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Thy.thy_header.scala Maven / Gradle / Ivy
/* 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
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"
val bootstrap_header: Keywords =
List(
("%", Keyword.Spec.none),
("(", Keyword.Spec.none),
(")", Keyword.Spec.none),
(",", Keyword.Spec.none),
("::", Keyword.Spec.none),
("=", Keyword.Spec.none),
(AND, Keyword.Spec.none),
(BEGIN, Keyword.Spec(Keyword.QUASI_COMMAND)),
(IMPORTS, Keyword.Spec(Keyword.QUASI_COMMAND)),
(KEYWORDS, Keyword.Spec(Keyword.QUASI_COMMAND)),
(ABBREVS, Keyword.Spec(Keyword.QUASI_COMMAND)),
(CHAPTER, Keyword.Spec(Keyword.DOCUMENT_HEADING)),
(SECTION, Keyword.Spec(Keyword.DOCUMENT_HEADING)),
(SUBSECTION, Keyword.Spec(Keyword.DOCUMENT_HEADING)),
(SUBSUBSECTION, Keyword.Spec(Keyword.DOCUMENT_HEADING)),
(PARAGRAPH, Keyword.Spec(Keyword.DOCUMENT_HEADING)),
(SUBPARAGRAPH, Keyword.Spec(Keyword.DOCUMENT_HEADING)),
(TEXT, Keyword.Spec(Keyword.DOCUMENT_BODY)),
(TXT, Keyword.Spec(Keyword.DOCUMENT_BODY)),
(TEXT_RAW, Keyword.Spec(Keyword.DOCUMENT_RAW)),
(THEORY, Keyword.Spec(Keyword.THY_BEGIN, tags = List("theory"))),
("ML", Keyword.Spec(Keyword.THY_DECL, tags = 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_roots = List("ROOT0.ML" -> "ML_Root0", "ROOT.ML" -> "ML_Root")
val bootstrap_thys = List(PURE, ML_BOOTSTRAP).map(a => a -> ("Bootstrap_" + a))
val bootstrap_global_theories = (ml_roots ::: bootstrap_thys).map(p => (p._2 -> PURE))
private val Thy_File_Name = new Regex(""".*?([^/\\:]+)\.thy""")
private val Import_Name = new Regex(""".*?([^/\\:]+)""")
def is_base_name(s: String): Boolean =
s != "" && !s.exists("/\\:".contains(_))
def import_name(s: String): String =
s match { case Import_Name(name) => name case _ => error("Malformed import: " + quote(s)) }
def theory_name(s: String): String =
s match {
case Thy_File_Name(name) => bootstrap_name(name)
case Import_Name(name) =>
ml_roots.collectFirst({ case (a, b) if a == name => b }).getOrElse("")
case _ => ""
}
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 })
def bootstrap_name(theory: String): String =
bootstrap_thys.collectFirst({ case (a, b) if a == theory => b }).getOrElse(theory)
/* header */
val header: Parser[Thy_Header] =
{
val opt_files =
$$$("(") ~! (rep1sep(name, $$$(",")) <~ $$$(")")) ^^ { case _ ~ x => x } |
success(Nil)
val keyword_spec =
atom("outer syntax keyword specification", _.is_name) ~ opt_files ~ tags ^^
{ case x ~ y ~ z => Keyword.Spec(x, y, z) }
val keyword_decl =
rep1(string) ~
opt($$$("::") ~! keyword_spec ^^ { case _ ~ x => x }) ^^
{ case xs ~ y => xs.map((_, y.getOrElse(Keyword.Spec.none))) }
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 */
private def read_tokens(reader: Reader[Char], strict: Boolean): (List[Token], List[Token]) =
{
val token = Token.Parsers.token(bootstrap_keywords)
def make_tokens(in: Reader[Char]): Stream[Token] =
token(in) match {
case Token.Parsers.Success(tok, rest) => tok #:: make_tokens(rest)
case _ => Stream.empty
}
val all_tokens = make_tokens(reader)
val drop_tokens =
if (strict) Nil
else all_tokens.takeWhile(tok => !tok.is_command(Thy_Header.THEORY)).toList
val tokens = all_tokens.drop(drop_tokens.length)
val tokens1 = tokens.takeWhile(tok => !tok.is_begin).toList
val tokens2 = tokens.dropWhile(tok => !tok.is_begin).headOption.toList
(drop_tokens, tokens1 ::: tokens2)
}
def read(reader: Reader[Char], start: Token.Pos, strict: Boolean = true): Thy_Header =
{
val (_, tokens0) = read_tokens(reader, true)
val text =
if (reader.isInstanceOf[Scan.Byte_Reader])
UTF8.decode_permissive(Token.implode(tokens0))
else Token.implode(tokens0)
val (drop_tokens, tokens) = read_tokens(Scan.char_reader(text), strict)
val pos = (start /: drop_tokens)(_.advance(_))
parse(commit(header), Token.reader(tokens, pos)) match {
case Success(result, _) => result
case bad => error(bad.toString)
}
}
}
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, Keyword.Spec(b, c, d)) =>
(f(a), Keyword.Spec(f(b), c.map(f), d.map(f))) }),
abbrevs.map({ case (a, b) => (f(a), f(b)) }))
}
}
