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internal.h: add BITFIELD macro to aid C99 users
I plan to use this macro to pack other enums in the VM. * internal.h: add BITFIELD macro * method.h: use BITFIELD for rb_method_visibility_t [ruby-core:85074] [Misc #14395] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62077 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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2 changed files with 14 additions and 7 deletions
13
internal.h
13
internal.h
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@ -2066,6 +2066,19 @@ rb_obj_builtin_type(VALUE obj)
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# define FLEX_ARY_LEN 1 /* VALUE ary[1]; */
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#endif
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/*
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* For declaring bitfields out of non-unsigned int types:
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* struct date {
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* BITFIELD(enum months) month:4;
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* ...
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* };
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*/
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#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
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# define BITFIELD(type) type
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#else
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# define BITFIELD(type) unsigned int
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#endif
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#if defined(__cplusplus)
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#if 0
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{ /* satisfy cc-mode */
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8
method.h
8
method.h
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@ -32,16 +32,10 @@ typedef enum {
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METHOD_VISI_MASK = 0x03
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} rb_method_visibility_t;
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#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
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#define bits_t rb_method_visibility_t
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#else
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#define bits_t unsigned int
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#endif
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typedef struct rb_scope_visi_struct {
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bits_t method_visi : 3;
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BITFIELD(rb_method_visibility_t) method_visi : 3;
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unsigned int module_func : 1;
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} rb_scope_visibility_t;
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#undef bits_t
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/*! CREF (Class REFerence) */
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typedef struct rb_cref_struct {
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