12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012112212312412512612712812913013113213313413513613713813914014114214314414514614714814915015115215315415515615715815916016116216316416516616716816917017117217317417517617717817918018118218318418518618718818919019119219319419519619719819920020120220320420520620720820921021121221321421521621721821922022122222322422522622722822923023123223323423523623723823924024124224324424524624724824925025125225325425525625725825926026126226326426526626726826927027127227327427527627727827928028128228328428528628728828929029129229329429529629729829930030130230330430530630730830931031131231331431531631731831932032132232332432532632732832933033133233333433533633733833934034134234334434534634734834935035135235335435535635735835936036136236336436536636736836937037137237337437537637737837938038138238338438538638738838939039139239339439539639739839940040140240340440540640740840941041141241341441541641741841942042142242342442542642742842943043143243343443543643743843944044144244344444544644744844945045145245345445545645745845946046146246346446546646746846947047147247347447547647747847948048148248348448548648748848949049149249349449549649749849950050150250350450550650750850951051151251351451551651751851952052152252352452552652752852953053153253353453553653753853954054154254354454554654754854955055155255355455555655755855956056156256356456556656756856957057157257357457557657757857958058158258358458558658758858959059159259359459559659759859960060160260360460560660760860961061161261361461561661761861962062162262362462562662762862963063163263363463563663763863964064164264364464564664764864965065165265365465565665765865966066166266366466566666766866967067167267367467567667767867968068168268368468568668768868969069169269369469569669769869970070170270370470570670770870971071171271371471571671771871972072172272372472572672772872973073173273373473573673773873974074174274374474574674774874975075175275375475575675775875976076176276376476576676776876977077177277377477577677777877978078178278378478578678778878979079179279379479579679779879980080180280380480580680780880981081181281381481581681781881982082182282382482582682782882983083183283383483583683783883984084184284384484584684784884985085185285385485585685785885986086186286386486586686786886987087187287387487587687787887988088188288388488588688788888989089189289389489589689789889990090190290390490590690790890991091191291391491591691791891992092192292392492592692792892993093193293393493593693793893994094194294394494594694794894995095195295395495595695795895996096196296396496596696796896997097197297397497597697797897998098198298398498598698798898999099199299399499599699799899910001001100210031004100510061007100810091010101110121013101410151016101710181019102010211022102310241025102610271028102910301031103210331034103510361037103810391040104110421043104410451046104710481049105010511052105310541055105610571058105910601061106210631064106510661067106810691070107110721073107410751076107710781079108010811082108310841085108610871088108910901091109210931094109510961097109810991100110111021103110411051106110711081109111011111112111311141115111611171118111911201121112211231124112511261127112811291130113111321133113411351136113711381139114011411142114311441145 |
- {
- Copyright (c) 1998-2006 by Florian Klaempfl
- This unit provides some help routines for type handling
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- ****************************************************************************
- }
- unit defutil;
- {$i fpcdefs.inc}
- interface
- uses
- cclasses,
- globtype,globals,constexp,node,
- symconst,symbase,symtype,symdef,
- cgbase,cpubase;
- type
- tmmxtype = (mmxno,mmxu8bit,mmxs8bit,mmxu16bit,mmxs16bit,
- mmxu32bit,mmxs32bit,mmxfixed16,mmxsingle);
- {*****************************************************************************
- Basic type functions
- *****************************************************************************}
- {# Returns true, if definition defines an ordinal type }
- function is_ordinal(def : tdef) : boolean;
- {# Returns true, if definition defines a string type }
- function is_string(def : tdef): boolean;
- {# Returns the minimal integer value of the type }
- function get_min_value(def : tdef) : TConstExprInt;
- {# Returns the maximal integer value of the type }
- function get_max_value(def : tdef) : TConstExprInt;
- {# Returns basetype of the specified integer range }
- function range_to_basetype(l,h:TConstExprInt):tordtype;
- procedure range_to_type(l,h:TConstExprInt;var def:tdef);
- procedure int_to_type(v:TConstExprInt;var def:tdef);
- {# Returns true, if definition defines an integer type }
- function is_integer(def : tdef) : boolean;
- {# Returns true if definition is a boolean }
- function is_boolean(def : tdef) : boolean;
- {# Returns true if definition is a Pascal-style boolean (1 = true, zero = false) }
- function is_pasbool(def : tdef) : boolean;
- {# Returns true if definition is a C-style boolean (non-zero value = true, zero = false) }
- function is_cbool(def : tdef) : boolean;
- {# Returns true if definition is a char
- This excludes the unicode char.
- }
- function is_char(def : tdef) : boolean;
- {# Returns true if definition is a widechar }
- function is_widechar(def : tdef) : boolean;
- {# Returns true if definition is either an AnsiChar or a WideChar }
- function is_anychar(def : tdef) : boolean;
- {# Returns true if definition is a void}
- function is_void(def : tdef) : boolean;
- {# Returns true if definition is a smallset}
- function is_smallset(p : tdef) : boolean;
- {# Returns true, if def defines a signed data type
- (only for ordinal types)
- }
- function is_signed(def : tdef) : boolean;
- {# Returns whether def_from's range is comprised in def_to's if both are
- orddefs, false otherwise }
- function is_in_limit(def_from,def_to : tdef) : boolean;
- {# Returns whether def is reference counted }
- function is_managed_type(def: tdef) : boolean;{$ifdef USEINLINE}inline;{$endif}
- { function is_in_limit_value(val_from:TConstExprInt;def_from,def_to : tdef) : boolean;}
- {*****************************************************************************
- Array helper functions
- *****************************************************************************}
- {# Returns true, if p points to a zero based (non special like open or
- dynamic array def).
- This is mainly used to see if the array
- is convertable to a pointer
- }
- function is_zero_based_array(p : tdef) : boolean;
- {# Returns true if p points to an open array definition }
- function is_open_array(p : tdef) : boolean;
- {# Returns true if p points to a dynamic array definition }
- function is_dynamic_array(p : tdef) : boolean;
- {# Returns true, if p points to an array of const definition }
- function is_array_constructor(p : tdef) : boolean;
- {# Returns true, if p points to a variant array }
- function is_variant_array(p : tdef) : boolean;
- {# Returns true, if p points to an array of const }
- function is_array_of_const(p : tdef) : boolean;
- {# Returns true, if p points any kind of special array
- That is if the array is an open array, a variant
- array, an array constants constructor, or an
- array of const.
- Bitpacked arrays aren't special in this regard though.
- }
- function is_special_array(p : tdef) : boolean;
- {# Returns true if p is a bitpacked array }
- function is_packed_array(p: tdef) : boolean;
- {# Returns true if p is a bitpacked record }
- function is_packed_record_or_object(p: tdef) : boolean;
- {# Returns true if p is a char array def }
- function is_chararray(p : tdef) : boolean;
- {# Returns true if p is a wide char array def }
- function is_widechararray(p : tdef) : boolean;
- {# Returns true if p is a open char array def }
- function is_open_chararray(p : tdef) : boolean;
- {# Returns true if p is a open wide char array def }
- function is_open_widechararray(p : tdef) : boolean;
- {*****************************************************************************
- String helper functions
- *****************************************************************************}
- {# Returns true if p points to an open string type }
- function is_open_string(p : tdef) : boolean;
- {# Returns true if p is an ansi string type }
- function is_ansistring(p : tdef) : boolean;
- {# Returns true if p is a long string type }
- function is_longstring(p : tdef) : boolean;
- {# returns true if p is a wide string type }
- function is_widestring(p : tdef) : boolean;
- {# true if p is an unicode string def }
- function is_unicodestring(p : tdef) : boolean;
- {# returns true if p is a wide or unicode string type }
- function is_wide_or_unicode_string(p : tdef) : boolean;
- {# Returns true if p is a short string type }
- function is_shortstring(p : tdef) : boolean;
- {# Returns true if p is a pchar def }
- function is_pchar(p : tdef) : boolean;
- {# Returns true if p is a pwidechar def }
- function is_pwidechar(p : tdef) : boolean;
- {# Returns true if p is a voidpointer def }
- function is_voidpointer(p : tdef) : boolean;
- {# Returns true, if definition is a float }
- function is_fpu(def : tdef) : boolean;
- {# Returns true, if def is a currency type }
- function is_currency(def : tdef) : boolean;
- {# Returns true, if def is a single type }
- function is_single(def : tdef) : boolean;
- {# Returns true, if def is a double type }
- function is_double(def : tdef) : boolean;
- {# Returns true, if def is an extended type }
- function is_extended(def : tdef) : boolean;
- {# Returns true, if definition is a "real" real (i.e. single/double/extended) }
- function is_real(def : tdef) : boolean;
- {# Returns true, if def is a 32 bit integer type }
- function is_32bitint(def : tdef) : boolean;
- {# Returns true, if def is a 64 bit integer type }
- function is_64bitint(def : tdef) : boolean;
- {# Returns true, if def is a 64 bit type }
- function is_64bit(def : tdef) : boolean;
- {# If @var(l) isn't in the range of todef a range check error (if not explicit) is generated and
- the value is placed within the range
- }
- procedure testrange(todef : tdef;var l : tconstexprint;explicit,forcerangecheck:boolean);
- {# Returns the range of def, where @var(l) is the low-range and @var(h) is
- the high-range.
- }
- procedure getrange(def : tdef;out l, h : TConstExprInt);
- { type being a vector? }
- function is_vector(p : tdef) : boolean;
- { some type helper routines for MMX support }
- function is_mmx_able_array(p : tdef) : boolean;
- {# returns the mmx type }
- function mmx_type(p : tdef) : tmmxtype;
- { returns if the passed type (array) fits into an mm register }
- function fits_in_mm_register(p : tdef) : boolean;
- {# From a definition return the abstract code generator size enum. It is
- to note that the value returned can be @var(OS_NO) }
- function def_cgsize(def: tdef): tcgsize;
- {# returns true, if the type passed is can be used with windows automation }
- function is_automatable(p : tdef) : boolean;
- { # returns true if the procdef has no parameters and no specified return type }
- function is_bareprocdef(pd : tprocdef): boolean;
- { # returns the smallest base integer type whose range encompasses that of
- both ld and rd; if keep_sign_if_equal, then if ld and rd have the same
- signdness, the result will also get that signdness }
- function get_common_intdef(ld, rd: torddef; keep_sign_if_equal: boolean): torddef;
- { # returns whether the type is potentially a valid type of/for an "univ" parameter
- (basically: it must have a compile-time size) }
- function is_valid_univ_para_type(def: tdef): boolean;
- { # returns whether the procdef/procvardef represents a nested procedure
- or not }
- function is_nested_pd(def: tabstractprocdef): boolean;{$ifdef USEINLINE}inline;{$endif}
- implementation
- uses
- systems,verbose;
- { returns true, if def uses FPU }
- function is_fpu(def : tdef) : boolean;
- begin
- is_fpu:=(def.typ=floatdef);
- end;
- { returns true, if def is a currency type }
- function is_currency(def : tdef) : boolean;
- begin
- case s64currencytype.typ of
- orddef :
- result:=(def.typ=orddef) and
- (torddef(s64currencytype).ordtype=torddef(def).ordtype);
- floatdef :
- result:=(def.typ=floatdef) and
- (tfloatdef(s64currencytype).floattype=tfloatdef(def).floattype);
- else
- internalerror(200304222);
- end;
- end;
- { returns true, if def is a single type }
- function is_single(def : tdef) : boolean;
- begin
- result:=(def.typ=floatdef) and
- (tfloatdef(def).floattype=s32real);
- end;
- { returns true, if def is a double type }
- function is_double(def : tdef) : boolean;
- begin
- result:=(def.typ=floatdef) and
- (tfloatdef(def).floattype=s64real);
- end;
- function is_extended(def : tdef) : boolean;
- begin
- result:=(def.typ=floatdef) and
- (tfloatdef(def).floattype in [s80real,sc80real]);
- end;
- { returns true, if definition is a "real" real (i.e. single/double/extended) }
- function is_real(def : tdef) : boolean;
- begin
- result:=(def.typ=floatdef) and
- (tfloatdef(def).floattype in [s32real,s64real,s80real]);
- end;
- function range_to_basetype(l,h:TConstExprInt):tordtype;
- begin
- { prefer signed over unsigned }
- if (l>=int64(-128)) and (h<=127) then
- range_to_basetype:=s8bit
- else if (l>=0) and (h<=255) then
- range_to_basetype:=u8bit
- else if (l>=int64(-32768)) and (h<=32767) then
- range_to_basetype:=s16bit
- else if (l>=0) and (h<=65535) then
- range_to_basetype:=u16bit
- else if (l>=int64(low(longint))) and (h<=high(longint)) then
- range_to_basetype:=s32bit
- else if (l>=low(cardinal)) and (h<=high(cardinal)) then
- range_to_basetype:=u32bit
- else
- range_to_basetype:=s64bit;
- end;
- procedure range_to_type(l,h:TConstExprInt;var def:tdef);
- begin
- { prefer signed over unsigned }
- if (l>=int64(-128)) and (h<=127) then
- def:=s8inttype
- else if (l>=0) and (h<=255) then
- def:=u8inttype
- else if (l>=int64(-32768)) and (h<=32767) then
- def:=s16inttype
- else if (l>=0) and (h<=65535) then
- def:=u16inttype
- else if (l>=int64(low(longint))) and (h<=high(longint)) then
- def:=s32inttype
- else if (l>=low(cardinal)) and (h<=high(cardinal)) then
- def:=u32inttype
- else if (l>=low(int64)) and (h<=high(int64)) then
- def:=s64inttype
- else
- def:=u64inttype;
- end;
- procedure int_to_type(v:TConstExprInt;var def:tdef);
- begin
- range_to_type(v,v,def);
- end;
- { true if p is an ordinal }
- function is_ordinal(def : tdef) : boolean;
- var
- dt : tordtype;
- begin
- case def.typ of
- orddef :
- begin
- dt:=torddef(def).ordtype;
- is_ordinal:=dt in [uchar,uwidechar,
- u8bit,u16bit,u32bit,u64bit,
- s8bit,s16bit,s32bit,s64bit,
- pasbool,bool8bit,bool16bit,bool32bit,bool64bit];
- end;
- enumdef :
- is_ordinal:=true;
- else
- is_ordinal:=false;
- end;
- end;
- { true if p is a string }
- function is_string(def : tdef) : boolean;
- begin
- is_string := (assigned(def) and (def.typ = stringdef));
- end;
- { returns the min. value of the type }
- function get_min_value(def : tdef) : TConstExprInt;
- begin
- case def.typ of
- orddef:
- result:=torddef(def).low;
- enumdef:
- result:=int64(tenumdef(def).min);
- else
- result:=0;
- end;
- end;
- { returns the max. value of the type }
- function get_max_value(def : tdef) : TConstExprInt;
- begin
- case def.typ of
- orddef:
- result:=torddef(def).high;
- enumdef:
- result:=tenumdef(def).max;
- else
- result:=0;
- end;
- end;
- { true if p is an integer }
- function is_integer(def : tdef) : boolean;
- begin
- result:=(def.typ=orddef) and
- (torddef(def).ordtype in [u8bit,u16bit,u32bit,u64bit,
- s8bit,s16bit,s32bit,s64bit]);
- end;
- { true if p is a boolean }
- function is_boolean(def : tdef) : boolean;
- begin
- result:=(def.typ=orddef) and
- (torddef(def).ordtype in [pasbool,bool8bit,bool16bit,bool32bit,bool64bit]);
- end;
- function is_pasbool(def : tdef) : boolean;
- begin
- result:=(def.typ=orddef) and
- (torddef(def).ordtype = pasbool);
- end;
- { true if def is a C-style boolean (non-zero value = true, zero = false) }
- function is_cbool(def : tdef) : boolean;
- begin
- result:=(def.typ=orddef) and
- (torddef(def).ordtype in [bool8bit,bool16bit,bool32bit,bool64bit]);
- end;
- { true if p is a void }
- function is_void(def : tdef) : boolean;
- begin
- result:=(def.typ=orddef) and
- (torddef(def).ordtype=uvoid);
- end;
- { true if p is a char }
- function is_char(def : tdef) : boolean;
- begin
- result:=(def.typ=orddef) and
- (torddef(def).ordtype=uchar);
- end;
- { true if p is a wchar }
- function is_widechar(def : tdef) : boolean;
- begin
- result:=(def.typ=orddef) and
- (torddef(def).ordtype=uwidechar);
- end;
- { true if p is a char or wchar }
- function is_anychar(def : tdef) : boolean;
- begin
- result:=(def.typ=orddef) and
- (torddef(def).ordtype in [uchar,uwidechar])
- end;
- { true if p is signed (integer) }
- function is_signed(def : tdef) : boolean;
- begin
- case def.typ of
- orddef :
- result:=torddef(def).low < 0;
- enumdef :
- result:=tenumdef(def).min < 0;
- arraydef :
- result:=is_signed(tarraydef(def).rangedef);
- else
- result:=false;
- end;
- end;
- function is_in_limit(def_from,def_to : tdef) : boolean;
- begin
- if (def_from.typ<>def_to.typ) or
- not(def_from.typ in [orddef,enumdef,setdef]) then
- begin
- is_in_limit := false;
- exit;
- end;
- case def_from.typ of
- orddef:
- is_in_limit:=(torddef(def_from).low>=torddef(def_to).low) and
- (torddef(def_from).high<=torddef(def_to).high);
- enumdef:
- is_in_limit:=(tenumdef(def_from).min>=tenumdef(def_to).min) and
- (tenumdef(def_from).max<=tenumdef(def_to).max);
- setdef:
- is_in_limit:=(tsetdef(def_from).setbase>=tsetdef(def_to).setbase) and
- (tsetdef(def_from).setmax<=tsetdef(def_to).setmax);
- else
- is_in_limit:=false;
- end;
- end;
- function is_managed_type(def: tdef): boolean;{$ifdef USEINLINE}inline;{$endif}
- begin
- result:=def.needs_inittable;
- end;
- { true, if p points to an open array def }
- function is_open_string(p : tdef) : boolean;
- begin
- is_open_string:=(p.typ=stringdef) and
- (tstringdef(p).stringtype=st_shortstring) and
- (tstringdef(p).len=0);
- end;
- { true, if p points to a zero based array def }
- function is_zero_based_array(p : tdef) : boolean;
- begin
- result:=(p.typ=arraydef) and
- (tarraydef(p).lowrange=0) and
- not(is_special_array(p));
- end;
- { true if p points to a dynamic array def }
- function is_dynamic_array(p : tdef) : boolean;
- begin
- result:=(p.typ=arraydef) and
- (ado_IsDynamicArray in tarraydef(p).arrayoptions);
- end;
- { true, if p points to an open array def }
- function is_open_array(p : tdef) : boolean;
- begin
- { check for s32inttype is needed, because for u32bit the high
- range is also -1 ! (PFV) }
- result:=(p.typ=arraydef) and
- (tarraydef(p).rangedef=s32inttype) and
- (tarraydef(p).lowrange=0) and
- (tarraydef(p).highrange=-1) and
- ((tarraydef(p).arrayoptions * [ado_IsVariant,ado_IsArrayOfConst,ado_IsConstructor,ado_IsDynamicArray])=[]);
- end;
- { true, if p points to an array of const def }
- function is_array_constructor(p : tdef) : boolean;
- begin
- result:=(p.typ=arraydef) and
- (ado_IsConstructor in tarraydef(p).arrayoptions);
- end;
- { true, if p points to a variant array }
- function is_variant_array(p : tdef) : boolean;
- begin
- result:=(p.typ=arraydef) and
- (ado_IsVariant in tarraydef(p).arrayoptions);
- end;
- { true, if p points to an array of const }
- function is_array_of_const(p : tdef) : boolean;
- begin
- result:=(p.typ=arraydef) and
- (ado_IsArrayOfConst in tarraydef(p).arrayoptions);
- end;
- { true, if p points to a special array, bitpacked arrays aren't special in this regard though }
- function is_special_array(p : tdef) : boolean;
- begin
- result:=(p.typ=arraydef) and
- (
- ((tarraydef(p).arrayoptions * [ado_IsVariant,ado_IsArrayOfConst,ado_IsConstructor,ado_IsDynamicArray])<>[]) or
- is_open_array(p)
- );
- end;
- { true if p is an ansi string def }
- function is_ansistring(p : tdef) : boolean;
- begin
- is_ansistring:=(p.typ=stringdef) and
- (tstringdef(p).stringtype=st_ansistring);
- end;
- { true if p is an long string def }
- function is_longstring(p : tdef) : boolean;
- begin
- is_longstring:=(p.typ=stringdef) and
- (tstringdef(p).stringtype=st_longstring);
- end;
- { true if p is an wide string def }
- function is_widestring(p : tdef) : boolean;
- begin
- is_widestring:=(p.typ=stringdef) and
- (tstringdef(p).stringtype=st_widestring);
- end;
- { true if p is an wide string def }
- function is_wide_or_unicode_string(p : tdef) : boolean;
- begin
- is_wide_or_unicode_string:=(p.typ=stringdef) and
- (tstringdef(p).stringtype in [st_widestring,st_unicodestring]);
- end;
- { true if p is an unicode string def }
- function is_unicodestring(p : tdef) : boolean;
- begin
- is_unicodestring:=(p.typ=stringdef) and
- (tstringdef(p).stringtype=st_unicodestring);
- end;
- { true if p is an short string def }
- function is_shortstring(p : tdef) : boolean;
- begin
- is_shortstring:=(p.typ=stringdef) and
- (tstringdef(p).stringtype=st_shortstring);
- end;
- { true if p is bit packed array def }
- function is_packed_array(p: tdef) : boolean;
- begin
- is_packed_array :=
- (p.typ = arraydef) and
- (ado_IsBitPacked in tarraydef(p).arrayoptions);
- end;
- { true if p is bit packed record def }
- function is_packed_record_or_object(p: tdef) : boolean;
- begin
- is_packed_record_or_object :=
- (p.typ in [recorddef,objectdef]) and
- (tabstractrecorddef(p).is_packed);
- end;
- { true if p is a char array def }
- function is_chararray(p : tdef) : boolean;
- begin
- is_chararray:=(p.typ=arraydef) and
- is_char(tarraydef(p).elementdef) and
- not(is_special_array(p));
- end;
- { true if p is a widechar array def }
- function is_widechararray(p : tdef) : boolean;
- begin
- is_widechararray:=(p.typ=arraydef) and
- is_widechar(tarraydef(p).elementdef) and
- not(is_special_array(p));
- end;
- { true if p is a open char array def }
- function is_open_chararray(p : tdef) : boolean;
- begin
- is_open_chararray:= is_open_array(p) and
- is_char(tarraydef(p).elementdef);
- end;
- { true if p is a open wide char array def }
- function is_open_widechararray(p : tdef) : boolean;
- begin
- is_open_widechararray:= is_open_array(p) and
- is_widechar(tarraydef(p).elementdef);
- end;
- { true if p is a pchar def }
- function is_pchar(p : tdef) : boolean;
- begin
- is_pchar:=(p.typ=pointerdef) and
- (is_char(tpointerdef(p).pointeddef) or
- (is_zero_based_array(tpointerdef(p).pointeddef) and
- is_chararray(tpointerdef(p).pointeddef)));
- end;
- { true if p is a pchar def }
- function is_pwidechar(p : tdef) : boolean;
- begin
- is_pwidechar:=(p.typ=pointerdef) and
- (is_widechar(tpointerdef(p).pointeddef) or
- (is_zero_based_array(tpointerdef(p).pointeddef) and
- is_widechararray(tpointerdef(p).pointeddef)));
- end;
- { true if p is a voidpointer def }
- function is_voidpointer(p : tdef) : boolean;
- begin
- is_voidpointer:=(p.typ=pointerdef) and
- (tpointerdef(p).pointeddef.typ=orddef) and
- (torddef(tpointerdef(p).pointeddef).ordtype=uvoid);
- end;
- { true, if def is a 32 bit int type }
- function is_32bitint(def : tdef) : boolean;
- begin
- result:=(def.typ=orddef) and (torddef(def).ordtype in [u32bit,s32bit])
- end;
- { true, if def is a 64 bit int type }
- function is_64bitint(def : tdef) : boolean;
- begin
- is_64bitint:=(def.typ=orddef) and (torddef(def).ordtype in [u64bit,s64bit])
- end;
- { true, if def is a 64 bit type }
- function is_64bit(def : tdef) : boolean;
- begin
- is_64bit:=(def.typ=orddef) and (torddef(def).ordtype in [u64bit,s64bit,scurrency])
- end;
- { if l isn't in the range of todef a range check error (if not explicit) is generated and
- the value is placed within the range }
- procedure testrange(todef : tdef;var l : tconstexprint;explicit,forcerangecheck:boolean);
- var
- lv,hv: TConstExprInt;
- begin
- { for 64 bit types we need only to check if it is less than }
- { zero, if def is a qword node }
- getrange(todef,lv,hv);
- if (l<lv) or (l>hv) then
- begin
- if not explicit then
- begin
- if ((todef.typ=enumdef) and
- { delphi allows range check errors in
- enumeration type casts FK }
- not(m_delphi in current_settings.modeswitches)) or
- (cs_check_range in current_settings.localswitches) or
- forcerangecheck then
- Message(parser_e_range_check_error)
- else
- Message(parser_w_range_check_error);
- end;
- { Fix the value to fit in the allocated space for this type of variable }
- case longint(todef.size) of
- 1: l := l and $ff;
- 2: l := l and $ffff;
- 4: l := l and $ffffffff;
- end;
- {reset sign, i.e. converting -1 to qword changes the value to high(qword)}
- l.signed:=false;
- { do sign extension if necessary (JM) }
- if is_signed(todef) then
- begin
- case longint(todef.size) of
- 1: l.svalue := shortint(l.svalue);
- 2: l.svalue := smallint(l.svalue);
- 4: l.svalue := longint(l.svalue);
- end;
- l.signed:=true;
- end;
- end;
- end;
- { return the range from def in l and h }
- procedure getrange(def : tdef;out l, h : TConstExprInt);
- begin
- case def.typ of
- orddef :
- begin
- l:=torddef(def).low;
- h:=torddef(def).high;
- end;
- enumdef :
- begin
- l:=int64(tenumdef(def).min);
- h:=int64(tenumdef(def).max);
- end;
- arraydef :
- begin
- l:=int64(tarraydef(def).lowrange);
- h:=int64(tarraydef(def).highrange);
- end;
- else
- internalerror(200611054);
- end;
- end;
- function mmx_type(p : tdef) : tmmxtype;
- begin
- mmx_type:=mmxno;
- if is_mmx_able_array(p) then
- begin
- if tarraydef(p).elementdef.typ=floatdef then
- case tfloatdef(tarraydef(p).elementdef).floattype of
- s32real:
- mmx_type:=mmxsingle;
- end
- else
- case torddef(tarraydef(p).elementdef).ordtype of
- u8bit:
- mmx_type:=mmxu8bit;
- s8bit:
- mmx_type:=mmxs8bit;
- u16bit:
- mmx_type:=mmxu16bit;
- s16bit:
- mmx_type:=mmxs16bit;
- u32bit:
- mmx_type:=mmxu32bit;
- s32bit:
- mmx_type:=mmxs32bit;
- end;
- end;
- end;
- function is_vector(p : tdef) : boolean;
- begin
- result:=(p.typ=arraydef) and
- not(is_special_array(p)) and
- (tarraydef(p).elementdef.typ=floatdef) and
- (tfloatdef(tarraydef(p).elementdef).floattype in [s32real,s64real]);
- end;
- { returns if the passed type (array) fits into an mm register }
- function fits_in_mm_register(p : tdef) : boolean;
- begin
- {$ifdef x86}
- result:= is_vector(p) and
- (
- (tarraydef(p).elementdef.typ=floatdef) and
- (
- (tarraydef(p).lowrange=0) and
- (tarraydef(p).highrange=3) and
- (tfloatdef(tarraydef(p).elementdef).floattype=s32real)
- )
- ) or
- (
- (tarraydef(p).elementdef.typ=floatdef) and
- (
- (tarraydef(p).lowrange=0) and
- (tarraydef(p).highrange=1) and
- (tfloatdef(tarraydef(p).elementdef).floattype=s64real)
- )
- );
- {$else x86}
- result:=false;
- {$endif x86}
- end;
- function is_mmx_able_array(p : tdef) : boolean;
- begin
- {$ifdef SUPPORT_MMX}
- if (cs_mmx_saturation in current_settings.localswitches) then
- begin
- is_mmx_able_array:=(p.typ=arraydef) and
- not(is_special_array(p)) and
- (
- (
- (tarraydef(p).elementdef.typ=orddef) and
- (
- (
- (tarraydef(p).lowrange=0) and
- (tarraydef(p).highrange=1) and
- (torddef(tarraydef(p).elementdef).ordtype in [u32bit,s32bit])
- )
- or
- (
- (tarraydef(p).lowrange=0) and
- (tarraydef(p).highrange=3) and
- (torddef(tarraydef(p).elementdef).ordtype in [u16bit,s16bit])
- )
- )
- )
- or
- (
- (
- (tarraydef(p).elementdef.typ=floatdef) and
- (
- (tarraydef(p).lowrange=0) and
- (tarraydef(p).highrange=1) and
- (tfloatdef(tarraydef(p).elementdef).floattype=s32real)
- )
- )
- )
- );
- end
- else
- begin
- is_mmx_able_array:=(p.typ=arraydef) and
- (
- (
- (tarraydef(p).elementdef.typ=orddef) and
- (
- (
- (tarraydef(p).lowrange=0) and
- (tarraydef(p).highrange=1) and
- (torddef(tarraydef(p).elementdef).ordtype in [u32bit,s32bit])
- )
- or
- (
- (tarraydef(p).lowrange=0) and
- (tarraydef(p).highrange=3) and
- (torddef(tarraydef(p).elementdef).ordtype in [u16bit,s16bit])
- )
- or
- (
- (tarraydef(p).lowrange=0) and
- (tarraydef(p).highrange=7) and
- (torddef(tarraydef(p).elementdef).ordtype in [u8bit,s8bit])
- )
- )
- )
- or
- (
- (tarraydef(p).elementdef.typ=floatdef) and
- (
- (tarraydef(p).lowrange=0) and
- (tarraydef(p).highrange=1) and
- (tfloatdef(tarraydef(p).elementdef).floattype=s32real)
- )
- )
- );
- end;
- {$else SUPPORT_MMX}
- is_mmx_able_array:=false;
- {$endif SUPPORT_MMX}
- end;
- function def_cgsize(def: tdef): tcgsize;
- begin
- case def.typ of
- orddef,
- enumdef,
- setdef:
- begin
- result:=int_cgsize(def.size);
- if is_signed(def) then
- result:=tcgsize(ord(result)+(ord(OS_S8)-ord(OS_8)));
- end;
- classrefdef,
- pointerdef:
- result := OS_ADDR;
- procvardef:
- begin
- if not tprocvardef(def).is_addressonly then
- {$if sizeof(pint) = 4}
- result:=OS_64
- {$else} {$if sizeof(pint) = 8}
- result:=OS_128
- {$else}
- internalerror(200707141)
- {$endif} {$endif}
- else
- result:=OS_ADDR;
- end;
- stringdef :
- begin
- if is_ansistring(def) or is_wide_or_unicode_string(def) then
- result := OS_ADDR
- else
- result:=int_cgsize(def.size);
- end;
- objectdef :
- begin
- if is_implicit_pointer_object_type(def) then
- result := OS_ADDR
- else
- result:=int_cgsize(def.size);
- end;
- floatdef:
- if cs_fp_emulation in current_settings.moduleswitches then
- result:=int_cgsize(def.size)
- else
- result:=tfloat2tcgsize[tfloatdef(def).floattype];
- recorddef :
- result:=int_cgsize(def.size);
- arraydef :
- begin
- if not is_special_array(def) then
- result := int_cgsize(def.size)
- else
- begin
- if is_dynamic_array(def) then
- result := OS_ADDR
- else
- result := OS_NO;
- end;
- end;
- else
- begin
- { undefined size }
- result:=OS_NO;
- end;
- end;
- end;
- { In Windows 95 era, ordinals were restricted to [u8bit,s32bit,s16bit,bool16bit]
- As of today, both signed and unsigned types from 8 to 64 bits are supported. }
- function is_automatable(p : tdef) : boolean;
- begin
- result:=false;
- case p.typ of
- orddef:
- result:=torddef(p).ordtype in [u8bit,s8bit,u16bit,s16bit,u32bit,s32bit,
- u64bit,s64bit,bool16bit];
- floatdef:
- result:=tfloatdef(p).floattype in [s64currency,s64real,s32real];
- stringdef:
- result:=tstringdef(p).stringtype in [st_ansistring,st_widestring,st_unicodestring];
- variantdef:
- result:=true;
- objectdef:
- result:=tobjectdef(p).objecttype in [odt_interfacecom,odt_dispinterface,odt_interfacecorba];
- end;
- end;
- {# returns true, if the type passed is a varset }
- function is_smallset(p : tdef) : boolean;
- begin
- result:=(p.typ=setdef) and (p.size in [1,2,4])
- end;
- function is_bareprocdef(pd : tprocdef): boolean;
- begin
- result:=(pd.maxparacount=0) and
- (is_void(pd.returndef) or
- (pd.proctypeoption = potype_constructor));
- end;
- function get_common_intdef(ld, rd: torddef; keep_sign_if_equal: boolean): torddef;
- var
- llow, lhigh: tconstexprint;
- begin
- llow:=rd.low;
- if llow<ld.low then
- llow:=ld.low;
- lhigh:=rd.high;
- if lhigh<ld.high then
- lhigh:=ld.high;
- case range_to_basetype(llow,lhigh) of
- s8bit:
- result:=torddef(s8inttype);
- u8bit:
- result:=torddef(u8inttype);
- s16bit:
- result:=torddef(s16inttype);
- u16bit:
- result:=torddef(u16inttype);
- s32bit:
- result:=torddef(s32inttype);
- u32bit:
- result:=torddef(u32inttype);
- s64bit:
- result:=torddef(s64inttype);
- u64bit:
- result:=torddef(u64inttype);
- else
- begin
- { avoid warning }
- result:=nil;
- internalerror(200802291);
- end;
- end;
- if keep_sign_if_equal and
- (is_signed(ld)=is_signed(rd)) and
- (is_signed(result)<>is_signed(ld)) then
- case result.ordtype of
- s8bit:
- result:=torddef(u8inttype);
- u8bit:
- result:=torddef(s16inttype);
- s16bit:
- result:=torddef(u16inttype);
- u16bit:
- result:=torddef(s32inttype);
- s32bit:
- result:=torddef(u32inttype);
- u32bit:
- result:=torddef(s64inttype);
- s64bit:
- result:=torddef(u64inttype);
- end;
- end;
- function is_valid_univ_para_type(def: tdef): boolean;
- begin
- result:=
- not is_open_array(def) and
- not is_void(def) and
- (def.typ<>formaldef);
- end;
- function is_nested_pd(def: tabstractprocdef): boolean;{$ifdef USEINLINE}inline;{$endif}
- begin
- result:=def.parast.symtablelevel>normal_function_level;
- end;
- end.
|