author | wenzelm |
Tue, 05 Jul 2011 22:39:15 +0200 | |
changeset 43673 | 29eb1cd29961 |
parent 43652 | dcd0b667f73d |
child 43674 | 3ddaa75c669c |
permissions | -rw-r--r-- |
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/* Title: Pure/Thy/thy_info.scala |
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Author: Makarius |
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Theory and file dependencies. |
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*/ |
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package isabelle |
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Thy_Info.dependencies: ignore already loaded theories, according to initial prover session status;
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object Thy_Info |
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{ |
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/* protocol messages */ |
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object Loaded_Theory { |
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def unapply(msg: XML.Tree): Option[String] = |
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msg match { |
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case XML.Elem(Markup(Markup.LOADED_THEORY, List((Markup.NAME, name))), _) => Some(name) |
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case _ => None |
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} |
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} |
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} |
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class Thy_Info(thy_load: Thy_Load) |
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{ |
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/* messages */ |
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private def show_path(names: List[String]): String = |
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names.map(quote).mkString(" via ") |
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private def cycle_msg(names: List[String]): String = |
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"Cyclic dependency of " + show_path(names) |
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private def required_by(s: String, initiators: List[String]): String = |
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if (initiators.isEmpty) "" |
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else s + "(required by " + show_path(initiators.reverse) + ")" |
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/* dependencies */ |
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type Deps = Map[String, Exn.Result[(String, Thy_Header.Header)]] // name -> (text, header) |
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private def require_thys(ignored: String => Boolean, |
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initiators: List[String], dir: Path, deps: Deps, strs: List[String]): Deps = |
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(deps /: strs)(require_thy(ignored, initiators, dir, _, _)) |
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private def require_thy(ignored: String => Boolean, |
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initiators: List[String], dir: Path, deps: Deps, str: String): Deps = |
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{ |
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val path = Path.explode(str) |
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val name = path.base.implode |
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parents:
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if (deps.isDefinedAt(name) || ignored(name)) deps |
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else { |
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val dir1 = dir + path.dir |
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try { |
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if (initiators.contains(name)) error(cycle_msg(initiators)) |
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val (text, header) = |
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try { thy_load.check_thy(dir1, name) } |
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catch { |
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case ERROR(msg) => |
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cat_error(msg, "The error(s) above occurred while examining theory " + |
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quote(name) + required_by("\n", initiators)) |
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} |
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require_thys(ignored, name :: initiators, dir1, |
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deps + (name -> Exn.Res(text, header)), header.imports) |
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} |
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catch { case e: Throwable => deps + (name -> Exn.Exn(e)) } |
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} |
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} |
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def dependencies(dir: Path, str: String): Deps = |
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require_thy(thy_load.is_loaded, Nil, dir, Map.empty, str) // FIXME capture errors in str (!??) |
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} |