mirror of
https://gitlab.com/freepascal.org/fpc/source.git
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4371 lines
141 KiB
ObjectPascal
4371 lines
141 KiB
ObjectPascal
{
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Copyright (c) 1998-2002 by Florian Klaempfl
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This unit implements the scanner part and handling of the switches
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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 scanner;
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{$i fpcdefs.inc}
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interface
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uses
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cclasses,
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globtype,globals,constexp,version,tokens,
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verbose,comphook,
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finput,
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widestr;
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const
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max_include_nesting=32;
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max_macro_nesting=16;
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preprocbufsize=32*1024;
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type
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tcommentstyle = (comment_none,comment_tp,comment_oldtp,comment_delphi,comment_c);
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tscannerfile = class;
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preproctyp = (pp_ifdef,pp_ifndef,pp_if,pp_ifopt,pp_else,pp_elseif);
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tpreprocstack = class
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typ : preproctyp;
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accept : boolean;
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next : tpreprocstack;
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name : TIDString;
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line_nb : longint;
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owner : tscannerfile;
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constructor Create(atyp:preproctyp;a:boolean;n:tpreprocstack);
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end;
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tdirectiveproc=procedure;
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tdirectiveitem = class(TFPHashObject)
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public
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is_conditional : boolean;
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proc : tdirectiveproc;
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constructor Create(AList:TFPHashObjectList;const n:string;p:tdirectiveproc);
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constructor CreateCond(AList:TFPHashObjectList;const n:string;p:tdirectiveproc);
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end;
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// stack for replay buffers
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treplaystack = class
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token : ttoken;
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settings : tsettings;
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tokenbuf : tdynamicarray;
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next : treplaystack;
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constructor Create(atoken: ttoken;asettings:tsettings;atokenbuf:tdynamicarray;anext:treplaystack);
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end;
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tcompile_time_predicate = function(var valuedescr: String) : Boolean;
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tspecialgenerictoken = (ST_LOADSETTINGS,ST_LINE,ST_COLUMN,ST_FILEINDEX);
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tscannerfile = class
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private
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procedure do_gettokenpos(out tokenpos: longint; out filepos: tfileposinfo);
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procedure cachenexttokenpos;
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procedure setnexttoken;
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procedure savetokenpos;
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procedure restoretokenpos;
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public
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inputfile : tinputfile; { current inputfile list }
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inputfilecount : longint;
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inputbuffer, { input buffer }
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inputpointer : pchar;
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inputstart : longint;
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line_no, { line }
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lastlinepos : longint;
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lasttokenpos,
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nexttokenpos : longint; { token }
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lasttoken,
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nexttoken : ttoken;
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oldlasttokenpos : longint; { temporary saving/restoring tokenpos }
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oldcurrent_filepos,
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oldcurrent_tokenpos : tfileposinfo;
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replaytokenbuf,
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recordtokenbuf : tdynamicarray;
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{ last settings we stored }
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last_settings : tsettings;
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{ last filepos we stored }
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last_filepos,
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{ if nexttoken<>NOTOKEN, then nexttokenpos holds its filepos }
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next_filepos : tfileposinfo;
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comment_level,
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yylexcount : longint;
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lastasmgetchar : char;
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ignoredirectives : TFPHashList; { ignore directives, used to give warnings only once }
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preprocstack : tpreprocstack;
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replaystack : treplaystack;
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in_asm_string : boolean;
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preproc_pattern : string;
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preproc_token : ttoken;
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constructor Create(const fn:string);
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destructor Destroy;override;
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{ File buffer things }
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function openinputfile:boolean;
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procedure closeinputfile;
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function tempopeninputfile:boolean;
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procedure tempcloseinputfile;
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procedure saveinputfile;
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procedure restoreinputfile;
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procedure firstfile;
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procedure nextfile;
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procedure addfile(hp:tinputfile);
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procedure reload;
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procedure insertmacro(const macname:string;p:pchar;len,line,fileindex:longint);
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{ Scanner things }
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procedure gettokenpos;
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procedure inc_comment_level;
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procedure dec_comment_level;
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procedure illegal_char(c:char);
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procedure end_of_file;
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procedure checkpreprocstack;
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procedure poppreprocstack;
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procedure ifpreprocstack(atyp : preproctyp;compile_time_predicate:tcompile_time_predicate;messid:longint);
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procedure elseifpreprocstack(compile_time_predicate:tcompile_time_predicate);
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procedure elsepreprocstack;
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procedure popreplaystack;
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procedure handleconditional(p:tdirectiveitem);
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procedure handledirectives;
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procedure linebreak;
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procedure recordtoken;
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procedure startrecordtokens(buf:tdynamicarray);
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procedure stoprecordtokens;
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procedure replaytoken;
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procedure startreplaytokens(buf:tdynamicarray);
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procedure readchar;
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procedure readstring;
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procedure readnumber;
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function readid:string;
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function readval:longint;
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function readval_asstring:string;
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function readcomment:string;
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function readquotedstring:string;
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function readstate:char;
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function readstatedefault:char;
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procedure skipspace;
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procedure skipuntildirective;
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procedure skipcomment;
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procedure skipdelphicomment;
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procedure skipoldtpcomment;
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procedure readtoken(allowrecordtoken:boolean);
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function readpreproc:ttoken;
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function asmgetcharstart : char;
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function asmgetchar:char;
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end;
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{$ifdef PREPROCWRITE}
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tpreprocfile=class
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f : text;
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buf : pointer;
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spacefound,
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eolfound : boolean;
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constructor create(const fn:string);
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destructor destroy;
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procedure Add(const s:string);
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procedure AddSpace;
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end;
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{$endif PREPROCWRITE}
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var
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{ read strings }
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c : char;
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orgpattern,
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pattern : string;
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cstringpattern : ansistring;
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patternw : pcompilerwidestring;
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{ token }
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token, { current token being parsed }
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idtoken : ttoken; { holds the token if the pattern is a known word }
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current_scanner : tscannerfile; { current scanner in use }
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aktcommentstyle : tcommentstyle; { needed to use read_comment from directives }
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{$ifdef PREPROCWRITE}
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preprocfile : tpreprocfile; { used with only preprocessing }
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{$endif PREPROCWRITE}
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type
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tdirectivemode = (directive_all, directive_turbo, directive_mac);
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procedure AddDirective(const s:string; dm: tdirectivemode; p:tdirectiveproc);
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procedure AddConditional(const s:string; dm: tdirectivemode; p:tdirectiveproc);
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procedure InitScanner;
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procedure DoneScanner;
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{ To be called when the language mode is finally determined }
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Function SetCompileMode(const s:string; changeInit: boolean):boolean;
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Function SetCompileModeSwitch(s:string; changeInit: boolean):boolean;
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implementation
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uses
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SysUtils,
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cutils,cfileutl,
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systems,
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switches,
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symbase,symtable,symtype,symsym,symconst,symdef,defutil,
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fmodule;
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var
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{ dictionaries with the supported directives }
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turbo_scannerdirectives : TFPHashObjectList; { for other modes }
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mac_scannerdirectives : TFPHashObjectList; { for mode mac }
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{*****************************************************************************
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Helper routines
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*****************************************************************************}
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const
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{ use any special name that is an invalid file name to avoid problems }
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preprocstring : array [preproctyp] of string[7]
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= ('$IFDEF','$IFNDEF','$IF','$IFOPT','$ELSE','$ELSEIF');
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function is_keyword(const s:string):boolean;
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var
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low,high,mid : longint;
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begin
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if not (length(s) in [tokenlenmin..tokenlenmax]) or
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not (s[1] in ['a'..'z','A'..'Z']) then
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begin
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is_keyword:=false;
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exit;
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end;
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low:=ord(tokenidx^[length(s),s[1]].first);
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high:=ord(tokenidx^[length(s),s[1]].last);
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while low<high do
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begin
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mid:=(high+low+1) shr 1;
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if pattern<tokeninfo^[ttoken(mid)].str then
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high:=mid-1
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else
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low:=mid;
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end;
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is_keyword:=(pattern=tokeninfo^[ttoken(high)].str) and
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(tokeninfo^[ttoken(high)].keyword in current_settings.modeswitches);
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end;
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Procedure HandleModeSwitches(changeInit: boolean);
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begin
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{ turn ansistrings on by default ? }
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if (m_default_ansistring in current_settings.modeswitches) then
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begin
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include(current_settings.localswitches,cs_ansistrings);
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if changeinit then
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include(init_settings.localswitches,cs_ansistrings);
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end
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else
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begin
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exclude(current_settings.localswitches,cs_ansistrings);
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if changeinit then
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exclude(init_settings.localswitches,cs_ansistrings);
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end;
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{ turn inline on by default ? }
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if (m_default_inline in current_settings.modeswitches) then
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begin
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include(current_settings.localswitches,cs_do_inline);
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if changeinit then
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include(init_settings.localswitches,cs_do_inline);
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end
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else
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begin
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exclude(current_settings.localswitches,cs_ansistrings);
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if changeinit then
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exclude(init_settings.localswitches,cs_ansistrings);
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end;
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end;
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Function SetCompileMode(const s:string; changeInit: boolean):boolean;
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var
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b : boolean;
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oldmodeswitches : tmodeswitches;
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begin
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oldmodeswitches:=current_settings.modeswitches;
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b:=true;
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if s='DEFAULT' then
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current_settings.modeswitches:=fpcmodeswitches
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else
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if s='DELPHI' then
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current_settings.modeswitches:=delphimodeswitches
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else
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if s='TP' then
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current_settings.modeswitches:=tpmodeswitches
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else
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if s='FPC' then begin
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current_settings.modeswitches:=fpcmodeswitches;
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{ TODO: enable this for 2.3/2.9 }
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// include(current_settings.localswitches, cs_typed_addresses);
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end else
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if s='OBJFPC' then begin
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current_settings.modeswitches:=objfpcmodeswitches;
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{ TODO: enable this for 2.3/2.9 }
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// include(current_settings.localswitches, cs_typed_addresses);
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end
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{$ifdef gpc_mode}
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else if s='GPC' then
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current_settings.modeswitches:=gpcmodeswitches
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{$endif}
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else
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if s='MACPAS' then
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current_settings.modeswitches:=macmodeswitches
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else
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b:=false;
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if b and changeInit then
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init_settings.modeswitches := current_settings.modeswitches;
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if b then
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begin
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{ resolve all postponed switch changes }
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flushpendingswitchesstate;
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HandleModeSwitches(changeinit);
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{ turn on bitpacking for mode macpas }
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if (m_mac in current_settings.modeswitches) then
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begin
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include(current_settings.localswitches,cs_bitpacking);
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if changeinit then
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include(init_settings.localswitches,cs_bitpacking);
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end;
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{ support goto/label by default in delphi/tp7/mac modes }
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if ([m_delphi,m_tp7,m_mac] * current_settings.modeswitches <> []) then
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begin
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include(current_settings.moduleswitches,cs_support_goto);
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if changeinit then
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include(init_settings.moduleswitches,cs_support_goto);
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end;
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{ Default enum and set packing for delphi/tp7 }
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if (m_tp7 in current_settings.modeswitches) or
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(m_delphi in current_settings.modeswitches) then
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begin
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current_settings.packenum:=1;
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current_settings.setalloc:=1;
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end
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else if (m_mac in current_settings.modeswitches) then
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{ compatible with Metrowerks Pascal }
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current_settings.packenum:=2
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else
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current_settings.packenum:=4;
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if changeinit then
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init_settings.packenum:=current_settings.packenum;
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{$ifdef i386}
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{ Default to intel assembler for delphi/tp7 on i386 }
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if (m_delphi in current_settings.modeswitches) or
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(m_tp7 in current_settings.modeswitches) then
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current_settings.asmmode:=asmmode_i386_intel;
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if changeinit then
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init_settings.asmmode:=current_settings.asmmode;
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{$endif i386}
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{ Exception support explicitly turned on (mainly for macpas, to }
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{ compensate for lack of interprocedural goto support) }
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if (cs_support_exceptions in current_settings.globalswitches) then
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include(current_settings.modeswitches,m_except);
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{ Default strict string var checking in TP/Delphi modes }
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if ([m_delphi,m_tp7] * current_settings.modeswitches <> []) then
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begin
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include(current_settings.localswitches,cs_strict_var_strings);
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if changeinit then
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include(init_settings.localswitches,cs_strict_var_strings);
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end;
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{ Undefine old symbol }
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if (m_delphi in oldmodeswitches) then
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undef_system_macro('FPC_DELPHI')
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else if (m_tp7 in oldmodeswitches) then
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undef_system_macro('FPC_TP')
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else if (m_objfpc in oldmodeswitches) then
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undef_system_macro('FPC_OBJFPC')
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{$ifdef gpc_mode}
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else if (m_gpc in oldmodeswitches) then
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undef_system_macro('FPC_GPC')
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{$endif}
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else if (m_mac in oldmodeswitches) then
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undef_system_macro('FPC_MACPAS');
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{ define new symbol in delphi,objfpc,tp,gpc,macpas mode }
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if (m_delphi in current_settings.modeswitches) then
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def_system_macro('FPC_DELPHI')
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else if (m_tp7 in current_settings.modeswitches) then
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def_system_macro('FPC_TP')
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else if (m_objfpc in current_settings.modeswitches) then
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def_system_macro('FPC_OBJFPC')
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{$ifdef gpc_mode}
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else if (m_gpc in current_settings.modeswitches) then
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def_system_macro('FPC_GPC')
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{$endif}
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else if (m_mac in current_settings.modeswitches) then
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def_system_macro('FPC_MACPAS');
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end;
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SetCompileMode:=b;
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end;
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Function SetCompileModeSwitch(s:string; changeInit: boolean):boolean;
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var
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i : tmodeswitch;
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doinclude : boolean;
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begin
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s:=upper(s);
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{ on/off? }
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doinclude:=true;
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case s[length(s)] of
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'+':
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s:=copy(s,1,length(s)-1);
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'-':
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begin
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s:=copy(s,1,length(s)-1);
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doinclude:=false;
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end;
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end;
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Result:=false;
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for i:=m_class to high(tmodeswitch) do
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if s=modeswitchstr[i] then
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begin
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{ Objective-C is currently only supported for 32 bit Darwin targets
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(and Objective-C 2.0 will be required for 64 bit ones)
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Not yet tested for ARM either.
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}
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if doinclude and
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(i=m_objectivec1) and
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not(target_info.system in systems_objc_supported) then
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begin
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Message1(option_unsupported_target_for_feature,'Objective-C');
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break;
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end;
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if changeInit then
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current_settings.modeswitches:=init_settings.modeswitches;
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Result:=true;
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if doinclude then
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begin
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include(current_settings.modeswitches,i);
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if (i=m_objectivec1) then
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include(current_settings.modeswitches,m_class);
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end
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else
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begin
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exclude(current_settings.modeswitches,i);
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if (i=m_objectivec1) and
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([m_delphi,m_objfpc]*current_settings.modeswitches=[]) then
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exclude(current_settings.modeswitches,m_class);
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end;
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{ set other switches depending on changed mode switch }
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HandleModeSwitches(changeinit);
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if changeInit then
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init_settings.modeswitches:=current_settings.modeswitches;
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break;
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end;
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end;
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{*****************************************************************************
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Conditional Directives
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*****************************************************************************}
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procedure dir_else;
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begin
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current_scanner.elsepreprocstack;
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end;
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procedure dir_endif;
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begin
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current_scanner.poppreprocstack;
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end;
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|
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function isdef(var valuedescr: String): Boolean;
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var
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hs : string;
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begin
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current_scanner.skipspace;
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hs:=current_scanner.readid;
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valuedescr:= hs;
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if hs='' then
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Message(scan_e_error_in_preproc_expr);
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isdef:=defined_macro(hs);
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end;
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|
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procedure dir_ifdef;
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begin
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current_scanner.ifpreprocstack(pp_ifdef,@isdef,scan_c_ifdef_found);
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end;
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|
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function isnotdef(var valuedescr: String): Boolean;
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var
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hs : string;
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begin
|
|
current_scanner.skipspace;
|
|
hs:=current_scanner.readid;
|
|
valuedescr:= hs;
|
|
if hs='' then
|
|
Message(scan_e_error_in_preproc_expr);
|
|
isnotdef:=not defined_macro(hs);
|
|
end;
|
|
|
|
procedure dir_ifndef;
|
|
begin
|
|
current_scanner.ifpreprocstack(pp_ifndef,@isnotdef,scan_c_ifndef_found);
|
|
end;
|
|
|
|
function opt_check(var valuedescr: String): Boolean;
|
|
var
|
|
hs : string;
|
|
state : char;
|
|
begin
|
|
opt_check:= false;
|
|
current_scanner.skipspace;
|
|
hs:=current_scanner.readid;
|
|
valuedescr:= hs;
|
|
if (length(hs)>1) then
|
|
Message1(scan_w_illegal_switch,hs)
|
|
else
|
|
begin
|
|
state:=current_scanner.ReadState;
|
|
if state in ['-','+'] then
|
|
opt_check:=CheckSwitch(hs[1],state)
|
|
else
|
|
Message(scan_e_error_in_preproc_expr);
|
|
end;
|
|
end;
|
|
|
|
procedure dir_ifopt;
|
|
begin
|
|
flushpendingswitchesstate;
|
|
current_scanner.ifpreprocstack(pp_ifopt,@opt_check,scan_c_ifopt_found);
|
|
end;
|
|
|
|
procedure dir_libprefix;
|
|
var
|
|
s : string;
|
|
begin
|
|
current_scanner.skipspace;
|
|
if c <> '''' then
|
|
Message2(scan_f_syn_expected, '''', c);
|
|
s := current_scanner.readquotedstring;
|
|
stringdispose(outputprefix);
|
|
outputprefix := stringdup(s);
|
|
with current_module do
|
|
setfilename(paramfn^, paramallowoutput);
|
|
end;
|
|
|
|
procedure dir_libsuffix;
|
|
var
|
|
s : string;
|
|
begin
|
|
current_scanner.skipspace;
|
|
if c <> '''' then
|
|
Message2(scan_f_syn_expected, '''', c);
|
|
s := current_scanner.readquotedstring;
|
|
stringdispose(outputsuffix);
|
|
outputsuffix := stringdup(s);
|
|
with current_module do
|
|
setfilename(paramfn^, paramallowoutput);
|
|
end;
|
|
|
|
procedure dir_extension;
|
|
var
|
|
s : string;
|
|
begin
|
|
current_scanner.skipspace;
|
|
if c <> '''' then
|
|
Message2(scan_f_syn_expected, '''', c);
|
|
s := current_scanner.readquotedstring;
|
|
if OutputFileName='' then
|
|
OutputFileName:=InputFileName;
|
|
OutputFileName:=ChangeFileExt(OutputFileName,'.'+s);
|
|
with current_module do
|
|
setfilename(paramfn^, paramallowoutput);
|
|
end;
|
|
|
|
{
|
|
Compile time expression type check
|
|
----------------------------------
|
|
Each subexpression returns its type to the caller, which then can
|
|
do type check. Since data types of compile time expressions is
|
|
not well defined, the type system does a best effort. The drawback is
|
|
that some errors might not be detected.
|
|
|
|
Instead of returning a particular data type, a set of possible data types
|
|
are returned. This way ambigouos types can be handled. For instance a
|
|
value of 1 can be both a boolean and and integer.
|
|
|
|
Booleans
|
|
--------
|
|
|
|
The following forms of boolean values are supported:
|
|
* C coded, that is 0 is false, non-zero is true.
|
|
* TRUE/FALSE for mac style compile time variables
|
|
|
|
Thus boolean mac compile time variables are always stored as TRUE/FALSE.
|
|
When a compile time expression is evaluated, they are then translated
|
|
to C coded booleans (0/1), to simplify for the expression evaluator.
|
|
|
|
Note that this scheme then also of support mac compile time variables which
|
|
are 0/1 but with a boolean meaning.
|
|
|
|
The TRUE/FALSE format is new from 22 august 2005, but the above scheme
|
|
means that units which is not recompiled, and thus stores
|
|
compile time variables as the old format (0/1), continue to work.
|
|
|
|
Short circuit evaluation
|
|
------------------------
|
|
For this to work, the part of a compile time expression which is short
|
|
circuited, should not be evaluated, while it still should be parsed.
|
|
Therefor there is a parameter eval, telling whether evaluation is needed.
|
|
In case not, the value returned can be arbitrary.
|
|
}
|
|
|
|
type
|
|
{Compile time expression types}
|
|
TCTEType = (ctetBoolean, ctetInteger, ctetString, ctetSet);
|
|
TCTETypeSet = set of TCTEType;
|
|
|
|
const
|
|
cteTypeNames : array[TCTEType] of string[10] = (
|
|
'BOOLEAN','INTEGER','STRING','SET');
|
|
|
|
{Subset of types which can be elements in sets.}
|
|
setelementdefs = [ctetBoolean, ctetInteger, ctetString];
|
|
|
|
|
|
function GetCTETypeName(t: TCTETypeSet): String;
|
|
var
|
|
i: TCTEType;
|
|
begin
|
|
result:= '';
|
|
for i:= Low(TCTEType) to High(TCTEType) do
|
|
if i in t then
|
|
if result = '' then
|
|
result:= cteTypeNames[i]
|
|
else
|
|
result:= result + ' or ' + cteTypeNames[i];
|
|
end;
|
|
|
|
procedure CTEError(actType, desiredExprType: TCTETypeSet; place: String);
|
|
|
|
begin
|
|
Message3(scan_e_compile_time_typeerror,
|
|
GetCTETypeName(desiredExprType),
|
|
GetCTETypeName(actType),
|
|
place
|
|
);
|
|
end;
|
|
|
|
function parse_compiler_expr(var compileExprType: TCTETypeSet):string;
|
|
|
|
function read_expr(var exprType: TCTETypeSet; eval : Boolean) : string; forward;
|
|
|
|
procedure preproc_consume(t : ttoken);
|
|
begin
|
|
if t<>current_scanner.preproc_token then
|
|
Message(scan_e_preproc_syntax_error);
|
|
current_scanner.preproc_token:=current_scanner.readpreproc;
|
|
end;
|
|
|
|
function preproc_substitutedtoken(var macroType: TCTETypeSet; eval : Boolean): string;
|
|
{ Currently this parses identifiers as well as numbers.
|
|
The result from this procedure can either be that the token
|
|
itself is a value, or that it is a compile time variable/macro,
|
|
which then is substituted for another value (for macros
|
|
recursivelly substituted).}
|
|
|
|
var
|
|
hs: string;
|
|
mac : tmacro;
|
|
macrocount,
|
|
len : integer;
|
|
numres : longint;
|
|
w: word;
|
|
begin
|
|
result := current_scanner.preproc_pattern;
|
|
if not eval then
|
|
exit;
|
|
|
|
mac:= nil;
|
|
{ Substitue macros and compiler variables with their content/value.
|
|
For real macros also do recursive substitution. }
|
|
macrocount:=0;
|
|
repeat
|
|
mac:=tmacro(search_macro(result));
|
|
|
|
inc(macrocount);
|
|
if macrocount>max_macro_nesting then
|
|
begin
|
|
Message(scan_w_macro_too_deep);
|
|
break;
|
|
end;
|
|
|
|
if assigned(mac) and mac.defined then
|
|
if assigned(mac.buftext) then
|
|
begin
|
|
if mac.buflen>255 then
|
|
begin
|
|
len:=255;
|
|
Message(scan_w_macro_cut_after_255_chars);
|
|
end
|
|
else
|
|
len:=mac.buflen;
|
|
hs[0]:=char(len);
|
|
move(mac.buftext^,hs[1],len);
|
|
result:=upcase(hs);
|
|
mac.is_used:=true;
|
|
end
|
|
else
|
|
begin
|
|
Message1(scan_e_error_macro_lacks_value, result);
|
|
break;
|
|
end
|
|
else
|
|
begin
|
|
break;
|
|
end;
|
|
|
|
if mac.is_compiler_var then
|
|
break;
|
|
until false;
|
|
|
|
{ At this point, result do contain the value. Do some decoding and
|
|
determine the type.}
|
|
val(result,numres,w);
|
|
if (w=0) then {It is an integer}
|
|
begin
|
|
if (numres = 0) or (numres = 1) then
|
|
macroType := [ctetInteger, ctetBoolean]
|
|
else
|
|
macroType := [ctetInteger];
|
|
end
|
|
else if assigned(mac) and (m_mac in current_settings.modeswitches) and (result='FALSE') then
|
|
begin
|
|
result:= '0';
|
|
macroType:= [ctetBoolean];
|
|
end
|
|
else if assigned(mac) and (m_mac in current_settings.modeswitches) and (result='TRUE') then
|
|
begin
|
|
result:= '1';
|
|
macroType:= [ctetBoolean];
|
|
end
|
|
else if (m_mac in current_settings.modeswitches) and
|
|
(not assigned(mac) or not mac.defined) and
|
|
(macrocount = 1) then
|
|
begin
|
|
{Errors in mode mac is issued here. For non macpas modes there is
|
|
more liberty, but the error will eventually be caught at a later stage.}
|
|
Message1(scan_e_error_macro_undefined, result);
|
|
macroType:= [ctetString]; {Just to have something}
|
|
end
|
|
else
|
|
macroType:= [ctetString];
|
|
end;
|
|
|
|
function read_factor(var factorType: TCTETypeSet; eval : Boolean) : string;
|
|
var
|
|
hs : string;
|
|
mac: tmacro;
|
|
srsym : tsym;
|
|
srsymtable : TSymtable;
|
|
hdef : TDef;
|
|
l : longint;
|
|
w : integer;
|
|
hasKlammer: Boolean;
|
|
setElemType : TCTETypeSet;
|
|
|
|
begin
|
|
if current_scanner.preproc_token=_ID then
|
|
begin
|
|
if current_scanner.preproc_pattern='DEFINED' then
|
|
begin
|
|
factorType:= [ctetBoolean];
|
|
preproc_consume(_ID);
|
|
current_scanner.skipspace;
|
|
if current_scanner.preproc_token =_LKLAMMER then
|
|
begin
|
|
preproc_consume(_LKLAMMER);
|
|
current_scanner.skipspace;
|
|
hasKlammer:= true;
|
|
end
|
|
else if (m_mac in current_settings.modeswitches) then
|
|
hasKlammer:= false
|
|
else
|
|
Message(scan_e_error_in_preproc_expr);
|
|
|
|
if current_scanner.preproc_token =_ID then
|
|
begin
|
|
hs := current_scanner.preproc_pattern;
|
|
mac := tmacro(search_macro(hs));
|
|
if assigned(mac) and mac.defined then
|
|
begin
|
|
hs := '1';
|
|
mac.is_used:=true;
|
|
end
|
|
else
|
|
hs := '0';
|
|
read_factor := hs;
|
|
preproc_consume(_ID);
|
|
current_scanner.skipspace;
|
|
end
|
|
else
|
|
Message(scan_e_error_in_preproc_expr);
|
|
|
|
if hasKlammer then
|
|
if current_scanner.preproc_token =_RKLAMMER then
|
|
preproc_consume(_RKLAMMER)
|
|
else
|
|
Message(scan_e_error_in_preproc_expr);
|
|
end
|
|
else
|
|
if (m_mac in current_settings.modeswitches) and (current_scanner.preproc_pattern='UNDEFINED') then
|
|
begin
|
|
factorType:= [ctetBoolean];
|
|
preproc_consume(_ID);
|
|
current_scanner.skipspace;
|
|
if current_scanner.preproc_token =_ID then
|
|
begin
|
|
hs := current_scanner.preproc_pattern;
|
|
mac := tmacro(search_macro(hs));
|
|
if assigned(mac) then
|
|
begin
|
|
hs := '0';
|
|
mac.is_used:=true;
|
|
end
|
|
else
|
|
hs := '1';
|
|
read_factor := hs;
|
|
preproc_consume(_ID);
|
|
current_scanner.skipspace;
|
|
end
|
|
else
|
|
Message(scan_e_error_in_preproc_expr);
|
|
end
|
|
else
|
|
if (m_mac in current_settings.modeswitches) and (current_scanner.preproc_pattern='OPTION') then
|
|
begin
|
|
factorType:= [ctetBoolean];
|
|
preproc_consume(_ID);
|
|
current_scanner.skipspace;
|
|
if current_scanner.preproc_token =_LKLAMMER then
|
|
begin
|
|
preproc_consume(_LKLAMMER);
|
|
current_scanner.skipspace;
|
|
end
|
|
else
|
|
Message(scan_e_error_in_preproc_expr);
|
|
|
|
if not (current_scanner.preproc_token = _ID) then
|
|
Message(scan_e_error_in_preproc_expr);
|
|
|
|
hs:=current_scanner.preproc_pattern;
|
|
if (length(hs) > 1) then
|
|
{This is allowed in Metrowerks Pascal}
|
|
Message(scan_e_error_in_preproc_expr)
|
|
else
|
|
begin
|
|
if CheckSwitch(hs[1],'+') then
|
|
read_factor := '1'
|
|
else
|
|
read_factor := '0';
|
|
end;
|
|
|
|
preproc_consume(_ID);
|
|
current_scanner.skipspace;
|
|
if current_scanner.preproc_token =_RKLAMMER then
|
|
preproc_consume(_RKLAMMER)
|
|
else
|
|
Message(scan_e_error_in_preproc_expr);
|
|
end
|
|
else
|
|
if current_scanner.preproc_pattern='SIZEOF' then
|
|
begin
|
|
factorType:= [ctetInteger];
|
|
preproc_consume(_ID);
|
|
current_scanner.skipspace;
|
|
if current_scanner.preproc_token =_LKLAMMER then
|
|
begin
|
|
preproc_consume(_LKLAMMER);
|
|
current_scanner.skipspace;
|
|
end
|
|
else
|
|
Message(scan_e_preproc_syntax_error);
|
|
|
|
if eval then
|
|
if searchsym(current_scanner.preproc_pattern,srsym,srsymtable) then
|
|
begin
|
|
l:=0;
|
|
case srsym.typ of
|
|
staticvarsym,
|
|
localvarsym,
|
|
paravarsym :
|
|
l:=tabstractvarsym(srsym).getsize;
|
|
typesym:
|
|
l:=ttypesym(srsym).typedef.size;
|
|
else
|
|
Message(scan_e_error_in_preproc_expr);
|
|
end;
|
|
str(l,read_factor);
|
|
end
|
|
else
|
|
Message1(sym_e_id_not_found,current_scanner.preproc_pattern);
|
|
|
|
preproc_consume(_ID);
|
|
current_scanner.skipspace;
|
|
|
|
if current_scanner.preproc_token =_RKLAMMER then
|
|
preproc_consume(_RKLAMMER)
|
|
else
|
|
Message(scan_e_preproc_syntax_error);
|
|
end
|
|
else
|
|
if current_scanner.preproc_pattern='HIGH' then
|
|
begin
|
|
factorType:= [ctetInteger];
|
|
preproc_consume(_ID);
|
|
current_scanner.skipspace;
|
|
if current_scanner.preproc_token =_LKLAMMER then
|
|
begin
|
|
preproc_consume(_LKLAMMER);
|
|
current_scanner.skipspace;
|
|
end
|
|
else
|
|
Message(scan_e_preproc_syntax_error);
|
|
|
|
if eval then
|
|
if searchsym(current_scanner.preproc_pattern,srsym,srsymtable) then
|
|
begin
|
|
hdef:=nil;
|
|
hs:='';
|
|
l:=0;
|
|
case srsym.typ of
|
|
staticvarsym,
|
|
localvarsym,
|
|
paravarsym :
|
|
hdef:=tabstractvarsym(srsym).vardef;
|
|
typesym:
|
|
hdef:=ttypesym(srsym).typedef;
|
|
else
|
|
Message(scan_e_error_in_preproc_expr);
|
|
end;
|
|
if hdef<>nil then
|
|
begin
|
|
if hdef.typ=setdef then
|
|
hdef:=tsetdef(hdef).elementdef;
|
|
case hdef.typ of
|
|
orddef:
|
|
with torddef(hdef).high do
|
|
if signed then
|
|
str(svalue,hs)
|
|
else
|
|
str(uvalue,hs);
|
|
enumdef:
|
|
l:=tenumdef(hdef).maxval;
|
|
arraydef:
|
|
if is_open_array(hdef) or is_array_of_const(hdef) or is_dynamic_array(hdef) then
|
|
Message(type_e_mismatch)
|
|
else
|
|
l:=tarraydef(hdef).highrange;
|
|
stringdef:
|
|
if is_open_string(hdef) or is_ansistring(hdef) or is_wide_or_unicode_string(hdef) then
|
|
Message(type_e_mismatch)
|
|
else
|
|
l:=tstringdef(hdef).len;
|
|
else
|
|
Message(type_e_mismatch);
|
|
end;
|
|
end;
|
|
if hs='' then
|
|
str(l,read_factor)
|
|
else
|
|
read_factor:=hs;
|
|
end
|
|
else
|
|
Message1(sym_e_id_not_found,current_scanner.preproc_pattern);
|
|
|
|
preproc_consume(_ID);
|
|
current_scanner.skipspace;
|
|
|
|
if current_scanner.preproc_token =_RKLAMMER then
|
|
preproc_consume(_RKLAMMER)
|
|
else
|
|
Message(scan_e_preproc_syntax_error);
|
|
end
|
|
else
|
|
if current_scanner.preproc_pattern='DECLARED' then
|
|
begin
|
|
factorType:= [ctetBoolean];
|
|
preproc_consume(_ID);
|
|
current_scanner.skipspace;
|
|
if current_scanner.preproc_token =_LKLAMMER then
|
|
begin
|
|
preproc_consume(_LKLAMMER);
|
|
current_scanner.skipspace;
|
|
end
|
|
else
|
|
Message(scan_e_error_in_preproc_expr);
|
|
if current_scanner.preproc_token =_ID then
|
|
begin
|
|
hs := upper(current_scanner.preproc_pattern);
|
|
if searchsym(hs,srsym,srsymtable) then
|
|
hs := '1'
|
|
else
|
|
hs := '0';
|
|
read_factor := hs;
|
|
preproc_consume(_ID);
|
|
current_scanner.skipspace;
|
|
end
|
|
else
|
|
Message(scan_e_error_in_preproc_expr);
|
|
if current_scanner.preproc_token =_RKLAMMER then
|
|
preproc_consume(_RKLAMMER)
|
|
else
|
|
Message(scan_e_error_in_preproc_expr);
|
|
end
|
|
else
|
|
if current_scanner.preproc_pattern='NOT' then
|
|
begin
|
|
factorType:= [ctetBoolean];
|
|
preproc_consume(_ID);
|
|
hs:=read_factor(factorType, eval);
|
|
if eval then
|
|
begin
|
|
if not (ctetBoolean in factorType) then
|
|
CTEError(factorType, [ctetBoolean], 'NOT');
|
|
val(hs,l,w);
|
|
if l<>0 then
|
|
read_factor:='0'
|
|
else
|
|
read_factor:='1';
|
|
end
|
|
else
|
|
read_factor:='0'; {Just to have something}
|
|
end
|
|
else
|
|
if (m_mac in current_settings.modeswitches) and (current_scanner.preproc_pattern='TRUE') then
|
|
begin
|
|
factorType:= [ctetBoolean];
|
|
preproc_consume(_ID);
|
|
read_factor:='1';
|
|
end
|
|
else
|
|
if (m_mac in current_settings.modeswitches) and (current_scanner.preproc_pattern='FALSE') then
|
|
begin
|
|
factorType:= [ctetBoolean];
|
|
preproc_consume(_ID);
|
|
read_factor:='0';
|
|
end
|
|
else
|
|
begin
|
|
hs:=preproc_substitutedtoken(factorType, eval);
|
|
|
|
{ Default is to return the original symbol }
|
|
read_factor:=hs;
|
|
if eval and ([m_delphi,m_objfpc]*current_settings.modeswitches<>[]) and (ctetString in factorType) then
|
|
if searchsym(current_scanner.preproc_pattern,srsym,srsymtable) then
|
|
begin
|
|
case srsym.typ of
|
|
constsym :
|
|
begin
|
|
with tconstsym(srsym) do
|
|
begin
|
|
case consttyp of
|
|
constord :
|
|
begin
|
|
case constdef.typ of
|
|
orddef:
|
|
begin
|
|
if is_integer(constdef) then
|
|
begin
|
|
read_factor:=tostr(value.valueord);
|
|
factorType:= [ctetInteger];
|
|
end
|
|
else if is_boolean(constdef) then
|
|
begin
|
|
read_factor:=tostr(value.valueord);
|
|
factorType:= [ctetBoolean];
|
|
end
|
|
else if is_char(constdef) then
|
|
begin
|
|
read_factor:=char(qword(value.valueord));
|
|
factorType:= [ctetString];
|
|
end
|
|
end;
|
|
enumdef:
|
|
begin
|
|
read_factor:=tostr(value.valueord);
|
|
factorType:= [ctetInteger];
|
|
end;
|
|
end;
|
|
end;
|
|
conststring :
|
|
begin
|
|
read_factor := upper(pchar(value.valueptr));
|
|
factorType:= [ctetString];
|
|
end;
|
|
constset :
|
|
begin
|
|
hs:=',';
|
|
for l:=0 to 255 do
|
|
if l in pconstset(tconstsym(srsym).value.valueptr)^ then
|
|
hs:=hs+tostr(l)+',';
|
|
read_factor := hs;
|
|
factorType:= [ctetSet];
|
|
end;
|
|
end;
|
|
end;
|
|
end;
|
|
enumsym :
|
|
begin
|
|
read_factor:=tostr(tenumsym(srsym).value);
|
|
factorType:= [ctetInteger];
|
|
end;
|
|
end;
|
|
end;
|
|
preproc_consume(_ID);
|
|
current_scanner.skipspace;
|
|
end
|
|
end
|
|
else if current_scanner.preproc_token =_LKLAMMER then
|
|
begin
|
|
preproc_consume(_LKLAMMER);
|
|
read_factor:=read_expr(factorType, eval);
|
|
preproc_consume(_RKLAMMER);
|
|
end
|
|
else if current_scanner.preproc_token = _LECKKLAMMER then
|
|
begin
|
|
preproc_consume(_LECKKLAMMER);
|
|
read_factor := ',';
|
|
while current_scanner.preproc_token = _ID do
|
|
begin
|
|
read_factor := read_factor+read_factor(setElemType, eval)+',';
|
|
if current_scanner.preproc_token = _COMMA then
|
|
preproc_consume(_COMMA);
|
|
end;
|
|
// TODO Add check of setElemType
|
|
preproc_consume(_RECKKLAMMER);
|
|
factorType:= [ctetSet];
|
|
end
|
|
else
|
|
Message(scan_e_error_in_preproc_expr);
|
|
end;
|
|
|
|
function read_term(var termType: TCTETypeSet; eval : Boolean) : string;
|
|
var
|
|
hs1,hs2 : string;
|
|
l1,l2 : longint;
|
|
w : integer;
|
|
termType2: TCTETypeSet;
|
|
begin
|
|
hs1:=read_factor(termType, eval);
|
|
repeat
|
|
if (current_scanner.preproc_token<>_ID) then
|
|
break;
|
|
if current_scanner.preproc_pattern<>'AND' then
|
|
break;
|
|
|
|
val(hs1,l1,w);
|
|
if l1=0 then
|
|
eval:= false; {Short circuit evaluation of OR}
|
|
|
|
if eval then
|
|
begin
|
|
{Check if first expr is boolean. Must be done here, after we know
|
|
it is an AND expression.}
|
|
if not (ctetBoolean in termType) then
|
|
CTEError(termType, [ctetBoolean], 'AND');
|
|
termType:= [ctetBoolean];
|
|
end;
|
|
|
|
preproc_consume(_ID);
|
|
hs2:=read_factor(termType2, eval);
|
|
|
|
if eval then
|
|
begin
|
|
if not (ctetBoolean in termType2) then
|
|
CTEError(termType2, [ctetBoolean], 'AND');
|
|
|
|
val(hs2,l2,w);
|
|
if (l1<>0) and (l2<>0) then
|
|
hs1:='1'
|
|
else
|
|
hs1:='0';
|
|
end;
|
|
until false;
|
|
read_term:=hs1;
|
|
end;
|
|
|
|
|
|
function read_simple_expr(var simpleExprType: TCTETypeSet; eval : Boolean) : string;
|
|
var
|
|
hs1,hs2 : string;
|
|
l1,l2 : longint;
|
|
w : integer;
|
|
simpleExprType2: TCTETypeSet;
|
|
begin
|
|
hs1:=read_term(simpleExprType, eval);
|
|
repeat
|
|
if (current_scanner.preproc_token<>_ID) then
|
|
break;
|
|
if current_scanner.preproc_pattern<>'OR' then
|
|
break;
|
|
|
|
val(hs1,l1,w);
|
|
if l1<>0 then
|
|
eval:= false; {Short circuit evaluation of OR}
|
|
|
|
if eval then
|
|
begin
|
|
{Check if first expr is boolean. Must be done here, after we know
|
|
it is an OR expression.}
|
|
if not (ctetBoolean in simpleExprType) then
|
|
CTEError(simpleExprType, [ctetBoolean], 'OR');
|
|
simpleExprType:= [ctetBoolean];
|
|
end;
|
|
|
|
preproc_consume(_ID);
|
|
hs2:=read_term(simpleExprType2, eval);
|
|
|
|
if eval then
|
|
begin
|
|
if not (ctetBoolean in simpleExprType2) then
|
|
CTEError(simpleExprType2, [ctetBoolean], 'OR');
|
|
|
|
val(hs2,l2,w);
|
|
if (l1<>0) or (l2<>0) then
|
|
hs1:='1'
|
|
else
|
|
hs1:='0';
|
|
end;
|
|
until false;
|
|
read_simple_expr:=hs1;
|
|
end;
|
|
|
|
function read_expr(var exprType: TCTETypeSet; eval : Boolean) : string;
|
|
var
|
|
hs1,hs2 : string;
|
|
b : boolean;
|
|
op : ttoken;
|
|
w : integer;
|
|
l1,l2 : longint;
|
|
exprType2: TCTETypeSet;
|
|
begin
|
|
hs1:=read_simple_expr(exprType, eval);
|
|
op:=current_scanner.preproc_token;
|
|
if (op = _ID) and (current_scanner.preproc_pattern = 'IN') then
|
|
op := _IN;
|
|
if not (op in [_IN,_EQUAL,_UNEQUAL,_LT,_GT,_LTE,_GTE]) then
|
|
begin
|
|
read_expr:=hs1;
|
|
exit;
|
|
end;
|
|
|
|
if (op = _IN) then
|
|
preproc_consume(_ID)
|
|
else
|
|
preproc_consume(op);
|
|
hs2:=read_simple_expr(exprType2, eval);
|
|
|
|
if eval then
|
|
begin
|
|
if op = _IN then
|
|
begin
|
|
if exprType2 <> [ctetSet] then
|
|
CTEError(exprType2, [ctetSet], 'IN');
|
|
if exprType = [ctetSet] then
|
|
CTEError(exprType, setelementdefs, 'IN');
|
|
|
|
if is_number(hs1) and is_number(hs2) then
|
|
Message(scan_e_preproc_syntax_error)
|
|
else if hs2[1] = ',' then
|
|
b:=pos(','+hs1+',', hs2) > 0 { TODO For integer sets, perhaps check for numeric equivalence so that 0 = 00 }
|
|
else
|
|
Message(scan_e_preproc_syntax_error);
|
|
end
|
|
else
|
|
begin
|
|
if (exprType * exprType2) = [] then
|
|
CTEError(exprType2, exprType, '"'+hs1+' '+tokeninfo^[op].str+' '+hs2+'"');
|
|
|
|
if is_number(hs1) and is_number(hs2) then
|
|
begin
|
|
val(hs1,l1,w);
|
|
val(hs2,l2,w);
|
|
case op of
|
|
_EQUAL :
|
|
b:=l1=l2;
|
|
_UNEQUAL :
|
|
b:=l1<>l2;
|
|
_LT :
|
|
b:=l1<l2;
|
|
_GT :
|
|
b:=l1>l2;
|
|
_GTE :
|
|
b:=l1>=l2;
|
|
_LTE :
|
|
b:=l1<=l2;
|
|
end;
|
|
end
|
|
else
|
|
begin
|
|
case op of
|
|
_EQUAL :
|
|
b:=hs1=hs2;
|
|
_UNEQUAL :
|
|
b:=hs1<>hs2;
|
|
_LT :
|
|
b:=hs1<hs2;
|
|
_GT :
|
|
b:=hs1>hs2;
|
|
_GTE :
|
|
b:=hs1>=hs2;
|
|
_LTE :
|
|
b:=hs1<=hs2;
|
|
end;
|
|
end;
|
|
end;
|
|
end
|
|
else
|
|
b:= false; {Just to have something}
|
|
|
|
if b then
|
|
read_expr:='1'
|
|
else
|
|
read_expr:='0';
|
|
exprType:= [ctetBoolean];
|
|
end;
|
|
|
|
begin
|
|
current_scanner.skipspace;
|
|
{ start preproc expression scanner }
|
|
current_scanner.preproc_token:=current_scanner.readpreproc;
|
|
parse_compiler_expr:=read_expr(compileExprType, true);
|
|
end;
|
|
|
|
function boolean_compile_time_expr(var valuedescr: String): Boolean;
|
|
var
|
|
hs : string;
|
|
exprType: TCTETypeSet;
|
|
begin
|
|
hs:=parse_compiler_expr(exprType);
|
|
if (exprType * [ctetBoolean]) = [] then
|
|
CTEError(exprType, [ctetBoolean], 'IF or ELSEIF');
|
|
boolean_compile_time_expr:= hs <> '0';
|
|
valuedescr:= hs;
|
|
end;
|
|
|
|
procedure dir_if;
|
|
begin
|
|
current_scanner.ifpreprocstack(pp_if,@boolean_compile_time_expr, scan_c_if_found);
|
|
end;
|
|
|
|
procedure dir_elseif;
|
|
begin
|
|
current_scanner.elseifpreprocstack(@boolean_compile_time_expr);
|
|
end;
|
|
|
|
procedure dir_define_impl(macstyle: boolean);
|
|
var
|
|
hs : string;
|
|
bracketcount : longint;
|
|
mac : tmacro;
|
|
macropos : longint;
|
|
macrobuffer : pmacrobuffer;
|
|
begin
|
|
current_scanner.skipspace;
|
|
hs:=current_scanner.readid;
|
|
mac:=tmacro(search_macro(hs));
|
|
if not assigned(mac) or (mac.owner <> current_module.localmacrosymtable) then
|
|
begin
|
|
mac:=tmacro.create(hs);
|
|
mac.defined:=true;
|
|
current_module.localmacrosymtable.insert(mac);
|
|
end
|
|
else
|
|
begin
|
|
mac.defined:=true;
|
|
mac.is_compiler_var:=false;
|
|
{ delete old definition }
|
|
if assigned(mac.buftext) then
|
|
begin
|
|
freemem(mac.buftext,mac.buflen);
|
|
mac.buftext:=nil;
|
|
end;
|
|
end;
|
|
Message1(parser_c_macro_defined,mac.name);
|
|
mac.is_used:=true;
|
|
if (cs_support_macro in current_settings.moduleswitches) then
|
|
begin
|
|
current_scanner.skipspace;
|
|
|
|
if not macstyle then
|
|
begin
|
|
{ may be a macro? }
|
|
if c <> ':' then
|
|
exit;
|
|
current_scanner.readchar;
|
|
if c <> '=' then
|
|
exit;
|
|
current_scanner.readchar;
|
|
current_scanner.skipspace;
|
|
end;
|
|
|
|
{ key words are never substituted }
|
|
if is_keyword(hs) then
|
|
Message(scan_e_keyword_cant_be_a_macro);
|
|
|
|
new(macrobuffer);
|
|
macropos:=0;
|
|
{ parse macro, brackets are counted so it's possible
|
|
to have a $ifdef etc. in the macro }
|
|
bracketcount:=0;
|
|
repeat
|
|
case c of
|
|
'}' :
|
|
if (bracketcount=0) then
|
|
break
|
|
else
|
|
dec(bracketcount);
|
|
'{' :
|
|
inc(bracketcount);
|
|
#10,#13 :
|
|
current_scanner.linebreak;
|
|
#26 :
|
|
current_scanner.end_of_file;
|
|
end;
|
|
macrobuffer^[macropos]:=c;
|
|
inc(macropos);
|
|
if macropos>=maxmacrolen then
|
|
Message(scan_f_macro_buffer_overflow);
|
|
current_scanner.readchar;
|
|
until false;
|
|
|
|
{ free buffer of macro ?}
|
|
if assigned(mac.buftext) then
|
|
freemem(mac.buftext,mac.buflen);
|
|
{ get new mem }
|
|
getmem(mac.buftext,macropos);
|
|
mac.buflen:=macropos;
|
|
{ copy the text }
|
|
move(macrobuffer^,mac.buftext^,macropos);
|
|
dispose(macrobuffer);
|
|
end
|
|
else
|
|
begin
|
|
{ check if there is an assignment, then we need to give a
|
|
warning }
|
|
current_scanner.skipspace;
|
|
if c=':' then
|
|
begin
|
|
current_scanner.readchar;
|
|
if c='=' then
|
|
Message(scan_w_macro_support_turned_off);
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
procedure dir_define;
|
|
begin
|
|
dir_define_impl(false);
|
|
end;
|
|
|
|
procedure dir_definec;
|
|
begin
|
|
dir_define_impl(true);
|
|
end;
|
|
|
|
procedure dir_setc;
|
|
var
|
|
hs : string;
|
|
mac : tmacro;
|
|
exprType: TCTETypeSet;
|
|
l : longint;
|
|
w : integer;
|
|
begin
|
|
current_scanner.skipspace;
|
|
hs:=current_scanner.readid;
|
|
mac:=tmacro(search_macro(hs));
|
|
if not assigned(mac) or
|
|
(mac.owner <> current_module.localmacrosymtable) then
|
|
begin
|
|
mac:=tmacro.create(hs);
|
|
mac.defined:=true;
|
|
mac.is_compiler_var:=true;
|
|
current_module.localmacrosymtable.insert(mac);
|
|
end
|
|
else
|
|
begin
|
|
mac.defined:=true;
|
|
mac.is_compiler_var:=true;
|
|
{ delete old definition }
|
|
if assigned(mac.buftext) then
|
|
begin
|
|
freemem(mac.buftext,mac.buflen);
|
|
mac.buftext:=nil;
|
|
end;
|
|
end;
|
|
Message1(parser_c_macro_defined,mac.name);
|
|
mac.is_used:=true;
|
|
|
|
{ key words are never substituted }
|
|
if is_keyword(hs) then
|
|
Message(scan_e_keyword_cant_be_a_macro);
|
|
|
|
{ macro assignment can be both := and = }
|
|
current_scanner.skipspace;
|
|
if c=':' then
|
|
current_scanner.readchar;
|
|
if c='=' then
|
|
begin
|
|
current_scanner.readchar;
|
|
hs:= parse_compiler_expr(exprType);
|
|
if (exprType * [ctetBoolean, ctetInteger]) = [] then
|
|
CTEError(exprType, [ctetBoolean, ctetInteger], 'SETC');
|
|
|
|
if length(hs) <> 0 then
|
|
begin
|
|
{If we are absolutely shure it is boolean, translate
|
|
to TRUE/FALSE to increase possibility to do future type check}
|
|
if exprType = [ctetBoolean] then
|
|
begin
|
|
val(hs,l,w);
|
|
if l<>0 then
|
|
hs:='TRUE'
|
|
else
|
|
hs:='FALSE';
|
|
end;
|
|
Message2(parser_c_macro_set_to,mac.name,hs);
|
|
{ free buffer of macro ?}
|
|
if assigned(mac.buftext) then
|
|
freemem(mac.buftext,mac.buflen);
|
|
{ get new mem }
|
|
getmem(mac.buftext,length(hs));
|
|
mac.buflen:=length(hs);
|
|
{ copy the text }
|
|
move(hs[1],mac.buftext^,mac.buflen);
|
|
end
|
|
else
|
|
Message(scan_e_preproc_syntax_error);
|
|
end
|
|
else
|
|
Message(scan_e_preproc_syntax_error);
|
|
end;
|
|
|
|
|
|
procedure dir_undef;
|
|
var
|
|
hs : string;
|
|
mac : tmacro;
|
|
begin
|
|
current_scanner.skipspace;
|
|
hs:=current_scanner.readid;
|
|
mac:=tmacro(search_macro(hs));
|
|
if not assigned(mac) or
|
|
(mac.owner <> current_module.localmacrosymtable) then
|
|
begin
|
|
mac:=tmacro.create(hs);
|
|
mac.defined:=false;
|
|
current_module.localmacrosymtable.insert(mac);
|
|
end
|
|
else
|
|
begin
|
|
mac.defined:=false;
|
|
mac.is_compiler_var:=false;
|
|
{ delete old definition }
|
|
if assigned(mac.buftext) then
|
|
begin
|
|
freemem(mac.buftext,mac.buflen);
|
|
mac.buftext:=nil;
|
|
end;
|
|
end;
|
|
Message1(parser_c_macro_undefined,mac.name);
|
|
mac.is_used:=true;
|
|
end;
|
|
|
|
procedure dir_include;
|
|
|
|
function findincludefile(const path,name:TCmdStr;var foundfile:TCmdStr):boolean;
|
|
var
|
|
found : boolean;
|
|
hpath : TCmdStr;
|
|
begin
|
|
(* look for the include file
|
|
If path was absolute and specified as part of {$I } then
|
|
1. specified path
|
|
else
|
|
1. path of current inputfile,current dir
|
|
2. local includepath
|
|
3. global includepath
|
|
|
|
-- Check mantis #13461 before changing this *)
|
|
found:=false;
|
|
foundfile:='';
|
|
hpath:='';
|
|
if path_absolute(path) then
|
|
begin
|
|
found:=FindFile(name,path,true,foundfile);
|
|
end
|
|
else
|
|
begin
|
|
hpath:=current_scanner.inputfile.path^+';'+CurDirRelPath(source_info);
|
|
found:=FindFile(path+name, hpath,true,foundfile);
|
|
if not found then
|
|
found:=current_module.localincludesearchpath.FindFile(path+name,true,foundfile);
|
|
if not found then
|
|
found:=includesearchpath.FindFile(path+name,true,foundfile);
|
|
end;
|
|
result:=found;
|
|
end;
|
|
|
|
var
|
|
foundfile : TCmdStr;
|
|
path,
|
|
name,
|
|
args,
|
|
hs : tpathstr;
|
|
hp : tinputfile;
|
|
found : boolean;
|
|
begin
|
|
current_scanner.skipspace;
|
|
args:=current_scanner.readcomment;
|
|
hs:=GetToken(args,' ');
|
|
if hs='' then
|
|
exit;
|
|
if (hs[1]='%') then
|
|
begin
|
|
{ case insensitive }
|
|
hs:=upper(hs);
|
|
{ remove %'s }
|
|
Delete(hs,1,1);
|
|
if hs[length(hs)]='%' then
|
|
Delete(hs,length(hs),1);
|
|
{ save old }
|
|
path:=hs;
|
|
{ first check for internal macros }
|
|
if hs='TIME' then
|
|
hs:=gettimestr
|
|
else
|
|
if hs='DATE' then
|
|
hs:=getdatestr
|
|
else
|
|
if hs='FILE' then
|
|
hs:=current_module.sourcefiles.get_file_name(current_filepos.fileindex)
|
|
else
|
|
if hs='LINE' then
|
|
hs:=tostr(current_filepos.line)
|
|
else
|
|
if hs='FPCVERSION' then
|
|
hs:=version_string
|
|
else
|
|
if hs='FPCDATE' then
|
|
hs:=date_string
|
|
else
|
|
if hs='FPCTARGET' then
|
|
hs:=target_cpu_string
|
|
else
|
|
if hs='FPCTARGETCPU' then
|
|
hs:=target_cpu_string
|
|
else
|
|
if hs='FPCTARGETOS' then
|
|
hs:=target_info.shortname
|
|
else
|
|
hs:=GetEnvironmentVariable(hs);
|
|
if hs='' then
|
|
Message1(scan_w_include_env_not_found,path);
|
|
{ make it a stringconst }
|
|
hs:=''''+hs+'''';
|
|
current_scanner.insertmacro(path,@hs[1],length(hs),
|
|
current_scanner.line_no,current_scanner.inputfile.ref_index);
|
|
end
|
|
else
|
|
begin
|
|
hs:=FixFileName(hs);
|
|
path:=ExtractFilePath(hs);
|
|
name:=ExtractFileName(hs);
|
|
{ Special case for Delphi compatibility: '*' has to be replaced
|
|
by the file name of the current source file. }
|
|
if (length(name)>=1) and
|
|
(name[1]='*') then
|
|
name:=ChangeFileExt(current_module.sourcefiles.get_file_name(current_filepos.fileindex),'')+ExtractFileExt(name);
|
|
|
|
{ try to find the file }
|
|
found:=findincludefile(path,name,foundfile);
|
|
if (ExtractFileExt(name)='') then
|
|
begin
|
|
{ try default extensions .inc , .pp and .pas }
|
|
if (not found) then
|
|
found:=findincludefile(path,ChangeFileExt(name,'.inc'),foundfile);
|
|
if (not found) then
|
|
found:=findincludefile(path,ChangeFileExt(name,sourceext),foundfile);
|
|
if (not found) then
|
|
found:=findincludefile(path,ChangeFileExt(name,pasext),foundfile);
|
|
end;
|
|
if current_scanner.inputfilecount<max_include_nesting then
|
|
begin
|
|
inc(current_scanner.inputfilecount);
|
|
{ we need to reread the current char }
|
|
dec(current_scanner.inputpointer);
|
|
{ shutdown current file }
|
|
current_scanner.tempcloseinputfile;
|
|
{ load new file }
|
|
hp:=do_openinputfile(foundfile);
|
|
current_scanner.addfile(hp);
|
|
current_module.sourcefiles.register_file(hp);
|
|
if (not found) then
|
|
Message1(scan_f_cannot_open_includefile,hs);
|
|
if (not current_scanner.openinputfile) then
|
|
Message1(scan_f_cannot_open_includefile,hs);
|
|
Message1(scan_t_start_include_file,current_scanner.inputfile.path^+current_scanner.inputfile.name^);
|
|
current_scanner.reload;
|
|
end
|
|
else
|
|
Message(scan_f_include_deep_ten);
|
|
end;
|
|
end;
|
|
|
|
|
|
{*****************************************************************************
|
|
Preprocessor writing
|
|
*****************************************************************************}
|
|
|
|
{$ifdef PREPROCWRITE}
|
|
constructor tpreprocfile.create(const fn:string);
|
|
begin
|
|
{ open outputfile }
|
|
assign(f,fn);
|
|
{$I-}
|
|
rewrite(f);
|
|
{$I+}
|
|
if ioresult<>0 then
|
|
Comment(V_Fatal,'can''t create file '+fn);
|
|
getmem(buf,preprocbufsize);
|
|
settextbuf(f,buf^,preprocbufsize);
|
|
{ reset }
|
|
eolfound:=false;
|
|
spacefound:=false;
|
|
end;
|
|
|
|
|
|
destructor tpreprocfile.destroy;
|
|
begin
|
|
close(f);
|
|
freemem(buf,preprocbufsize);
|
|
end;
|
|
|
|
|
|
procedure tpreprocfile.add(const s:string);
|
|
begin
|
|
write(f,s);
|
|
end;
|
|
|
|
procedure tpreprocfile.addspace;
|
|
begin
|
|
if eolfound then
|
|
begin
|
|
writeln(f,'');
|
|
eolfound:=false;
|
|
spacefound:=false;
|
|
end
|
|
else
|
|
if spacefound then
|
|
begin
|
|
write(f,' ');
|
|
spacefound:=false;
|
|
end;
|
|
end;
|
|
{$endif PREPROCWRITE}
|
|
|
|
|
|
{*****************************************************************************
|
|
TPreProcStack
|
|
*****************************************************************************}
|
|
|
|
constructor tpreprocstack.create(atyp : preproctyp;a:boolean;n:tpreprocstack);
|
|
begin
|
|
accept:=a;
|
|
typ:=atyp;
|
|
next:=n;
|
|
end;
|
|
|
|
{*****************************************************************************
|
|
TReplayStack
|
|
*****************************************************************************}
|
|
constructor treplaystack.Create(atoken:ttoken;asettings:tsettings;atokenbuf:tdynamicarray;anext:treplaystack);
|
|
begin
|
|
token:=atoken;
|
|
settings:=asettings;
|
|
tokenbuf:=atokenbuf;
|
|
next:=anext;
|
|
end;
|
|
|
|
{*****************************************************************************
|
|
TDirectiveItem
|
|
*****************************************************************************}
|
|
|
|
constructor TDirectiveItem.Create(AList:TFPHashObjectList;const n:string;p:tdirectiveproc);
|
|
begin
|
|
inherited Create(AList,n);
|
|
is_conditional:=false;
|
|
proc:=p;
|
|
end;
|
|
|
|
|
|
constructor TDirectiveItem.CreateCond(AList:TFPHashObjectList;const n:string;p:tdirectiveproc);
|
|
begin
|
|
inherited Create(AList,n);
|
|
is_conditional:=true;
|
|
proc:=p;
|
|
end;
|
|
|
|
{****************************************************************************
|
|
TSCANNERFILE
|
|
****************************************************************************}
|
|
|
|
constructor tscannerfile.create(const fn:string);
|
|
begin
|
|
inputfile:=do_openinputfile(fn);
|
|
if assigned(current_module) then
|
|
current_module.sourcefiles.register_file(inputfile);
|
|
{ reset localinput }
|
|
inputbuffer:=nil;
|
|
inputpointer:=nil;
|
|
inputstart:=0;
|
|
{ reset scanner }
|
|
preprocstack:=nil;
|
|
replaystack:=nil;
|
|
comment_level:=0;
|
|
yylexcount:=0;
|
|
block_type:=bt_general;
|
|
line_no:=0;
|
|
lastlinepos:=0;
|
|
lasttokenpos:=0;
|
|
nexttokenpos:=0;
|
|
lasttoken:=NOTOKEN;
|
|
nexttoken:=NOTOKEN;
|
|
lastasmgetchar:=#0;
|
|
ignoredirectives:=TFPHashList.Create;
|
|
in_asm_string:=false;
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.firstfile;
|
|
begin
|
|
{ load block }
|
|
if not openinputfile then
|
|
Message1(scan_f_cannot_open_input,inputfile.name^);
|
|
reload;
|
|
end;
|
|
|
|
|
|
destructor tscannerfile.destroy;
|
|
begin
|
|
if assigned(current_module) and
|
|
(current_module.state=ms_compiled) and
|
|
(status.errorcount=0) then
|
|
checkpreprocstack
|
|
else
|
|
begin
|
|
while assigned(preprocstack) do
|
|
poppreprocstack;
|
|
end;
|
|
while assigned(replaystack) do
|
|
popreplaystack;
|
|
if not inputfile.closed then
|
|
closeinputfile;
|
|
ignoredirectives.free;
|
|
end;
|
|
|
|
|
|
function tscannerfile.openinputfile:boolean;
|
|
begin
|
|
openinputfile:=inputfile.open;
|
|
{ load buffer }
|
|
inputbuffer:=inputfile.buf;
|
|
inputpointer:=inputfile.buf;
|
|
inputstart:=inputfile.bufstart;
|
|
{ line }
|
|
line_no:=0;
|
|
lastlinepos:=0;
|
|
lasttokenpos:=0;
|
|
nexttokenpos:=0;
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.closeinputfile;
|
|
begin
|
|
inputfile.close;
|
|
{ reset buffer }
|
|
inputbuffer:=nil;
|
|
inputpointer:=nil;
|
|
inputstart:=0;
|
|
{ reset line }
|
|
line_no:=0;
|
|
lastlinepos:=0;
|
|
lasttokenpos:=0;
|
|
nexttokenpos:=0;
|
|
end;
|
|
|
|
|
|
function tscannerfile.tempopeninputfile:boolean;
|
|
begin
|
|
if inputfile.is_macro then
|
|
exit;
|
|
tempopeninputfile:=inputfile.tempopen;
|
|
{ reload buffer }
|
|
inputbuffer:=inputfile.buf;
|
|
inputpointer:=inputfile.buf;
|
|
inputstart:=inputfile.bufstart;
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.tempcloseinputfile;
|
|
begin
|
|
if inputfile.closed or inputfile.is_macro then
|
|
exit;
|
|
inputfile.setpos(inputstart+(inputpointer-inputbuffer));
|
|
inputfile.tempclose;
|
|
{ reset buffer }
|
|
inputbuffer:=nil;
|
|
inputpointer:=nil;
|
|
inputstart:=0;
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.saveinputfile;
|
|
begin
|
|
inputfile.saveinputpointer:=inputpointer;
|
|
inputfile.savelastlinepos:=lastlinepos;
|
|
inputfile.saveline_no:=line_no;
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.restoreinputfile;
|
|
begin
|
|
inputbuffer:=inputfile.buf;
|
|
inputpointer:=inputfile.saveinputpointer;
|
|
lastlinepos:=inputfile.savelastlinepos;
|
|
line_no:=inputfile.saveline_no;
|
|
if not inputfile.is_macro then
|
|
parser_current_file:=inputfile.name^;
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.nextfile;
|
|
var
|
|
to_dispose : tinputfile;
|
|
begin
|
|
if assigned(inputfile.next) then
|
|
begin
|
|
if inputfile.is_macro then
|
|
to_dispose:=inputfile
|
|
else
|
|
begin
|
|
to_dispose:=nil;
|
|
dec(inputfilecount);
|
|
end;
|
|
{ we can allways close the file, no ? }
|
|
inputfile.close;
|
|
inputfile:=inputfile.next;
|
|
if assigned(to_dispose) then
|
|
to_dispose.free;
|
|
restoreinputfile;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.startrecordtokens(buf:tdynamicarray);
|
|
begin
|
|
if not assigned(buf) then
|
|
internalerror(200511172);
|
|
if assigned(recordtokenbuf) then
|
|
internalerror(200511173);
|
|
recordtokenbuf:=buf;
|
|
fillchar(last_settings,sizeof(last_settings),0);
|
|
fillchar(last_filepos,sizeof(last_filepos),0);
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.stoprecordtokens;
|
|
begin
|
|
if not assigned(recordtokenbuf) then
|
|
internalerror(200511174);
|
|
recordtokenbuf:=nil;
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.recordtoken;
|
|
var
|
|
a : array[0..1] of byte;
|
|
len : sizeint;
|
|
begin
|
|
if not assigned(recordtokenbuf) then
|
|
internalerror(200511176);
|
|
{ settings changed? }
|
|
if CompareByte(current_settings,last_settings,sizeof(current_settings))<>0 then
|
|
begin
|
|
{ use a special token to record it }
|
|
a[0]:=byte(_GENERICSPECIALTOKEN);
|
|
a[1]:=byte(ST_LOADSETTINGS);
|
|
recordtokenbuf.write(a,2);
|
|
recordtokenbuf.write(current_settings,sizeof(current_settings));
|
|
last_settings:=current_settings;
|
|
end;
|
|
|
|
{ file pos changes? }
|
|
if current_tokenpos.line<>last_filepos.line then
|
|
begin
|
|
a[0]:=byte(_GENERICSPECIALTOKEN);
|
|
a[1]:=byte(ST_LINE);
|
|
recordtokenbuf.write(a,2);
|
|
recordtokenbuf.write(current_tokenpos.line,sizeof(current_tokenpos.line));
|
|
last_filepos.line:=current_tokenpos.line;
|
|
end;
|
|
if current_tokenpos.column<>last_filepos.column then
|
|
begin
|
|
a[0]:=byte(_GENERICSPECIALTOKEN);
|
|
a[1]:=byte(ST_COLUMN);
|
|
recordtokenbuf.write(a,2);
|
|
recordtokenbuf.write(current_tokenpos.column,sizeof(current_tokenpos.column));
|
|
last_filepos.column:=current_tokenpos.column;
|
|
end;
|
|
if current_tokenpos.fileindex<>last_filepos.fileindex then
|
|
begin
|
|
a[0]:=byte(_GENERICSPECIALTOKEN);
|
|
a[1]:=byte(ST_FILEINDEX);
|
|
recordtokenbuf.write(a,2);
|
|
recordtokenbuf.write(current_tokenpos.fileindex,sizeof(current_tokenpos.fileindex));
|
|
last_filepos.fileindex:=current_tokenpos.fileindex;
|
|
end;
|
|
|
|
recordtokenbuf.write(token,1);
|
|
if token=_ID then
|
|
recordtokenbuf.write(idtoken,1);
|
|
case token of
|
|
_CWCHAR,
|
|
_CWSTRING :
|
|
begin
|
|
recordtokenbuf.write(patternw^.len,sizeof(sizeint));
|
|
recordtokenbuf.write(patternw^.data^,patternw^.len*sizeof(tcompilerwidechar));
|
|
end;
|
|
_CSTRING:
|
|
begin
|
|
len:=length(cstringpattern);
|
|
recordtokenbuf.write(len,sizeof(sizeint));
|
|
recordtokenbuf.write(cstringpattern[1],length(cstringpattern));
|
|
end;
|
|
_CCHAR,
|
|
_INTCONST,
|
|
_REALNUMBER :
|
|
begin
|
|
{ pexpr.pas messes with pattern in case of negative integer consts,
|
|
see around line 2562 the comment of JM; remove the - before recording it
|
|
(FK)
|
|
}
|
|
if (token=_INTCONST) and (pattern[1]='-') then
|
|
delete(pattern,1,1);
|
|
recordtokenbuf.write(pattern[0],1);
|
|
recordtokenbuf.write(pattern[1],length(pattern));
|
|
end;
|
|
_ID :
|
|
begin
|
|
recordtokenbuf.write(orgpattern[0],1);
|
|
recordtokenbuf.write(orgpattern[1],length(orgpattern));
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.startreplaytokens(buf:tdynamicarray);
|
|
begin
|
|
if not assigned(buf) then
|
|
internalerror(200511175);
|
|
{ save current token }
|
|
if token in [_CWCHAR,_CWSTRING,_CCHAR,_CSTRING,_INTCONST,_REALNUMBER,_ID] then
|
|
internalerror(200511178);
|
|
replaystack:=treplaystack.create(token,current_settings,replaytokenbuf,replaystack);
|
|
if assigned(inputpointer) then
|
|
dec(inputpointer);
|
|
{ install buffer }
|
|
replaytokenbuf:=buf;
|
|
|
|
{ reload next token }
|
|
replaytokenbuf.seek(0);
|
|
replaytoken;
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.replaytoken;
|
|
var
|
|
wlen : sizeint;
|
|
specialtoken : tspecialgenerictoken;
|
|
begin
|
|
if not assigned(replaytokenbuf) then
|
|
internalerror(200511177);
|
|
{ End of replay buffer? Then load the next char from the file again }
|
|
if replaytokenbuf.pos>=replaytokenbuf.size then
|
|
begin
|
|
token:=replaystack.token;
|
|
replaytokenbuf:=replaystack.tokenbuf;
|
|
{ restore compiler settings }
|
|
current_settings:=replaystack.settings;
|
|
popreplaystack;
|
|
if assigned(inputpointer) then
|
|
begin
|
|
c:=inputpointer^;
|
|
inc(inputpointer);
|
|
end;
|
|
exit;
|
|
end;
|
|
repeat
|
|
{ load token from the buffer }
|
|
replaytokenbuf.read(token,1);
|
|
if token=_ID then
|
|
replaytokenbuf.read(idtoken,1)
|
|
else
|
|
idtoken:=_NOID;
|
|
case token of
|
|
_CWCHAR,
|
|
_CWSTRING :
|
|
begin
|
|
replaytokenbuf.read(wlen,sizeof(SizeInt));
|
|
setlengthwidestring(patternw,wlen);
|
|
replaytokenbuf.read(patternw^.data^,patternw^.len*sizeof(tcompilerwidechar));
|
|
orgpattern:='';
|
|
pattern:='';
|
|
cstringpattern:='';
|
|
end;
|
|
_CSTRING:
|
|
begin
|
|
replaytokenbuf.read(wlen,sizeof(sizeint));
|
|
setlength(cstringpattern,wlen);
|
|
replaytokenbuf.read(cstringpattern[1],wlen);
|
|
orgpattern:='';
|
|
pattern:='';
|
|
end;
|
|
_CCHAR,
|
|
_INTCONST,
|
|
_REALNUMBER :
|
|
begin
|
|
replaytokenbuf.read(pattern[0],1);
|
|
replaytokenbuf.read(pattern[1],length(pattern));
|
|
orgpattern:='';
|
|
end;
|
|
_ID :
|
|
begin
|
|
replaytokenbuf.read(orgpattern[0],1);
|
|
replaytokenbuf.read(orgpattern[1],length(orgpattern));
|
|
pattern:=upper(orgpattern);
|
|
end;
|
|
_GENERICSPECIALTOKEN:
|
|
begin
|
|
replaytokenbuf.read(specialtoken,1);
|
|
case specialtoken of
|
|
ST_LOADSETTINGS:
|
|
replaytokenbuf.read(current_settings,sizeof(current_settings));
|
|
ST_LINE:
|
|
begin
|
|
replaytokenbuf.read(current_tokenpos.line,sizeof(current_tokenpos.line));
|
|
|
|
{ don't generate invalid line info if no sources are available for the current module }
|
|
if not(get_module(current_filepos.moduleindex).sources_avail) then
|
|
current_tokenpos.line:=0;
|
|
|
|
current_filepos:=current_tokenpos;
|
|
end;
|
|
ST_COLUMN:
|
|
begin
|
|
replaytokenbuf.read(current_tokenpos.column,sizeof(current_tokenpos.column));
|
|
|
|
{ don't generate invalid line info if no sources are available for the current module }
|
|
if not(get_module(current_filepos.moduleindex).sources_avail) then
|
|
current_tokenpos.column:=0;
|
|
|
|
current_filepos:=current_tokenpos;
|
|
end;
|
|
ST_FILEINDEX:
|
|
begin
|
|
replaytokenbuf.read(current_tokenpos.fileindex,sizeof(current_tokenpos.fileindex));
|
|
|
|
{ don't generate invalid line info if no sources are available for the current module }
|
|
if not(get_module(current_filepos.moduleindex).sources_avail) then
|
|
begin
|
|
current_tokenpos.column:=0;
|
|
current_tokenpos.line:=0;
|
|
end;
|
|
|
|
current_filepos:=current_tokenpos;
|
|
end;
|
|
else
|
|
internalerror(2006103010);
|
|
end;
|
|
continue;
|
|
end;
|
|
end;
|
|
break;
|
|
until false;
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.addfile(hp:tinputfile);
|
|
begin
|
|
saveinputfile;
|
|
{ add to list }
|
|
hp.next:=inputfile;
|
|
inputfile:=hp;
|
|
{ load new inputfile }
|
|
restoreinputfile;
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.reload;
|
|
begin
|
|
with inputfile do
|
|
begin
|
|
{ when nothing more to read then leave immediatly, so we
|
|
don't change the current_filepos and leave it point to the last
|
|
char }
|
|
if (c=#26) and (not assigned(next)) then
|
|
exit;
|
|
repeat
|
|
{ still more to read?, then change the #0 to a space so its seen
|
|
as a seperator, this can't be used for macro's which can change
|
|
the place of the #0 in the buffer with tempopen }
|
|
if (c=#0) and (bufsize>0) and
|
|
not(inputfile.is_macro) and
|
|
(inputpointer-inputbuffer<bufsize) then
|
|
begin
|
|
c:=' ';
|
|
inc(inputpointer);
|
|
exit;
|
|
end;
|
|
{ can we read more from this file ? }
|
|
if (c<>#26) and (not endoffile) then
|
|
begin
|
|
readbuf;
|
|
inputpointer:=buf;
|
|
inputbuffer:=buf;
|
|
inputstart:=bufstart;
|
|
{ first line? }
|
|
if line_no=0 then
|
|
begin
|
|
c:=inputpointer^;
|
|
{ eat utf-8 signature? }
|
|
if (ord(inputpointer^)=$ef) and
|
|
(ord((inputpointer+1)^)=$bb) and
|
|
(ord((inputpointer+2)^)=$bf) then
|
|
begin
|
|
inc(inputpointer,3);
|
|
message(scan_c_switching_to_utf8);
|
|
current_settings.sourcecodepage:='utf8';
|
|
end;
|
|
|
|
line_no:=1;
|
|
if cs_asm_source in current_settings.globalswitches then
|
|
inputfile.setline(line_no,inputstart+inputpointer-inputbuffer);
|
|
end;
|
|
end
|
|
else
|
|
begin
|
|
{ load eof position in tokenpos/current_filepos }
|
|
gettokenpos;
|
|
{ close file }
|
|
closeinputfile;
|
|
{ no next module, than EOF }
|
|
if not assigned(inputfile.next) then
|
|
begin
|
|
c:=#26;
|
|
exit;
|
|
end;
|
|
{ load next file and reopen it }
|
|
nextfile;
|
|
tempopeninputfile;
|
|
{ status }
|
|
Message1(scan_t_back_in,inputfile.name^);
|
|
end;
|
|
{ load next char }
|
|
c:=inputpointer^;
|
|
inc(inputpointer);
|
|
until c<>#0; { if also end, then reload again }
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.insertmacro(const macname:string;p:pchar;len,line,fileindex:longint);
|
|
var
|
|
hp : tinputfile;
|
|
begin
|
|
{ save old postion }
|
|
dec(inputpointer);
|
|
tempcloseinputfile;
|
|
{ create macro 'file' }
|
|
{ use special name to dispose after !! }
|
|
hp:=do_openinputfile('_Macro_.'+macname);
|
|
addfile(hp);
|
|
with inputfile do
|
|
begin
|
|
setmacro(p,len);
|
|
{ local buffer }
|
|
inputbuffer:=buf;
|
|
inputpointer:=buf;
|
|
inputstart:=bufstart;
|
|
ref_index:=fileindex;
|
|
end;
|
|
{ reset line }
|
|
line_no:=line;
|
|
lastlinepos:=0;
|
|
lasttokenpos:=0;
|
|
nexttokenpos:=0;
|
|
{ load new c }
|
|
c:=inputpointer^;
|
|
inc(inputpointer);
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.do_gettokenpos(out tokenpos: longint; out filepos: tfileposinfo);
|
|
begin
|
|
tokenpos:=inputstart+(inputpointer-inputbuffer);
|
|
filepos.line:=line_no;
|
|
filepos.column:=tokenpos-lastlinepos;
|
|
filepos.fileindex:=inputfile.ref_index;
|
|
filepos.moduleindex:=current_module.unit_index;
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.gettokenpos;
|
|
{ load the values of tokenpos and lasttokenpos }
|
|
begin
|
|
do_gettokenpos(lasttokenpos,current_tokenpos);
|
|
current_filepos:=current_tokenpos;
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.cachenexttokenpos;
|
|
begin
|
|
do_gettokenpos(nexttokenpos,next_filepos);
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.setnexttoken;
|
|
begin
|
|
token:=nexttoken;
|
|
nexttoken:=NOTOKEN;
|
|
lasttokenpos:=nexttokenpos;
|
|
current_tokenpos:=next_filepos;
|
|
current_filepos:=current_tokenpos;
|
|
nexttokenpos:=0;
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.savetokenpos;
|
|
begin
|
|
oldlasttokenpos:=lasttokenpos;
|
|
oldcurrent_filepos:=current_filepos;
|
|
oldcurrent_tokenpos:=current_tokenpos;
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.restoretokenpos;
|
|
begin
|
|
lasttokenpos:=oldlasttokenpos;
|
|
current_filepos:=oldcurrent_filepos;
|
|
current_tokenpos:=oldcurrent_tokenpos;
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.inc_comment_level;
|
|
begin
|
|
if (m_nested_comment in current_settings.modeswitches) then
|
|
inc(comment_level)
|
|
else
|
|
comment_level:=1;
|
|
if (comment_level>1) then
|
|
begin
|
|
savetokenpos;
|
|
gettokenpos; { update for warning }
|
|
Message1(scan_w_comment_level,tostr(comment_level));
|
|
restoretokenpos;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.dec_comment_level;
|
|
begin
|
|
if (m_nested_comment in current_settings.modeswitches) then
|
|
dec(comment_level)
|
|
else
|
|
comment_level:=0;
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.linebreak;
|
|
var
|
|
cur : char;
|
|
begin
|
|
with inputfile do
|
|
begin
|
|
if (byte(inputpointer^)=0) and not(endoffile) then
|
|
begin
|
|
cur:=c;
|
|
reload;
|
|
if byte(cur)+byte(c)<>23 then
|
|
dec(inputpointer);
|
|
end
|
|
else
|
|
begin
|
|
{ Support all combination of #10 and #13 as line break }
|
|
if (byte(inputpointer^)+byte(c)=23) then
|
|
inc(inputpointer);
|
|
end;
|
|
{ Always return #10 as line break }
|
|
c:=#10;
|
|
{ increase line counters }
|
|
lastlinepos:=inputstart+(inputpointer-inputbuffer);
|
|
inc(line_no);
|
|
{ update linebuffer }
|
|
if cs_asm_source in current_settings.globalswitches then
|
|
inputfile.setline(line_no,lastlinepos);
|
|
{ update for status and call the show status routine,
|
|
but don't touch current_filepos ! }
|
|
savetokenpos;
|
|
gettokenpos; { update for v_status }
|
|
inc(status.compiledlines);
|
|
ShowStatus;
|
|
restoretokenpos;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.illegal_char(c:char);
|
|
var
|
|
s : string;
|
|
begin
|
|
if c in [#32..#255] then
|
|
s:=''''+c+''''
|
|
else
|
|
s:='#'+tostr(ord(c));
|
|
Message2(scan_f_illegal_char,s,'$'+hexstr(ord(c),2));
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.end_of_file;
|
|
begin
|
|
checkpreprocstack;
|
|
Message(scan_f_end_of_file);
|
|
end;
|
|
|
|
{-------------------------------------------
|
|
IF Conditional Handling
|
|
-------------------------------------------}
|
|
|
|
procedure tscannerfile.checkpreprocstack;
|
|
begin
|
|
{ check for missing ifdefs }
|
|
while assigned(preprocstack) do
|
|
begin
|
|
Message4(scan_e_endif_expected,preprocstring[preprocstack.typ],preprocstack.name,
|
|
preprocstack.owner.inputfile.name^,tostr(preprocstack.line_nb));
|
|
poppreprocstack;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.poppreprocstack;
|
|
var
|
|
hp : tpreprocstack;
|
|
begin
|
|
if assigned(preprocstack) then
|
|
begin
|
|
Message1(scan_c_endif_found,preprocstack.name);
|
|
hp:=preprocstack.next;
|
|
preprocstack.free;
|
|
preprocstack:=hp;
|
|
end
|
|
else
|
|
Message(scan_e_endif_without_if);
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.ifpreprocstack(atyp : preproctyp;compile_time_predicate:tcompile_time_predicate;messid:longint);
|
|
var
|
|
condition: Boolean;
|
|
valuedescr: String;
|
|
begin
|
|
if (preprocstack=nil) or preprocstack.accept then
|
|
condition:= compile_time_predicate(valuedescr)
|
|
else
|
|
begin
|
|
condition:= false;
|
|
valuedescr:= '';
|
|
end;
|
|
preprocstack:=tpreprocstack.create(atyp, condition, preprocstack);
|
|
preprocstack.name:=valuedescr;
|
|
preprocstack.line_nb:=line_no;
|
|
preprocstack.owner:=self;
|
|
if preprocstack.accept then
|
|
Message2(messid,preprocstack.name,'accepted')
|
|
else
|
|
Message2(messid,preprocstack.name,'rejected');
|
|
end;
|
|
|
|
procedure tscannerfile.elsepreprocstack;
|
|
begin
|
|
if assigned(preprocstack) and
|
|
(preprocstack.typ<>pp_else) then
|
|
begin
|
|
if (preprocstack.typ=pp_elseif) then
|
|
preprocstack.accept:=false
|
|
else
|
|
if (not(assigned(preprocstack.next)) or (preprocstack.next.accept)) then
|
|
preprocstack.accept:=not preprocstack.accept;
|
|
preprocstack.typ:=pp_else;
|
|
preprocstack.line_nb:=line_no;
|
|
if preprocstack.accept then
|
|
Message2(scan_c_else_found,preprocstack.name,'accepted')
|
|
else
|
|
Message2(scan_c_else_found,preprocstack.name,'rejected');
|
|
end
|
|
else
|
|
Message(scan_e_endif_without_if);
|
|
end;
|
|
|
|
procedure tscannerfile.elseifpreprocstack(compile_time_predicate:tcompile_time_predicate);
|
|
var
|
|
valuedescr: String;
|
|
begin
|
|
if assigned(preprocstack) and
|
|
(preprocstack.typ in [pp_if,pp_elseif]) then
|
|
begin
|
|
{ when the branch is accepted we use pp_elseif so we know that
|
|
all the next branches need to be rejected. when this branch is still
|
|
not accepted then leave it at pp_if }
|
|
if (preprocstack.typ=pp_elseif) then
|
|
preprocstack.accept:=false
|
|
else if (preprocstack.typ=pp_if) and preprocstack.accept then
|
|
begin
|
|
preprocstack.accept:=false;
|
|
preprocstack.typ:=pp_elseif;
|
|
end
|
|
else if (not(assigned(preprocstack.next)) or (preprocstack.next.accept))
|
|
and compile_time_predicate(valuedescr) then
|
|
begin
|
|
preprocstack.name:=valuedescr;
|
|
preprocstack.accept:=true;
|
|
preprocstack.typ:=pp_elseif;
|
|
end;
|
|
|
|
preprocstack.line_nb:=line_no;
|
|
if preprocstack.accept then
|
|
Message2(scan_c_else_found,preprocstack.name,'accepted')
|
|
else
|
|
Message2(scan_c_else_found,preprocstack.name,'rejected');
|
|
end
|
|
else
|
|
Message(scan_e_endif_without_if);
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.popreplaystack;
|
|
var
|
|
hp : treplaystack;
|
|
begin
|
|
if assigned(replaystack) then
|
|
begin
|
|
hp:=replaystack.next;
|
|
replaystack.free;
|
|
replaystack:=hp;
|
|
end;
|
|
end;
|
|
|
|
procedure tscannerfile.handleconditional(p:tdirectiveitem);
|
|
begin
|
|
savetokenpos;
|
|
repeat
|
|
current_scanner.gettokenpos;
|
|
p.proc();
|
|
{ accept the text ? }
|
|
if (current_scanner.preprocstack=nil) or current_scanner.preprocstack.accept then
|
|
break
|
|
else
|
|
begin
|
|
current_scanner.gettokenpos;
|
|
Message(scan_c_skipping_until);
|
|
repeat
|
|
current_scanner.skipuntildirective;
|
|
if not (m_mac in current_settings.modeswitches) then
|
|
p:=tdirectiveitem(turbo_scannerdirectives.Find(current_scanner.readid))
|
|
else
|
|
p:=tdirectiveitem(mac_scannerdirectives.Find(current_scanner.readid));
|
|
until assigned(p) and (p.is_conditional);
|
|
current_scanner.gettokenpos;
|
|
Message1(scan_d_handling_switch,'$'+p.name);
|
|
end;
|
|
until false;
|
|
restoretokenpos;
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.handledirectives;
|
|
var
|
|
t : tdirectiveitem;
|
|
hs : string;
|
|
begin
|
|
gettokenpos;
|
|
readchar; {Remove the $}
|
|
hs:=readid;
|
|
{ handle empty directive }
|
|
if hs='' then
|
|
begin
|
|
Message1(scan_w_illegal_switch,'$');
|
|
exit;
|
|
end;
|
|
{$ifdef PREPROCWRITE}
|
|
if parapreprocess then
|
|
begin
|
|
t:=Get_Directive(hs);
|
|
if not(is_conditional(t) or (t=_DIR_DEFINE) or (t=_DIR_UNDEF)) then
|
|
begin
|
|
preprocfile^.AddSpace;
|
|
preprocfile^.Add('{$'+hs+current_scanner.readcomment+'}');
|
|
exit;
|
|
end;
|
|
end;
|
|
{$endif PREPROCWRITE}
|
|
{ skip this directive? }
|
|
if (ignoredirectives.find(hs)<>nil) then
|
|
begin
|
|
if (comment_level>0) then
|
|
readcomment;
|
|
{ we've read the whole comment }
|
|
aktcommentstyle:=comment_none;
|
|
exit;
|
|
end;
|
|
{ Check for compiler switches }
|
|
while (length(hs)=1) and (c in ['-','+']) do
|
|
begin
|
|
HandleSwitch(hs[1],c);
|
|
current_scanner.readchar; {Remove + or -}
|
|
if c=',' then
|
|
begin
|
|
current_scanner.readchar; {Remove , }
|
|
{ read next switch, support $v+,$+}
|
|
hs:=current_scanner.readid;
|
|
if (hs='') then
|
|
begin
|
|
if (c='$') and (m_fpc in current_settings.modeswitches) then
|
|
begin
|
|
current_scanner.readchar; { skip $ }
|
|
hs:=current_scanner.readid;
|
|
end;
|
|
if (hs='') then
|
|
Message1(scan_w_illegal_directive,'$'+c);
|
|
end
|
|
else
|
|
Message1(scan_d_handling_switch,'$'+hs);
|
|
end
|
|
else
|
|
hs:='';
|
|
end;
|
|
{ directives may follow switches after a , }
|
|
if hs<>'' then
|
|
begin
|
|
if not (m_mac in current_settings.modeswitches) then
|
|
t:=tdirectiveitem(turbo_scannerdirectives.Find(hs))
|
|
else
|
|
t:=tdirectiveitem(mac_scannerdirectives.Find(hs));
|
|
|
|
if assigned(t) then
|
|
begin
|
|
if t.is_conditional then
|
|
handleconditional(t)
|
|
else
|
|
begin
|
|
Message1(scan_d_handling_switch,'$'+hs);
|
|
t.proc();
|
|
end;
|
|
end
|
|
else
|
|
begin
|
|
current_scanner.ignoredirectives.Add(hs,nil);
|
|
Message1(scan_w_illegal_directive,'$'+hs);
|
|
end;
|
|
{ conditionals already read the comment }
|
|
if (current_scanner.comment_level>0) then
|
|
current_scanner.readcomment;
|
|
{ we've read the whole comment }
|
|
aktcommentstyle:=comment_none;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.readchar;
|
|
begin
|
|
c:=inputpointer^;
|
|
if c=#0 then
|
|
reload
|
|
else
|
|
inc(inputpointer);
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.readstring;
|
|
var
|
|
i : longint;
|
|
err : boolean;
|
|
begin
|
|
err:=false;
|
|
i:=0;
|
|
repeat
|
|
case c of
|
|
'_',
|
|
'0'..'9',
|
|
'A'..'Z' :
|
|
begin
|
|
if i<255 then
|
|
begin
|
|
inc(i);
|
|
orgpattern[i]:=c;
|
|
pattern[i]:=c;
|
|
end
|
|
else
|
|
begin
|
|
if not err then
|
|
begin
|
|
Message(scan_e_string_exceeds_255_chars);
|
|
err:=true;
|
|
end;
|
|
end;
|
|
c:=inputpointer^;
|
|
inc(inputpointer);
|
|
end;
|
|
'a'..'z' :
|
|
begin
|
|
if i<255 then
|
|
begin
|
|
inc(i);
|
|
orgpattern[i]:=c;
|
|
pattern[i]:=chr(ord(c)-32)
|
|
end
|
|
else
|
|
begin
|
|
if not err then
|
|
begin
|
|
Message(scan_e_string_exceeds_255_chars);
|
|
err:=true;
|
|
end;
|
|
end;
|
|
c:=inputpointer^;
|
|
inc(inputpointer);
|
|
end;
|
|
#0 :
|
|
reload;
|
|
else
|
|
break;
|
|
end;
|
|
until false;
|
|
orgpattern[0]:=chr(i);
|
|
pattern[0]:=chr(i);
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.readnumber;
|
|
var
|
|
base,
|
|
i : longint;
|
|
begin
|
|
case c of
|
|
'%' :
|
|
begin
|
|
readchar;
|
|
base:=2;
|
|
pattern[1]:='%';
|
|
i:=1;
|
|
end;
|
|
'&' :
|
|
begin
|
|
readchar;
|
|
base:=8;
|
|
pattern[1]:='&';
|
|
i:=1;
|
|
end;
|
|
'$' :
|
|
begin
|
|
readchar;
|
|
base:=16;
|
|
pattern[1]:='$';
|
|
i:=1;
|
|
end;
|
|
else
|
|
begin
|
|
base:=10;
|
|
i:=0;
|
|
end;
|
|
end;
|
|
while ((base>=10) and (c in ['0'..'9'])) or
|
|
((base=16) and (c in ['A'..'F','a'..'f'])) or
|
|
((base=8) and (c in ['0'..'7'])) or
|
|
((base=2) and (c in ['0'..'1'])) do
|
|
begin
|
|
if i<255 then
|
|
begin
|
|
inc(i);
|
|
pattern[i]:=c;
|
|
end;
|
|
readchar;
|
|
end;
|
|
pattern[0]:=chr(i);
|
|
end;
|
|
|
|
|
|
function tscannerfile.readid:string;
|
|
begin
|
|
readstring;
|
|
readid:=pattern;
|
|
end;
|
|
|
|
|
|
function tscannerfile.readval:longint;
|
|
var
|
|
l : longint;
|
|
w : integer;
|
|
begin
|
|
readnumber;
|
|
val(pattern,l,w);
|
|
readval:=l;
|
|
end;
|
|
|
|
|
|
function tscannerfile.readval_asstring:string;
|
|
begin
|
|
readnumber;
|
|
readval_asstring:=pattern;
|
|
end;
|
|
|
|
|
|
function tscannerfile.readcomment:string;
|
|
var
|
|
i : longint;
|
|
begin
|
|
i:=0;
|
|
repeat
|
|
case c of
|
|
'{' :
|
|
begin
|
|
if aktcommentstyle=comment_tp then
|
|
inc_comment_level;
|
|
end;
|
|
'}' :
|
|
begin
|
|
if aktcommentstyle=comment_tp then
|
|
begin
|
|
readchar;
|
|
dec_comment_level;
|
|
if comment_level=0 then
|
|
break
|
|
else
|
|
continue;
|
|
end;
|
|
end;
|
|
'*' :
|
|
begin
|
|
if aktcommentstyle=comment_oldtp then
|
|
begin
|
|
readchar;
|
|
if c=')' then
|
|
begin
|
|
readchar;
|
|
dec_comment_level;
|
|
break;
|
|
end
|
|
else
|
|
{ Add both characters !!}
|
|
if (i<255) then
|
|
begin
|
|
inc(i);
|
|
readcomment[i]:='*';
|
|
if (i<255) then
|
|
begin
|
|
inc(i);
|
|
readcomment[i]:=c;
|
|
end;
|
|
end;
|
|
end
|
|
else
|
|
{ Not old TP comment, so add...}
|
|
begin
|
|
if (i<255) then
|
|
begin
|
|
inc(i);
|
|
readcomment[i]:='*';
|
|
end;
|
|
end;
|
|
end;
|
|
#10,#13 :
|
|
linebreak;
|
|
#26 :
|
|
end_of_file;
|
|
else
|
|
begin
|
|
if (i<255) then
|
|
begin
|
|
inc(i);
|
|
readcomment[i]:=c;
|
|
end;
|
|
end;
|
|
end;
|
|
readchar;
|
|
until false;
|
|
readcomment[0]:=chr(i);
|
|
end;
|
|
|
|
|
|
function tscannerfile.readquotedstring:string;
|
|
var
|
|
i : longint;
|
|
msgwritten : boolean;
|
|
begin
|
|
i:=0;
|
|
msgwritten:=false;
|
|
if (c='''') then
|
|
begin
|
|
repeat
|
|
readchar;
|
|
case c of
|
|
#26 :
|
|
end_of_file;
|
|
#10,#13 :
|
|
Message(scan_f_string_exceeds_line);
|
|
'''' :
|
|
begin
|
|
readchar;
|
|
if c<>'''' then
|
|
break;
|
|
end;
|
|
end;
|
|
if i<255 then
|
|
begin
|
|
inc(i);
|
|
result[i]:=c;
|
|
end
|
|
else
|
|
begin
|
|
if not msgwritten then
|
|
begin
|
|
Message(scan_e_string_exceeds_255_chars);
|
|
msgwritten:=true;
|
|
end;
|
|
end;
|
|
until false;
|
|
end;
|
|
result[0]:=chr(i);
|
|
end;
|
|
|
|
|
|
function tscannerfile.readstate:char;
|
|
var
|
|
state : char;
|
|
begin
|
|
state:=' ';
|
|
if c=' ' then
|
|
begin
|
|
current_scanner.skipspace;
|
|
current_scanner.readid;
|
|
if pattern='ON' then
|
|
state:='+'
|
|
else
|
|
if pattern='OFF' then
|
|
state:='-';
|
|
end
|
|
else
|
|
state:=c;
|
|
if not (state in ['+','-']) then
|
|
Message(scan_e_wrong_switch_toggle);
|
|
readstate:=state;
|
|
end;
|
|
|
|
|
|
function tscannerfile.readstatedefault:char;
|
|
var
|
|
state : char;
|
|
begin
|
|
state:=' ';
|
|
if c=' ' then
|
|
begin
|
|
current_scanner.skipspace;
|
|
current_scanner.readid;
|
|
if pattern='ON' then
|
|
state:='+'
|
|
else
|
|
if pattern='OFF' then
|
|
state:='-'
|
|
else
|
|
if pattern='DEFAULT' then
|
|
state:='*';
|
|
end
|
|
else
|
|
state:=c;
|
|
if not (state in ['+','-','*']) then
|
|
Message(scan_e_wrong_switch_toggle_default);
|
|
readstatedefault:=state;
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.skipspace;
|
|
begin
|
|
repeat
|
|
case c of
|
|
#26 :
|
|
begin
|
|
reload;
|
|
if (c=#26) and not assigned(inputfile.next) then
|
|
break;
|
|
continue;
|
|
end;
|
|
#10,
|
|
#13 :
|
|
linebreak;
|
|
#9,#11,#12,' ' :
|
|
;
|
|
else
|
|
break;
|
|
end;
|
|
readchar;
|
|
until false;
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.skipuntildirective;
|
|
var
|
|
found : longint;
|
|
next_char_loaded : boolean;
|
|
begin
|
|
found:=0;
|
|
next_char_loaded:=false;
|
|
repeat
|
|
case c of
|
|
#10,
|
|
#13 :
|
|
linebreak;
|
|
#26 :
|
|
begin
|
|
reload;
|
|
if (c=#26) and not assigned(inputfile.next) then
|
|
end_of_file;
|
|
continue;
|
|
end;
|
|
'{' :
|
|
begin
|
|
if (aktcommentstyle in [comment_tp,comment_none]) then
|
|
begin
|
|
aktcommentstyle:=comment_tp;
|
|
if (comment_level=0) then
|
|
found:=1;
|
|
inc_comment_level;
|
|
end;
|
|
end;
|
|
'*' :
|
|
begin
|
|
if (aktcommentstyle=comment_oldtp) then
|
|
begin
|
|
readchar;
|
|
if c=')' then
|
|
begin
|
|
dec_comment_level;
|
|
found:=0;
|
|
aktcommentstyle:=comment_none;
|
|
end
|
|
else
|
|
next_char_loaded:=true;
|
|
end
|
|
else
|
|
found := 0;
|
|
end;
|
|
'}' :
|
|
begin
|
|
if (aktcommentstyle=comment_tp) then
|
|
begin
|
|
dec_comment_level;
|
|
if (comment_level=0) then
|
|
aktcommentstyle:=comment_none;
|
|
found:=0;
|
|
end;
|
|
end;
|
|
'$' :
|
|
begin
|
|
if found=1 then
|
|
found:=2;
|
|
end;
|
|
'''' :
|
|
if (aktcommentstyle=comment_none) then
|
|
begin
|
|
repeat
|
|
readchar;
|
|
case c of
|
|
#26 :
|
|
end_of_file;
|
|
#10,#13 :
|
|
break;
|
|
'''' :
|
|
begin
|
|
readchar;
|
|
if c<>'''' then
|
|
begin
|
|
next_char_loaded:=true;
|
|
break;
|
|
end;
|
|
end;
|
|
end;
|
|
until false;
|
|
end;
|
|
'(' :
|
|
begin
|
|
if (aktcommentstyle=comment_none) then
|
|
begin
|
|
readchar;
|
|
if c='*' then
|
|
begin
|
|
readchar;
|
|
if c='$' then
|
|
begin
|
|
found:=2;
|
|
inc_comment_level;
|
|
aktcommentstyle:=comment_oldtp;
|
|
end
|
|
else
|
|
begin
|
|
skipoldtpcomment;
|
|
next_char_loaded:=true;
|
|
end;
|
|
end
|
|
else
|
|
next_char_loaded:=true;
|
|
end
|
|
else
|
|
found:=0;
|
|
end;
|
|
'/' :
|
|
begin
|
|
if (aktcommentstyle=comment_none) then
|
|
begin
|
|
readchar;
|
|
if c='/' then
|
|
skipdelphicomment;
|
|
next_char_loaded:=true;
|
|
end
|
|
else
|
|
found:=0;
|
|
end;
|
|
else
|
|
found:=0;
|
|
end;
|
|
if next_char_loaded then
|
|
next_char_loaded:=false
|
|
else
|
|
readchar;
|
|
until (found=2);
|
|
end;
|
|
|
|
|
|
{****************************************************************************
|
|
Comment Handling
|
|
****************************************************************************}
|
|
|
|
procedure tscannerfile.skipcomment;
|
|
begin
|
|
aktcommentstyle:=comment_tp;
|
|
readchar;
|
|
inc_comment_level;
|
|
{ handle compiler switches }
|
|
if (c='$') then
|
|
handledirectives;
|
|
{ handle_switches can dec comment_level, }
|
|
while (comment_level>0) do
|
|
begin
|
|
case c of
|
|
'{' :
|
|
inc_comment_level;
|
|
'}' :
|
|
dec_comment_level;
|
|
#10,#13 :
|
|
linebreak;
|
|
#26 :
|
|
begin
|
|
reload;
|
|
if (c=#26) and not assigned(inputfile.next) then
|
|
end_of_file;
|
|
continue;
|
|
end;
|
|
end;
|
|
readchar;
|
|
end;
|
|
aktcommentstyle:=comment_none;
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.skipdelphicomment;
|
|
begin
|
|
aktcommentstyle:=comment_delphi;
|
|
inc_comment_level;
|
|
readchar;
|
|
{ this is not supported }
|
|
if c='$' then
|
|
Message(scan_w_wrong_styled_switch);
|
|
{ skip comment }
|
|
while not (c in [#10,#13,#26]) do
|
|
readchar;
|
|
dec_comment_level;
|
|
aktcommentstyle:=comment_none;
|
|
end;
|
|
|
|
|
|
procedure tscannerfile.skipoldtpcomment;
|
|
var
|
|
found : longint;
|
|
begin
|
|
aktcommentstyle:=comment_oldtp;
|
|
inc_comment_level;
|
|
{ only load a char if last already processed,
|
|
was cause of bug1634 PM }
|
|
if c=#0 then
|
|
readchar;
|
|
{ this is now supported }
|
|
if (c='$') then
|
|
handledirectives;
|
|
{ skip comment }
|
|
while (comment_level>0) do
|
|
begin
|
|
found:=0;
|
|
repeat
|
|
case c of
|
|
#26 :
|
|
begin
|
|
reload;
|
|
if (c=#26) and not assigned(inputfile.next) then
|
|
end_of_file;
|
|
continue;
|
|
end;
|
|
#10,#13 :
|
|
begin
|
|
if found=4 then
|
|
inc_comment_level;
|
|
linebreak;
|
|
found:=0;
|
|
end;
|
|
'*' :
|
|
begin
|
|
if found=3 then
|
|
found:=4
|
|
else
|
|
found:=1;
|
|
end;
|
|
')' :
|
|
begin
|
|
if found in [1,4] then
|
|
begin
|
|
dec_comment_level;
|
|
if comment_level=0 then
|
|
found:=2
|
|
else
|
|
found:=0;
|
|
end
|
|
else
|
|
found:=0;
|
|
end;
|
|
'(' :
|
|
begin
|
|
if found=4 then
|
|
inc_comment_level;
|
|
found:=3;
|
|
end;
|
|
else
|
|
begin
|
|
if found=4 then
|
|
inc_comment_level;
|
|
found:=0;
|
|
end;
|
|
end;
|
|
readchar;
|
|
until (found=2);
|
|
end;
|
|
aktcommentstyle:=comment_none;
|
|
end;
|
|
|
|
|
|
|
|
{****************************************************************************
|
|
Token Scanner
|
|
****************************************************************************}
|
|
|
|
procedure tscannerfile.readtoken(allowrecordtoken:boolean);
|
|
var
|
|
code : integer;
|
|
len,
|
|
low,high,mid : longint;
|
|
w : word;
|
|
m : longint;
|
|
mac : tmacro;
|
|
asciinr : string[6];
|
|
iswidestring : boolean;
|
|
label
|
|
exit_label;
|
|
begin
|
|
flushpendingswitchesstate;
|
|
|
|
{ record tokens? }
|
|
if allowrecordtoken and
|
|
assigned(recordtokenbuf) then
|
|
recordtoken;
|
|
|
|
{ replay tokens? }
|
|
if assigned(replaytokenbuf) then
|
|
begin
|
|
replaytoken;
|
|
goto exit_label;
|
|
end;
|
|
|
|
{ was there already a token read, then return that token }
|
|
if nexttoken<>NOTOKEN then
|
|
begin
|
|
setnexttoken;
|
|
goto exit_label;
|
|
end;
|
|
|
|
{ Skip all spaces and comments }
|
|
repeat
|
|
case c of
|
|
'{' :
|
|
skipcomment;
|
|
#26 :
|
|
begin
|
|
reload;
|
|
if (c=#26) and not assigned(inputfile.next) then
|
|
break;
|
|
end;
|
|
' ',#9..#13 :
|
|
begin
|
|
{$ifdef PREPROCWRITE}
|
|
if parapreprocess then
|
|
begin
|
|
if c=#10 then
|
|
preprocfile.eolfound:=true
|
|
else
|
|
preprocfile.spacefound:=true;
|
|
end;
|
|
{$endif PREPROCWRITE}
|
|
skipspace;
|
|
end
|
|
else
|
|
break;
|
|
end;
|
|
until false;
|
|
|
|
{ Save current token position, for EOF its already loaded }
|
|
if c<>#26 then
|
|
gettokenpos;
|
|
|
|
{ Check first for a identifier/keyword, this is 20+% faster (PFV) }
|
|
if c in ['A'..'Z','a'..'z','_'] then
|
|
begin
|
|
readstring;
|
|
token:=_ID;
|
|
idtoken:=_ID;
|
|
{ keyword or any other known token,
|
|
pattern is always uppercased }
|
|
if (pattern[1]<>'_') and (length(pattern) in [tokenlenmin..tokenlenmax]) then
|
|
begin
|
|
low:=ord(tokenidx^[length(pattern),pattern[1]].first);
|
|
high:=ord(tokenidx^[length(pattern),pattern[1]].last);
|
|
while low<high do
|
|
begin
|
|
mid:=(high+low+1) shr 1;
|
|
if pattern<tokeninfo^[ttoken(mid)].str then
|
|
high:=mid-1
|
|
else
|
|
low:=mid;
|
|
end;
|
|
with tokeninfo^[ttoken(high)] do
|
|
if pattern=str then
|
|
begin
|
|
if keyword in current_settings.modeswitches then
|
|
if op=NOTOKEN then
|
|
token:=ttoken(high)
|
|
else
|
|
token:=op;
|
|
idtoken:=ttoken(high);
|
|
end;
|
|
end;
|
|
{ Only process identifiers and not keywords }
|
|
if token=_ID then
|
|
begin
|
|
{ this takes some time ... }
|
|
if (cs_support_macro in current_settings.moduleswitches) then
|
|
begin
|
|
mac:=tmacro(search_macro(pattern));
|
|
if assigned(mac) and (not mac.is_compiler_var) and (assigned(mac.buftext)) then
|
|
begin
|
|
if yylexcount<max_macro_nesting then
|
|
begin
|
|
mac.is_used:=true;
|
|
inc(yylexcount);
|
|
insertmacro(pattern,mac.buftext,mac.buflen,
|
|
mac.fileinfo.line,mac.fileinfo.fileindex);
|
|
{ handle empty macros }
|
|
if c=#0 then
|
|
reload;
|
|
readtoken(false);
|
|
{ that's all folks }
|
|
dec(yylexcount);
|
|
exit;
|
|
end
|
|
else
|
|
Message(scan_w_macro_too_deep);
|
|
end;
|
|
end;
|
|
end;
|
|
{ return token }
|
|
goto exit_label;
|
|
end
|
|
else
|
|
begin
|
|
idtoken:=_NOID;
|
|
case c of
|
|
|
|
'$' :
|
|
begin
|
|
readnumber;
|
|
token:=_INTCONST;
|
|
goto exit_label;
|
|
end;
|
|
|
|
'%' :
|
|
begin
|
|
if not(m_fpc in current_settings.modeswitches) then
|
|
Illegal_Char(c)
|
|
else
|
|
begin
|
|
readnumber;
|
|
token:=_INTCONST;
|
|
goto exit_label;
|
|
end;
|
|
end;
|
|
|
|
'&' :
|
|
begin
|
|
if [m_fpc,m_delphi] * current_settings.modeswitches <> [] then
|
|
begin
|
|
readnumber;
|
|
if length(pattern)=1 then
|
|
begin
|
|
readstring;
|
|
token:=_ID;
|
|
idtoken:=_ID;
|
|
end
|
|
else
|
|
token:=_INTCONST;
|
|
goto exit_label;
|
|
end
|
|
else if m_mac in current_settings.modeswitches then
|
|
begin
|
|
readchar;
|
|
token:=_AMPERSAND;
|
|
goto exit_label;
|
|
end
|
|
else
|
|
Illegal_Char(c);
|
|
end;
|
|
|
|
'0'..'9' :
|
|
begin
|
|
readnumber;
|
|
if (c in ['.','e','E']) then
|
|
begin
|
|
{ first check for a . }
|
|
if c='.' then
|
|
begin
|
|
cachenexttokenpos;
|
|
readchar;
|
|
{ is it a .. from a range? }
|
|
case c of
|
|
'.' :
|
|
begin
|
|
readchar;
|
|
token:=_INTCONST;
|
|
nexttoken:=_POINTPOINT;
|
|
goto exit_label;
|
|
end;
|
|
')' :
|
|
begin
|
|
readchar;
|
|
token:=_INTCONST;
|
|
nexttoken:=_RECKKLAMMER;
|
|
goto exit_label;
|
|
end;
|
|
end;
|
|
{ insert the number after the . }
|
|
pattern:=pattern+'.';
|
|
while c in ['0'..'9'] do
|
|
begin
|
|
pattern:=pattern+c;
|
|
readchar;
|
|
end;
|
|
end;
|
|
{ E can also follow after a point is scanned }
|
|
if c in ['e','E'] then
|
|
begin
|
|
pattern:=pattern+'E';
|
|
readchar;
|
|
if c in ['-','+'] then
|
|
begin
|
|
pattern:=pattern+c;
|
|
readchar;
|
|
end;
|
|
if not(c in ['0'..'9']) then
|
|
Illegal_Char(c);
|
|
while c in ['0'..'9'] do
|
|
begin
|
|
pattern:=pattern+c;
|
|
readchar;
|
|
end;
|
|
end;
|
|
token:=_REALNUMBER;
|
|
goto exit_label;
|
|
end;
|
|
token:=_INTCONST;
|
|
goto exit_label;
|
|
end;
|
|
|
|
';' :
|
|
begin
|
|
readchar;
|
|
token:=_SEMICOLON;
|
|
goto exit_label;
|
|
end;
|
|
|
|
'[' :
|
|
begin
|
|
readchar;
|
|
token:=_LECKKLAMMER;
|
|
goto exit_label;
|
|
end;
|
|
|
|
']' :
|
|
begin
|
|
readchar;
|
|
token:=_RECKKLAMMER;
|
|
goto exit_label;
|
|
end;
|
|
|
|
'(' :
|
|
begin
|
|
readchar;
|
|
case c of
|
|
'*' :
|
|
begin
|
|
c:=#0;{Signal skipoldtpcomment to reload a char }
|
|
skipoldtpcomment;
|
|
readtoken(false);
|
|
exit;
|
|
end;
|
|
'.' :
|
|
begin
|
|
readchar;
|
|
token:=_LECKKLAMMER;
|
|
goto exit_label;
|
|
end;
|
|
end;
|
|
token:=_LKLAMMER;
|
|
goto exit_label;
|
|
end;
|
|
|
|
')' :
|
|
begin
|
|
readchar;
|
|
token:=_RKLAMMER;
|
|
goto exit_label;
|
|
end;
|
|
|
|
'+' :
|
|
begin
|
|
readchar;
|
|
if (c='=') and (cs_support_c_operators in current_settings.moduleswitches) then
|
|
begin
|
|
readchar;
|
|
token:=_PLUSASN;
|
|
goto exit_label;
|
|
end;
|
|
token:=_PLUS;
|
|
goto exit_label;
|
|
end;
|
|
|
|
'-' :
|
|
begin
|
|
readchar;
|
|
if (c='=') and (cs_support_c_operators in current_settings.moduleswitches) then
|
|
begin
|
|
readchar;
|
|
token:=_MINUSASN;
|
|
goto exit_label;
|
|
end;
|
|
token:=_MINUS;
|
|
goto exit_label;
|
|
end;
|
|
|
|
':' :
|
|
begin
|
|
readchar;
|
|
if c='=' then
|
|
begin
|
|
readchar;
|
|
token:=_ASSIGNMENT;
|
|
goto exit_label;
|
|
end;
|
|
token:=_COLON;
|
|
goto exit_label;
|
|
end;
|
|
|
|
'*' :
|
|
begin
|
|
readchar;
|
|
if (c='=') and (cs_support_c_operators in current_settings.moduleswitches) then
|
|
begin
|
|
readchar;
|
|
token:=_STARASN;
|
|
end
|
|
else
|
|
if c='*' then
|
|
begin
|
|
readchar;
|
|
token:=_STARSTAR;
|
|
end
|
|
else
|
|
token:=_STAR;
|
|
goto exit_label;
|
|
end;
|
|
|
|
'/' :
|
|
begin
|
|
readchar;
|
|
case c of
|
|
'=' :
|
|
begin
|
|
if (cs_support_c_operators in current_settings.moduleswitches) then
|
|
begin
|
|
readchar;
|
|
token:=_SLASHASN;
|
|
goto exit_label;
|
|
end;
|
|
end;
|
|
'/' :
|
|
begin
|
|
skipdelphicomment;
|
|
readtoken(false);
|
|
exit;
|
|
end;
|
|
end;
|
|
token:=_SLASH;
|
|
goto exit_label;
|
|
end;
|
|
|
|
'|' :
|
|
if m_mac in current_settings.modeswitches then
|
|
begin
|
|
readchar;
|
|
token:=_PIPE;
|
|
goto exit_label;
|
|
end
|
|
else
|
|
Illegal_Char(c);
|
|
|
|
'=' :
|
|
begin
|
|
readchar;
|
|
token:=_EQUAL;
|
|
goto exit_label;
|
|
end;
|
|
|
|
'.' :
|
|
begin
|
|
readchar;
|
|
case c of
|
|
'.' :
|
|
begin
|
|
readchar;
|
|
case c of
|
|
'.' :
|
|
begin
|
|
readchar;
|
|
token:=_POINTPOINTPOINT;
|
|
goto exit_label;
|
|
end;
|
|
else
|
|
begin
|
|
token:=_POINTPOINT;
|
|
goto exit_label;
|
|
end;
|
|
end;
|
|
end;
|
|
')' :
|
|
begin
|
|
readchar;
|
|
token:=_RECKKLAMMER;
|
|
goto exit_label;
|
|
end;
|
|
end;
|
|
token:=_POINT;
|
|
goto exit_label;
|
|
end;
|
|
|
|
'@' :
|
|
begin
|
|
readchar;
|
|
token:=_KLAMMERAFFE;
|
|
goto exit_label;
|
|
end;
|
|
|
|
',' :
|
|
begin
|
|
readchar;
|
|
token:=_COMMA;
|
|
goto exit_label;
|
|
end;
|
|
|
|
'''','#','^' :
|
|
begin
|
|
len:=0;
|
|
cstringpattern:='';
|
|
iswidestring:=false;
|
|
if c='^' then
|
|
begin
|
|
readchar;
|
|
c:=upcase(c);
|
|
if (block_type in [bt_type,bt_const_type,bt_var_type]) or
|
|
(lasttoken=_ID) or (lasttoken=_NIL) or (lasttoken=_OPERATOR) or
|
|
(lasttoken=_RKLAMMER) or (lasttoken=_RECKKLAMMER) or (lasttoken=_CARET) then
|
|
begin
|
|
token:=_CARET;
|
|
goto exit_label;
|
|
end
|
|
else
|
|
begin
|
|
inc(len);
|
|
setlength(cstringpattern,256);
|
|
if c<#64 then
|
|
cstringpattern[len]:=chr(ord(c)+64)
|
|
else
|
|
cstringpattern[len]:=chr(ord(c)-64);
|
|
readchar;
|
|
end;
|
|
end;
|
|
repeat
|
|
case c of
|
|
'#' :
|
|
begin
|
|
readchar; { read # }
|
|
case c of
|
|
'$':
|
|
begin
|
|
readchar; { read leading $ }
|
|
asciinr:='$';
|
|
while (upcase(c) in ['A'..'F','0'..'9']) and (length(asciinr)<=5) do
|
|
begin
|
|
asciinr:=asciinr+c;
|
|
readchar;
|
|
end;
|
|
end;
|
|
'&':
|
|
begin
|
|
readchar; { read leading $ }
|
|
asciinr:='&';
|
|
while (upcase(c) in ['0'..'7']) and (length(asciinr)<=7) do
|
|
begin
|
|
asciinr:=asciinr+c;
|
|
readchar;
|
|
end;
|
|
end;
|
|
'%':
|
|
begin
|
|
readchar; { read leading $ }
|
|
asciinr:='%';
|
|
while (upcase(c) in ['0','1']) and (length(asciinr)<=17) do
|
|
begin
|
|
asciinr:=asciinr+c;
|
|
readchar;
|
|
end;
|
|
end;
|
|
else
|
|
begin
|
|
asciinr:='';
|
|
while (c in ['0'..'9']) and (length(asciinr)<=5) do
|
|
begin
|
|
asciinr:=asciinr+c;
|
|
readchar;
|
|
end;
|
|
end;
|
|
end;
|
|
val(asciinr,m,code);
|
|
if (asciinr='') or (code<>0) then
|
|
Message(scan_e_illegal_char_const)
|
|
else if (m<0) or (m>255) or (length(asciinr)>3) then
|
|
begin
|
|
if (m>=0) and (m<=65535) then
|
|
begin
|
|
if not iswidestring then
|
|
begin
|
|
if len>0 then
|
|
ascii2unicode(@cstringpattern[1],len,patternw)
|
|
else
|
|
ascii2unicode(nil,len,patternw);
|
|
iswidestring:=true;
|
|
len:=0;
|
|
end;
|
|
concatwidestringchar(patternw,tcompilerwidechar(m));
|
|
end
|
|
else
|
|
Message(scan_e_illegal_char_const)
|
|
end
|
|
else if iswidestring then
|
|
concatwidestringchar(patternw,asciichar2unicode(char(m)))
|
|
else
|
|
begin
|
|
if len>=length(cstringpattern) then
|
|
setlength(cstringpattern,length(cstringpattern)+256);
|
|
inc(len);
|
|
cstringpattern[len]:=chr(m);
|
|
end;
|
|
end;
|
|
'''' :
|
|
begin
|
|
repeat
|
|
readchar;
|
|
case c of
|
|
#26 :
|
|
end_of_file;
|
|
#10,#13 :
|
|
Message(scan_f_string_exceeds_line);
|
|
'''' :
|
|
begin
|
|
readchar;
|
|
if c<>'''' then
|
|
break;
|
|
end;
|
|
end;
|
|
{ interpret as utf-8 string? }
|
|
if (ord(c)>=$80) and (current_settings.sourcecodepage='utf8') then
|
|
begin
|
|
{ convert existing string to an utf-8 string }
|
|
if not iswidestring then
|
|
begin
|
|
if len>0 then
|
|
ascii2unicode(@cstringpattern[1],len,patternw)
|
|
else
|
|
ascii2unicode(nil,len,patternw);
|
|
iswidestring:=true;
|
|
len:=0;
|
|
end;
|
|
{ four or more chars aren't handled }
|
|
if (ord(c) and $f0)=$f0 then
|
|
message(scan_e_utf8_bigger_than_65535)
|
|
{ three chars }
|
|
else if (ord(c) and $e0)=$e0 then
|
|
begin
|
|
w:=ord(c) and $f;
|
|
readchar;
|
|
if (ord(c) and $c0)<>$80 then
|
|
message(scan_e_utf8_malformed);
|
|
w:=(w shl 6) or (ord(c) and $3f);
|
|
readchar;
|
|
if (ord(c) and $c0)<>$80 then
|
|
message(scan_e_utf8_malformed);
|
|
w:=(w shl 6) or (ord(c) and $3f);
|
|
concatwidestringchar(patternw,w);
|
|
end
|
|
{ two chars }
|
|
else if (ord(c) and $c0)<>0 then
|
|
begin
|
|
w:=ord(c) and $1f;
|
|
readchar;
|
|
if (ord(c) and $c0)<>$80 then
|
|
message(scan_e_utf8_malformed);
|
|
w:=(w shl 6) or (ord(c) and $3f);
|
|
concatwidestringchar(patternw,w);
|
|
end
|
|
{ illegal }
|
|
else if (ord(c) and $80)<>0 then
|
|
message(scan_e_utf8_malformed)
|
|
else
|
|
concatwidestringchar(patternw,tcompilerwidechar(c))
|
|
end
|
|
else if iswidestring then
|
|
begin
|
|
if current_settings.sourcecodepage='utf8' then
|
|
concatwidestringchar(patternw,ord(c))
|
|
else
|
|
concatwidestringchar(patternw,asciichar2unicode(c))
|
|
end
|
|
else
|
|
begin
|
|
if len>=length(cstringpattern) then
|
|
setlength(cstringpattern,length(cstringpattern)+256);
|
|
inc(len);
|
|
cstringpattern[len]:=c;
|
|
end;
|
|
until false;
|
|
end;
|
|
'^' :
|
|
begin
|
|
readchar;
|
|
c:=upcase(c);
|
|
if c<#64 then
|
|
c:=chr(ord(c)+64)
|
|
else
|
|
c:=chr(ord(c)-64);
|
|
|
|
if iswidestring then
|
|
concatwidestringchar(patternw,asciichar2unicode(c))
|
|
else
|
|
begin
|
|
if len>=length(cstringpattern) then
|
|
setlength(cstringpattern,length(cstringpattern)+256);
|
|
inc(len);
|
|
cstringpattern[len]:=c;
|
|
end;
|
|
|
|
readchar;
|
|
end;
|
|
else
|
|
break;
|
|
end;
|
|
until false;
|
|
{ strings with length 1 become const chars }
|
|
if iswidestring then
|
|
begin
|
|
if patternw^.len=1 then
|
|
token:=_CWCHAR
|
|
else
|
|
token:=_CWSTRING;
|
|
end
|
|
else
|
|
begin
|
|
setlength(cstringpattern,len);
|
|
if length(cstringpattern)=1 then
|
|
begin
|
|
token:=_CCHAR;
|
|
pattern:=cstringpattern;
|
|
end
|
|
else
|
|
token:=_CSTRING;
|
|
end;
|
|
goto exit_label;
|
|
end;
|
|
|
|
'>' :
|
|
begin
|
|
readchar;
|
|
if (block_type in [bt_type,bt_var_type,bt_const_type]) then
|
|
token:=_RSHARPBRACKET
|
|
else
|
|
begin
|
|
case c of
|
|
'=' :
|
|
begin
|
|
readchar;
|
|
token:=_GTE;
|
|
goto exit_label;
|
|
end;
|
|
'>' :
|
|
begin
|
|
readchar;
|
|
token:=_OP_SHR;
|
|
goto exit_label;
|
|
end;
|
|
'<' :
|
|
begin { >< is for a symetric diff for sets }
|
|
readchar;
|
|
token:=_SYMDIF;
|
|
goto exit_label;
|
|
end;
|
|
end;
|
|
token:=_GT;
|
|
end;
|
|
goto exit_label;
|
|
end;
|
|
|
|
'<' :
|
|
begin
|
|
readchar;
|
|
if (block_type in [bt_type,bt_var_type,bt_const_type]) then
|
|
token:=_LSHARPBRACKET
|
|
else
|
|
begin
|
|
case c of
|
|
'>' :
|
|
begin
|
|
readchar;
|
|
token:=_UNEQUAL;
|
|
goto exit_label;
|
|
end;
|
|
'=' :
|
|
begin
|
|
readchar;
|
|
token:=_LTE;
|
|
goto exit_label;
|
|
end;
|
|
'<' :
|
|
begin
|
|
readchar;
|
|
token:=_OP_SHL;
|
|
goto exit_label;
|
|
end;
|
|
end;
|
|
token:=_LT;
|
|
end;
|
|
goto exit_label;
|
|
end;
|
|
|
|
#26 :
|
|
begin
|
|
token:=_EOF;
|
|
checkpreprocstack;
|
|
goto exit_label;
|
|
end;
|
|
else
|
|
Illegal_Char(c);
|
|
end;
|
|
end;
|
|
exit_label:
|
|
lasttoken:=token;
|
|
end;
|
|
|
|
|
|
function tscannerfile.readpreproc:ttoken;
|
|
begin
|
|
skipspace;
|
|
case c of
|
|
'_',
|
|
'A'..'Z',
|
|
'a'..'z' :
|
|
begin
|
|
current_scanner.preproc_pattern:=readid;
|
|
readpreproc:=_ID;
|
|
end;
|
|
'0'..'9' :
|
|
begin
|
|
current_scanner.preproc_pattern:=readval_asstring;
|
|
{ realnumber? }
|
|
if c='.' then
|
|
begin
|
|
readchar;
|
|
while c in ['0'..'9'] do
|
|
begin
|
|
current_scanner.preproc_pattern:=current_scanner.preproc_pattern+c;
|
|
readchar;
|
|
end;
|
|
end;
|
|
readpreproc:=_ID;
|
|
end;
|
|
'$','%','&' :
|
|
begin
|
|
current_scanner.preproc_pattern:=readval_asstring;
|
|
readpreproc:=_ID;
|
|
end;
|
|
',' :
|
|
begin
|
|
readchar;
|
|
readpreproc:=_COMMA;
|
|
end;
|
|
'}' :
|
|
begin
|
|
readpreproc:=_END;
|
|
end;
|
|
'(' :
|
|
begin
|
|
readchar;
|
|
readpreproc:=_LKLAMMER;
|
|
end;
|
|
')' :
|
|
begin
|
|
readchar;
|
|
readpreproc:=_RKLAMMER;
|
|
end;
|
|
'[' :
|
|
begin
|
|
readchar;
|
|
readpreproc:=_LECKKLAMMER;
|
|
end;
|
|
']' :
|
|
begin
|
|
readchar;
|
|
readpreproc:=_RECKKLAMMER;
|
|
end;
|
|
'+' :
|
|
begin
|
|
readchar;
|
|
readpreproc:=_PLUS;
|
|
end;
|
|
'-' :
|
|
begin
|
|
readchar;
|
|
readpreproc:=_MINUS;
|
|
end;
|
|
'*' :
|
|
begin
|
|
readchar;
|
|
readpreproc:=_STAR;
|
|
end;
|
|
'/' :
|
|
begin
|
|
readchar;
|
|
readpreproc:=_SLASH;
|
|
end;
|
|
'=' :
|
|
begin
|
|
readchar;
|
|
readpreproc:=_EQUAL;
|
|
end;
|
|
'>' :
|
|
begin
|
|
readchar;
|
|
if c='=' then
|
|
begin
|
|
readchar;
|
|
readpreproc:=_GTE;
|
|
end
|
|
else
|
|
readpreproc:=_GT;
|
|
end;
|
|
'<' :
|
|
begin
|
|
readchar;
|
|
case c of
|
|
'>' :
|
|
begin
|
|
readchar;
|
|
readpreproc:=_UNEQUAL;
|
|
end;
|
|
'=' :
|
|
begin
|
|
readchar;
|
|
readpreproc:=_LTE;
|
|
end;
|
|
else
|
|
readpreproc:=_LT;
|
|
end;
|
|
end;
|
|
#26 :
|
|
begin
|
|
readpreproc:=_EOF;
|
|
checkpreprocstack;
|
|
end;
|
|
else
|
|
Illegal_Char(c);
|
|
end;
|
|
end;
|
|
|
|
|
|
function tscannerfile.asmgetcharstart : char;
|
|
begin
|
|
{ return first the character already
|
|
available in c }
|
|
lastasmgetchar:=c;
|
|
result:=asmgetchar;
|
|
end;
|
|
|
|
|
|
function tscannerfile.asmgetchar : char;
|
|
begin
|
|
if lastasmgetchar<>#0 then
|
|
begin
|
|
c:=lastasmgetchar;
|
|
lastasmgetchar:=#0;
|
|
end
|
|
else
|
|
readchar;
|
|
if in_asm_string then
|
|
begin
|
|
asmgetchar:=c;
|
|
exit;
|
|
end;
|
|
repeat
|
|
case c of
|
|
// the { ... } is used in ARM assembler to define register sets, so we can't used
|
|
// it as comment, either (* ... *), /* ... */ or // ... should be used instead.
|
|
// But compiler directives {$...} are allowed in ARM assembler.
|
|
'{' :
|
|
begin
|
|
{$ifdef arm}
|
|
readchar;
|
|
dec(inputpointer);
|
|
if c<>'$' then
|
|
begin
|
|
asmgetchar:='{';
|
|
exit;
|
|
end
|
|
else
|
|
{$endif arm}
|
|
skipcomment;
|
|
end;
|
|
#10,#13 :
|
|
begin
|
|
linebreak;
|
|
asmgetchar:=c;
|
|
exit;
|
|
end;
|
|
#26 :
|
|
begin
|
|
reload;
|
|
if (c=#26) and not assigned(inputfile.next) then
|
|
end_of_file;
|
|
continue;
|
|
end;
|
|
'/' :
|
|
begin
|
|
readchar;
|
|
if c='/' then
|
|
skipdelphicomment
|
|
else
|
|
begin
|
|
asmgetchar:='/';
|
|
lastasmgetchar:=c;
|
|
exit;
|
|
end;
|
|
end;
|
|
'(' :
|
|
begin
|
|
readchar;
|
|
if c='*' then
|
|
begin
|
|
c:=#0;{Signal skipoldtpcomment to reload a char }
|
|
skipoldtpcomment;
|
|
end
|
|
else
|
|
begin
|
|
asmgetchar:='(';
|
|
lastasmgetchar:=c;
|
|
exit;
|
|
end;
|
|
end;
|
|
else
|
|
begin
|
|
asmgetchar:=c;
|
|
exit;
|
|
end;
|
|
end;
|
|
until false;
|
|
end;
|
|
|
|
|
|
{*****************************************************************************
|
|
Helpers
|
|
*****************************************************************************}
|
|
|
|
procedure AddDirective(const s:string; dm: tdirectivemode; p:tdirectiveproc);
|
|
begin
|
|
if dm in [directive_all, directive_turbo] then
|
|
tdirectiveitem.create(turbo_scannerdirectives,s,p);
|
|
if dm in [directive_all, directive_mac] then
|
|
tdirectiveitem.create(mac_scannerdirectives,s,p);
|
|
end;
|
|
|
|
procedure AddConditional(const s:string; dm: tdirectivemode; p:tdirectiveproc);
|
|
begin
|
|
if dm in [directive_all, directive_turbo] then
|
|
tdirectiveitem.createcond(turbo_scannerdirectives,s,p);
|
|
if dm in [directive_all, directive_mac] then
|
|
tdirectiveitem.createcond(mac_scannerdirectives,s,p);
|
|
end;
|
|
|
|
{*****************************************************************************
|
|
Initialization
|
|
*****************************************************************************}
|
|
|
|
procedure InitScanner;
|
|
begin
|
|
InitWideString(patternw);
|
|
turbo_scannerdirectives:=TFPHashObjectList.Create;
|
|
mac_scannerdirectives:=TFPHashObjectList.Create;
|
|
|
|
{ Common directives and conditionals }
|
|
AddDirective('I',directive_all, @dir_include);
|
|
AddDirective('DEFINE',directive_all, @dir_define);
|
|
AddDirective('UNDEF',directive_all, @dir_undef);
|
|
|
|
AddConditional('IF',directive_all, @dir_if);
|
|
AddConditional('IFDEF',directive_all, @dir_ifdef);
|
|
AddConditional('IFNDEF',directive_all, @dir_ifndef);
|
|
AddConditional('ELSE',directive_all, @dir_else);
|
|
AddConditional('ELSEIF',directive_all, @dir_elseif);
|
|
AddConditional('ENDIF',directive_all, @dir_endif);
|
|
|
|
{ Directives and conditionals for all modes except mode macpas}
|
|
AddDirective('INCLUDE',directive_turbo, @dir_include);
|
|
AddDirective('LIBPREFIX',directive_turbo, @dir_libprefix);
|
|
AddDirective('LIBSUFFIX',directive_turbo, @dir_libsuffix);
|
|
AddDirective('EXTENSION',directive_turbo, @dir_extension);
|
|
|
|
AddConditional('IFEND',directive_turbo, @dir_endif);
|
|
AddConditional('IFOPT',directive_turbo, @dir_ifopt);
|
|
|
|
{ Directives and conditionals for mode macpas: }
|
|
AddDirective('SETC',directive_mac, @dir_setc);
|
|
AddDirective('DEFINEC',directive_mac, @dir_definec);
|
|
AddDirective('UNDEFC',directive_mac, @dir_undef);
|
|
|
|
AddConditional('IFC',directive_mac, @dir_if);
|
|
AddConditional('ELSEC',directive_mac, @dir_else);
|
|
AddConditional('ELIFC',directive_mac, @dir_elseif);
|
|
AddConditional('ENDC',directive_mac, @dir_endif);
|
|
end;
|
|
|
|
|
|
procedure DoneScanner;
|
|
begin
|
|
turbo_scannerdirectives.Free;
|
|
mac_scannerdirectives.Free;
|
|
DoneWideString(patternw);
|
|
end;
|
|
|
|
|
|
end.
|