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<%
# This file is interpreted by $(BASERUBY) and miniruby.
# $(BASERUBY) is used for miniprelude.c.
# miniruby is used for prelude.c.
# Since $(BASERUBY) may be older than Ruby 1.9,
# Ruby 1.9 feature should not be used.
class Prelude
LINE_LIMIT = 509 # by C89
C_ESC = {
"/*" => "/\\*",
"*/" => "*\\/",
"\\" => "\\\\",
'"' => '\"',
"\n" => '\n',
}
0x00.upto(0x1f) {|ch| C_ESC[[ch].pack("C")] ||= "\\%03o" % ch }
0x7f.upto(0xff) {|ch| C_ESC[[ch].pack("C")] = "\\%03o" % ch }
C_ESC_PAT = Regexp.union(*C_ESC.keys)
def c_esc(str)
str.gsub(C_ESC_PAT) { C_ESC[$&] }
end
def prelude_base(filename)
filename.chomp(".rb")
end
def prelude_name(filename)
"<internal:" + prelude_base(filename) + ">"
end
def initialize(init_name, preludes, vpath)
@init_name = init_name
@have_sublib = false
@vpath = vpath
@preludes = {}
@mains = preludes.map {|filename| translate(filename)[0]}
@preludes.delete_if {|_, (_, _, lines, sub)| sub && lines.empty?}
end
def translate(filename, sub = false)
idx = @preludes[filename]
return idx if idx
lines = []
result = [@preludes.size, @vpath.strip(filename), lines, sub]
@vpath.foreach(filename) do |line|
@preludes[filename] ||= result
comment = ($1 || '' if line.sub!(/(?:^|\s+)\#(?:$|[#\s](.*))/, ''))
if line.size > LINE_LIMIT
raise "#{filename}:#{lines.size+1}: too long line"
end
line.sub!(/require(_relative)?\s*\(?\s*(["'])(.*?)(?:\.rb)?\2\)?/) do
orig, rel, path = $&, $2, $3
if rel
path = File.join(File.dirname(filename), path)
nil while path.gsub!(%r'(\A|/)(?!\.\.?/)[^/]+/\.\.(?:/|\z)', '')
end
path = translate("#{path}.rb", true) rescue nil
if path
@have_sublib = true
"TMP_RUBY_PREFIX.require(#{path[0]})"
else
orig
end
end
lines << [line, comment]
end
result
end
end
Prelude.new(output && output[/\w+(?=_prelude.c\b)/] || 'prelude', ARGV, vpath).instance_eval do
-%>
/* -*-c-*-
THIS FILE WAS AUTOGENERATED BY template/prelude.c.tmpl. DO NOT EDIT.
sources: <%= @preludes.map {|n,*| prelude_base(n)}.join(', ') %><%=%>
*/
%unless @preludes.empty?
#include "ruby/ruby.h"
#include "internal.h"
#include "vm_core.h"
#include "iseq.h"
% preludes = @preludes.values.sort
% preludes.each {|i, prelude, lines, sub|
% name = prelude_name(*prelude)
static const char prelude_name<%=i%><%=%>[] = "<%=c_esc(name)%>";
static const struct {
% size = beg = 0
% lines.each_with_index {|(line, comment), n|
% if size + line.size < Prelude::LINE_LIMIT
% size += line.size
% next
% end
char L<%=beg%><%=%>[<%=size%><%=%>]; /* <%=beg+1%>..<%=n%> */
% size = line.size
% beg = n
% }
% if size > 0
char L<%=beg%><%=%>[<%=size%><%=%>]; /* <%=beg+1%>..<%=lines.size+1%> */
% end
} prelude_code<%=i%><%=%> = {
% size = 0
#line 1 "<%=c_esc(prelude)%>"
% lines.each_with_index {|(line, comment), n|
% if size + line.size >= Prelude::LINE_LIMIT
% size = 0
,
#line <%=n+1%> "<%=c_esc(prelude)%>"
% end
% size += line.size
"<%=c_esc(line)%>"<%if comment%>/* <%=c_esc(comment)%> */<%end%>
% }
#line <%=_erbout.count("\n")+2%> "<%=@init_name%>.c"
};
% }
% if @have_sublib
#define PRELUDE_COUNT <%=preludes.size%>
struct prelude_env {
volatile VALUE prefix_path;
#if PRELUDE_COUNT > 0
char loaded[PRELUDE_COUNT];
#endif
};
static VALUE
prelude_prefix_path(VALUE self)
{
struct prelude_env *ptr = DATA_PTR(self);
return ptr->prefix_path;
}
% end
% unless preludes.empty?
#define PRELUDE_NAME(n) rb_usascii_str_new_static(prelude_name##n, sizeof(prelude_name##n)-1)
#define PRELUDE_CODE(n) rb_usascii_str_new_static(prelude_code##n.L0, sizeof(prelude_code##n))
#if defined __GNUC__ && __GNUC__ >= 5
# pragma GCC diagnostic push
# pragma GCC diagnostic error "-Wmissing-field-initializers"
#endif
static void
prelude_eval(VALUE code, VALUE name, int line)
{
static const rb_compile_option_t optimization = {
TRUE, /* int inline_const_cache; */
TRUE, /* int peephole_optimization; */
TRUE, /* int tailcall_optimization; */
TRUE, /* int specialized_instruction; */
TRUE, /* int operands_unification; */
TRUE, /* int instructions_unification; */
TRUE, /* int stack_caching; */
TRUE, /* int frozen_string_literal; */
FALSE, /* int debug_frozen_string_literal; */
FALSE, /* unsigned int coverage_enabled; */
0, /* int debug_level; */
};
rb_ast_t *ast = rb_parser_compile_string_path(rb_parser_new(), name, code, line);
if (!ast->body.root) {
rb_ast_dispose(ast);
rb_exc_raise(rb_errinfo());
}
rb_iseq_eval(rb_iseq_new_with_opt(&ast->body, name, name, Qnil, INT2FIX(line),
NULL, ISEQ_TYPE_TOP, &optimization));
rb_ast_dispose(ast);
}
#if defined __GNUC__ && __GNUC__ >= 5
# pragma GCC diagnostic pop
#endif
% end
% if @have_sublib
static VALUE
prelude_require(VALUE self, VALUE nth)
{
struct prelude_env *ptr = DATA_PTR(self);
VALUE code, name;
int n = FIX2INT(nth);
if (n > PRELUDE_COUNT) return Qfalse;
if (ptr->loaded[n]) return Qfalse;
ptr->loaded[n] = 1;
switch (n) {
% @preludes.each_value do |i, prelude, lines, sub|
% if sub
case <%=i%><%=%>:
code = PRELUDE_CODE(<%=i%><%=%>);
name = PRELUDE_NAME(<%=i%><%=%>);
break;
% end
% end
default:
return Qfalse;
}
prelude_eval(code, name, 1);
return Qtrue;
}
% end
%end
void
Init_<%=@init_name%><%=%>(void)
{
%unless @preludes.empty?
% if @have_sublib
struct prelude_env memo;
ID name = rb_intern("TMP_RUBY_PREFIX");
VALUE prelude = Data_Wrap_Struct(rb_cData, 0, 0, &memo);
memo.prefix_path = rb_const_remove(rb_cObject, name);
rb_const_set(rb_cObject, name, prelude);
rb_define_singleton_method(prelude, "to_s", prelude_prefix_path, 0);
% end
% if @have_sublib
memset(memo.loaded, 0, sizeof(memo.loaded));
rb_define_singleton_method(prelude, "require", prelude_require, 1);
% end
% preludes.each do |i, prelude, lines, sub|
% next if sub
prelude_eval(PRELUDE_CODE(<%=i%><%=%>), PRELUDE_NAME(<%=i%><%=%>), 1);
% end
% if @have_sublib
rb_gc_force_recycle(prelude);
% end
#if 0
% preludes.length.times {|i|
printf("%.*s", (int)sizeof(prelude_code<%=i%><%=%>), prelude_code<%=i%><%=%>.L0);
% }
#endif
%end
}
<%end -%>
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