mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-04-05 22:08:11 +02:00
2383 lines
89 KiB
ObjectPascal
2383 lines
89 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,cclasses,constexp,
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aasmbase,aasmdata,aasmtai,aasmcnst,
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node,nbas,
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symconst, 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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packedbitsize: byte;
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end;
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tasmlisttypedconstbuilder = class(ttypedconstbuilder)
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private
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fsym: tstaticvarsym;
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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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procedure flush_packed_value(var bp: tbitpackedval);
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protected
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ftcb: ttai_typedconstbuilder;
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fdatalist: tasmlist;
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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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destructor Destroy; override;
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procedure parse_into_asmlist;
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{ the asmlist containing the definition of the parsed entity and another
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one containing the data generated for that same entity (e.g. the
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string data referenced by an ansistring constant) }
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procedure get_final_asmlists(out reslist, datalist: 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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systems,tokens,verbose,compinnr,
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cutils,globals,widestr,scanner,
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symtable,
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defutil,defcmp,
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{ pass 1 }
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htypechk,procinfo,pass_1,
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nmem,ncnv,ninl,ncon,nld,nadd,
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{ parser specific stuff }
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pbase,pexpr,
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{ codegen }
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cpuinfo,cgbase,
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wpobase
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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) and
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not(sp_static in result.symoptions) 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([ef_accept_equal]);
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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([ef_accept_equal]);
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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([ef_accept_equal]);
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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 wpoinfomanager.symbol_live_in_currentproc(n.resultdef) then
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tobjectdef(tclassrefdef(n.resultdef).pointeddef).register_maybe_created_object_type;
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end;
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else
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;
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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([ef_accept_equal]);
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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([ef_accept_equal]);
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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([ef_accept_equal]);
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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([ef_accept_equal]);
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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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end;
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{$push}
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{$r-}
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{$q-}
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{ to work around broken x86 shifting, while generating bitmask }
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function getbitmask(len: byte): aword;
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begin
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if len >= (sizeof(result) * 8) then
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result:=0
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else
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result:=aword(1) shl len;
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result:=aword(result-1);
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end;
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{ shift left, and always pad the right bits with zeroes }
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function shiftleft(value: aword; count: byte): aword;
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begin
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if count >= (sizeof(result) * 8) then
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result:=0
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else
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result:=(value shl count) and (not getbitmask(count));
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end;
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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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if (bp.packedbitsize<AIntBits) and
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(bp.curbitoffset<AIntBits) then
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bp.curval:=bp.curval or (shiftleft(value,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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begin
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if shiftcount>=-AIntBits then
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bp.nextval:=(value and getbitmask(-shiftcount)) shl
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(AIntBits+shiftcount)
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else
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bp.nextval:=0;
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end
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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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{ work around broken x86 shifting }
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if bp.curbitoffset<AIntBits then
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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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if bp.curbitoffset>0 then
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bp.nextval:=value shr (AIntBits-bp.curbitoffset)
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else
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bp.nextval:=0;
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end;
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inc(bp.curbitoffset,bp.packedbitsize);
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end;
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procedure tasmlisttypedconstbuilder.flush_packed_value(var bp: tbitpackedval);
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var
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bitstowrite: longint;
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writeval : {$ifdef CPU8BITALU}smallint{$else}aint{$endif};
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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 a byte }
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bitstowrite:=align(bp.curbitoffset,8);
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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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{$push}{$r-,q-}
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bp.curval:=bp.curval shl 8;
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{$pop}
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end;
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ftcb.emit_tai(tai_const.create_8bit(writeval),u8inttype);
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dec(bitstowrite,8);
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end;
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bp.curval:=bp.nextval;
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bp.nextval:=0;
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end;
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{$pop}
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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 : {$ifdef CPU8BITALU}smallint{$else}aint{$endif};
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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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ftcb.maybe_begin_aggregate(def);
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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 }
|
||
if not parse_single_packed_const(def.elementdef,bp) then
|
||
exit;
|
||
{ flush final incomplete value if necessary }
|
||
if (bp.curbitoffset <> 0) then
|
||
flush_packed_value(bp);
|
||
ftcb.maybe_end_aggregate(def);
|
||
consume(_RKLAMMER);
|
||
end;
|
||
|
||
|
||
|
||
constructor tasmlisttypedconstbuilder.create(sym: tstaticvarsym);
|
||
begin
|
||
inherited;
|
||
fsym:=sym;
|
||
ftcb:=ctai_typedconstbuilder.create([tcalo_make_dead_strippable,tcalo_apply_constalign]);
|
||
fdatalist:=tasmlist.create;
|
||
curoffset:=0;
|
||
end;
|
||
|
||
|
||
destructor tasmlisttypedconstbuilder.Destroy;
|
||
begin
|
||
fdatalist.free;
|
||
ftcb.free;
|
||
inherited Destroy;
|
||
end;
|
||
|
||
|
||
procedure tasmlisttypedconstbuilder.tc_emit_stringdef(def: tstringdef; var node: tnode);
|
||
var
|
||
strlength : {$ifdef CPU8BITALU}smallint{$else}aint{$endif};
|
||
strval : pchar;
|
||
ll : tasmlabofs;
|
||
ca : pchar;
|
||
winlike : boolean;
|
||
hsym : tconstsym;
|
||
begin
|
||
strval:='';
|
||
{ load strval and strlength of the constant tree }
|
||
if (node.nodetype=stringconstn) or is_wide_or_unicode_string(def) or is_constwidecharnode(node) or
|
||
((node.nodetype=typen) and is_interfacecorba(ttypenode(node).typedef)) or
|
||
is_constcharnode(node) then
|
||
begin
|
||
{ convert to the expected string type so that
|
||
for widestrings strval is a tcompilerwidestring }
|
||
inserttypeconv(node,def);
|
||
if (not codegenerror) and
|
||
(node.nodetype=stringconstn) then
|
||
begin
|
||
strlength:=tstringconstnode(node).len;
|
||
if (tstringconstnode(node).cst_type in [cst_unicodestring,cst_widestring]) then
|
||
{ further on, tstringconstnode(node).valuews is used directly for this case }
|
||
strval:=nil
|
||
else
|
||
strval:=tstringconstnode(node).asconstpchar;
|
||
{ the def may have changed from e.g. RawByteString to
|
||
AnsiString(CP_ACP) }
|
||
if node.resultdef.typ=stringdef then
|
||
def:=tstringdef(node.resultdef)
|
||
else
|
||
internalerror(2014010501);
|
||
end
|
||
else
|
||
begin
|
||
{ an error occurred trying to convert the result to a string }
|
||
strlength:=-1;
|
||
{ it's possible that the type conversion could not be
|
||
evaluated at compile-time }
|
||
if not codegenerror then
|
||
CGMessage(parser_e_widestring_to_ansi_compile_time);
|
||
end;
|
||
end
|
||
else if is_constresourcestringnode(node) then
|
||
begin
|
||
hsym:=tconstsym(tloadnode(node).symtableentry);
|
||
strval:=pchar(hsym.value.valueptr);
|
||
strlength:=hsym.value.len;
|
||
{ Delphi-compatible (mis)feature:
|
||
Link AnsiString constants to their initializing resourcestring,
|
||
enabling them to be (re)translated at runtime.
|
||
Wide/UnicodeString are currently rejected above (with incorrect error message).
|
||
ShortStrings cannot be handled unless another table is built for them;
|
||
considering this acceptable, because Delphi rejects them altogether.
|
||
}
|
||
if (not is_shortstring(def)) and
|
||
((tcsym.owner.symtablelevel<=main_program_level) or
|
||
(current_old_block_type=bt_const)) then
|
||
begin
|
||
current_asmdata.ResStrInits.Concat(
|
||
TTCInitItem.Create(tcsym,curoffset,
|
||
current_asmdata.RefAsmSymbol(make_mangledname('RESSTR',hsym.owner,hsym.name),AT_DATA),charpointertype)
|
||
);
|
||
Include(tcsym.varoptions,vo_force_finalize);
|
||
end;
|
||
end
|
||
else
|
||
begin
|
||
Message(parser_e_illegal_expression);
|
||
strlength:=-1;
|
||
end;
|
||
if strlength>=0 then
|
||
begin
|
||
case def.stringtype of
|
||
st_shortstring:
|
||
begin
|
||
ftcb.maybe_begin_aggregate(def);
|
||
if strlength>=def.size then
|
||
begin
|
||
message2(parser_w_string_too_long,strpas(strval),tostr(def.size-1));
|
||
strlength:=def.size-1;
|
||
end;
|
||
ftcb.emit_tai(Tai_const.Create_8bit(strlength),cansichartype);
|
||
{ room for the string data + terminating #0 }
|
||
getmem(ca,def.size);
|
||
move(strval^,ca^,strlength);
|
||
{ zero-terminate and fill with spaces if size is shorter }
|
||
fillchar(ca[strlength],def.size-strlength-1,' ');
|
||
ca[strlength]:=#0;
|
||
ca[def.size-1]:=#0;
|
||
ftcb.emit_tai(Tai_string.Create_pchar(ca,def.size-1),carraydef.getreusable(cansichartype,def.size-1));
|
||
ftcb.maybe_end_aggregate(def);
|
||
end;
|
||
st_ansistring:
|
||
begin
|
||
{ an empty ansi string is nil! }
|
||
if (strlength=0) then
|
||
begin
|
||
ll.lab:=nil;
|
||
ll.ofs:=0;
|
||
end
|
||
else
|
||
ll:=ftcb.emit_ansistring_const(fdatalist,strval,strlength,def.encoding);
|
||
ftcb.emit_string_offset(ll,strlength,def.stringtype,false,charpointertype);
|
||
end;
|
||
st_unicodestring,
|
||
st_widestring:
|
||
begin
|
||
{ an empty wide/unicode string is nil! }
|
||
if (strlength=0) then
|
||
begin
|
||
ll.lab:=nil;
|
||
ll.ofs:=0;
|
||
winlike:=false;
|
||
end
|
||
else
|
||
begin
|
||
winlike:=(def.stringtype=st_widestring) and (tf_winlikewidestring in target_info.flags);
|
||
ll:=ftcb.emit_unicodestring_const(fdatalist,
|
||
tstringconstnode(node).valuews,
|
||
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,widecharpointertype)
|
||
);
|
||
ll.lab:=nil;
|
||
ll.ofs:=0;
|
||
Include(tcsym.varoptions,vo_force_finalize);
|
||
end;
|
||
end;
|
||
ftcb.emit_string_offset(ll,strlength,def.stringtype,winlike,widecharpointertype);
|
||
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
|
||
pasbool1,
|
||
pasbool8,
|
||
bool8bit,
|
||
pasbool16,
|
||
bool16bit,
|
||
pasbool32,
|
||
bool32bit,
|
||
pasbool64,
|
||
bool64bit:
|
||
begin
|
||
if is_constboolnode(node) then
|
||
begin
|
||
adaptrange(def,tordconstnode(node).value,false,false,cs_check_range in current_settings.localswitches);
|
||
ftcb.emit_ord_const(tordconstnode(node).value.svalue,def)
|
||
end
|
||
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
|
||
ftcb.emit_ord_const(byte(tordconstnode(node).value.svalue),def)
|
||
else
|
||
do_error;
|
||
end;
|
||
uwidechar :
|
||
begin
|
||
if is_constcharnode(node) then
|
||
inserttypeconv(node,cwidechartype);
|
||
if is_constwidecharnode(node) then
|
||
ftcb.emit_ord_const(word(tordconstnode(node).value.svalue),def)
|
||
else
|
||
do_error;
|
||
end;
|
||
s8bit,u8bit,
|
||
u16bit,s16bit,
|
||
s32bit,u32bit,
|
||
s64bit,u64bit :
|
||
begin
|
||
if is_constintnode(node) then
|
||
begin
|
||
adaptrange(def,tordconstnode(node).value,false,false,cs_check_range in current_settings.localswitches);
|
||
ftcb.emit_ord_const(tordconstnode(node).value.svalue,def);
|
||
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;
|
||
ftcb.emit_ord_const(intvalue,def);
|
||
end;
|
||
else
|
||
internalerror(200611052);
|
||
end;
|
||
end;
|
||
|
||
|
||
procedure tasmlisttypedconstbuilder.tc_emit_floatdef(def: tfloatdef; var node: tnode);
|
||
var
|
||
value : bestreal;
|
||
begin
|
||
value:=0.0;
|
||
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 :
|
||
ftcb.emit_tai(tai_realconst.create_s32real(ts32real(value)),def);
|
||
s64real :
|
||
{$ifdef ARM}
|
||
if is_double_hilo_swapped then
|
||
ftcb.emit_tai(tai_realconst.create_s64real_hiloswapped(ts64real(value)),def)
|
||
else
|
||
{$endif ARM}
|
||
ftcb.emit_tai(tai_realconst.create_s64real(ts64real(value)),def);
|
||
s80real :
|
||
ftcb.emit_tai(tai_realconst.create_s80real(value,s80floattype.size),def);
|
||
sc80real :
|
||
ftcb.emit_tai(tai_realconst.create_s80real(value,sc80floattype.size),def);
|
||
s64comp :
|
||
{ the round is necessary for native compilers where comp isn't a float }
|
||
ftcb.emit_tai(tai_realconst.create_s64compreal(round(value)),def);
|
||
s64currency:
|
||
ftcb.emit_tai(tai_realconst.create_s64compreal(round(value*10000)),def);
|
||
s128real:
|
||
ftcb.emit_tai(tai_realconst.create_s128real(value),def);
|
||
end;
|
||
end;
|
||
|
||
|
||
procedure tasmlisttypedconstbuilder.tc_emit_classrefdef(def: tclassrefdef; var node: tnode);
|
||
begin
|
||
case node.nodetype of
|
||
loadvmtaddrn:
|
||
begin
|
||
if not def_is_related(tobjectdef(tclassrefdef(node.resultdef).pointeddef),tobjectdef(def.pointeddef)) then
|
||
IncompatibleTypes(node.resultdef, def);
|
||
ftcb.emit_tai(Tai_const.Create_sym(current_asmdata.RefAsmSymbol(Tobjectdef(tclassrefdef(node.resultdef).pointeddef).vmt_mangledname,AT_DATA)),def);
|
||
end;
|
||
niln:
|
||
ftcb.emit_tai(Tai_const.Create_sym(nil),def);
|
||
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 : tcompilerwidestring;
|
||
i,len : longint;
|
||
ll : tasmlabel;
|
||
varalign : shortint;
|
||
datadef : tdef;
|
||
datatcb : ttai_typedconstbuilder;
|
||
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=typeconvn) then
|
||
with Ttypeconvnode(node) do
|
||
if (left.nodetype=addrn) and equal_defs(uinttype,node.resultdef) then
|
||
begin
|
||
hp:=left;
|
||
left:=nil;
|
||
node.free;
|
||
node:=hp;
|
||
end;
|
||
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
|
||
ftcb.queue_init(def);
|
||
ftcb.queue_typeconvn(ptrsinttype,def);
|
||
{$if sizeof(TConstPtrUInt)=8}
|
||
ftcb.queue_emit_ordconst(int64(tpointerconstnode(node).value),ptrsinttype);
|
||
{$else}
|
||
{$if sizeof(TConstPtrUInt)=4}
|
||
ftcb.queue_emit_ordconst(longint(tpointerconstnode(node).value),ptrsinttype);
|
||
{$else}
|
||
{$if sizeof(TConstPtrUInt)=2}
|
||
ftcb.queue_emit_ordconst(smallint(tpointerconstnode(node).value),ptrsinttype);
|
||
{$else}
|
||
{$if sizeof(TConstPtrUInt)=1}
|
||
ftcb.queue_emit_ordconst(shortint(tpointerconstnode(node).value),ptrsinttype);
|
||
{$else}
|
||
internalerror(200404122);
|
||
{$endif} {$endif} {$endif} {$endif}
|
||
end
|
||
{ nil pointer ? }
|
||
else if node.nodetype=niln then
|
||
ftcb.emit_tai(Tai_const.Create_sym(nil),def)
|
||
{ maybe pchar ? }
|
||
else
|
||
if is_char(def.pointeddef) and
|
||
((node.nodetype=stringconstn) or is_constcharnode(node) or is_constwidecharnode(node)) then
|
||
begin
|
||
{ ensure that a widestring is converted to the current codepage }
|
||
if is_constwidecharnode(node) then
|
||
begin
|
||
initwidestring(pw);
|
||
concatwidestringchar(pw,tcompilerwidechar(word(tordconstnode(node).value.svalue)));
|
||
hp:=cstringconstnode.createunistr(pw);
|
||
donewidestring(pw);
|
||
node.free;
|
||
do_typecheckpass(hp);
|
||
node:=hp;
|
||
end;
|
||
if (node.nodetype=stringconstn) and is_wide_or_unicode_string(node.resultdef) then
|
||
tstringconstnode(node).changestringtype(getansistringdef);
|
||
{ create a tcb for the string data (it's placed in a separate
|
||
asmlist) }
|
||
ftcb.start_internal_data_builder(fdatalist,sec_rodata_norel,'',datatcb,ll);
|
||
if node.nodetype=stringconstn then
|
||
varalign:=size_2_align(tstringconstnode(node).len)
|
||
else
|
||
varalign:=1;
|
||
varalign:=const_align(varalign);
|
||
{ represent the string data as an array }
|
||
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+1);
|
||
ca[len]:=#0;
|
||
if len>0 then
|
||
move(tstringconstnode(node).valueas[0],ca^,len);
|
||
datadef:=carraydef.getreusable(cansichartype,len+1);
|
||
datatcb.maybe_begin_aggregate(datadef);
|
||
datatcb.emit_tai(Tai_string.Create_pchar(ca,len+1),datadef);
|
||
datatcb.maybe_end_aggregate(datadef);
|
||
end
|
||
else if is_constcharnode(node) then
|
||
begin
|
||
datadef:=carraydef.getreusable(cansichartype,2);
|
||
datatcb.maybe_begin_aggregate(datadef);
|
||
datatcb.emit_tai(Tai_string.Create(char(byte(tordconstnode(node).value.svalue))+#0),datadef);
|
||
datatcb.maybe_end_aggregate(datadef);
|
||
end
|
||
else
|
||
begin
|
||
Message(parser_e_illegal_expression);
|
||
datadef:=carraydef.getreusable(cansichartype,1);
|
||
end;
|
||
ftcb.finish_internal_data_builder(datatcb,ll,datadef,varalign);
|
||
{ we now emit the address of the first element of the array
|
||
containing the string data }
|
||
ftcb.queue_init(def);
|
||
{ the first element ... }
|
||
ftcb.queue_vecn(datadef,0);
|
||
{ ... of the string array }
|
||
ftcb.queue_emit_asmsym(ll,datadef);
|
||
end
|
||
{ maybe pwidechar ? }
|
||
else
|
||
if is_widechar(def.pointeddef) and
|
||
(node.nodetype in [stringconstn,ordconstn]) then
|
||
begin
|
||
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
|
||
{ create a tcb for the string data (it's placed in a separate
|
||
asmlist) }
|
||
ftcb.start_internal_data_builder(fdatalist,sec_rodata,'',datatcb,ll);
|
||
datatcb:=ctai_typedconstbuilder.create([tcalo_is_lab,tcalo_make_dead_strippable,tcalo_apply_constalign]);
|
||
pw:=tstringconstnode(node).valuews;
|
||
{ include terminating #0 }
|
||
datadef:=carraydef.getreusable(cwidechartype,tstringconstnode(node).len+1);
|
||
datatcb.maybe_begin_aggregate(datadef);
|
||
for i:=0 to tstringconstnode(node).len-1 do
|
||
datatcb.emit_tai(Tai_const.Create_16bit(pw.data[i]),cwidechartype);
|
||
{ ending #0 }
|
||
datatcb.emit_tai(Tai_const.Create_16bit(0),cwidechartype);
|
||
datatcb.maybe_end_aggregate(datadef);
|
||
{ concat add the string data to the fdatalist }
|
||
ftcb.finish_internal_data_builder(datatcb,ll,datadef,const_align(sizeof(pint)));
|
||
{ we now emit the address of the first element of the array
|
||
containing the string data }
|
||
ftcb.queue_init(def);
|
||
{ the first element ... }
|
||
ftcb.queue_vecn(datadef,0);
|
||
{ ... of the string array }
|
||
ftcb.queue_emit_asmsym(ll,datadef);
|
||
end;
|
||
end
|
||
else
|
||
Message(parser_e_illegal_expression);
|
||
end
|
||
else
|
||
if (node.nodetype in [addrn,addn,subn]) 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,addn,subn]) do
|
||
hp:=tunarynode(hp).left;
|
||
if (hp.nodetype=loadn) then
|
||
begin
|
||
hp:=node;
|
||
ftcb.queue_init(def);
|
||
while assigned(hp) and (hp.nodetype<>loadn) do
|
||
begin
|
||
case hp.nodetype of
|
||
addn :
|
||
begin
|
||
if (is_constintnode(taddnode(hp).right) or
|
||
is_constenumnode(taddnode(hp).right) or
|
||
is_constcharnode(taddnode(hp).right) or
|
||
is_constboolnode(taddnode(hp).right)) and
|
||
is_pointer(taddnode(hp).left.resultdef) then
|
||
ftcb.queue_pointeraddn(tpointerdef(taddnode(hp).left.resultdef),get_ordinal_value(taddnode(hp).right))
|
||
else
|
||
Message(parser_e_illegal_expression);
|
||
end;
|
||
subn :
|
||
begin
|
||
if (is_constintnode(taddnode(hp).right) or
|
||
is_constenumnode(taddnode(hp).right) or
|
||
is_constcharnode(taddnode(hp).right) or
|
||
is_constboolnode(taddnode(hp).right)) and
|
||
is_pointer(taddnode(hp).left.resultdef) then
|
||
ftcb.queue_pointersubn(tpointerdef(taddnode(hp).left.resultdef),get_ordinal_value(taddnode(hp).right))
|
||
else
|
||
Message(parser_e_illegal_expression);
|
||
end;
|
||
vecn :
|
||
begin
|
||
if (is_constintnode(tvecnode(hp).right) or
|
||
is_constenumnode(tvecnode(hp).right) or
|
||
is_constcharnode(tvecnode(hp).right) or
|
||
is_constboolnode(tvecnode(hp).right)) and
|
||
not is_implicit_array_pointer(tvecnode(hp).left.resultdef) then
|
||
ftcb.queue_vecn(tvecnode(hp).left.resultdef,get_ordinal_value(tvecnode(hp).right))
|
||
else
|
||
Message(parser_e_illegal_expression);
|
||
end;
|
||
subscriptn :
|
||
ftcb.queue_subscriptn(tabstractrecorddef(tsubscriptnode(hp).left.resultdef),tsubscriptnode(hp).vs);
|
||
typeconvn :
|
||
begin
|
||
if not(ttypeconvnode(hp).convtype in [tc_equal,tc_proc_2_procvar]) then
|
||
Message(parser_e_illegal_expression)
|
||
else
|
||
ftcb.queue_typeconvn(ttypeconvnode(hp).left.resultdef,hp.resultdef);
|
||
end;
|
||
addrn :
|
||
{ nothing, is implicit };
|
||
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
|
||
ftcb.queue_emit_proc(pd);
|
||
end;
|
||
staticvarsym :
|
||
ftcb.queue_emit_staticvar(tstaticvarsym(srsym));
|
||
labelsym :
|
||
ftcb.queue_emit_label(tlabelsym(srsym));
|
||
constsym :
|
||
if tconstsym(srsym).consttyp in [constresourcestring,constwresourcestring] then
|
||
ftcb.queue_emit_const(tconstsym(srsym))
|
||
else
|
||
Message(type_e_constant_expr_expected);
|
||
else
|
||
Message(type_e_constant_expr_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
|
||
// TODO correct type?
|
||
ftcb.emit_tai(Tai_const.createname(
|
||
tobjectdef(tinlinenode(node).left.resultdef).vmt_mangledname,AT_DATA,0),
|
||
voidpointertype);
|
||
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;
|
||
setval: cardinal;
|
||
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
|
||
ftcb.maybe_begin_aggregate(def);
|
||
tsetconstnode(node).adjustforsetbase;
|
||
{ this writing is endian-dependant }
|
||
if not is_smallset(def) then
|
||
begin
|
||
if source_info.endian=target_info.endian then
|
||
begin
|
||
for i:=0 to node.resultdef.size-1 do
|
||
ftcb.emit_tai(tai_const.create_8bit(Psetbytes(tsetconstnode(node).value_set)^[i]),u8inttype);
|
||
end
|
||
else
|
||
begin
|
||
for i:=0 to node.resultdef.size-1 do
|
||
ftcb.emit_tai(tai_const.create_8bit(reverse_byte(Psetbytes(tsetconstnode(node).value_set)^[i])),u8inttype);
|
||
end;
|
||
end
|
||
else
|
||
begin
|
||
{ emit the set as a single constant (would be nicer if we
|
||
could automatically merge the bytes inside the
|
||
typed const builder, but it's not easy :/ ) }
|
||
setval:=0;
|
||
if source_info.endian=target_info.endian then
|
||
begin
|
||
for i:=0 to node.resultdef.size-1 do
|
||
setval:=setval or (Psetbytes(tsetconstnode(node).value_set)^[i] shl (i*8));
|
||
end
|
||
else
|
||
begin
|
||
for i:=0 to node.resultdef.size-1 do
|
||
setval:=setval or (reverse_byte(Psetbytes(tsetconstnode(node).value_set)^[i]) shl (i*8));
|
||
end;
|
||
case def.size of
|
||
1:
|
||
ftcb.emit_tai(tai_const.create_8bit(setval),def);
|
||
2:
|
||
begin
|
||
if target_info.endian=endian_big then
|
||
setval:=swapendian(word(setval));
|
||
ftcb.emit_tai(tai_const.create_16bit(setval),def);
|
||
end;
|
||
4:
|
||
begin
|
||
if target_info.endian=endian_big then
|
||
setval:=swapendian(cardinal(setval));
|
||
ftcb.emit_tai(tai_const.create_32bit(longint(setval)),def);
|
||
end;
|
||
else
|
||
internalerror(2015112207);
|
||
end;
|
||
end;
|
||
ftcb.maybe_end_aggregate(def);
|
||
end;
|
||
end
|
||
else
|
||
Message(parser_e_illegal_expression);
|
||
end;
|
||
|
||
|
||
procedure tasmlisttypedconstbuilder.tc_emit_enumdef(def: tenumdef; var node: tnode);
|
||
var
|
||
equal: boolean;
|
||
begin
|
||
if node.nodetype=ordconstn then
|
||
begin
|
||
equal:=equal_defs(node.resultdef,def);
|
||
if equal or
|
||
is_subequal(node.resultdef,def) then
|
||
begin
|
||
{ if equal, the necessary range checking has already been
|
||
performed; needed for handling hacks like
|
||
const x = tenum(255); }
|
||
if not equal then
|
||
adaptrange(def,tordconstnode(node).value,false,false,cs_check_range in current_settings.localswitches);
|
||
case node.resultdef.size of
|
||
1 : ftcb.emit_tai(Tai_const.Create_8bit(Byte(tordconstnode(node).value.svalue)),def);
|
||
2 : ftcb.emit_tai(Tai_const.Create_16bit(Word(tordconstnode(node).value.svalue)),def);
|
||
4 : ftcb.emit_tai(Tai_const.Create_32bit(Longint(tordconstnode(node).value.svalue)),def);
|
||
else
|
||
internalerror(2022040301);
|
||
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([ef_accept_equal]);
|
||
if (node.nodetype <> ordconstn) or
|
||
(not equal_defs(node.resultdef,def) and
|
||
not is_subequal(node.resultdef,def)) then
|
||
begin
|
||
incompatibletypes(node.resultdef,def);
|
||
node.free;
|
||
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(bp);
|
||
node.free;
|
||
end;
|
||
|
||
procedure tasmlisttypedconstbuilder.get_final_asmlists(out reslist, datalist: tasmlist);
|
||
var
|
||
asmsym: tasmsymbol;
|
||
addstabx: boolean;
|
||
sec: TAsmSectiontype;
|
||
secname: ansistring;
|
||
begin
|
||
addstabx:=false;
|
||
if fsym.globalasmsym then
|
||
begin
|
||
if (target_dbg.id=dbg_stabx) and
|
||
(cs_debuginfo in current_settings.moduleswitches) and
|
||
not assigned(current_asmdata.GetAsmSymbol(fsym.name)) then
|
||
addstabx:=true;
|
||
asmsym:=current_asmdata.DefineAsmSymbol(fsym.mangledname,AB_GLOBAL,AT_DATA,tcsym.vardef)
|
||
end
|
||
else if tf_supports_hidden_symbols in target_info.flags then
|
||
asmsym:=current_asmdata.DefineAsmSymbol(fsym.mangledname,AB_PRIVATE_EXTERN,AT_DATA,tcsym.vardef)
|
||
else
|
||
asmsym:=current_asmdata.DefineAsmSymbol(fsym.mangledname,AB_LOCAL,AT_DATA,tcsym.vardef);
|
||
if vo_has_section in fsym.varoptions then
|
||
begin
|
||
sec:=sec_user;
|
||
secname:=fsym.section;
|
||
end
|
||
else
|
||
begin
|
||
{ Certain types like windows WideString are initialized at runtime and cannot
|
||
be placed into readonly memory }
|
||
if (fsym.varspez=vs_const) and
|
||
not (vo_force_finalize in fsym.varoptions) then
|
||
sec:=sec_rodata
|
||
else
|
||
sec:=sec_data;
|
||
secname:=asmsym.Name;
|
||
end;
|
||
reslist:=ftcb.get_final_asmlist(asmsym,fsym,fsym.vardef,sec,secname,fsym.vardef.alignment);
|
||
if addstabx then
|
||
begin
|
||
{ see same code in ncgutil.insertbssdata }
|
||
reslist.insert(tai_directive.Create(asd_reference,fsym.name));
|
||
reslist.insert(tai_symbol.Create(current_asmdata.DefineAsmSymbol(fsym.name,AB_LOCAL,AT_DATA,tcsym.vardef),0));
|
||
end;
|
||
datalist:=fdatalist;
|
||
end;
|
||
|
||
|
||
procedure tasmlisttypedconstbuilder.parse_arraydef(def:tarraydef);
|
||
const
|
||
LKlammerToken: array[Boolean] of TToken = (_LKLAMMER, _LECKKLAMMER);
|
||
RKlammerToken: array[Boolean] of TToken = (_RKLAMMER, _RECKKLAMMER);
|
||
var
|
||
n : tnode;
|
||
i : longint;
|
||
len : asizeint;
|
||
ch : array[0..1] of char;
|
||
ca : pbyte;
|
||
int_const: tai_const;
|
||
char_size: integer;
|
||
dyncount,
|
||
oldoffset: asizeint;
|
||
dummy : byte;
|
||
sectype : tasmsectiontype;
|
||
oldtcb,
|
||
datatcb : ttai_typedconstbuilder;
|
||
ll : tasmlabel;
|
||
dyncountloc : ttypedconstplaceholder;
|
||
llofs : tasmlabofs;
|
||
dynarrdef : tdef;
|
||
begin
|
||
{ dynamic array }
|
||
if is_dynamic_array(def) then
|
||
begin
|
||
if try_to_consume(_NIL) then
|
||
begin
|
||
ftcb.emit_tai(Tai_const.Create_sym(nil),def);
|
||
end
|
||
else if try_to_consume(LKlammerToken[m_delphi in current_settings.modeswitches]) then
|
||
begin
|
||
if try_to_consume(RKlammerToken[m_delphi in current_settings.modeswitches]) then
|
||
begin
|
||
ftcb.emit_tai(tai_const.create_sym(nil),def);
|
||
end
|
||
else
|
||
begin
|
||
if fsym.varspez=vs_const then
|
||
sectype:=sec_rodata
|
||
else
|
||
sectype:=sec_data;
|
||
ftcb.start_internal_data_builder(fdatalist,sectype,'',datatcb,ll);
|
||
|
||
llofs:=datatcb.begin_dynarray_const(def,ll,dyncountloc);
|
||
|
||
dyncount:=0;
|
||
|
||
oldtcb:=ftcb;
|
||
ftcb:=datatcb;
|
||
while true do
|
||
begin
|
||
read_typed_const_data(def.elementdef);
|
||
inc(dyncount);
|
||
if try_to_consume(RKlammerToken[m_delphi in current_settings.modeswitches]) then
|
||
break
|
||
else
|
||
consume(_COMMA);
|
||
end;
|
||
ftcb:=oldtcb;
|
||
|
||
dynarrdef:=datatcb.end_dynarray_const(def,dyncount,dyncountloc,llofs);
|
||
|
||
ftcb.finish_internal_data_builder(datatcb,ll,dynarrdef,sizeof(pint));
|
||
|
||
ftcb.emit_dynarray_offset(llofs,dyncount,def,trecorddef(dynarrdef));
|
||
end;
|
||
end
|
||
else
|
||
consume(_LKLAMMER);
|
||
end
|
||
{ packed array constant }
|
||
else if is_packed_array(def) and
|
||
(def.elementdef.typ in [orddef,enumdef]) 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
|
||
ftcb.maybe_begin_aggregate(def);
|
||
oldoffset:=curoffset;
|
||
curoffset:=0;
|
||
{ in case of a generic subroutine, it might be we cannot
|
||
determine the size yet }
|
||
if assigned(current_procinfo) and (df_generic in current_procinfo.procdef.defoptions) then
|
||
begin
|
||
while true do
|
||
begin
|
||
read_typed_const_data(def.elementdef);
|
||
if token=_RKLAMMER then
|
||
begin
|
||
consume(_RKLAMMER);
|
||
break;
|
||
end
|
||
else
|
||
consume(_COMMA);
|
||
end;
|
||
end
|
||
else
|
||
begin
|
||
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);
|
||
end;
|
||
curoffset:=oldoffset;
|
||
if ErrorCount=0 then
|
||
ftcb.maybe_end_aggregate(def);
|
||
end
|
||
{ if array of char then we allow also a string }
|
||
else if is_anychar(def.elementdef) then
|
||
begin
|
||
ftcb.maybe_begin_aggregate(def);
|
||
char_size:=def.elementdef.size;
|
||
n:=comp_expr([ef_accept_equal]);
|
||
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).valueas);
|
||
end;
|
||
2:
|
||
begin
|
||
inserttypeconv(n,cunicodestringtype);
|
||
if n.nodetype<>stringconstn then
|
||
internalerror(2010033009);
|
||
if tstringconstnode(n).valuews.len>0 then
|
||
ca:=pointer(@tstringconstnode(n).valuews.data[0])
|
||
else
|
||
ca:=nil;
|
||
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(2010033006);
|
||
ch[0]:=chr(tordconstnode(n).value.uvalue and $ff);
|
||
end;
|
||
2:
|
||
widechar(ch):=widechar(tordconstnode(n).value.uvalue and $ffff);
|
||
else
|
||
internalerror(2010033008);
|
||
end;
|
||
ca:=@ch;
|
||
len:=1;
|
||
end
|
||
else
|
||
begin
|
||
Message(parser_e_illegal_expression);
|
||
len:=0;
|
||
{ avoid crash later on }
|
||
dummy:=0;
|
||
ca:=@dummy;
|
||
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);
|
||
ftcb.emit_tai(int_const,def.elementdef)
|
||
end;
|
||
ftcb.maybe_end_aggregate(def);
|
||
n.free;
|
||
end
|
||
else
|
||
begin
|
||
{ we want the ( }
|
||
consume(_LKLAMMER);
|
||
end;
|
||
end;
|
||
|
||
|
||
procedure tasmlisttypedconstbuilder.parse_procvardef(def:tprocvardef);
|
||
var
|
||
tmpn,n : tnode;
|
||
pd : tprocdef;
|
||
procaddrdef: tprocvardef;
|
||
havepd,
|
||
haveblock: boolean;
|
||
selfnode: tnode;
|
||
selfdef: tdef;
|
||
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
|
||
ftcb.maybe_begin_aggregate(def);
|
||
{ we need the procdef type called by the procvar here, not the
|
||
procvar record }
|
||
ftcb.emit_tai_procvar2procdef(Tai_const.Create_sym(nil),def);
|
||
if not def.is_addressonly then
|
||
ftcb.emit_tai(Tai_const.Create_sym(nil),voidpointertype);
|
||
ftcb.maybe_end_aggregate(def);
|
||
exit;
|
||
end;
|
||
{ parse the rest too, so we can continue with error checking }
|
||
getprocvardef:=def;
|
||
n:=comp_expr([ef_accept_equal]);
|
||
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;
|
||
{ in case of a nested procdef initialised with a global routine }
|
||
ftcb.maybe_begin_aggregate(def);
|
||
{ get the address of the procedure, except if it's a C-block (then we
|
||
we will end up with a record that represents the C-block) }
|
||
if not is_block(def) then
|
||
procaddrdef:=cprocvardef.getreusableprocaddr(def,pc_address_only)
|
||
else
|
||
procaddrdef:=def;
|
||
ftcb.queue_init(procaddrdef);
|
||
{ remove typeconvs, that will normally insert a lea
|
||
instruction which is not necessary for us }
|
||
while n.nodetype=typeconvn do
|
||
begin
|
||
ftcb.queue_typeconvn(ttypeconvnode(n).left.resultdef,n.resultdef);
|
||
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;
|
||
pd:=nil;
|
||
{ we now need to have a loadn with a procsym }
|
||
havepd:=
|
||
(n.nodetype=loadn) and
|
||
(tloadnode(n).symtableentry.typ=procsym);
|
||
{ or a staticvarsym representing a block }
|
||
haveblock:=
|
||
(n.nodetype=loadn) and
|
||
(tloadnode(n).symtableentry.typ=staticvarsym) and
|
||
(sp_internal in tloadnode(n).symtableentry.symoptions);
|
||
if havepd or
|
||
haveblock then
|
||
begin
|
||
if havepd then
|
||
begin
|
||
pd:=tloadnode(n).procdef;
|
||
ftcb.queue_emit_proc(pd);
|
||
end
|
||
else
|
||
begin
|
||
ftcb.queue_emit_staticvar(tstaticvarsym(tloadnode(n).symtableentry));
|
||
end;
|
||
{ the Data field of a method pointer can be initialised
|
||
either with NIL (handled above) or with a class type }
|
||
if po_methodpointer in def.procoptions then
|
||
begin
|
||
selfnode:=tloadnode(n).left;
|
||
{ class type must be known at compile time }
|
||
if assigned(selfnode) and
|
||
(selfnode.nodetype=loadvmtaddrn) and
|
||
(tloadvmtaddrnode(selfnode).left.nodetype=typen) then
|
||
begin
|
||
selfdef:=selfnode.resultdef;
|
||
if selfdef.typ<>classrefdef then
|
||
internalerror(2021122301);
|
||
selfdef:=tclassrefdef(selfdef).pointeddef;
|
||
ftcb.emit_tai(Tai_const.Create_sym(
|
||
current_asmdata.RefAsmSymbol(tobjectdef(selfdef).vmt_mangledname,AT_DATA)),
|
||
voidpointertype);
|
||
end
|
||
else
|
||
Message(parser_e_no_procvarobj_const);
|
||
end
|
||
{ 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 }
|
||
else if is_nested_pd(def) then
|
||
begin
|
||
if haveblock or
|
||
is_nested_pd(pd) then
|
||
Message(parser_e_no_procvarnested_const);
|
||
ftcb.emit_tai(Tai_const.Create_sym(nil),voidpointertype);
|
||
end;
|
||
end
|
||
else if n.nodetype=pointerconstn then
|
||
begin
|
||
ftcb.queue_emit_ordconst(tpointerconstnode(n).value,procaddrdef);
|
||
if not def.is_addressonly then
|
||
ftcb.emit_tai(Tai_const.Create_sym(nil),voidpointertype);
|
||
end
|
||
else
|
||
Message(parser_e_illegal_expression);
|
||
ftcb.maybe_end_aggregate(def);
|
||
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 : {$ifdef CPU8BITALU}smallint{$else}aint{$endif};
|
||
bp : tbitpackedval;
|
||
error,
|
||
is_packed: boolean;
|
||
startoffset: {$ifdef CPU8BITALU}word{$else}aword{$endif};
|
||
|
||
procedure handle_stringconstn;
|
||
begin
|
||
if length(tstringconstnode(n).valueas)>0 then
|
||
hs:=strpas(@tstringconstnode(n).valueas[0])
|
||
else
|
||
hs:='';
|
||
if string2guid(hs,tmpguid) then
|
||
ftcb.emit_guid_const(tmpguid)
|
||
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([ef_accept_equal]);
|
||
if n.nodetype=stringconstn then
|
||
handle_stringconstn
|
||
else
|
||
begin
|
||
inserttypeconv(n,rec_tguid);
|
||
if n.nodetype=guidconstn then
|
||
ftcb.emit_guid_const(tguidconstnode(n).value)
|
||
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([ef_accept_equal]);
|
||
inserttypeconv(n,cshortstringtype);
|
||
if n.nodetype=stringconstn then
|
||
handle_stringconstn
|
||
else
|
||
Message(parser_e_illegal_expression);
|
||
n.free;
|
||
exit;
|
||
end;
|
||
ftcb.maybe_begin_aggregate(def);
|
||
{ bitpacked record? }
|
||
is_packed:=is_packed_record_or_object(def);
|
||
if (is_packed) then
|
||
{ packedbitsize will be set separately for each field }
|
||
initbitpackval(bp,0);
|
||
{ normal record }
|
||
consume(_LKLAMMER);
|
||
recoffset:=0;
|
||
sorg:='';
|
||
symidx:=0;
|
||
symlist:=def.symtable.SymList;
|
||
srsym:=get_next_varsym(def,symlist,symidx);
|
||
recsym := nil;
|
||
startoffset:=curoffset;
|
||
error := false;
|
||
while token<>_RKLAMMER do
|
||
begin
|
||
s:=pattern;
|
||
sorg:=orgpattern;
|
||
consume(_ID);
|
||
consume(_COLON);
|
||
recsym := tsym(def.symtable.Find(s));
|
||
if not assigned(recsym) or (recsym.typ<>fieldvarsym) 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:=0
|
||
else
|
||
begin
|
||
flush_packed_value(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
|
||
ftcb.emit_tai(Tai_const.Create_8bit(0),u8inttype)
|
||
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 }
|
||
ftcb.next_field:=tfieldvarsym(srsym);
|
||
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(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 ErrorCount=0 then
|
||
begin
|
||
if not(is_packed) then
|
||
fillbytes:=0
|
||
else
|
||
begin
|
||
flush_packed_value(bp);
|
||
recoffset:=align(recoffset,8);
|
||
fillbytes:=def.size-(recoffset div 8);
|
||
end;
|
||
for i:=1 to fillbytes do
|
||
ftcb.emit_tai(Tai_const.Create_8bit(0),u8inttype);
|
||
|
||
ftcb.maybe_end_aggregate(def);
|
||
end;
|
||
|
||
consume(_RKLAMMER);
|
||
end;
|
||
|
||
|
||
procedure tasmlisttypedconstbuilder.parse_objectdef(def:tobjectdef);
|
||
var
|
||
n : tnode;
|
||
obj : tobjectdef;
|
||
srsym : tsym;
|
||
st : tsymtable;
|
||
objoffset : {$ifdef CPU8BITALU}smallint{$else}aint{$endif};
|
||
s,sorg : TIDString;
|
||
vmtwritten : boolean;
|
||
startoffset : {$ifdef CPU8BITALU}smallint{$else}aint{$endif};
|
||
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([ef_accept_equal]);
|
||
if n.nodetype<>niln then
|
||
begin
|
||
Message(parser_e_type_const_not_possible);
|
||
consume_all_until(_SEMICOLON);
|
||
end
|
||
else
|
||
ftcb.emit_tai(Tai_const.Create_sym(nil),def);
|
||
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;
|
||
|
||
ftcb.maybe_begin_aggregate(def);
|
||
|
||
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
|
||
ftcb.next_field:=tfieldvarsym(def.vmt_field);
|
||
ftcb.emit_tai(tai_const.createname(def.vmt_mangledname,AT_DATA,0),tfieldvarsym(def.vmt_field).vardef);
|
||
objoffset:=def.vmt_offset+tfieldvarsym(def.vmt_field).vardef.size;
|
||
vmtwritten:=true;
|
||
end;
|
||
|
||
ftcb.next_field:=tfieldvarsym(srsym);
|
||
|
||
{ 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;
|
||
{ add VMT pointer if we stopped writing fields before the VMT was
|
||
written }
|
||
if not(m_fpc in current_settings.modeswitches) and
|
||
(oo_has_vmt in def.objectoptions) and
|
||
(def.vmt_offset>=objoffset) then
|
||
begin
|
||
ftcb.next_field:=tfieldvarsym(def.vmt_field);
|
||
ftcb.emit_tai(tai_const.createname(def.vmt_mangledname,AT_DATA,0),tfieldvarsym(def.vmt_field).vardef);
|
||
objoffset:=def.vmt_offset+tfieldvarsym(def.vmt_field).vardef.size;
|
||
end;
|
||
ftcb.maybe_end_aggregate(def);
|
||
consume(_RKLAMMER);
|
||
end;
|
||
|
||
|
||
procedure tasmlisttypedconstbuilder.parse_into_asmlist;
|
||
begin
|
||
read_typed_const_data(tcsym.vardef);
|
||
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([ef_accept_equal]);
|
||
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([ef_accept_equal])));
|
||
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 : {$ifdef CPU8BITALU}smallint{$else}aint{$endif};
|
||
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([ef_accept_equal]);
|
||
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([ef_accept_equal]);
|
||
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 : {$ifdef CPU8BITALU}smallint{$else}aint{$endif};
|
||
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([ef_accept_equal]);
|
||
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.
|