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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.
require_relative '../tool/ruby_vm/helpers/c_escape'
class Prelude
include RubyVM::CEscape
LINE_LIMIT = 509 # by C89
def prelude_base(filename)
filename.chomp(".rb")
end
def prelude_name(filename)
"<internal:" + prelude_base(filename) + ">"
end
def initialize(output, preludes, vpath)
@output = output
@vpath = vpath
@builtin_count = 0
@preludes = {}
@mains = preludes.map do |filename|
@builtin_count += 1
translate(filename, filename)[0]
end
@preludes.delete_if {|_, (_, _, lines, sub)| sub && lines.empty?}
end
def translate(filename, sub = false)
idx = @preludes[filename]
return idx if idx
lines = []
start_line = nil
lineno = 0
result = [@preludes.size, @vpath.strip(filename), lines, sub]
@vpath.foreach(filename) do |line|
if line.respond_to?(:force_encoding)
enc = line.encoding
line.force_encoding("ASCII-8BIT")
end
line.rstrip!
lineno += 1
@preludes[filename] ||= result
comment = ($1 || '' if line.sub!(/(?:^|\s+)\#(?!\{)(?:$|(?:[#\s]|(?=\W))(.*))/, ''))
if !line.empty? or start_line
line << "\n"
start_line ||= lineno
end
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
# This library will be loaded before this,
# the order cannot be preserved
comment = "#{orig} #{comment}".rstrip
""
else
orig
end
end
comment.force_encoding(enc) if enc and comment
lines << [line, comment]
end
result << (start_line || 1)
result
end
end
Prelude.new(output, 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 "internal.h"
#include "internal/ruby_parser.h"
#include "internal/warnings.h"
#include "iseq.h"
#include "ruby/internal/attr/nonstring.h"
#include "ruby/ruby.h"
#include "vm_core.h"
COMPILER_WARNING_PUSH
#if __has_warning("-Wstring-concatenation")
COMPILER_WARNING_IGNORED(-Wstring-concatenation)
#endif
% preludes = @preludes.values.sort
% preludes.each {|i, prelude, lines, sub|
% name = prelude_name(*prelude)
static const char prelude_name<%=i%><%=%>[] = <%=rstring2cstr(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
RBIMPL_ATTR_NONSTRING() char L<%=beg%><%=%>[<%=size%><%=%>]; /* <%=beg+1%>..<%=n%> */
% size = line.size
% beg = n
% }
% if size > 0
RBIMPL_ATTR_NONSTRING() char L<%=beg%><%=%>[<%=size%><%=%>]; /* <%=beg+1%>..<%=lines.size+1%> */
% end
} prelude_code<%=i%><%=%> = {
% size = 0
#line 1 <%=rstring2cstr(prelude)%>
% lines.each_with_index {|(line, comment), n|
% if size + line.size >= Prelude::LINE_LIMIT
% size = 0
,
#line <%=n+1%> <%=rstring2cstr(prelude)%>
% end
% size += line.size
<%=rstring2cstr(line)%><%if comment%><%=commentify(comment)%><%end%>
% }
#line <%=_erbout.count("\n")+2%> "<%=@output%>"
};
% }
COMPILER_WARNING_POP
#define PRELUDE_NAME(n) rb_usascii_str_new_static(prelude_name##n, sizeof(prelude_name##n)-1)
#define PRELUDE_CODE(n) rb_utf8_str_new_static(prelude_code##n.L0, sizeof(prelude_code##n))
% end
% if @builtin_count > 0
#define PRELUDE_MATCH(n) \
(((sizeof(prelude_name<%='##'%><%=%>n) - prefix_len - 2) == namelen) && \
(strncmp(prelude_name<%='##'%><%=%>n + prefix_len, feature_name, namelen) == 0))
VALUE
rb_builtin_find(const char *feature_name, VALUE *name_str, int *start_line)
{
const size_t prefix_len = rb_strlen_lit("<internal:");
size_t namelen = strlen(feature_name);
#define PRELUDE_FOUND(n, l) \
(*name_str = PRELUDE_NAME(n), *start_line = (l), PRELUDE_CODE(n))
% @preludes.each_value do |i, prelude, lines, sub, start_line|
% if sub
if (PRELUDE_MATCH(<%=i%>)) return PRELUDE_FOUND(<%=i%>, <%=start_line%>);
% end
% end
#undef PRELUDE_FOUND
return Qnil;
}
%end
% init_name = @output && @output[/\w+(?=_prelude.c\b)/] || 'prelude'
void
Init_<%=init_name%><%=%>(void)
{
}
<%end -%>
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