Top Level Namespace

Defined Under Namespace

Classes: Object, Ripper

Constant Summary collapse

SCRIPT_LINES__ =

When a Hash is assigned to SCRIPT_LINES__ the contents of files loaded after the assignment will be added as an Array of lines with the file name as the key.

Qnil

Instance Method Summary collapse

Instance Method Details

#check_arity(h) ⇒ Object 



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# File 'tools/generate.rb', line 125

def check_arity(h)
  invalid = false
  h.each do |event, list|
    unless list.map {|line, arity| arity }.uniq.size == 1
      invalid = true
      locations = list.map {|line, a| "#{line}:#{a}" }.join(', ')
      $stderr.puts "arity crash [event=#{event}]: #{locations}"
    end
  end
  abort if invalid
end

#generate_eventids1(ids) ⇒ Object 



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# File 'tools/generate.rb', line 69

def generate_eventids1(ids)
  buf = ""
  buf << %Q[static struct {\n]
  ids.each do |id, arity|
    buf << %Q[    ID id_#{id};\n]
  end
  buf << %Q[} ripper_parser_ids;\n]
  buf << %Q[\n]
  ids.each do |id, arity|
    buf << %Q[#define ripper_id_#{id} ripper_parser_ids.id_#{id}\n]
  end
  buf << %Q[\n]
  buf << %Q[static void\n]
  buf << %Q[ripper_init_eventids1(void)\n]
  buf << %Q[{\n]
  buf << %Q[#define set_id1(name) ripper_id_##name = rb_intern_const("on_"#name)\n]
  ids.each do |id, arity|
    buf << %Q[    set_id1(#{id});\n]
  end
  buf << %Q[}\n]
  buf << %Q[\n]
  buf << %Q[static void\n]
  buf << %Q[ripper_init_eventids1_table(VALUE self)\n]
  buf << %Q[{\n]
  buf << %Q[    VALUE h = rb_hash_new();\n]
  buf << %Q[    rb_define_const(self, "PARSER_EVENT_TABLE", h);\n]
  ids.each do |id, arity|
    buf << %Q[    rb_hash_aset(h, intern_sym("#{id}"), INT2FIX(#{arity}));\n]
  end
  buf << %Q[}\n]
  buf
end

#generate_eventids2_table(ids) ⇒ Object 



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# File 'tools/generate.rb', line 102

def generate_eventids2_table(ids)
  buf = ""
  buf << %Q[static void\n]
  buf << %Q[ripper_init_eventids2_table(VALUE self)\n]
  buf << %Q[{\n]
  buf << %Q[    VALUE h = rb_hash_new();\n]
  buf << %Q[    rb_define_const(self, "SCANNER_EVENT_TABLE", h);\n]
  ids.each do |id|
    buf << %Q[    rb_hash_aset(h, intern_sym("#{id}"), INT2FIX(1));\n]
  end
  buf << %Q[}\n]
  buf
end

#grammar(f, out) ⇒ Object 



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# File 'tools/preproc.rb', line 63

def grammar(f, out)
  while line = f.gets
    case line
    when %r</\*%%%\*/>
      out << '#if 0' << $/
    when %r</\*%c%\*/>
      out << '/*' << $/
    when %r</\*%c>
      out << '*/' << $/
    when %r</\*%>
      out << '#endif' << $/
    when %r<%\*/>
      out << $/
    when /\A%%/
      out << '%%' << $/
      return
    else
      out << line
    end
  end
end

#main ⇒ Object 



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# File 'extconf.rb', line 6

def main
  unless find_executable('bison')
    unless File.exist?('ripper.c') or File.exist?("#{$srcdir}/ripper.c")
      raise 'missing bison; abort'
    end
  end
  $objs = %w(ripper.o)
  $cleanfiles.concat %w(ripper.y ripper.c ripper.E ripper.output y.output eventids1.c eventids2table.c)
  $defs << '-DRIPPER'
  $defs << '-DRIPPER_DEBUG' if $debug
  $VPATH << '$(topdir)' << '$(top_srcdir)'
  $INCFLAGS << ' -I$(topdir) -I$(top_srcdir)'
  create_makefile 'ripper'
end

#prelude(f, out) ⇒ Object 



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# File 'tools/preproc.rb', line 41

def prelude(f, out)
  while line = f.gets
    case line
    when %r</\*%%%\*/>
      out << '/*' << $/
    when %r</\*%>
      out << '*/' << $/
    when %r<%\*/>
      out << $/
    when /\A%%/
      out << '%%' << $/
      return
    when /\A%token/
      out << line.sub(/<\w+>/, '<val>')
    when /\A%type/
      out << line.sub(/<\w+>/, '<val>')
    else
      out << line
    end
  end
end

#read_ids1(path) ⇒ Object 



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# File 'tools/generate.rb', line 116

def read_ids1(path)
  strip_locations(read_ids1_with_locations(path))
end

#read_ids1_with_locations(path) ⇒ Object 



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# File 'tools/generate.rb', line 137

def read_ids1_with_locations(path)
  h = {}
  File.open(path) {|f|
    f.each do |line|
      next if /\A\#\s*define\s+dispatch/ =~ line
      next if /ripper_dispatch/ =~ line
      line.scan(/\bdispatch(\d)\((\w+)/) do |arity, event|
        (h[event] ||= []).push [f.lineno, arity.to_i]
      end
    end
  }
  h
end

#read_ids2(path) ⇒ Object 



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# File 'tools/generate.rb', line 151

def read_ids2(path)
  src = File.open(path) {|f| f.read}
  ids2 = src.scan(/ID\s+ripper_id_(\w+)/).flatten.uniq.sort
  diff = src.scan(/set_id2\((\w+)\);/).flatten - ids2
  unless diff.empty?
    abort "missing scanner IDs: #{diff}"
  end
  return ids2
end

#strip_locations(h) ⇒ Object 



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# File 'tools/generate.rb', line 120

def strip_locations(h)
  h.map {|event, list| [event, list.first[1]] }\
      .sort_by {|event, arity| event.to_s }
end

#usage(msg) ⇒ Object 



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# File 'tools/generate.rb', line 63

def usage(msg)
  $stderr.puts msg
  $stderr.puts @parser.help
  exit false
end

#usercode(f, out) ⇒ Object 



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# File 'tools/preproc.rb', line 85

def usercode(f, out)
  while line = f.gets
    out << line
  end
end