author | wenzelm |
Sat, 13 Aug 2011 20:20:36 +0200 | |
changeset 44185 | 05641edb5d30 |
parent 44163 | 32e0c150c010 |
child 44222 | 9d5ef6cd4ee1 |
permissions | -rw-r--r-- |
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/* Title: Pure/Thy/thy_header.scala |
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Author: Makarius |
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Theory headers -- independent of outer syntax. |
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*/ |
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package isabelle |
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import scala.annotation.tailrec |
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import scala.collection.mutable |
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import scala.util.parsing.input.{Reader, CharSequenceReader} |
38149
3c380380beac
somewhat uniform Thy_Header.split_thy_path in ML and Scala;
wenzelm
parents:
36956
diff
changeset
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import scala.util.matching.Regex |
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scan: operate on file (via Scan.byte_reader), more robust exception handling;
wenzelm
parents:
34169
diff
changeset
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import java.io.File |
fbfc18be1f8c
scan: operate on file (via Scan.byte_reader), more robust exception handling;
wenzelm
parents:
34169
diff
changeset
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quasi-static Isabelle_System -- reduced tendency towards "functorial style";
wenzelm
parents:
43652
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changeset
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object Thy_Header extends Parse.Parser |
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{ |
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val HEADER = "header" |
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val THEORY = "theory" |
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val IMPORTS = "imports" |
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val USES = "uses" |
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val BEGIN = "begin" |
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val lexicon = Scan.Lexicon("%", "(", ")", ";", BEGIN, HEADER, IMPORTS, THEORY, USES) |
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38149
3c380380beac
somewhat uniform Thy_Header.split_thy_path in ML and Scala;
wenzelm
parents:
36956
diff
changeset
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44160
8848867501fb
clarified document model header: master_dir (native wrt. editor, potentially URL) and node_name (full canonical path);
wenzelm
parents:
44159
diff
changeset
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/* theory file name */ |
8848867501fb
clarified document model header: master_dir (native wrt. editor, potentially URL) and node_name (full canonical path);
wenzelm
parents:
44159
diff
changeset
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private val Thy_Name = new Regex("""(.*?)([^/\\:]+)\.thy""") |
44160
8848867501fb
clarified document model header: master_dir (native wrt. editor, potentially URL) and node_name (full canonical path);
wenzelm
parents:
44159
diff
changeset
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def thy_name(s: String): Option[(String, String)] = |
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s match { case Thy_Name(prefix, name) => Some((prefix, name)) case _ => None } |
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38149
3c380380beac
somewhat uniform Thy_Header.split_thy_path in ML and Scala;
wenzelm
parents:
36956
diff
changeset
|
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def thy_path(name: String): Path = Path.basic(name).ext("thy") |
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/* header */ |
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val header: Parser[Thy_Header] = |
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{ |
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val file_name = atom("file name", _.is_name) |
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val theory_name = atom("theory name", _.is_name) |
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val file = |
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keyword("(") ~! (file_name ~ keyword(")")) ^^ { case _ ~ (x ~ _) => (x, false) } | |
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file_name ^^ (x => (x, true)) |
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val uses = opt(keyword(USES) ~! (rep1(file))) ^^ { case None => Nil case Some(_ ~ xs) => xs } |
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val args = |
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theory_name ~ (keyword(IMPORTS) ~! (rep1(theory_name) ~ uses ~ keyword(BEGIN))) ^^ |
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{ case x ~ (_ ~ (ys ~ zs ~ _)) => Thy_Header(x, ys, zs) } |
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(keyword(HEADER) ~ tags) ~! |
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((doc_source ~ rep(keyword(";")) ~ keyword(THEORY) ~ tags) ~> args) ^^ { case _ ~ x => x } | |
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(keyword(THEORY) ~ tags) ~! args ^^ { case _ ~ x => x } |
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} |
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/* read -- lazy scanning */ |
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def read(reader: Reader[Char]): Thy_Header = |
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{ |
43695
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simplified Symbol based on lazy Symbol.Interpretation -- reduced odd "functorial style";
wenzelm
parents:
43672
diff
changeset
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val token = lexicon.token(_ => false) |
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renamed class Outer_Lex to Token and Token_Kind to Token.Kind;
wenzelm
parents:
36948
diff
changeset
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val toks = new mutable.ListBuffer[Token] |
34188
fbfc18be1f8c
scan: operate on file (via Scan.byte_reader), more robust exception handling;
wenzelm
parents:
34169
diff
changeset
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@tailrec def scan_to_begin(in: Reader[Char]) |
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{ |
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token(in) match { |
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case lexicon.Success(tok, rest) => |
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toks += tok |
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if (!tok.is_begin) scan_to_begin(rest) |
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case _ => |
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} |
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} |
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scan_to_begin(reader) |
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21be4832c362
renamed class Outer_Lex to Token and Token_Kind to Token.Kind;
wenzelm
parents:
36948
diff
changeset
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parse(commit(header), Token.reader(toks.toList)) match { |
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case Success(result, _) => result |
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case bad => error(bad.toString) |
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} |
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} |
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def read(source: CharSequence): Thy_Header = |
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read(new CharSequenceReader(source)) |
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def read(file: File): Thy_Header = |
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{ |
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val reader = Scan.byte_reader(file) |
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try { read(reader).map(Standard_System.decode_permissive_utf8) } |
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finally { reader.close } |
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} |
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/* check */ |
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def check(name: String, source: CharSequence): Thy_Header = |
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{ |
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val header = read(source) |
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val name1 = header.name |
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if (name != name1) error("Bad file name " + thy_path(name) + " for theory " + quote(name1)) |
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Path.explode(name) |
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header |
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} |
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} |
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sealed case class Thy_Header( |
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val name: String, val imports: List[String], val uses: List[(String, Boolean)]) |
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{ |
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def map(f: String => String): Thy_Header = |
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Thy_Header(f(name), imports.map(f), uses.map(p => (f(p._1), p._2))) |
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def norm_deps(f: String => String): Thy_Header = |
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copy(imports = imports.map(name => f(name)), uses = uses.map(p => (f(p._1), p._2))) |
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} |
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