1 /* Title: Pure/Thy/thy_load.scala
4 Primitives for loading theory files.
10 import java.io.{File => JFile}
15 def thy_path(path: Path): Path = path.ext("thy")
19 class Thy_Load(preloaded: Set[String] = Set.empty)
21 /* loaded theories provided by prover */
23 private var loaded_theories: Set[String] = preloaded
25 def register_thy(thy_name: String): Unit =
26 synchronized { loaded_theories += thy_name }
28 def is_loaded(thy_name: String): Boolean =
29 synchronized { loaded_theories.contains(thy_name) }
32 /* file-system operations */
34 def append(dir: String, source_path: Path): String =
35 (Path.explode(dir) + source_path).implode
37 def read_header(name: Document.Node.Name): Thy_Header =
39 val file = new JFile(name.node)
40 if (!file.exists || !file.isFile) error("No such file: " + quote(file.toString))
47 private def import_name(dir: String, s: String): Document.Node.Name =
49 val theory = Thy_Header.base_name(s)
50 if (is_loaded(theory)) Document.Node.Name(theory, "", theory)
52 val path = Path.explode(s)
53 val node = append(dir, Thy_Load.thy_path(path))
54 val dir1 = append(dir, path.dir)
55 Document.Node.Name(node, dir1, theory)
59 def check_header(name: Document.Node.Name, header: Thy_Header): Document.Node.Deps =
61 val name1 = header.name
62 val imports = header.imports.map(import_name(name.dir, _))
63 // FIXME val uses = header.uses.map(p => (append(name.dir, Path.explode(p._1)), p._2))
64 val uses = header.uses
65 if (name.theory != name1)
66 error("Bad file name " + Thy_Load.thy_path(Path.basic(name.theory)) +
67 " for theory " + quote(name1))
68 Document.Node.Deps(imports, header.keywords, uses)
71 def check_thy(name: Document.Node.Name): Document.Node.Deps =
72 check_header(name, read_header(name))