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54 lines
1.3 KiB
C
54 lines
1.3 KiB
C
%# -*- c -*-
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#include "ruby/ruby.h"
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<%
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class String
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def tr_cpp
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strip.upcase.tr_s("^A-Z0-9_*", "_").tr_s("*", "P")
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end
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end
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headers = Hash.new {[]}
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sizes = {}
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types = ARGF.grep(/^\s*RUBY_CHECK_SIZEOF\((\w[^\[\],#]*)[^#]*\)|
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^\s*RUBY_DEFINT\((\w[^\[\],#]*)[^#]*\)|
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^\s*have_type\('(.+?)'(?:,\s*%w\[(.+)\])?\)/x) do
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sizes[type = $3] = true
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hdrs = $4 and hdrs.split.each {|h| headers[h] <<= type}
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type || $+
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end
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conditions = {
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"long long" => 'defined(HAVE_TRUE_LONG_LONG)',
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}
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%>
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% headers.each do |h, type|
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#if <%= type.map {|t| "defined(HAVE_TYPE_#{t.tr_cpp})"}.join(' || ') %>
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# include <<%= h %>>
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#endif
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% end
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extern void Init_limits(void);
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void
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Init_sizeof(void)
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{
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VALUE s = rb_hash_new();
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rb_define_const(rb_define_module("RbConfig"), "SIZEOF", s);
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#define DEFINE(type, size) rb_hash_aset(s, rb_str_new_cstr(#type), INT2FIX(SIZEOF_##size))
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#define DEFINE_SIZE(type) rb_hash_aset(s, rb_str_new_cstr(#type), INT2FIX(sizeof(type)))
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% types.each do |type|
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% if sizes[type]
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#ifdef HAVE_TYPE_<%= type.tr_cpp %>
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DEFINE_SIZE(<%= type %>);
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#endif
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% next
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% end
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% cond = conditions[type]
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#if defined(SIZEOF_<%= type.tr_cpp %>) && SIZEOF_<%= type.tr_cpp %> != 0<%= " && #{cond}" if cond %>
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DEFINE(<%= type %>, <%= type.tr_cpp %>);
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#endif
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% end
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OBJ_FREEZE(s);
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#undef DEFINE
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Init_limits();
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}
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