|
|
end;
|
|
end
|
|
else
|
|
n.varargsparas:=nil;
|
|
result:=n;
|
|
end;
|
|
|
|
|
|
procedure tcallnode.insertintolist(l : tnodelist);
|
|
|
|
begin
|
|
end;
|
|
|
|
|
|
procedure tcallnode.convert_carg_array_of_const;
|
|
var
|
|
hp : tarrayconstructornode;
|
|
oldleft : tcallparanode;
|
|
begin
|
|
oldleft:=tcallparanode(left);
|
|
if oldleft.left.nodetype<>arrayconstructorn then
|
|
begin
|
|
CGMessage1(type_e_wrong_type_in_array_constructor,oldleft.left.resulttype.def.typename);
|
|
exit;
|
|
end;
|
|
include(callnodeflags,cnf_uses_varargs);
|
|
{ Get arrayconstructor node and insert typeconvs }
|
|
hp:=tarrayconstructornode(oldleft.left);
|
|
hp.insert_typeconvs;
|
|
{ Add c args parameters }
|
|
{ It could be an empty set }
|
|
if assigned(hp) and
|
|
assigned(hp.left) then
|
|
begin
|
|
while assigned(hp) do
|
|
begin
|
|
left:=ccallparanode.create(hp.left,left);
|
|
{ set callparanode resulttype and flags }
|
|
left.resulttype:=hp.left.resulttype;
|
|
include(tcallparanode(left).callparaflags,cpf_varargs_para);
|
|
hp.left:=nil;
|
|
hp:=tarrayconstructornode(hp.right);
|
|
end;
|
|
end;
|
|
{ Remove value of old array of const parameter, but keep it
|
|
in the list because it is required for bind_parasym.
|
|
Generate a nothign to keep callparanoed.left valid }
|
|
oldleft.left.free;
|
|
oldleft.left:=cnothingnode.create;
|
|
end;
|
|
|
|
|
|
procedure tcallnode.verifyabstract(p : tnamedindexitem;arg:pointer);
|
|
|
|
var
|
|
hp : tprocdef;
|
|
j: integer;
|
|
begin
|
|
if (tsym(p).typ=procsym) then
|
|
begin
|
|
for j:=1 to tprocsym(p).procdef_count do
|
|
begin
|
|
{ index starts at 1 }
|
|
hp:=tprocsym(p).procdef[j];
|
|
{ If this is an abstract method insert into the list }
|
|
if (po_abstractmethod in hp.procoptions) then
|
|
AbstractMethodsList.Insert(hp.procsym.realname)
|
|
else
|
|
{ If this symbol is a virtual (includes override) method,
|
|
then remove it from the list }
|
|
if po_virtualmethod in hp.procoptions then
|
|
AbstractMethodsList.Remove(hp.procsym.realname);
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure tcallnode.verifyabstractcalls;
|
|
var
|
|
objectdf : tobjectdef;
|
|
parents : tlinkedlist;
|
|
objectinfo : tobjectinfoitem;
|
|
stritem : tstringlistitem;
|
|
begin
|
|
objectdf := nil;
|
|
{ verify if trying to create an instance of a class which contains
|
|
non-implemented abstract methods }
|
|
|
|
{ first verify this class type, no class than exit }
|
|
{ also, this checking can only be done if the constructor is directly
|
|
called, indirect constructor calls cannot be checked.
|
|
}
|
|
if assigned(methodpointer) then
|
|
begin
|
|
if (methodpointer.resulttype.def.deftype = objectdef) then
|
|
objectdf:=tobjectdef(methodpointer.resulttype.def)
|
|
else
|
|
if (methodpointer.resulttype.def.deftype = classrefdef) and
|
|
(tclassrefdef(methodpointer.resulttype.def).pointertype.def.deftype = objectdef) and
|
|
(methodpointer.nodetype in [typen,loadvmtaddrn]) then
|
|
objectdf:=tobjectdef(tclassrefdef(methodpointer.resulttype.def).pointertype.def);
|
|
end;
|
|
if not assigned(objectdf) then
|
|
exit;
|
|
|
|
parents := tlinkedlist.create;
|
|
AbstractMethodsList := tstringlist.create;
|
|
|
|
{ insert all parents in this class : the first item in the
|
|
list will be the base parent of the class .
|
|
}
|
|
while assigned(objectdf) do
|
|
begin
|
|
objectinfo:=tobjectinfoitem.create(objectdf);
|
|
parents.insert(objectinfo);
|
|
objectdf := objectdf.childof;
|
|
end;
|
|
{ now all parents are in the correct order
|
|
insert all abstract methods in the list, and remove
|
|
those which are overriden by parent classes.
|
|
}
|
|
objectinfo:=tobjectinfoitem(parents.first);
|
|
while assigned(objectinfo) do
|
|
begin
|
|
objectdf := objectinfo.objinfo;
|
|
if assigned(objectdf.symtable) then
|
|
objectdf.symtable.foreach(@verifyabstract,nil);
|
|
objectinfo:=tobjectinfoitem(objectinfo.next);
|
|
end;
|
|
if assigned(parents) then
|
|
parents.free;
|
|
{ Finally give out a warning for each abstract method still in the list }
|
|
stritem := tstringlistitem(AbstractMethodsList.first);
|
|
if assigned(stritem) then
|
|
Message1(type_w_instance_with_abstract,objectdf.objrealname^);
|
|
while assigned(stritem) do
|
|
begin
|
|
if assigned(stritem.fpstr) then
|
|
Message1(sym_h_param_list,stritem.str);
|
|
stritem := tstringlistitem(stritem.next);
|
|
end;
|
|
if assigned(AbstractMethodsList) then
|
|
AbstractMethodsList.Free;
|
|
end;
|
|
|
|
|
|
function tcallnode.gen_self_tree_methodpointer:tnode;
|
|
var
|
|
hsym : tfieldvarsym;
|
|
begin
|
|
{ find self field in methodpointer record }
|
|
hsym:=tfieldvarsym(trecorddef(methodpointertype.def).symtable.search('self'));
|
|
if not assigned(hsym) then
|
|
internalerror(200305251);
|
|
{ Load tmehodpointer(right).self }
|
|
result:=csubscriptnode.create(
|
|
hsym,
|
|
ctypeconvnode.create_internal(right.getcopy,methodpointertype));
|
|
end;
|
|
|
|
|
|
function tcallnode.gen_self_tree:tnode;
|
|
var
|
|
selftree : tnode;
|
|
begin
|
|
selftree:=nil;
|
|
|
|
{ inherited }
|
|
if (cnf_inherited in callnodeflags) then
|
|
selftree:=load_self_node
|
|
else
|
|
{ constructors }
|
|
if (procdefinition.proctypeoption=potype_constructor) then
|
|
begin
|
|
{ push 0 as self when allocation is needed }
|
|
if (methodpointer.resulttype.def.deftype=classrefdef) or
|
|
(cnf_new_call in callnodeflags) then
|
|
selftree:=cpointerconstnode.create(0,voidpointertype)
|
|
else
|
|
begin
|
|
if methodpointer.nodetype=typen then
|
|
selftree:=load_self_node
|
|
else
|
|
selftree:=methodpointer.getcopy;
|
|
end;
|
|
end
|
|
else
|
|
{ Calling a static/class method }
|
|
if (po_classmethod in procdefinition.procoptions) or
|
|
(po_staticmethod in procdefinition.procoptions) then
|
|
begin
|
|
if (procdefinition.deftype<>procdef) then
|
|
internalerror(200305062);
|
|
if (oo_has_vmt in tprocdef(procdefinition)._class.objectoptions) then
|
|
begin
|
|
{ we only need the vmt, loading self is not required and there is no
|
|
need to check for typen, because that will always get the
|
|
loadvmtaddrnode added }
|
|
selftree:=methodpointer.getcopy;
|
|
if methodpointer.resulttype.def.deftype<>classrefdef then
|
|
selftree:=cloadvmtaddrnode.create(selftree);
|
|
end
|
|
else
|
|
selftree:=cpointerconstnode.create(0,voidpointertype);
|
|
end
|
|
else
|
|
begin
|
|
if methodpointer.nodetype=typen then
|
|
selftree:=load_self_node
|
|
else
|
|
selftree:=methodpointer.getcopy;
|
|
end;
|
|
result:=selftree;
|
|
end;
|
|
|
|
|
|
function tcallnode.gen_vmt_tree:tnode;
|
|
var
|
|
vmttree : tnode;
|
|
begin
|
|
vmttree:=nil;
|
|
if not(procdefinition.proctypeoption in [potype_constructor,potype_destructor]) then
|
|
internalerror(200305051);
|
|
|
|
{ Handle classes and legacy objects separate to make it
|
|
more maintainable }
|
|
if (methodpointer.resulttype.def.deftype=classrefdef) then
|
|
begin
|
|
if not is_class(tclassrefdef(methodpointer.resulttype.def).pointertype.def) then
|
|
internalerror(200501041);
|
|
|
|
{ constructor call via classreference => allocate memory }
|
|
if (procdefinition.proctypeoption=potype_constructor) then
|
|
begin
|
|
vmttree:=methodpointer.getcopy;
|
|
{ Only a typenode can be passed when it is called with <class of xx>.create }
|
|
if vmttree.nodetype=typen then
|
|
vmttree:=cloadvmtaddrnode.create(vmttree);
|
|
end
|
|
else
|
|
begin
|
|
{ Call afterconstruction }
|
|
vmttree:=cpointerconstnode.create(1,voidpointertype);
|
|
end;
|
|
end
|
|
else
|
|
{ Class style objects }
|
|
if is_class(methodpointer.resulttype.def) then
|
|
begin
|
|
{ inherited call, no create/destroy }
|
|
if (cnf_inherited in callnodeflags) then
|
|
vmttree:=cpointerconstnode.create(0,voidpointertype)
|
|
else
|
|
{ do not create/destroy when called from member function
|
|
without specifying self explicit }
|
|
if (cnf_member_call in callnodeflags) then
|
|
begin
|
|
{ destructor: don't release instance, vmt=0
|
|
constructor:
|
|
if called from a constructor in the same class then
|
|
don't call afterconstruction, vmt=0
|
|
else
|
|
call afterconstrution, vmt=1 }
|
|
if (procdefinition.proctypeoption=potype_destructor) then
|
|
vmttree:=cpointerconstnode.create(0,voidpointertype)
|
|
else
|
|
begin
|
|
if (current_procinfo.procdef.proctypeoption=potype_constructor) and
|
|
(procdefinition.proctypeoption=potype_constructor) then
|
|
vmttree:=cpointerconstnode.create(0,voidpointertype)
|
|
else
|
|
vmttree:=cpointerconstnode.create(1,voidpointertype);
|
|
end;
|
|
end
|
|
else
|
|
{ normal call to method like cl1.proc }
|
|
begin
|
|
{ destructor: release instance, vmt=1
|
|
constructor:
|
|
if called from a constructor in the same class using self.create then
|
|
don't call afterconstruction, vmt=0
|
|
else
|
|
call afterconstrution, vmt=1 }
|
|
if (procdefinition.proctypeoption=potype_destructor) then
|
|
vmttree:=cpointerconstnode.create(1,voidpointertype)
|
|
else
|
|
begin
|
|
if (current_procinfo.procdef.proctypeoption=potype_constructor) and
|
|
(procdefinition.proctypeoption=potype_constructor) and
|
|
(nf_is_self in methodpointer.flags) then
|
|
vmttree:=cpointerconstnode.create(0,voidpointertype)
|
|
else
|
|
vmttree:=cpointerconstnode.create(1,voidpointertype);
|
|
end;
|
|
end;
|
|
end
|
|
else
|
|
{ Old style object }
|
|
begin
|
|
{ constructor with extended syntax called from new }
|
|
if (cnf_new_call in callnodeflags) then
|
|
vmttree:=cloadvmtaddrnode.create(ctypenode.create(methodpointer.resulttype))
|
|
else
|
|
{ destructor with extended syntax called from dispose }
|
|
if (cnf_dispose_call in callnodeflags) then
|
|
vmttree:=cloadvmtaddrnode.create(methodpointer.getcopy)
|
|
else
|
|
{ inherited call, no create/destroy }
|
|
if (cnf_inherited in callnodeflags) then
|
|
vmttree:=cpointerconstnode.create(0,voidpointertype)
|
|
else
|
|
{ do not create/destroy when called from member function
|
|
without specifying self explicit }
|
|
if (cnf_member_call in callnodeflags) then
|
|
begin
|
|
{ destructor: don't release instance, vmt=0
|
|
constructor: don't initialize instance, vmt=0 }
|
|
vmttree:=cpointerconstnode.create(0,voidpointertype)
|
|
end
|
|
else
|
|
{ normal object call like obj.proc }
|
|
begin
|
|
{ destructor: direct call, no dispose, vmt=0
|
|
constructor: initialize object, load vmt }
|
|
if (procdefinition.proctypeoption=potype_constructor) then
|
|
begin
|
|
{ old styled inherited call? }
|
|
if (methodpointer.nodetype=typen) then
|
|
vmttree:=cpointerconstnode.create(0,voidpointertype)
|
|
else
|
|
vmttree:=cloadvmtaddrnode.create(ctypenode.create(methodpointer.resulttype))
|
|
end
|
|
else
|
|
vmttree:=cpointerconstnode.create(0,voidpointertype);
|
|
end;
|
|
end;
|
|
result:=vmttree;
|
|
end;
|
|
|
|
|
|
procedure tcallnode.bind_parasym;
|
|
var
|
|
i : integer;
|
|
pt : tcallparanode;
|
|
oldppt : ^tcallparanode;
|
|
varargspara,
|
|
currpara : tparavarsym;
|
|
used_by_callnode : boolean;
|
|
hiddentree : tnode;
|
|
newstatement : tstatementnode;
|
|
temp : ttempcreatenode;
|
|
begin
|
|
pt:=tcallparanode(left);
|
|
oldppt:=@left;
|
|
|
|
{ flag all callparanodes that belong to the varargs }
|
|
i:=paralength;
|
|
while (i>procdefinition.maxparacount) do
|
|
begin
|
|
include(pt.callparaflags,cpf_varargs_para);
|
|
oldppt:=@pt.right;
|
|
pt:=tcallparanode(pt.right);
|
|
dec(i);
|
|
end;
|
|
|
|
{ skip varargs that are inserted by array of const }
|
|
while assigned(pt) and
|
|
(cpf_varargs_para in pt.callparaflags) do
|
|
pt:=tcallparanode(pt.right);
|
|
|
|
{ process normal parameters and insert hidden parameters }
|
|
for i:=procdefinition.paras.count-1 downto 0 do
|
|
begin
|
|
currpara:=tparavarsym(procdefinition.paras[i]);
|
|
if vo_is_hidden_para in currpara.varoptions then
|
|
begin
|
|
{ generate hidden tree }
|
|
used_by_callnode:=false;
|
|
hiddentree:=nil;
|
|
if (vo_is_funcret in currpara.varoptions) then
|
|
begin
|
|
{ Generate funcretnode if not specified }
|
|
if assigned(funcretnode) then
|
|
begin
|
|
hiddentree:=funcretnode.getcopy;
|
|
end
|
|
else
|
|
begin
|
|
hiddentree:=internalstatements(newstatement);
|
|
{ need to use resulttype instead of procdefinition.rettype,
|
|
because they can be different }
|
|
temp:=ctempcreatenode.create(resulttype,resulttype.def.size,tt_persistent,false);
|
|
addstatement(newstatement,temp);
|
|
addstatement(newstatement,ctempdeletenode.create_normal_temp(temp));
|
|
addstatement(newstatement,ctemprefnode.create(temp));
|
|
end;
|
|
end
|
|
else
|
|
if vo_is_high_para in currpara.varoptions then
|
|
begin
|
|
if not assigned(pt) or
|
|
(i=0) then
|
|
internalerror(200304082);
|
|
{ we need the information of the previous parameter }
|
|
hiddentree:=gen_high_tree(pt.left,tparavarsym(procdefinition.paras[i-1]).vartype.def);
|
|
end
|
|
else
|
|
if vo_is_self in currpara.varoptions then
|
|
begin
|
|
if assigned(right) then
|
|
hiddentree:=gen_self_tree_methodpointer
|
|
else
|
|
hiddentree:=gen_self_tree;
|
|
end
|
|
else
|
|
if vo_is_vmt in currpara.varoptions then
|
|
begin
|
|
hiddentree:=gen_vmt_tree;
|
|
end
|
|
{$if defined(powerpc) or defined(m68k)}
|
|
else
|
|
if vo_is_syscall_lib in currpara.varoptions then
|
|
begin
|
|
{ lib parameter has no special type but proccalloptions must be a syscall }
|
|
hiddentree:=cloadnode.create(tprocdef(procdefinition).libsym,tprocdef(procdefinition).libsym.owner);
|
|
end
|
|
{$endif powerpc or m68k}
|
|
else
|
|
if vo_is_parentfp in currpara.varoptions then
|
|
begin
|
|
if not(assigned(procdefinition.owner.defowner)) then
|
|
internalerror(200309287);
|
|
hiddentree:=cloadparentfpnode.create(tprocdef(procdefinition.owner.defowner));
|
|
end;
|
|
{ add the hidden parameter }
|
|
if not assigned(hiddentree) then
|
|
internalerror(200304073);
|
|
{ Already insert para and let the previous node point to
|
|
this new node }
|
|
pt:=ccallparanode.create(hiddentree,oldppt^);
|
|
pt.used_by_callnode:=used_by_callnode;
|
|
oldppt^:=pt;
|
|
end;
|
|
if not assigned(pt) then
|
|
internalerror(200310052);
|
|
pt.parasym:=currpara;
|
|
oldppt:=@pt.right;
|
|
pt:=tcallparanode(pt.right);
|
|
end;
|
|
|
|
|
|
{ Create parasyms for varargs, first count the number of varargs paras,
|
|
then insert the parameters with numbering in reverse order. The SortParas
|
|
will set the correct order at the end}
|
|
pt:=tcallparanode(left);
|
|
i:=0;
|
|
while assigned(pt) do
|
|
begin
|
|
if cpf_varargs_para in pt.callparaflags then
|
|
inc(i);
|
|
pt:=tcallparanode(pt.right);
|
|
end;
|
|
if (i>0) then
|
|
begin
|
|
varargsparas:=tvarargsparalist.create;
|
|
pt:=tcallparanode(left);
|
|
while assigned(pt) do
|
|
begin
|
|
if cpf_varargs_para in pt.callparaflags then
|
|
begin
|
|
varargspara:=tparavarsym.create('va'+tostr(i),i,vs_value,pt.resulttype,[]);
|
|
dec(i);
|
|
{ varargspara is left-right, use insert
|
|
instead of concat }
|
|
varargsparas.add(varargspara);
|
|
pt.parasym:=varargspara;
|
|
end;
|
|
pt:=tcallparanode(pt.right);
|
|
end;
|
|
varargsparas.sortparas;
|
|
end;
|
|
end;
|
|
|
|
|
|
function tcallnode.det_resulttype:tnode;
|
|
var
|
|
candidates : tcallcandidates;
|
|
oldcallnode : tcallnode;
|
|
hpt : tnode;
|
|
pt : tcallparanode;
|
|
lastpara : longint;
|
|
paraidx,
|
|
cand_cnt : integer;
|
|
i : longint;
|
|
is_const : boolean;
|
|
label
|
|
errorexit;
|
|
begin
|
|
result:=nil;
|
|
candidates:=nil;
|
|
|
|
oldcallnode:=aktcallnode;
|
|
aktcallnode:=self;
|
|
|
|
{ determine length of parameter list }
|
|
pt:=tcallparanode(left);
|
|
paralength:=0;
|
|
while assigned(pt) do
|
|
begin
|
|
inc(paralength);
|
|
pt:=tcallparanode(pt.right);
|
|
end;
|
|
|
|
{ determine the type of the parameters }
|
|
if assigned(left) then
|
|
begin
|
|
tcallparanode(left).get_paratype;
|
|
if codegenerror then
|
|
goto errorexit;
|
|
end;
|
|
|
|
if assigned(methodpointer) then
|
|
begin
|
|
resulttypepass(methodpointer);
|
|
maybe_load_para_in_temp(methodpointer);
|
|
end;
|
|
|
|
{ procedure variable ? }
|
|
if assigned(right) then
|
|
begin
|
|
set_varstate(right,vs_read,[vsf_must_be_valid]);
|
|
resulttypepass(right);
|
|
if codegenerror then
|
|
exit;
|
|
|
|
procdefinition:=tabstractprocdef(right.resulttype.def);
|
|
|
|
{ Compare parameters from right to left }
|
|
paraidx:=procdefinition.Paras.count-1;
|
|
{ Skip default parameters }
|
|
if not(po_varargs in procdefinition.procoptions) then
|
|
begin
|
|
{ ignore hidden parameters }
|
|
while (paraidx>=0) and (vo_is_hidden_para in tparavarsym(procdefinition.paras[paraidx]).varoptions) do
|
|
dec(paraidx);
|
|
for i:=1 to procdefinition.maxparacount-paralength do
|
|
begin
|
|
if paraidx<0 then
|
|
internalerror(200402261);
|
|
if not assigned(tparavarsym(procdefinition.paras[paraidx]).defaultconstsym) then
|
|
begin
|
|
CGMessage(parser_e_wrong_parameter_size);
|
|
goto errorexit;
|
|
end;
|
|
dec(paraidx);
|
|
end;
|
|
end;
|
|
while (paraidx>=0) and (vo_is_hidden_para in tparavarsym(procdefinition.paras[paraidx]).varoptions) do
|
|
dec(paraidx);
|
|
pt:=tcallparanode(left);
|
|
lastpara:=paralength;
|
|
while (paraidx>=0) and assigned(pt) do
|
|
begin
|
|
{ only goto next para if we're out of the varargs }
|
|
if not(po_varargs in procdefinition.procoptions) or
|
|
(lastpara<=procdefinition.maxparacount) then
|
|
begin
|
|
repeat
|
|
dec(paraidx);
|
|
until (paraidx<0) or not(vo_is_hidden_para in tparavarsym(procdefinition.paras[paraidx]).varoptions);
|
|
end;
|
|
pt:=tcallparanode(pt.right);
|
|
dec(lastpara);
|
|
end;
|
|
if assigned(pt) or
|
|
((paraidx>=0) and
|
|
not assigned(tparavarsym(procdefinition.paras[paraidx]).defaultconstsym)) then
|
|
begin
|
|
if assigned(pt) then
|
|
aktfilepos:=pt.fileinfo;
|
|
CGMessage(parser_e_wrong_parameter_size);
|
|
goto errorexit;
|
|
end;
|
|
end
|
|
else
|
|
{ not a procedure variable }
|
|
begin
|
|
{ do we know the procedure to call ? }
|
|
if not(assigned(procdefinition)) then
|
|
begin
|
|
candidates:=tcallcandidates.create(symtableprocentry,symtableproc,left,(nf_isproperty in flags),
|
|
{ ignore possible private in delphi mode for anon. inherited (FK) }
|
|
(m_delphi in aktmodeswitches) and (cnf_anon_inherited in callnodeflags));
|
|
|
|
{ no procedures found? then there is something wrong
|
|
with the parameter size or the procedures are
|
|
not accessible }
|
|
if candidates.count=0 then
|
|
begin
|
|
{ when it's an auto inherited call and there
|
|
is no procedure found, but the procedures
|
|
were defined with overload directive and at
|
|
least two procedures are defined then we ignore
|
|
this inherited by inserting a nothingn. Only
|
|
do this ugly hack in Delphi mode as it looks more
|
|
like a bug. It's also not documented }
|
|
if (m_delphi in aktmodeswitches) and
|
|
(cnf_anon_inherited in callnodeflags) and
|
|
(symtableprocentry.owner.symtabletype=objectsymtable) and
|
|
(po_overload in symtableprocentry.first_procdef.procoptions) and
|
|
(symtableprocentry.procdef_count>=2) then
|
|
result:=cnothingnode.create
|
|
else
|
|
begin
|
|
{ in tp mode we can try to convert to procvar if
|
|
there are no parameters specified. Only try it
|
|
when there is only one proc definition, else the
|
|
loadnode will give a strange error }
|
|
if not(assigned(left)) and
|
|
not(cnf_inherited in callnodeflags) and
|
|
((m_tp_procvar in aktmodeswitches) or
|
|
(m_mac_procvar in aktmodeswitches)) and
|
|
(symtableprocentry.procdef_count=1) then
|
|
begin
|
|
hpt:=cloadnode.create(tprocsym(symtableprocentry),symtableproc);
|
|
if assigned(methodpointer) then
|
|
tloadnode(hpt).set_mp(get_load_methodpointer);
|
|
resulttypepass(hpt);
|
|
result:=hpt;
|
|
end
|
|
else
|
|
begin
|
|
if assigned(left) then
|
|
aktfilepos:=left.fileinfo;
|
|
CGMessage(parser_e_wrong_parameter_size);
|
|
symtableprocentry.write_parameter_lists(nil);
|
|
end;
|
|
end;
|
|
goto errorexit;
|
|
end;
|
|
|
|
{ Retrieve information about the candidates }
|
|
candidates.get_information;
|
|
{$ifdef EXTDEBUG}
|
|
{ Display info when multiple candidates are found }
|
|
if candidates.count>1 then
|
|
candidates.dump_info(V_Debug);
|
|
{$endif EXTDEBUG}
|
|
|
|
{ Choose the best candidate and count the number of
|
|
candidates left }
|
|
cand_cnt:=candidates.choose_best(procdefinition);
|
|
|
|
{ All parameters are checked, check if there are any
|
|
procedures left }
|
|
if cand_cnt>0 then
|
|
begin
|
|
{ Multiple candidates left? }
|
|
if cand_cnt>1 then
|
|
begin
|
|
CGMessage(type_e_cant_choose_overload_function);
|
|
{$ifdef EXTDEBUG}
|
|
candidates.dump_info(V_Hint);
|
|
{$else EXTDEBUG}
|
|
candidates.list(false);
|
|
{$endif EXTDEBUG}
|
|
{ we'll just use the first candidate to make the
|
|
call }
|
|
end;
|
|
|
|
{ assign procdefinition }
|
|
if symtableproc=nil then
|
|
symtableproc:=procdefinition.owner;
|
|
|
|
{ update browser information }
|
|
if make_ref then
|
|
begin
|
|
tprocdef(procdefinition).lastref:=tref.create(tprocdef(procdefinition).lastref,@fileinfo);
|
|
inc(tprocdef(procdefinition).refcount);
|
|
if tprocdef(procdefinition).defref=nil then
|
|
tprocdef(procdefinition).defref:=tprocdef(procdefinition).lastref;
|
|
end;
|
|
end
|
|
else
|
|
begin
|
|
{ No candidates left, this must be a type error,
|
|
because wrong size is already checked. procdefinition
|
|
is filled with the first (random) definition that is
|
|
found. We use this definition to display a nice error
|
|
message that the wrong type is passed }
|
|
candidates.find_wrong_para;
|
|
candidates.list(true);
|
|
{$ifdef EXTDEBUG}
|
|
candidates.dump_info(V_Hint);
|
|
{$endif EXTDEBUG}
|
|
|
|
{ We can not proceed, release all procs and exit }
|
|
candidates.free;
|
|
goto errorexit;
|
|
end;
|
|
|
|
candidates.free;
|
|
end; { end of procedure to call determination }
|
|
end;
|
|
|
|
{ add needed default parameters }
|
|
if assigned(procdefinition) and
|
|
(paralength<procdefinition.maxparacount) then
|
|
begin
|
|
paraidx:=0;
|
|
i:=0;
|
|
while (i<paralength) do
|
|
begin
|
|
if paraidx>=procdefinition.Paras.count then
|
|
internalerror(200306181);
|
|
if not(vo_is_hidden_para in tparavarsym(procdefinition.paras[paraidx]).varoptions) then
|
|
inc(i);
|
|
inc(paraidx);
|
|
end;
|
|
while (paraidx<procdefinition.paras.count) and (vo_is_hidden_para in tparavarsym(procdefinition.paras[paraidx]).varoptions) do
|
|
inc(paraidx);
|
|
while (paraidx<procdefinition.paras.count) do
|
|
begin
|
|
if not assigned(tparavarsym(procdefinition.paras[paraidx]).defaultconstsym) then
|
|
internalerror(200212142);
|
|
left:=ccallparanode.create(genconstsymtree(
|
|
tconstsym(tparavarsym(procdefinition.paras[paraidx]).defaultconstsym)),left);
|
|
{ Ignore vs_hidden parameters }
|
|
repeat
|
|
inc(paraidx);
|
|
until (paraidx>=procdefinition.paras.count) or not(vo_is_hidden_para in tparavarsym(procdefinition.paras[paraidx]).varoptions);
|
|
end;
|
|
end;
|
|
|
|
{ handle predefined procedures }
|
|
is_const:=(po_internconst in procdefinition.procoptions) and
|
|
((block_type in [bt_const,bt_type]) or
|
|
(assigned(left) and (tcallparanode(left).left.nodetype in [realconstn,ordconstn])));
|
|
if (procdefinition.proccalloption=pocall_internproc) or is_const then
|
|
begin
|
|
if assigned(left) then
|
|
begin
|
|
{ ptr and settextbuf needs two args }
|
|
if assigned(tcallparanode(left).right) then
|
|
begin
|
|
hpt:=geninlinenode(tprocdef(procdefinition).extnumber,is_const,left);
|
|
left:=nil;
|
|
end
|
|
else
|
|
begin
|
|
hpt:=geninlinenode(tprocdef(procdefinition).extnumber,is_const,tcallparanode(left).left);
|
|
tcallparanode(left).left:=nil;
|
|
end;
|
|
end
|
|
else
|
|
hpt:=geninlinenode(tprocdef(procdefinition).extnumber,is_const,nil);
|
|
result:=hpt;
|
|
goto errorexit;
|
|
end;
|
|
|
|
{ ensure that the result type is set }
|
|
if not(cnf_restypeset in callnodeflags) then
|
|
begin
|
|
{ constructors return their current class type, not the type where the
|
|
constructor is declared, this can be different because of inheritance }
|
|
if (procdefinition.proctypeoption=potype_constructor) and
|
|
assigned(methodpointer) and
|
|
assigned(methodpointer.resulttype.def) and
|
|
(methodpointer.resulttype.def.deftype=classrefdef) then
|
|
resulttype:=tclassrefdef(methodpointer.resulttype.def).pointertype
|
|
else
|
|
{ Member call to a (inherited) constructor from the class, the return
|
|
value is always self, so we change it to voidtype to generate an
|
|
error and to prevent users from generating non-working code
|
|
when they expect to clone the current instance, see bug 3662 (PFV) }
|
|
if (procdefinition.proctypeoption=potype_constructor) and
|
|
is_class(tprocdef(procdefinition)._class) and
|
|
assigned(methodpointer) and
|
|
(nf_is_self in methodpointer.flags) then
|
|
resulttype:=voidtype
|
|
else
|
|
resulttype:=procdefinition.rettype;
|
|
end
|
|
else
|
|
resulttype:=restype;
|
|
|
|
{if resulttype.def.needs_inittable then
|
|
include(current_procinfo.flags,pi_needs_implicit_finally);}
|
|
|
|
if assigned(methodpointer) then
|
|
begin
|
|
{ when methodpointer is a callnode we must load it first into a
|
|
temp to prevent the processing callnode twice }
|
|
if (methodpointer.nodetype=calln) then
|
|
internalerror(200405121);
|
|
|
|
{ direct call to inherited abstract method, then we
|
|
can already give a error in the compiler instead
|
|
of a runtime error }
|
|
if (cnf_inherited in callnodeflags) and
|
|
(po_abstractmethod in procdefinition.procoptions) then
|
|
CGMessage(cg_e_cant_call_abstract_method);
|
|
|
|
{ if an inherited con- or destructor should be }
|
|
{ called in a con- or destructor then a warning }
|
|
{ will be made }
|
|
{ con- and destructors need a pointer to the vmt }
|
|
if (cnf_inherited in callnodeflags) and
|
|
(procdefinition.proctypeoption in [potype_constructor,potype_destructor]) and
|
|
is_object(methodpointer.resulttype.def) and
|
|
not(current_procinfo.procdef.proctypeoption in [potype_constructor,potype_destructor]) then
|
|
CGMessage(cg_w_member_cd_call_from_method);
|
|
|
|
if methodpointer.nodetype<>typen then
|
|
begin
|
|
{ Remove all postfix operators }
|
|
hpt:=methodpointer;
|
|
while assigned(hpt) and (hpt.nodetype in [subscriptn,vecn]) do
|
|
hpt:=tunarynode(hpt).left;
|
|
|
|
if (procdefinition.proctypeoption=potype_constructor) and
|
|
assigned(symtableproc) and
|
|
(symtableproc.symtabletype=withsymtable) and
|
|
(tnode(twithsymtable(symtableproc).withrefnode).nodetype=temprefn) then
|
|
CGmessage(cg_e_cannot_call_cons_dest_inside_with);
|
|
|
|
{ R.Init then R will be initialized by the constructor,
|
|
Also allow it for simple loads }
|
|
if (procdefinition.proctypeoption=potype_constructor) or
|
|
((hpt.nodetype=loadn) and
|
|
(
|
|
(methodpointer.resulttype.def.deftype=classrefdef) or
|
|
(
|
|
(methodpointer.resulttype.def.deftype=objectdef) and
|
|
not(oo_has_virtual in tobjectdef(methodpointer.resulttype.def).objectoptions)
|
|
)
|
|
)
|
|
) then
|
|
set_varstate(methodpointer,vs_read,[])
|
|
else
|
|
set_varstate(methodpointer,vs_read,[vsf_must_be_valid]);
|
|
|
|
{ The object is already used if it is called once }
|
|
if (hpt.nodetype=loadn) and
|
|
(tloadnode(hpt).symtableentry.typ in [localvarsym,paravarsym,globalvarsym]) then
|
|
set_varstate(hpt,vs_read,[]);
|
|
// tabstractvarsym(tloadnode(hpt).symtableentry).varstate:=vs_readwritten;
|
|
end;
|
|
|
|
{ if we are calling the constructor check for abstract
|
|
methods. Ignore inherited and member calls, because the
|
|
class is then already created }
|
|
if (procdefinition.proctypeoption=potype_constructor) and
|
|
not(cnf_inherited in callnodeflags) and
|
|
not(cnf_member_call in callnodeflags) then
|
|
verifyabstractcalls;
|
|
end
|
|
else
|
|
begin
|
|
{ When this is method the methodpointer must be available }
|
|
if (right=nil) and
|
|
(procdefinition.owner.symtabletype=objectsymtable) then
|
|
internalerror(200305061);
|
|
end;
|
|
|
|
{ Set flag that the procedure uses varargs, also if they are not passed it is still
|
|
needed for x86_64 to pass the number of SSE registers used }
|
|
if po_varargs in procdefinition.procoptions then
|
|
include(callnodeflags,cnf_uses_varargs);
|
|
|
|
{ Change loading of array of const to varargs }
|
|
if assigned(left) and
|
|
is_array_of_const(tparavarsym(procdefinition.paras[procdefinition.paras.count-1]).vartype.def) and
|
|
(procdefinition.proccalloption in [pocall_cppdecl,pocall_cdecl]) then
|
|
convert_carg_array_of_const;
|
|
|
|
{ bind parasyms to the callparanodes and insert hidden parameters }
|
|
bind_parasym;
|
|
|
|
{ insert type conversions for parameters }
|
|
if assigned(left) then
|
|
tcallparanode(left).insert_typeconv(true);
|
|
|
|
errorexit:
|
|
aktcallnode:=oldcallnode;
|
|
end;
|
|
|
|
|
|
procedure tcallnode.order_parameters;
|
|
var
|
|
hp,hpcurr,hpnext,hpfirst,hpprev : tcallparanode;
|
|
currloc : tcgloc;
|
|
begin
|
|
hpfirst:=nil;
|
|
hpcurr:=tcallparanode(left);
|
|
while assigned(hpcurr) do
|
|
begin
|
|
{ pull out }
|
|
hpnext:=tcallparanode(hpcurr.right);
|
|
{ pull in at the correct place.
|
|
Used order:
|
|
1. LOC_REFERENCE with smallest offset (x86 only)
|
|
2. LOC_REFERENCE with most registers
|
|
3. LOC_REGISTER with most registers
|
|
For the moment we only look at the first parameter field. Combining it
|
|
with multiple parameter fields will make things a lot complexer (PFV) }
|
|
if not assigned(hpcurr.parasym.paraloc[callerside].location) then
|
|
internalerror(200412152);
|
|
currloc:=hpcurr.parasym.paraloc[callerside].location^.loc;
|
|
hpprev:=nil;
|
|
hp:=hpfirst;
|
|
while assigned(hp) do
|
|
begin
|
|
case currloc of
|
|
LOC_REFERENCE :
|
|
begin
|
|
case hp.parasym.paraloc[callerside].location^.loc of
|
|
LOC_REFERENCE :
|
|
begin
|
|
{ Offset is calculated like:
|
|
sub esp,12
|
|
mov [esp+8],para3
|
|
mov [esp+4],para2
|
|
mov [esp],para1
|
|
call function
|
|
That means the for pushes the para with the
|
|
highest offset (see para3) needs to be pushed first
|
|
}
|
|
if (hpcurr.registersint>hp.registersint)
|
|
{$ifdef x86}
|
|
or (hpcurr.parasym.paraloc[callerside].location^.reference.offset>hp.parasym.paraloc[callerside].location^.reference.offset)
|
|
{$endif x86}
|
|
then
|
|
break;
|
|
end;
|
|
LOC_REGISTER,
|
|
LOC_FPUREGISTER :
|
|
break;
|
|
end;
|
|
end;
|
|
LOC_FPUREGISTER,
|
|
LOC_REGISTER :
|
|
begin
|
|
if (hp.parasym.paraloc[callerside].location^.loc=currloc) and
|
|
(hpcurr.registersint>hp.registersint) then
|
|
break;
|
|
end;
|
|
end;
|
|
hpprev:=hp;
|
|
hp:=tcallparanode(hp.right);
|
|
end;
|
|
hpcurr.right:=hp;
|
|
if assigned(hpprev) then
|
|
hpprev.right:=hpcurr
|
|
else
|
|
hpfirst:=hpcurr;
|
|
{ next }
|
|
hpcurr:=hpnext;
|
|
end;
|
|
left:=hpfirst;
|
|
end;
|
|
|
|
|
|
function tcallnode.replaceparaload(var n: tnode; arg: pointer): foreachnoderesult;
|
|
var
|
|
paras: tcallparanode;
|
|
temp: tnode;
|
|
begin
|
|
result := fen_false;
|
|
n.fileinfo := pfileposinfo(arg)^;
|
|
if (n.nodetype = loadn) then
|
|
begin
|
|
case tloadnode(n).symtableentry.typ of
|
|
paravarsym :
|
|
begin
|
|
paras := tcallparanode(left);
|
|
while assigned(paras) and
|
|
(paras.parasym <> tloadnode(n).symtableentry) do
|
|
paras := tcallparanode(paras.right);
|
|
if assigned(paras) then
|
|
begin
|
|
n.free;
|
|
n := paras.left.getcopy;
|
|
resulttypepass(n);
|
|
result := fen_true;
|
|
end;
|
|
end;
|
|
localvarsym :
|
|
begin
|
|
{ local? }
|
|
if (tloadnode(n).symtableentry.owner <> tprocdef(procdefinition).localst) then
|
|
exit;
|
|
if (tloadnode(n).symtableentry.indexnr >= inlinelocals.count) or
|
|
not assigned(inlinelocals[tloadnode(n).symtableentry.indexnr]) then
|
|
internalerror(20040720);
|
|
temp := tnode(inlinelocals[tloadnode(n).symtableentry.indexnr]).getcopy;
|
|
n.free;
|
|
n := temp;
|
|
resulttypepass(n);
|
|
result := fen_true;
|
|
end;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
|
|
type
|
|
ptempnodes = ^ttempnodes;
|
|
ttempnodes = record
|
|
createstatement, deletestatement: tstatementnode;
|
|
end;
|
|
|
|
procedure tcallnode.createlocaltemps(p:TNamedIndexItem;arg:pointer);
|
|
var
|
|
tempinfo: ptempnodes absolute arg;
|
|
tempnode: ttempcreatenode;
|
|
begin
|
|
if (tsymentry(p).typ <> localvarsym) then
|
|
exit;
|
|
if (p.indexnr >= inlinelocals.count) then
|
|
inlinelocals.count:=p.indexnr+10;
|
|
if (vo_is_funcret in tabstractvarsym(p).varoptions) and
|
|
assigned(funcretnode) then
|
|
begin
|
|
if node_complexity(funcretnode) > 1 then
|
|
begin
|
|
{ can this happen? }
|
|
{ we may have to replace the funcretnode with the address of funcretnode }
|
|
{ loaded in a temp in this case, because the expression may e.g. contain }
|
|
{ a global variable that gets changed inside the function }
|
|
internalerror(2004072101);
|
|
end;
|
|
inlinelocals[tabstractvarsym(p).indexnr] := funcretnode.getcopy
|
|
end
|
|
else
|
|
begin
|
|
tempnode := ctempcreatenode.create(tabstractvarsym(p).vartype,tabstractvarsym(p).vartype.def.size,tt_persistent,tabstractvarsym(p).varregable<>vr_none);
|
|
addstatement(tempinfo^.createstatement,tempnode);
|
|
if assigned(tlocalvarsym(p).defaultconstsym) then
|
|
begin
|
|
{ warning: duplicate from psub.pas:initializevars() -> must refactor }
|
|
addstatement(tempinfo^.createstatement,cassignmentnode.create(
|
|
ctemprefnode.create(tempnode),
|
|
cloadnode.create(tlocalvarsym(p).defaultconstsym,tlocalvarsym(p).defaultconstsym.owner)));
|
|
end;
|
|
if (vo_is_funcret in tlocalvarsym(p).varoptions) then
|
|
begin
|
|
funcretnode := ctemprefnode.create(tempnode);
|
|
addstatement(tempinfo^.deletestatement,ctempdeletenode.create_normal_temp(tempnode));
|
|
end
|
|
else
|
|
addstatement(tempinfo^.deletestatement,ctempdeletenode.create(tempnode));
|
|
inlinelocals[p.indexnr] := ctemprefnode.create(tempnode);
|
|
end;
|
|
end;
|
|
|
|
|
|
function nonlocalvars(var n: tnode; arg: pointer): foreachnoderesult;
|
|
begin
|
|
result := fen_false;
|
|
{ this is just to play it safe, there are more safe situations }
|
|
if (n.nodetype = derefn) or
|
|
((n.nodetype = loadn) and
|
|
{ globals and fields of (possibly global) objects could always be changed in the callee }
|
|
((tloadnode(n).symtable.symtabletype in [globalsymtable,objectsymtable]) or
|
|
{ statics can only be modified by functions in the same unit }
|
|
((tloadnode(n).symtable.symtabletype = staticsymtable) and
|
|
(tloadnode(n).symtable = tsymtable(arg))))) or
|
|
((n.nodetype = subscriptn) and
|
|
(tsubscriptnode(n).vs.owner.symtabletype = objectsymtable)) then
|
|
result := fen_norecurse_true;
|
|
end;
|
|
|
|
|
|
procedure tcallnode.createinlineparas(var createstatement, deletestatement: tstatementnode);
|
|
var
|
|
para: tcallparanode;
|
|
tempnode: ttempcreatenode;
|
|
tempnodes: ttempnodes;
|
|
n: tnode;
|
|
paracomplexity: longint;
|
|
begin
|
|
{ parameters }
|
|
para := tcallparanode(left);
|
|
while assigned(para) do
|
|
begin
|
|
if (para.parasym.typ = paravarsym) and
|
|
{ para.left will already be the same as funcretnode in the following case, so don't change }
|
|
(not(vo_is_funcret in tparavarsym(para.parasym).varoptions) or
|
|
(not assigned(funcretnode))) then
|
|
begin
|
|
{ must take copy of para.left, because if it contains a }
|
|
{ temprefn pointing to a copied temp (e.g. methodpointer), }
|
|
{ then this parameter must be changed to point to the copy of }
|
|
{ that temp (JM) }
|
|
n := para.left.getcopy;
|
|
para.left.free;
|
|
para.left := n;
|
|
firstpass(para.left);
|
|
|
|
{ create temps for value parameters, function result and also for }
|
|
{ const parameters which are passed by value instead of by reference }
|
|
{ we need to take care that we use the type of the defined parameter and not of the
|
|
passed parameter, because these can be different in case of a formaldef (PFV) }
|
|
paracomplexity := node_complexity(para.left);
|
|
{ check if we have to create a temp, assign the parameter's }
|
|
{ contents to that temp and then substitute the paramter }
|
|
{ with the temp everywhere in the function }
|
|
if
|
|
((tparavarsym(para.parasym).varregable = vr_none) and
|
|
not(para.left.expectloc in [LOC_REFERENCE,LOC_CREFERENCE])) or
|
|
{ we can't assign to formaldef temps }
|
|
((para.parasym.vartype.def.deftype<>formaldef) and
|
|
(
|
|
{ if paracomplexity > 1, we normally take the address of }
|
|
{ the parameter expression, store it in a temp and }
|
|
{ substitute the dereferenced temp in the inlined function }
|
|
{ We can't do this if we can't take the address of the }
|
|
{ parameter expression, so in that case assign to a temp }
|
|
((paracomplexity > 1) and
|
|
(not valid_for_addr(para.left,false) or
|
|
(para.left.nodetype = calln) or
|
|
is_constnode(para.left))) or
|
|
{ the problem is that we can't take the address of a function result :( }
|
|
(vo_is_funcret in tparavarsym(para.parasym).varoptions) or
|
|
{ we do not need to create a temp for value parameters }
|
|
{ which are not modified in the inlined function }
|
|
{ const parameters can get vs_readwritten if their }
|
|
{ address is taken }
|
|
((((para.parasym.varspez = vs_value) and
|
|
(para.parasym.varstate in [vs_initialised,vs_declared,vs_read])) or
|
|
{ in case of const, this is only necessary if the }
|
|
{ variable would be passed by value normally, or if }
|
|
{ there is such a variable somewhere in an expression }
|
|
((para.parasym.varspez = vs_const) and
|
|
(not paramanager.push_addr_param(vs_const,para.parasym.vartype.def,procdefinition.proccalloption) or
|
|
(paracomplexity > 1)))) and
|
|
{ however, if we pass a global variable, an object field or}
|
|
{ an expression containing a pointer dereference as }
|
|
{ parameter, this value could be modified in other ways as }
|
|
{ well and in such cases create a temp to be on the safe }
|
|
{ side }
|
|
foreachnodestatic(para.left,@nonlocalvars,pointer(symtableproc))) or
|
|
{ value parameters of which we know they are modified by }
|
|
{ definition have to be copied to a temp }
|
|
((para.parasym.varspez = vs_value) and
|
|
not(para.parasym.varstate in [vs_initialised,vs_declared,vs_read])) or
|
|
{ the compiler expects that it can take the address of parameters passed by reference in
|
|
the case of const so we can't replace the node simply by a constant node
|
|
When playing with this code, ensure that
|
|
function f(const a,b : longint) : longint;inline;
|
|
begin
|
|
result:=a*b;
|
|
end;
|
|
|
|
[...]
|
|
...:=f(10,20));
|
|
[...]
|
|
|
|
is still folded. (FK)
|
|
}
|
|
((para.parasym.varspez = vs_const) and
|
|
{ const para's can get vs_readwritten if their address }
|
|
{ is taken }
|
|
((para.parasym.varstate = vs_readwritten) or
|
|
{ call-by-reference const's may need to be passed by }
|
|
{ reference to function called in the inlined code }
|
|
(paramanager.push_addr_param(vs_const,para.parasym.vartype.def,procdefinition.proccalloption) and
|
|
(not valid_for_addr(para.left,false) or
|
|
is_constnode(para.left)))))
|
|
)
|
|
) then
|
|
begin
|
|
{ in theory, this is always regable, but ncgcall can't }
|
|
{ handle it yet in all situations (JM) }
|
|
tempnode := ctempcreatenode.create(para.parasym.vartype,para.parasym.vartype.def.size,tt_persistent,tparavarsym(para.parasym).varregable <> vr_none);
|
|
addstatement(createstatement,tempnode);
|
|
{ assign the value of the parameter to the temp, except in case of the function result }
|
|
{ (in that case, para.left is a block containing the creation of a new temp, while we }
|
|
{ only need a temprefnode, so delete the old stuff) }
|
|
if not(vo_is_funcret in tparavarsym(para.parasym).varoptions) then
|
|
begin
|
|
addstatement(createstatement,cassignmentnode.create(ctemprefnode.create(tempnode),
|
|
para.left));
|
|
para.left := ctemprefnode.create(tempnode);
|
|
addstatement(deletestatement,ctempdeletenode.create(tempnode));
|
|
end
|
|
else
|
|
begin
|
|
if not(assigned(funcretnode)) then
|
|
funcretnode := ctemprefnode.create(tempnode);
|
|
para.left.free;
|
|
para.left := ctemprefnode.create(tempnode);
|
|
|
|
addstatement(deletestatement,ctempdeletenode.create_normal_temp(tempnode));
|
|
end
|
|
end
|
|
{ otherwise if the parameter is "complex", take the address }
|
|
{ of the parameter expression, store it in a temp and replace }
|
|
{ occurrences of the parameter with dereferencings of this }
|
|
{ temp }
|
|
else if (paracomplexity > 1) then
|
|
begin
|
|
tempnode := ctempcreatenode.create(voidpointertype,voidpointertype.def.size,tt_persistent,tparavarsym(para.parasym).varregable<>vr_none);
|
|
addstatement(createstatement,tempnode);
|
|
addstatement(createstatement,cassignmentnode.create(ctemprefnode.create(tempnode),
|
|
caddrnode.create_internal(para.left)));
|
|
para.left := ctypeconvnode.create_internal(cderefnode.create(ctemprefnode.create(tempnode)),para.left.resulttype);
|
|
addstatement(deletestatement,ctempdeletenode.create(tempnode));
|
|
end;
|
|
end;
|
|
para := tcallparanode(para.right);
|
|
end;
|
|
{ local variables }
|
|
if not assigned(tprocdef(procdefinition).localst) or
|
|
(tprocdef(procdefinition).localst.symindex.count = 0) then
|
|
exit;
|
|
tempnodes.createstatement := createstatement;
|
|
tempnodes.deletestatement := deletestatement;
|
|
inlinelocals.count:=tprocdef(procdefinition).localst.symindex.count;
|
|
tprocdef(procdefinition).localst.foreach(@createlocaltemps,@tempnodes);
|
|
createstatement := tempnodes.createstatement;
|
|
deletestatement := tempnodes.deletestatement;
|
|
end;
|
|
|
|
|
|
|
|
function tcallnode.pass1_inline:tnode;
|
|
var
|
|
createstatement,deletestatement: tstatementnode;
|
|
createblock,deleteblock: tblocknode;
|
|
body : tnode;
|
|
i: longint;
|
|
begin
|
|
if not(assigned(tprocdef(procdefinition).inlininginfo) and
|
|
assigned(tprocdef(procdefinition).inlininginfo^.code)) then
|
|
internalerror(200412021);
|
|
{ inherit flags }
|
|
current_procinfo.flags := current_procinfo.flags + ((procdefinition as tprocdef).inlininginfo^.flags*inherited_inlining_flags);
|
|
{ create blocks for loading/deleting of local data }
|
|
createblock:=internalstatements(createstatement);
|
|
deleteblock:=internalstatements(deletestatement);
|
|
|
|
{ add methodpointer init code to init statement }
|
|
{ (fini must be done later, as it will delete the hookoncopy info) }
|
|
if assigned(methodpointerinit) then
|
|
addstatement(createstatement,methodpointerinit.getcopy);
|
|
|
|
inlinelocals:=tlist.create;
|
|
{ get copy of the procedure body }
|
|
body:=tprocdef(procdefinition).inlininginfo^.code.getcopy;
|
|
{ replace complex parameters with temps }
|
|
createinlineparas(createstatement,deletestatement);
|
|
{ replace the parameter loads with the parameter values }
|
|
foreachnode(body,@replaceparaload,@fileinfo);
|
|
|
|
{ copy methodpointer fini code }
|
|
if assigned(methodpointerdone) then
|
|
addstatement(deletestatement,methodpointerdone.getcopy);
|
|
|
|
{ free the temps for the locals }
|
|
for i := 0 to inlinelocals.count-1 do
|
|
if assigned(inlinelocals[i]) then
|
|
tnode(inlinelocals[i]).free;
|
|
inlinelocals.free;
|
|
inlinelocals:=nil;
|
|
addstatement(createstatement,body);
|
|
addstatement(createstatement,deleteblock);
|
|
{ set function result location if necessary }
|
|
if assigned(funcretnode) and
|
|
(cnf_return_value_used in callnodeflags) then
|
|
addstatement(createstatement,funcretnode.getcopy);
|
|
|
|
{ consider it must not be inlined if called
|
|
again inside the args or itself }
|
|
exclude(procdefinition.procoptions,po_inline);
|
|
|
|
dosimplify(createblock);
|
|
|
|
firstpass(createblock);
|
|
include(procdefinition.procoptions,po_inline);
|
|
{ return inlined block }
|
|
result := createblock;
|
|
|
|
{$ifdef DEBUGINLINE}
|
|
writeln;
|
|
writeln('**************************',tprocdef(procdefinition).mangledname);
|
|
printnode(output,result);
|
|
{$endif DEBUGINLINE}
|
|
end;
|
|
|
|
|
|
function tcallnode.pass_1 : tnode;
|
|
var
|
|
st : tsymtable;
|
|
begin
|
|
result:=nil;
|
|
|
|
{ Can we inline the procedure? }
|
|
if ([po_inline,po_has_inlininginfo] <= procdefinition.procoptions) then
|
|
begin
|
|
{ Check if we can inline the procedure when it references proc/var that
|
|
are not in the globally available }
|
|
st:=procdefinition.owner;
|
|
if (st.symtabletype=objectsymtable) then
|
|
st:=st.defowner.owner;
|
|
if (pi_uses_static_symtable in tprocdef(procdefinition).inlininginfo^.flags) and
|
|
(st.symtabletype=globalsymtable) and
|
|
(not st.iscurrentunit) then
|
|
begin
|
|
Comment(V_lineinfo+V_Debug,'Not inlining "'+tprocdef(procdefinition).procsym.realname+'", references static symtable');
|
|
end
|
|
else
|
|
begin
|
|
result:=pass1_inline;
|
|
exit;
|
|
end;
|
|
end;
|
|
|
|
{ calculate the parameter info for the procdef }
|
|
if not procdefinition.has_paraloc_info then
|
|
begin
|
|
procdefinition.requiredargarea:=paramanager.create_paraloc_info(procdefinition,callerside);
|
|
procdefinition.has_paraloc_info:=true;
|
|
end;
|
|
|
|
{ calculate the parameter size needed for this call include varargs if they are available }
|
|
if assigned(varargsparas) then
|
|
pushedparasize:=paramanager.create_varargs_paraloc_info(procdefinition,varargsparas)
|
|
else
|
|
pushedparasize:=procdefinition.requiredargarea;
|
|
|
|
{ record maximum parameter size used in this proc }
|
|
current_procinfo.allocate_push_parasize(pushedparasize);
|
|
|
|
{ work trough all parameters to get the register requirements }
|
|
if assigned(left) then
|
|
tcallparanode(left).det_registers;
|
|
|
|
{ order parameters }
|
|
order_parameters;
|
|
|
|
if assigned(methodpointerinit) then
|
|
firstpass(methodpointerinit);
|
|
|
|
if assigned(methodpointerdone) then
|
|
firstpass(methodpointerdone);
|
|
|
|
{ function result node }
|
|
if assigned(_funcretnode) then
|
|
firstpass(_funcretnode);
|
|
|
|
{ procedure variable ? }
|
|
if assigned(right) then
|
|
firstpass(right);
|
|
|
|
if not (block_type in [bt_const,bt_type]) then
|
|
include(current_procinfo.flags,pi_do_call);
|
|
|
|
{ implicit finally needed ? }
|
|
if resulttype.def.needs_inittable and
|
|
not paramanager.ret_in_param(resulttype.def,procdefinition.proccalloption) and
|
|
not assigned(funcretnode) then
|
|
include(current_procinfo.flags,pi_needs_implicit_finally);
|
|
|
|
{ get a register for the return value }
|
|
if (not is_void(resulttype.def)) then
|
|
begin
|
|
if paramanager.ret_in_param(resulttype.def,procdefinition.proccalloption) then
|
|
begin
|
|
expectloc:=LOC_REFERENCE;
|
|
end
|
|
else
|
|
{ for win32 records returned in EDX:EAX, we
|
|
move them to memory after ... }
|
|
if (resulttype.def.deftype=recorddef) then
|
|
begin
|
|
expectloc:=LOC_REFERENCE;
|
|
end
|
|
else
|
|
{ ansi/widestrings must be registered, so we can dispose them }
|
|
if is_ansistring(resulttype.def) or
|
|
is_widestring(resulttype.def) then
|
|
begin
|
|
expectloc:=LOC_REFERENCE;
|
|
registersint:=1;
|
|
end
|
|
else
|
|
{ we have only to handle the result if it is used }
|
|
if (cnf_return_value_used in callnodeflags) then
|
|
begin
|
|
case resulttype.def.deftype of
|
|
enumdef,
|
|
orddef :
|
|
begin
|
|
if (procdefinition.proctypeoption=potype_constructor) then
|
|
begin
|
|
expectloc:=LOC_REGISTER;
|
|
registersint:=1;
|
|
end
|
|
else
|
|
begin
|
|
expectloc:=LOC_REGISTER;
|
|
if is_64bit(resulttype.def) then
|
|
registersint:=2
|
|
else
|
|
registersint:=1;
|
|
end;
|
|
end;
|
|
floatdef :
|
|
begin
|
|
expectloc:=LOC_FPUREGISTER;
|
|
{$ifdef cpufpemu}
|
|
if (cs_fp_emulation in aktmoduleswitches) then
|
|
registersint:=1
|
|
else
|
|
{$endif cpufpemu}
|
|
{$ifdef m68k}
|
|
if (tfloatdef(resulttype.def).typ=s32real) then
|
|
registersint:=1
|
|
else
|
|
{$endif m68k}
|
|
registersfpu:=1;
|
|
end;
|
|
else
|
|
begin
|
|
expectloc:=LOC_REGISTER;
|
|
registersint:=1;
|
|
end;
|
|
end;
|
|
end
|
|
else
|
|
expectloc:=LOC_VOID;
|
|
end
|
|
else
|
|
expectloc:=LOC_VOID;
|
|
|
|
{$ifdef m68k}
|
|
{ we need one more address register for virtual calls on m68k }
|
|
if (po_virtualmethod in procdefinition.procoptions) then
|
|
inc(registersint);
|
|
{$endif m68k}
|
|
{ a fpu can be used in any procedure !! }
|
|
{$ifdef i386}
|
|
registersfpu:=procdefinition.fpu_used;
|
|
{$endif i386}
|
|
{ if this is a call to a method calc the registers }
|
|
if (methodpointer<>nil) then
|
|
begin
|
|
if methodpointer.nodetype<>typen then
|
|
begin
|
|
firstpass(methodpointer);
|
|
registersfpu:=max(methodpointer.registersfpu,registersfpu);
|
|
registersint:=max(methodpointer.registersint,registersint);
|
|
{$ifdef SUPPORT_MMX }
|
|
registersmmx:=max(methodpointer.registersmmx,registersmmx);
|
|
{$endif SUPPORT_MMX}
|
|
end;
|
|
end;
|
|
|
|
{ determine the registers of the procedure variable }
|
|
{ is this OK for inlined procs also ?? (PM) }
|
|
if assigned(right) then
|
|
begin
|
|
registersfpu:=max(right.registersfpu,registersfpu);
|
|
registersint:=max(right.registersint,registersint);
|
|
{$ifdef SUPPORT_MMX}
|
|
registersmmx:=max(right.registersmmx,registersmmx);
|
|
{$endif SUPPORT_MMX}
|
|
end;
|
|
{ determine the registers of the procedure }
|
|
if assigned(left) then
|
|
begin
|
|
registersfpu:=max(left.registersfpu,registersfpu);
|
|
registersint:=max(left.registersint,registersint);
|
|
{$ifdef SUPPORT_MMX}
|
|
registersmmx:=max(left.registersmmx,registersmmx);
|
|
{$endif SUPPORT_MMX}
|
|
end;
|
|
end;
|
|
|
|
{$ifdef state_tracking}
|
|
function Tcallnode.track_state_pass(exec_known:boolean):boolean;
|
|
|
|
var hp:Tcallparanode;
|
|
value:Tnode;
|
|
|
|
begin
|
|
track_state_pass:=false;
|
|
hp:=Tcallparanode(left);
|
|
while assigned(hp) do
|
|
begin
|
|
if left.track_state_pass(exec_known) then
|
|
begin
|
|
left.resulttype.def:=nil;
|
|
do_resulttypepass(left);
|
|
end;
|
|
value:=aktstate.find_fact(hp.left);
|
|
if value<>nil then
|
|
begin
|
|
track_state_pass:=true;
|
|
hp.left.destroy;
|
|
hp.left:=value.getcopy;
|
|
do_resulttypepass(hp.left);
|
|
end;
|
|
hp:=Tcallparanode(hp.right);
|
|
end;
|
|
end;
|
|
{$endif}
|
|
|
|
|
|
function tcallnode.para_count:longint;
|
|
var
|
|
ppn : tcallparanode;
|
|
begin
|
|
result:=0;
|
|
ppn:=tcallparanode(left);
|
|
while assigned(ppn) do
|
|
begin
|
|
if not(assigned(ppn.parasym) and
|
|
(vo_is_hidden_para in ppn.parasym.varoptions)) then
|
|
inc(result);
|
|
ppn:=tcallparanode(ppn.right);
|
|
end;
|
|
end;
|
|
|
|
|
|
function tcallnode.get_load_methodpointer:tnode;
|
|
var
|
|
newstatement : tstatementnode;
|
|
begin
|
|
if assigned(methodpointerinit) then
|
|
begin
|
|
result:=internalstatements(newstatement);
|
|
addstatement(newstatement,methodpointerinit);
|
|
addstatement(newstatement,methodpointer);
|
|
addstatement(newstatement,methodpointerdone);
|
|
methodpointerinit:=nil;
|
|
methodpointer:=nil;
|
|
methodpointerdone:=nil;
|
|
end
|
|
else
|
|
begin
|
|
result:=methodpointer;
|
|
methodpointer:=nil;
|
|
end;
|
|
end;
|
|
|
|
|
|
function tcallnode.docompare(p: tnode): boolean;
|
|
begin
|
|
docompare :=
|
|
inherited docompare(p) and
|
|
(symtableprocentry = tcallnode(p).symtableprocentry) and
|
|
(procdefinition = tcallnode(p).procdefinition) and
|
|
(methodpointer.isequal(tcallnode(p).methodpointer)) and
|
|
(((cnf_restypeset in callnodeflags) and (cnf_restypeset in tcallnode(p).callnodeflags) and
|
|
(equal_defs(restype.def,tcallnode(p).restype.def))) or
|
|
(not(cnf_restypeset in callnodeflags) and not(cnf_restypeset in tcallnode(p).callnodeflags)));
|
|
end;
|
|
|
|
|
|
procedure tcallnode.printnodedata(var t:text);
|
|
begin
|
|
if assigned(procdefinition) and
|
|
(procdefinition.deftype=procdef) then
|
|
writeln(t,printnodeindention,'proc = ',tprocdef(procdefinition).fullprocname(true))
|
|
else
|
|
begin
|
|
if assigned(symtableprocentry) then
|
|
writeln(t,printnodeindention,'proc = ',symtableprocentry.name)
|
|
else
|
|
writeln(t,printnodeindention,'proc = <nil>');
|
|
end;
|
|
printnode(t,methodpointer);
|
|
printnode(t,right);
|
|
printnode(t,left);
|
|
end;
|
|
|
|
|
|
begin
|
|
ccallnode:=tcallnode;
|
|
ccallparanode:=tcallparanode;
|
|
end.
|