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290 lines
9.1 KiB
ObjectPascal
290 lines
9.1 KiB
ObjectPascal
{
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$Id$
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Copyright (c) 1998-2002 by Florian Klaempfl
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Type checking and register allocation for inline nodes
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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****************************************************************************
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}
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unit nutils;
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{$i fpcdefs.inc}
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interface
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uses
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node;
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type
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{ resulttype of functions that process on all nodes in a (sub)tree }
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foreachnoderesult = (
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{ false, continue recursion }
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fen_false,
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{ false, stop recursion }
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fen_norecurse_false,
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{ true, continue recursion }
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fen_true,
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{ true, stop recursion }
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fen_norecurse_true
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);
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foreachnodefunction = function(var n: tnode): foreachnoderesult of object;
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staticforeachnodefunction = function(var n: tnode): foreachnoderesult;
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function foreachnode(var n: tnode; f: foreachnodefunction): boolean;
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function foreachnodestatic(var n: tnode; f: staticforeachnodefunction): boolean;
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function call_fail_node:tnode;
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function initialize_data_node(p:tnode):tnode;
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function finalize_data_node(p:tnode):tnode;
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implementation
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uses
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verbose,
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symconst,symsym,symtype,symdef,symtable,
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nbas,ncon,ncnv,nld,nflw,nset,ncal,nadd,nmem,
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cgbase,procinfo,
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pass_1;
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function foreachnode(var n: tnode; f: foreachnodefunction): boolean;
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begin
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result := false;
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if not assigned(n) then
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exit;
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case f(n) of
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fen_norecurse_false:
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exit;
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fen_norecurse_true:
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begin
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result := true;
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exit;
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end;
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fen_true:
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result := true;
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{ result is already false
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fen_false:
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result := false; }
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end;
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case n.nodetype of
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calln:
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begin
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{ not in one statement, won't work because of b- }
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result := foreachnode(tcallnode(n).methodpointer,f) or result;
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result := foreachnode(tcallnode(n).inlinecode,f) or result;
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end;
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ifn, whilerepeatn, forn:
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begin
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{ not in one statement, won't work because of b- }
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result := foreachnode(tloopnode(n).t1,f) or result;
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result := foreachnode(tloopnode(n).t2,f) or result;
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end;
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raisen:
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result := foreachnode(traisenode(n).frametree,f) or result;
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casen:
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result := foreachnode(tcasenode(n). elseblock,f) or result;
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end;
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if n.inheritsfrom(tbinarynode) then
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begin
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result := foreachnode(tbinarynode(n).right,f) or result;
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result := foreachnode(tbinarynode(n).left,f) or result;
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end
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else if n.inheritsfrom(tunarynode) then
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result := foreachnode(tunarynode(n).left,f) or result;
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end;
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function foreachnodestatic(var n: tnode; f: staticforeachnodefunction): boolean;
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begin
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result := false;
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if not assigned(n) then
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exit;
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case f(n) of
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fen_norecurse_false:
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exit;
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fen_norecurse_true:
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begin
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result := true;
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exit;
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end;
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fen_true:
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result := true;
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{ result is already false
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fen_false:
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result := false; }
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end;
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case n.nodetype of
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calln:
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begin
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result := foreachnodestatic(tcallnode(n).methodpointer,f) or result;
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result := foreachnodestatic(tcallnode(n).inlinecode,f) or result;
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end;
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ifn, whilerepeatn, forn:
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begin
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{ not in one statement, won't work because of b- }
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result := foreachnodestatic(tloopnode(n).t1,f) or result;
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result := foreachnodestatic(tloopnode(n).t2,f) or result;
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end;
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raisen:
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result := foreachnodestatic(traisenode(n).frametree,f) or result;
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casen:
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result := foreachnodestatic(tcasenode(n). elseblock,f) or result;
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end;
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if n.inheritsfrom(tbinarynode) then
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begin
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result := foreachnodestatic(tbinarynode(n).right,f) or result;
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result := foreachnodestatic(tbinarynode(n).left,f) or result;
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end
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else if n.inheritsfrom(tunarynode) then
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result := foreachnodestatic(tunarynode(n).left,f) or result;
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end;
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function call_fail_node:tnode;
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var
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para : tcallparanode;
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newstatement : tstatementnode;
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srsym : tsym;
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begin
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result:=internalstatements(newstatement);
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{ call fail helper and exit normal }
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if is_class(current_procinfo.procdef._class) then
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begin
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srsym:=search_class_member(current_procinfo.procdef._class,'FREEINSTANCE');
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if assigned(srsym) and
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(srsym.typ=procsym) then
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begin
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{ if self<>0 and vmt=1 then freeinstance }
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addstatement(newstatement,cifnode.create(
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caddnode.create(andn,
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caddnode.create(unequaln,
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load_self_pointer_node,
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cnilnode.create),
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caddnode.create(equaln,
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ctypeconvnode.create(
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load_vmt_pointer_node,
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voidpointertype),
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cpointerconstnode.create(1,voidpointertype))),
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ccallnode.create(nil,tprocsym(srsym),srsym.owner,load_self_node),
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nil));
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end
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else
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internalerror(200305108);
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end
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else
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if is_object(current_procinfo.procdef._class) then
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begin
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{ parameter 3 : vmt_offset }
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{ parameter 2 : pointer to vmt }
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{ parameter 1 : self pointer }
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para:=ccallparanode.create(
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cordconstnode.create(current_procinfo.procdef._class.vmt_offset,s32bittype,false),
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ccallparanode.create(
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ctypeconvnode.create_explicit(
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load_vmt_pointer_node,
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voidpointertype),
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ccallparanode.create(
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ctypeconvnode.create_explicit(
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load_self_pointer_node,
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voidpointertype),
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nil)));
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addstatement(newstatement,
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ccallnode.createintern('fpc_help_fail',para));
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end
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else
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internalerror(200305132);
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{ self:=nil }
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addstatement(newstatement,cassignmentnode.create(
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load_self_pointer_node,
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cnilnode.create));
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{ exit }
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addstatement(newstatement,cexitnode.create(nil));
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end;
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function initialize_data_node(p:tnode):tnode;
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begin
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if not assigned(p.resulttype.def) then
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resulttypepass(p);
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result:=ccallnode.createintern('fpc_initialize',
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ccallparanode.create(
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caddrnode.create(
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crttinode.create(
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tstoreddef(p.resulttype.def),initrtti)),
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ccallparanode.create(
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caddrnode.create(p),
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nil)));
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end;
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function finalize_data_node(p:tnode):tnode;
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begin
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if not assigned(p.resulttype.def) then
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resulttypepass(p);
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result:=ccallnode.createintern('fpc_finalize',
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ccallparanode.create(
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caddrnode.create(
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crttinode.create(
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tstoreddef(p.resulttype.def),initrtti)),
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ccallparanode.create(
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caddrnode.create(p),
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nil)));
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end;
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end.
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{
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$Log$
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Revision 1.8 2003-11-10 22:02:52 peter
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* cross unit inlining fixed
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Revision 1.7 2003/10/01 20:34:49 peter
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* procinfo unit contains tprocinfo
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* cginfo renamed to cgbase
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* moved cgmessage to verbose
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* fixed ppc and sparc compiles
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Revision 1.6 2003/06/13 21:19:30 peter
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* current_procdef removed, use current_procinfo.procdef instead
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Revision 1.5 2003/05/26 21:17:17 peter
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* procinlinenode removed
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* aktexit2label removed, fast exit removed
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+ tcallnode.inlined_pass_2 added
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Revision 1.4 2003/05/16 14:33:31 peter
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* regvar fixes
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Revision 1.3 2003/05/13 20:54:06 peter
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* fail checks vmt value before calling dispose
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Revision 1.2 2003/05/13 19:14:41 peter
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* failn removed
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* inherited result code check moven to pexpr
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Revision 1.1 2003/04/23 12:35:34 florian
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* fixed several issues with powerpc
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+ applied a patch from Jonas for nested function calls (PowerPC only)
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* ...
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}
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