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996 lines
40 KiB
ObjectPascal
996 lines
40 KiB
ObjectPascal
{
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Copyright (c) 1998-2002 by Florian Klaempfl
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Does declaration (but not type) parsing for Free Pascal
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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 pdecl;
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{$i fpcdefs.inc}
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interface
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uses
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{ common }
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cclasses,
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{ global }
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globtype,
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{ symtable }
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symsym,symdef,
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{ pass_1 }
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node;
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function readconstant(const orgname:string;const filepos:tfileposinfo; out nodetype: tnodetype):tconstsym;
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procedure const_dec;
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procedure consts_dec(in_structure, allow_typed_const: boolean);
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procedure label_dec;
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procedure type_dec;
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procedure types_dec(in_structure: boolean);
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procedure var_dec;
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procedure threadvar_dec;
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procedure property_dec;
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procedure resourcestring_dec;
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implementation
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uses
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{ common }
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cutils,
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{ global }
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globals,tokens,verbose,widestr,constexp,
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systems,aasmdata,fmodule,
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{ symtable }
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symconst,symbase,symtype,symtable,symcreat,defutil,
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{ pass 1 }
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htypechk,ninl,ncon,nobj,ngenutil,
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{ parser }
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scanner,
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pbase,pexpr,ptype,ptconst,pdecsub,pdecvar,pdecobj,pgenutil,
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{$ifdef jvm}
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pjvm,
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{$endif}
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{ cpu-information }
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cpuinfo
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;
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function readconstant(const orgname:string;const filepos:tfileposinfo; out nodetype: tnodetype):tconstsym;
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var
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hp : tconstsym;
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p : tnode;
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ps : pconstset;
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pd : pbestreal;
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pg : pguid;
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sp : pchar;
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pw : pcompilerwidestring;
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storetokenpos : tfileposinfo;
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begin
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readconstant:=nil;
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if orgname='' then
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internalerror(9584582);
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hp:=nil;
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p:=comp_expr(true,false);
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nodetype:=p.nodetype;
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storetokenpos:=current_tokenpos;
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current_tokenpos:=filepos;
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case p.nodetype of
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ordconstn:
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begin
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if p.resultdef.typ=pointerdef then
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hp:=tconstsym.create_ordptr(orgname,constpointer,tordconstnode(p).value.uvalue,p.resultdef)
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else
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hp:=tconstsym.create_ord(orgname,constord,tordconstnode(p).value,p.resultdef);
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end;
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stringconstn:
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begin
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if is_wide_or_unicode_string(p.resultdef) then
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begin
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initwidestring(pw);
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copywidestring(pcompilerwidestring(tstringconstnode(p).value_str),pw);
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hp:=tconstsym.create_wstring(orgname,constwstring,pw);
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end
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else
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begin
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getmem(sp,tstringconstnode(p).len+1);
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move(tstringconstnode(p).value_str^,sp^,tstringconstnode(p).len+1);
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{ if a non-default ansistring code page has been specified,
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keep it }
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if is_ansistring(p.resultdef) and
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(tstringdef(p.resultdef).encoding<>0) then
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hp:=tconstsym.create_string(orgname,conststring,sp,tstringconstnode(p).len,p.resultdef)
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else
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hp:=tconstsym.create_string(orgname,conststring,sp,tstringconstnode(p).len,nil);
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end;
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end;
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realconstn :
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begin
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new(pd);
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pd^:=trealconstnode(p).value_real;
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hp:=tconstsym.create_ptr(orgname,constreal,pd,p.resultdef);
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end;
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setconstn :
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begin
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new(ps);
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ps^:=tsetconstnode(p).value_set^;
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hp:=tconstsym.create_ptr(orgname,constset,ps,p.resultdef);
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end;
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pointerconstn :
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begin
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hp:=tconstsym.create_ordptr(orgname,constpointer,tpointerconstnode(p).value,p.resultdef);
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end;
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niln :
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begin
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hp:=tconstsym.create_ord(orgname,constnil,0,p.resultdef);
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end;
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typen :
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begin
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if is_interface(p.resultdef) then
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begin
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if assigned(tobjectdef(p.resultdef).iidguid) then
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begin
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new(pg);
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pg^:=tobjectdef(p.resultdef).iidguid^;
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hp:=tconstsym.create_ptr(orgname,constguid,pg,p.resultdef);
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end
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else
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Message1(parser_e_interface_has_no_guid,tobjectdef(p.resultdef).objrealname^);
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end
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else
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Message(parser_e_illegal_expression);
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end;
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inlinen:
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begin
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{ this situation only happens if a intrinsic is parsed that has a
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generic type as its argument. As we don't know certain
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information about the final type yet, we need to use safe
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values (mostly 0) }
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if not parse_generic then
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Message(parser_e_illegal_expression);
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case tinlinenode(p).inlinenumber of
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in_sizeof_x,
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in_bitsizeof_x:
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begin
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hp:=tconstsym.create_ord(orgname,constord,0,p.resultdef);
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end;
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{ add other cases here if necessary }
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else
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Message(parser_e_illegal_expression);
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end;
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end;
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else
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Message(parser_e_illegal_expression);
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end;
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current_tokenpos:=storetokenpos;
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p.free;
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readconstant:=hp;
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end;
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procedure const_dec;
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begin
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consume(_CONST);
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consts_dec(false,true);
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end;
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procedure consts_dec(in_structure, allow_typed_const: boolean);
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var
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orgname : TIDString;
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hdef : tdef;
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sym : tsym;
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dummysymoptions : tsymoptions;
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deprecatedmsg : pshortstring;
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storetokenpos,filepos : tfileposinfo;
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nodetype : tnodetype;
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old_block_type : tblock_type;
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skipequal : boolean;
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tclist : tasmlist;
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varspez : tvarspez;
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begin
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old_block_type:=block_type;
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block_type:=bt_const;
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repeat
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orgname:=orgpattern;
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filepos:=current_tokenpos;
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consume(_ID);
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case token of
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_EQ:
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begin
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consume(_EQ);
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sym:=readconstant(orgname,filepos,nodetype);
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{ Support hint directives }
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dummysymoptions:=[];
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deprecatedmsg:=nil;
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try_consume_hintdirective(dummysymoptions,deprecatedmsg);
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if assigned(sym) then
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begin
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sym.symoptions:=sym.symoptions+dummysymoptions;
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sym.deprecatedmsg:=deprecatedmsg;
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sym.visibility:=symtablestack.top.currentvisibility;
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symtablestack.top.insert(sym);
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{$ifdef jvm}
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{ for the JVM target, some constants need to be
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initialized at run time (enums, sets) -> create fake
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typed const to do so (at least if they are visible
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outside this routine, since we won't directly access
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these symbols in the generated code) }
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if (symtablestack.top.symtablelevel<normal_function_level) and
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assigned(tconstsym(sym).constdef) and
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(tconstsym(sym).constdef.typ in [enumdef,setdef]) then
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jvm_add_typed_const_initializer(tconstsym(sym));
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{$endif}
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end
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else
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stringdispose(deprecatedmsg);
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consume(_SEMICOLON);
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end;
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_COLON:
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begin
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if not allow_typed_const then
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begin
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Message(parser_e_no_typed_const);
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consume_all_until(_SEMICOLON);
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end;
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{ set the blocktype first so a consume also supports a
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caret, to support const s : ^string = nil }
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block_type:=bt_const_type;
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consume(_COLON);
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read_anon_type(hdef,false);
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block_type:=bt_const;
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skipequal:=false;
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{ create symbol }
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storetokenpos:=current_tokenpos;
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current_tokenpos:=filepos;
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if not (cs_typed_const_writable in current_settings.localswitches) then
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varspez:=vs_const
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else
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varspez:=vs_value;
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{ if we are dealing with structure const then we need to handle it as a
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structure static variable: create a symbol in unit symtable and a reference
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to it from the structure or linking will fail }
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if symtablestack.top.symtabletype in [recordsymtable,ObjectSymtable] then
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begin
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sym:=tfieldvarsym.create(orgname,varspez,hdef,[]);
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symtablestack.top.insert(sym);
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sym:=make_field_static(symtablestack.top,tfieldvarsym(sym));
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end
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else
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begin
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sym:=tstaticvarsym.create(orgname,varspez,hdef,[]);
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sym.visibility:=symtablestack.top.currentvisibility;
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symtablestack.top.insert(sym);
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end;
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current_tokenpos:=storetokenpos;
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{ procvar can have proc directives, but not type references }
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if (hdef.typ=procvardef) and
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(hdef.typesym=nil) then
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begin
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{ support p : procedure;stdcall=nil; }
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if try_to_consume(_SEMICOLON) then
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begin
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if check_proc_directive(true) then
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parse_var_proc_directives(sym)
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else
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begin
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Message(parser_e_proc_directive_expected);
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skipequal:=true;
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end;
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end
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else
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{ support p : procedure stdcall=nil; }
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begin
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if check_proc_directive(true) then
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parse_var_proc_directives(sym);
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end;
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{ add default calling convention }
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handle_calling_convention(tabstractprocdef(hdef));
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end;
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if not skipequal then
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begin
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{ get init value }
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consume(_EQ);
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if (cs_typed_const_writable in current_settings.localswitches) then
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tclist:=current_asmdata.asmlists[al_typedconsts]
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else
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tclist:=current_asmdata.asmlists[al_rotypedconsts];
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read_typed_const(tclist,tstaticvarsym(sym),in_structure);
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end;
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end;
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else
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{ generate an error }
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consume(_EQ);
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end;
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until (token<>_ID) or
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(in_structure and
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((idtoken in [_PRIVATE,_PROTECTED,_PUBLIC,_PUBLISHED,_STRICT]) or
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((m_final_fields in current_settings.modeswitches) and
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(idtoken=_FINAL))));
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block_type:=old_block_type;
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end;
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procedure label_dec;
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var
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labelsym : tlabelsym;
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begin
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consume(_LABEL);
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if not(cs_support_goto in current_settings.moduleswitches) then
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Message(sym_e_goto_and_label_not_supported);
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repeat
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if not(token in [_ID,_INTCONST]) then
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consume(_ID)
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else
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begin
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if token=_ID then
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labelsym:=tlabelsym.create(orgpattern)
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else
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labelsym:=tlabelsym.create(pattern);
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symtablestack.top.insert(labelsym);
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if m_non_local_goto in current_settings.modeswitches then
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begin
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if symtablestack.top.symtabletype=localsymtable then
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begin
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labelsym.jumpbuf:=tlocalvarsym.create('LABEL$_'+labelsym.name,vs_value,rec_jmp_buf,[]);
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symtablestack.top.insert(labelsym.jumpbuf);
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end
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else
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begin
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labelsym.jumpbuf:=tstaticvarsym.create('LABEL$_'+labelsym.name,vs_value,rec_jmp_buf,[]);
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symtablestack.top.insert(labelsym.jumpbuf);
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cnodeutils.insertbssdata(tstaticvarsym(labelsym.jumpbuf));
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end;
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include(labelsym.jumpbuf.symoptions,sp_internal);
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{ the buffer will be setup later, but avoid a hint }
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tabstractvarsym(labelsym.jumpbuf).varstate:=vs_written;
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end;
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consume(token);
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end;
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if token<>_SEMICOLON then consume(_COMMA);
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until not(token in [_ID,_INTCONST]);
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consume(_SEMICOLON);
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end;
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procedure types_dec(in_structure: boolean);
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function determine_generic_def(name:tidstring):tstoreddef;
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var
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hashedid : THashedIDString;
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pd : tprocdef;
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sym : tsym;
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begin
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result:=nil;
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{ check whether this is a declaration of a type inside a
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specialization }
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if assigned(current_structdef) and
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(df_specialization in current_structdef.defoptions) then
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begin
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if not assigned(current_structdef.genericdef) or
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not (current_structdef.genericdef.typ in [recorddef,objectdef]) then
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internalerror(2011052301);
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hashedid.id:=name;
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{ we could be inside a method of the specialization
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instead of its declaration, so check that first (as
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local nested types aren't allowed we don't need to
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walk the symtablestack to find the localsymtable) }
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if symtablestack.top.symtabletype=localsymtable then
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begin
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{ we are in a method }
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if not assigned(symtablestack.top.defowner) or
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(symtablestack.top.defowner.typ<>procdef) then
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internalerror(2011120701);
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pd:=tprocdef(symtablestack.top.defowner);
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if not assigned(pd.genericdef) or (pd.genericdef.typ<>procdef) then
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internalerror(2011120702);
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sym:=tsym(tprocdef(pd.genericdef).localst.findwithhash(hashedid));
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end
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else
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sym:=nil;
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if not assigned(sym) or not (sym.typ=typesym) then
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begin
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{ now search in the declaration of the generic }
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sym:=tsym(tabstractrecorddef(current_structdef.genericdef).symtable.findwithhash(hashedid));
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if not assigned(sym) or not (sym.typ=typesym) then
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internalerror(2011052302);
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end;
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{ use the corresponding type in the generic's symtable as
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genericdef for the specialized type }
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result:=tstoreddef(ttypesym(sym).typedef);
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end;
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end;
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procedure finalize_class_external_status(od: tobjectdef);
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begin
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if [oo_is_external,oo_is_forward] <= od.objectoptions then
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begin
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{ formal definition: x = objcclass external; }
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exclude(od.objectoptions,oo_is_forward);
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include(od.objectoptions,oo_is_formal);
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end;
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end;
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var
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typename,orgtypename,
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gentypename,genorgtypename : TIDString;
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newtype : ttypesym;
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sym : tsym;
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hdef : tdef;
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defpos,storetokenpos : tfileposinfo;
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old_block_type : tblock_type;
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old_checkforwarddefs: TFPObjectList;
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objecttype : tobjecttyp;
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isgeneric,
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isunique,
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istyperenaming : boolean;
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generictypelist : TFPObjectList;
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generictokenbuf : tdynamicarray;
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vmtbuilder : TVMTBuilder;
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p:tnode;
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gendef : tstoreddef;
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s : shortstring;
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{$ifdef x86}
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segment_register: string;
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{$endif x86}
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begin
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old_block_type:=block_type;
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{ save unit container of forward declarations -
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we can be inside nested class type block }
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old_checkforwarddefs:=current_module.checkforwarddefs;
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current_module.checkforwarddefs:=TFPObjectList.Create(false);
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block_type:=bt_type;
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hdef:=nil;
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repeat
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defpos:=current_tokenpos;
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istyperenaming:=false;
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generictypelist:=nil;
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generictokenbuf:=nil;
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{ fpc generic declaration? }
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isgeneric:=not(m_delphi in current_settings.modeswitches) and try_to_consume(_GENERIC);
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typename:=pattern;
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orgtypename:=orgpattern;
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consume(_ID);
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{ delphi generic declaration? }
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if (m_delphi in current_settings.modeswitches) then
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isgeneric:=token=_LSHARPBRACKET;
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{ Generic type declaration? }
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if isgeneric then
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begin
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if assigned(current_genericdef) then
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Message(parser_f_no_generic_inside_generic);
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consume(_LSHARPBRACKET);
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generictypelist:=parse_generic_parameters(true);
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consume(_RSHARPBRACKET);
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str(generictypelist.Count,s);
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gentypename:=typename+'$'+s;
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genorgtypename:=orgtypename+'$'+s;
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end
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else
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begin
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gentypename:=typename;
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genorgtypename:=orgtypename;
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end;
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consume(_EQ);
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{ support 'ttype=type word' syntax }
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isunique:=try_to_consume(_TYPE);
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{ MacPas object model is more like Delphi's than like TP's, but }
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{ uses the object keyword instead of class }
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if (m_mac in current_settings.modeswitches) and
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(token = _OBJECT) then
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token := _CLASS;
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{ Start recording a generic template }
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if assigned(generictypelist) then
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begin
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generictokenbuf:=tdynamicarray.create(256);
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current_scanner.startrecordtokens(generictokenbuf);
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end;
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{ is the type already defined? -- must be in the current symtable,
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not in a nested symtable or one higher up the stack -> don't
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use searchsym & frinds! }
|
|
sym:=tsym(symtablestack.top.find(gentypename));
|
|
newtype:=nil;
|
|
{ found a symbol with this name? }
|
|
if assigned(sym) then
|
|
begin
|
|
if (sym.typ=typesym) and
|
|
{ this should not be a symbol that was created by a generic
|
|
that was declared earlier }
|
|
not (
|
|
(ttypesym(sym).typedef.typ=undefineddef) and
|
|
(sp_generic_dummy in sym.symoptions)
|
|
) then
|
|
begin
|
|
if ((token=_CLASS) or
|
|
(token=_INTERFACE) or
|
|
(token=_DISPINTERFACE) or
|
|
(token=_OBJCCLASS) or
|
|
(token=_OBJCPROTOCOL) or
|
|
(token=_OBJCCATEGORY)) and
|
|
(assigned(ttypesym(sym).typedef)) and
|
|
is_implicit_pointer_object_type(ttypesym(sym).typedef) and
|
|
(oo_is_forward in tobjectdef(ttypesym(sym).typedef).objectoptions) then
|
|
begin
|
|
case token of
|
|
_CLASS :
|
|
objecttype:=default_class_type;
|
|
_INTERFACE :
|
|
case current_settings.interfacetype of
|
|
it_interfacecom:
|
|
objecttype:=odt_interfacecom;
|
|
it_interfacecorba:
|
|
objecttype:=odt_interfacecorba;
|
|
it_interfacejava:
|
|
objecttype:=odt_interfacejava;
|
|
else
|
|
internalerror(2010122611);
|
|
end;
|
|
_DISPINTERFACE :
|
|
objecttype:=odt_dispinterface;
|
|
_OBJCCLASS,
|
|
_OBJCCATEGORY :
|
|
objecttype:=odt_objcclass;
|
|
_OBJCPROTOCOL :
|
|
objecttype:=odt_objcprotocol;
|
|
else
|
|
internalerror(200811072);
|
|
end;
|
|
consume(token);
|
|
{ determine the generic def in case we are in a nested type
|
|
of a specialization }
|
|
gendef:=determine_generic_def(gentypename);
|
|
{ we can ignore the result, the definition is modified }
|
|
object_dec(objecttype,genorgtypename,newtype,gendef,generictypelist,tobjectdef(ttypesym(sym).typedef),ht_none);
|
|
newtype:=ttypesym(sym);
|
|
hdef:=newtype.typedef;
|
|
end
|
|
else
|
|
message1(parser_h_type_redef,genorgtypename);
|
|
end;
|
|
end;
|
|
{ no old type reused ? Then insert this new type }
|
|
if not assigned(newtype) then
|
|
begin
|
|
{ insert the new type first with an errordef, so that
|
|
referencing the type before it's really set it
|
|
will give an error (PFV) }
|
|
hdef:=generrordef;
|
|
gendef:=nil;
|
|
storetokenpos:=current_tokenpos;
|
|
if isgeneric then
|
|
begin
|
|
{ for generics we need to check whether a non-generic type
|
|
already exists and if not we need to insert a symbol with
|
|
the non-generic name (available in (org)typename) that is a
|
|
undefineddef, so that inline specializations can be used }
|
|
sym:=tsym(symtablestack.top.Find(typename));
|
|
if not assigned(sym) then
|
|
begin
|
|
sym:=ttypesym.create(orgtypename,tundefineddef.create);
|
|
Include(sym.symoptions,sp_generic_dummy);
|
|
ttypesym(sym).typedef.typesym:=sym;
|
|
sym.visibility:=symtablestack.top.currentvisibility;
|
|
symtablestack.top.insert(sym);
|
|
ttypesym(sym).typedef.owner:=sym.owner;
|
|
end
|
|
else
|
|
{ this is not allowed in non-Delphi modes }
|
|
if not (m_delphi in current_settings.modeswitches) then
|
|
Message1(sym_e_duplicate_id,genorgtypename)
|
|
else
|
|
{ we need to find this symbol even if it's a variable or
|
|
something else when doing an inline specialization }
|
|
Include(sym.symoptions,sp_generic_dummy);
|
|
end
|
|
else
|
|
begin
|
|
if assigned(sym) and (sym.typ=typesym) and
|
|
(ttypesym(sym).typedef.typ=undefineddef) and
|
|
(sp_generic_dummy in sym.symoptions) then
|
|
begin
|
|
{ this is a symbol that was added by an earlier generic
|
|
declaration, reuse it }
|
|
newtype:=ttypesym(sym);
|
|
newtype.typedef:=hdef;
|
|
sym:=nil;
|
|
end;
|
|
|
|
{ determine the generic def in case we are in a nested type
|
|
of a specialization }
|
|
gendef:=determine_generic_def(gentypename);
|
|
end;
|
|
{ insert a new type if we don't reuse an existing symbol }
|
|
if not assigned(newtype) then
|
|
begin
|
|
newtype:=ttypesym.create(genorgtypename,hdef);
|
|
newtype.visibility:=symtablestack.top.currentvisibility;
|
|
symtablestack.top.insert(newtype);
|
|
end;
|
|
current_tokenpos:=defpos;
|
|
current_tokenpos:=storetokenpos;
|
|
{ read the type definition }
|
|
read_named_type(hdef,newtype,gendef,generictypelist,false,isunique);
|
|
{ update the definition of the type }
|
|
if assigned(hdef) then
|
|
begin
|
|
if df_generic in hdef.defoptions then
|
|
{ flag parent symtables that they now contain a generic }
|
|
hdef.owner.includeoption(sto_has_generic);
|
|
if assigned(hdef.typesym) then
|
|
begin
|
|
istyperenaming:=true;
|
|
include(newtype.symoptions,sp_explicitrename);
|
|
end;
|
|
if isunique then
|
|
begin
|
|
if is_objc_class_or_protocol(hdef) or
|
|
is_java_class_or_interface(hdef) then
|
|
Message(parser_e_unique_unsupported);
|
|
|
|
hdef:=tstoreddef(hdef).getcopy;
|
|
|
|
{ check if it is an ansistirng(codepage) declaration }
|
|
if is_ansistring(hdef) and try_to_consume(_LKLAMMER) then
|
|
begin
|
|
p:=comp_expr(true,false);
|
|
consume(_RKLAMMER);
|
|
if not is_constintnode(p) then
|
|
begin
|
|
Message(parser_e_illegal_expression);
|
|
{ error recovery }
|
|
end
|
|
else
|
|
begin
|
|
if (tordconstnode(p).value<0) or (tordconstnode(p).value>65535) then
|
|
begin
|
|
Message(parser_e_invalid_codepage);
|
|
tordconstnode(p).value:=0;
|
|
end;
|
|
tstringdef(hdef).encoding:=int64(tordconstnode(p).value);
|
|
end;
|
|
p.free;
|
|
end;
|
|
|
|
{ fix name, it is used e.g. for tables }
|
|
if is_class_or_interface_or_dispinterface(hdef) then
|
|
with tobjectdef(hdef) do
|
|
begin
|
|
stringdispose(objname);
|
|
stringdispose(objrealname);
|
|
objrealname:=stringdup(genorgtypename);
|
|
objname:=stringdup(upper(genorgtypename));
|
|
end;
|
|
|
|
include(hdef.defoptions,df_unique);
|
|
if (hdef.typ in [pointerdef,classrefdef]) and
|
|
(tabstractpointerdef(hdef).pointeddef.typ=forwarddef) then
|
|
current_module.checkforwarddefs.add(hdef);
|
|
end;
|
|
if not assigned(hdef.typesym) then
|
|
hdef.typesym:=newtype;
|
|
end;
|
|
{ in non-Delphi modes we need a reference to the generic def
|
|
without the generic suffix, so it can be found easily when
|
|
parsing method implementations }
|
|
if isgeneric and assigned(sym) and
|
|
not (m_delphi in current_settings.modeswitches) and
|
|
(ttypesym(sym).typedef.typ=undefineddef) then
|
|
{ don't free the undefineddef as the defids rely on the count
|
|
of the defs in the def list of the module}
|
|
ttypesym(sym).typedef:=hdef;
|
|
newtype.typedef:=hdef;
|
|
{ KAZ: handle TGUID declaration in system unit }
|
|
if (cs_compilesystem in current_settings.moduleswitches) and not assigned(rec_tguid) and
|
|
(gentypename='TGUID') and { name: TGUID and size=16 bytes that is 128 bits }
|
|
assigned(hdef) and (hdef.typ=recorddef) and (hdef.size=16) then
|
|
rec_tguid:=trecorddef(hdef);
|
|
end;
|
|
if assigned(hdef) then
|
|
begin
|
|
case hdef.typ of
|
|
pointerdef :
|
|
begin
|
|
try_consume_hintdirective(newtype.symoptions,newtype.deprecatedmsg);
|
|
consume(_SEMICOLON);
|
|
{$ifdef x86}
|
|
if try_to_consume(_FAR) then
|
|
begin
|
|
{$if defined(i8086)}
|
|
tpointerdef(hdef).x86pointertyp:=x86pt_far;
|
|
{$elseif defined(i386)}
|
|
tpointerdef(hdef).x86pointertyp:=x86pt_near_fs;
|
|
{$elseif defined(x86_64)}
|
|
{ for compatibility with previous versions of fpc,
|
|
far pointer = regular pointer on x86_64 }
|
|
{ TODO: decide if we still want to keep this }
|
|
{$endif}
|
|
consume(_SEMICOLON);
|
|
end
|
|
else
|
|
if try_to_consume(_NEAR) then
|
|
begin
|
|
if token <> _SEMICOLON then
|
|
begin
|
|
segment_register:=get_stringconst;
|
|
case UpCase(segment_register) of
|
|
'CS': tpointerdef(hdef).x86pointertyp:=x86pt_near_cs;
|
|
'DS': tpointerdef(hdef).x86pointertyp:=x86pt_near_ds;
|
|
'SS': tpointerdef(hdef).x86pointertyp:=x86pt_near_ss;
|
|
'ES': tpointerdef(hdef).x86pointertyp:=x86pt_near_es;
|
|
'FS': tpointerdef(hdef).x86pointertyp:=x86pt_near_fs;
|
|
'GS': tpointerdef(hdef).x86pointertyp:=x86pt_near_gs;
|
|
else
|
|
Message(asmr_e_invalid_register);
|
|
end;
|
|
end
|
|
else
|
|
tpointerdef(hdef).x86pointertyp:=x86pt_near;
|
|
consume(_SEMICOLON);
|
|
end;
|
|
{$else x86}
|
|
{ Previous versions of FPC support declaring a pointer as
|
|
far even on non-x86 platforms.
|
|
TODO: decide if we still want to keep this }
|
|
if try_to_consume(_FAR) then
|
|
begin
|
|
consume(_SEMICOLON);
|
|
end;
|
|
{$endif x86}
|
|
end;
|
|
procvardef :
|
|
begin
|
|
{ in case of type renaming, don't parse proc directives }
|
|
if istyperenaming then
|
|
begin
|
|
try_consume_hintdirective(newtype.symoptions,newtype.deprecatedmsg);
|
|
consume(_SEMICOLON);
|
|
end
|
|
else
|
|
begin
|
|
if not check_proc_directive(true) then
|
|
begin
|
|
try_consume_hintdirective(newtype.symoptions,newtype.deprecatedmsg);
|
|
consume(_SEMICOLON);
|
|
end;
|
|
parse_var_proc_directives(tsym(newtype));
|
|
handle_calling_convention(tprocvardef(hdef));
|
|
if try_consume_hintdirective(newtype.symoptions,newtype.deprecatedmsg) then
|
|
consume(_SEMICOLON);
|
|
end;
|
|
end;
|
|
objectdef :
|
|
begin
|
|
try_consume_hintdirective(newtype.symoptions,newtype.deprecatedmsg);
|
|
consume(_SEMICOLON);
|
|
|
|
{ change a forward and external class declaration into
|
|
formal external definition, so the compiler does not
|
|
expect an real definition later }
|
|
if is_objc_class_or_protocol(hdef) or
|
|
is_java_class_or_interface(hdef) then
|
|
finalize_class_external_status(tobjectdef(hdef));
|
|
|
|
{ Build VMT indexes, skip for type renaming and forward classes }
|
|
if (hdef.typesym=newtype) and
|
|
not(oo_is_forward in tobjectdef(hdef).objectoptions) and
|
|
not(df_generic in hdef.defoptions) then
|
|
begin
|
|
vmtbuilder:=TVMTBuilder.Create(tobjectdef(hdef));
|
|
vmtbuilder.generate_vmt;
|
|
vmtbuilder.free;
|
|
end;
|
|
|
|
{ In case of an objcclass, verify that all methods have a message
|
|
name set. We only check this now, because message names can be set
|
|
during the protocol (interface) mapping. At the same time, set the
|
|
mangled names (these depend on the "external" name of the class),
|
|
and mark private fields of external classes as "used" (to avoid
|
|
bogus notes about them being unused)
|
|
}
|
|
{ watch out for crashes in case of errors }
|
|
if is_objc_class_or_protocol(hdef) and
|
|
(not is_objccategory(hdef) or
|
|
assigned(tobjectdef(hdef).childof)) then
|
|
tobjectdef(hdef).finish_objc_data;
|
|
|
|
if is_cppclass(hdef) then
|
|
tobjectdef(hdef).finish_cpp_data;
|
|
end;
|
|
recorddef :
|
|
begin
|
|
try_consume_hintdirective(newtype.symoptions,newtype.deprecatedmsg);
|
|
consume(_SEMICOLON);
|
|
end;
|
|
else
|
|
begin
|
|
try_consume_hintdirective(newtype.symoptions,newtype.deprecatedmsg);
|
|
consume(_SEMICOLON);
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
if isgeneric and (not(hdef.typ in [objectdef,recorddef,arraydef,procvardef])
|
|
or is_objectpascal_helper(hdef)) then
|
|
message(parser_e_cant_create_generics_of_this_type);
|
|
|
|
{ Stop recording a generic template }
|
|
if assigned(generictypelist) then
|
|
begin
|
|
current_scanner.stoprecordtokens;
|
|
tstoreddef(hdef).generictokenbuf:=generictokenbuf;
|
|
{ Generic is never a type renaming }
|
|
hdef.typesym:=newtype;
|
|
generictypelist.free;
|
|
end;
|
|
until (token<>_ID) or
|
|
(in_structure and
|
|
((idtoken in [_PRIVATE,_PROTECTED,_PUBLIC,_PUBLISHED,_STRICT]) or
|
|
((m_final_fields in current_settings.modeswitches) and
|
|
(idtoken=_FINAL))));
|
|
{ resolve type block forward declarations and restore a unit
|
|
container for them }
|
|
resolve_forward_types;
|
|
current_module.checkforwarddefs.free;
|
|
current_module.checkforwarddefs:=old_checkforwarddefs;
|
|
block_type:=old_block_type;
|
|
end;
|
|
|
|
|
|
{ reads a type declaration to the symbol table }
|
|
procedure type_dec;
|
|
begin
|
|
consume(_TYPE);
|
|
types_dec(false);
|
|
end;
|
|
|
|
|
|
procedure var_dec;
|
|
{ parses variable declarations and inserts them in }
|
|
{ the top symbol table of symtablestack }
|
|
begin
|
|
consume(_VAR);
|
|
read_var_decls([]);
|
|
end;
|
|
|
|
|
|
procedure property_dec;
|
|
{ parses a global property (fpc mode feature) }
|
|
var
|
|
old_block_type: tblock_type;
|
|
begin
|
|
consume(_PROPERTY);
|
|
if not(symtablestack.top.symtabletype in [staticsymtable,globalsymtable]) then
|
|
message(parser_e_property_only_sgr);
|
|
old_block_type:=block_type;
|
|
block_type:=bt_const;
|
|
repeat
|
|
read_property_dec(false, nil);
|
|
consume(_SEMICOLON);
|
|
until token<>_ID;
|
|
block_type:=old_block_type;
|
|
end;
|
|
|
|
|
|
procedure threadvar_dec;
|
|
{ parses thread variable declarations and inserts them in }
|
|
{ the top symbol table of symtablestack }
|
|
begin
|
|
consume(_THREADVAR);
|
|
if not(symtablestack.top.symtabletype in [staticsymtable,globalsymtable]) then
|
|
message(parser_e_threadvars_only_sg);
|
|
if f_threading in features then
|
|
read_var_decls([vd_threadvar])
|
|
else
|
|
begin
|
|
Message(parser_f_unsupported_feature);
|
|
read_var_decls([]);
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure resourcestring_dec;
|
|
var
|
|
orgname : TIDString;
|
|
p : tnode;
|
|
dummysymoptions : tsymoptions;
|
|
deprecatedmsg : pshortstring;
|
|
storetokenpos,filepos : tfileposinfo;
|
|
old_block_type : tblock_type;
|
|
sp : pchar;
|
|
sym : tsym;
|
|
begin
|
|
if target_info.system in systems_managed_vm then
|
|
message(parser_e_feature_unsupported_for_vm);
|
|
consume(_RESOURCESTRING);
|
|
if not(symtablestack.top.symtabletype in [staticsymtable,globalsymtable]) then
|
|
message(parser_e_resourcestring_only_sg);
|
|
old_block_type:=block_type;
|
|
block_type:=bt_const;
|
|
repeat
|
|
orgname:=orgpattern;
|
|
filepos:=current_tokenpos;
|
|
consume(_ID);
|
|
case token of
|
|
_EQ:
|
|
begin
|
|
consume(_EQ);
|
|
p:=comp_expr(true,false);
|
|
storetokenpos:=current_tokenpos;
|
|
current_tokenpos:=filepos;
|
|
sym:=nil;
|
|
case p.nodetype of
|
|
ordconstn:
|
|
begin
|
|
if is_constcharnode(p) then
|
|
begin
|
|
getmem(sp,2);
|
|
sp[0]:=chr(tordconstnode(p).value.svalue);
|
|
sp[1]:=#0;
|
|
sym:=tconstsym.create_string(orgname,constresourcestring,sp,1,nil);
|
|
end
|
|
else
|
|
Message(parser_e_illegal_expression);
|
|
end;
|
|
stringconstn:
|
|
with Tstringconstnode(p) do
|
|
begin
|
|
{ resourcestrings are currently always single byte }
|
|
if cst_type in [cst_widestring,cst_unicodestring] then
|
|
changestringtype(getansistringdef);
|
|
getmem(sp,len+1);
|
|
move(value_str^,sp^,len+1);
|
|
sym:=tconstsym.create_string(orgname,constresourcestring,sp,len,nil);
|
|
end;
|
|
else
|
|
Message(parser_e_illegal_expression);
|
|
end;
|
|
current_tokenpos:=storetokenpos;
|
|
{ Support hint directives }
|
|
dummysymoptions:=[];
|
|
deprecatedmsg:=nil;
|
|
try_consume_hintdirective(dummysymoptions,deprecatedmsg);
|
|
if assigned(sym) then
|
|
begin
|
|
sym.symoptions:=sym.symoptions+dummysymoptions;
|
|
sym.deprecatedmsg:=deprecatedmsg;
|
|
symtablestack.top.insert(sym);
|
|
end
|
|
else
|
|
stringdispose(deprecatedmsg);
|
|
consume(_SEMICOLON);
|
|
p.free;
|
|
end;
|
|
else consume(_EQ);
|
|
end;
|
|
until token<>_ID;
|
|
block_type:=old_block_type;
|
|
end;
|
|
|
|
end.
|