=for hackers
Found in file av.c
-=item Nullav
-
-Null AV pointer.
-
-
-=for hackers
-Found in file av.h
-
=item sortsv
Sort an array. Here is an example:
=for hackers
Found in file perl.c
-=item Nullcv
-
-Null CV pointer.
-
-
-=for hackers
-Found in file cv.h
-
=back
=over 8
-=item HEf_SVKEY
-
-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).
+=item Nullav
+Null AV pointer.
=for hackers
-Found in file hv.h
+Found in file av.h
=item Nullch
=for hackers
Found in file handy.h
+=item Nullcv
+
+Null CV pointer.
+
+=for hackers
+Found in file cv.h
+
+=item Nullhv
+
+Null HV pointer.
+
+=for hackers
+Found in file hv.h
+
=item Nullsv
Null SV pointer.
=for hackers
Found in file perl.c
+=item HEf_SVKEY
+
+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).
+
+=for hackers
+Found in file hv.h
+
=item HeHASH
Returns the computed hash stored in the hash entry.
=for hackers
Found in file hv.c
-=item Nullhv
-
-Null HV pointer.
-
-
-=for hackers
-Found in file hv.h
-
=back
=for hackers
Found in file sv.h
+=item SvUNLOCK
+
+Releases a mutual exclusion lock on sv if a suitable module
+has been loaded.
+
+ void SvUNLOCK(SV* sv)
+
+=for hackers
+Found in file sv.h
+
=back
=for hackers
Found in file handy.h
-=item NEWSV
-
-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).
-
-
- SV* NEWSV(int id, STRLEN len)
-
-=for hackers
-Found in file handy.h
-
=item Newz
The XSUB-writer's interface to the C C<malloc> function. The allocated
Opening bracket for arguments on a callback. See C<PUTBACK> and
L<perlcall>.
- PUSHMARK;
+ void PUSHMARK(SP)
=for hackers
Found in file pp.h
=for hackers
Found in file XSUB.h
+=item XSRETURN_EMPTY
+
+Return an empty list from an XSUB immediately.
+
+ XSRETURN_EMPTY;
+
+=for hackers
+Found in file XSUB.h
+
=item XSRETURN_IV
Return an integer from an XSUB immediately. Uses C<XST_mIV>.
=for hackers
Found in file sv.c
+=item NEWSV
+
+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).
+
+ SV* NEWSV(int id, STRLEN len)
+
+=for hackers
+Found in file handy.h
+
=item newSV
Create a new null SV, or if len > 0, create a new empty SVt_PV type SV
=for hackers
Found in file sv.h
-=item SvUNLOCK
-
-Releases a mutual exclusion lock on sv if a suitable module
-has been loaded.
-
-
- void SvUNLOCK(SV* sv)
-
-=for hackers
-Found in file sv.h
-
=item SvUOK
Returns a boolean indicating whether the SV contains an unsigned integer.
=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
+If the PV of the SV is an octet sequence in UTF-8
+and contains a multiple-byte character, the C<SvUTF8> flag is turned on
+so that it looks like a character. If the PV contains only single-byte
+characters, the C<SvUTF8> flag stays being off.
+Scans PV for validity and returns false if the PV is invalid UTF-8.
NOTE: this function is experimental and may change or be
removed without notice.
=item sv_utf8_downgrade
-Attempt to convert the PV of an SV from UTF-8-encoded to byte encoding.
-This may not be possible if the PV contains non-byte encoding characters;
-if this is the case, either returns false or, if C<fail_ok> is not
+Attempts to convert the PV of an SV from characters to bytes.
+If the PV contains a character beyond byte, this conversion will fail;
+in this 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:
=item sv_utf8_encode
-Convert the PV of an SV to UTF-8-encoded, but then turn off the C<SvUTF8>
-flag so that it looks like octets again. Used as a building block
-for encode_utf8 in Encode.xs
+Converts the PV of an SV to UTF-8, but then turns the C<SvUTF8>
+flag off so that it looks like octets again.
void sv_utf8_encode(SV *sv)
=item sv_utf8_upgrade
-Convert the PV of an SV to its UTF-8-encoded form.
+Converts the PV of an SV to its UTF-8-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.
=item sv_utf8_upgrade_flags
-Convert the PV of an SV to its UTF-8-encoded form.
+Converts the PV of an SV to its UTF-8-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,
=for hackers
Found in file XSUB.h
-=item XSRETURN_EMPTY
-
-Return an empty list from an XSUB immediately.
-
-
- XSRETURN_EMPTY;
-
-=for hackers
-Found in file XSUB.h
-
=item XS_VERSION
The version identifier for an XS module. This is usually
projects / p5sagit/p5-mst-13.2.git / blobdiff