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/* NSC -- new Scala compiler -- Copyright 2007-2011 LAMP/EPFL */
package scala.tools.nsc
package doc
import reporters.Reporter
import java.lang.ClassNotFoundException
import util.{Position, NoPosition}
/** A documentation processor controls the process of generating Scala documentation, which is as follows.
*
* * A simplified compiler instance (with only the front-end phases enabled) is created, and additional
* ''sourceless'' comments are registered.
* * Documentable files are compiled, thereby filling the compiler's symbol table.
* * A documentation model is extracted from the post-compilation symbol table.
* * A generator is used to transform the model into the correct final format (HTML).
*
* A processor contains a single compiler instantiated from the processor's `settings`. Each call to `document`
* uses the same compiler instance with the same symbol table. In particular, this implies that the scaladoc site
* obtained from a call to `run` will contain documentation about files compiled during previous calls to the same
* processor's `run` method.
*
* @param reporter The reporter to which both documentation and compilation errors will be reported.
* @param settings The settings to be used by the documenter and compiler for generating documentation.
*
* @author Gilles Dubochet */
class DocFactory(val reporter: Reporter, val settings: doc.Settings) { processor =>
/** The unique compiler instance used by this processor and constructed from its `settings`. */
object compiler extends Global(settings, reporter) with interactive.RangePositions {
override protected def computeInternalPhases() {
phasesSet += syntaxAnalyzer
phasesSet += analyzer.namerFactory
phasesSet += analyzer.packageObjects
phasesSet += analyzer.typerFactory
phasesSet += superAccessors
phasesSet += pickler
phasesSet += refchecks
}
override def forScaladoc = true
lazy val addSourceless = {
val sless = new SourcelessComments { val global = compiler }
docComments ++= sless.comments
}
}
/** Creates a scaladoc site for all symbols defined in this call's `files`, as well as those defined in `files` of
* previous calls to the same processor.
* @param files The list of paths (relative to the compiler's source path, or absolute) of files to document. */
def makeUniverse(files: List[String]): Option[Universe] = {
(new compiler.Run()) compile files
compiler.addSourceless
assert(settings.docformat.value == "html")
if (!reporter.hasErrors) {
val modelFactory = (new model.ModelFactory(compiler, settings) with model.comment.CommentFactory with model.TreeFactory)
modelFactory.makeModel match {
case Some(madeModel) =>
println("model contains " + modelFactory.templatesCount + " documentable templates")
Some(madeModel)
case None =>
println("no documentable class found in compilation units")
None
}
}
else None
}
/** Generate document(s) for all `files` containing scaladoc documenataion.
* @param files The list of paths (relative to the compiler's source path, or absolute) of files to document. */
def document(files: List[String]): Unit = {
class NoCompilerRunException extends Exception
try {
val docletClass = Class.forName(settings.docgenerator.value) // default is html.Doclet
val docletInstance = docletClass.newInstance().asInstanceOf[doclet.Generator]
if (docletInstance.isInstanceOf[doclet.Universer]) {
makeUniverse(files) match {
case Some(universe) =>
docletClass.getMethod("setUniverse", classOf[Universe]).invoke(docletInstance, universe)
if (docletInstance.isInstanceOf[doclet.Indexer]) {
val index = model.IndexModelFactory.makeIndex(universe)
docletClass.getMethod("setIndex", classOf[Index]).invoke(docletInstance, index)
}
case None =>
throw new NoCompilerRunException()
}
}
docletInstance.generate
}
catch {
case e: ClassNotFoundException =>
case e: NoCompilerRunException =>
reporter.info(NoPosition, "No documentation generated with unsucessful compiler run", false)
}
}
}
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