mirror of
https://gitlab.com/freepascal.org/fpc/source.git
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f5c52b25cd
tobjectdef.needs_inittable returns false for classes nowadays (and already
since quite some time)
* nevertheless replaced all usages in the compiler of x.needs_inittable with
is_managed_type(x) (in case some other condition is added again in the
future) and removed all remaining accompanying "and not is_class(x)"
checks
git-svn-id: trunk@15320 -
1133 lines
35 KiB
ObjectPascal
1133 lines
35 KiB
ObjectPascal
{
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Copyright (c) 1998-2006 by Florian Klaempfl
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This unit provides some help routines for type handling
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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 defutil;
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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,node,
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symconst,symbase,symtype,symdef,
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cgbase,cpubase;
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type
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tmmxtype = (mmxno,mmxu8bit,mmxs8bit,mmxu16bit,mmxs16bit,
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mmxu32bit,mmxs32bit,mmxfixed16,mmxsingle);
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{*****************************************************************************
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Basic type functions
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*****************************************************************************}
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{# Returns true, if definition defines an ordinal type }
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function is_ordinal(def : tdef) : boolean;
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{# Returns true, if definition defines a string type }
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function is_string(def : tdef): boolean;
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{# Returns the minimal integer value of the type }
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function get_min_value(def : tdef) : TConstExprInt;
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{# Returns the maximal integer value of the type }
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function get_max_value(def : tdef) : TConstExprInt;
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{# Returns basetype of the specified integer range }
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function range_to_basetype(l,h:TConstExprInt):tordtype;
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procedure range_to_type(l,h:TConstExprInt;var def:tdef);
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procedure int_to_type(v:TConstExprInt;var def:tdef);
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{# Returns true, if definition defines an integer type }
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function is_integer(def : tdef) : boolean;
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{# Returns true if definition is a boolean }
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function is_boolean(def : tdef) : boolean;
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{# Returns true if definition is a Pascal-style boolean (1 = true, zero = false) }
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function is_pasbool(def : tdef) : boolean;
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{# Returns true if definition is a C-style boolean (non-zero value = true, zero = false) }
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function is_cbool(def : tdef) : boolean;
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{# Returns true if definition is a char
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This excludes the unicode char.
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}
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function is_char(def : tdef) : boolean;
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{# Returns true if definition is a widechar }
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function is_widechar(def : tdef) : boolean;
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{# Returns true if definition is either an AnsiChar or a WideChar }
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function is_anychar(def : tdef) : boolean;
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{# Returns true if definition is a void}
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function is_void(def : tdef) : boolean;
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{# Returns true if definition is a smallset}
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function is_smallset(p : tdef) : boolean;
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{# Returns true, if def defines a signed data type
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(only for ordinal types)
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}
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function is_signed(def : tdef) : boolean;
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{# Returns whether def_from's range is comprised in def_to's if both are
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orddefs, false otherwise }
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function is_in_limit(def_from,def_to : tdef) : boolean;
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{# Returns whether def is reference counted }
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function is_managed_type(def: tdef) : boolean;{$ifdef USEINLINE}inline;{$endif}
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{ function is_in_limit_value(val_from:TConstExprInt;def_from,def_to : tdef) : boolean;}
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{*****************************************************************************
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Array helper functions
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*****************************************************************************}
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{# Returns true, if p points to a zero based (non special like open or
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dynamic array def).
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This is mainly used to see if the array
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is convertable to a pointer
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}
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function is_zero_based_array(p : tdef) : boolean;
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{# Returns true if p points to an open array definition }
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function is_open_array(p : tdef) : boolean;
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{# Returns true if p points to a dynamic array definition }
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function is_dynamic_array(p : tdef) : boolean;
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{# Returns true, if p points to an array of const definition }
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function is_array_constructor(p : tdef) : boolean;
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{# Returns true, if p points to a variant array }
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function is_variant_array(p : tdef) : boolean;
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{# Returns true, if p points to an array of const }
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function is_array_of_const(p : tdef) : boolean;
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{# Returns true, if p points any kind of special array
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That is if the array is an open array, a variant
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array, an array constants constructor, or an
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array of const.
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Bitpacked arrays aren't special in this regard though.
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}
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function is_special_array(p : tdef) : boolean;
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{# Returns true if p is a bitpacked array }
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function is_packed_array(p: tdef) : boolean;
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{# Returns true if p is a bitpacked record }
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function is_packed_record_or_object(p: tdef) : boolean;
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{# Returns true if p is a char array def }
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function is_chararray(p : tdef) : boolean;
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{# Returns true if p is a wide char array def }
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function is_widechararray(p : tdef) : boolean;
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{# Returns true if p is a open char array def }
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function is_open_chararray(p : tdef) : boolean;
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{# Returns true if p is a open wide char array def }
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function is_open_widechararray(p : tdef) : boolean;
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{*****************************************************************************
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String helper functions
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*****************************************************************************}
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{# Returns true if p points to an open string type }
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function is_open_string(p : tdef) : boolean;
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{# Returns true if p is an ansi string type }
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function is_ansistring(p : tdef) : boolean;
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{# Returns true if p is a long string type }
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function is_longstring(p : tdef) : boolean;
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{# returns true if p is a wide string type }
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function is_widestring(p : tdef) : boolean;
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{# true if p is an unicode string def }
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function is_unicodestring(p : tdef) : boolean;
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{# returns true if p is a wide or unicode string type }
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function is_wide_or_unicode_string(p : tdef) : boolean;
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{# Returns true if p is a short string type }
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function is_shortstring(p : tdef) : boolean;
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{# Returns true if p is a pchar def }
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function is_pchar(p : tdef) : boolean;
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{# Returns true if p is a pwidechar def }
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function is_pwidechar(p : tdef) : boolean;
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{# Returns true if p is a voidpointer def }
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function is_voidpointer(p : tdef) : boolean;
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{# Returns true, if definition is a float }
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function is_fpu(def : tdef) : boolean;
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{# Returns true, if def is a currency type }
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function is_currency(def : tdef) : boolean;
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{# Returns true, if def is a single type }
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function is_single(def : tdef) : boolean;
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{# Returns true, if def is a double type }
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function is_double(def : tdef) : boolean;
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{# Returns true, if def is an extended type }
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function is_extended(def : tdef) : boolean;
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{# Returns true, if definition is a "real" real (i.e. single/double/extended) }
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function is_real(def : tdef) : boolean;
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{# Returns true, if def is a 32 bit integer type }
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function is_32bitint(def : tdef) : boolean;
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{# Returns true, if def is a 64 bit integer type }
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function is_64bitint(def : tdef) : boolean;
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{# Returns true, if def is a 64 bit type }
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function is_64bit(def : tdef) : boolean;
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{# If @var(l) isn't in the range of todef a range check error (if not explicit) is generated and
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the value is placed within the range
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}
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procedure testrange(todef : tdef;var l : tconstexprint;explicit:boolean);
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{# Returns the range of def, where @var(l) is the low-range and @var(h) is
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the high-range.
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}
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procedure getrange(def : tdef;out l, h : TConstExprInt);
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{ type being a vector? }
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function is_vector(p : tdef) : boolean;
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{ some type helper routines for MMX support }
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function is_mmx_able_array(p : tdef) : boolean;
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{# returns the mmx type }
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function mmx_type(p : tdef) : tmmxtype;
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{ returns if the passed type (array) fits into an mm register }
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function fits_in_mm_register(p : tdef) : boolean;
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{# From a definition return the abstract code generator size enum. It is
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to note that the value returned can be @var(OS_NO) }
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function def_cgsize(def: tdef): tcgsize;
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{# returns true, if the type passed is can be used with windows automation }
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function is_automatable(p : tdef) : boolean;
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{ # returns true if the procdef has no parameters and no specified return type }
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function is_bareprocdef(pd : tprocdef): boolean;
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{ # returns the smallest base integer type whose range encompasses that of
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both ld and rd; if keep_sign_if_equal, then if ld and rd have the same
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signdness, the result will also get that signdness }
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function get_common_intdef(ld, rd: torddef; keep_sign_if_equal: boolean): torddef;
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{ # returns whether the type is potentially a valid type of/for an "univ" parameter
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(basically: it must have a compile-time size) }
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function is_valid_univ_para_type(def: tdef): boolean;
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implementation
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uses
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systems,verbose;
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{ returns true, if def uses FPU }
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function is_fpu(def : tdef) : boolean;
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begin
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is_fpu:=(def.typ=floatdef);
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end;
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{ returns true, if def is a currency type }
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function is_currency(def : tdef) : boolean;
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begin
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case s64currencytype.typ of
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orddef :
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result:=(def.typ=orddef) and
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(torddef(s64currencytype).ordtype=torddef(def).ordtype);
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floatdef :
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result:=(def.typ=floatdef) and
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(tfloatdef(s64currencytype).floattype=tfloatdef(def).floattype);
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else
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internalerror(200304222);
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end;
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end;
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{ returns true, if def is a single type }
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function is_single(def : tdef) : boolean;
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begin
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result:=(def.typ=floatdef) and
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(tfloatdef(def).floattype=s32real);
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end;
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{ returns true, if def is a double type }
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function is_double(def : tdef) : boolean;
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begin
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result:=(def.typ=floatdef) and
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(tfloatdef(def).floattype=s64real);
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end;
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function is_extended(def : tdef) : boolean;
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begin
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result:=(def.typ=floatdef) and
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(tfloatdef(def).floattype in [s80real,sc80real]);
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end;
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{ returns true, if definition is a "real" real (i.e. single/double/extended) }
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function is_real(def : tdef) : boolean;
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begin
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result:=(def.typ=floatdef) and
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(tfloatdef(def).floattype in [s32real,s64real,s80real]);
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end;
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function range_to_basetype(l,h:TConstExprInt):tordtype;
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begin
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{ prefer signed over unsigned }
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if (l>=int64(-128)) and (h<=127) then
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range_to_basetype:=s8bit
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else if (l>=0) and (h<=255) then
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range_to_basetype:=u8bit
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else if (l>=int64(-32768)) and (h<=32767) then
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range_to_basetype:=s16bit
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else if (l>=0) and (h<=65535) then
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range_to_basetype:=u16bit
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else if (l>=int64(low(longint))) and (h<=high(longint)) then
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range_to_basetype:=s32bit
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else if (l>=low(cardinal)) and (h<=high(cardinal)) then
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range_to_basetype:=u32bit
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else
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range_to_basetype:=s64bit;
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end;
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procedure range_to_type(l,h:TConstExprInt;var def:tdef);
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begin
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{ prefer signed over unsigned }
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if (l>=int64(-128)) and (h<=127) then
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def:=s8inttype
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else if (l>=0) and (h<=255) then
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def:=u8inttype
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else if (l>=int64(-32768)) and (h<=32767) then
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def:=s16inttype
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else if (l>=0) and (h<=65535) then
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def:=u16inttype
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else if (l>=int64(low(longint))) and (h<=high(longint)) then
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def:=s32inttype
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else if (l>=low(cardinal)) and (h<=high(cardinal)) then
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def:=u32inttype
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else if (l>=low(int64)) and (h<=high(int64)) then
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def:=s64inttype
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else
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def:=u64inttype;
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end;
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procedure int_to_type(v:TConstExprInt;var def:tdef);
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begin
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range_to_type(v,v,def);
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end;
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{ true if p is an ordinal }
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function is_ordinal(def : tdef) : boolean;
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var
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dt : tordtype;
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begin
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case def.typ of
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orddef :
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begin
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dt:=torddef(def).ordtype;
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is_ordinal:=dt in [uchar,uwidechar,
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u8bit,u16bit,u32bit,u64bit,
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s8bit,s16bit,s32bit,s64bit,
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pasbool,bool8bit,bool16bit,bool32bit,bool64bit];
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end;
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enumdef :
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is_ordinal:=true;
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else
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is_ordinal:=false;
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end;
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end;
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{ true if p is a string }
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function is_string(def : tdef) : boolean;
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begin
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is_string := (assigned(def) and (def.typ = stringdef));
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end;
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{ returns the min. value of the type }
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function get_min_value(def : tdef) : TConstExprInt;
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begin
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case def.typ of
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orddef:
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result:=torddef(def).low;
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enumdef:
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result:=int64(tenumdef(def).min);
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else
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result:=0;
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end;
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end;
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{ returns the max. value of the type }
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function get_max_value(def : tdef) : TConstExprInt;
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begin
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case def.typ of
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orddef:
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result:=torddef(def).high;
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enumdef:
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result:=tenumdef(def).max;
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else
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result:=0;
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end;
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end;
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{ true if p is an integer }
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function is_integer(def : tdef) : boolean;
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begin
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result:=(def.typ=orddef) and
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(torddef(def).ordtype in [u8bit,u16bit,u32bit,u64bit,
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s8bit,s16bit,s32bit,s64bit]);
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end;
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{ true if p is a boolean }
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function is_boolean(def : tdef) : boolean;
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begin
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result:=(def.typ=orddef) and
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(torddef(def).ordtype in [pasbool,bool8bit,bool16bit,bool32bit,bool64bit]);
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end;
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function is_pasbool(def : tdef) : boolean;
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begin
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result:=(def.typ=orddef) and
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(torddef(def).ordtype = pasbool);
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end;
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{ true if def is a C-style boolean (non-zero value = true, zero = false) }
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function is_cbool(def : tdef) : boolean;
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begin
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result:=(def.typ=orddef) and
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(torddef(def).ordtype in [bool8bit,bool16bit,bool32bit,bool64bit]);
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end;
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{ true if p is a void }
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function is_void(def : tdef) : boolean;
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begin
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result:=(def.typ=orddef) and
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(torddef(def).ordtype=uvoid);
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end;
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{ true if p is a char }
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function is_char(def : tdef) : boolean;
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begin
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result:=(def.typ=orddef) and
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(torddef(def).ordtype=uchar);
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end;
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{ true if p is a wchar }
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function is_widechar(def : tdef) : boolean;
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begin
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result:=(def.typ=orddef) and
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(torddef(def).ordtype=uwidechar);
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end;
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{ true if p is a char or wchar }
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function is_anychar(def : tdef) : boolean;
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begin
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result:=(def.typ=orddef) and
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(torddef(def).ordtype in [uchar,uwidechar])
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end;
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{ true if p is signed (integer) }
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function is_signed(def : tdef) : boolean;
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begin
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case def.typ of
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orddef :
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result:=torddef(def).low < 0;
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enumdef :
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result:=tenumdef(def).min < 0;
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arraydef :
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result:=is_signed(tarraydef(def).rangedef);
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else
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result:=false;
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end;
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end;
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function is_in_limit(def_from,def_to : tdef) : boolean;
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begin
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if (def_from.typ<>def_to.typ) or
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not(def_from.typ in [orddef,enumdef,setdef]) then
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begin
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is_in_limit := false;
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exit;
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end;
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case def_from.typ of
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orddef:
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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);
|
|
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: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) 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;
|
|
{$endif SUPPORT_MMX}
|
|
end;
|
|
|
|
|
|
function def_cgsize(def: tdef): tcgsize;
|
|
begin
|
|
case def.typ of
|
|
orddef,
|
|
enumdef,
|
|
setdef:
|
|
begin
|
|
result:=int_cgsize(def.size);
|
|
if is_signed(def) then
|
|
result:=tcgsize(ord(result)+(ord(OS_S8)-ord(OS_8)));
|
|
end;
|
|
classrefdef,
|
|
pointerdef:
|
|
result := OS_ADDR;
|
|
procvardef:
|
|
begin
|
|
if tprocvardef(def).is_methodpointer and
|
|
(not tprocvardef(def).is_addressonly) then
|
|
{$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_widestring(def) then
|
|
result := OS_ADDR
|
|
else
|
|
result:=int_cgsize(def.size);
|
|
end;
|
|
objectdef :
|
|
begin
|
|
if is_class_or_interface_or_dispinterface_or_objc(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;
|
|
|
|
|
|
function is_automatable(p : tdef) : boolean;
|
|
begin
|
|
result:=false;
|
|
case p.typ of
|
|
orddef:
|
|
result:=torddef(p).ordtype in [u8bit,s32bit,s16bit,bool16bit];
|
|
floatdef:
|
|
result:=tfloatdef(p).floattype in [s64currency,s64real,s32real];
|
|
stringdef:
|
|
result:=tstringdef(p).stringtype in [st_ansistring,st_widestring];
|
|
variantdef:
|
|
result:=true;
|
|
arraydef:
|
|
result:=(ado_IsConstString in tarraydef(p).arrayoptions);
|
|
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;
|
|
|
|
end.
|