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eb7e192226
constants in Delphi mode on non-treetypedconstbuilder platforms
(mantis #21267)
git-svn-id: trunk@21344 -
2078 lines
75 KiB
ObjectPascal
2078 lines
75 KiB
ObjectPascal
{
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Copyright (c) 1998-2011 by Florian Klaempfl, Jonas Maebe
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Generates code/nodes for typed constant declarations
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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 ngtcon;
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{$i fpcdefs.inc}
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interface
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uses
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globtype,
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aasmdata,
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node,nbas,
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symtype, symbase, symdef,symsym;
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type
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ttypedconstbuilder = class
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protected
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current_old_block_type : tblock_type;
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tcsym: tstaticvarsym;
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{ this procedure reads typed constants }
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procedure read_typed_const_data(def:tdef);
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procedure parse_orddef(def: torddef);
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procedure parse_floatdef(def: tfloatdef);
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procedure parse_classrefdef(def: tclassrefdef);
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procedure parse_pointerdef(def: tpointerdef);
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procedure parse_setdef(def: tsetdef);
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procedure parse_enumdef(def: tenumdef);
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procedure parse_stringdef(def: tstringdef);
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procedure parse_arraydef(def:tarraydef);virtual;abstract;
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procedure parse_procvardef(def:tprocvardef);virtual;abstract;
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procedure parse_recorddef(def:trecorddef);virtual;abstract;
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procedure parse_objectdef(def:tobjectdef);virtual;abstract;
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procedure tc_emit_orddef(def: torddef; var node: tnode);virtual;abstract;
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procedure tc_emit_floatdef(def: tfloatdef; var node: tnode);virtual;abstract;
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procedure tc_emit_classrefdef(def: tclassrefdef; var node: tnode);virtual;abstract;
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procedure tc_emit_pointerdef(def: tpointerdef; var node: tnode);virtual;abstract;
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procedure tc_emit_setdef(def: tsetdef; var node: tnode);virtual;abstract;
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procedure tc_emit_enumdef(def: tenumdef; var node: tnode);virtual;abstract;
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procedure tc_emit_stringdef(def: tstringdef; var node: tnode);virtual;abstract;
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public
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constructor create(sym: tstaticvarsym);
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end;
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ttypedconstbuilderclass = class of ttypedconstbuilder;
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{ should be changed into nested type of tasmlisttypedconstbuilder when
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possible }
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tbitpackedval = record
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curval, nextval: aword;
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curbitoffset: smallint;
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loadbitsize,packedbitsize: byte;
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end;
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tasmlisttypedconstbuilder = class(ttypedconstbuilder)
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private
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list: tasmlist;
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curoffset: asizeint;
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function parse_single_packed_const(def: tdef; var bp: tbitpackedval): boolean;
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protected
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procedure parse_packed_array_def(def: tarraydef);
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procedure parse_arraydef(def:tarraydef);override;
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procedure parse_procvardef(def:tprocvardef);override;
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procedure parse_recorddef(def:trecorddef);override;
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procedure parse_objectdef(def:tobjectdef);override;
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procedure tc_emit_orddef(def: torddef; var node: tnode);override;
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procedure tc_emit_floatdef(def: tfloatdef; var node: tnode); override;
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procedure tc_emit_classrefdef(def: tclassrefdef; var node: tnode);override;
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procedure tc_emit_pointerdef(def: tpointerdef; var node: tnode);override;
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procedure tc_emit_setdef(def: tsetdef; var node: tnode);override;
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procedure tc_emit_enumdef(def: tenumdef; var node: tnode);override;
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procedure tc_emit_stringdef(def: tstringdef; var node: tnode);override;
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public
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constructor create(sym: tstaticvarsym);virtual;
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function parse_into_asmlist: tasmlist;
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end;
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tasmlisttypedconstbuilderclass = class of tasmlisttypedconstbuilder;
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tnodetreetypedconstbuilder = class(ttypedconstbuilder)
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protected
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resultblock: tblocknode;
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statmnt: tstatementnode;
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{ when parsing a record, the base nade becomes a loadnode of the record,
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etc. }
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basenode: tnode;
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procedure parse_arraydef(def:tarraydef);override;
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procedure parse_procvardef(def:tprocvardef);override;
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procedure parse_recorddef(def:trecorddef);override;
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procedure parse_objectdef(def:tobjectdef);override;
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procedure tc_emit_orddef(def: torddef; var node: tnode);override;
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procedure tc_emit_floatdef(def: tfloatdef; var node: tnode); override;
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procedure tc_emit_classrefdef(def: tclassrefdef; var node: tnode);override;
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procedure tc_emit_pointerdef(def: tpointerdef; var node: tnode);override;
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procedure tc_emit_setdef(def: tsetdef; var node: tnode);override;
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procedure tc_emit_enumdef(def: tenumdef; var node: tnode);override;
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procedure tc_emit_stringdef(def: tstringdef; var node: tnode);override;
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public
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constructor create(sym: tstaticvarsym; previnit: tnode);virtual;
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destructor destroy;override;
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function parse_into_nodetree: tnode;
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end;
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tnodetreetypedconstbuilderclass = class of tnodetreetypedconstbuilder;
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var
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ctypedconstbuilder: ttypedconstbuilderclass;
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implementation
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uses
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SysUtils,
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cclasses,systems,tokens,verbose,constexp,
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cutils,globals,widestr,scanner,
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symconst,symtable,
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aasmbase,aasmtai,aasmcpu,defutil,defcmp,
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{ pass 1 }
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htypechk,procinfo,
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nmat,nadd,ncal,nmem,nset,ncnv,ninl,ncon,nld,nflw,
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{ parser specific stuff }
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pbase,pexpr,pdecvar,
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{ codegen }
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cpuinfo,cgbase,dbgbase,
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wpobase,asmutils
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;
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{$maxfpuregisters 0}
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function get_next_varsym(def: tabstractrecorddef; const SymList:TFPHashObjectList; var symidx:longint):tsym;inline;
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begin
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while symidx<SymList.Count do
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begin
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result:=tsym(def.symtable.SymList[symidx]);
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inc(symidx);
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if result.typ=fieldvarsym then
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exit;
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end;
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result:=nil;
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end;
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{*****************************************************************************
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read typed const
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*****************************************************************************}
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procedure ttypedconstbuilder.parse_orddef(def:torddef);
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var
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n : tnode;
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begin
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n:=comp_expr(true,false);
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{ for C-style booleans, true=-1 and false=0) }
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if is_cbool(def) then
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inserttypeconv(n,def);
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tc_emit_orddef(def,n);
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n.free;
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end;
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procedure ttypedconstbuilder.parse_floatdef(def:tfloatdef);
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var
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n : tnode;
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begin
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n:=comp_expr(true,false);
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tc_emit_floatdef(def,n);
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n.free;
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end;
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procedure ttypedconstbuilder.parse_classrefdef(def:tclassrefdef);
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var
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n : tnode;
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begin
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n:=comp_expr(true,false);
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case n.nodetype of
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loadvmtaddrn:
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begin
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{ update wpo info }
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if not assigned(current_procinfo) or
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(po_inline in current_procinfo.procdef.procoptions) or
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wpoinfomanager.symbol_live(current_procinfo.procdef.mangledname) then
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tobjectdef(tclassrefdef(n.resultdef).pointeddef).register_maybe_created_object_type;
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end;
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end;
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tc_emit_classrefdef(def,n);
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n.free;
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end;
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procedure ttypedconstbuilder.parse_pointerdef(def:tpointerdef);
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var
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p: tnode;
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begin
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p:=comp_expr(true,false);
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tc_emit_pointerdef(def,p);
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p.free;
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end;
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procedure ttypedconstbuilder.parse_setdef(def:tsetdef);
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var
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p : tnode;
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begin
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p:=comp_expr(true,false);
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tc_emit_setdef(def,p);
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p.free;
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end;
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procedure ttypedconstbuilder.parse_enumdef(def:tenumdef);
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var
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p : tnode;
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begin
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p:=comp_expr(true,false);
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tc_emit_enumdef(def,p);
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p.free;
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end;
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procedure ttypedconstbuilder.parse_stringdef(def:tstringdef);
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var
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n : tnode;
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begin
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n:=comp_expr(true,false);
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tc_emit_stringdef(def,n);
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n.free;
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end;
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{ ttypedconstbuilder }
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procedure ttypedconstbuilder.read_typed_const_data(def:tdef);
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var
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prev_old_block_type,
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old_block_type: tblock_type;
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begin
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old_block_type:=block_type;
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prev_old_block_type:=current_old_block_type;
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current_old_block_type:=old_block_type;
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block_type:=bt_const;
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case def.typ of
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orddef :
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parse_orddef(torddef(def));
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floatdef :
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parse_floatdef(tfloatdef(def));
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classrefdef :
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parse_classrefdef(tclassrefdef(def));
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pointerdef :
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parse_pointerdef(tpointerdef(def));
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setdef :
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parse_setdef(tsetdef(def));
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enumdef :
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parse_enumdef(tenumdef(def));
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stringdef :
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parse_stringdef(tstringdef(def));
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arraydef :
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parse_arraydef(tarraydef(def));
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procvardef:
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parse_procvardef(tprocvardef(def));
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recorddef:
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parse_recorddef(trecorddef(def));
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objectdef:
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parse_objectdef(tobjectdef(def));
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errordef:
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begin
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{ try to consume something useful }
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if token=_LKLAMMER then
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consume_all_until(_RKLAMMER)
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else
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consume_all_until(_SEMICOLON);
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end;
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else
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Message(parser_e_type_const_not_possible);
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end;
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block_type:=old_block_type;
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current_old_block_type:=prev_old_block_type;
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end;
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constructor ttypedconstbuilder.create(sym: tstaticvarsym);
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begin
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tcsym:=sym;
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end;
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{*****************************************************************************
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Bitpacked value helpers
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*****************************************************************************}
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procedure initbitpackval(out bp: tbitpackedval; packedbitsize: byte);
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begin
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bp.curval:=0;
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bp.nextval:=0;
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bp.curbitoffset:=0;
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bp.packedbitsize:=packedbitsize;
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bp.loadbitsize:=packedbitsloadsize(bp.packedbitsize)*8;
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end;
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{$push}
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{$r-}
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{$q-}
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{ (values between quotes below refer to fields of bp; fields not }
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{ mentioned are unused by this routine) }
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{ bitpacks "value" as bitpacked value of bitsize "packedbitsize" into }
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{ "curval", which has already been filled up to "curbitoffset", and }
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{ stores the spillover if any into "nextval". It also updates }
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{ curbitoffset to reflect how many bits of currval are now used (can be }
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{ > AIntBits in case of spillover) }
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procedure bitpackval(value: aword; var bp: tbitpackedval);
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var
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shiftcount: longint;
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begin
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if (target_info.endian=endian_big) then
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begin
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{ bitpacked format: left-aligned (i.e., "big endian bitness") }
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bp.curval:=bp.curval or ((value shl (AIntBits-bp.packedbitsize)) shr bp.curbitoffset);
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shiftcount:=((AIntBits-bp.packedbitsize)-bp.curbitoffset);
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{ carry-over to the next element? }
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if (shiftcount<0) then
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bp.nextval:=(value and ((aword(1) shl (-shiftcount))-1)) shl
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(AIntBits+shiftcount)
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end
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else
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begin
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{ bitpacked format: right aligned (i.e., "little endian bitness") }
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bp.curval:=bp.curval or (value shl bp.curbitoffset);
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{ carry-over to the next element? }
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if (bp.curbitoffset+bp.packedbitsize>AIntBits) then
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bp.nextval:=value shr (AIntBits-bp.curbitoffset)
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end;
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inc(bp.curbitoffset,bp.packedbitsize);
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end;
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{$pop}
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procedure flush_packed_value(list: tasmlist; var bp: tbitpackedval);
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var
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bitstowrite: longint;
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writeval : byte;
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begin
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if (bp.curbitoffset < AIntBits) then
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begin
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{ forced flush -> write multiple of loadsize }
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bitstowrite:=align(bp.curbitoffset,bp.loadbitsize);
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bp.curbitoffset:=0;
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end
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else
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begin
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bitstowrite:=AIntBits;
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dec(bp.curbitoffset,AIntBits);
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end;
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while (bitstowrite>=8) do
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begin
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if (target_info.endian=endian_little) then
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begin
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{ write lowest byte }
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writeval:=byte(bp.curval);
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bp.curval:=bp.curval shr 8;
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end
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else
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begin
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{ write highest byte }
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writeval:=bp.curval shr (AIntBits-8);
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bp.curval:=(bp.curval and (not($ff shl (AIntBits-8)))) shl 8;
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end;
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list.concat(tai_const.create_8bit(writeval));
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dec(bitstowrite,8);
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end;
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bp.curval:=bp.nextval;
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bp.nextval:=0;
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end;
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{ parses a packed array constant }
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procedure tasmlisttypedconstbuilder.parse_packed_array_def(def: tarraydef);
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var
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i : aint;
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bp : tbitpackedval;
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begin
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if not(def.elementdef.typ in [orddef,enumdef]) then
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internalerror(2007022010);
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{ begin of the array }
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consume(_LKLAMMER);
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initbitpackval(bp,def.elepackedbitsize);
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i:=def.lowrange;
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{ can't use for-loop, fails when cross-compiling from }
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{ 32 to 64 bit because i is then 64 bit }
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while (i<def.highrange) do
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begin
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{ get next item of the packed array }
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if not parse_single_packed_const(def.elementdef,bp) then
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exit;
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consume(_COMMA);
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inc(i);
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end;
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{ final item }
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if not parse_single_packed_const(def.elementdef,bp) then
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exit;
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{ flush final incomplete value if necessary }
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if (bp.curbitoffset <> 0) then
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flush_packed_value(list,bp);
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consume(_RKLAMMER);
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end;
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constructor tasmlisttypedconstbuilder.create(sym: tstaticvarsym);
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begin
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inherited;
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list:=tasmlist.create;
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curoffset:=0;
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end;
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procedure tasmlisttypedconstbuilder.tc_emit_stringdef(def: tstringdef; var node: tnode);
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var
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strlength : aint;
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strval : pchar;
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strch : char;
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ll : tasmlabofs;
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ca : pchar;
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winlike : boolean;
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hsym : tconstsym;
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begin
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{ load strval and strlength of the constant tree }
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if (node.nodetype=stringconstn) or is_wide_or_unicode_string(def) or is_constwidecharnode(node) or
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((node.nodetype=typen) and is_interfacecorba(ttypenode(node).typedef)) then
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begin
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{ convert to the expected string type so that
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for widestrings strval is a pcompilerwidestring }
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inserttypeconv(node,def);
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if (not codegenerror) and
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(node.nodetype=stringconstn) then
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begin
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strlength:=tstringconstnode(node).len;
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strval:=tstringconstnode(node).value_str;
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end
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else
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begin
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{ an error occurred trying to convert the result to a string }
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strlength:=-1;
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{ it's possible that the type conversion could not be
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evaluated at compile-time }
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if not codegenerror then
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CGMessage(parser_e_widestring_to_ansi_compile_time);
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end;
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end
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else if is_constcharnode(node) then
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begin
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{ strval:=pchar(@tordconstnode(node).value);
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THIS FAIL on BIG_ENDIAN MACHINES PM }
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strch:=chr(tordconstnode(node).value.svalue and $ff);
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strval:=@strch;
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strlength:=1
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end
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else if is_constresourcestringnode(node) then
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begin
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hsym:=tconstsym(tloadnode(node).symtableentry);
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strval:=pchar(hsym.value.valueptr);
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strlength:=hsym.value.len;
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{ Delphi-compatible (mis)feature:
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Link AnsiString constants to their initializing resourcestring,
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enabling them to be (re)translated at runtime.
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Wide/UnicodeString are currently rejected above (with incorrect error message).
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ShortStrings cannot be handled unless another table is built for them;
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considering this acceptable, because Delphi rejects them altogether.
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}
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if (not is_shortstring(def)) and
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((tcsym.owner.symtablelevel<=main_program_level) or
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(current_old_block_type=bt_const)) then
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begin
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current_asmdata.ResStrInits.Concat(
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TTCInitItem.Create(tcsym,curoffset,
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current_asmdata.RefAsmSymbol(make_mangledname('RESSTR',hsym.owner,hsym.name)))
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);
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Include(tcsym.varoptions,vo_force_finalize);
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end;
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end
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else
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begin
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Message(parser_e_illegal_expression);
|
|
strlength:=-1;
|
|
end;
|
|
if strlength>=0 then
|
|
begin
|
|
case def.stringtype of
|
|
st_shortstring:
|
|
begin
|
|
if strlength>=def.size then
|
|
begin
|
|
message2(parser_w_string_too_long,strpas(strval),tostr(def.size-1));
|
|
strlength:=def.size-1;
|
|
end;
|
|
list.concat(Tai_const.Create_8bit(strlength));
|
|
{ this can also handle longer strings }
|
|
getmem(ca,strlength+1);
|
|
move(strval^,ca^,strlength);
|
|
ca[strlength]:=#0;
|
|
list.concat(Tai_string.Create_pchar(ca,strlength));
|
|
{ fillup with spaces if size is shorter }
|
|
if def.size>strlength then
|
|
begin
|
|
getmem(ca,def.size-strlength);
|
|
{ def.size contains also the leading length, so we }
|
|
{ we have to subtract one }
|
|
fillchar(ca[0],def.size-strlength-1,' ');
|
|
ca[def.size-strlength-1]:=#0;
|
|
{ this can also handle longer strings }
|
|
list.concat(Tai_string.Create_pchar(ca,def.size-strlength-1));
|
|
end;
|
|
end;
|
|
st_ansistring:
|
|
begin
|
|
{ an empty ansi string is nil! }
|
|
if (strlength=0) then
|
|
begin
|
|
ll.lab:=nil;
|
|
ll.ofs:=0;
|
|
end
|
|
else
|
|
ll:=emit_ansistring_const(current_asmdata.asmlists[al_const],strval,strlength,def.encoding);
|
|
list.concat(Tai_const.Create_sym_offset(ll.lab,ll.ofs));
|
|
end;
|
|
st_unicodestring,
|
|
st_widestring:
|
|
begin
|
|
{ an empty wide/unicode string is nil! }
|
|
if (strlength=0) then
|
|
begin
|
|
ll.lab:=nil;
|
|
ll.ofs:=0;
|
|
end
|
|
else
|
|
begin
|
|
winlike:=(def.stringtype=st_widestring) and (tf_winlikewidestring in target_info.flags);
|
|
ll:=emit_unicodestring_const(current_asmdata.asmlists[al_const],
|
|
strval,
|
|
def.encoding,
|
|
winlike);
|
|
|
|
{ Collect Windows widestrings that need initialization at startup.
|
|
Local initialized vars are excluded because they are initialized
|
|
at function entry instead. }
|
|
if winlike and
|
|
((tcsym.owner.symtablelevel<=main_program_level) or
|
|
(current_old_block_type=bt_const)) then
|
|
begin
|
|
if ll.ofs<>0 then
|
|
internalerror(2012051704);
|
|
current_asmdata.WideInits.Concat(
|
|
TTCInitItem.Create(tcsym,curoffset,ll.lab)
|
|
);
|
|
ll.lab:=nil;
|
|
ll.ofs:=0;
|
|
Include(tcsym.varoptions,vo_force_finalize);
|
|
end;
|
|
end;
|
|
list.concat(Tai_const.Create_sym_offset(ll.lab,ll.ofs));
|
|
end;
|
|
else
|
|
internalerror(200107081);
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure tasmlisttypedconstbuilder.tc_emit_orddef(def: torddef; var node: tnode);
|
|
var
|
|
intvalue: tconstexprint;
|
|
|
|
procedure do_error;
|
|
begin
|
|
if is_constnode(node) then
|
|
IncompatibleTypes(node.resultdef, def)
|
|
else if not(parse_generic) then
|
|
Message(parser_e_illegal_expression);
|
|
end;
|
|
|
|
begin
|
|
case def.ordtype of
|
|
pasbool8,
|
|
bool8bit :
|
|
begin
|
|
if is_constboolnode(node) then
|
|
list.concat(Tai_const.Create_8bit(byte(tordconstnode(node).value.svalue)))
|
|
else
|
|
do_error;
|
|
end;
|
|
pasbool16,
|
|
bool16bit :
|
|
begin
|
|
if is_constboolnode(node) then
|
|
list.concat(Tai_const.Create_16bit(word(tordconstnode(node).value.svalue)))
|
|
else
|
|
do_error;
|
|
end;
|
|
pasbool32,
|
|
bool32bit :
|
|
begin
|
|
if is_constboolnode(node) then
|
|
list.concat(Tai_const.Create_32bit(longint(tordconstnode(node).value.svalue)))
|
|
else
|
|
do_error;
|
|
end;
|
|
pasbool64,
|
|
bool64bit :
|
|
begin
|
|
if is_constboolnode(node) then
|
|
list.concat(Tai_const.Create_64bit(int64(tordconstnode(node).value.svalue)))
|
|
else
|
|
do_error;
|
|
end;
|
|
uchar :
|
|
begin
|
|
if is_constwidecharnode(node) then
|
|
inserttypeconv(node,cansichartype);
|
|
if is_constcharnode(node) or
|
|
((m_delphi in current_settings.modeswitches) and
|
|
is_constwidecharnode(node) and
|
|
(tordconstnode(node).value <= 255)) then
|
|
list.concat(Tai_const.Create_8bit(byte(tordconstnode(node).value.svalue)))
|
|
else
|
|
do_error;
|
|
end;
|
|
uwidechar :
|
|
begin
|
|
if is_constcharnode(node) then
|
|
inserttypeconv(node,cwidechartype);
|
|
if is_constwidecharnode(node) then
|
|
list.concat(Tai_const.Create_16bit(word(tordconstnode(node).value.svalue)))
|
|
else
|
|
do_error;
|
|
end;
|
|
s8bit,u8bit,
|
|
u16bit,s16bit,
|
|
s32bit,u32bit,
|
|
s64bit,u64bit :
|
|
begin
|
|
if is_constintnode(node) then
|
|
begin
|
|
testrange(def,tordconstnode(node).value,false,false);
|
|
case def.size of
|
|
1 :
|
|
list.concat(Tai_const.Create_8bit(byte(tordconstnode(node).value.svalue)));
|
|
2 :
|
|
list.concat(Tai_const.Create_16bit(word(tordconstnode(node).value.svalue)));
|
|
4 :
|
|
list.concat(Tai_const.Create_32bit(longint(tordconstnode(node).value.svalue)));
|
|
8 :
|
|
list.concat(Tai_const.Create_64bit(tordconstnode(node).value.svalue));
|
|
end;
|
|
end
|
|
else
|
|
do_error;
|
|
end;
|
|
scurrency:
|
|
begin
|
|
if is_constintnode(node) then
|
|
intvalue:=tordconstnode(node).value*10000
|
|
{ allow bootstrapping }
|
|
else if is_constrealnode(node) then
|
|
intvalue:=PInt64(@trealconstnode(node).value_currency)^
|
|
else
|
|
begin
|
|
intvalue:=0;
|
|
IncompatibleTypes(node.resultdef, def);
|
|
end;
|
|
list.concat(Tai_const.Create_64bit(intvalue));
|
|
end;
|
|
else
|
|
internalerror(200611052);
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure tasmlisttypedconstbuilder.tc_emit_floatdef(def: tfloatdef; var node: tnode);
|
|
var
|
|
value : bestreal;
|
|
begin
|
|
if is_constrealnode(node) then
|
|
value:=trealconstnode(node).value_real
|
|
else if is_constintnode(node) then
|
|
value:=tordconstnode(node).value
|
|
else if is_constnode(node) then
|
|
IncompatibleTypes(node.resultdef, def)
|
|
else
|
|
Message(parser_e_illegal_expression);
|
|
|
|
case def.floattype of
|
|
s32real :
|
|
list.concat(Tai_real_32bit.Create(ts32real(value)));
|
|
s64real :
|
|
{$ifdef ARM}
|
|
if is_double_hilo_swapped then
|
|
list.concat(Tai_real_64bit.Create_hiloswapped(ts64real(value)))
|
|
else
|
|
{$endif ARM}
|
|
list.concat(Tai_real_64bit.Create(ts64real(value)));
|
|
s80real :
|
|
list.concat(Tai_real_80bit.Create(value,s80floattype.size));
|
|
sc80real :
|
|
list.concat(Tai_real_80bit.Create(value,sc80floattype.size));
|
|
s64comp :
|
|
{ the round is necessary for native compilers where comp isn't a float }
|
|
list.concat(Tai_comp_64bit.Create(round(value)));
|
|
s64currency:
|
|
list.concat(Tai_comp_64bit.Create(round(value*10000)));
|
|
s128real:
|
|
list.concat(Tai_real_128bit.Create(value));
|
|
else
|
|
internalerror(200611053);
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure tasmlisttypedconstbuilder.tc_emit_classrefdef(def: tclassrefdef; var node: tnode);
|
|
begin
|
|
case node.nodetype of
|
|
loadvmtaddrn:
|
|
begin
|
|
if not Tobjectdef(tclassrefdef(node.resultdef).pointeddef).is_related(tobjectdef(def.pointeddef)) then
|
|
IncompatibleTypes(node.resultdef, def);
|
|
list.concat(Tai_const.Create_sym(current_asmdata.RefAsmSymbol(Tobjectdef(tclassrefdef(node.resultdef).pointeddef).vmt_mangledname)));
|
|
end;
|
|
niln:
|
|
list.concat(Tai_const.Create_sym(nil));
|
|
else if is_constnode(node) then
|
|
IncompatibleTypes(node.resultdef, def)
|
|
else
|
|
Message(parser_e_illegal_expression);
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure tasmlisttypedconstbuilder.tc_emit_pointerdef(def: tpointerdef; var node: tnode);
|
|
var
|
|
hp : tnode;
|
|
srsym : tsym;
|
|
pd : tprocdef;
|
|
ca : pchar;
|
|
pw : pcompilerwidestring;
|
|
i,len : longint;
|
|
base,
|
|
offset : aint;
|
|
v : Tconstexprint;
|
|
ll : tasmlabel;
|
|
varalign : shortint;
|
|
begin
|
|
{ remove equal typecasts for pointer/nil addresses }
|
|
if (node.nodetype=typeconvn) then
|
|
with Ttypeconvnode(node) do
|
|
if (left.nodetype in [addrn,niln]) and equal_defs(def,node.resultdef) then
|
|
begin
|
|
hp:=left;
|
|
left:=nil;
|
|
node.free;
|
|
node:=hp;
|
|
end;
|
|
{ allows horrible ofs(typeof(TButton)^) code !! }
|
|
if (node.nodetype=addrn) then
|
|
with Taddrnode(node) do
|
|
if left.nodetype=derefn then
|
|
begin
|
|
hp:=tderefnode(left).left;
|
|
tderefnode(left).left:=nil;
|
|
node.free;
|
|
node:=hp;
|
|
end;
|
|
{ const pointer ? }
|
|
if (node.nodetype = pointerconstn) then
|
|
begin
|
|
{$if sizeof(TConstPtrUInt)=8}
|
|
list.concat(Tai_const.Create_64bit(int64(tpointerconstnode(node).value)));
|
|
{$else}
|
|
{$if sizeof(TConstPtrUInt)=4}
|
|
list.concat(Tai_const.Create_32bit(longint(tpointerconstnode(node).value)));
|
|
{$else}
|
|
internalerror(200404122);
|
|
{$endif} {$endif}
|
|
end
|
|
{ nil pointer ? }
|
|
else if node.nodetype=niln then
|
|
list.concat(Tai_const.Create_sym(nil))
|
|
{ maybe pchar ? }
|
|
else
|
|
if is_char(def.pointeddef) and
|
|
(node.nodetype<>addrn) then
|
|
begin
|
|
current_asmdata.getdatalabel(ll);
|
|
list.concat(Tai_const.Create_sym(ll));
|
|
if node.nodetype=stringconstn then
|
|
varalign:=size_2_align(tstringconstnode(node).len)
|
|
else
|
|
varalign:=0;
|
|
varalign:=const_align(varalign);
|
|
new_section(current_asmdata.asmlists[al_const], sec_rodata, ll.name, varalign);
|
|
current_asmdata.asmlists[al_const].concat(Tai_label.Create(ll));
|
|
if node.nodetype=stringconstn then
|
|
begin
|
|
len:=tstringconstnode(node).len;
|
|
{ For tp7 the maximum lentgh can be 255 }
|
|
if (m_tp7 in current_settings.modeswitches) and
|
|
(len>255) then
|
|
len:=255;
|
|
getmem(ca,len+2);
|
|
move(tstringconstnode(node).value_str^,ca^,len+1);
|
|
current_asmdata.asmlists[al_const].concat(Tai_string.Create_pchar(ca,len+1));
|
|
end
|
|
else
|
|
if is_constcharnode(node) then
|
|
current_asmdata.asmlists[al_const].concat(Tai_string.Create(char(byte(tordconstnode(node).value.svalue))+#0))
|
|
else
|
|
IncompatibleTypes(node.resultdef, def);
|
|
end
|
|
{ maybe pwidechar ? }
|
|
else
|
|
if is_widechar(def.pointeddef) and
|
|
(node.nodetype<>addrn) then
|
|
begin
|
|
current_asmdata.getdatalabel(ll);
|
|
list.concat(Tai_const.Create_sym(ll));
|
|
current_asmdata.asmlists[al_typedconsts].concat(tai_align.create(const_align(sizeof(pint))));
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_label.Create(ll));
|
|
if (node.nodetype in [stringconstn,ordconstn]) then
|
|
begin
|
|
{ convert to unicodestring stringconstn }
|
|
inserttypeconv(node,cunicodestringtype);
|
|
if (node.nodetype=stringconstn) and
|
|
(tstringconstnode(node).cst_type in [cst_widestring,cst_unicodestring]) then
|
|
begin
|
|
pw:=pcompilerwidestring(tstringconstnode(node).value_str);
|
|
for i:=0 to tstringconstnode(node).len-1 do
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_const.Create_16bit(pw^.data[i]));
|
|
{ ending #0 }
|
|
current_asmdata.asmlists[al_typedconsts].concat(Tai_const.Create_16bit(0))
|
|
end;
|
|
end
|
|
else
|
|
IncompatibleTypes(node.resultdef, def);
|
|
end
|
|
else
|
|
if (node.nodetype=addrn) or
|
|
is_proc2procvar_load(node,pd) then
|
|
begin
|
|
{ insert typeconv }
|
|
inserttypeconv(node,def);
|
|
hp:=node;
|
|
while assigned(hp) and (hp.nodetype in [addrn,typeconvn,subscriptn,vecn]) do
|
|
hp:=tunarynode(hp).left;
|
|
if (hp.nodetype=loadn) then
|
|
begin
|
|
hp:=node;
|
|
offset:=0;
|
|
while assigned(hp) and (hp.nodetype<>loadn) do
|
|
begin
|
|
case hp.nodetype of
|
|
vecn :
|
|
begin
|
|
case tvecnode(hp).left.resultdef.typ of
|
|
stringdef :
|
|
begin
|
|
{ this seems OK for shortstring and ansistrings PM }
|
|
{ it is wrong for widestrings !! }
|
|
len:=1;
|
|
base:=0;
|
|
end;
|
|
arraydef :
|
|
begin
|
|
if not is_packed_array(tvecnode(hp).left.resultdef) then
|
|
begin
|
|
len:=tarraydef(tvecnode(hp).left.resultdef).elesize;
|
|
base:=tarraydef(tvecnode(hp).left.resultdef).lowrange;
|
|
end
|
|
else
|
|
begin
|
|
Message(parser_e_packed_dynamic_open_array);
|
|
len:=1;
|
|
base:=0;
|
|
end;
|
|
end
|
|
else
|
|
Message(parser_e_illegal_expression);
|
|
end;
|
|
if is_constintnode(tvecnode(hp).right) then
|
|
begin
|
|
{Prevent overflow.}
|
|
v:=get_ordinal_value(tvecnode(hp).right)-base;
|
|
if (v<int64(low(offset))) or (v>int64(high(offset))) then
|
|
message3(type_e_range_check_error_bounds,tostr(v),tostr(low(offset)),tostr(high(offset)));
|
|
if high(offset)-offset div len>v then
|
|
inc(offset,len*v.svalue)
|
|
else
|
|
message3(type_e_range_check_error_bounds,tostr(v),'0',tostr(high(offset)-offset div len))
|
|
end
|
|
else
|
|
Message(parser_e_illegal_expression);
|
|
end;
|
|
subscriptn :
|
|
inc(offset,tsubscriptnode(hp).vs.fieldoffset);
|
|
typeconvn :
|
|
begin
|
|
if not(ttypeconvnode(hp).convtype in [tc_equal,tc_proc_2_procvar]) then
|
|
Message(parser_e_illegal_expression);
|
|
end;
|
|
addrn :
|
|
;
|
|
else
|
|
Message(parser_e_illegal_expression);
|
|
end;
|
|
hp:=tunarynode(hp).left;
|
|
end;
|
|
srsym:=tloadnode(hp).symtableentry;
|
|
case srsym.typ of
|
|
procsym :
|
|
begin
|
|
pd:=tprocdef(tprocsym(srsym).ProcdefList[0]);
|
|
if Tprocsym(srsym).ProcdefList.Count>1 then
|
|
Message(parser_e_no_overloaded_procvars);
|
|
if po_abstractmethod in pd.procoptions then
|
|
Message(type_e_cant_take_address_of_abstract_method)
|
|
else
|
|
list.concat(Tai_const.Createname(pd.mangledname,offset));
|
|
end;
|
|
staticvarsym :
|
|
list.concat(Tai_const.Createname(tstaticvarsym(srsym).mangledname,offset));
|
|
labelsym :
|
|
list.concat(Tai_const.Createname(tlabelsym(srsym).mangledname,offset));
|
|
constsym :
|
|
if tconstsym(srsym).consttyp=constresourcestring then
|
|
list.concat(Tai_const.Createname(make_mangledname('RESSTR',tconstsym(srsym).owner,tconstsym(srsym).name),sizeof(pint)))
|
|
else
|
|
Message(type_e_variable_id_expected);
|
|
else
|
|
Message(type_e_variable_id_expected);
|
|
end;
|
|
end
|
|
else
|
|
Message(parser_e_illegal_expression);
|
|
end
|
|
else
|
|
{ allow typeof(Object type)}
|
|
if (node.nodetype=inlinen) and
|
|
(tinlinenode(node).inlinenumber=in_typeof_x) then
|
|
begin
|
|
if (tinlinenode(node).left.nodetype=typen) then
|
|
begin
|
|
list.concat(Tai_const.createname(
|
|
tobjectdef(tinlinenode(node).left.resultdef).vmt_mangledname,0));
|
|
end
|
|
else
|
|
Message(parser_e_illegal_expression);
|
|
end
|
|
else
|
|
Message(parser_e_illegal_expression);
|
|
end;
|
|
|
|
|
|
procedure tasmlisttypedconstbuilder.tc_emit_setdef(def: tsetdef; var node: tnode);
|
|
type
|
|
setbytes = array[0..31] of byte;
|
|
Psetbytes = ^setbytes;
|
|
var
|
|
i: longint;
|
|
begin
|
|
if node.nodetype=setconstn then
|
|
begin
|
|
{ be sure to convert to the correct result, else
|
|
it can generate smallset data instead of normalset (PFV) }
|
|
inserttypeconv(node,def);
|
|
{ we only allow const sets }
|
|
if (node.nodetype<>setconstn) or
|
|
assigned(tsetconstnode(node).left) then
|
|
Message(parser_e_illegal_expression)
|
|
else
|
|
begin
|
|
tsetconstnode(node).adjustforsetbase;
|
|
{ this writing is endian-dependant }
|
|
if source_info.endian = target_info.endian then
|
|
begin
|
|
for i:=0 to node.resultdef.size-1 do
|
|
list.concat(tai_const.create_8bit(Psetbytes(tsetconstnode(node).value_set)^[i]));
|
|
end
|
|
else
|
|
begin
|
|
for i:=0 to node.resultdef.size-1 do
|
|
list.concat(tai_const.create_8bit(reverse_byte(Psetbytes(tsetconstnode(node).value_set)^[i])));
|
|
end;
|
|
end;
|
|
end
|
|
else
|
|
Message(parser_e_illegal_expression);
|
|
end;
|
|
|
|
|
|
procedure tasmlisttypedconstbuilder.tc_emit_enumdef(def: tenumdef; var node: tnode);
|
|
begin
|
|
if node.nodetype=ordconstn then
|
|
begin
|
|
if equal_defs(node.resultdef,def) or
|
|
is_subequal(node.resultdef,def) then
|
|
begin
|
|
case longint(node.resultdef.size) of
|
|
1 : list.concat(Tai_const.Create_8bit(Byte(tordconstnode(node).value.svalue)));
|
|
2 : list.concat(Tai_const.Create_16bit(Word(tordconstnode(node).value.svalue)));
|
|
4 : list.concat(Tai_const.Create_32bit(Longint(tordconstnode(node).value.svalue)));
|
|
end;
|
|
end
|
|
else
|
|
IncompatibleTypes(node.resultdef,def);
|
|
end
|
|
else
|
|
Message(parser_e_illegal_expression);
|
|
end;
|
|
|
|
|
|
{ parse a single constant and add it to the packed const info }
|
|
{ represented by curval etc (see explanation of bitpackval for }
|
|
{ what the different parameters mean) }
|
|
function tasmlisttypedconstbuilder.parse_single_packed_const(def: tdef; var bp: tbitpackedval): boolean;
|
|
var
|
|
node: tnode;
|
|
begin
|
|
result:=true;
|
|
node:=comp_expr(true,false);
|
|
if (node.nodetype <> ordconstn) or
|
|
(not equal_defs(node.resultdef,def) and
|
|
not is_subequal(node.resultdef,def)) then
|
|
begin
|
|
node.free;
|
|
incompatibletypes(node.resultdef,def);
|
|
consume_all_until(_SEMICOLON);
|
|
result:=false;
|
|
exit;
|
|
end;
|
|
if (Tordconstnode(node).value<qword(low(Aword))) or (Tordconstnode(node).value>qword(high(Aword))) then
|
|
message3(type_e_range_check_error_bounds,tostr(Tordconstnode(node).value),tostr(low(Aword)),tostr(high(Aword)))
|
|
else
|
|
bitpackval(Tordconstnode(node).value.uvalue,bp);
|
|
if (bp.curbitoffset>=AIntBits) then
|
|
flush_packed_value(list,bp);
|
|
node.free;
|
|
end;
|
|
|
|
|
|
procedure tasmlisttypedconstbuilder.parse_arraydef(def:tarraydef);
|
|
var
|
|
n : tnode;
|
|
i : longint;
|
|
len : asizeint;
|
|
ch : array[0..1] of char;
|
|
ca : pbyte;
|
|
int_const: tai_const;
|
|
char_size: integer;
|
|
oldoffset: asizeint;
|
|
begin
|
|
{ dynamic array nil }
|
|
if is_dynamic_array(def) then
|
|
begin
|
|
{ Only allow nil initialization }
|
|
consume(_NIL);
|
|
list.concat(Tai_const.Create_sym(nil));
|
|
end
|
|
{ packed array constant }
|
|
else if is_packed_array(def) and
|
|
((def.elepackedbitsize mod 8 <> 0) or
|
|
not ispowerof2(def.elepackedbitsize div 8,i)) then
|
|
begin
|
|
parse_packed_array_def(def);
|
|
end
|
|
{ normal array const between brackets }
|
|
else if try_to_consume(_LKLAMMER) then
|
|
begin
|
|
oldoffset:=curoffset;
|
|
curoffset:=0;
|
|
for i:=def.lowrange to def.highrange-1 do
|
|
begin
|
|
read_typed_const_data(def.elementdef);
|
|
Inc(curoffset,def.elementdef.size);
|
|
if token=_RKLAMMER then
|
|
begin
|
|
Message1(parser_e_more_array_elements_expected,tostr(def.highrange-i));
|
|
consume(_RKLAMMER);
|
|
exit;
|
|
end
|
|
else
|
|
consume(_COMMA);
|
|
end;
|
|
read_typed_const_data(def.elementdef);
|
|
consume(_RKLAMMER);
|
|
curoffset:=oldoffset;
|
|
end
|
|
{ if array of char then we allow also a string }
|
|
else if is_anychar(def.elementdef) then
|
|
begin
|
|
char_size:=def.elementdef.size;
|
|
n:=comp_expr(true,false);
|
|
if n.nodetype=stringconstn then
|
|
begin
|
|
len:=tstringconstnode(n).len;
|
|
case char_size of
|
|
1:
|
|
begin
|
|
if (tstringconstnode(n).cst_type in [cst_unicodestring,cst_widestring]) then
|
|
inserttypeconv(n,getansistringdef);
|
|
if n.nodetype<>stringconstn then
|
|
internalerror(2010033003);
|
|
ca:=pointer(tstringconstnode(n).value_str);
|
|
end;
|
|
2:
|
|
begin
|
|
inserttypeconv(n,cunicodestringtype);
|
|
if n.nodetype<>stringconstn then
|
|
internalerror(2010033003);
|
|
ca:=pointer(pcompilerwidestring(tstringconstnode(n).value_str)^.data)
|
|
end;
|
|
else
|
|
internalerror(2010033005);
|
|
end;
|
|
{ For tp7 the maximum lentgh can be 255 }
|
|
if (m_tp7 in current_settings.modeswitches) and
|
|
(len>255) then
|
|
len:=255;
|
|
end
|
|
else if is_constcharnode(n) then
|
|
begin
|
|
case char_size of
|
|
1:
|
|
ch[0]:=chr(tordconstnode(n).value.uvalue and $ff);
|
|
2:
|
|
begin
|
|
inserttypeconv(n,cwidechartype);
|
|
if not is_constwidecharnode(n) then
|
|
internalerror(2010033001);
|
|
widechar(ch):=widechar(tordconstnode(n).value.uvalue and $ffff);
|
|
end;
|
|
else
|
|
internalerror(2010033002);
|
|
end;
|
|
ca:=@ch;
|
|
len:=1;
|
|
end
|
|
else if is_constwidecharnode(n) and (current_settings.sourcecodepage<>CP_UTF8) then
|
|
begin
|
|
case char_size of
|
|
1:
|
|
begin
|
|
inserttypeconv(n,cansichartype);
|
|
if not is_constcharnode(n) then
|
|
internalerror(2010033001);
|
|
ch[0]:=chr(tordconstnode(n).value.uvalue and $ff);
|
|
end;
|
|
2:
|
|
widechar(ch):=widechar(tordconstnode(n).value.uvalue and $ffff);
|
|
else
|
|
internalerror(2010033002);
|
|
end;
|
|
ca:=@ch;
|
|
len:=1;
|
|
end
|
|
else
|
|
begin
|
|
Message(parser_e_illegal_expression);
|
|
len:=0;
|
|
end;
|
|
if len>(def.highrange-def.lowrange+1) then
|
|
Message(parser_e_string_larger_array);
|
|
for i:=0 to def.highrange-def.lowrange do
|
|
begin
|
|
if i<len then
|
|
begin
|
|
case char_size of
|
|
1:
|
|
int_const:=Tai_const.Create_char(char_size,pbyte(ca)^);
|
|
2:
|
|
int_const:=Tai_const.Create_char(char_size,pword(ca)^);
|
|
else
|
|
internalerror(2010033004);
|
|
end;
|
|
inc(ca, char_size);
|
|
end
|
|
else
|
|
{Fill the remaining positions with #0.}
|
|
int_const:=Tai_const.Create_char(char_size,0);
|
|
list.concat(int_const)
|
|
end;
|
|
n.free;
|
|
end
|
|
else
|
|
begin
|
|
{ we want the ( }
|
|
consume(_LKLAMMER);
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure tasmlisttypedconstbuilder.parse_procvardef(def:tprocvardef);
|
|
var
|
|
tmpn,n : tnode;
|
|
pd : tprocdef;
|
|
begin
|
|
{ Procvars and pointers are no longer compatible. }
|
|
{ under tp: =nil or =var under fpc: =nil or =@var }
|
|
if try_to_consume(_NIL) then
|
|
begin
|
|
list.concat(Tai_const.Create_sym(nil));
|
|
if not def.is_addressonly then
|
|
list.concat(Tai_const.Create_sym(nil));
|
|
exit;
|
|
end;
|
|
{ you can't assign a value other than NIL to a typed constant }
|
|
{ which is a "procedure of object", because this also requires }
|
|
{ address of an object/class instance, which is not known at }
|
|
{ compile time (JM) }
|
|
if (po_methodpointer in def.procoptions) then
|
|
Message(parser_e_no_procvarobj_const);
|
|
{ parse the rest too, so we can continue with error checking }
|
|
getprocvardef:=def;
|
|
n:=comp_expr(true,false);
|
|
getprocvardef:=nil;
|
|
if codegenerror then
|
|
begin
|
|
n.free;
|
|
exit;
|
|
end;
|
|
{ let type conversion check everything needed }
|
|
inserttypeconv(n,def);
|
|
if codegenerror then
|
|
begin
|
|
n.free;
|
|
exit;
|
|
end;
|
|
{ remove typeconvs, that will normally insert a lea
|
|
instruction which is not necessary for us }
|
|
while n.nodetype=typeconvn do
|
|
begin
|
|
tmpn:=ttypeconvnode(n).left;
|
|
ttypeconvnode(n).left:=nil;
|
|
n.free;
|
|
n:=tmpn;
|
|
end;
|
|
{ remove addrn which we also don't need here }
|
|
if n.nodetype=addrn then
|
|
begin
|
|
tmpn:=taddrnode(n).left;
|
|
taddrnode(n).left:=nil;
|
|
n.free;
|
|
n:=tmpn;
|
|
end;
|
|
{ we now need to have a loadn with a procsym }
|
|
if (n.nodetype=loadn) and
|
|
(tloadnode(n).symtableentry.typ=procsym) then
|
|
begin
|
|
pd:=tloadnode(n).procdef;
|
|
list.concat(Tai_const.createname(pd.mangledname,0));
|
|
{ nested procvar typed consts can only be initialised with nil
|
|
(checked above) or with a global procedure (checked here),
|
|
because in other cases we need a valid frame pointer }
|
|
if is_nested_pd(def) then
|
|
begin
|
|
if is_nested_pd(pd) then
|
|
Message(parser_e_no_procvarnested_const);
|
|
list.concat(Tai_const.Create_sym(nil));
|
|
end
|
|
end
|
|
else if n.nodetype=pointerconstn then
|
|
list.concat(Tai_const.Create_pint(tpointerconstnode(n).value))
|
|
else
|
|
Message(parser_e_illegal_expression);
|
|
n.free;
|
|
end;
|
|
|
|
|
|
procedure tasmlisttypedconstbuilder.parse_recorddef(def:trecorddef);
|
|
var
|
|
n : tnode;
|
|
symidx : longint;
|
|
recsym,
|
|
srsym : tsym;
|
|
hs : string;
|
|
sorg,s : TIDString;
|
|
tmpguid : tguid;
|
|
recoffset,
|
|
fillbytes : aint;
|
|
bp : tbitpackedval;
|
|
error,
|
|
is_packed: boolean;
|
|
startoffset: aint;
|
|
|
|
procedure handle_stringconstn;
|
|
var
|
|
i : longint;
|
|
begin
|
|
hs:=strpas(tstringconstnode(n).value_str);
|
|
if string2guid(hs,tmpguid) then
|
|
begin
|
|
list.concat(Tai_const.Create_32bit(longint(tmpguid.D1)));
|
|
list.concat(Tai_const.Create_16bit(tmpguid.D2));
|
|
list.concat(Tai_const.Create_16bit(tmpguid.D3));
|
|
for i:=Low(tmpguid.D4) to High(tmpguid.D4) do
|
|
list.concat(Tai_const.Create_8bit(tmpguid.D4[i]));
|
|
end
|
|
else
|
|
Message(parser_e_improper_guid_syntax);
|
|
end;
|
|
|
|
var
|
|
i : longint;
|
|
SymList:TFPHashObjectList;
|
|
begin
|
|
{ GUID }
|
|
if (def=rec_tguid) and (token=_ID) then
|
|
begin
|
|
n:=comp_expr(true,false);
|
|
if n.nodetype=stringconstn then
|
|
handle_stringconstn
|
|
else
|
|
begin
|
|
inserttypeconv(n,rec_tguid);
|
|
if n.nodetype=guidconstn then
|
|
begin
|
|
tmpguid:=tguidconstnode(n).value;
|
|
list.concat(Tai_const.Create_32bit(longint(tmpguid.D1)));
|
|
list.concat(Tai_const.Create_16bit(tmpguid.D2));
|
|
list.concat(Tai_const.Create_16bit(tmpguid.D3));
|
|
for i:=Low(tmpguid.D4) to High(tmpguid.D4) do
|
|
list.concat(Tai_const.Create_8bit(tmpguid.D4[i]));
|
|
end
|
|
else
|
|
Message(parser_e_illegal_expression);
|
|
end;
|
|
n.free;
|
|
exit;
|
|
end;
|
|
if (def=rec_tguid) and ((token=_CSTRING) or (token=_CCHAR)) then
|
|
begin
|
|
n:=comp_expr(true,false);
|
|
inserttypeconv(n,cshortstringtype);
|
|
if n.nodetype=stringconstn then
|
|
handle_stringconstn
|
|
else
|
|
Message(parser_e_illegal_expression);
|
|
n.free;
|
|
exit;
|
|
end;
|
|
{ bitpacked record? }
|
|
is_packed:=is_packed_record_or_object(def);
|
|
if (is_packed) then
|
|
begin
|
|
{ loadbitsize = 8, bitpacked records are always padded to }
|
|
{ a multiple of a byte. packedbitsize will be set separately }
|
|
{ for each field }
|
|
initbitpackval(bp,0);
|
|
bp.loadbitsize:=8;
|
|
end;
|
|
{ normal record }
|
|
consume(_LKLAMMER);
|
|
recoffset:=0;
|
|
sorg:='';
|
|
symidx:=0;
|
|
symlist:=def.symtable.SymList;
|
|
srsym:=get_next_varsym(def,symlist,symidx);
|
|
recsym := nil;
|
|
startoffset:=curoffset;
|
|
while token<>_RKLAMMER do
|
|
begin
|
|
s:=pattern;
|
|
sorg:=orgpattern;
|
|
consume(_ID);
|
|
consume(_COLON);
|
|
error := false;
|
|
recsym := tsym(def.symtable.Find(s));
|
|
if not assigned(recsym) then
|
|
begin
|
|
Message1(sym_e_illegal_field,sorg);
|
|
error := true;
|
|
end;
|
|
if (not error) and
|
|
(not assigned(srsym) or
|
|
(s <> srsym.name)) then
|
|
{ possible variant record (JM) }
|
|
begin
|
|
{ All parts of a variant start at the same offset }
|
|
{ Also allow jumping from one variant part to another, }
|
|
{ as long as the offsets match }
|
|
if (assigned(srsym) and
|
|
(tfieldvarsym(recsym).fieldoffset = tfieldvarsym(srsym).fieldoffset)) or
|
|
{ srsym is not assigned after parsing w2 in the }
|
|
{ typed const in the next example: }
|
|
{ type tr = record case byte of }
|
|
{ 1: (l1,l2: dword); }
|
|
{ 2: (w1,w2: word); }
|
|
{ end; }
|
|
{ const r: tr = (w1:1;w2:1;l2:5); }
|
|
(tfieldvarsym(recsym).fieldoffset = recoffset) then
|
|
begin
|
|
srsym:=recsym;
|
|
{ symidx should contain the next symbol id to search }
|
|
symidx:=SymList.indexof(srsym)+1;
|
|
end
|
|
{ going backwards isn't allowed in any mode }
|
|
else if (tfieldvarsym(recsym).fieldoffset<recoffset) then
|
|
begin
|
|
Message(parser_e_invalid_record_const);
|
|
error := true;
|
|
end
|
|
{ Delphi allows you to skip fields }
|
|
else if (m_delphi in current_settings.modeswitches) then
|
|
begin
|
|
Message1(parser_w_skipped_fields_before,sorg);
|
|
srsym := recsym;
|
|
end
|
|
{ FPC and TP don't }
|
|
else
|
|
begin
|
|
Message1(parser_e_skipped_fields_before,sorg);
|
|
error := true;
|
|
end;
|
|
end;
|
|
if error then
|
|
consume_all_until(_SEMICOLON)
|
|
else
|
|
begin
|
|
{ if needed fill (alignment) }
|
|
if tfieldvarsym(srsym).fieldoffset>recoffset then
|
|
begin
|
|
if not(is_packed) then
|
|
fillbytes:=tfieldvarsym(srsym).fieldoffset-recoffset
|
|
else
|
|
begin
|
|
flush_packed_value(list,bp);
|
|
{ curoffset is now aligned to the next byte }
|
|
recoffset:=align(recoffset,8);
|
|
{ offsets are in bits in this case }
|
|
fillbytes:=(tfieldvarsym(srsym).fieldoffset-recoffset) div 8;
|
|
end;
|
|
for i:=1 to fillbytes do
|
|
list.concat(Tai_const.Create_8bit(0))
|
|
end;
|
|
|
|
{ new position }
|
|
recoffset:=tfieldvarsym(srsym).fieldoffset;
|
|
if not(is_packed) then
|
|
inc(recoffset,tfieldvarsym(srsym).vardef.size)
|
|
else
|
|
inc(recoffset,tfieldvarsym(srsym).vardef.packedbitsize);
|
|
|
|
{ read the data }
|
|
if not(is_packed) or
|
|
{ only orddefs and enumdefs are bitpacked, as in gcc/gpc }
|
|
not(tfieldvarsym(srsym).vardef.typ in [orddef,enumdef]) then
|
|
begin
|
|
if is_packed then
|
|
begin
|
|
flush_packed_value(list,bp);
|
|
recoffset:=align(recoffset,8);
|
|
end;
|
|
curoffset:=startoffset+tfieldvarsym(srsym).fieldoffset;
|
|
read_typed_const_data(tfieldvarsym(srsym).vardef);
|
|
end
|
|
else
|
|
begin
|
|
bp.packedbitsize:=tfieldvarsym(srsym).vardef.packedbitsize;
|
|
parse_single_packed_const(tfieldvarsym(srsym).vardef,bp);
|
|
end;
|
|
|
|
{ keep previous field for checking whether whole }
|
|
{ record was initialized (JM) }
|
|
recsym := srsym;
|
|
{ goto next field }
|
|
srsym:=get_next_varsym(def,SymList,symidx);
|
|
|
|
if token=_SEMICOLON then
|
|
consume(_SEMICOLON)
|
|
else if (token=_COMMA) and (m_mac in current_settings.modeswitches) then
|
|
consume(_COMMA)
|
|
else
|
|
break;
|
|
end;
|
|
end;
|
|
curoffset:=startoffset;
|
|
|
|
{ are there any fields left, but don't complain if there only
|
|
come other variant parts after the last initialized field }
|
|
if assigned(srsym) and
|
|
(
|
|
(recsym=nil) or
|
|
(tfieldvarsym(srsym).fieldoffset > tfieldvarsym(recsym).fieldoffset)
|
|
) then
|
|
Message1(parser_w_skipped_fields_after,sorg);
|
|
|
|
if not(is_packed) then
|
|
fillbytes:=def.size-recoffset
|
|
else
|
|
begin
|
|
flush_packed_value(list,bp);
|
|
recoffset:=align(recoffset,8);
|
|
fillbytes:=def.size-(recoffset div 8);
|
|
end;
|
|
for i:=1 to fillbytes do
|
|
list.concat(Tai_const.Create_8bit(0));
|
|
|
|
consume(_RKLAMMER);
|
|
end;
|
|
|
|
|
|
procedure tasmlisttypedconstbuilder.parse_objectdef(def:tobjectdef);
|
|
var
|
|
n : tnode;
|
|
i : longint;
|
|
obj : tobjectdef;
|
|
srsym : tsym;
|
|
st : tsymtable;
|
|
objoffset : aint;
|
|
s,sorg : TIDString;
|
|
vmtwritten : boolean;
|
|
startoffset:aint;
|
|
begin
|
|
{ no support for packed object }
|
|
if is_packed_record_or_object(def) then
|
|
begin
|
|
Message(type_e_no_const_packed_record);
|
|
exit;
|
|
end;
|
|
|
|
{ only allow nil for implicit pointer object types }
|
|
if is_implicit_pointer_object_type(def) then
|
|
begin
|
|
n:=comp_expr(true,false);
|
|
if n.nodetype<>niln then
|
|
begin
|
|
Message(parser_e_type_const_not_possible);
|
|
consume_all_until(_SEMICOLON);
|
|
end
|
|
else
|
|
list.concat(Tai_const.Create_sym(nil));
|
|
n.free;
|
|
exit;
|
|
end;
|
|
|
|
{ for objects we allow it only if it doesn't contain a vmt }
|
|
if (oo_has_vmt in def.objectoptions) and
|
|
(m_fpc in current_settings.modeswitches) then
|
|
begin
|
|
Message(parser_e_type_object_constants);
|
|
exit;
|
|
end;
|
|
|
|
consume(_LKLAMMER);
|
|
startoffset:=curoffset;
|
|
objoffset:=0;
|
|
vmtwritten:=false;
|
|
while token<>_RKLAMMER do
|
|
begin
|
|
s:=pattern;
|
|
sorg:=orgpattern;
|
|
consume(_ID);
|
|
consume(_COLON);
|
|
srsym:=nil;
|
|
obj:=tobjectdef(def);
|
|
st:=obj.symtable;
|
|
while (srsym=nil) and assigned(st) do
|
|
begin
|
|
srsym:=tsym(st.Find(s));
|
|
if assigned(obj) then
|
|
obj:=obj.childof;
|
|
if assigned(obj) then
|
|
st:=obj.symtable
|
|
else
|
|
st:=nil;
|
|
end;
|
|
|
|
if (srsym=nil) or
|
|
(srsym.typ<>fieldvarsym) then
|
|
begin
|
|
if (srsym=nil) then
|
|
Message1(sym_e_id_not_found,sorg)
|
|
else
|
|
Message1(sym_e_illegal_field,sorg);
|
|
consume_all_until(_RKLAMMER);
|
|
break;
|
|
end
|
|
else
|
|
with tfieldvarsym(srsym) do
|
|
begin
|
|
{ check position }
|
|
if fieldoffset<objoffset then
|
|
message(parser_e_invalid_record_const);
|
|
|
|
{ check in VMT needs to be added for TP mode }
|
|
if not(vmtwritten) and
|
|
not(m_fpc in current_settings.modeswitches) and
|
|
(oo_has_vmt in def.objectoptions) and
|
|
(def.vmt_offset<fieldoffset) then
|
|
begin
|
|
for i:=1 to def.vmt_offset-objoffset do
|
|
list.concat(tai_const.create_8bit(0));
|
|
list.concat(tai_const.createname(def.vmt_mangledname,0));
|
|
{ this is more general }
|
|
objoffset:=def.vmt_offset + sizeof(pint);
|
|
vmtwritten:=true;
|
|
end;
|
|
|
|
{ if needed fill }
|
|
if fieldoffset>objoffset then
|
|
for i:=1 to fieldoffset-objoffset do
|
|
list.concat(Tai_const.Create_8bit(0));
|
|
|
|
{ new position }
|
|
objoffset:=fieldoffset+vardef.size;
|
|
|
|
{ read the data }
|
|
curoffset:=startoffset+fieldoffset;
|
|
read_typed_const_data(vardef);
|
|
|
|
if not try_to_consume(_SEMICOLON) then
|
|
break;
|
|
end;
|
|
end;
|
|
curoffset:=startoffset;
|
|
if not(m_fpc in current_settings.modeswitches) and
|
|
(oo_has_vmt in def.objectoptions) and
|
|
(def.vmt_offset>=objoffset) then
|
|
begin
|
|
for i:=1 to def.vmt_offset-objoffset do
|
|
list.concat(tai_const.create_8bit(0));
|
|
list.concat(tai_const.createname(def.vmt_mangledname,0));
|
|
{ this is more general }
|
|
objoffset:=def.vmt_offset + sizeof(pint);
|
|
end;
|
|
for i:=1 to def.size-objoffset do
|
|
list.concat(Tai_const.Create_8bit(0));
|
|
consume(_RKLAMMER);
|
|
end;
|
|
|
|
|
|
function tasmlisttypedconstbuilder.parse_into_asmlist: tasmlist;
|
|
begin
|
|
read_typed_const_data(tcsym.vardef);
|
|
result:=list;
|
|
end;
|
|
|
|
|
|
{ tnodetreetypedconstbuilder }
|
|
|
|
procedure tnodetreetypedconstbuilder.parse_arraydef(def: tarraydef);
|
|
var
|
|
n : tnode;
|
|
i : longint;
|
|
orgbase: tnode;
|
|
begin
|
|
{ dynamic array nil }
|
|
if is_dynamic_array(def) then
|
|
begin
|
|
{ Only allow nil initialization }
|
|
consume(_NIL);
|
|
addstatement(statmnt,cassignmentnode.create_internal(basenode,cnilnode.create));
|
|
basenode:=nil;
|
|
end
|
|
{ array const between brackets }
|
|
else if try_to_consume(_LKLAMMER) then
|
|
begin
|
|
orgbase:=basenode;
|
|
for i:=def.lowrange to def.highrange-1 do
|
|
begin
|
|
basenode:=cvecnode.create(orgbase.getcopy,ctypeconvnode.create_explicit(genintconstnode(i),tarraydef(def).rangedef));
|
|
read_typed_const_data(def.elementdef);
|
|
if token=_RKLAMMER then
|
|
begin
|
|
Message1(parser_e_more_array_elements_expected,tostr(def.highrange-i));
|
|
consume(_RKLAMMER);
|
|
exit;
|
|
end
|
|
else
|
|
consume(_COMMA);
|
|
end;
|
|
basenode:=cvecnode.create(orgbase,ctypeconvnode.create_explicit(genintconstnode(def.highrange),tarraydef(def).rangedef));
|
|
read_typed_const_data(def.elementdef);
|
|
consume(_RKLAMMER);
|
|
end
|
|
{ if array of char then we allow also a string }
|
|
else if is_anychar(def.elementdef) then
|
|
begin
|
|
n:=comp_expr(true,false);
|
|
addstatement(statmnt,cassignmentnode.create_internal(basenode,n));
|
|
basenode:=nil;
|
|
end
|
|
else
|
|
begin
|
|
{ we want the ( }
|
|
consume(_LKLAMMER);
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure tnodetreetypedconstbuilder.parse_procvardef(def: tprocvardef);
|
|
begin
|
|
addstatement(statmnt,cassignmentnode.create_internal(basenode,comp_expr(true,false)));
|
|
basenode:=nil;
|
|
end;
|
|
|
|
|
|
procedure tnodetreetypedconstbuilder.parse_recorddef(def: trecorddef);
|
|
var
|
|
n,n2 : tnode;
|
|
SymList:TFPHashObjectList;
|
|
orgbasenode : tnode;
|
|
symidx : longint;
|
|
recsym,
|
|
srsym : tsym;
|
|
sorg,s : TIDString;
|
|
recoffset : aint;
|
|
error,
|
|
is_packed: boolean;
|
|
|
|
procedure handle_stringconstn;
|
|
begin
|
|
addstatement(statmnt,cassignmentnode.create_internal(basenode,n));
|
|
basenode:=nil;
|
|
n:=nil;
|
|
end;
|
|
|
|
begin
|
|
{ GUID }
|
|
if (def=rec_tguid) and (token=_ID) then
|
|
begin
|
|
n:=comp_expr(true,false);
|
|
if n.nodetype=stringconstn then
|
|
handle_stringconstn
|
|
else
|
|
begin
|
|
inserttypeconv(n,rec_tguid);
|
|
if n.nodetype=guidconstn then
|
|
begin
|
|
n2:=cstringconstnode.createstr(guid2string(tguidconstnode(n).value));
|
|
n.free;
|
|
n:=n2;
|
|
handle_stringconstn;
|
|
end
|
|
else
|
|
Message(parser_e_illegal_expression);
|
|
end;
|
|
n.free;
|
|
exit;
|
|
end;
|
|
if (def=rec_tguid) and ((token=_CSTRING) or (token=_CCHAR)) then
|
|
begin
|
|
n:=comp_expr(true,false);
|
|
inserttypeconv(n,cshortstringtype);
|
|
if n.nodetype=stringconstn then
|
|
handle_stringconstn
|
|
else
|
|
Message(parser_e_illegal_expression);
|
|
n.free;
|
|
exit;
|
|
end;
|
|
{ bitpacked record? }
|
|
is_packed:=is_packed_record_or_object(def);
|
|
{ normal record }
|
|
consume(_LKLAMMER);
|
|
recoffset:=0;
|
|
sorg:='';
|
|
symidx:=0;
|
|
symlist:=def.symtable.SymList;
|
|
srsym:=get_next_varsym(def,symlist,symidx);
|
|
recsym := nil;
|
|
orgbasenode:=basenode;
|
|
basenode:=nil;
|
|
while token<>_RKLAMMER do
|
|
begin
|
|
s:=pattern;
|
|
sorg:=orgpattern;
|
|
consume(_ID);
|
|
consume(_COLON);
|
|
error := false;
|
|
recsym := tsym(def.symtable.Find(s));
|
|
if not assigned(recsym) then
|
|
begin
|
|
Message1(sym_e_illegal_field,sorg);
|
|
error := true;
|
|
end;
|
|
if (not error) and
|
|
(not assigned(srsym) or
|
|
(s <> srsym.name)) then
|
|
{ possible variant record (JM) }
|
|
begin
|
|
{ All parts of a variant start at the same offset }
|
|
{ Also allow jumping from one variant part to another, }
|
|
{ as long as the offsets match }
|
|
if (assigned(srsym) and
|
|
(tfieldvarsym(recsym).fieldoffset = tfieldvarsym(srsym).fieldoffset)) or
|
|
{ srsym is not assigned after parsing w2 in the }
|
|
{ typed const in the next example: }
|
|
{ type tr = record case byte of }
|
|
{ 1: (l1,l2: dword); }
|
|
{ 2: (w1,w2: word); }
|
|
{ end; }
|
|
{ const r: tr = (w1:1;w2:1;l2:5); }
|
|
(tfieldvarsym(recsym).fieldoffset = recoffset) then
|
|
begin
|
|
srsym:=recsym;
|
|
{ symidx should contain the next symbol id to search }
|
|
symidx:=SymList.indexof(srsym)+1;
|
|
end
|
|
{ going backwards isn't allowed in any mode }
|
|
else if (tfieldvarsym(recsym).fieldoffset<recoffset) then
|
|
begin
|
|
Message(parser_e_invalid_record_const);
|
|
error := true;
|
|
end
|
|
{ Delphi allows you to skip fields }
|
|
else if (m_delphi in current_settings.modeswitches) then
|
|
begin
|
|
Message1(parser_w_skipped_fields_before,sorg);
|
|
srsym := recsym;
|
|
end
|
|
{ FPC and TP don't }
|
|
else
|
|
begin
|
|
Message1(parser_e_skipped_fields_before,sorg);
|
|
error := true;
|
|
end;
|
|
end;
|
|
if error then
|
|
consume_all_until(_SEMICOLON)
|
|
else
|
|
begin
|
|
{ skipping fill bytes happens automatically, since we only
|
|
initialize the defined fields }
|
|
{ new position }
|
|
recoffset:=tfieldvarsym(srsym).fieldoffset;
|
|
if not(is_packed) then
|
|
inc(recoffset,tfieldvarsym(srsym).vardef.size)
|
|
else
|
|
inc(recoffset,tfieldvarsym(srsym).vardef.packedbitsize);
|
|
|
|
{ read the data }
|
|
if is_packed and
|
|
{ only orddefs and enumdefs are bitpacked, as in gcc/gpc }
|
|
not(tfieldvarsym(srsym).vardef.typ in [orddef,enumdef]) then
|
|
recoffset:=align(recoffset,8);
|
|
basenode:=csubscriptnode.create(srsym,orgbasenode.getcopy);
|
|
read_typed_const_data(tfieldvarsym(srsym).vardef);
|
|
|
|
{ keep previous field for checking whether whole }
|
|
{ record was initialized (JM) }
|
|
recsym := srsym;
|
|
{ goto next field }
|
|
srsym:=get_next_varsym(def,SymList,symidx);
|
|
if token=_SEMICOLON then
|
|
consume(_SEMICOLON)
|
|
else if (token=_COMMA) and (m_mac in current_settings.modeswitches) then
|
|
consume(_COMMA)
|
|
else
|
|
break;
|
|
end;
|
|
end;
|
|
|
|
{ are there any fields left, but don't complain if there only
|
|
come other variant parts after the last initialized field }
|
|
if assigned(srsym) and
|
|
(
|
|
(recsym=nil) or
|
|
(tfieldvarsym(srsym).fieldoffset > tfieldvarsym(recsym).fieldoffset)
|
|
) then
|
|
Message1(parser_w_skipped_fields_after,sorg);
|
|
orgbasenode.free;
|
|
basenode:=nil;
|
|
|
|
consume(_RKLAMMER);
|
|
end;
|
|
|
|
|
|
procedure tnodetreetypedconstbuilder.parse_objectdef(def: tobjectdef);
|
|
var
|
|
n,
|
|
orgbasenode : tnode;
|
|
obj : tobjectdef;
|
|
srsym : tsym;
|
|
st : tsymtable;
|
|
objoffset : aint;
|
|
s,sorg : TIDString;
|
|
begin
|
|
{ no support for packed object }
|
|
if is_packed_record_or_object(def) then
|
|
begin
|
|
Message(type_e_no_const_packed_record);
|
|
exit;
|
|
end;
|
|
|
|
{ only allow nil for implicit pointer object types }
|
|
if is_implicit_pointer_object_type(def) then
|
|
begin
|
|
n:=comp_expr(true,false);
|
|
if n.nodetype<>niln then
|
|
begin
|
|
Message(parser_e_type_const_not_possible);
|
|
consume_all_until(_SEMICOLON);
|
|
end
|
|
else
|
|
begin
|
|
addstatement(statmnt,cassignmentnode.create_internal(basenode,n));
|
|
n:=nil;
|
|
basenode:=nil;
|
|
end;
|
|
n.free;
|
|
exit;
|
|
end;
|
|
|
|
{ for objects we allow it only if it doesn't contain a vmt }
|
|
if (oo_has_vmt in def.objectoptions) and
|
|
(m_fpc in current_settings.modeswitches) then
|
|
begin
|
|
Message(parser_e_type_object_constants);
|
|
exit;
|
|
end;
|
|
|
|
consume(_LKLAMMER);
|
|
objoffset:=0;
|
|
orgbasenode:=basenode;
|
|
basenode:=nil;
|
|
while token<>_RKLAMMER do
|
|
begin
|
|
s:=pattern;
|
|
sorg:=orgpattern;
|
|
consume(_ID);
|
|
consume(_COLON);
|
|
srsym:=nil;
|
|
obj:=tobjectdef(def);
|
|
st:=obj.symtable;
|
|
while (srsym=nil) and assigned(st) do
|
|
begin
|
|
srsym:=tsym(st.Find(s));
|
|
if assigned(obj) then
|
|
obj:=obj.childof;
|
|
if assigned(obj) then
|
|
st:=obj.symtable
|
|
else
|
|
st:=nil;
|
|
end;
|
|
|
|
if (srsym=nil) or
|
|
(srsym.typ<>fieldvarsym) then
|
|
begin
|
|
if (srsym=nil) then
|
|
Message1(sym_e_id_not_found,sorg)
|
|
else
|
|
Message1(sym_e_illegal_field,sorg);
|
|
consume_all_until(_RKLAMMER);
|
|
break;
|
|
end
|
|
else
|
|
with tfieldvarsym(srsym) do
|
|
begin
|
|
{ check position }
|
|
if fieldoffset<objoffset then
|
|
message(parser_e_invalid_record_const);
|
|
|
|
{ new position }
|
|
objoffset:=fieldoffset+vardef.size;
|
|
|
|
{ read the data }
|
|
basenode:=csubscriptnode.create(srsym,orgbasenode.getcopy);
|
|
read_typed_const_data(vardef);
|
|
|
|
if not try_to_consume(_SEMICOLON) then
|
|
break;
|
|
end;
|
|
end;
|
|
consume(_RKLAMMER);
|
|
end;
|
|
|
|
|
|
procedure tnodetreetypedconstbuilder.tc_emit_orddef(def: torddef; var node: tnode);
|
|
begin
|
|
addstatement(statmnt,cassignmentnode.create_internal(basenode,node));
|
|
basenode:=nil;
|
|
node:=nil;
|
|
end;
|
|
|
|
|
|
procedure tnodetreetypedconstbuilder.tc_emit_floatdef(def: tfloatdef; var node: tnode);
|
|
begin
|
|
addstatement(statmnt,cassignmentnode.create_internal(basenode,node));
|
|
basenode:=nil;
|
|
node:=nil;
|
|
end;
|
|
|
|
|
|
procedure tnodetreetypedconstbuilder.tc_emit_classrefdef(def: tclassrefdef; var node: tnode);
|
|
begin
|
|
addstatement(statmnt,cassignmentnode.create_internal(basenode,node));
|
|
basenode:=nil;
|
|
node:=nil;
|
|
end;
|
|
|
|
|
|
procedure tnodetreetypedconstbuilder.tc_emit_pointerdef(def: tpointerdef; var node: tnode);
|
|
begin
|
|
addstatement(statmnt,cassignmentnode.create_internal(basenode,node));
|
|
basenode:=nil;
|
|
node:=nil;
|
|
end;
|
|
|
|
|
|
procedure tnodetreetypedconstbuilder.tc_emit_setdef(def: tsetdef; var node: tnode);
|
|
begin
|
|
addstatement(statmnt,cassignmentnode.create_internal(basenode,node));
|
|
basenode:=nil;
|
|
node:=nil;
|
|
end;
|
|
|
|
|
|
procedure tnodetreetypedconstbuilder.tc_emit_enumdef(def: tenumdef; var node: tnode);
|
|
begin
|
|
addstatement(statmnt,cassignmentnode.create_internal(basenode,node));
|
|
basenode:=nil;
|
|
node:=nil;
|
|
end;
|
|
|
|
|
|
procedure tnodetreetypedconstbuilder.tc_emit_stringdef(def: tstringdef; var node: tnode);
|
|
begin
|
|
addstatement(statmnt,cassignmentnode.create_internal(basenode,node));
|
|
basenode:=nil;
|
|
node:=nil;
|
|
end;
|
|
|
|
|
|
constructor tnodetreetypedconstbuilder.create(sym: tstaticvarsym; previnit: tnode);
|
|
begin
|
|
inherited create(sym);
|
|
basenode:=cloadnode.create(sym,sym.owner);
|
|
resultblock:=internalstatements(statmnt);
|
|
if assigned(previnit) then
|
|
addstatement(statmnt,previnit);
|
|
end;
|
|
|
|
|
|
destructor tnodetreetypedconstbuilder.destroy;
|
|
begin
|
|
freeandnil(basenode);
|
|
freeandnil(resultblock);
|
|
inherited destroy;
|
|
end;
|
|
|
|
|
|
function tnodetreetypedconstbuilder.parse_into_nodetree: tnode;
|
|
begin
|
|
read_typed_const_data(tcsym.vardef);
|
|
result:=self.resultblock;
|
|
self.resultblock:=nil;
|
|
end;
|
|
|
|
begin
|
|
{ default to asmlist version, best for most targets }
|
|
ctypedconstbuilder:=tasmlisttypedconstbuilder;
|
|
end.
|