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/* You may distribute under the terms of either the GNU General Public License |
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* or the Artistic License (the same terms as Perl itself) |
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* |
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* (C) Paul Evans, 2021-2022 -- leonerd@leonerd.org.uk |
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*/ |
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#define PERL_NO_GET_CONTEXT |
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8
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#include "EXTERN.h" |
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#include "perl.h" |
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10
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#include "XSUB.h" |
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12
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#include "object_pad.h" |
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14
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#include "perl-backcompat.c.inc" |
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15
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16
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2
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static void trigger_gen_accessor_ops(pTHX_ FieldMeta *fieldmeta, SV *hookdata, void *_funcdata, enum AccessorType type, struct AccessorGenerationCtx *ctx) |
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{ |
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2
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100
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if(type != ACCESSOR_WRITER) |
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return; |
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21
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OP *selfop; |
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1
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OP *callop = newLISTOP(OP_LIST, 0, |
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23
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selfop = newOP(OP_PADSV, 0), NULL); |
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1
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50
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callop = op_append_list(OP_LIST, callop, |
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newMETHOP_named(OP_METHOD_NAMED, 0, newSVpvn_share(SvPV_nolen(hookdata), SvCUR(hookdata), 0))); |
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1
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selfop->op_targ = PADIX_SELF; |
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28
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29
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1
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callop = op_convert_list(OP_ENTERSUB, OPf_STACKED, callop); |
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30
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31
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1
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ctx->post_bodyops = op_append_list(OP_LINESEQ, ctx->post_bodyops, callop); |
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32
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33
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1
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return; |
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34
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} |
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35
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36
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1
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static void trigger_seal(pTHX_ FieldMeta *fieldmeta, SV *hookdata, void *_funcdata) |
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{ |
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1
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50
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if(mop_field_get_attribute(fieldmeta, "writer")) |
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return; |
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41
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0
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warn("Applying :Trigger attribute to field %" SVf " is not useful without a :writer", |
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0
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SVfARG(mop_field_get_name(fieldmeta))); |
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} |
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44
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45
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static const struct FieldHookFuncs trigger_hooks = { |
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46
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.ver = OBJECTPAD_ABIVERSION, |
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.flags = OBJECTPAD_FLAG_ATTR_MUST_VALUE, |
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48
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.permit_hintkey = "Object::Pad::FieldAttr::Trigger/Trigger", |
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49
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50
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.seal = &trigger_seal, |
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51
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.gen_accessor_ops = &trigger_gen_accessor_ops, |
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52
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}; |
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53
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54
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MODULE = Object::Pad::FieldAttr::Trigger PACKAGE = Object::Pad::FieldAttr::Trigger |
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55
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56
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BOOT: |
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57
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2
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register_field_attribute("Trigger", &trigger_hooks, NULL); |