diff options
| author | Paul "LeoNerd" Evans <leonerd@leonerd.org.uk> | 2022-12-24 13:17:47 +0000 |
|---|---|---|
| committer | Paul "LeoNerd" Evans <leonerd@leonerd.org.uk> | 2023-02-10 12:07:02 +0000 |
| commit | 99b497aa90ed7db99d29a301b47c91fba65c9cb3 (patch) | |
| tree | 09e231f3a6838cdb2df9db9454981b9205046ba1 /pad.h | |
| parent | b40895ae558e0aff0c347785dafeaaff40a01801 (diff) | |
| download | perl-99b497aa90ed7db99d29a301b47c91fba65c9cb3.tar.gz | |
Initial attack at basic 'class' feature
Adds a new experimental warning, feature, keywords and enough parsing to
implement basic classes with an empty `new` constructor method.
Inject a $self lexical into method bodies; populate it with the object instance, suitably shifted
Creates a new OP_METHSTART opcode to perform method setup
Define an aux flag to remark which stashes are classes
Basic implementation of fields.
Basic anonymous methods.
Diffstat (limited to 'pad.h')
| -rw-r--r-- | pad.h | 20 |
1 files changed, 20 insertions, 0 deletions
@@ -55,6 +55,8 @@ struct padnamelist { # define PERL_PADNAME_MINIMAL #endif +struct padname_fieldinfo; + #define _PADNAME_BASE \ char * xpadn_pv; \ HV * xpadn_ourstash; \ @@ -62,6 +64,7 @@ struct padnamelist { HV * xpadn_typestash; \ CV * xpadn_protocv; \ } xpadn_type_u; \ + struct padname_fieldinfo *xpadn_fieldinfo; \ U32 xpadn_low; \ U32 xpadn_high; \ U32 xpadn_refcnt; \ @@ -87,6 +90,14 @@ struct padname_with_str { #define PADNAME_FROM_PV(s) \ ((PADNAME *)((s) - STRUCT_OFFSET(struct padname_with_str, xpadn_str))) +/* Most padnames are not field names. Keep all the field-related info in its + * own substructure, stored in ->xpadn_fieldinfo. + */ +struct padname_fieldinfo { + PADOFFSET fieldix; /* index of this field within ObjectFIELDS() array */ + HV *fieldstash; /* original class package which added this field */ +}; + /* a value that PL_cop_seqmax is guaranteed never to be, * flagging that a lexical is being introduced, or has not yet left scope @@ -132,6 +143,8 @@ typedef enum { #define padadd_NO_DUP_CHECK 0x04 /* skip warning on dups. */ #define padadd_STALEOK 0x08 /* allow stale lexical in active * sub, but only one level up */ +#define padadd_FIELD 0x10 /* set PADNAMEt_FIELD */ +#define padfind_FIELD_OK 0x20 /* pad_findlex is permitted to see fields */ /* ASSERT_CURPAD_LEGAL and ASSERT_CURPAD_ACTIVE respectively determine * whether PL_comppad and PL_curpad are consistent and whether they have @@ -244,6 +257,10 @@ are often referred to as 'fake'. =for apidoc m|bool|PadnameIsSTATE|PADNAME * pn Whether this is a "state" variable. +=for apidoc m|bool|PadnameIsFIELD|PADNAME * pn +Whether this is a "field" variable. PADNAMEs where this is true will +have additional information available via C<PadnameFIELDINFO>. + =for apidoc m|HV *|PadnameTYPE|PADNAME * pn The stash associated with a typed lexical. This returns the C<%Foo::> hash for C<my Foo $bar>. @@ -330,9 +347,11 @@ Restore the old pad saved into the local variable C<opad> by C<PAD_SAVE_LOCAL()> #define PadnameREFCNT_dec(pn) Perl_padname_free(aTHX_ pn) #define PadnameOURSTASH_set(pn,s) (PadnameOURSTASH(pn) = (s)) #define PadnameTYPE_set(pn,s) (PadnameTYPE(pn) = (s)) +#define PadnameFIELDINFO(pn) (pn)->xpadn_fieldinfo #define PadnameOUTER(pn) (PadnameFLAGS(pn) & PADNAMEf_OUTER) #define PadnameIsSTATE(pn) (PadnameFLAGS(pn) & PADNAMEf_STATE) #define PadnameLVALUE(pn) (PadnameFLAGS(pn) & PADNAMEf_LVALUE) +#define PadnameIsFIELD(pn) (PadnameFLAGS(pn) & PADNAMEf_FIELD) #define PadnameLVALUE_on(pn) (PadnameFLAGS(pn) |= PADNAMEf_LVALUE) #define PadnameIsSTATE_on(pn) (PadnameFLAGS(pn) |= PADNAMEf_STATE) @@ -342,6 +361,7 @@ Restore the old pad saved into the local variable C<opad> by C<PAD_SAVE_LOCAL()> #define PADNAMEf_LVALUE 0x04 /* used as lvalue */ #define PADNAMEf_TYPED 0x08 /* for B; unused by core */ #define PADNAMEf_OUR 0x10 /* for B; unused by core */ +#define PADNAMEf_FIELD 0x20 /* field var */ /* backward compatibility */ #ifndef PERL_CORE |