/* Title: Pure/PIDE/resources.scala
Author: Makarius
Resources for theories and auxiliary files.
*/
package isabelle
import scala.annotation.tailrec
import scala.util.parsing.input.Reader
import java.io.{File => JFile}
class Resources(
val session_name: String,
val session_base: Sessions.Base,
val log: Logger = No_Logger)
{
val thy_info = new Thy_Info(this)
def thy_path(path: Path): Path = path.ext("thy")
/* file-system operations */
def append(dir: String, source_path: Path): String =
(Path.explode(dir) + source_path).expand.implode
def append_file(dir: String, raw_name: String): String =
if (Path.is_valid(raw_name)) append(dir, Path.explode(raw_name))
else raw_name
/* source files of Isabelle/ML bootstrap */
def source_file(raw_name: String): Option[String] =
{
if (Path.is_wellformed(raw_name)) {
if (Path.is_valid(raw_name)) {
def check(p: Path): Option[Path] = if (p.is_file) Some(p) else None
val path = Path.explode(raw_name)
val path1 =
if (path.is_absolute || path.is_current) check(path)
else {
check(Path.explode("~~/src/Pure") + path) orElse
(if (Isabelle_System.getenv("ML_SOURCES") == "") None
else check(Path.explode("$ML_SOURCES") + path))
}
Some(File.platform_path(path1 getOrElse path))
}
else None
}
else Some(raw_name)
}
/* theory files */
def loaded_files(syntax: Outer_Syntax, text: String): List[String] =
if (syntax.load_commands_in(text)) {
val spans = syntax.parse_spans(text)
spans.iterator.map(Command.span_files(syntax, _)._1).flatten.toList
}
else Nil
def import_name(dir: String, s: String): Document.Node.Name =
{
val theory0 = Thy_Header.base_name(s)
val theory =
if (Long_Name.is_qualified(theory0) || session_base.global_theories.contains(theory0)) theory0
else Long_Name.qualify(session_name, theory0)
session_base.known_theories.get(theory) orElse session_base.known_theories.get(theory0) match
{
case Some(name) if session_base.loaded_theory(name) => Document.Node.Name.theory(name.theory)
case Some(name) => name
case None =>
val path = Path.explode(s)
val node = append(dir, thy_path(path))
val master_dir = append(dir, path.dir)
Document.Node.Name(node, master_dir, theory)
}
}
def with_thy_reader[A](name: Document.Node.Name, f: Reader[Char] => A): A =
{
val path = Path.explode(name.node)
if (!path.is_file) error("No such file: " + path.toString)
val reader = Scan.byte_reader(path.file)
try { f(reader) } finally { reader.close }
}
def check_thy_reader(node_name: Document.Node.Name, reader: Reader[Char],
start: Token.Pos = Token.Pos.command, strict: Boolean = true): Document.Node.Header =
{
if (node_name.is_theory && reader.source.length > 0) {
try {
val header = Thy_Header.read(reader, start, strict).decode_symbols
val base_name = Long_Name.base_name(node_name.theory)
val (name, pos) = header.name
if (base_name != name)
error("Bad theory name " + quote(name) +
" for file " + thy_path(Path.basic(base_name)) + Position.here(pos) +
Completion.report_names(pos, 1, List((base_name, ("theory", base_name)))))
val imports =
header.imports.map({ case (s, pos) => (import_name(node_name.master_dir, s), pos) })
Document.Node.Header(imports, header.keywords, header.abbrevs)
}
catch { case exn: Throwable => Document.Node.bad_header(Exn.message(exn)) }
}
else Document.Node.no_header
}
def check_thy(name: Document.Node.Name, start: Token.Pos = Token.Pos.command,
strict: Boolean = true): Document.Node.Header =
with_thy_reader(name, check_thy_reader(name, _, start, strict))
/* special header */
def special_header(name: Document.Node.Name): Option[Document.Node.Header] =
if (Thy_Header.is_ml_root(name.theory))
Some(Document.Node.Header(
List((import_name(name.master_dir, Thy_Header.ML_BOOTSTRAP), Position.none))))
else if (Thy_Header.is_bootstrap(name.theory))
Some(Document.Node.Header(
List((import_name(name.master_dir, Thy_Header.PURE), Position.none))))
else None
/* blobs */
def undefined_blobs(nodes: Document.Nodes): List[Document.Node.Name] =
(for {
(node_name, node) <- nodes.iterator
if !session_base.loaded_theory(node_name)
cmd <- node.load_commands.iterator
name <- cmd.blobs_undefined.iterator
} yield name).toList
/* document changes */
def parse_change(
reparse_limit: Int,
previous: Document.Version,
doc_blobs: Document.Blobs,
edits: List[Document.Edit_Text]): Session.Change =
Thy_Syntax.parse_change(this, reparse_limit, previous, doc_blobs, edits)
def commit(change: Session.Change) { }
}