author | wenzelm |
Sun, 12 May 2013 17:56:53 +0200 | |
changeset 51945 | 5b1ac9843f02 |
parent 51620 | 7c39677f9ea0 |
child 52065 | 78f2475aa126 |
permissions | -rw-r--r-- |
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/* Title: Pure/System/options.scala |
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Author: Makarius |
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System options with external string representation. |
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*/ |
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package isabelle |
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import java.util.Calendar |
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object Options |
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{ |
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type Spec = (String, Option[String]) |
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val empty: Options = new Options() |
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/* representation */ |
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sealed abstract class Type |
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{ |
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def print: String = Library.lowercase(toString) |
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} |
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case object Bool extends Type |
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case object Int extends Type |
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case object Real extends Type |
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case object String extends Type |
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case object Unknown extends Type |
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case class Opt(name: String, typ: Type, value: String, default_value: String, |
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description: String, section: String) |
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{ |
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private def print(default: Boolean): String = |
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{ |
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val x = if (default) default_value else value |
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"option " + name + " : " + typ.print + " = " + |
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(if (typ == Options.String) quote(x) else x) + |
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(if (description == "") "" else "\n -- " + quote(description)) |
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} |
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def print: String = print(false) |
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def print_default: String = print(true) |
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def title(strip: String): String = |
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{ |
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val words = space_explode('_', name) |
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val words1 = |
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words match { |
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case word :: rest if word == strip => rest |
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case _ => words |
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} |
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words1.map(Library.capitalize).mkString(" ") |
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} |
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def unknown: Boolean = typ == Unknown |
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} |
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/* parsing */ |
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private val SECTION = "section" |
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private val OPTION = "option" |
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private val OPTIONS = Path.explode("etc/options") |
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private val PREFS_DIR = Path.explode("$ISABELLE_HOME_USER/etc") |
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private val PREFS = PREFS_DIR + Path.basic("preferences") |
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private val PREFS_BACKUP = PREFS_DIR + Path.basic("preferences~") |
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lazy val options_syntax = |
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Outer_Syntax.init() + ":" + "=" + "--" + |
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(SECTION, Keyword.THY_HEADING2) + (OPTION, Keyword.THY_DECL) |
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lazy val prefs_syntax = Outer_Syntax.init() + "=" |
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object Parser extends Parse.Parser |
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{ |
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val option_name = atom("option name", _.is_xname) |
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val option_type = atom("option type", _.is_ident) |
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val option_value = |
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opt(token("-", tok => tok.is_sym_ident && tok.content == "-")) ~ atom("nat", _.is_nat) ^^ |
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{ case s ~ n => if (s.isDefined) "-" + n else n } | |
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atom("option value", tok => tok.is_name || tok.is_float) |
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val option_entry: Parser[Options => Options] = |
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{ |
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command(SECTION) ~! text ^^ |
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{ case _ ~ a => (options: Options) => options.set_section(a) } | |
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command(OPTION) ~! (option_name ~ keyword(":") ~ option_type ~ |
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keyword("=") ~ option_value ~ (keyword("--") ~! text ^^ { case _ ~ x => x } | success(""))) ^^ |
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{ case _ ~ (a ~ _ ~ b ~ _ ~ c ~ d) => (options: Options) => options.declare(a, b, c, d) } |
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} |
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val prefs_entry: Parser[Options => Options] = |
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{ |
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option_name ~ (keyword("=") ~! option_value) ^^ |
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{ case a ~ (_ ~ b) => (options: Options) => options.add_permissive(a, b) } |
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} |
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def parse_file(syntax: Outer_Syntax, parser: Parser[Options => Options], |
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options: Options, file: Path): Options = |
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{ |
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val toks = syntax.scan(File.read(file)) |
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val ops = |
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parse_all(rep(parser), Token.reader(toks, file.implode)) match { |
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case Success(result, _) => result |
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case bad => error(bad.toString) |
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} |
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try { (options.set_section("") /: ops) { case (opts, op) => op(opts) } } |
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catch { case ERROR(msg) => error(msg + Position.here(file.position)) } |
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} |
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} |
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def init_defaults(): Options = |
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{ |
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var options = empty |
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for { |
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dir <- Isabelle_System.components() |
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file = dir + OPTIONS if file.is_file |
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} { options = Parser.parse_file(options_syntax, Parser.option_entry, options, file) } |
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options |
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} |
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def init(): Options = init_defaults().load_prefs() |
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/* encode */ |
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val encode: XML.Encode.T[Options] = (options => options.encode) |
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"isabelle options" prints Isabelle system options;
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/* command line entry point */ |
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"isabelle options" prints Isabelle system options;
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def main(args: Array[String]) |
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{ |
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Command_Line.tool { |
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args.toList match { |
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case export_file :: more_options => |
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val options = (Options.init() /: more_options)(_ + _) |
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if (export_file == "") java.lang.System.out.println(options.print) |
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else File.write(Path.explode(export_file), YXML.string_of_body(options.encode)) |
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0 |
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case _ => error("Bad arguments:\n" + cat_lines(args)) |
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} |
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} |
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} |
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} |
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final class Options private( |
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val options: Map[String, Options.Opt] = Map.empty, |
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val section: String = "") |
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{ |
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override def toString: String = options.iterator.mkString("Options (", ",", ")") |
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def print: String = cat_lines(options.toList.sortBy(_._1).map(p => p._2.print)) |
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def description(name: String): String = check_name(name).description |
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/* check */ |
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def check_name(name: String): Options.Opt = |
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options.get(name) match { |
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case Some(opt) if !opt.unknown => opt |
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case _ => error("Unknown option " + quote(name)) |
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} |
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private def check_type(name: String, typ: Options.Type): Options.Opt = |
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{ |
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val opt = check_name(name) |
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if (opt.typ == typ) opt |
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else error("Ill-typed option " + quote(name) + " : " + opt.typ.print + " vs. " + typ.print) |
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} |
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/* basic operations */ |
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private def put[A](name: String, typ: Options.Type, value: String): Options = |
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{ |
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val opt = check_type(name, typ) |
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new Options(options + (name -> opt.copy(value = value)), section) |
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} |
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private def get[A](name: String, typ: Options.Type, parse: String => Option[A]): A = |
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{ |
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val opt = check_type(name, typ) |
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parse(opt.value) match { |
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case Some(x) => x |
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case None => |
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error("Malformed value for option " + quote(name) + |
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" : " + typ.print + " =\n" + quote(opt.value)) |
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} |
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} |
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/* internal lookup and update */ |
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class Bool_Access |
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{ |
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def apply(name: String): Boolean = get(name, Options.Bool, Properties.Value.Boolean.unapply) |
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def update(name: String, x: Boolean): Options = |
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put(name, Options.Bool, Properties.Value.Boolean(x)) |
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} |
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val bool = new Bool_Access |
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class Int_Access |
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{ |
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def apply(name: String): Int = get(name, Options.Int, Properties.Value.Int.unapply) |
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def update(name: String, x: Int): Options = |
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put(name, Options.Int, Properties.Value.Int(x)) |
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} |
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val int = new Int_Access |
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class Real_Access |
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{ |
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def apply(name: String): Double = get(name, Options.Real, Properties.Value.Double.unapply) |
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def update(name: String, x: Double): Options = |
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put(name, Options.Real, Properties.Value.Double(x)) |
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} |
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val real = new Real_Access |
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class String_Access |
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{ |
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def apply(name: String): String = get(name, Options.String, s => Some(s)) |
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def update(name: String, x: String): Options = put(name, Options.String, x) |
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} |
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val string = new String_Access |
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class Seconds_Access |
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def apply(name: String): Time = Time.seconds(real(name)) |
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} |
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val seconds = new Seconds_Access |
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