clarified Document.Node.Name (again): canonical platform file;
identify document models by native java.io.File;
/* Title: Pure/Thy/thy_header.scala
Author: Makarius
Static theory header information.
*/
package isabelle
import scala.annotation.tailrec
import scala.collection.mutable
import scala.util.parsing.input.{Reader, CharSequenceReader}
import scala.util.matching.Regex
object Thy_Header extends Parse.Parser
{
/* bootstrap keywords */
type Keywords = List[(String, Keyword.Spec)]
type Abbrevs = List[(String, String)]
val CHAPTER = "chapter"
val SECTION = "section"
val SUBSECTION = "subsection"
val SUBSUBSECTION = "subsubsection"
val PARAGRAPH = "paragraph"
val SUBPARAGRAPH = "subparagraph"
val TEXT = "text"
val TXT = "txt"
val TEXT_RAW = "text_raw"
val THEORY = "theory"
val IMPORTS = "imports"
val KEYWORDS = "keywords"
val ABBREVS = "abbrevs"
val AND = "and"
val BEGIN = "begin"
private val bootstrap_header: Keywords =
List(
("%", Keyword.no_spec),
("(", Keyword.no_spec),
(")", Keyword.no_spec),
(",", Keyword.no_spec),
("::", Keyword.no_spec),
("=", Keyword.no_spec),
(AND, Keyword.no_spec),
(BEGIN, Keyword.quasi_command_spec),
(IMPORTS, Keyword.quasi_command_spec),
(KEYWORDS, Keyword.quasi_command_spec),
(ABBREVS, Keyword.quasi_command_spec),
(CHAPTER, (((Keyword.DOCUMENT_HEADING, Nil), Nil))),
(SECTION, (((Keyword.DOCUMENT_HEADING, Nil), Nil))),
(SUBSECTION, (((Keyword.DOCUMENT_HEADING, Nil), Nil))),
(SUBSUBSECTION, (((Keyword.DOCUMENT_HEADING, Nil), Nil))),
(PARAGRAPH, (((Keyword.DOCUMENT_HEADING, Nil), Nil))),
(SUBPARAGRAPH, (((Keyword.DOCUMENT_HEADING, Nil), Nil))),
(TEXT, (((Keyword.DOCUMENT_BODY, Nil), Nil))),
(TXT, (((Keyword.DOCUMENT_BODY, Nil), Nil))),
(TEXT_RAW, (((Keyword.DOCUMENT_RAW, Nil), Nil))),
(THEORY, ((Keyword.THY_BEGIN, Nil), List("theory"))),
("ML", ((Keyword.THY_DECL, Nil), List("ML"))))
private val bootstrap_keywords =
Keyword.Keywords.empty.add_keywords(bootstrap_header)
lazy val bootstrap_syntax: Outer_Syntax =
Outer_Syntax.init().add_keywords(bootstrap_header)
/* file name vs. theory name */
val PURE = "Pure"
val ML_BOOTSTRAP = "ML_Bootstrap"
val ML_ROOT = "ML_Root"
val ml_roots = List("ROOT0.ML" -> "ML_Root0", "ROOT.ML" -> ML_ROOT)
val bootstrap_thys = List(PURE, ML_BOOTSTRAP).map(a => a -> ("Bootstrap_" + a))
private val Base_Name = new Regex(""".*?([^/\\:]+)""")
private val Thy_Name = new Regex(""".*?([^/\\:]+)\.thy""")
def base_name(s: String): String =
s match { case Base_Name(name) => name case _ => error("Malformed import: " + quote(s)) }
def thy_name(s: String): Option[String] =
s match { case Thy_Name(name) => Some(name) case _ => None }
def thy_name_bootstrap(s: String): Option[String] =
s match {
case Thy_Name(name) =>
Some(bootstrap_thys.collectFirst({ case (a, b) if a == name => b }).getOrElse(name))
case Base_Name(name) => ml_roots.collectFirst({ case (a, b) if a == name => b })
case _ => None
}
def is_ml_root(theory: String): Boolean =
ml_roots.exists({ case (_, b) => b == theory })
def is_bootstrap(theory: String): Boolean =
bootstrap_thys.exists({ case (_, b) => b == theory })
/* header */
val header: Parser[Thy_Header] =
{
val opt_files =
$$$("(") ~! (rep1sep(name, $$$(",")) <~ $$$(")")) ^^ { case _ ~ x => x } |
success(Nil)
val keyword_spec =
atom("outer syntax keyword specification", _.is_name) ~ opt_files ~ tags ^^
{ case x ~ y ~ z => ((x, y), z) }
val keyword_decl =
rep1(string) ~
opt($$$("::") ~! keyword_spec ^^ { case _ ~ x => x }) ^^
{ case xs ~ y => xs.map((_, y.getOrElse(Keyword.no_spec))) }
val keyword_decls =
keyword_decl ~ rep($$$(AND) ~! keyword_decl ^^ { case _ ~ x => x }) ^^
{ case xs ~ yss => (xs :: yss).flatten }
val abbrevs =
rep1(text ~ ($$$("=") ~! text) ^^ { case a ~ (_ ~ b) => (a, b) })
val args =
position(theory_name) ~
(opt($$$(IMPORTS) ~! rep1(position(theory_name))) ^^
{ case None => Nil case Some(_ ~ xs) => xs }) ~
(opt($$$(KEYWORDS) ~! keyword_decls) ^^
{ case None => Nil case Some(_ ~ xs) => xs }) ~
(opt($$$(ABBREVS) ~! abbrevs) ^^
{ case None => Nil case Some(_ ~ xs) => xs }) ~
$$$(BEGIN) ^^
{ case x ~ ys ~ zs ~ ws ~ _ => Thy_Header(x, ys, zs, ws) }
val heading =
(command(CHAPTER) |
command(SECTION) |
command(SUBSECTION) |
command(SUBSUBSECTION) |
command(PARAGRAPH) |
command(SUBPARAGRAPH) |
command(TEXT) |
command(TXT) |
command(TEXT_RAW)) ~
tags ~! document_source
(rep(heading) ~ command(THEORY) ~ tags) ~! args ^^ { case _ ~ x => x }
}
/* read -- lazy scanning */
def read(reader: Reader[Char], start: Token.Pos): Thy_Header =
{
val token = Token.Parsers.token(bootstrap_keywords)
val toks = new mutable.ListBuffer[Token]
@tailrec def scan_to_begin(in: Reader[Char])
{
token(in) match {
case Token.Parsers.Success(tok, rest) =>
toks += tok
if (!tok.is_begin) scan_to_begin(rest)
case _ =>
}
}
scan_to_begin(reader)
parse(commit(header), Token.reader(toks.toList, start)) match {
case Success(result, _) => result
case bad => error(bad.toString)
}
}
def read(source: CharSequence, start: Token.Pos): Thy_Header =
read(new CharSequenceReader(source), start)
/* line-oriented text */
def header_text(doc: Line.Document): String =
{
val keywords = bootstrap_syntax.keywords
val toks = new mutable.ListBuffer[Token]
val iterator =
(for {
(toks, _) <-
doc.lines.iterator.scanLeft((List.empty[Token], Scan.Finished: Scan.Line_Context))(
{
case ((_, ctxt), line) => Token.explode_line(keywords, line.text, ctxt)
})
tok <- toks.iterator ++ Iterator.single(Token.newline)
} yield tok).dropWhile(tok => !tok.is_command(Thy_Header.THEORY))
@tailrec def until_begin
{
if (iterator.hasNext) {
val tok = iterator.next
toks += tok
if (!tok.is_begin) until_begin
}
}
until_begin
Token.implode(toks.toList)
}
}
sealed case class Thy_Header(
name: (String, Position.T),
imports: List[(String, Position.T)],
keywords: Thy_Header.Keywords,
abbrevs: Thy_Header.Abbrevs)
{
def decode_symbols: Thy_Header =
{
val f = Symbol.decode _
Thy_Header((f(name._1), name._2),
imports.map({ case (a, b) => (f(a), b) }),
keywords.map({ case (a, ((b, c), d)) => (f(a), ((f(b), c.map(f)), d.map(f))) }),
abbrevs.map({ case (a, b) => (f(a), f(b)) }))
}
}