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* Add Perl_amagic_deref_call() to implement the bulk of tryAMAGICunDEREF_var().Nicholas Clark2010-11-031-0/+1
| | | | | | | | | This removes around 300 bytes of object code from each place it was previously inlined. It also provides a better interface - quite a lot of the core currently bodges things by creating a local variable C<SV **sp = &sv> to use the macro. Change the XS::APItest wrapper to amagic_deref_call().
* Add transr op typeFather Chrysostomos2010-11-021-0/+1
| | | | | for the upcoming y///r feature. There are not enough flag bits, hence the extra type.
* Allow push/pop/keys/etc to act on referencesDavid Golden2010-10-311-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All built-in functions that operate directly on array or hash containers now also accept hard references to arrays or hashes: |----------------------------+---------------------------| | Traditional syntax | Terse syntax | |----------------------------+---------------------------| | push @$arrayref, @stuff | push $arrayref, @stuff | | unshift @$arrayref, @stuff | unshift $arrayref, @stuff | | pop @$arrayref | pop $arrayref | | shift @$arrayref | shift $arrayref | | splice @$arrayref, 0, 2 | splice $arrayref, 0, 2 | | keys %$hashref | keys $hashref | | keys @$arrayref | keys $arrayref | | values %$hashref | values $hashref | | values @$arrayref | values $arrayref | | ($k,$v) = each %$hashref | ($k,$v) = each $hashref | | ($k,$v) = each @$arrayref | ($k,$v) = each $arrayref | |----------------------------+---------------------------| This allows these built-in functions to act on long dereferencing chains or on the return value of subroutines without needing to wrap them in C<@{}> or C<%{}>: push @{$obj->tags}, $new_tag; # old way push $obj->tags, $new_tag; # new way for ( keys %{$hoh->{genres}{artists}} ) {...} # old way for ( keys $hoh->{genres}{artists} ) {...} # new way For C<push>, C<unshift> and C<splice>, the reference will auto-vivify if it is not defined, just as if it were wrapped with C<@{}>. Calling C<keys> or C<values> directly on a reference gives a substantial performance improvement over explicit dereferencing. For C<keys>, C<values>, C<each>, when overloaded dereferencing is present, the overloaded dereference is used instead of dereferencing the underlying reftype. Warnings are issued about assumptions made in the following three ambiguous cases: (a) If both %{} and @{} overloading exists, %{} is used (b) If %{} overloading exists on a blessed arrayref, %{} is used (c) If @{} overloading exists on a blessed hashref, @{} is used
* Renaming of stashes should not be visible from PerlFather Chrysostomos2010-10-271-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | Change 35759254 made stashes get renamed when moved around. This had an unintended consequence: Typeglobs, ref() return values, stringifi- cation of blessed references and __PACKAGE__ are all affected by this. This commit makes a new distinction between stashes’ names and effect- ive names. Stash names are now unaffected when the stashes move around. Only the effective names are affected. (The apparent presence of any puns in the previous sentence is purely incidental and most likely the result of the reader’s inferential propensity.) To this end a new HvENAME_get macro is introduced, returning the first effective name (what HvNAME_get was returning). (Only one effective name needs to be in effect at a time.) hv_add_name and hv_delete_name have been renamed hv_add_ename and hv_delete_ename. hv_name_set is modified to leave the effective names in place unless the name is being set to NULL. These names are now stored in HvAUX as follows: When xhv_name_count is 0, xhv_name is a HEK pointer, containing the name which is also the effective name. When xhv_name_count is not zero, then xhv_name is a pointer to an array of HEK pointers. If xhv_name_count is positive, the first HEK is the name *and* one of the effective names. When xhv_name_count is negative, the first HEK is the name and subsequent HEKs are the effective names.
* new API functions op_scope and op_lvalueZefram2010-10-261-2/+2
| | | | | | The function scope() goes into the API as op_scope(), and mod() goes into the API as op_lvalue(). Both marked experimental, because their behaviour is a little quirky and not trivially dequirkable.
* add CvSTASH_set() macro and make CvSTASH() rvalue onlyZefram2010-10-251-0/+1
| | | | | | Now that CvSTASH requires backreference bookkeeping, stop people from directly assigning to it (by using CvSTASH() as an lvalue), and instead force them to use CvSTASH_set().
* Implement DIR* cloning on WindowsJan Dubois2010-10-251-1/+1
| | | | | | | | | | | | | | | | | | There doesn't seem to be a mechanism to clone FileFind handles on Windows. Therefore this implementation just reads all remaining entries into a cache buffer and closes the handle. All further readdir() requests will be fulfilled from the cache buffer, in both the original and the new interpreter. This fixes bug 75154 on Windows (all tests in t/op/threads-dirh.t pass). This commit also changes the return value of win32_telldir() to -1 for directory handles that have been read until the end. The previous return value was (NULL - dirp->start), which technically is not valid C code. API change alert: Perl_dirp_dup() gets an additional CLONE_PARAMS parameter in this change (like all the other Perl_*_dup() functions).
* function to parse isolated labelZefram2010-10-251-0/+1
| | | | | | | New API function parse_label() parses a label, separate from statements. If a label has not already been lexed and queued up, it does not use yylex(), but parses the label itself at the character level, to avoid unwanted lexing past an absent optional label.
* function to parse unlabelled statementZefram2010-10-251-0/+1
| | | | | New API function parse_barestmt() parses a pure statement, with no label, and returns just the statement's core ops, not attaching a state op.
* stop passing line numbers into op constructor functionsZefram2010-10-251-2/+2
| | | | | | | | | Remove the line number parameter from newWHILEOP() and newFOROP() functions. Instead, the line number for the impending COP is set by parser code after constructing the ops. (In fact the parser was doing this anyway in most cases.) This brings newWHILEOP() and newFOROP() in line with the other op constructors, in that they do not concern themselves with COPs.
* refactor and regularise label/statement grammarZefram2010-10-251-1/+1
| | | | | | | | | | | | | | | | | | | | Refactoring of the grammar around statements. New production <barestmt> encompasses a statement without label. It includes all statement types, including declarations, with no unnecessary intermediate non-terminals. It generates an op tree for the statement's content, with no leading state op. The <fullstmt> production has just one rule, consisting of optional label followed by <barestmt>. It puts a state op on the front of the statement's content ops. To support the regular statement op structure, the op sequence for for(;;) loops no longer has a second state op between the initialisation and the loop. Instead, the unstack op type is slightly adapted to achieve the stack clearing without a state op. The newFOROP() constructor function no longer generates a state op, that now being the job of the <fullstmt> production. Consequently it no longer takes a parameter stating what label is to go in the state op. This brings it in line with the other op constructors.
* Add functions for adding and deleting stash namesFather Chrysostomos2010-10-221-0/+2
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* full API for cop hint hashesZefram2010-10-211-3/+9
| | | | | | | | | | | | | Expose cop hint hashes as a type COPHH, with a cophh_* API which is a macro layer over the refcounted_he_* API. The documentation for cophh_* describes purely API-visible behaviour, whereas the refcounted_he_* documentation describes the functions mainly in terms of the implementation. Revise the cop_hints_* API, using the flags parameter consistently and reimplementing in terms of cophh_*. Use the cophh_* and cop_hints_* functions consistently where appropriate. [Modified by the committer to update two calls to Perl_refcounted_he_fetch recently added to newPMOP.]
* function to parse Perl code blockZefram2010-10-211-0/+1
| | | | | New API function parse_block() parses a code block, including surrounding braces. The block is a lexical scope, but not inherently a dynamic scope.
* add lex_start to the APIZefram2010-10-211-1/+1
| | | | | lex_start() is added to the API, marked experimental, and documented. It also gains a flags parameter for foreseeable future use.
* remove redundant lex_endZefram2010-10-211-1/+0
| | | | | | | The lex_end() function is redundant, because the lexer context object is actually finalised by parser_free(), triggered by the save stack. The lex_end() function has historically been empty, except when the PL_doextract global was being misused to store lexer state.
* remove filter inheritance option from lex_startZefram2010-10-211-1/+1
| | | | | | | | The only uses of lex_start that had the new_filter parameter false, to make the new lexer context share source filters with the previous lexer context, were uses with rsfp null, which therefore never invoked source filters. Inheriting source filters from a logically unrelated file seems like a silly idea anyway.
* embed.pl -> regen/embed.plFather Chrysostomos2010-10-131-2/+2
| | | | so newcomers can find it more easily
* Add LINKLIST to the API.Ben Morrow2010-10-121-1/+1
| | | | | Also rename the underlying function to op_linklist, to match the other API op functions.
* APIify op list constructorsZefram2010-10-121-3/+3
| | | | | | Put into the API op_append_elem, op_prepend_elem, and op_append_list. All renamed from op_-less internal names. Parameter types for op_append_list changed to match the rest of the op API and avoid some casting.
* Reset isa caches on nonexistent substashes when stash trees are movedFather Chrysostomos2010-10-121-1/+1
| | | | | | | | | | | | | | | | | This fixes the problem of isa cache linearisations’ and method caches’ not being reset on nonexistent packages when they are replaced with real packages as a result of parent stashes’ being moved. This can happen in cases like this: @left::ISA = 'outer::inner'; @right::ISA = 'clone::inner'; {package outer::inner} *clone:: = \%outer::; print "ok 1", "\n" if left->isa("clone::inner"); print "ok 2", "\n" if right->isa("outer::inner"); This changes mro_package_moved’s parameter list as documented in the diff for mro.c. See also the new comments in that function.
* Allow mro_isa_changed_in to be called on nonexistent packagesFather Chrysostomos2010-10-111-1/+1
| | | | | | | | | | | | | | | | | This is necessary for an upcoming bug fix. (For this bug: @left::ISA = 'outer::inner'; @right::ISA = 'clone::inner'; *clone:: = \%outer::; print left->isa('clone::inner'),"\n"; print right->isa('outer::inner'),"\n"; ) This commit actually replaces mro_isa_changed_in with mro_isa_changed_in3. See the docs for it in the diff for mro.c.
* plugin mechanism to rewrite calls to a subroutineZefram2010-10-101-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | New magic type PERL_MAGIC_checkcall attaches a function to a CV, which will be called as the second half of the op checker for an entersub op calling that CV. Default state, in the absence of this magic, is to process the CV's prototype if it has one, or apply list context to all the arguments if not. New API functions cv_get_call_checker() and cv_set_call_checker() provide a clean interface to this facility, hiding the internal use of magic. Expose in the API the new functions rv2cv_op_cv(), ck_entersub_args_list(), ck_entersub_args_proto(), and ck_entersub_args_proto_or_list(), which are meaningful segments of standard entersub op checking and are likely to be useful in plugged-in call checker functions. Expose new API function op_contextualize(), which is a public interface to the internal scalar()/list()/scalarvoid() functions. This API is likely to be required in most plugged-in call checker functions. Incidentally add new function mg_free_type(), in the API, which will remove magic of one type from an SV. (mg_free() removes all magic, and there isn't anything else more selective.)
* Reset isa on stash manipulationFather Chrysostomos2010-10-091-0/+1
| | | | | | | | | | | | This only applies to glob-to-glob assignments and deletions of stash elements. Other types of stash manipulation are dealt with by subse- quent patches. It adds mro_package_moved, a private function that iterates through subpackages, calling mro_isa_changed_in on each. This is related to [perl #75176], but is not the same bug. It simply got in the way of fixing [perl #75176].
* Remove now-unused parameters from S_gv_magicalize_isa().Nicholas Clark2010-10-091-1/+1
| | | | 997daa56862a0fc7 eliminated the need for passing these in.
* [PATCH] function to parse Perl statement sequenceZefram2010-10-041-0/+1
| | | | | New API function parse_stmtseq() parses a sequence of statements, up to closing brace or EOF.
* add stray save_* functions to the APIZefram2010-10-041-2/+2
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* Merge adjacent #ifndef PERL_IMPLICIT_CONTEXT blocks in embed.hNicholas Clark2010-09-301-6/+0
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* Remove empty #if/#endif pairs from embed.hNicholas Clark2010-09-301-52/+0
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* Sort embed.fnc by CPP macro and then function name, before generating files.Nicholas Clark2010-09-301-1639/+1203
| | | | | Additionally, sort embed.h by public API, then core-or-ext, and finally core only. This reduces the number of #if/#endif pairs in embed.h and proto.h
* When generating embed.h, return early if an embed.fnc entry causes no output.Nicholas Clark2010-09-291-52/+0
| | | | This removes several adjacent empty pairs of #ifdef/#endif.
* Normalise all the pre-processor directives in embed.h and proto.hNicholas Clark2010-09-291-85/+85
| | | | | Remove all whitespace after the # Change #ifdef to #if defined and #ifndef to #if !defined
* Skip the blank lines when processing embed.fncNicholas Clark2010-09-291-10/+0
| | | | This has the side effect of simplifying the generated embed.h and proto.h
* systematically provide pv/pvn/pvs/sv quartetsZefram2010-09-281-0/+5
| | | | | Anywhere an API function takes a string in pvn form, ensure that there are corresponding pv, pvs, and sv APIs.
* Remove empty preprocessor directive in embed.fncAndy Dougherty2010-09-271-2/+0
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* Move OP prototypes from pp_proto.h to proto.hNicholas Clark2010-09-271-41/+2
| | | | | | | | | | | | Make embed.pl fully responsible for generating prototypes and embedding macros for pp_* and ck_* functions, placing them in embed.h and proto.h opcode.pl no longer generates pp_proto.h Remove the (effectively) duplicate explicit entries for (all but 2) ck_* functions from embed.fnc We can't actually remove pp_proto.h from the distribution *yet*, as ExtUtils::MM_Unix and ExtUtils::MM_VMS have hardcoded lists of the installed headers. Once this is resolved, we can.
* Use the same $func to Perl_$func macros independent of multiplicity.Nicholas Clark2010-09-251-2469/+51
| | | | | | | | The macros of the form #define foo(a, b) Perl_foo(aTHX_ a, b) will also work under non-multiplicity. There's no issue with adding explicit arguments in the non-multiplicity case, because it changes one form of compile-time error into another. (Function Perl_foo passed the wrong number of arguments into macro foo passed the wrong number of arguments.)
* [perl #76814] FETCH called twice - !Father Chrysostomos2010-09-241-2/+2
| | | | | | This fixes ! by changing sv_2bool to sv_2bool_flags (with a macro wrapper) and adding SvTRUE_nomg. It also corrects the docs that state incorrectly that SvTRUE does not handle magic.
* [perl #76814] FETCH called twice - string comparison opsFather Chrysostomos2010-09-241-4/+8
| | | | | | This patch changes sv_eq, sv_cmp, sv_cmp_locale and sv_collxfrm to _flags forms, with macros under the old names for sv_eq and sv_collxfrm, but functions for sv_cmp* since pp_sort.c needs them.
* Run perl regen.pl after removing regcurly from embed.fnc.Andy Dougherty2010-09-221-6/+0
| | | | | | | | Since regcurly is now a static inline function, it no longer needs to appear in embed.fnc. embed.pl doesn't quite have the right flags to deal with static inline functions, so I just removed regcurly entirely. It's not for embedding or exporting anyway.
* Emit $_ to Perl_$_ for "nocontext" functions under multiplicity.Nicholas Clark2010-09-221-0/+16
| | | | | | | | | (Strictly for all functions with variable arguments, but *no* explicit interpreter context arguments. Most of these are *_nocontext.) We're already emitting macros for the non-multiplicity case, and as these functions don't need an aTHX_ adding, there's no C portability reason why we can't generate them here too. So do so, for consistency.
* Programmatically generate the compatibility macros for "misnamed functions".Nicholas Clark2010-09-221-4/+4
| | | | | Add a new flag 'O' in embed.fnc to generate a macro mapping perl_$func() to $func(). The macro for call_atexit() is far too special to do this way.
* Programmatically generate embed.h's *_nocontext exception list in embed.pl.Nicholas Clark2010-09-211-21/+21
| | | | Previously the list was hard-coded.
* Back out the mauve module and related changesFlorian Ragwitz2010-09-161-2/+0
| | | | | | | | | | | | | | | | | | | | | It's was intended as a temporary namespace only, and we really don't want to ship it in any release until we've figured out what it should really look like. This reverts commit 05c0d6bbe3ec5cc9af99d105b8648ad02ed7cc95, "add sv_reftype_len() and make sv_reftype() be a wrapper for it" commit 792477b9c2e4c75cb03d07bd6d25dc7e1fdf448e, "create the "mauve" temporary namespace for things like reftype" commit 8df6b97c1de8326d50ac9c8cae4bf716393b45bb, "mauve.t needs access to %Config, make sure it's available" commit cfe9162d0d593cd12a979c73df82c7509b324343, "use more efficient sv_reftype_len() interface" and commit 47b13905e23c2a72acdde8bb4669e25e5eaefec4 "add more tests to lib/mauve.t so it tests also that mauve::reftype can return "LVALUE"" There's a `mauve' branch still containing all the code for the temporary mauve namespace. That should be used to work on it until it's mostly ready to be released, and only then merged to blead. Alternatively, it should be deleted if another way to provide mauve's features in the core is found.
* add hv_copy_hints_hv and save_hints to the APIZefram2010-09-161-6/+2
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* Shorten external symbol name for VMSFlorian Ragwitz2010-09-111-2/+2
| | | | | | VMS seems to have a 31 character limitation for external symbols. To be able to fit into that, rename 'coerce_qwlist_to_paren_list' to 'munge_qwlist_to_paren_list'.
* Remove offer_nice_chunk(), PL_nice_chunk and PL_nice_chunk_size.Nicholas Clark2010-09-081-6/+0
| | | | | | | | | | | | | | | | | | These provided a non-public API for the hash and array code to donate free memory direct to the SV head allocation routines, instead of returning it to the malloc system with free(). I assume that on some older mallocs this could offer significant benefits. However, my benchmarking on a modern malloc couldn't detect any significant effect (positive or negative) on removing the code. Its (continued) presence, however, has downsides a: slightly more code complexity b: slightly larger interpreter structure c: in the steady state, if net creation of SVs is zero, 1 chunk of allocated but unused memory will exist (per thread) So I think it best to remove it.
* make qw(...) first-class syntaxZefram2010-09-081-0/+4
| | | | | | | | | | This makes a qw(...) list literal a distinct token type for the parser, where previously it was munged into a "(",THING,")" sequence. The change means that qw(...) can't accidentally supply parens to parts of the grammar that want real parens. Due to many bits of code taking advantage of that by "foreach my $x qw(...) {}", this patch also includes a hack to coerce qw(...) to the old-style parenthesised THING, emitting a deprecation warning along the way.
* Move magicalize_{isa,overload} out into functionsFlorian Ragwitz2010-09-081-0/+4
| | | | | This way c++ compilers like us again, as we don't do jumps that skip initialisations anymore.
* make regen.Ben Morrow2010-09-071-0/+10
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