procvar in the local state of the block, and then call it insde the
generated invoke routine. We can't call it directly there, because
due to visibility reasons it may not be accessible from a regular
procedure (e.g. if it is a strict private method)
git-svn-id: branches/blocks@28234 -
o blocks are implemented as a variation of procedure variables
o declaration of a block variable: "test: procedure(c: char) is block;"
(C equivalent: (void)(^test)(char c) )
o the compiler automatically converts procedures/functions whose address
is passed to a block parameter or assigned to a block variable into
a "block". This consists of
1) generating a block descriptor (containing the size of the "block
literal" (see below) and the signature of the invocation function
encoded as an Objective-C selector)
2) generating a wrapper function around the original funcion (with C
calling convention), that has an extra first hidden parameter
(marked as vo_is_parentfp in the compiler) whose type is a pointer
to the describing "block literal"
3) generating the "block literal", which contains a pointer to an
external variable indicating whether this block captures context or
not, some flags (see compiler/blockutl.get_block_literal_flags for
info), a pointer to the wrapper function and a pointer to the
descriptor. In the future, it will also contain captured variables.
o right now, only global procedures/functions can be converted to blocks
(because they don't require state capturing). The next steps are (Object
Pascal) methods (not Objective-C methods, because Objective-C method
procvars don't exist) and finally nested functions
o on Mac OS X, the functionality will only work on Mac OS X 10.7 and later,
because we have to use the so-called "ABI.2010.3.16" to ensure that
our blocks aren't called as variadic functions by the runtime (which
came out after the Mac OS X 10.6 release)
o while the currently implemented functionality does not require any
library support at all, there's no use enabling it on other platforms
because unless it has been confirmed to work with a blocks runtime,
there's no point in using blocks (they're just somewhat bulky procvars
right now). Enabling it on other platforms (in combination with the
GNUStep Objective-C run time), should simply be a matter of adding
the right {$linklib xxx} statement to rtl/inc/blockrtl.pp file, adding
that file to Makefile.fpc for that platform and adding that platform
to the compiler/systems.systems_blocks_supported set
git-svn-id: branches/blocks@28232 -
o made all (non-abstract) tdef and tsym constructors virtual
o added c*def/c*sym classref types for every (non-abstract) t*def/t*sym
class
o added cpusym unit for every architecture that derives a tcpu*def/tcpu*sym
class from the base classes, and initialises the c*def/c*sym classes with
them. This is done so that the llvm target will be able to derive from
the tcpu*def/sym classes without umpteen ifdefs, and it also means that
the WPO can devirtualise everything because the c* variables are only
initialised with one class type
o replaced all t*def/t*sym constructor calls with c*def/c*sym constructor
calls
git-svn-id: trunk@27361 -
defcmp.pas:
+ add new function "def_is_related" which combines the "is_related" overloads of "tobjectdef", "trecorddef" and "tstringdef" (it returns "false" for other def types which is what "tdef.is_related" did)
* compare_defs_ext & compatible_childmethod_resultdef: change call from "x.is_related" to "def_is_related(x,...)"
symtype.pas, tdef:
- remove "is_related" method
symdef.pas:
- remove "is_related" in "tobjectdef", "trecorddef" and "tstringdef"
* tobjectdef.needs_inittable: for checking whether a Corba interface somehow inherits from a IInterface don't use "is_related" anymore (we want to avoid the dependency after all), but mimic the necessary functionality of "def_is_related"
htypechk.pas, nadd.pas, ncal.pas, ncnv.pas, ngtcon.pas, nld.pas, optvirt.pas, pdecobj.pas, pdecvar.pas, pexpr.pas, pgenutil.pas:
* change call from "x.is_related" to "def_is_related(x,...)"
symtable.pas
+ use unit defcmp
* change call from "x.is_related" to "def_is_related(x,...)"
jvm/njvmcnv.pas, jvm/njvmflw.pas:
* change call from "x.is_related" to "def_is_related(x,...)"
git-svn-id: trunk@25847 -
defcmp.pas:
+ add function "find_implemented_interface"
* change method call of "find_implemented_interface" into function call
symdef.pas:
- tobjectdef: remove method "find_implemented_interface"
- remove use of unit "defcmp"
pgenutil.pas:
* change method call of "find_implemented_interface" into function call
+ add use of unit "defcmp"
ncgcnv.pas, ncnv.pas, pdecobj.pas, pdecsub.pas, pdecvar.pas:
* change method call of "find_implemented_interface" into function call
git-svn-id: trunk@25844 -
* Provide x86_64 SSE versions of fpc_trunc_real and fpc_round_real, strictly they are not necessary after the above change to code generation, but it still reduces size of system unit by avoiding compilation of related generic code.
git-svn-id: trunk@25735 -
because the compiler cannot convert arbitrary unicodechar constants at
compile time to a shortstring (since it doesn't know the code page to use)
(test part of next commit)
git-svn-id: branches/cpstrrtl@25429 -
the other fpc_(u)char_to_*str() routines (exception dates back to the
time calls to these routines were still inserted "manually" in the
compiler). Fixes the compilation of "shortstr:=widecharconstant" after
r23613 and simplifies other code calling this helper + test
git-svn-id: branches/cpstrrtl@25428 -
type with a non-default code page
TODO: ensure that string constants typecasted to ansistring become
ansistrings rather than typeless string constants
git-svn-id: trunk@25207 -
since they require function calls and it's not possible to call functions
inside constant blocks (and because current_procinfo is not necessarily
valid when a constant block is parsed, this moreover crashes the compiler)
git-svn-id: trunk@22018 -
simplified via typeconvnode (corrects resultdef of "qword(1) shl 33",
mantis #22133)
* simplify shl/shr nodes after their resultdef has been set, so the
resultdef used during simplify is set (fixes same expression as above
when it is calculated by an inline function)
git-svn-id: trunk@21394 -
new ShortString->(Some)String precedence: ShortString, UTF8String, AnsiString, AnsiString(CodePage) and RawByteString, UnicodeString, WideString and other string types
new AnsiString->(Some)String precedence: RawByteString, UTF8String, AnsiString, AnsiString(CodePage), UnicodeString, WideString, ShortString and other string types
The new logic makes UTF8String more preferrable than other AnsiString types, AnsiString more preferrable than other AnsiStrings(codepage) and also makes UnicodeString more preferrable than WideString.
git-svn-id: trunk@21057 -
o support for the new codepage-aware ansistrings in the jvm branch
o empty ansistrings are now always represented by a nil pointer rather than
by an empty string, because an empty string also has a code page which
can confuse code (although this will make ansistrings harder to use
in Java code)
o more string helpers code shared between the general and jvm rtl
o support for indexbyte/word in the jvm rtl (warning: first parameter
is an open array rather than an untyped parameter there, so
indexchar(pcharvar^,10,0) will be equivalent to
indexchar[pcharvar^],10,0) there, which is different from what is
intended; changing it to an untyped parameter wouldn't help though)
o default() support is not yet complete
o calling fpcres is currently broken due to limitations in
sysutils.executeprocess() regarding handling unix quoting and
the compiler using the same command lines for scripts and directly
calling external programs
o compiling the Java compiler currently requires adding ALLOW_WARNINGS=1
to the make command line
git-svn-id: branches/jvmbackend@20887 -
- warn if compiler finds implicit or explicit string type conversion from a form of ansi string to a form of unicode string and vice versa
- mark explicit warnings as OFF by default
- warn if compiler finds an assignment of an unicode char const to ansi string or char type (warn for assignment of unicode string const to be implemented)
- revert a piece of code from r19457 regards shortstring handling because shortstring handling should not differ from ansistring in this paticular case
git-svn-id: trunk@19574 -
