The listing is alphabetical, case insensitive.
+
+=head1 "Gimme" Values
+
+=over 8
+
+=item GIMME
+
+A backward-compatible version of C<GIMME_V> which can only return
+C<G_SCALAR> or C<G_ARRAY>; in a void context, it returns C<G_SCALAR>.
+Deprecated. Use C<GIMME_V> instead.
+
+ U32 GIMME
+
+=for hackers
+Found in file op.h
+
+=item GIMME_V
+
+The XSUB-writer's equivalent to Perl's C<wantarray>. Returns C<G_VOID>,
+C<G_SCALAR> or C<G_ARRAY> for void, scalar or list context,
+respectively.
+
+ U32 GIMME_V
+
+=for hackers
+Found in file op.h
+
+=item G_ARRAY
+
+Used to indicate list context. See C<GIMME_V>, C<GIMME> and
+L<perlcall>.
+
+=for hackers
+Found in file cop.h
+
+=item G_DISCARD
+
+Indicates that arguments returned from a callback should be discarded. See
+L<perlcall>.
+
+=for hackers
+Found in file cop.h
+
+=item G_EVAL
+
+Used to force a Perl C<eval> wrapper around a callback. See
+L<perlcall>.
+
+=for hackers
+Found in file cop.h
+
+=item G_NOARGS
+
+Indicates that no arguments are being sent to a callback. See
+L<perlcall>.
+
+=for hackers
+Found in file cop.h
+
+=item G_SCALAR
+
+Used to indicate scalar context. See C<GIMME_V>, C<GIMME>, and
+L<perlcall>.
+
+=for hackers
+Found in file cop.h
+
+=item G_VOID
+
+Used to indicate void context. See C<GIMME_V> and L<perlcall>.
+
+=for hackers
+Found in file cop.h
+
+
+=back
+
+=head1 Array Manipulation Functions
+
=over 8
=item AvFILL
=for hackers
Found in file av.c
-=item bytes_from_utf8
+=item get_av
-Converts a string C<s> of length C<len> from UTF8 into byte encoding.
-Unlike <utf8_to_bytes> but like C<bytes_to_utf8>, returns a pointer to
-the newly-created string, and updates C<len> to contain the new length.
-Returns the original string if no conversion occurs, C<len> and
-C<is_utf8> are unchanged. Do nothing if C<is_utf8> points to 0. Sets
-C<is_utf8> to 0 if C<s> is converted or malformed .
+Returns the AV of the specified Perl array. If C<create> is set and the
+Perl variable does not exist then it will be created. If C<create> is not
+set and the variable does not exist then NULL is returned.
-NOTE: this function is experimental and may change or be
-removed without notice.
+NOTE: the perl_ form of this function is deprecated.
- U8* bytes_from_utf8(U8 *s, STRLEN *len, bool *is_utf8)
+ AV* get_av(const char* name, I32 create)
=for hackers
-Found in file utf8.c
+Found in file perl.c
-=item bytes_to_utf8
+=item newAV
-Converts a string C<s> of length C<len> from ASCII into UTF8 encoding.
-Returns a pointer to the newly-created string, and sets C<len> to
-reflect the new length.
+Creates a new AV. The reference count is set to 1.
-NOTE: this function is experimental and may change or be
-removed without notice.
+ AV* newAV()
+
+=for hackers
+Found in file av.c
+
+=item Nullav
+
+Null AV pointer.
- U8* bytes_to_utf8(U8 *s, STRLEN *len)
=for hackers
-Found in file utf8.c
+Found in file av.h
+
+=item sortsv
+
+Sort an array. Here is an example:
+
+ sortsv(AvARRAY(av), av_len(av)+1, Perl_sv_cmp_locale);
+
+ void sortsv(SV ** array, size_t num_elts, SVCOMPARE_t cmp)
+
+=for hackers
+Found in file pp_sort.c
+
+
+=back
+
+=head1 Callback Functions
+
+=over 8
=item call_argv
=for hackers
Found in file perl.c
-=item CLASS
+=item ENTER
-Variable which is setup by C<xsubpp> to indicate the
-class name for a C++ XS constructor. This is always a C<char*>. See C<THIS>.
+Opening bracket on a callback. See C<LEAVE> and L<perlcall>.
- char* CLASS
+ ENTER;
=for hackers
-Found in file XSUB.h
+Found in file scope.h
-=item Copy
+=item eval_pv
-The XSUB-writer's interface to the C C<memcpy> function. The C<src> is the
-source, C<dest> is the destination, C<nitems> is the number of items, and C<type> is
-the type. May fail on overlapping copies. See also C<Move>.
+Tells Perl to C<eval> the given string and return an SV* result.
- void Copy(void* src, void* dest, int nitems, type)
+NOTE: the perl_ form of this function is deprecated.
-=for hackers
-Found in file handy.h
+ SV* eval_pv(const char* p, I32 croak_on_error)
-=item croak
+=for hackers
+Found in file perl.c
-This is the XSUB-writer's interface to Perl's C<die> function.
-Normally use this function the same way you use the C C<printf>
-function. See C<warn>.
+=item eval_sv
-If you want to throw an exception object, assign the object to
-C<$@> and then pass C<Nullch> to croak():
+Tells Perl to C<eval> the string in the SV.
- errsv = get_sv("@", TRUE);
- sv_setsv(errsv, exception_object);
- croak(Nullch);
+NOTE: the perl_ form of this function is deprecated.
- void croak(const char* pat, ...)
+ I32 eval_sv(SV* sv, I32 flags)
=for hackers
-Found in file util.c
+Found in file perl.c
-=item CvSTASH
+=item FREETMPS
-Returns the stash of the CV.
+Closing bracket for temporaries on a callback. See C<SAVETMPS> and
+L<perlcall>.
- HV* CvSTASH(CV* cv)
+ FREETMPS;
=for hackers
-Found in file cv.h
-
-=item cv_const_sv
+Found in file scope.h
-If C<cv> is a constant sub eligible for inlining. returns the constant
-value returned by the sub. Otherwise, returns NULL.
+=item LEAVE
-Constant subs can be created with C<newCONSTSUB> or as described in
-L<perlsub/"Constant Functions">.
+Closing bracket on a callback. See C<ENTER> and L<perlcall>.
- SV* cv_const_sv(CV* cv)
+ LEAVE;
=for hackers
-Found in file op.c
+Found in file scope.h
-=item dMARK
+=item SAVETMPS
-Declare a stack marker variable, C<mark>, for the XSUB. See C<MARK> and
-C<dORIGMARK>.
+Opening bracket for temporaries on a callback. See C<FREETMPS> and
+L<perlcall>.
- dMARK;
+ SAVETMPS;
=for hackers
-Found in file pp.h
+Found in file scope.h
-=item dORIGMARK
-Saves the original stack mark for the XSUB. See C<ORIGMARK>.
+=back
- dORIGMARK;
+=head1 Character classes
-=for hackers
-Found in file pp.h
+=over 8
-=item dSP
+=item isALNUM
-Declares a local copy of perl's stack pointer for the XSUB, available via
-the C<SP> macro. See C<SP>.
+Returns a boolean indicating whether the C C<char> is an ASCII alphanumeric
+character (including underscore) or digit.
- dSP;
+ bool isALNUM(char ch)
=for hackers
-Found in file pp.h
+Found in file handy.h
-=item dXSARGS
+=item isALPHA
-Sets up stack and mark pointers for an XSUB, calling dSP and dMARK. This
-is usually handled automatically by C<xsubpp>. Declares the C<items>
-variable to indicate the number of items on the stack.
+Returns a boolean indicating whether the C C<char> is an ASCII alphabetic
+character.
- dXSARGS;
+ bool isALPHA(char ch)
=for hackers
-Found in file XSUB.h
+Found in file handy.h
-=item dXSI32
+=item isDIGIT
-Sets up the C<ix> variable for an XSUB which has aliases. This is usually
-handled automatically by C<xsubpp>.
+Returns a boolean indicating whether the C C<char> is an ASCII
+digit.
- dXSI32;
+ bool isDIGIT(char ch)
=for hackers
-Found in file XSUB.h
+Found in file handy.h
-=item ENTER
+=item isLOWER
-Opening bracket on a callback. See C<LEAVE> and L<perlcall>.
+Returns a boolean indicating whether the C C<char> is a lowercase
+character.
- ENTER;
+ bool isLOWER(char ch)
=for hackers
-Found in file scope.h
-
-=item eval_pv
+Found in file handy.h
-Tells Perl to C<eval> the given string and return an SV* result.
+=item isSPACE
-NOTE: the perl_ form of this function is deprecated.
+Returns a boolean indicating whether the C C<char> is whitespace.
- SV* eval_pv(const char* p, I32 croak_on_error)
+ bool isSPACE(char ch)
=for hackers
-Found in file perl.c
-
-=item eval_sv
+Found in file handy.h
-Tells Perl to C<eval> the string in the SV.
+=item isUPPER
-NOTE: the perl_ form of this function is deprecated.
+Returns a boolean indicating whether the C C<char> is an uppercase
+character.
- I32 eval_sv(SV* sv, I32 flags)
+ bool isUPPER(char ch)
=for hackers
-Found in file perl.c
+Found in file handy.h
-=item EXTEND
+=item toLOWER
-Used to extend the argument stack for an XSUB's return values. Once
-used, guarantees that there is room for at least C<nitems> to be pushed
-onto the stack.
+Converts the specified character to lowercase.
- void EXTEND(SP, int nitems)
+ char toLOWER(char ch)
=for hackers
-Found in file pp.h
+Found in file handy.h
-=item fbm_compile
+=item toUPPER
-Analyses the string in order to make fast searches on it using fbm_instr()
--- the Boyer-Moore algorithm.
+Converts the specified character to uppercase.
- void fbm_compile(SV* sv, U32 flags)
+ char toUPPER(char ch)
=for hackers
-Found in file util.c
+Found in file handy.h
-=item fbm_instr
-Returns the location of the SV in the string delimited by C<str> and
-C<strend>. It returns C<Nullch> if the string can't be found. The C<sv>
-does not have to be fbm_compiled, but the search will not be as fast
-then.
+=back
- char* fbm_instr(unsigned char* big, unsigned char* bigend, SV* littlesv, U32 flags)
+=head1 Cloning an interpreter
-=for hackers
-Found in file util.c
+=over 8
-=item FREETMPS
+=item perl_clone
-Closing bracket for temporaries on a callback. See C<SAVETMPS> and
-L<perlcall>.
+Create and return a new interpreter by cloning the current one.
- FREETMPS;
+ PerlInterpreter* perl_clone(PerlInterpreter* interp, UV flags)
=for hackers
-Found in file scope.h
+Found in file sv.c
-=item get_av
-Returns the AV of the specified Perl array. If C<create> is set and the
-Perl variable does not exist then it will be created. If C<create> is not
-set and the variable does not exist then NULL is returned.
+=back
-NOTE: the perl_ form of this function is deprecated.
+=head1 CV Manipulation Functions
- AV* get_av(const char* name, I32 create)
+=over 8
+
+=item CvSTASH
+
+Returns the stash of the CV.
+
+ HV* CvSTASH(CV* cv)
=for hackers
-Found in file perl.c
+Found in file cv.h
=item get_cv
=for hackers
Found in file perl.c
-=item get_hv
+=item Nullcv
-Returns the HV of the specified Perl hash. If C<create> is set and the
-Perl variable does not exist then it will be created. If C<create> is not
-set and the variable does not exist then NULL is returned.
+Null CV pointer.
-NOTE: the perl_ form of this function is deprecated.
- HV* get_hv(const char* name, I32 create)
+=for hackers
+Found in file cv.h
+
+
+=back
+
+=head1 Embedding Functions
+
+=over 8
+
+=item load_module
+
+Loads the module whose name is pointed to by the string part of name.
+Note that the actual module name, not its filename, should be given.
+Eg, "Foo::Bar" instead of "Foo/Bar.pm". flags can be any of
+PERL_LOADMOD_DENY, PERL_LOADMOD_NOIMPORT, or PERL_LOADMOD_IMPORT_OPS
+(or 0 for no flags). ver, if specified, provides version semantics
+similar to C<use Foo::Bar VERSION>. The optional trailing SV*
+arguments can be used to specify arguments to the module's import()
+method, similar to C<use Foo::Bar VERSION LIST>.
+
+ void load_module(U32 flags, SV* name, SV* ver, ...)
+
+=for hackers
+Found in file op.c
+
+=item nothreadhook
+
+Stub that provides thread hook for perl_destruct when there are
+no threads.
+
+ int nothreadhook()
=for hackers
Found in file perl.c
-=item get_sv
+=item perl_alloc
-Returns the SV of the specified Perl scalar. If C<create> is set and the
-Perl variable does not exist then it will be created. If C<create> is not
-set and the variable does not exist then NULL is returned.
+Allocates a new Perl interpreter. See L<perlembed>.
+
+ PerlInterpreter* perl_alloc()
+
+=for hackers
+Found in file perl.c
+
+=item perl_construct
+
+Initializes a new Perl interpreter. See L<perlembed>.
+
+ void perl_construct(PerlInterpreter* interp)
+
+=for hackers
+Found in file perl.c
+
+=item perl_destruct
+
+Shuts down a Perl interpreter. See L<perlembed>.
+
+ int perl_destruct(PerlInterpreter* interp)
+
+=for hackers
+Found in file perl.c
+
+=item perl_free
+
+Releases a Perl interpreter. See L<perlembed>.
+
+ void perl_free(PerlInterpreter* interp)
+
+=for hackers
+Found in file perl.c
+
+=item perl_parse
+
+Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
+
+ int perl_parse(PerlInterpreter* interp, XSINIT_t xsinit, int argc, char** argv, char** env)
+
+=for hackers
+Found in file perl.c
+
+=item perl_run
+
+Tells a Perl interpreter to run. See L<perlembed>.
+
+ int perl_run(PerlInterpreter* interp)
+
+=for hackers
+Found in file perl.c
+
+=item require_pv
+
+Tells Perl to C<require> the file named by the string argument. It is
+analogous to the Perl code C<eval "require '$file'">. It's even
+implemented that way; consider using Perl_load_module instead.
NOTE: the perl_ form of this function is deprecated.
- SV* get_sv(const char* name, I32 create)
+ void require_pv(const char* pv)
=for hackers
Found in file perl.c
-=item GIMME
-A backward-compatible version of C<GIMME_V> which can only return
-C<G_SCALAR> or C<G_ARRAY>; in a void context, it returns C<G_SCALAR>.
-Deprecated. Use C<GIMME_V> instead.
+=back
- U32 GIMME
+=head1 Functions in file pp_pack.c
+
+
+=over 8
+
+=item pack_cat
+
+The engine implementing pack() Perl function.
+
+ void pack_cat(SV *cat, char *pat, char *patend, SV **beglist, SV **endlist, SV ***next_in_list, U32 flags)
=for hackers
-Found in file op.h
+Found in file pp_pack.c
-=item GIMME_V
+=item unpack_str
-The XSUB-writer's equivalent to Perl's C<wantarray>. Returns C<G_VOID>,
-C<G_SCALAR> or C<G_ARRAY> for void, scalar or list context,
-respectively.
+The engine implementing unpack() Perl function.
- U32 GIMME_V
+ I32 unpack_str(char *pat, char *patend, char *s, char *strbeg, char *strend, char **new_s, I32 ocnt, U32 flags)
=for hackers
-Found in file op.h
+Found in file pp_pack.c
+
+
+=back
+
+=head1 Global Variables
+
+=over 8
+
+=item PL_modglobal
+
+C<PL_modglobal> is a general purpose, interpreter global HV for use by
+extensions that need to keep information on a per-interpreter basis.
+In a pinch, it can also be used as a symbol table for extensions
+to share data among each other. It is a good idea to use keys
+prefixed by the package name of the extension that owns the data.
+
+ HV* PL_modglobal
+
+=for hackers
+Found in file intrpvar.h
+
+=item PL_na
+
+A convenience variable which is typically used with C<SvPV> when one
+doesn't care about the length of the string. It is usually more efficient
+to either declare a local variable and use that instead or to use the
+C<SvPV_nolen> macro.
+
+ STRLEN PL_na
+
+=for hackers
+Found in file thrdvar.h
+
+=item PL_sv_no
+
+This is the C<false> SV. See C<PL_sv_yes>. Always refer to this as
+C<&PL_sv_no>.
+
+ SV PL_sv_no
+
+=for hackers
+Found in file intrpvar.h
+
+=item PL_sv_undef
+
+This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>.
+
+ SV PL_sv_undef
+
+=for hackers
+Found in file intrpvar.h
+
+=item PL_sv_yes
+
+This is the C<true> SV. See C<PL_sv_no>. Always refer to this as
+C<&PL_sv_yes>.
+
+ SV PL_sv_yes
+
+=for hackers
+Found in file intrpvar.h
+
+
+=back
+
+=head1 GV Functions
+
+=over 8
=item GvSV
Returns the glob with the given C<name> and a defined subroutine or
C<NULL>. The glob lives in the given C<stash>, or in the stashes
-accessible via @ISA and @UNIVERSAL.
+accessible via @ISA and UNIVERSAL::.
The argument C<level> should be either 0 or -1. If C<level==0>, as a
side-effect creates a glob with the given C<name> in the given C<stash>
=for hackers
Found in file gv.c
+=item gv_fetchmeth_autoload
+
+Same as gv_fetchmeth(), but looks for autoloaded subroutines too.
+Returns a glob for the subroutine.
+
+For an autoloaded subroutine without a GV, will create a GV even
+if C<level < 0>. For an autoloaded subroutine without a stub, GvCV()
+of the result may be zero.
+
+ GV* gv_fetchmeth_autoload(HV* stash, const char* name, STRLEN len, I32 level)
+
+=for hackers
+Found in file gv.c
+
=item gv_stashpv
Returns a pointer to the stash for a specified package. C<name> should
=for hackers
Found in file gv.c
-=item G_ARRAY
-
-Used to indicate list context. See C<GIMME_V>, C<GIMME> and
-L<perlcall>.
-=for hackers
-Found in file cop.h
+=back
-=item G_DISCARD
+=head1 Handy Values
-Indicates that arguments returned from a callback should be discarded. See
-L<perlcall>.
+=over 8
-=for hackers
-Found in file cop.h
+=item HEf_SVKEY
-=item G_EVAL
+This flag, used in the length slot of hash entries and magic structures,
+specifies the structure contains an C<SV*> pointer where a C<char*> pointer
+is to be expected. (For information only--not to be used).
-Used to force a Perl C<eval> wrapper around a callback. See
-L<perlcall>.
=for hackers
-Found in file cop.h
-
-=item G_NOARGS
+Found in file hv.h
-Indicates that no arguments are being sent to a callback. See
-L<perlcall>.
+=item Nullch
+Null character pointer.
=for hackers
-Found in file cop.h
+Found in file handy.h
-=item G_SCALAR
+=item Nullsv
-Used to indicate scalar context. See C<GIMME_V>, C<GIMME>, and
-L<perlcall>.
+Null SV pointer.
=for hackers
-Found in file cop.h
+Found in file handy.h
-=item G_VOID
-Used to indicate void context. See C<GIMME_V> and L<perlcall>.
+=back
-=for hackers
-Found in file cop.h
+=head1 Hash Manipulation Functions
-=item HEf_SVKEY
+=over 8
-This flag, used in the length slot of hash entries and magic structures,
-specifies the structure contains a C<SV*> pointer where a C<char*> pointer
-is to be expected. (For information only--not to be used).
+=item get_hv
+
+Returns the HV of the specified Perl hash. If C<create> is set and the
+Perl variable does not exist then it will be created. If C<create> is not
+set and the variable does not exist then NULL is returned.
+
+NOTE: the perl_ form of this function is deprecated.
+
+ HV* get_hv(const char* name, I32 create)
=for hackers
-Found in file hv.h
+Found in file perl.c
=item HeHASH
Returns the SV which corresponds to the specified key in the hash. The
C<klen> is the length of the key. If C<lval> is set then the fetch will be
part of a store. Check that the return value is non-null before
-dereferencing it to a C<SV*>.
+dereferencing it to an C<SV*>.
See L<perlguts/"Understanding the Magic of Tied Hashes and Arrays"> for more
information on how to use this function on tied hashes.
compute it. The return value is the new hash entry so created. It will be
NULL if the operation failed or if the value did not need to be actually
stored within the hash (as in the case of tied hashes). Otherwise the
-contents of the return value can be accessed using the C<He???> macros
+contents of the return value can be accessed using the C<He?> macros
described here. Note that the caller is responsible for suitably
incrementing the reference count of C<val> before the call, and
decrementing it if the function returned NULL.
=for hackers
Found in file hv.c
-=item isALNUM
+=item newHV
-Returns a boolean indicating whether the C C<char> is an ASCII alphanumeric
-character (including underscore) or digit.
+Creates a new HV. The reference count is set to 1.
- bool isALNUM(char ch)
+ HV* newHV()
=for hackers
-Found in file handy.h
+Found in file hv.c
-=item isALPHA
+=item Nullhv
-Returns a boolean indicating whether the C C<char> is an ASCII alphabetic
-character.
+Null HV pointer.
- bool isALPHA(char ch)
=for hackers
-Found in file handy.h
+Found in file hv.h
-=item isDIGIT
-Returns a boolean indicating whether the C C<char> is an ASCII
-digit.
+=back
- bool isDIGIT(char ch)
+=head1 Magical Functions
-=for hackers
-Found in file handy.h
+=over 8
-=item isLOWER
+=item mg_clear
-Returns a boolean indicating whether the C C<char> is a lowercase
-character.
+Clear something magical that the SV represents. See C<sv_magic>.
- bool isLOWER(char ch)
+ int mg_clear(SV* sv)
=for hackers
-Found in file handy.h
+Found in file mg.c
-=item isSPACE
+=item mg_copy
-Returns a boolean indicating whether the C C<char> is whitespace.
+Copies the magic from one SV to another. See C<sv_magic>.
- bool isSPACE(char ch)
+ int mg_copy(SV* sv, SV* nsv, const char* key, I32 klen)
=for hackers
-Found in file handy.h
+Found in file mg.c
-=item isUPPER
+=item mg_find
-Returns a boolean indicating whether the C C<char> is an uppercase
-character.
+Finds the magic pointer for type matching the SV. See C<sv_magic>.
- bool isUPPER(char ch)
+ MAGIC* mg_find(SV* sv, int type)
=for hackers
-Found in file handy.h
+Found in file mg.c
-=item is_utf8_char
+=item mg_free
-Tests if some arbitrary number of bytes begins in a valid UTF-8 character.
-The actual number of bytes in the UTF-8 character will be returned if it
-is valid, otherwise 0.
-
- STRLEN is_utf8_char(U8 *p)
+Free any magic storage used by the SV. See C<sv_magic>.
+
+ int mg_free(SV* sv)
=for hackers
-Found in file utf8.c
+Found in file mg.c
-=item is_utf8_string
+=item mg_get
-Returns true if first C<len> bytes of the given string form valid a UTF8
-string, false otherwise.
+Do magic after a value is retrieved from the SV. See C<sv_magic>.
- bool is_utf8_string(U8 *s, STRLEN len)
+ int mg_get(SV* sv)
=for hackers
-Found in file utf8.c
+Found in file mg.c
-=item items
+=item mg_length
-Variable which is setup by C<xsubpp> to indicate the number of
-items on the stack. See L<perlxs/"Variable-length Parameter Lists">.
+Report on the SV's length. See C<sv_magic>.
- I32 items
+ U32 mg_length(SV* sv)
=for hackers
-Found in file XSUB.h
+Found in file mg.c
-=item ix
+=item mg_magical
-Variable which is setup by C<xsubpp> to indicate which of an
-XSUB's aliases was used to invoke it. See L<perlxs/"The ALIAS: Keyword">.
+Turns on the magical status of an SV. See C<sv_magic>.
- I32 ix
+ void mg_magical(SV* sv)
=for hackers
-Found in file XSUB.h
+Found in file mg.c
-=item LEAVE
+=item mg_set
-Closing bracket on a callback. See C<ENTER> and L<perlcall>.
+Do magic after a value is assigned to the SV. See C<sv_magic>.
- LEAVE;
+ int mg_set(SV* sv)
=for hackers
-Found in file scope.h
+Found in file mg.c
-=item looks_like_number
+=item SvGETMAGIC
-Test if an the content of an SV looks like a number (or is a
-number). C<Inf> and C<Infinity> are treated as numbers (so will not
-issue a non-numeric warning), even if your atof() doesn't grok them.
+Invokes C<mg_get> on an SV if it has 'get' magic. This macro evaluates its
+argument more than once.
- I32 looks_like_number(SV* sv)
+ void SvGETMAGIC(SV* sv)
=for hackers
-Found in file sv.c
+Found in file sv.h
-=item MARK
+=item SvLOCK
-Stack marker variable for the XSUB. See C<dMARK>.
+Arranges for a mutual exclusion lock to be obtained on sv if a suitable module
+has been loaded.
+
+ void SvLOCK(SV* sv)
=for hackers
-Found in file pp.h
+Found in file sv.h
-=item mg_clear
+=item SvSETMAGIC
-Clear something magical that the SV represents. See C<sv_magic>.
+Invokes C<mg_set> on an SV if it has 'set' magic. This macro evaluates its
+argument more than once.
- int mg_clear(SV* sv)
+ void SvSETMAGIC(SV* sv)
=for hackers
-Found in file mg.c
+Found in file sv.h
-=item mg_copy
+=item SvSetMagicSV
-Copies the magic from one SV to another. See C<sv_magic>.
+Like C<SvSetSV>, but does any set magic required afterwards.
- int mg_copy(SV* sv, SV* nsv, const char* key, I32 klen)
+ void SvSetMagicSV(SV* dsb, SV* ssv)
=for hackers
-Found in file mg.c
+Found in file sv.h
-=item mg_find
+=item SvSetMagicSV_nosteal
-Finds the magic pointer for type matching the SV. See C<sv_magic>.
+Like C<SvSetMagicSV>, but does any set magic required afterwards.
- MAGIC* mg_find(SV* sv, int type)
+ void SvSetMagicSV_nosteal(SV* dsv, SV* ssv)
=for hackers
-Found in file mg.c
+Found in file sv.h
-=item mg_free
+=item SvSetSV
-Free any magic storage used by the SV. See C<sv_magic>.
+Calls C<sv_setsv> if dsv is not the same as ssv. May evaluate arguments
+more than once.
- int mg_free(SV* sv)
+ void SvSetSV(SV* dsb, SV* ssv)
=for hackers
-Found in file mg.c
+Found in file sv.h
-=item mg_get
+=item SvSetSV_nosteal
-Do magic after a value is retrieved from the SV. See C<sv_magic>.
+Calls a non-destructive version of C<sv_setsv> if dsv is not the same as
+ssv. May evaluate arguments more than once.
- int mg_get(SV* sv)
+ void SvSetSV_nosteal(SV* dsv, SV* ssv)
=for hackers
-Found in file mg.c
+Found in file sv.h
-=item mg_length
+=item SvSHARE
-Report on the SV's length. See C<sv_magic>.
+Arranges for sv to be shared between threads if a suitable module
+has been loaded.
- U32 mg_length(SV* sv)
+ void SvSHARE(SV* sv)
=for hackers
-Found in file mg.c
+Found in file sv.h
-=item mg_magical
-Turns on the magical status of an SV. See C<sv_magic>.
+=back
- void mg_magical(SV* sv)
+=head1 Memory Management
-=for hackers
-Found in file mg.c
+=over 8
-=item mg_set
+=item Copy
-Do magic after a value is assigned to the SV. See C<sv_magic>.
+The XSUB-writer's interface to the C C<memcpy> function. The C<src> is the
+source, C<dest> is the destination, C<nitems> is the number of items, and C<type> is
+the type. May fail on overlapping copies. See also C<Move>.
- int mg_set(SV* sv)
+ void Copy(void* src, void* dest, int nitems, type)
=for hackers
-Found in file mg.c
+Found in file handy.h
=item Move
=for hackers
Found in file handy.h
-=item newAV
-
-Creates a new AV. The reference count is set to 1.
-
- AV* newAV()
-
-=for hackers
-Found in file av.c
-
=item Newc
The XSUB-writer's interface to the C C<malloc> function, with
=for hackers
Found in file handy.h
-=item newCONSTSUB
+=item NEWSV
-Creates a constant sub equivalent to Perl C<sub FOO () { 123 }> which is
-eligible for inlining at compile-time.
+Creates a new SV. A non-zero C<len> parameter indicates the number of
+bytes of preallocated string space the SV should have. An extra byte for a
+tailing NUL is also reserved. (SvPOK is not set for the SV even if string
+space is allocated.) The reference count for the new SV is set to 1.
+C<id> is an integer id between 0 and 1299 (used to identify leaks).
- CV* newCONSTSUB(HV* stash, char* name, SV* sv)
+
+ SV* NEWSV(int id, STRLEN len)
=for hackers
-Found in file op.c
+Found in file handy.h
-=item newHV
+=item Newz
-Creates a new HV. The reference count is set to 1.
+The XSUB-writer's interface to the C C<malloc> function. The allocated
+memory is zeroed with C<memzero>.
- HV* newHV()
+ void Newz(int id, void* ptr, int nitems, type)
=for hackers
-Found in file hv.c
+Found in file handy.h
-=item newRV_inc
+=item Renew
-Creates an RV wrapper for an SV. The reference count for the original SV is
-incremented.
+The XSUB-writer's interface to the C C<realloc> function.
- SV* newRV_inc(SV* sv)
+ void Renew(void* ptr, int nitems, type)
=for hackers
-Found in file sv.h
+Found in file handy.h
-=item newRV_noinc
+=item Renewc
-Creates an RV wrapper for an SV. The reference count for the original
-SV is B<not> incremented.
+The XSUB-writer's interface to the C C<realloc> function, with
+cast.
- SV* newRV_noinc(SV *sv)
+ void Renewc(void* ptr, int nitems, type, cast)
=for hackers
-Found in file sv.c
+Found in file handy.h
-=item NEWSV
+=item Safefree
-Creates a new SV. A non-zero C<len> parameter indicates the number of
-bytes of preallocated string space the SV should have. An extra byte for a
-tailing NUL is also reserved. (SvPOK is not set for the SV even if string
-space is allocated.) The reference count for the new SV is set to 1.
-C<id> is an integer id between 0 and 1299 (used to identify leaks).
+The XSUB-writer's interface to the C C<free> function.
- SV* NEWSV(int id, STRLEN len)
+ void Safefree(void* ptr)
=for hackers
Found in file handy.h
-=item newSViv
+=item savepv
-Creates a new SV and copies an integer into it. The reference count for the
-SV is set to 1.
+Copy a string to a safe spot. This does not use an SV.
- SV* newSViv(IV i)
+ char* savepv(const char* sv)
=for hackers
-Found in file sv.c
+Found in file util.c
-=item newSVnv
+=item savepvn
-Creates a new SV and copies a floating point value into it.
-The reference count for the SV is set to 1.
+Copy a string to a safe spot. The C<len> indicates number of bytes to
+copy. If pointer is NULL allocate space for a string of size specified.
+This does not use an SV.
- SV* newSVnv(NV n)
+ char* savepvn(const char* sv, I32 len)
=for hackers
-Found in file sv.c
+Found in file util.c
-=item newSVpv
+=item savesharedpv
-Creates a new SV and copies a string into it. The reference count for the
-SV is set to 1. If C<len> is zero, Perl will compute the length using
-strlen(). For efficiency, consider using C<newSVpvn> instead.
+Copy a string to a safe spot in memory shared between threads.
+This does not use an SV.
- SV* newSVpv(const char* s, STRLEN len)
+ char* savesharedpv(const char* sv)
=for hackers
-Found in file sv.c
+Found in file util.c
-=item newSVpvf
+=item StructCopy
-Creates a new SV an initialize it with the string formatted like
-C<sprintf>.
+This is an architecture-independent macro to copy one structure to another.
- SV* newSVpvf(const char* pat, ...)
+ void StructCopy(type src, type dest, type)
=for hackers
-Found in file sv.c
+Found in file handy.h
-=item newSVpvn
+=item Zero
-Creates a new SV and copies a string into it. The reference count for the
-SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
-string. You are responsible for ensuring that the source string is at least
-C<len> bytes long.
+The XSUB-writer's interface to the C C<memzero> function. The C<dest> is the
+destination, C<nitems> is the number of items, and C<type> is the type.
- SV* newSVpvn(const char* s, STRLEN len)
+ void Zero(void* dest, int nitems, type)
=for hackers
-Found in file sv.c
+Found in file handy.h
-=item newSVpvn_share
-Creates a new SV and populates it with a string from
-the string table. Turns on READONLY and FAKE.
-The idea here is that as string table is used for shared hash
-keys these strings will have SvPVX == HeKEY and hash lookup
-will avoid string compare.
+=back
- SV* newSVpvn_share(const char* s, I32 len, U32 hash)
+=head1 Miscellaneous Functions
-=for hackers
-Found in file sv.c
+=over 8
-=item newSVrv
+=item fbm_compile
-Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
-it will be upgraded to one. If C<classname> is non-null then the new SV will
-be blessed in the specified package. The new SV is returned and its
-reference count is 1.
+Analyses the string in order to make fast searches on it using fbm_instr()
+-- the Boyer-Moore algorithm.
- SV* newSVrv(SV* rv, const char* classname)
+ void fbm_compile(SV* sv, U32 flags)
=for hackers
-Found in file sv.c
+Found in file util.c
-=item newSVsv
+=item fbm_instr
-Creates a new SV which is an exact duplicate of the original SV.
+Returns the location of the SV in the string delimited by C<str> and
+C<strend>. It returns C<Nullch> if the string can't be found. The C<sv>
+does not have to be fbm_compiled, but the search will not be as fast
+then.
- SV* newSVsv(SV* old)
+ char* fbm_instr(unsigned char* big, unsigned char* bigend, SV* littlesv, U32 flags)
=for hackers
-Found in file sv.c
+Found in file util.c
-=item newSVuv
+=item form
-Creates a new SV and copies an unsigned integer into it.
-The reference count for the SV is set to 1.
+Takes a sprintf-style format pattern and conventional
+(non-SV) arguments and returns the formatted string.
- SV* newSVuv(UV u)
+ (char *) Perl_form(pTHX_ const char* pat, ...)
-=for hackers
-Found in file sv.c
+can be used any place a string (char *) is required:
-=item newXS
+ char * s = Perl_form("%d.%d",major,minor);
-Used by C<xsubpp> to hook up XSUBs as Perl subs.
+Uses a single private buffer so if you want to format several strings you
+must explicitly copy the earlier strings away (and free the copies when you
+are done).
+
+ char* form(const char* pat, ...)
=for hackers
-Found in file op.c
+Found in file util.c
-=item newXSproto
+=item getcwd_sv
-Used by C<xsubpp> to hook up XSUBs as Perl subs. Adds Perl prototypes to
-the subs.
+Fill the sv with current working directory
+
+ int getcwd_sv(SV* sv)
=for hackers
-Found in file XSUB.h
+Found in file util.c
-=item Newz
+=item strEQ
-The XSUB-writer's interface to the C C<malloc> function. The allocated
-memory is zeroed with C<memzero>.
+Test two strings to see if they are equal. Returns true or false.
- void Newz(int id, void* ptr, int nitems, type)
+ bool strEQ(char* s1, char* s2)
=for hackers
Found in file handy.h
-=item Nullav
+=item strGE
-Null AV pointer.
+Test two strings to see if the first, C<s1>, is greater than or equal to
+the second, C<s2>. Returns true or false.
+
+ bool strGE(char* s1, char* s2)
=for hackers
-Found in file av.h
+Found in file handy.h
+
+=item strGT
-=item Nullch
+Test two strings to see if the first, C<s1>, is greater than the second,
+C<s2>. Returns true or false.
-Null character pointer.
+ bool strGT(char* s1, char* s2)
=for hackers
Found in file handy.h
-=item Nullcv
+=item strLE
-Null CV pointer.
+Test two strings to see if the first, C<s1>, is less than or equal to the
+second, C<s2>. Returns true or false.
+
+ bool strLE(char* s1, char* s2)
=for hackers
-Found in file cv.h
+Found in file handy.h
-=item Nullhv
+=item strLT
-Null HV pointer.
+Test two strings to see if the first, C<s1>, is less than the second,
+C<s2>. Returns true or false.
+
+ bool strLT(char* s1, char* s2)
=for hackers
-Found in file hv.h
+Found in file handy.h
-=item Nullsv
+=item strNE
-Null SV pointer.
+Test two strings to see if they are different. Returns true or
+false.
+
+ bool strNE(char* s1, char* s2)
=for hackers
Found in file handy.h
-=item ORIGMARK
+=item strnEQ
-The original stack mark for the XSUB. See C<dORIGMARK>.
+Test two strings to see if they are equal. The C<len> parameter indicates
+the number of bytes to compare. Returns true or false. (A wrapper for
+C<strncmp>).
+
+ bool strnEQ(char* s1, char* s2, STRLEN len)
=for hackers
-Found in file pp.h
+Found in file handy.h
-=item perl_alloc
+=item strnNE
-Allocates a new Perl interpreter. See L<perlembed>.
+Test two strings to see if they are different. The C<len> parameter
+indicates the number of bytes to compare. Returns true or false. (A
+wrapper for C<strncmp>).
- PerlInterpreter* perl_alloc()
+ bool strnNE(char* s1, char* s2, STRLEN len)
=for hackers
-Found in file perl.c
+Found in file handy.h
-=item perl_construct
-Initializes a new Perl interpreter. See L<perlembed>.
+=back
- void perl_construct(PerlInterpreter* interp)
+=head1 Numeric functions
-=for hackers
-Found in file perl.c
+=over 8
-=item perl_destruct
+=item grok_bin
-Shuts down a Perl interpreter. See L<perlembed>.
+converts a string representing a binary number to numeric form.
+
+On entry I<start> and I<*len> give the string to scan, I<*flags> gives
+conversion flags, and I<result> should be NULL or a pointer to an NV.
+The scan stops at the end of the string, or the first invalid character.
+On return I<*len> is set to the length scanned string, and I<*flags> gives
+output flags.
- void perl_destruct(PerlInterpreter* interp)
+If the value is <= UV_MAX it is returned as a UV, the output flags are clear,
+and nothing is written to I<*result>. If the value is > UV_MAX C<grok_bin>
+returns UV_MAX, sets C<PERL_SCAN_GREATER_THAN_UV_MAX> in the output flags,
+and writes the value to I<*result> (or the value is discarded if I<result>
+is NULL).
+
+The hex number may optionally be prefixed with "0b" or "b" unless
+C<PERL_SCAN_DISALLOW_PREFIX> is set in I<*flags> on entry. If
+C<PERL_SCAN_ALLOW_UNDERSCORES> is set in I<*flags> then the binary
+number may use '_' characters to separate digits.
+
+ UV grok_bin(char* start, STRLEN* len, I32* flags, NV *result)
=for hackers
-Found in file perl.c
+Found in file numeric.c
-=item perl_free
+=item grok_hex
-Releases a Perl interpreter. See L<perlembed>.
+converts a string representing a hex number to numeric form.
- void perl_free(PerlInterpreter* interp)
+On entry I<start> and I<*len> give the string to scan, I<*flags> gives
+conversion flags, and I<result> should be NULL or a pointer to an NV.
+The scan stops at the end of the string, or the first non-hex-digit character.
+On return I<*len> is set to the length scanned string, and I<*flags> gives
+output flags.
+
+If the value is <= UV_MAX it is returned as a UV, the output flags are clear,
+and nothing is written to I<*result>. If the value is > UV_MAX C<grok_hex>
+returns UV_MAX, sets C<PERL_SCAN_GREATER_THAN_UV_MAX> in the output flags,
+and writes the value to I<*result> (or the value is discarded if I<result>
+is NULL).
+
+The hex number may optionally be prefixed with "0x" or "x" unless
+C<PERL_SCAN_DISALLOW_PREFIX> is set in I<*flags> on entry. If
+C<PERL_SCAN_ALLOW_UNDERSCORES> is set in I<*flags> then the hex
+number may use '_' characters to separate digits.
+
+ UV grok_hex(char* start, STRLEN* len, I32* flags, NV *result)
=for hackers
-Found in file perl.c
+Found in file numeric.c
-=item perl_parse
+=item grok_number
-Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
+Recognise (or not) a number. The type of the number is returned
+(0 if unrecognised), otherwise it is a bit-ORed combination of
+IS_NUMBER_IN_UV, IS_NUMBER_GREATER_THAN_UV_MAX, IS_NUMBER_NOT_INT,
+IS_NUMBER_NEG, IS_NUMBER_INFINITY, IS_NUMBER_NAN (defined in perl.h).
- int perl_parse(PerlInterpreter* interp, XSINIT_t xsinit, int argc, char** argv, char** env)
+If the value of the number can fit an in UV, it is returned in the *valuep
+IS_NUMBER_IN_UV will be set to indicate that *valuep is valid, IS_NUMBER_IN_UV
+will never be set unless *valuep is valid, but *valuep may have been assigned
+to during processing even though IS_NUMBER_IN_UV is not set on return.
+If valuep is NULL, IS_NUMBER_IN_UV will be set for the same cases as when
+valuep is non-NULL, but no actual assignment (or SEGV) will occur.
+
+IS_NUMBER_NOT_INT will be set with IS_NUMBER_IN_UV if trailing decimals were
+seen (in which case *valuep gives the true value truncated to an integer), and
+IS_NUMBER_NEG if the number is negative (in which case *valuep holds the
+absolute value). IS_NUMBER_IN_UV is not set if e notation was used or the
+number is larger than a UV.
+
+ int grok_number(const char *pv, STRLEN len, UV *valuep)
=for hackers
-Found in file perl.c
+Found in file numeric.c
-=item perl_run
+=item grok_numeric_radix
-Tells a Perl interpreter to run. See L<perlembed>.
+Scan and skip for a numeric decimal separator (radix).
- int perl_run(PerlInterpreter* interp)
+ bool grok_numeric_radix(const char **sp, const char *send)
=for hackers
-Found in file perl.c
+Found in file numeric.c
-=item PL_modglobal
+=item grok_oct
-C<PL_modglobal> is a general purpose, interpreter global HV for use by
-extensions that need to keep information on a per-interpreter basis.
-In a pinch, it can also be used as a symbol table for extensions
-to share data among each other. It is a good idea to use keys
-prefixed by the package name of the extension that owns the data.
- HV* PL_modglobal
+ UV grok_oct(char* start, STRLEN* len, I32* flags, NV *result)
=for hackers
-Found in file intrpvar.h
+Found in file numeric.c
-=item PL_na
+=item scan_bin
-A convenience variable which is typically used with C<SvPV> when one
-doesn't care about the length of the string. It is usually more efficient
-to either declare a local variable and use that instead or to use the
-C<SvPV_nolen> macro.
+For backwards compatibility. Use C<grok_bin> instead.
- STRLEN PL_na
+ NV scan_bin(char* start, STRLEN len, STRLEN* retlen)
=for hackers
-Found in file thrdvar.h
+Found in file numeric.c
-=item PL_sv_no
+=item scan_hex
-This is the C<false> SV. See C<PL_sv_yes>. Always refer to this as
-C<&PL_sv_no>.
+For backwards compatibility. Use C<grok_hex> instead.
- SV PL_sv_no
+ NV scan_hex(char* start, STRLEN len, STRLEN* retlen)
=for hackers
-Found in file intrpvar.h
+Found in file numeric.c
-=item PL_sv_undef
+=item scan_oct
-This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>.
+For backwards compatibility. Use C<grok_oct> instead.
- SV PL_sv_undef
+ NV scan_oct(char* start, STRLEN len, STRLEN* retlen)
=for hackers
-Found in file intrpvar.h
+Found in file numeric.c
-=item PL_sv_yes
-This is the C<true> SV. See C<PL_sv_no>. Always refer to this as
-C<&PL_sv_yes>.
+=back
- SV PL_sv_yes
+=head1 Optree Manipulation Functions
-=for hackers
-Found in file intrpvar.h
+=over 8
-=item POPi
+=item cv_const_sv
-Pops an integer off the stack.
+If C<cv> is a constant sub eligible for inlining. returns the constant
+value returned by the sub. Otherwise, returns NULL.
- IV POPi
+Constant subs can be created with C<newCONSTSUB> or as described in
+L<perlsub/"Constant Functions">.
+
+ SV* cv_const_sv(CV* cv)
=for hackers
-Found in file pp.h
+Found in file op.c
-=item POPl
+=item newCONSTSUB
-Pops a long off the stack.
+Creates a constant sub equivalent to Perl C<sub FOO () { 123 }> which is
+eligible for inlining at compile-time.
- long POPl
+ CV* newCONSTSUB(HV* stash, char* name, SV* sv)
=for hackers
-Found in file pp.h
+Found in file op.c
-=item POPn
+=item newXS
-Pops a double off the stack.
+Used by C<xsubpp> to hook up XSUBs as Perl subs.
- NV POPn
+=for hackers
+Found in file op.c
+
+
+=back
+
+=head1 Stack Manipulation Macros
+
+=over 8
+
+=item dMARK
+
+Declare a stack marker variable, C<mark>, for the XSUB. See C<MARK> and
+C<dORIGMARK>.
+
+ dMARK;
+
+=for hackers
+Found in file pp.h
+
+=item dORIGMARK
+
+Saves the original stack mark for the XSUB. See C<ORIGMARK>.
+
+ dORIGMARK;
+
+=for hackers
+Found in file pp.h
+
+=item dSP
+
+Declares a local copy of perl's stack pointer for the XSUB, available via
+the C<SP> macro. See C<SP>.
+
+ dSP;
+
+=for hackers
+Found in file pp.h
+
+=item EXTEND
+
+Used to extend the argument stack for an XSUB's return values. Once
+used, guarantees that there is room for at least C<nitems> to be pushed
+onto the stack.
+
+ void EXTEND(SP, int nitems)
+
+=for hackers
+Found in file pp.h
+
+=item MARK
+
+Stack marker variable for the XSUB. See C<dMARK>.
+
+=for hackers
+Found in file pp.h
+
+=item ORIGMARK
+
+The original stack mark for the XSUB. See C<dORIGMARK>.
+
+=for hackers
+Found in file pp.h
+
+=item POPi
+
+Pops an integer off the stack.
+
+ IV POPi
+
+=for hackers
+Found in file pp.h
+
+=item POPl
+
+Pops a long off the stack.
+
+ long POPl
+
+=for hackers
+Found in file pp.h
+
+=item POPn
+
+Pops a double off the stack.
+
+ NV POPn
+
+=for hackers
+Found in file pp.h
+
+=item POPp
+
+Pops a string off the stack. Deprecated. New code should provide
+a STRLEN n_a and use POPpx.
+
+ char* POPp
+
+=for hackers
+Found in file pp.h
+
+=item POPpbytex
+
+Pops a string off the stack which must consist of bytes i.e. characters < 256.
+Requires a variable STRLEN n_a in scope.
+
+ char* POPpbytex
+
+=for hackers
+Found in file pp.h
+
+=item POPpx
+
+Pops a string off the stack.
+Requires a variable STRLEN n_a in scope.
+
+ char* POPpx
+
+=for hackers
+Found in file pp.h
+
+=item POPs
+
+Pops an SV off the stack.
+
+ SV* POPs
+
+=for hackers
+Found in file pp.h
+
+=item PUSHi
+
+Push an integer onto the stack. The stack must have room for this element.
+Handles 'set' magic. See C<XPUSHi>.
+
+ void PUSHi(IV iv)
+
+=for hackers
+Found in file pp.h
+
+=item PUSHMARK
+
+Opening bracket for arguments on a callback. See C<PUTBACK> and
+L<perlcall>.
+
+ PUSHMARK;
+
+=for hackers
+Found in file pp.h
+
+=item PUSHn
+
+Push a double onto the stack. The stack must have room for this element.
+Handles 'set' magic. See C<XPUSHn>.
+
+ void PUSHn(NV nv)
+
+=for hackers
+Found in file pp.h
+
+=item PUSHp
+
+Push a string onto the stack. The stack must have room for this element.
+The C<len> indicates the length of the string. Handles 'set' magic. See
+C<XPUSHp>.
+
+ void PUSHp(char* str, STRLEN len)
+
+=for hackers
+Found in file pp.h
+
+=item PUSHs
+
+Push an SV onto the stack. The stack must have room for this element.
+Does not handle 'set' magic. See C<XPUSHs>.
+
+ void PUSHs(SV* sv)
+
+=for hackers
+Found in file pp.h
+
+=item PUSHu
+
+Push an unsigned integer onto the stack. The stack must have room for this
+element. See C<XPUSHu>.
+
+ void PUSHu(UV uv)
+
+=for hackers
+Found in file pp.h
+
+=item PUTBACK
+
+Closing bracket for XSUB arguments. This is usually handled by C<xsubpp>.
+See C<PUSHMARK> and L<perlcall> for other uses.
+
+ PUTBACK;
+
+=for hackers
+Found in file pp.h
+
+=item SP
+
+Stack pointer. This is usually handled by C<xsubpp>. See C<dSP> and
+C<SPAGAIN>.
+
+=for hackers
+Found in file pp.h
+
+=item SPAGAIN
+
+Refetch the stack pointer. Used after a callback. See L<perlcall>.
+
+ SPAGAIN;
+
+=for hackers
+Found in file pp.h
+
+=item XPUSHi
+
+Push an integer onto the stack, extending the stack if necessary. Handles
+'set' magic. See C<PUSHi>.
+
+ void XPUSHi(IV iv)
+
+=for hackers
+Found in file pp.h
+
+=item XPUSHn
+
+Push a double onto the stack, extending the stack if necessary. Handles
+'set' magic. See C<PUSHn>.
+
+ void XPUSHn(NV nv)
+
+=for hackers
+Found in file pp.h
+
+=item XPUSHp
+
+Push a string onto the stack, extending the stack if necessary. The C<len>
+indicates the length of the string. Handles 'set' magic. See
+C<PUSHp>.
+
+ void XPUSHp(char* str, STRLEN len)
+
+=for hackers
+Found in file pp.h
+
+=item XPUSHs
+
+Push an SV onto the stack, extending the stack if necessary. Does not
+handle 'set' magic. See C<PUSHs>.
+
+ void XPUSHs(SV* sv)
+
+=for hackers
+Found in file pp.h
+
+=item XPUSHu
+
+Push an unsigned integer onto the stack, extending the stack if necessary.
+See C<PUSHu>.
+
+ void XPUSHu(UV uv)
+
+=for hackers
+Found in file pp.h
+
+=item XSRETURN
+
+Return from XSUB, indicating number of items on the stack. This is usually
+handled by C<xsubpp>.
+
+ void XSRETURN(int nitems)
+
+=for hackers
+Found in file XSUB.h
+
+=item XSRETURN_IV
+
+Return an integer from an XSUB immediately. Uses C<XST_mIV>.
+
+ void XSRETURN_IV(IV iv)
+
+=for hackers
+Found in file XSUB.h
+
+=item XSRETURN_NO
+
+Return C<&PL_sv_no> from an XSUB immediately. Uses C<XST_mNO>.
+
+ XSRETURN_NO;
+
+=for hackers
+Found in file XSUB.h
+
+=item XSRETURN_NV
+
+Return a double from an XSUB immediately. Uses C<XST_mNV>.
+
+ void XSRETURN_NV(NV nv)
+
+=for hackers
+Found in file XSUB.h
+
+=item XSRETURN_PV
+
+Return a copy of a string from an XSUB immediately. Uses C<XST_mPV>.
+
+ void XSRETURN_PV(char* str)
+
+=for hackers
+Found in file XSUB.h
+
+=item XSRETURN_UNDEF
+
+Return C<&PL_sv_undef> from an XSUB immediately. Uses C<XST_mUNDEF>.
+
+ XSRETURN_UNDEF;
+
+=for hackers
+Found in file XSUB.h
+
+=item XSRETURN_YES
+
+Return C<&PL_sv_yes> from an XSUB immediately. Uses C<XST_mYES>.
+
+ XSRETURN_YES;
+
+=for hackers
+Found in file XSUB.h
+
+=item XST_mIV
+
+Place an integer into the specified position C<pos> on the stack. The
+value is stored in a new mortal SV.
+
+ void XST_mIV(int pos, IV iv)
+
+=for hackers
+Found in file XSUB.h
+
+=item XST_mNO
+
+Place C<&PL_sv_no> into the specified position C<pos> on the
+stack.
+
+ void XST_mNO(int pos)
+
+=for hackers
+Found in file XSUB.h
+
+=item XST_mNV
+
+Place a double into the specified position C<pos> on the stack. The value
+is stored in a new mortal SV.
+
+ void XST_mNV(int pos, NV nv)
+
+=for hackers
+Found in file XSUB.h
+
+=item XST_mPV
+
+Place a copy of a string into the specified position C<pos> on the stack.
+The value is stored in a new mortal SV.
+
+ void XST_mPV(int pos, char* str)
+
+=for hackers
+Found in file XSUB.h
+
+=item XST_mUNDEF
+
+Place C<&PL_sv_undef> into the specified position C<pos> on the
+stack.
+
+ void XST_mUNDEF(int pos)
+
+=for hackers
+Found in file XSUB.h
+
+=item XST_mYES
+
+Place C<&PL_sv_yes> into the specified position C<pos> on the
+stack.
+
+ void XST_mYES(int pos)
+
+=for hackers
+Found in file XSUB.h
+
+
+=back
+
+=head1 SV Flags
+
+=over 8
+
+=item svtype
+
+An enum of flags for Perl types. These are found in the file B<sv.h>
+in the C<svtype> enum. Test these flags with the C<SvTYPE> macro.
+
+=for hackers
+Found in file sv.h
+
+=item SVt_IV
+
+Integer type flag for scalars. See C<svtype>.
+
+=for hackers
+Found in file sv.h
+
+=item SVt_NV
+
+Double type flag for scalars. See C<svtype>.
+
+=for hackers
+Found in file sv.h
+
+=item SVt_PV
+
+Pointer type flag for scalars. See C<svtype>.
+
+=for hackers
+Found in file sv.h
+
+=item SVt_PVAV
+
+Type flag for arrays. See C<svtype>.
+
+=for hackers
+Found in file sv.h
+
+=item SVt_PVCV
+
+Type flag for code refs. See C<svtype>.
+
+=for hackers
+Found in file sv.h
+
+=item SVt_PVHV
+
+Type flag for hashes. See C<svtype>.
+
+=for hackers
+Found in file sv.h
+
+=item SVt_PVMG
+
+Type flag for blessed scalars. See C<svtype>.
+
+=for hackers
+Found in file sv.h
+
+
+=back
+
+=head1 SV Manipulation Functions
+
+=over 8
+
+=item get_sv
+
+Returns the SV of the specified Perl scalar. If C<create> is set and the
+Perl variable does not exist then it will be created. If C<create> is not
+set and the variable does not exist then NULL is returned.
+
+NOTE: the perl_ form of this function is deprecated.
+
+ SV* get_sv(const char* name, I32 create)
+
+=for hackers
+Found in file perl.c
+
+=item looks_like_number
+
+Test if the content of an SV looks like a number (or is a number).
+C<Inf> and C<Infinity> are treated as numbers (so will not issue a
+non-numeric warning), even if your atof() doesn't grok them.
+
+ I32 looks_like_number(SV* sv)
+
+=for hackers
+Found in file sv.c
+
+=item newRV_inc
+
+Creates an RV wrapper for an SV. The reference count for the original SV is
+incremented.
+
+ SV* newRV_inc(SV* sv)
+
+=for hackers
+Found in file sv.h
+
+=item newRV_noinc
+
+Creates an RV wrapper for an SV. The reference count for the original
+SV is B<not> incremented.
+
+ SV* newRV_noinc(SV *sv)
+
+=for hackers
+Found in file sv.c
+
+=item newSV
+
+Create a new null SV, or if len > 0, create a new empty SVt_PV type SV
+with an initial PV allocation of len+1. Normally accessed via the C<NEWSV>
+macro.
+
+ SV* newSV(STRLEN len)
+
+=for hackers
+Found in file sv.c
+
+=item newSViv
+
+Creates a new SV and copies an integer into it. The reference count for the
+SV is set to 1.
+
+ SV* newSViv(IV i)
+
+=for hackers
+Found in file sv.c
+
+=item newSVnv
+
+Creates a new SV and copies a floating point value into it.
+The reference count for the SV is set to 1.
+
+ SV* newSVnv(NV n)
+
+=for hackers
+Found in file sv.c
+
+=item newSVpv
+
+Creates a new SV and copies a string into it. The reference count for the
+SV is set to 1. If C<len> is zero, Perl will compute the length using
+strlen(). For efficiency, consider using C<newSVpvn> instead.
+
+ SV* newSVpv(const char* s, STRLEN len)
+
+=for hackers
+Found in file sv.c
+
+=item newSVpvf
+
+Creates a new SV and initializes it with the string formatted like
+C<sprintf>.
+
+ SV* newSVpvf(const char* pat, ...)
+
+=for hackers
+Found in file sv.c
+
+=item newSVpvn
+
+Creates a new SV and copies a string into it. The reference count for the
+SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
+string. You are responsible for ensuring that the source string is at least
+C<len> bytes long.
+
+ SV* newSVpvn(const char* s, STRLEN len)
+
+=for hackers
+Found in file sv.c
+
+=item newSVpvn_share
+
+Creates a new SV with its SvPVX pointing to a shared string in the string
+table. If the string does not already exist in the table, it is created
+first. Turns on READONLY and FAKE. The string's hash is stored in the UV
+slot of the SV; if the C<hash> parameter is non-zero, that value is used;
+otherwise the hash is computed. The idea here is that as the string table
+is used for shared hash keys these strings will have SvPVX == HeKEY and
+hash lookup will avoid string compare.
+
+ SV* newSVpvn_share(const char* s, I32 len, U32 hash)
+
+=for hackers
+Found in file sv.c
+
+=item newSVrv
+
+Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
+it will be upgraded to one. If C<classname> is non-null then the new SV will
+be blessed in the specified package. The new SV is returned and its
+reference count is 1.
+
+ SV* newSVrv(SV* rv, const char* classname)
+
+=for hackers
+Found in file sv.c
+
+=item newSVsv
+
+Creates a new SV which is an exact duplicate of the original SV.
+(Uses C<sv_setsv>).
+
+ SV* newSVsv(SV* old)
+
+=for hackers
+Found in file sv.c
+
+=item newSVuv
+
+Creates a new SV and copies an unsigned integer into it.
+The reference count for the SV is set to 1.
+
+ SV* newSVuv(UV u)
+
+=for hackers
+Found in file sv.c
+
+=item new_vstring
+
+Returns a pointer to the next character after the parsed
+vstring, as well as updating the passed in sv.
+
+Function must be called like
+
+ sv = NEWSV(92,5);
+ s = new_vstring(s,sv);
+
+The sv must already be large enough to store the vstring
+passed in.
+
+ char* new_vstring(char *vstr, SV *sv)
+
+=for hackers
+Found in file util.c
+
+=item SvCUR
+
+Returns the length of the string which is in the SV. See C<SvLEN>.
+
+ STRLEN SvCUR(SV* sv)
+
+=for hackers
+Found in file sv.h
+
+=item SvCUR_set
+
+Set the length of the string which is in the SV. See C<SvCUR>.
+
+ void SvCUR_set(SV* sv, STRLEN len)
+
+=for hackers
+Found in file sv.h
+
+=item SvEND
+
+Returns a pointer to the last character in the string which is in the SV.
+See C<SvCUR>. Access the character as *(SvEND(sv)).
+
+ char* SvEND(SV* sv)
+
+=for hackers
+Found in file sv.h
+
+=item SvGROW
+
+Expands the character buffer in the SV so that it has room for the
+indicated number of bytes (remember to reserve space for an extra trailing
+NUL character). Calls C<sv_grow> to perform the expansion if necessary.
+Returns a pointer to the character buffer.
+
+ char * SvGROW(SV* sv, STRLEN len)
+
+=for hackers
+Found in file sv.h
+
+=item SvIOK
+
+Returns a boolean indicating whether the SV contains an integer.
+
+ bool SvIOK(SV* sv)
+
+=for hackers
+Found in file sv.h
+
+=item SvIOKp
+
+Returns a boolean indicating whether the SV contains an integer. Checks
+the B<private> setting. Use C<SvIOK>.
+
+ bool SvIOKp(SV* sv)
+
+=for hackers
+Found in file sv.h
+
+=item SvIOK_notUV
+
+Returns a boolean indicating whether the SV contains a signed integer.
+
+ void SvIOK_notUV(SV* sv)
+
+=for hackers
+Found in file sv.h
+
+=item SvIOK_off
+
+Unsets the IV status of an SV.
+
+ void SvIOK_off(SV* sv)
+
+=for hackers
+Found in file sv.h
+
+=item SvIOK_on
+
+Tells an SV that it is an integer.
+
+ void SvIOK_on(SV* sv)
+
+=for hackers
+Found in file sv.h
+
+=item SvIOK_only
+
+Tells an SV that it is an integer and disables all other OK bits.
+
+ void SvIOK_only(SV* sv)
=for hackers
-Found in file pp.h
+Found in file sv.h
-=item POPp
+=item SvIOK_only_UV
-Pops a string off the stack.
+Tells and SV that it is an unsigned integer and disables all other OK bits.
- char* POPp
+ void SvIOK_only_UV(SV* sv)
=for hackers
-Found in file pp.h
+Found in file sv.h
-=item POPs
+=item SvIOK_UV
-Pops an SV off the stack.
+Returns a boolean indicating whether the SV contains an unsigned integer.
- SV* POPs
+ void SvIOK_UV(SV* sv)
=for hackers
-Found in file pp.h
+Found in file sv.h
-=item PUSHi
+=item SvIV
-Push an integer onto the stack. The stack must have room for this element.
-Handles 'set' magic. See C<XPUSHi>.
+Coerces the given SV to an integer and returns it. See C<SvIVx> for a
+version which guarantees to evaluate sv only once.
- void PUSHi(IV iv)
+ IV SvIV(SV* sv)
=for hackers
-Found in file pp.h
+Found in file sv.h
-=item PUSHMARK
+=item SvIVx
-Opening bracket for arguments on a callback. See C<PUTBACK> and
-L<perlcall>.
+Coerces the given SV to an integer and returns it. Guarantees to evaluate
+sv only once. Use the more efficient C<SvIV> otherwise.
- PUSHMARK;
+ IV SvIVx(SV* sv)
=for hackers
-Found in file pp.h
+Found in file sv.h
-=item PUSHn
+=item SvIVX
-Push a double onto the stack. The stack must have room for this element.
-Handles 'set' magic. See C<XPUSHn>.
+Returns the raw value in the SV's IV slot, without checks or conversions.
+Only use when you are sure SvIOK is true. See also C<SvIV()>.
- void PUSHn(NV nv)
+ IV SvIVX(SV* sv)
=for hackers
-Found in file pp.h
+Found in file sv.h
-=item PUSHp
+=item SvLEN
-Push a string onto the stack. The stack must have room for this element.
-The C<len> indicates the length of the string. Handles 'set' magic. See
-C<XPUSHp>.
+Returns the size of the string buffer in the SV, not including any part
+attributable to C<SvOOK>. See C<SvCUR>.
- void PUSHp(char* str, STRLEN len)
+ STRLEN SvLEN(SV* sv)
=for hackers
-Found in file pp.h
+Found in file sv.h
-=item PUSHs
+=item SvNIOK
-Push an SV onto the stack. The stack must have room for this element.
-Does not handle 'set' magic. See C<XPUSHs>.
+Returns a boolean indicating whether the SV contains a number, integer or
+double.
- void PUSHs(SV* sv)
+ bool SvNIOK(SV* sv)
=for hackers
-Found in file pp.h
+Found in file sv.h
-=item PUSHu
+=item SvNIOKp
-Push an unsigned integer onto the stack. The stack must have room for this
-element. See C<XPUSHu>.
+Returns a boolean indicating whether the SV contains a number, integer or
+double. Checks the B<private> setting. Use C<SvNIOK>.
- void PUSHu(UV uv)
+ bool SvNIOKp(SV* sv)
=for hackers
-Found in file pp.h
+Found in file sv.h
-=item PUTBACK
+=item SvNIOK_off
-Closing bracket for XSUB arguments. This is usually handled by C<xsubpp>.
-See C<PUSHMARK> and L<perlcall> for other uses.
+Unsets the NV/IV status of an SV.
- PUTBACK;
+ void SvNIOK_off(SV* sv)
=for hackers
-Found in file pp.h
+Found in file sv.h
-=item Renew
+=item SvNOK
-The XSUB-writer's interface to the C C<realloc> function.
+Returns a boolean indicating whether the SV contains a double.
- void Renew(void* ptr, int nitems, type)
+ bool SvNOK(SV* sv)
=for hackers
-Found in file handy.h
+Found in file sv.h
-=item Renewc
+=item SvNOKp
-The XSUB-writer's interface to the C C<realloc> function, with
-cast.
+Returns a boolean indicating whether the SV contains a double. Checks the
+B<private> setting. Use C<SvNOK>.
- void Renewc(void* ptr, int nitems, type, cast)
+ bool SvNOKp(SV* sv)
=for hackers
-Found in file handy.h
-
-=item require_pv
+Found in file sv.h
-Tells Perl to C<require> a module.
+=item SvNOK_off
-NOTE: the perl_ form of this function is deprecated.
+Unsets the NV status of an SV.
- void require_pv(const char* pv)
+ void SvNOK_off(SV* sv)
=for hackers
-Found in file perl.c
+Found in file sv.h
-=item RETVAL
+=item SvNOK_on
-Variable which is setup by C<xsubpp> to hold the return value for an
-XSUB. This is always the proper type for the XSUB. See
-L<perlxs/"The RETVAL Variable">.
+Tells an SV that it is a double.
- (whatever) RETVAL
+ void SvNOK_on(SV* sv)
=for hackers
-Found in file XSUB.h
+Found in file sv.h
-=item Safefree
+=item SvNOK_only
-The XSUB-writer's interface to the C C<free> function.
+Tells an SV that it is a double and disables all other OK bits.
- void Safefree(void* ptr)
+ void SvNOK_only(SV* sv)
=for hackers
-Found in file handy.h
+Found in file sv.h
-=item savepv
+=item SvNV
-Copy a string to a safe spot. This does not use an SV.
+Coerce the given SV to a double and return it. See C<SvNVx> for a version
+which guarantees to evaluate sv only once.
- char* savepv(const char* sv)
+ NV SvNV(SV* sv)
=for hackers
-Found in file util.c
+Found in file sv.h
-=item savepvn
+=item SvNVX
-Copy a string to a safe spot. The C<len> indicates number of bytes to
-copy. This does not use an SV.
+Returns the raw value in the SV's NV slot, without checks or conversions.
+Only use when you are sure SvNOK is true. See also C<SvNV()>.
- char* savepvn(const char* sv, I32 len)
+ NV SvNVX(SV* sv)
=for hackers
-Found in file util.c
+Found in file sv.h
-=item SAVETMPS
+=item SvNVx
-Opening bracket for temporaries on a callback. See C<FREETMPS> and
-L<perlcall>.
+Coerces the given SV to a double and returns it. Guarantees to evaluate
+sv only once. Use the more efficient C<SvNV> otherwise.
- SAVETMPS;
+ NV SvNVx(SV* sv)
=for hackers
-Found in file scope.h
+Found in file sv.h
-=item SP
+=item SvOK
-Stack pointer. This is usually handled by C<xsubpp>. See C<dSP> and
-C<SPAGAIN>.
+Returns a boolean indicating whether the value is an SV.
+
+ bool SvOK(SV* sv)
=for hackers
-Found in file pp.h
+Found in file sv.h
-=item SPAGAIN
+=item SvOOK
-Refetch the stack pointer. Used after a callback. See L<perlcall>.
+Returns a boolean indicating whether the SvIVX is a valid offset value for
+the SvPVX. This hack is used internally to speed up removal of characters
+from the beginning of a SvPV. When SvOOK is true, then the start of the
+allocated string buffer is really (SvPVX - SvIVX).
- SPAGAIN;
+ bool SvOOK(SV* sv)
=for hackers
-Found in file pp.h
+Found in file sv.h
-=item ST
+=item SvPOK
-Used to access elements on the XSUB's stack.
+Returns a boolean indicating whether the SV contains a character
+string.
- SV* ST(int ix)
+ bool SvPOK(SV* sv)
=for hackers
-Found in file XSUB.h
+Found in file sv.h
-=item strEQ
+=item SvPOKp
-Test two strings to see if they are equal. Returns true or false.
+Returns a boolean indicating whether the SV contains a character string.
+Checks the B<private> setting. Use C<SvPOK>.
- bool strEQ(char* s1, char* s2)
+ bool SvPOKp(SV* sv)
=for hackers
-Found in file handy.h
+Found in file sv.h
-=item strGE
+=item SvPOK_off
-Test two strings to see if the first, C<s1>, is greater than or equal to
-the second, C<s2>. Returns true or false.
+Unsets the PV status of an SV.
- bool strGE(char* s1, char* s2)
+ void SvPOK_off(SV* sv)
=for hackers
-Found in file handy.h
+Found in file sv.h
-=item strGT
+=item SvPOK_on
-Test two strings to see if the first, C<s1>, is greater than the second,
-C<s2>. Returns true or false.
+Tells an SV that it is a string.
- bool strGT(char* s1, char* s2)
+ void SvPOK_on(SV* sv)
=for hackers
-Found in file handy.h
+Found in file sv.h
-=item strLE
+=item SvPOK_only
-Test two strings to see if the first, C<s1>, is less than or equal to the
-second, C<s2>. Returns true or false.
+Tells an SV that it is a string and disables all other OK bits.
+Will also turn off the UTF8 status.
- bool strLE(char* s1, char* s2)
+ void SvPOK_only(SV* sv)
=for hackers
-Found in file handy.h
+Found in file sv.h
-=item strLT
+=item SvPOK_only_UTF8
-Test two strings to see if the first, C<s1>, is less than the second,
-C<s2>. Returns true or false.
+Tells an SV that it is a string and disables all other OK bits,
+and leaves the UTF8 status as it was.
- bool strLT(char* s1, char* s2)
+ void SvPOK_only_UTF8(SV* sv)
=for hackers
-Found in file handy.h
+Found in file sv.h
-=item strNE
+=item SvPV
-Test two strings to see if they are different. Returns true or
-false.
+Returns a pointer to the string in the SV, or a stringified form of
+the SV if the SV does not contain a string. The SV may cache the
+stringified version becoming C<SvPOK>. Handles 'get' magic. See also
+C<SvPVx> for a version which guarantees to evaluate sv only once.
- bool strNE(char* s1, char* s2)
+ char* SvPV(SV* sv, STRLEN len)
=for hackers
-Found in file handy.h
+Found in file sv.h
-=item strnEQ
+=item SvPVbyte
-Test two strings to see if they are equal. The C<len> parameter indicates
-the number of bytes to compare. Returns true or false. (A wrapper for
-C<strncmp>).
+Like C<SvPV>, but converts sv to byte representation first if necessary.
- bool strnEQ(char* s1, char* s2, STRLEN len)
+ char* SvPVbyte(SV* sv, STRLEN len)
=for hackers
-Found in file handy.h
+Found in file sv.h
-=item strnNE
+=item SvPVbytex
-Test two strings to see if they are different. The C<len> parameter
-indicates the number of bytes to compare. Returns true or false. (A
-wrapper for C<strncmp>).
+Like C<SvPV>, but converts sv to byte representation first if necessary.
+Guarantees to evaluate sv only once; use the more efficient C<SvPVbyte>
+otherwise.
- bool strnNE(char* s1, char* s2, STRLEN len)
+
+ char* SvPVbytex(SV* sv, STRLEN len)
=for hackers
-Found in file handy.h
+Found in file sv.h
-=item StructCopy
+=item SvPVbytex_force
-This is an architecture-independent macro to copy one structure to another.
+Like C<SvPV_force>, but converts sv to byte representation first if necessary.
+Guarantees to evaluate sv only once; use the more efficient C<SvPVbyte_force>
+otherwise.
- void StructCopy(type src, type dest, type)
+ char* SvPVbytex_force(SV* sv, STRLEN len)
=for hackers
-Found in file handy.h
+Found in file sv.h
-=item SvCUR
+=item SvPVbyte_force
-Returns the length of the string which is in the SV. See C<SvLEN>.
+Like C<SvPV_force>, but converts sv to byte representation first if necessary.
- STRLEN SvCUR(SV* sv)
+ char* SvPVbyte_force(SV* sv, STRLEN len)
=for hackers
Found in file sv.h
-=item SvCUR_set
+=item SvPVbyte_nolen
-Set the length of the string which is in the SV. See C<SvCUR>.
+Like C<SvPV_nolen>, but converts sv to byte representation first if necessary.
- void SvCUR_set(SV* sv, STRLEN len)
+ char* SvPVbyte_nolen(SV* sv)
=for hackers
Found in file sv.h
-=item SvEND
+=item SvPVutf8
-Returns a pointer to the last character in the string which is in the SV.
-See C<SvCUR>. Access the character as *(SvEND(sv)).
+Like C<SvPV>, but converts sv to utf8 first if necessary.
- char* SvEND(SV* sv)
+ char* SvPVutf8(SV* sv, STRLEN len)
=for hackers
Found in file sv.h
-=item SvGETMAGIC
+=item SvPVutf8x
-Invokes C<mg_get> on an SV if it has 'get' magic. This macro evaluates its
-argument more than once.
+Like C<SvPV>, but converts sv to utf8 first if necessary.
+Guarantees to evaluate sv only once; use the more efficient C<SvPVutf8>
+otherwise.
- void SvGETMAGIC(SV* sv)
+ char* SvPVutf8x(SV* sv, STRLEN len)
=for hackers
Found in file sv.h
-=item SvGROW
+=item SvPVutf8x_force
-Expands the character buffer in the SV so that it has room for the
-indicated number of bytes (remember to reserve space for an extra trailing
-NUL character). Calls C<sv_grow> to perform the expansion if necessary.
-Returns a pointer to the character buffer.
+Like C<SvPV_force>, but converts sv to utf8 first if necessary.
+Guarantees to evaluate sv only once; use the more efficient C<SvPVutf8_force>
+otherwise.
- void SvGROW(SV* sv, STRLEN len)
+ char* SvPVutf8x_force(SV* sv, STRLEN len)
=for hackers
Found in file sv.h
-=item SvIOK
+=item SvPVutf8_force
-Returns a boolean indicating whether the SV contains an integer.
+Like C<SvPV_force>, but converts sv to utf8 first if necessary.
- bool SvIOK(SV* sv)
+ char* SvPVutf8_force(SV* sv, STRLEN len)
=for hackers
Found in file sv.h
-=item SvIOKp
+=item SvPVutf8_nolen
-Returns a boolean indicating whether the SV contains an integer. Checks
-the B<private> setting. Use C<SvIOK>.
+Like C<SvPV_nolen>, but converts sv to utf8 first if necessary.
- bool SvIOKp(SV* sv)
+ char* SvPVutf8_nolen(SV* sv)
=for hackers
Found in file sv.h
-=item SvIOK_notUV
+=item SvPVx
-Returns a boolean indicating whether the SV contains an signed integer.
+A version of C<SvPV> which guarantees to evaluate sv only once.
- void SvIOK_notUV(SV* sv)
+ char* SvPVx(SV* sv, STRLEN len)
=for hackers
Found in file sv.h
-=item SvIOK_off
+=item SvPVX
-Unsets the IV status of an SV.
+Returns a pointer to the physical string in the SV. The SV must contain a
+string.
- void SvIOK_off(SV* sv)
+ char* SvPVX(SV* sv)
=for hackers
Found in file sv.h
-=item SvIOK_on
+=item SvPV_force
-Tells an SV that it is an integer.
+Like C<SvPV> but will force the SV into containing just a string
+(C<SvPOK_only>). You want force if you are going to update the C<SvPVX>
+directly.
- void SvIOK_on(SV* sv)
+ char* SvPV_force(SV* sv, STRLEN len)
=for hackers
Found in file sv.h
-=item SvIOK_only
+=item SvPV_force_nomg
-Tells an SV that it is an integer and disables all other OK bits.
+Like C<SvPV> but will force the SV into containing just a string
+(C<SvPOK_only>). You want force if you are going to update the C<SvPVX>
+directly. Doesn't process magic.
- void SvIOK_only(SV* sv)
+ char* SvPV_force_nomg(SV* sv, STRLEN len)
=for hackers
Found in file sv.h
-=item SvIOK_only_UV
+=item SvPV_nolen
-Tells and SV that it is an unsigned integer and disables all other OK bits.
+Returns a pointer to the string in the SV, or a stringified form of
+the SV if the SV does not contain a string. The SV may cache the
+stringified form becoming C<SvPOK>. Handles 'get' magic.
- void SvIOK_only_UV(SV* sv)
+ char* SvPV_nolen(SV* sv)
=for hackers
Found in file sv.h
-=item SvIOK_UV
+=item SvREFCNT
-Returns a boolean indicating whether the SV contains an unsigned integer.
+Returns the value of the object's reference count.
- void SvIOK_UV(SV* sv)
+ U32 SvREFCNT(SV* sv)
=for hackers
Found in file sv.h
-=item SvIV
+=item SvREFCNT_dec
-Coerces the given SV to an integer and returns it.
+Decrements the reference count of the given SV.
- IV SvIV(SV* sv)
+ void SvREFCNT_dec(SV* sv)
=for hackers
Found in file sv.h
-=item SvIVX
+=item SvREFCNT_inc
-Returns the integer which is stored in the SV, assuming SvIOK is
-true.
+Increments the reference count of the given SV.
- IV SvIVX(SV* sv)
+ SV* SvREFCNT_inc(SV* sv)
=for hackers
Found in file sv.h
-=item SvLEN
+=item SvROK
-Returns the size of the string buffer in the SV, not including any part
-attributable to C<SvOOK>. See C<SvCUR>.
+Tests if the SV is an RV.
- STRLEN SvLEN(SV* sv)
+ bool SvROK(SV* sv)
=for hackers
Found in file sv.h
-=item SvNIOK
+=item SvROK_off
-Returns a boolean indicating whether the SV contains a number, integer or
-double.
+Unsets the RV status of an SV.
- bool SvNIOK(SV* sv)
+ void SvROK_off(SV* sv)
=for hackers
Found in file sv.h
-=item SvNIOKp
+=item SvROK_on
-Returns a boolean indicating whether the SV contains a number, integer or
-double. Checks the B<private> setting. Use C<SvNIOK>.
+Tells an SV that it is an RV.
- bool SvNIOKp(SV* sv)
+ void SvROK_on(SV* sv)
=for hackers
Found in file sv.h
-=item SvNIOK_off
+=item SvRV
-Unsets the NV/IV status of an SV.
+Dereferences an RV to return the SV.
- void SvNIOK_off(SV* sv)
+ SV* SvRV(SV* sv)
=for hackers
Found in file sv.h
-=item SvNOK
+=item SvSTASH
-Returns a boolean indicating whether the SV contains a double.
+Returns the stash of the SV.
- bool SvNOK(SV* sv)
+ HV* SvSTASH(SV* sv)
=for hackers
Found in file sv.h
-=item SvNOKp
+=item SvTAINT
-Returns a boolean indicating whether the SV contains a double. Checks the
-B<private> setting. Use C<SvNOK>.
+Taints an SV if tainting is enabled
- bool SvNOKp(SV* sv)
+ void SvTAINT(SV* sv)
=for hackers
Found in file sv.h
-=item SvNOK_off
+=item SvTAINTED
-Unsets the NV status of an SV.
+Checks to see if an SV is tainted. Returns TRUE if it is, FALSE if
+not.
- void SvNOK_off(SV* sv)
+ bool SvTAINTED(SV* sv)
=for hackers
Found in file sv.h
-=item SvNOK_on
+=item SvTAINTED_off
-Tells an SV that it is a double.
+Untaints an SV. Be I<very> careful with this routine, as it short-circuits
+some of Perl's fundamental security features. XS module authors should not
+use this function unless they fully understand all the implications of
+unconditionally untainting the value. Untainting should be done in the
+standard perl fashion, via a carefully crafted regexp, rather than directly
+untainting variables.
- void SvNOK_on(SV* sv)
+ void SvTAINTED_off(SV* sv)
=for hackers
Found in file sv.h
-=item SvNOK_only
+=item SvTAINTED_on
-Tells an SV that it is a double and disables all other OK bits.
+Marks an SV as tainted.
- void SvNOK_only(SV* sv)
+ void SvTAINTED_on(SV* sv)
=for hackers
Found in file sv.h
-=item SvNV
+=item SvTRUE
-Coerce the given SV to a double and return it.
+Returns a boolean indicating whether Perl would evaluate the SV as true or
+false, defined or undefined. Does not handle 'get' magic.
- NV SvNV(SV* sv)
+ bool SvTRUE(SV* sv)
=for hackers
Found in file sv.h
-=item SvNVX
+=item SvTYPE
-Returns the double which is stored in the SV, assuming SvNOK is
-true.
+Returns the type of the SV. See C<svtype>.
- NV SvNVX(SV* sv)
+ svtype SvTYPE(SV* sv)
=for hackers
Found in file sv.h
-=item SvOK
+=item SvUNLOCK
-Returns a boolean indicating whether the value is an SV.
+Releases a mutual exclusion lock on sv if a suitable module
+has been loaded.
- bool SvOK(SV* sv)
+
+ void SvUNLOCK(SV* sv)
=for hackers
Found in file sv.h
-=item SvOOK
+=item SvUOK
-Returns a boolean indicating whether the SvIVX is a valid offset value for
-the SvPVX. This hack is used internally to speed up removal of characters
-from the beginning of a SvPV. When SvOOK is true, then the start of the
-allocated string buffer is really (SvPVX - SvIVX).
+Returns a boolean indicating whether the SV contains an unsigned integer.
- bool SvOOK(SV* sv)
+ void SvUOK(SV* sv)
=for hackers
Found in file sv.h
-=item SvPOK
+=item SvUPGRADE
-Returns a boolean indicating whether the SV contains a character
-string.
+Used to upgrade an SV to a more complex form. Uses C<sv_upgrade> to
+perform the upgrade if necessary. See C<svtype>.
- bool SvPOK(SV* sv)
+ void SvUPGRADE(SV* sv, svtype type)
=for hackers
Found in file sv.h
-=item SvPOKp
+=item SvUTF8
-Returns a boolean indicating whether the SV contains a character string.
-Checks the B<private> setting. Use C<SvPOK>.
+Returns a boolean indicating whether the SV contains UTF-8 encoded data.
- bool SvPOKp(SV* sv)
+ void SvUTF8(SV* sv)
=for hackers
Found in file sv.h
-=item SvPOK_off
+=item SvUTF8_off
-Unsets the PV status of an SV.
+Unsets the UTF8 status of an SV.
- void SvPOK_off(SV* sv)
+ void SvUTF8_off(SV *sv)
=for hackers
Found in file sv.h
-=item SvPOK_on
+=item SvUTF8_on
-Tells an SV that it is a string.
+Turn on the UTF8 status of an SV (the data is not changed, just the flag).
+Do not use frivolously.
- void SvPOK_on(SV* sv)
+ void SvUTF8_on(SV *sv)
=for hackers
Found in file sv.h
-=item SvPOK_only
+=item SvUV
-Tells an SV that it is a string and disables all other OK bits.
+Coerces the given SV to an unsigned integer and returns it. See C<SvUVx>
+for a version which guarantees to evaluate sv only once.
- void SvPOK_only(SV* sv)
+ UV SvUV(SV* sv)
=for hackers
Found in file sv.h
-=item SvPOK_only_UTF8
+=item SvUVX
-Tells an SV that it is a UTF8 string (do not use frivolously)
-and disables all other OK bits.
-
- void SvPOK_only_UTF8(SV* sv)
+Returns the raw value in the SV's UV slot, without checks or conversions.
+Only use when you are sure SvIOK is true. See also C<SvUV()>.
+
+ UV SvUVX(SV* sv)
=for hackers
Found in file sv.h
-=item SvPV
+=item SvUVx
-Returns a pointer to the string in the SV, or a stringified form of the SV
-if the SV does not contain a string. Handles 'get' magic.
+Coerces the given SV to an unsigned integer and returns it. Guarantees to
+evaluate sv only once. Use the more efficient C<SvUV> otherwise.
- char* SvPV(SV* sv, STRLEN len)
+ UV SvUVx(SV* sv)
=for hackers
Found in file sv.h
-=item SvPVX
+=item sv_2bool
-Returns a pointer to the string in the SV. The SV must contain a
-string.
+This function is only called on magical items, and is only used by
+sv_true() or its macro equivalent.
- char* SvPVX(SV* sv)
+ bool sv_2bool(SV* sv)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvPV_force
+=item sv_2cv
-Like <SvPV> but will force the SV into becoming a string (SvPOK). You want
-force if you are going to update the SvPVX directly.
+Using various gambits, try to get a CV from an SV; in addition, try if
+possible to set C<*st> and C<*gvp> to the stash and GV associated with it.
- char* SvPV_force(SV* sv, STRLEN len)
+ CV* sv_2cv(SV* sv, HV** st, GV** gvp, I32 lref)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvPV_nolen
+=item sv_2io
-Returns a pointer to the string in the SV, or a stringified form of the SV
-if the SV does not contain a string. Handles 'get' magic.
+Using various gambits, try to get an IO from an SV: the IO slot if its a
+GV; or the recursive result if we're an RV; or the IO slot of the symbol
+named after the PV if we're a string.
- char* SvPV_nolen(SV* sv)
+ IO* sv_2io(SV* sv)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvREFCNT
+=item sv_2iv
-Returns the value of the object's reference count.
+Return the integer value of an SV, doing any necessary string conversion,
+magic etc. Normally used via the C<SvIV(sv)> and C<SvIVx(sv)> macros.
- U32 SvREFCNT(SV* sv)
+ IV sv_2iv(SV* sv)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvREFCNT_dec
+=item sv_2mortal
-Decrements the reference count of the given SV.
+Marks an existing SV as mortal. The SV will be destroyed "soon", either
+by an explicit call to FREETMPS, or by an implicit call at places such as
+statement boundaries. See also C<sv_newmortal> and C<sv_mortalcopy>.
- void SvREFCNT_dec(SV* sv)
+ SV* sv_2mortal(SV* sv)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvREFCNT_inc
+=item sv_2nv
-Increments the reference count of the given SV.
+Return the num value of an SV, doing any necessary string or integer
+conversion, magic etc. Normally used via the C<SvNV(sv)> and C<SvNVx(sv)>
+macros.
- SV* SvREFCNT_inc(SV* sv)
+ NV sv_2nv(SV* sv)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvROK
+=item sv_2pvbyte
-Tests if the SV is an RV.
+Return a pointer to the byte-encoded representation of the SV, and set *lp
+to its length. May cause the SV to be downgraded from UTF8 as a
+side-effect.
- bool SvROK(SV* sv)
+Usually accessed via the C<SvPVbyte> macro.
+
+ char* sv_2pvbyte(SV* sv, STRLEN* lp)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvROK_off
+=item sv_2pvbyte_nolen
-Unsets the RV status of an SV.
+Return a pointer to the byte-encoded representation of the SV.
+May cause the SV to be downgraded from UTF8 as a side-effect.
- void SvROK_off(SV* sv)
+Usually accessed via the C<SvPVbyte_nolen> macro.
+
+ char* sv_2pvbyte_nolen(SV* sv)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvROK_on
+=item sv_2pvutf8
-Tells an SV that it is an RV.
+Return a pointer to the UTF8-encoded representation of the SV, and set *lp
+to its length. May cause the SV to be upgraded to UTF8 as a side-effect.
- void SvROK_on(SV* sv)
+Usually accessed via the C<SvPVutf8> macro.
+
+ char* sv_2pvutf8(SV* sv, STRLEN* lp)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvRV
+=item sv_2pvutf8_nolen
-Dereferences an RV to return the SV.
+Return a pointer to the UTF8-encoded representation of the SV.
+May cause the SV to be upgraded to UTF8 as a side-effect.
- SV* SvRV(SV* sv)
+Usually accessed via the C<SvPVutf8_nolen> macro.
+
+ char* sv_2pvutf8_nolen(SV* sv)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvSETMAGIC
+=item sv_2pv_flags
-Invokes C<mg_set> on an SV if it has 'set' magic. This macro evaluates its
-argument more than once.
+Returns a pointer to the string value of an SV, and sets *lp to its length.
+If flags includes SV_GMAGIC, does an mg_get() first. Coerces sv to a string
+if necessary.
+Normally invoked via the C<SvPV_flags> macro. C<sv_2pv()> and C<sv_2pv_nomg>
+usually end up here too.
- void SvSETMAGIC(SV* sv)
+ char* sv_2pv_flags(SV* sv, STRLEN* lp, I32 flags)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvSetSV
+=item sv_2pv_nolen
-Calls C<sv_setsv> if dsv is not the same as ssv. May evaluate arguments
-more than once.
+Like C<sv_2pv()>, but doesn't return the length too. You should usually
+use the macro wrapper C<SvPV_nolen(sv)> instead.
+ char* sv_2pv_nolen(SV* sv)
- void SvSetSV(SV* dsb, SV* ssv)
+=for hackers
+Found in file sv.c
+
+=item sv_2uv
+
+Return the unsigned integer value of an SV, doing any necessary string
+conversion, magic etc. Normally used via the C<SvUV(sv)> and C<SvUVx(sv)>
+macros.
+
+ UV sv_2uv(SV* sv)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvSetSV_nosteal
+=item sv_backoff
-Calls a non-destructive version of C<sv_setsv> if dsv is not the same as
-ssv. May evaluate arguments more than once.
+Remove any string offset. You should normally use the C<SvOOK_off> macro
+wrapper instead.
- void SvSetSV_nosteal(SV* dsv, SV* ssv)
+ int sv_backoff(SV* sv)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvSTASH
+=item sv_bless
-Returns the stash of the SV.
+Blesses an SV into a specified package. The SV must be an RV. The package
+must be designated by its stash (see C<gv_stashpv()>). The reference count
+of the SV is unaffected.
- HV* SvSTASH(SV* sv)
+ SV* sv_bless(SV* sv, HV* stash)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvTAINT
+=item sv_catpv
-Taints an SV if tainting is enabled
+Concatenates the string onto the end of the string which is in the SV.
+If the SV has the UTF8 status set, then the bytes appended should be
+valid UTF8. Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>.
- void SvTAINT(SV* sv)
+ void sv_catpv(SV* sv, const char* ptr)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvTAINTED
+=item sv_catpvf
-Checks to see if an SV is tainted. Returns TRUE if it is, FALSE if
-not.
+Processes its arguments like C<sprintf> and appends the formatted
+output to an SV. If the appended data contains "wide" characters
+(including, but not limited to, SVs with a UTF-8 PV formatted with %s,
+and characters >255 formatted with %c), the original SV might get
+upgraded to UTF-8. Handles 'get' magic, but not 'set' magic.
+C<SvSETMAGIC()> must typically be called after calling this function
+to handle 'set' magic.
- bool SvTAINTED(SV* sv)
+ void sv_catpvf(SV* sv, const char* pat, ...)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvTAINTED_off
+=item sv_catpvf_mg
-Untaints an SV. Be I<very> careful with this routine, as it short-circuits
-some of Perl's fundamental security features. XS module authors should not
-use this function unless they fully understand all the implications of
-unconditionally untainting the value. Untainting should be done in the
-standard perl fashion, via a carefully crafted regexp, rather than directly
-untainting variables.
+Like C<sv_catpvf>, but also handles 'set' magic.
- void SvTAINTED_off(SV* sv)
+ void sv_catpvf_mg(SV *sv, const char* pat, ...)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvTAINTED_on
+=item sv_catpvn
-Marks an SV as tainted.
+Concatenates the string onto the end of the string which is in the SV. The
+C<len> indicates number of bytes to copy. If the SV has the UTF8
+status set, then the bytes appended should be valid UTF8.
+Handles 'get' magic, but not 'set' magic. See C<sv_catpvn_mg>.
- void SvTAINTED_on(SV* sv)
+ void sv_catpvn(SV* sv, const char* ptr, STRLEN len)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvTRUE
+=item sv_catpvn_flags
-Returns a boolean indicating whether Perl would evaluate the SV as true or
-false, defined or undefined. Does not handle 'get' magic.
+Concatenates the string onto the end of the string which is in the SV. The
+C<len> indicates number of bytes to copy. If the SV has the UTF8
+status set, then the bytes appended should be valid UTF8.
+If C<flags> has C<SV_GMAGIC> bit set, will C<mg_get> on C<dsv> if
+appropriate, else not. C<sv_catpvn> and C<sv_catpvn_nomg> are implemented
+in terms of this function.
- bool SvTRUE(SV* sv)
+ void sv_catpvn_flags(SV* sv, const char* ptr, STRLEN len, I32 flags)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvTYPE
+=item sv_catpvn_mg
-Returns the type of the SV. See C<svtype>.
+Like C<sv_catpvn>, but also handles 'set' magic.
- svtype SvTYPE(SV* sv)
+ void sv_catpvn_mg(SV *sv, const char *ptr, STRLEN len)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item svtype
+=item sv_catpv_mg
-An enum of flags for Perl types. These are found in the file B<sv.h>
-in the C<svtype> enum. Test these flags with the C<SvTYPE> macro.
+Like C<sv_catpv>, but also handles 'set' magic.
+
+ void sv_catpv_mg(SV *sv, const char *ptr)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SVt_IV
+=item sv_catsv
-Integer type flag for scalars. See C<svtype>.
+Concatenates the string from SV C<ssv> onto the end of the string in
+SV C<dsv>. Modifies C<dsv> but not C<ssv>. Handles 'get' magic, but
+not 'set' magic. See C<sv_catsv_mg>.
+
+ void sv_catsv(SV* dsv, SV* ssv)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SVt_NV
+=item sv_catsv_flags
-Double type flag for scalars. See C<svtype>.
+Concatenates the string from SV C<ssv> onto the end of the string in
+SV C<dsv>. Modifies C<dsv> but not C<ssv>. If C<flags> has C<SV_GMAGIC>
+bit set, will C<mg_get> on the SVs if appropriate, else not. C<sv_catsv>
+and C<sv_catsv_nomg> are implemented in terms of this function.
+
+ void sv_catsv_flags(SV* dsv, SV* ssv, I32 flags)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SVt_PV
+=item sv_catsv_mg
-Pointer type flag for scalars. See C<svtype>.
+Like C<sv_catsv>, but also handles 'set' magic.
+
+ void sv_catsv_mg(SV *dstr, SV *sstr)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SVt_PVAV
+=item sv_chop
-Type flag for arrays. See C<svtype>.
+Efficient removal of characters from the beginning of the string buffer.
+SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside
+the string buffer. The C<ptr> becomes the first character of the adjusted
+string. Uses the "OOK hack".
+
+ void sv_chop(SV* sv, char* ptr)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SVt_PVCV
+=item sv_clear
-Type flag for code refs. See C<svtype>.
+Clear an SV: call any destructors, free up any memory used by the body,
+and free the body itself. The SV's head is I<not> freed, although
+its type is set to all 1's so that it won't inadvertently be assumed
+to be live during global destruction etc.
+This function should only be called when REFCNT is zero. Most of the time
+you'll want to call C<sv_free()> (or its macro wrapper C<SvREFCNT_dec>)
+instead.
+
+ void sv_clear(SV* sv)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SVt_PVHV
+=item sv_cmp
-Type flag for hashes. See C<svtype>.
+Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the
+string in C<sv1> is less than, equal to, or greater than the string in
+C<sv2>. Is UTF-8 and 'use bytes' aware, handles get magic, and will
+coerce its args to strings if necessary. See also C<sv_cmp_locale>.
+
+ I32 sv_cmp(SV* sv1, SV* sv2)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SVt_PVMG
+=item sv_cmp_locale
-Type flag for blessed scalars. See C<svtype>.
+Compares the strings in two SVs in a locale-aware manner. Is UTF-8 and
+'use bytes' aware, handles get magic, and will coerce its args to strings
+if necessary. See also C<sv_cmp_locale>. See also C<sv_cmp>.
+
+ I32 sv_cmp_locale(SV* sv1, SV* sv2)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvUOK
+=item sv_collxfrm
-Returns a boolean indicating whether the SV contains an unsigned integer.
+Add Collate Transform magic to an SV if it doesn't already have it.
- void SvUOK(SV* sv)
+Any scalar variable may carry PERL_MAGIC_collxfrm magic that contains the
+scalar data of the variable, but transformed to such a format that a normal
+memory comparison can be used to compare the data according to the locale
+settings.
+
+ char* sv_collxfrm(SV* sv, STRLEN* nxp)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvUPGRADE
+=item sv_copypv
-Used to upgrade an SV to a more complex form. Uses C<sv_upgrade> to
-perform the upgrade if necessary. See C<svtype>.
+Copies a stringified representation of the source SV into the
+destination SV. Automatically performs any necessary mg_get and
+coercion of numeric values into strings. Guaranteed to preserve
+UTF-8 flag even from overloaded objects. Similar in nature to
+sv_2pv[_flags] but operates directly on an SV instead of just the
+string. Mostly uses sv_2pv_flags to do its work, except when that
+would lose the UTF-8'ness of the PV.
- void SvUPGRADE(SV* sv, svtype type)
+ void sv_copypv(SV* dsv, SV* ssv)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvUTF8
+=item sv_dec
-Returns a boolean indicating whether the SV contains UTF-8 encoded data.
+Auto-decrement of the value in the SV, doing string to numeric conversion
+if necessary. Handles 'get' magic.
- void SvUTF8(SV* sv)
+ void sv_dec(SV* sv)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvUTF8_off
+=item sv_derived_from
-Unsets the UTF8 status of an SV.
+Returns a boolean indicating whether the SV is derived from the specified
+class. This is the function that implements C<UNIVERSAL::isa>. It works
+for class names as well as for objects.
- void SvUTF8_off(SV *sv)
+ bool sv_derived_from(SV* sv, const char* name)
=for hackers
-Found in file sv.h
+Found in file universal.c
-=item SvUTF8_on
+=item sv_eq
-Tells an SV that it is a string and encoded in UTF8. Do not use frivolously.
+Returns a boolean indicating whether the strings in the two SVs are
+identical. Is UTF-8 and 'use bytes' aware, handles get magic, and will
+coerce its args to strings if necessary.
- void SvUTF8_on(SV *sv)
+ I32 sv_eq(SV* sv1, SV* sv2)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvUV
+=item sv_force_normal
-Coerces the given SV to an unsigned integer and returns it.
+Undo various types of fakery on an SV: if the PV is a shared string, make
+a private copy; if we're a ref, stop refing; if we're a glob, downgrade to
+an xpvmg. See also C<sv_force_normal_flags>.
- UV SvUV(SV* sv)
+ void sv_force_normal(SV *sv)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item SvUVX
+=item sv_force_normal_flags
-Returns the unsigned integer which is stored in the SV, assuming SvIOK is
-true.
+Undo various types of fakery on an SV: if the PV is a shared string, make
+a private copy; if we're a ref, stop refing; if we're a glob, downgrade to
+an xpvmg. The C<flags> parameter gets passed to C<sv_unref_flags()>
+when unrefing. C<sv_force_normal> calls this function with flags set to 0.
- UV SvUVX(SV* sv)
+ void sv_force_normal_flags(SV *sv, U32 flags)
=for hackers
-Found in file sv.h
+Found in file sv.c
-=item sv_2mortal
+=item sv_free
-Marks an SV as mortal. The SV will be destroyed when the current context
-ends.
+Decrement an SV's reference count, and if it drops to zero, call
+C<sv_clear> to invoke destructors and free up any memory used by
+the body; finally, deallocate the SV's head itself.
+Normally called via a wrapper macro C<SvREFCNT_dec>.
- SV* sv_2mortal(SV* sv)
+ void sv_free(SV* sv)
=for hackers
Found in file sv.c
-=item sv_bless
+=item sv_gets
-Blesses an SV into a specified package. The SV must be an RV. The package
-must be designated by its stash (see C<gv_stashpv()>). The reference count
-of the SV is unaffected.
+Get a line from the filehandle and store it into the SV, optionally
+appending to the currently-stored string.
- SV* sv_bless(SV* sv, HV* stash)
+ char* sv_gets(SV* sv, PerlIO* fp, I32 append)
=for hackers
Found in file sv.c
-=item sv_catpv
+=item sv_grow
-Concatenates the string onto the end of the string which is in the SV.
-Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>.
+Expands the character buffer in the SV. If necessary, uses C<sv_unref> and
+upgrades the SV to C<SVt_PV>. Returns a pointer to the character buffer.
+Use the C<SvGROW> wrapper instead.
- void sv_catpv(SV* sv, const char* ptr)
+ char* sv_grow(SV* sv, STRLEN newlen)
=for hackers
Found in file sv.c
-=item sv_catpvf
+=item sv_inc
-Processes its arguments like C<sprintf> and appends the formatted output
-to an SV. Handles 'get' magic, but not 'set' magic. C<SvSETMAGIC()> must
-typically be called after calling this function to handle 'set' magic.
+Auto-increment of the value in the SV, doing string to numeric conversion
+if necessary. Handles 'get' magic.
- void sv_catpvf(SV* sv, const char* pat, ...)
+ void sv_inc(SV* sv)
=for hackers
Found in file sv.c
-=item sv_catpvf_mg
+=item sv_insert
-Like C<sv_catpvf>, but also handles 'set' magic.
+Inserts a string at the specified offset/length within the SV. Similar to
+the Perl substr() function.
- void sv_catpvf_mg(SV *sv, const char* pat, ...)
+ void sv_insert(SV* bigsv, STRLEN offset, STRLEN len, char* little, STRLEN littlelen)
=for hackers
Found in file sv.c
-=item sv_catpvn
+=item sv_isa
-Concatenates the string onto the end of the string which is in the SV. The
-C<len> indicates number of bytes to copy. Handles 'get' magic, but not
-'set' magic. See C<sv_catpvn_mg>.
+Returns a boolean indicating whether the SV is blessed into the specified
+class. This does not check for subtypes; use C<sv_derived_from> to verify
+an inheritance relationship.
- void sv_catpvn(SV* sv, const char* ptr, STRLEN len)
+ int sv_isa(SV* sv, const char* name)
=for hackers
Found in file sv.c
-=item sv_catpvn_mg
+=item sv_isobject
-Like C<sv_catpvn>, but also handles 'set' magic.
+Returns a boolean indicating whether the SV is an RV pointing to a blessed
+object. If the SV is not an RV, or if the object is not blessed, then this
+will return false.
- void sv_catpvn_mg(SV *sv, const char *ptr, STRLEN len)
+ int sv_isobject(SV* sv)
=for hackers
Found in file sv.c
-=item sv_catpv_mg
+=item sv_iv
-Like C<sv_catpv>, but also handles 'set' magic.
+A private implementation of the C<SvIVx> macro for compilers which can't
+cope with complex macro expressions. Always use the macro instead.
- void sv_catpv_mg(SV *sv, const char *ptr)
+ IV sv_iv(SV* sv)
=for hackers
Found in file sv.c
-=item sv_catsv
+=item sv_len
-Concatenates the string from SV C<ssv> onto the end of the string in
-SV C<dsv>. Modifies C<dsv> but not C<ssv>. Handles 'get' magic, but
-not 'set' magic. See C<sv_catsv_mg>.
+Returns the length of the string in the SV. Handles magic and type
+coercion. See also C<SvCUR>, which gives raw access to the xpv_cur slot.
- void sv_catsv(SV* dsv, SV* ssv)
+ STRLEN sv_len(SV* sv)
=for hackers
Found in file sv.c
-=item sv_catsv_mg
+=item sv_len_utf8
-Like C<sv_catsv>, but also handles 'set' magic.
+Returns the number of characters in the string in an SV, counting wide
+UTF8 bytes as a single character. Handles magic and type coercion.
- void sv_catsv_mg(SV *dstr, SV *sstr)
+ STRLEN sv_len_utf8(SV* sv)
=for hackers
Found in file sv.c
-=item sv_chop
+=item sv_magic
-Efficient removal of characters from the beginning of the string buffer.
-SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside
-the string buffer. The C<ptr> becomes the first character of the adjusted
-string.
+Adds magic to an SV. First upgrades C<sv> to type C<SVt_PVMG> if necessary,
+then adds a new magic item of type C<how> to the head of the magic list.
- void sv_chop(SV* sv, char* ptr)
+ void sv_magic(SV* sv, SV* obj, int how, const char* name, I32 namlen)
=for hackers
Found in file sv.c
-=item sv_clear
+=item sv_magicext
-Clear an SV, making it empty. Does not free the memory used by the SV
-itself.
+Adds magic to an SV, upgrading it if necessary. Applies the
+supplied vtable and returns pointer to the magic added.
- void sv_clear(SV* sv)
+Note that sv_magicext will allow things that sv_magic will not.
+In particular you can add magic to SvREADONLY SVs and and more than
+one instance of the same 'how'
+
+I C<namelen> is greater then zero then a savepvn() I<copy> of C<name> is stored,
+if C<namelen> is zero then C<name> is stored as-is and - as another special
+case - if C<(name && namelen == HEf_SVKEY)> then C<name> is assumed to contain
+an C<SV*> and has its REFCNT incremented
+
+(This is now used as a subroutine by sv_magic.)
+
+ MAGIC * sv_magicext(SV* sv, SV* obj, int how, MGVTBL *vtbl, const char* name, I32 namlen )
=for hackers
Found in file sv.c
-=item sv_cmp
+=item sv_mortalcopy
-Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the
-string in C<sv1> is less than, equal to, or greater than the string in
-C<sv2>.
+Creates a new SV which is a copy of the original SV (using C<sv_setsv>).
+The new SV is marked as mortal. It will be destroyed "soon", either by an
+explicit call to FREETMPS, or by an implicit call at places such as
+statement boundaries. See also C<sv_newmortal> and C<sv_2mortal>.
- I32 sv_cmp(SV* sv1, SV* sv2)
+ SV* sv_mortalcopy(SV* oldsv)
=for hackers
Found in file sv.c
-=item sv_cmp_locale
+=item sv_newmortal
-Compares the strings in two SVs in a locale-aware manner. See
-L</sv_cmp_locale>
+Creates a new null SV which is mortal. The reference count of the SV is
+set to 1. It will be destroyed "soon", either by an explicit call to
+FREETMPS, or by an implicit call at places such as statement boundaries.
+See also C<sv_mortalcopy> and C<sv_2mortal>.
- I32 sv_cmp_locale(SV* sv1, SV* sv2)
+ SV* sv_newmortal()
=for hackers
Found in file sv.c
-=item sv_dec
+=item sv_newref
-Auto-decrement of the value in the SV.
+Increment an SV's reference count. Use the C<SvREFCNT_inc()> wrapper
+instead.
- void sv_dec(SV* sv)
+ SV* sv_newref(SV* sv)
=for hackers
Found in file sv.c
-=item sv_derived_from
+=item sv_nolocking
-Returns a boolean indicating whether the SV is derived from the specified
-class. This is the function that implements C<UNIVERSAL::isa>. It works
-for class names as well as for objects.
+Dummy routine which "locks" an SV when there is no locking module present.
+Exists to avoid test for a NULL function pointer and because it could potentially warn under
+some level of strict-ness.
- bool sv_derived_from(SV* sv, const char* name)
+ void sv_nolocking(SV *)
=for hackers
-Found in file universal.c
+Found in file util.c
-=item sv_eq
+=item sv_nosharing
-Returns a boolean indicating whether the strings in the two SVs are
-identical.
+Dummy routine which "shares" an SV when there is no sharing module present.
+Exists to avoid test for a NULL function pointer and because it could potentially warn under
+some level of strict-ness.
- I32 sv_eq(SV* sv1, SV* sv2)
+ void sv_nosharing(SV *)
=for hackers
-Found in file sv.c
+Found in file util.c
-=item sv_free
+=item sv_nounlocking
-Free the memory used by an SV.
+Dummy routine which "unlocks" an SV when there is no locking module present.
+Exists to avoid test for a NULL function pointer and because it could potentially warn under
+some level of strict-ness.
- void sv_free(SV* sv)
+ void sv_nounlocking(SV *)
=for hackers
-Found in file sv.c
+Found in file util.c
-=item sv_gets
+=item sv_nv
-Get a line from the filehandle and store it into the SV, optionally
-appending to the currently-stored string.
+A private implementation of the C<SvNVx> macro for compilers which can't
+cope with complex macro expressions. Always use the macro instead.
- char* sv_gets(SV* sv, PerlIO* fp, I32 append)
+ NV sv_nv(SV* sv)
=for hackers
Found in file sv.c
-=item sv_grow
+=item sv_pos_b2u
-Expands the character buffer in the SV. This will use C<sv_unref> and will
-upgrade the SV to C<SVt_PV>. Returns a pointer to the character buffer.
-Use C<SvGROW>.
+Converts the value pointed to by offsetp from a count of bytes from the
+start of the string, to a count of the equivalent number of UTF8 chars.
+Handles magic and type coercion.
- char* sv_grow(SV* sv, STRLEN newlen)
+ void sv_pos_b2u(SV* sv, I32* offsetp)
=for hackers
Found in file sv.c
-=item sv_inc
+=item sv_pos_u2b
-Auto-increment of the value in the SV.
+Converts the value pointed to by offsetp from a count of UTF8 chars from
+the start of the string, to a count of the equivalent number of bytes; if
+lenp is non-zero, it does the same to lenp, but this time starting from
+the offset, rather than from the start of the string. Handles magic and
+type coercion.
- void sv_inc(SV* sv)
+ void sv_pos_u2b(SV* sv, I32* offsetp, I32* lenp)
=for hackers
Found in file sv.c
-=item sv_insert
+=item sv_pv
-Inserts a string at the specified offset/length within the SV. Similar to
-the Perl substr() function.
+Use the C<SvPV_nolen> macro instead
- void sv_insert(SV* bigsv, STRLEN offset, STRLEN len, char* little, STRLEN littlelen)
+ char* sv_pv(SV *sv)
=for hackers
Found in file sv.c
-=item sv_isa
+=item sv_pvbyte
-Returns a boolean indicating whether the SV is blessed into the specified
-class. This does not check for subtypes; use C<sv_derived_from> to verify
-an inheritance relationship.
+Use C<SvPVbyte_nolen> instead.
- int sv_isa(SV* sv, const char* name)
+ char* sv_pvbyte(SV *sv)
=for hackers
Found in file sv.c
-=item sv_isobject
+=item sv_pvbyten
-Returns a boolean indicating whether the SV is an RV pointing to a blessed
-object. If the SV is not an RV, or if the object is not blessed, then this
-will return false.
+A private implementation of the C<SvPVbyte> macro for compilers
+which can't cope with complex macro expressions. Always use the macro
+instead.
- int sv_isobject(SV* sv)
+ char* sv_pvbyten(SV *sv, STRLEN *len)
=for hackers
Found in file sv.c
-=item sv_len
+=item sv_pvbyten_force
-Returns the length of the string in the SV. See also C<SvCUR>.
+A private implementation of the C<SvPVbytex_force> macro for compilers
+which can't cope with complex macro expressions. Always use the macro
+instead.
- STRLEN sv_len(SV* sv)
+ char* sv_pvbyten_force(SV* sv, STRLEN* lp)
=for hackers
Found in file sv.c
-=item sv_len_utf8
+=item sv_pvn
-Returns the number of characters in the string in an SV, counting wide
-UTF8 bytes as a single character.
+A private implementation of the C<SvPV> macro for compilers which can't
+cope with complex macro expressions. Always use the macro instead.
- STRLEN sv_len_utf8(SV* sv)
+ char* sv_pvn(SV *sv, STRLEN *len)
=for hackers
Found in file sv.c
-=item sv_magic
+=item sv_pvn_force
-Adds magic to an SV.
+Get a sensible string out of the SV somehow.
+A private implementation of the C<SvPV_force> macro for compilers which
+can't cope with complex macro expressions. Always use the macro instead.
- void sv_magic(SV* sv, SV* obj, int how, const char* name, I32 namlen)
+ char* sv_pvn_force(SV* sv, STRLEN* lp)
=for hackers
Found in file sv.c
-=item sv_mortalcopy
+=item sv_pvn_force_flags
-Creates a new SV which is a copy of the original SV. The new SV is marked
-as mortal.
+Get a sensible string out of the SV somehow.
+If C<flags> has C<SV_GMAGIC> bit set, will C<mg_get> on C<sv> if
+appropriate, else not. C<sv_pvn_force> and C<sv_pvn_force_nomg> are
+implemented in terms of this function.
+You normally want to use the various wrapper macros instead: see
+C<SvPV_force> and C<SvPV_force_nomg>
- SV* sv_mortalcopy(SV* oldsv)
+ char* sv_pvn_force_flags(SV* sv, STRLEN* lp, I32 flags)
=for hackers
Found in file sv.c
-=item sv_newmortal
+=item sv_pvutf8
-Creates a new SV which is mortal. The reference count of the SV is set to 1.
+Use the C<SvPVutf8_nolen> macro instead
- SV* sv_newmortal()
+ char* sv_pvutf8(SV *sv)
=for hackers
Found in file sv.c
-=item sv_pvn_force
+=item sv_pvutf8n
-Get a sensible string out of the SV somehow.
+A private implementation of the C<SvPVutf8> macro for compilers
+which can't cope with complex macro expressions. Always use the macro
+instead.
- char* sv_pvn_force(SV* sv, STRLEN* lp)
+ char* sv_pvutf8n(SV *sv, STRLEN *len)
=for hackers
Found in file sv.c
=item sv_pvutf8n_force
-Get a sensible UTF8-encoded string out of the SV somehow. See
-L</sv_pvn_force>.
+A private implementation of the C<SvPVutf8_force> macro for compilers
+which can't cope with complex macro expressions. Always use the macro
+instead.
char* sv_pvutf8n_force(SV* sv, STRLEN* lp)
=item sv_replace
Make the first argument a copy of the second, then delete the original.
+The target SV physically takes over ownership of the body of the source SV
+and inherits its flags; however, the target keeps any magic it owns,
+and any magic in the source is discarded.
+Note that this is a rather specialist SV copying operation; most of the
+time you'll want to use C<sv_setsv> or one of its many macro front-ends.
void sv_replace(SV* sv, SV* nsv)
=for hackers
Found in file sv.c
+=item sv_report_used
+
+Dump the contents of all SVs not yet freed. (Debugging aid).
+
+ void sv_report_used()
+
+=for hackers
+Found in file sv.c
+
+=item sv_reset
+
+Underlying implementation for the C<reset> Perl function.
+Note that the perl-level function is vaguely deprecated.
+
+ void sv_reset(char* s, HV* stash)
+
+=for hackers
+Found in file sv.c
+
=item sv_rvweaken
-Weaken a reference.
+Weaken a reference: set the C<SvWEAKREF> flag on this RV; give the
+referred-to SV C<PERL_MAGIC_backref> magic if it hasn't already; and
+push a back-reference to this RV onto the array of backreferences
+associated with that magic.
SV* sv_rvweaken(SV *sv)
=item sv_setiv
-Copies an integer into the given SV. Does not handle 'set' magic. See
-C<sv_setiv_mg>.
+Copies an integer into the given SV, upgrading first if necessary.
+Does not handle 'set' magic. See also C<sv_setiv_mg>.
void sv_setiv(SV* sv, IV num)
=item sv_setnv
-Copies a double into the given SV. Does not handle 'set' magic. See
-C<sv_setnv_mg>.
+Copies a double into the given SV, upgrading first if necessary.
+Does not handle 'set' magic. See also C<sv_setnv_mg>.
void sv_setnv(SV* sv, NV num)
=for hackers
Found in file sv.c
+=item sv_setref_uv
+
+Copies an unsigned integer into a new SV, optionally blessing the SV. The C<rv>
+argument will be upgraded to an RV. That RV will be modified to point to
+the new SV. The C<classname> argument indicates the package for the
+blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
+will be returned and will have a reference count of 1.
+
+ SV* sv_setref_uv(SV* rv, const char* classname, UV uv)
+
+=for hackers
+Found in file sv.c
+
=item sv_setsv
-Copies the contents of the source SV C<ssv> into the destination SV C<dsv>.
-The source SV may be destroyed if it is mortal. Does not handle 'set'
-magic. See the macro forms C<SvSetSV>, C<SvSetSV_nosteal> and
-C<sv_setsv_mg>.
+Copies the contents of the source SV C<ssv> into the destination SV
+C<dsv>. The source SV may be destroyed if it is mortal, so don't use this
+function if the source SV needs to be reused. Does not handle 'set' magic.
+Loosely speaking, it performs a copy-by-value, obliterating any previous
+content of the destination.
+
+You probably want to use one of the assortment of wrappers, such as
+C<SvSetSV>, C<SvSetSV_nosteal>, C<SvSetMagicSV> and
+C<SvSetMagicSV_nosteal>.
+
void sv_setsv(SV* dsv, SV* ssv)
=for hackers
Found in file sv.c
+=item sv_setsv_flags
+
+Copies the contents of the source SV C<ssv> into the destination SV
+C<dsv>. The source SV may be destroyed if it is mortal, so don't use this
+function if the source SV needs to be reused. Does not handle 'set' magic.
+Loosely speaking, it performs a copy-by-value, obliterating any previous
+content of the destination.
+If the C<flags> parameter has the C<SV_GMAGIC> bit set, will C<mg_get> on
+C<ssv> if appropriate, else not. C<sv_setsv> and C<sv_setsv_nomg> are
+implemented in terms of this function.
+
+You probably want to use one of the assortment of wrappers, such as
+C<SvSetSV>, C<SvSetSV_nosteal>, C<SvSetMagicSV> and
+C<SvSetMagicSV_nosteal>.
+
+This is the primary function for copying scalars, and most other
+copy-ish functions and macros use this underneath.
+
+ void sv_setsv_flags(SV* dsv, SV* ssv, I32 flags)
+
+=for hackers
+Found in file sv.c
+
=item sv_setsv_mg
Like C<sv_setsv>, but also handles 'set' magic.
=item sv_setuv
-Copies an unsigned integer into the given SV. Does not handle 'set' magic.
-See C<sv_setuv_mg>.
+Copies an unsigned integer into the given SV, upgrading first if necessary.
+Does not handle 'set' magic. See also C<sv_setuv_mg>.
void sv_setuv(SV* sv, UV num)
=for hackers
Found in file sv.c
+=item sv_taint
+
+Taint an SV. Use C<SvTAINTED_on> instead.
+ void sv_taint(SV* sv)
+
+=for hackers
+Found in file sv.c
+
+=item sv_tainted
+
+Test an SV for taintedness. Use C<SvTAINTED> instead.
+ bool sv_tainted(SV* sv)
+
+=for hackers
+Found in file sv.c
+
=item sv_true
Returns true if the SV has a true value by Perl's rules.
+Use the C<SvTRUE> macro instead, which may call C<sv_true()> or may
+instead use an in-line version.
I32 sv_true(SV *sv)
=item sv_unmagic
-Removes magic from an SV.
+Removes all magic of type C<type> from an SV.
int sv_unmagic(SV* sv, int type)
=for hackers
Found in file sv.c
+=item sv_untaint
+
+Untaint an SV. Use C<SvTAINTED_off> instead.
+ void sv_untaint(SV* sv)
+
+=for hackers
+Found in file sv.c
+
=item sv_upgrade
-Upgrade an SV to a more complex form. Use C<SvUPGRADE>. See
-C<svtype>.
+Upgrade an SV to a more complex form. Generally adds a new body type to the
+SV, then copies across as much information as possible from the old body.
+You generally want to use the C<SvUPGRADE> macro wrapper. See also C<svtype>.
bool sv_upgrade(SV* sv, U32 mt)
=for hackers
Found in file sv.c
+=item sv_utf8_decode
+
+Convert the octets in the PV from UTF-8 to chars. Scan for validity and then
+turn off SvUTF8 if needed so that we see characters. Used as a building block
+for decode_utf8 in Encode.xs
+
+NOTE: this function is experimental and may change or be
+removed without notice.
+
+ bool sv_utf8_decode(SV *sv)
+
+=for hackers
+Found in file sv.c
+
=item sv_utf8_downgrade
Attempt to convert the PV of an SV from UTF8-encoded to byte encoding.
if this is the case, either returns false or, if C<fail_ok> is not
true, croaks.
+This is not as a general purpose Unicode to byte encoding interface:
+use the Encode extension for that.
+
NOTE: this function is experimental and may change or be
removed without notice.
=item sv_utf8_encode
Convert the PV of an SV to UTF8-encoded, but then turn off the C<SvUTF8>
-flag so that it looks like bytes again. Nothing calls this.
-
-NOTE: this function is experimental and may change or be
-removed without notice.
+flag so that it looks like octets again. Used as a building block
+for encode_utf8 in Encode.xs
void sv_utf8_encode(SV *sv)
=item sv_utf8_upgrade
Convert the PV of an SV to its UTF8-encoded form.
+Forces the SV to string form if it is not already.
+Always sets the SvUTF8 flag to avoid future validity checks even
+if all the bytes have hibit clear.
+
+This is not as a general purpose byte encoding to Unicode interface:
+use the Encode extension for that.
+
+ STRLEN sv_utf8_upgrade(SV *sv)
+
+=for hackers
+Found in file sv.c
+
+=item sv_utf8_upgrade_flags
+
+Convert the PV of an SV to its UTF8-encoded form.
+Forces the SV to string form if it is not already.
+Always sets the SvUTF8 flag to avoid future validity checks even
+if all the bytes have hibit clear. If C<flags> has C<SV_GMAGIC> bit set,
+will C<mg_get> on C<sv> if appropriate, else not. C<sv_utf8_upgrade> and
+C<sv_utf8_upgrade_nomg> are implemented in terms of this function.
+
+This is not as a general purpose byte encoding to Unicode interface:
+use the Encode extension for that.
+
+ STRLEN sv_utf8_upgrade_flags(SV *sv, I32 flags)
+
+=for hackers
+Found in file sv.c
+
+=item sv_uv
+
+A private implementation of the C<SvUVx> macro for compilers which can't
+cope with complex macro expressions. Always use the macro instead.
- void sv_utf8_upgrade(SV *sv)
+ UV sv_uv(SV* sv)
=for hackers
Found in file sv.c
=item sv_vcatpvfn
-Processes its arguments like C<vsprintf> and appends the formatted output
-to an SV. Uses an array of SVs if the C style variable argument list is
-missing (NULL). When running with taint checks enabled, indicates via
-C<maybe_tainted> if results are untrustworthy (often due to the use of
-locales).
+Processes its arguments like C<vsprintf> and appends the formatted output
+to an SV. Uses an array of SVs if the C style variable argument list is
+missing (NULL). When running with taint checks enabled, indicates via
+C<maybe_tainted> if results are untrustworthy (often due to the use of
+locales).
+
+Usually used via one of its frontends C<sv_catpvf> and C<sv_catpvf_mg>.
+
+ void sv_vcatpvfn(SV* sv, const char* pat, STRLEN patlen, va_list* args, SV** svargs, I32 svmax, bool *maybe_tainted)
+
+=for hackers
+Found in file sv.c
+
+=item sv_vsetpvfn
+
+Works like C<vcatpvfn> but copies the text into the SV instead of
+appending it.
+
+Usually used via one of its frontends C<sv_setpvf> and C<sv_setpvf_mg>.
+
+ void sv_vsetpvfn(SV* sv, const char* pat, STRLEN patlen, va_list* args, SV** svargs, I32 svmax, bool *maybe_tainted)
+
+=for hackers
+Found in file sv.c
+
+
+=back
+
+=head1 Unicode Support
+
+=over 8
+
+=item bytes_from_utf8
+
+Converts a string C<s> of length C<len> from UTF8 into byte encoding.
+Unlike <utf8_to_bytes> but like C<bytes_to_utf8>, returns a pointer to
+the newly-created string, and updates C<len> to contain the new
+length. Returns the original string if no conversion occurs, C<len>
+is unchanged. Do nothing if C<is_utf8> points to 0. Sets C<is_utf8> to
+0 if C<s> is converted or contains all 7bit characters.
+
+NOTE: this function is experimental and may change or be
+removed without notice.
+
+ U8* bytes_from_utf8(U8 *s, STRLEN *len, bool *is_utf8)
+
+=for hackers
+Found in file utf8.c
+
+=item bytes_to_utf8
+
+Converts a string C<s> of length C<len> from ASCII into UTF8 encoding.
+Returns a pointer to the newly-created string, and sets C<len> to
+reflect the new length.
+
+NOTE: this function is experimental and may change or be
+removed without notice.
+
+ U8* bytes_to_utf8(U8 *s, STRLEN *len)
+
+=for hackers
+Found in file utf8.c
+
+=item ibcmp_utf8
+
+Return true if the strings s1 and s2 differ case-insensitively, false
+if not (if they are equal case-insensitively). If u1 is true, the
+string s1 is assumed to be in UTF-8-encoded Unicode. If u2 is true,
+the string s2 is assumed to be in UTF-8-encoded Unicode. If u1 or u2
+are false, the respective string is assumed to be in native 8-bit
+encoding.
+
+If the pe1 and pe2 are non-NULL, the scanning pointers will be copied
+in there (they will point at the beginning of the I<next> character).
+If the pointers behind pe1 or pe2 are non-NULL, they are the end
+pointers beyond which scanning will not continue under any
+circustances. If the byte lengths l1 and l2 are non-zero, s1+l1 and
+s2+l2 will be used as goal end pointers that will also stop the scan,
+and which qualify towards defining a successful match: all the scans
+that define an explicit length must reach their goal pointers for
+a match to succeed).
+
+For case-insensitiveness, the "casefolding" of Unicode is used
+instead of upper/lowercasing both the characters, see
+http://www.unicode.org/unicode/reports/tr21/ (Case Mappings).
+
+ I32 ibcmp_utf8(const char* a, char **pe1, UV l1, bool u1, const char* b, char **pe2, UV l2, bool u2)
+
+=for hackers
+Found in file utf8.c
+
+=item is_utf8_char
+
+Tests if some arbitrary number of bytes begins in a valid UTF-8
+character. Note that an INVARIANT (i.e. ASCII) character is a valid UTF-8 character.
+The actual number of bytes in the UTF-8 character will be returned if
+it is valid, otherwise 0.
+
+ STRLEN is_utf8_char(U8 *p)
+
+=for hackers
+Found in file utf8.c
+
+=item is_utf8_string
+
+Returns true if first C<len> bytes of the given string form a valid UTF8
+string, false otherwise. Note that 'a valid UTF8 string' does not mean
+'a string that contains UTF8' because a valid ASCII string is a valid
+UTF8 string.
+
+ bool is_utf8_string(U8 *s, STRLEN len)
+
+=for hackers
+Found in file utf8.c
+
+=item pv_uni_display
+
+Build to the scalar dsv a displayable version of the string spv,
+length len, the displayable version being at most pvlim bytes long
+(if longer, the rest is truncated and "..." will be appended).
+
+The flags argument can have UNI_DISPLAY_ISPRINT set to display
+isPRINT()able characters as themselves, UNI_DISPLAY_BACKSLASH
+to display the \\[nrfta\\] as the backslashed versions (like '\n')
+(UNI_DISPLAY_BACKSLASH is preferred over UNI_DISPLAY_ISPRINT for \\).
+UNI_DISPLAY_QQ (and its alias UNI_DISPLAY_REGEX) have both
+UNI_DISPLAY_BACKSLASH and UNI_DISPLAY_ISPRINT turned on.
+
+The pointer to the PV of the dsv is returned.
+
+ char* pv_uni_display(SV *dsv, U8 *spv, STRLEN len, STRLEN pvlim, UV flags)
+
+=for hackers
+Found in file utf8.c
+
+=item sv_recode_to_utf8
+
+The encoding is assumed to be an Encode object, on entry the PV
+of the sv is assumed to be octets in that encoding, and the sv
+will be converted into Unicode (and UTF-8).
+
+If the sv already is UTF-8 (or if it is not POK), or if the encoding
+is not a reference, nothing is done to the sv. If the encoding is not
+an C<Encode::XS> Encoding object, bad things will happen.
+(See F<lib/encoding.pm> and L<Encode>).
+
+The PV of the sv is returned.
+
+ char* sv_recode_to_utf8(SV* sv, SV *encoding)
+
+=for hackers
+Found in file sv.c
+
+=item sv_uni_display
+
+Build to the scalar dsv a displayable version of the scalar sv,
+the displayable version being at most pvlim bytes long
+(if longer, the rest is truncated and "..." will be appended).
+
+The flags argument is as in pv_uni_display().
+
+The pointer to the PV of the dsv is returned.
+
+ char* sv_uni_display(SV *dsv, SV *ssv, STRLEN pvlim, UV flags)
+
+=for hackers
+Found in file utf8.c
+
+=item to_utf8_case
+
+The "p" contains the pointer to the UTF-8 string encoding
+the character that is being converted.
+
+The "ustrp" is a pointer to the character buffer to put the
+conversion result to. The "lenp" is a pointer to the length
+of the result.
+
+The "swashp" is a pointer to the swash to use.
+
+Both the special and normal mappings are stored lib/unicore/To/Foo.pl,
+and loaded by SWASHGET, using lib/utf8_heavy.pl. The special (usually,
+but not always, a multicharacter mapping), is tried first.
+
+The "special" is a string like "utf8::ToSpecLower", which means the
+hash %utf8::ToSpecLower. The access to the hash is through
+Perl_to_utf8_case().
+
+The "normal" is a string like "ToLower" which means the swash
+%utf8::ToLower.
+
+ UV to_utf8_case(U8 *p, U8* ustrp, STRLEN *lenp, SV **swash, char *normal, char *special)
+
+=for hackers
+Found in file utf8.c
+
+=item to_utf8_fold
+
+Convert the UTF-8 encoded character at p to its foldcase version and
+store that in UTF-8 in ustrp and its length in bytes in lenp. Note
+that the ustrp needs to be at least UTF8_MAXLEN_FOLD+1 bytes since the
+foldcase version may be longer than the original character (up to
+three characters).
+
+The first character of the foldcased version is returned
+(but note, as explained above, that there may be more.)
+
+ UV to_utf8_fold(U8 *p, U8* ustrp, STRLEN *lenp)
+
+=for hackers
+Found in file utf8.c
+
+=item to_utf8_lower
+
+Convert the UTF-8 encoded character at p to its lowercase version and
+store that in UTF-8 in ustrp and its length in bytes in lenp. Note
+that the ustrp needs to be at least UTF8_MAXLEN_UCLC+1 bytes since the
+lowercase version may be longer than the original character (up to two
+characters).
+
+The first character of the lowercased version is returned
+(but note, as explained above, that there may be more.)
- void sv_vcatpvfn(SV* sv, const char* pat, STRLEN patlen, va_list* args, SV** svargs, I32 svmax, bool *maybe_tainted)
+ UV to_utf8_lower(U8 *p, U8* ustrp, STRLEN *lenp)
=for hackers
-Found in file sv.c
+Found in file utf8.c
-=item sv_vsetpvfn
+=item to_utf8_title
-Works like C<vcatpvfn> but copies the text into the SV instead of
-appending it.
+Convert the UTF-8 encoded character at p to its titlecase version and
+store that in UTF-8 in ustrp and its length in bytes in lenp. Note
+that the ustrp needs to be at least UTF8_MAXLEN_UCLC+1 bytes since the
+titlecase version may be longer than the original character (up to two
+characters).
- void sv_vsetpvfn(SV* sv, const char* pat, STRLEN patlen, va_list* args, SV** svargs, I32 svmax, bool *maybe_tainted)
+The first character of the titlecased version is returned
+(but note, as explained above, that there may be more.)
+
+ UV to_utf8_title(U8 *p, U8* ustrp, STRLEN *lenp)
=for hackers
-Found in file sv.c
+Found in file utf8.c
-=item THIS
+=item to_utf8_upper
-Variable which is setup by C<xsubpp> to designate the object in a C++
-XSUB. This is always the proper type for the C++ object. See C<CLASS> and
-L<perlxs/"Using XS With C++">.
+Convert the UTF-8 encoded character at p to its uppercase version and
+store that in UTF-8 in ustrp and its length in bytes in lenp. Note
+that the ustrp needs to be at least UTF8_MAXLEN_UCLC+1 bytes since the
+uppercase version may be longer than the original character (up to two
+characters).
- (whatever) THIS
+The first character of the uppercased version is returned
+(but note, as explained above, that there may be more.)
+
+ UV to_utf8_upper(U8 *p, U8* ustrp, STRLEN *lenp)
=for hackers
-Found in file XSUB.h
+Found in file utf8.c
-=item toLOWER
+=item utf8n_to_uvchr
-Converts the specified character to lowercase.
+Returns the native character value of the first character in the string C<s>
+which is assumed to be in UTF8 encoding; C<retlen> will be set to the
+length, in bytes, of that character.
- char toLOWER(char ch)
+Allows length and flags to be passed to low level routine.
+
+ UV utf8n_to_uvchr(U8 *s, STRLEN curlen, STRLEN* retlen, U32 flags)
=for hackers
-Found in file handy.h
+Found in file utf8.c
-=item toUPPER
+=item utf8n_to_uvuni
-Converts the specified character to uppercase.
+Bottom level UTF-8 decode routine.
+Returns the unicode code point value of the first character in the string C<s>
+which is assumed to be in UTF8 encoding and no longer than C<curlen>;
+C<retlen> will be set to the length, in bytes, of that character.
- char toUPPER(char ch)
+If C<s> does not point to a well-formed UTF8 character, the behaviour
+is dependent on the value of C<flags>: if it contains UTF8_CHECK_ONLY,
+it is assumed that the caller will raise a warning, and this function
+will silently just set C<retlen> to C<-1> and return zero. If the
+C<flags> does not contain UTF8_CHECK_ONLY, warnings about
+malformations will be given, C<retlen> will be set to the expected
+length of the UTF-8 character in bytes, and zero will be returned.
+
+The C<flags> can also contain various flags to allow deviations from
+the strict UTF-8 encoding (see F<utf8.h>).
+
+Most code should use utf8_to_uvchr() rather than call this directly.
+
+ UV utf8n_to_uvuni(U8 *s, STRLEN curlen, STRLEN* retlen, U32 flags)
=for hackers
-Found in file handy.h
+Found in file utf8.c
=item utf8_distance
=for hackers
Found in file utf8.c
-=item utf8_to_uv
-
-Returns the character value of the first character in the string C<s>
-which is assumed to be in UTF8 encoding and no longer than C<curlen>;
-C<retlen> will be set to the length, in bytes, of that character.
+=item utf8_to_uvchr
-If C<s> does not point to a well-formed UTF8 character, the behaviour
-is dependent on the value of C<flags>: if it contains UTF8_CHECK_ONLY,
-it is assumed that the caller will raise a warning, and this function
-will silently just set C<retlen> to C<-1> and return zero. If the
-C<flags> does not contain UTF8_CHECK_ONLY, warnings about
-malformations will be given, C<retlen> will be set to the expected
-length of the UTF-8 character in bytes, and zero will be returned.
+Returns the native character value of the first character in the string C<s>
+which is assumed to be in UTF8 encoding; C<retlen> will be set to the
+length, in bytes, of that character.
-The C<flags> can also contain various flags to allow deviations from
-the strict UTF-8 encoding (see F<utf8.h>).
+If C<s> does not point to a well-formed UTF8 character, zero is
+returned and retlen is set, if possible, to -1.
- UV utf8_to_uv(U8 *s, STRLEN curlen, STRLEN* retlen, U32 flags)
+ UV utf8_to_uvchr(U8 *s, STRLEN* retlen)
=for hackers
Found in file utf8.c
-=item utf8_to_uv_simple
+=item utf8_to_uvuni
-Returns the character value of the first character in the string C<s>
+Returns the Unicode code point of the first character in the string C<s>
which is assumed to be in UTF8 encoding; C<retlen> will be set to the
length, in bytes, of that character.
+This function should only be used when returned UV is considered
+an index into the Unicode semantic tables (e.g. swashes).
+
If C<s> does not point to a well-formed UTF8 character, zero is
returned and retlen is set, if possible, to -1.
- UV utf8_to_uv_simple(U8 *s, STRLEN* retlen)
+ UV utf8_to_uvuni(U8 *s, STRLEN* retlen)
=for hackers
Found in file utf8.c
-=item uv_to_utf8
+=item uvchr_to_utf8
-Adds the UTF8 representation of the Unicode codepoint C<uv> to the end
+Adds the UTF8 representation of the Native codepoint C<uv> to the end
of the string C<d>; C<d> should be have at least C<UTF8_MAXLEN+1> free
bytes available. The return value is the pointer to the byte after the
-end of the new character. In other words,
+end of the new character. In other words,
- d = uv_to_utf8(d, uv);
+ d = uvchr_to_utf8(d, uv);
-is the recommended Unicode-aware way of saying
+is the recommended wide native character-aware way of saying
*(d++) = uv;
- U8* uv_to_utf8(U8 *d, UV uv)
+ U8* uvchr_to_utf8(U8 *d, UV uv)
=for hackers
Found in file utf8.c
-=item warn
-
-This is the XSUB-writer's interface to Perl's C<warn> function. Use this
-function the same way you use the C C<printf> function. See
-C<croak>.
-
- void warn(const char* pat, ...)
-
-=for hackers
-Found in file util.c
-
-=item XPUSHi
-
-Push an integer onto the stack, extending the stack if necessary. Handles
-'set' magic. See C<PUSHi>.
+=item uvuni_to_utf8_flags
- void XPUSHi(IV iv)
+Adds the UTF8 representation of the Unicode codepoint C<uv> to the end
+of the string C<d>; C<d> should be have at least C<UTF8_MAXLEN+1> free
+bytes available. The return value is the pointer to the byte after the
+end of the new character. In other words,
-=for hackers
-Found in file pp.h
+ d = uvuni_to_utf8_flags(d, uv, flags);
-=item XPUSHn
+or, in most cases,
-Push a double onto the stack, extending the stack if necessary. Handles
-'set' magic. See C<PUSHn>.
+ d = uvuni_to_utf8(d, uv);
- void XPUSHn(NV nv)
+(which is equivalent to)
-=for hackers
-Found in file pp.h
+ d = uvuni_to_utf8_flags(d, uv, 0);
-=item XPUSHp
+is the recommended Unicode-aware way of saying
-Push a string onto the stack, extending the stack if necessary. The C<len>
-indicates the length of the string. Handles 'set' magic. See
-C<PUSHp>.
+ *(d++) = uv;
- void XPUSHp(char* str, STRLEN len)
+ U8* uvuni_to_utf8_flags(U8 *d, UV uv, UV flags)
=for hackers
-Found in file pp.h
-
-=item XPUSHs
-
-Push an SV onto the stack, extending the stack if necessary. Does not
-handle 'set' magic. See C<PUSHs>.
-
- void XPUSHs(SV* sv)
+Found in file utf8.c
-=for hackers
-Found in file pp.h
-=item XPUSHu
+=back
-Push an unsigned integer onto the stack, extending the stack if necessary.
-See C<PUSHu>.
+=head1 Variables created by C<xsubpp> and C<xsubpp> internal functions
- void XPUSHu(UV uv)
+=over 8
-=for hackers
-Found in file pp.h
+=item ax
-=item XS
+Variable which is setup by C<xsubpp> to indicate the stack base offset,
+used by the C<ST>, C<XSprePUSH> and C<XSRETURN> macros. The C<dMARK> macro
+must be called prior to setup the C<MARK> variable.
-Macro to declare an XSUB and its C parameter list. This is handled by
-C<xsubpp>.
+ I32 ax
=for hackers
Found in file XSUB.h
-=item XSRETURN
+=item CLASS
-Return from XSUB, indicating number of items on the stack. This is usually
-handled by C<xsubpp>.
+Variable which is setup by C<xsubpp> to indicate the
+class name for a C++ XS constructor. This is always a C<char*>. See C<THIS>.
- void XSRETURN(int nitems)
+ char* CLASS
=for hackers
Found in file XSUB.h
-=item XSRETURN_EMPTY
+=item dAX
-Return an empty list from an XSUB immediately.
+Sets up the C<ax> variable.
+This is usually handled automatically by C<xsubpp> by calling C<dXSARGS>.
- XSRETURN_EMPTY;
+ dAX;
=for hackers
Found in file XSUB.h
-=item XSRETURN_IV
+=item dITEMS
-Return an integer from an XSUB immediately. Uses C<XST_mIV>.
+Sets up the C<items> variable.
+This is usually handled automatically by C<xsubpp> by calling C<dXSARGS>.
- void XSRETURN_IV(IV iv)
+ dITEMS;
=for hackers
Found in file XSUB.h
-=item XSRETURN_NO
+=item dXSARGS
-Return C<&PL_sv_no> from an XSUB immediately. Uses C<XST_mNO>.
+Sets up stack and mark pointers for an XSUB, calling dSP and dMARK.
+Sets up the C<ax> and C<items> variables by calling C<dAX> and C<dITEMS>.
+This is usually handled automatically by C<xsubpp>.
- XSRETURN_NO;
+ dXSARGS;
=for hackers
Found in file XSUB.h
-=item XSRETURN_NV
+=item dXSI32
-Return an double from an XSUB immediately. Uses C<XST_mNV>.
+Sets up the C<ix> variable for an XSUB which has aliases. This is usually
+handled automatically by C<xsubpp>.
- void XSRETURN_NV(NV nv)
+ dXSI32;
=for hackers
Found in file XSUB.h
-=item XSRETURN_PV
+=item items
-Return a copy of a string from an XSUB immediately. Uses C<XST_mPV>.
+Variable which is setup by C<xsubpp> to indicate the number of
+items on the stack. See L<perlxs/"Variable-length Parameter Lists">.
- void XSRETURN_PV(char* str)
+ I32 items
=for hackers
Found in file XSUB.h
-=item XSRETURN_UNDEF
+=item ix
-Return C<&PL_sv_undef> from an XSUB immediately. Uses C<XST_mUNDEF>.
+Variable which is setup by C<xsubpp> to indicate which of an
+XSUB's aliases was used to invoke it. See L<perlxs/"The ALIAS: Keyword">.
- XSRETURN_UNDEF;
+ I32 ix
=for hackers
Found in file XSUB.h
-=item XSRETURN_YES
-
-Return C<&PL_sv_yes> from an XSUB immediately. Uses C<XST_mYES>.
+=item newXSproto
- XSRETURN_YES;
+Used by C<xsubpp> to hook up XSUBs as Perl subs. Adds Perl prototypes to
+the subs.
=for hackers
Found in file XSUB.h
-=item XST_mIV
+=item RETVAL
-Place an integer into the specified position C<pos> on the stack. The
-value is stored in a new mortal SV.
+Variable which is setup by C<xsubpp> to hold the return value for an
+XSUB. This is always the proper type for the XSUB. See
+L<perlxs/"The RETVAL Variable">.
- void XST_mIV(int pos, IV iv)
+ (whatever) RETVAL
=for hackers
Found in file XSUB.h
-=item XST_mNO
+=item ST
-Place C<&PL_sv_no> into the specified position C<pos> on the
-stack.
+Used to access elements on the XSUB's stack.
- void XST_mNO(int pos)
+ SV* ST(int ix)
=for hackers
Found in file XSUB.h
-=item XST_mNV
+=item THIS
-Place a double into the specified position C<pos> on the stack. The value
-is stored in a new mortal SV.
+Variable which is setup by C<xsubpp> to designate the object in a C++
+XSUB. This is always the proper type for the C++ object. See C<CLASS> and
+L<perlxs/"Using XS With C++">.
- void XST_mNV(int pos, NV nv)
+ (whatever) THIS
=for hackers
Found in file XSUB.h
-=item XST_mPV
-
-Place a copy of a string into the specified position C<pos> on the stack.
-The value is stored in a new mortal SV.
+=item XS
- void XST_mPV(int pos, char* str)
+Macro to declare an XSUB and its C parameter list. This is handled by
+C<xsubpp>.
=for hackers
Found in file XSUB.h
-=item XST_mUNDEF
-
-Place C<&PL_sv_undef> into the specified position C<pos> on the
-stack.
-
- void XST_mUNDEF(int pos)
-
-=for hackers
-Found in file XSUB.h
+=item XSRETURN_EMPTY
-=item XST_mYES
+Return an empty list from an XSUB immediately.
-Place C<&PL_sv_yes> into the specified position C<pos> on the
-stack.
- void XST_mYES(int pos)
+ XSRETURN_EMPTY;
=for hackers
Found in file XSUB.h
=for hackers
Found in file XSUB.h
-=item Zero
-The XSUB-writer's interface to the C C<memzero> function. The C<dest> is the
-destination, C<nitems> is the number of items, and C<type> is the type.
+=back
- void Zero(void* dest, int nitems, type)
+=head1 Warning and Dieing
+
+=over 8
+
+=item croak
+
+This is the XSUB-writer's interface to Perl's C<die> function.
+Normally use this function the same way you use the C C<printf>
+function. See C<warn>.
+
+If you want to throw an exception object, assign the object to
+C<$@> and then pass C<Nullch> to croak():
+
+ errsv = get_sv("@", TRUE);
+ sv_setsv(errsv, exception_object);
+ croak(Nullch);
+
+ void croak(const char* pat, ...)
=for hackers
-Found in file handy.h
+Found in file util.c
+
+=item warn
+
+This is the XSUB-writer's interface to Perl's C<warn> function. Use this
+function the same way you use the C C<printf> function. See
+C<croak>.
+
+ void warn(const char* pat, ...)
+
+=for hackers
+Found in file util.c
+
=back
projects / p5sagit/p5-mst-13.2.git / blobdiff