diff options
Diffstat (limited to 'src/repl/scala/tools/nsc/interpreter/JavapClass.scala')
| -rw-r--r-- | src/repl/scala/tools/nsc/interpreter/JavapClass.scala | 382 |
1 files changed, 239 insertions, 143 deletions
diff --git a/src/repl/scala/tools/nsc/interpreter/JavapClass.scala b/src/repl/scala/tools/nsc/interpreter/JavapClass.scala index 3cb6ba11c1..ebca3e7e62 100644 --- a/src/repl/scala/tools/nsc/interpreter/JavapClass.scala +++ b/src/repl/scala/tools/nsc/interpreter/JavapClass.scala @@ -9,7 +9,7 @@ package interpreter import java.lang.{ ClassLoader => JavaClassLoader, Iterable => JIterable } import scala.tools.nsc.util.ScalaClassLoader -import java.io.{ ByteArrayInputStream, CharArrayWriter, FileNotFoundException, PrintWriter, Writer } +import java.io.{ ByteArrayInputStream, CharArrayWriter, FileNotFoundException, PrintWriter, StringWriter, Writer } import java.util.{ Locale } import java.util.concurrent.ConcurrentLinkedQueue import javax.tools.{ Diagnostic, DiagnosticCollector, DiagnosticListener, @@ -18,39 +18,47 @@ import javax.tools.{ Diagnostic, DiagnosticCollector, DiagnosticListener, import scala.reflect.io.{ AbstractFile, Directory, File, Path } import scala.io.Source import scala.util.{ Try, Success, Failure } -import scala.util.Properties.lineSeparator +import scala.util.Properties.{ lineSeparator => EOL } import scala.util.matching.Regex -import scala.collection.JavaConverters +import scala.collection.JavaConverters._ import scala.collection.generic.Clearable import java.net.URL import scala.language.reflectiveCalls +import PartialFunction.{ cond => when } import Javap._ +/** Javap command implementation. Supports platform tool for Java 6 or 7+. + * Adds a few options for REPL world, to show bodies of `App` classes and closures. + */ class JavapClass( val loader: ScalaClassLoader, val printWriter: PrintWriter, intp: Option[IMain] = None -) extends scala.tools.util.Javap { +) extends Javap { import JavapTool.ToolArgs import JavapClass._ lazy val tool = JavapTool() - /** Run the tool. Option args start with "-". + /** Run the tool. Option args start with "-", except that "-" itself + * denotes the last REPL result. * The default options are "-protected -verbose". * Byte data for filename args is retrieved with findBytes. + * @return results for invoking JpResult.show() */ def apply(args: Seq[String]): List[JpResult] = { val (options, classes) = args partition (s => (s startsWith "-") && s.length > 1) - val (flags, upgraded) = upgrade(options) + val (flags, upgraded) = upgrade(options) import flags.{ app, fun, help, raw } + val targets = if (fun && !help) FunFinder(loader, intp).funs(classes) else classes + if (help || classes.isEmpty) List(JpResult(JavapTool.helper(printWriter))) else if (targets.isEmpty) - List(JpResult("No anonfuns found.")) + List(JpResult("No closures found.")) else - tool(raw, upgraded)(targets map (klass => targeted(klass, app))) + tool(raw, upgraded)(targets map (targeted(_, app))) // JavapTool.apply } /** Cull our tool options. */ @@ -79,8 +87,10 @@ class JavapClass( case s => s } val targetedBytes = if (app) findAppBody(req) else (path, findBytes(req)) - if (targetedBytes._2.isEmpty) throw new FileNotFoundException(s"Could not find class bytes for '$path'") - targetedBytes + targetedBytes match { + case (_, bytes) if bytes.isEmpty => throw new FileNotFoundException(s"Could not find class bytes for '$path'") + case ok => ok + } } private def findAppBody(path: String): (String, Array[Byte]) = { @@ -89,16 +99,12 @@ class JavapClass( // assumes only the first match is of interest (because only one endpoint is generated). def findNewStyle(bytes: Array[Byte]) = { import scala.tools.asm.ClassReader - import scala.tools.asm.tree.ClassNode - import PartialFunction.cond - import JavaConverters._ - val rdr = new ClassReader(bytes) - val nod = new ClassNode - rdr.accept(nod, 0) //foo/Bar.delayedEndpoint$foo$Bar$1 val endpoint = "delayedEndpoint".r.unanchored - def isEndPoint(s: String) = (s contains '$') && cond(s) { case endpoint() => true } - nod.methods.asScala collectFirst { case m if isEndPoint(m.name) => m.name } + def isEndPoint(s: String) = (s contains '$') && when(s) { case endpoint() => true } + new ClassReader(bytes) withMethods { methods => + methods collectFirst { case m if isEndPoint(m.name) => m.name } + } } // try new style, and add foo#delayedEndpoint$bar$1 to filter on the endpoint def asNewStyle(bytes: Array[Byte]) = Some(bytes) filter (_.nonEmpty) flatMap { bs => @@ -122,8 +128,7 @@ class JavapClass( def findBytes(path: String): Array[Byte] = tryFile(path) getOrElse tryClass(path) - /** Assume the string is a path and try to find the classfile - * it represents. + /** Assume the string is a path and try to find the classfile it represents. */ def tryFile(path: String): Option[Array[Byte]] = (Try (File(path.asClassResource)) filter (_.exists) map (_.toByteArray())).toOption @@ -202,55 +207,67 @@ class JavapClass( w } + def filterLines(target: String, text: String): String = { + // take Foo# as Foo#apply for purposes of filtering. Useful for -fun Foo#; + // if apply is added here, it's for other than -fun: javap Foo#, perhaps m#? + val filterOn = target.splitHashMember._2 map { s => if (s.isEmpty) "apply" else s } + var filtering = false // true if in region matching filter + // turn filtering on/off given the pattern of interest + def filterStatus(line: String, pattern: String) = { + def isSpecialized(method: String) = (method startsWith pattern+"$") && (method endsWith "$sp") + def isAnonymized(method: String) = (pattern == "$anonfun") && (method startsWith "$anonfun$") + // cheap heuristic, todo maybe parse for the java sig. + // method sigs end in paren semi + def isAnyMethod = line endsWith ");" + // take the method name between the space char and left paren. + // accept exact match or something that looks like what we might be asking for. + def isOurMethod = { + val lparen = line lastIndexOf '(' + val blank = line.lastIndexOf(' ', lparen) + if (blank < 0) false + else { + val method = line.substring(blank+1, lparen) + (method == pattern || isSpecialized(method) || isAnonymized(method)) + } + } + filtering = + if (filtering) { + // next blank line terminates section + // in non-verbose mode, next line is next method, more or less + line.trim.nonEmpty && (!isAnyMethod || isOurMethod) + } else { + isAnyMethod && isOurMethod + } + filtering + } + // do we output this line? + def checkFilter(line: String) = filterOn map (filterStatus(line, _)) getOrElse true + val sw = new StringWriter + val pw = new PrintWriter(sw) + for { + line <- Source.fromString(text).getLines() + if checkFilter(line) + } pw println line + pw.flush() + sw.toString + } + /** Create a Showable with output massage. * @param raw show ugly repl names * @param target attempt to filter output to show region of interest * @param preamble other messages to output */ - def showWithPreamble(raw: Boolean, target: String, preamble: String = ""): Showable = new Showable { - // ReplStrippingWriter clips and scrubs on write(String) - // circumvent it by write(mw, 0, mw.length) or wrap it in withoutUnwrapping - def show() = - if (raw && intp.isDefined) intp.get withoutUnwrapping { writeLines() } - else writeLines() - private def writeLines() { - // take Foo# as Foo#apply for purposes of filtering. Useful for -fun Foo#; - // if apply is added here, it's for other than -fun: javap Foo#, perhaps m#? - val filterOn = target.splitHashMember._2 map { s => if (s.isEmpty) "apply" else s } - var filtering = false // true if in region matching filter - // turn filtering on/off given the pattern of interest - def filterStatus(line: String, pattern: String) = { - // cheap heuristic, todo maybe parse for the java sig. - // method sigs end in paren semi - def isAnyMethod = line.endsWith(");") - def isOurMethod = { - val lparen = line.lastIndexOf('(') - val blank = line.lastIndexOf(' ', lparen) - if (blank < 0) false - else { - val method = line.substring(blank+1, lparen) - (method == pattern || ((method startsWith pattern+"$") && (method endsWith "$sp"))) - } - } - filtering = - if (filtering) { - // next blank line terminates section - // for -public, next line is next method, more or less - line.trim.nonEmpty && !isAnyMethod - } else { - isAnyMethod && isOurMethod - } - filtering - } - // do we output this line? - def checkFilter(line: String) = filterOn map (filterStatus(line, _)) getOrElse true - for { - line <- Source.fromString(preamble + written).getLines() - if checkFilter(line) - } printWriter write f"$line%n" - printWriter.flush() + def showWithPreamble(raw: Boolean, target: String, preamble: String = ""): Showable = + new Showable { + private def writeLines() = filterLines(target, preamble + written) + val output = writeLines() + + // ReplStrippingWriter clips and scrubs on write(String) + // circumvent it by write(mw, 0, mw.length) or wrap it in withoutUnwrapping + def show() = + if (raw && intp.isDefined) intp.get withoutUnwrapping { printWriter.write(output, 0, output.length) } + else intp.get withoutTruncating(printWriter write output) } - } } class JavapTool6 extends JavapTool { @@ -291,6 +308,7 @@ class JavapClass( } class JavapTool7 extends JavapTool { + import JavapTool._ type Task = { def call(): Boolean // true = ok //def run(args: Array[String]): Int // all args @@ -322,19 +340,14 @@ class JavapClass( /** All diagnostic messages. * @param locale Locale for diagnostic messages, null by default. */ - def messages(implicit locale: Locale = null) = { - import JavaConverters._ - diagnostics.asScala.map(_ getMessage locale).toList - } + def messages(implicit locale: Locale = null) = diagnostics.asScala.map(_ getMessage locale).toList + // don't filter this message if raw, since the names are likely to differ + private val container = "Binary file .* contains .*".r def reportable(raw: Boolean): String = { - // don't filter this message if raw, since the names are likely to differ - val container = "Binary file .* contains .*".r - val m = if (raw) messages - else messages filter (_ match { case container() => false case _ => true }) + val m = if (raw) messages else messages filterNot (when(_) { case container() => true }) clear() - if (m.nonEmpty) m mkString ("", lineSeparator, lineSeparator) - else "" + if (m.nonEmpty) m mkString ("", EOL, EOL) else "" } } val reporter = new JavaReporter @@ -396,7 +409,6 @@ class JavapClass( def task(options: Seq[String], classes: Seq[String], inputs: Seq[Input]): Task = { //ServiceLoader.load(classOf[javax.tools.DisassemblerTool]). //getTask(writer, fileManager, reporter, options.asJava, classes.asJava) - import JavaConverters.asJavaIterableConverter TaskCtor.newInstance(writer, fileManager(inputs), reporter, options.asJava, classes.asJava) .orFailed (throw new IllegalStateException) } @@ -476,7 +488,7 @@ class JavapClass( object ToolArgs { def fromArgs(args: Seq[String]): (ToolArgs, Seq[String]) = ((ToolArgs(), Seq[String]()) /: (args flatMap massage)) { case ((t,others), s) => s match { - case "-fun" => (t copy (fun=true), others) + case "-fun" => (t copy (fun=true), others :+ "-private") case "-app" => (t copy (app=true), others) case "-help" => (t copy (help=true), others) case "-raw" => (t copy (raw=true), others) @@ -542,24 +554,26 @@ class JavapClass( val DefaultOptions = List("-protected", "-verbose") - def isAvailable = Seq(Env, Tool) exists (cn => hasClass(loader, cn)) - private def hasClass(cl: ScalaClassLoader, cn: String) = cl.tryToInitializeClass[AnyRef](cn).isDefined - private def isTaskable(cl: ScalaClassLoader) = hasClass(cl, Tool) + def isAvailable = Seq(Env, Tool) exists (hasClass(loader, _)) /** Select the tool implementation for this platform. */ - def apply() = if (isTaskable(loader)) new JavapTool7 else new JavapTool6 + def apply() = if (hasClass(loader, Tool)) new JavapTool7 else new JavapTool6 } } object JavapClass { + import scala.tools.asm.ClassReader + import scala.tools.asm.tree.{ ClassNode, MethodNode } + def apply( loader: ScalaClassLoader = ScalaClassLoader.appLoader, printWriter: PrintWriter = new PrintWriter(System.out, true), intp: Option[IMain] = None ) = new JavapClass(loader, printWriter, intp) + /** Match foo#bar, both groups are optional (may be null). */ val HashSplit = "([^#]+)?(?:#(.+)?)?".r // We enjoy flexibility in specifying either a fully-qualified class name com.acme.Widget @@ -580,9 +594,9 @@ object JavapClass { else (s take i, Some(s drop i+1)) } } - implicit class ClassLoaderOps(val cl: ClassLoader) extends AnyVal { + implicit class ClassLoaderOps(val loader: ScalaClassLoader) extends AnyVal { private def parentsOf(x: ClassLoader): List[ClassLoader] = if (x == null) Nil else x :: parentsOf(x.getParent) - def parents: List[ClassLoader] = parentsOf(cl) + def parents: List[ClassLoader] = parentsOf(loader) /* all file locations */ def locations = { def alldirs = parents flatMap (_ match { @@ -596,7 +610,7 @@ object JavapClass { /* only the file location from which the given class is loaded */ def locate(k: String): Option[Path] = { Try { - val klass = try cl loadClass k catch { + val klass = try loader loadClass k catch { case _: NoClassDefFoundError => null // let it snow } // cf ScalaClassLoader.originOfClass @@ -608,44 +622,66 @@ object JavapClass { } } /* would classBytes succeed with a nonempty array */ - def resourceable(className: String): Boolean = cl.getResource(className.asClassResource) != null + def resourceable(className: String): Boolean = loader.getResource(className.asClassResource) != null + + /* class reader of class bytes */ + def classReader(resource: String): ClassReader = new ClassReader(loader classBytes resource) + } + implicit class `class reader convenience`(val reader: ClassReader) extends AnyVal { + def withMethods[A](f: Seq[MethodNode] => A): A = { + val cls = new ClassNode + reader.accept(cls, 0) + f(cls.methods.asScala) + } } implicit class PathOps(val p: Path) extends AnyVal { import scala.tools.nsc.io.Jar def isJar = Jar isJarOrZip p } + implicit class `fun with files`(val f: AbstractFile) extends AnyVal { + def descend(path: Seq[String]): Option[AbstractFile] = { + def lookup(f: AbstractFile, path: Seq[String]): Option[AbstractFile] = path match { + case p if p.isEmpty => Option(f) + case p => Option(f.lookupName(p.head, directory = true)) flatMap (lookup(_, p.tail)) + } + lookup(f, path) + } + } implicit class URLOps(val url: URL) extends AnyVal { def isFile: Boolean = url.getProtocol == "file" } object FunFinder { def apply(loader: ScalaClassLoader, intp: Option[IMain]) = new FunFinder(loader, intp) } + // FunFinder.funs(ks) finds anonfuns class FunFinder(loader: ScalaClassLoader, intp: Option[IMain]) { + // manglese for closure: typename, $anonfun or lamba, opt method, digits + val closure = """(.*)\$(\$anonfun|lambda)(?:\$+([^$]+))?\$(\d+)""".r + + // manglese for closure + val cleese = "(?:anonfun|lambda)" + // class k, candidate f without prefix - def isFunOfClass(k: String, f: String) = { - val p = (s"${Regex quote k}\\$$+anonfun").r - (p findPrefixOf f).nonEmpty - } + def isFunOfClass(k: String, f: String) = (s"${Regex quote k}\\$$+$cleese".r findPrefixOf f).nonEmpty + // class k, candidate f without prefix, method m - def isFunOfMethod(k: String, m: String, f: String) = { - val p = (s"${Regex quote k}\\$$+anonfun\\$$${Regex quote m}\\$$").r - (p findPrefixOf f).nonEmpty - } - def isFunOfTarget(k: String, m: Option[String], f: String) = - if (m.isEmpty) isFunOfClass(k, f) - else isFunOfMethod(k, m.get, f) - def listFunsInAbsFile(k: String, m: Option[String], d: AbstractFile) = { - for (f <- d; if !f.isDirectory && isFunOfTarget(k, m, f.name)) yield f.name - } - // path prefix p, class k, dir d - def listFunsInDir(p: String, k: String, m: Option[String])(d: Directory) = { - val subdir = Path(p) - for (f <- (d / subdir).toDirectory.list; if f.isFile && isFunOfTarget(k, m, f.name)) + def isFunOfMethod(k: String, m: String, f: String) = + (s"${Regex quote k}\\$$+$cleese\\$$+${Regex quote m}\\$$".r findPrefixOf f).nonEmpty + + def isFunOfTarget(target: Target, f: String) = + target.member map (isFunOfMethod(target.name, _, f)) getOrElse isFunOfClass(target.name, f) + + def listFunsInAbsFile(target: Target)(d: AbstractFile) = + for (f <- d; if !f.isDirectory && isFunOfTarget(target, f.name)) yield f.name + + def listFunsInDir(target: Target)(d: Directory) = { + val subdir = Path(target.prefix) + for (f <- (d / subdir).toDirectory.list; if f.isFile && isFunOfTarget(target, f.name)) yield f.name } - // path prefix p, class k, jar file f - def listFunsInJar(p: String, k: String, m: Option[String])(f: File) = { + + def listFunsInJar(target: Target)(f: File) = { import java.util.jar.JarEntry import scala.tools.nsc.io.Jar def maybe(e: JarEntry) = { @@ -654,78 +690,133 @@ object JavapClass { if (parts.length < 2) ("", e.getName) else (parts.init mkString "/", parts.last) } - if (path == p && isFunOfTarget(k, m, name)) Some(name) else None + if (path == target.prefix && isFunOfTarget(target, name)) Some(name) else None } (new Jar(f) map maybe).flatten } def loadable(name: String) = loader resourceable name - // translated class, optional member, opt member to filter on, whether it is repl output - def translate(s: String): (String, Option[String], Option[String], Boolean) = { + case class Target(path: String, member: Option[String], filter: Option[String], isRepl: Boolean, isModule: Boolean) { + val splat = path split "\\." + val name = splat.last + val prefix = if (splat.length > 1) splat.init mkString "/" else "" + val pkg = if (splat.length > 1) splat.init mkString "." else "" + val targetName = s"$name${ if (isModule) "$" else "" }" + } + // translated class, optional member, opt member to filter on, whether it is repl output and a module + def translate(s: String): Target = { val (k0, m0) = s.splitHashMember - val k = k0.asClassName + val isModule = k0 endsWith "$" + val k = (k0 stripSuffix "$").asClassName val member = m0 filter (_.nonEmpty) // take Foo# as no member, not "" val filter = m0 flatMap { case "" => Some("apply") case _ => None } // take Foo# as filter on apply // class is either something replish or available to loader // $line.$read$$etc$Foo#member - ((intp flatMap (_ translatePath k) filter (loadable) map ((_, member, filter, true))) + ((intp flatMap (_ translatePath k) filter (loadable) map (x => Target(x stripSuffix "$", member, filter, true, isModule))) // s = "f" and $line.$read$$etc$#f is what we're after, // ignoring any #member (except take # as filter on #apply) - orElse (intp flatMap (_ translateEnclosingClass k) map ((_, Some(k), filter, true))) - getOrElse ((k, member, filter, false))) + orElse (intp flatMap (_ translateEnclosingClass k) map (x => Target(x stripSuffix "$", Some(k), filter, true, isModule))) + getOrElse (Target(k, member, filter, false, isModule))) } /** Find the classnames of anonfuns associated with k, * where k may be an available class or a symbol in scope. */ - def funsOf(k0: String): Seq[String] = { + def funsOf(selection: String): Seq[String] = { // class is either something replish or available to loader - val (k, member, filter, isReplish) = translate(k0) - val splat = k split "\\." - val name = splat.last - val prefix = if (splat.length > 1) splat.init mkString "/" else "" - val pkg = if (splat.length > 1) splat.init mkString "." else "" + val target = translate(selection) + // reconstitute an anonfun with a package // if filtered, add the hash back, e.g. pkg.Foo#bar, pkg.Foo$anon$1#apply def packaged(s: String) = { - val p = if (pkg.isEmpty) s else s"$pkg.$s" - val pm = filter map (p + "#" + _) - pm getOrElse p + val p = if (target.pkg.isEmpty) s else s"${target.pkg}.$s" + target.filter map (p + "#" + _) getOrElse p } - // is this translated path in (usually virtual) repl outdir? or loadable from filesystem? - val fs = if (isReplish) { - def outed(d: AbstractFile, p: Seq[String]): Option[AbstractFile] = { - if (p.isEmpty) Option(d) - else Option(d.lookupName(p.head, directory = true)) flatMap (f => outed(f, p.tail)) - } - outed(intp.get.replOutput.dir, splat.init) map { d => - listFunsInAbsFile(name, member, d) map packaged - } - } else { - loader locate k map { w => - if (w.isDirectory) listFunsInDir(prefix, name, member)(w.toDirectory) map packaged - else if (w.isJar) listFunsInJar(prefix, name, member)(w.toFile) map packaged - else Nil + // find closure classes in repl outdir or try asking the classloader where to look + val fs = + if (target.isRepl) + (intp.get.replOutput.dir descend target.splat.init) map { d => + listFunsInAbsFile(target)(d) map (_.asClassName) map packaged + } + else + loader locate target.path map { + case d if d.isDirectory => listFunsInDir(target)(d.toDirectory) map packaged + case j if j.isJar => listFunsInJar(target)(j.toFile) map packaged + case _ => Nil + } + val res = fs map (_.to[Seq]) getOrElse Seq() + // on second thought, we don't care about lamba method classes, just the impl methods + val rev = + res flatMap { + case x @ closure(_, "lambda", _, _) => labdaMethod(x, target) + //target.member flatMap (_ => labdaMethod(x, target)) getOrElse s"${target.name}#$$anonfun" + case x => Some(x) + } + rev + } + // given C$lambda$$g$n for member g and n in 1..N, find the C.accessor$x + // and the C.$anonfun$x it forwards to. + def labdaMethod(lambda: String, target: Target): Option[String] = { + import scala.tools.asm.ClassReader + import scala.tools.asm.Opcodes.INVOKESTATIC + import scala.tools.asm.tree.{ ClassNode, MethodInsnNode } + // the accessor methods invoked statically by the apply of the given closure class + def accesses(s: String): Seq[(String, String)] = { + val accessor = """accessor\$\d+""".r + loader classReader s withMethods { ms => + ms filter (_.name == "apply") flatMap (_.instructions.toArray.collect { + case i: MethodInsnNode if i.getOpcode == INVOKESTATIC && when(i.name) { case accessor(_*) => true } => (i.owner, i.name) + }) } } - fs match { - case Some(xs) => xs.to[Seq] // maybe empty - case None => Seq() // nothing found, e.g., junk input + // get the k.$anonfun for the accessor k.m + def anonOf(k: String, m: String): String = { + val res = + loader classReader k withMethods { ms => + ms filter (_.name == m) flatMap (_.instructions.toArray.collect { + case i: MethodInsnNode if i.getOpcode == INVOKESTATIC && i.name.startsWith("$anonfun") => i.name + }) + } + assert(res.size == 1) + res.head + } + // the lambdas invoke accessors that call the anonfuns of interest. Filter k on the k#$anonfuns. + val ack = accesses(lambda) + assert(ack.size == 1) // There can be only one. + ack.head match { + case (k, _) if target.isModule && !(k endsWith "$") => None + case (k, m) => Some(s"${k}#${anonOf(k, m)}") } } - def funs(ks: Seq[String]) = ks flatMap funsOf _ + /** Translate the supplied targets to patterns for anonfuns. + * Pattern is typename $ label [[$]$func] $n where label is $anonfun or lamba, + * and lambda includes the extra dollar, func is a method name, and n is an int. + * The typename for a nested class is dollar notation, Betty$Bippy. + * + * If C has anonfun closure classes, then use C$$anonfun$f$1 (various names, C# filters on apply). + * If C has lambda closure classes, then use C#$anonfun (special-cased by output filter). + */ + def funs(ks: Seq[String]): Seq[String] = ks flatMap funsOf } } +trait Javap { + def loader: ScalaClassLoader + def printWriter: PrintWriter + def apply(args: Seq[String]): List[Javap.JpResult] + def tryFile(path: String): Option[Array[Byte]] + def tryClass(path: String): Array[Byte] +} + object Javap { def isAvailable(cl: ScalaClassLoader = ScalaClassLoader.appLoader) = JavapClass(cl).JavapTool.isAvailable def apply(path: String): Unit = apply(Seq(path)) def apply(args: Seq[String]): Unit = JavapClass() apply args foreach (_.show()) - trait Showable { + private[interpreter] trait Showable { def show(): Unit } - sealed trait JpResult extends scala.tools.util.JpResult { + sealed trait JpResult { type ResultType def isError: Boolean def value: ResultType @@ -751,8 +842,13 @@ object Javap { def isError = false def show() = value.show() // output to tool's PrintWriter } - implicit class Lastly[A](val t: Try[A]) extends AnyVal { - private def effect[X](last: =>Unit)(a: X): Try[A] = { last; t } - def lastly(last: =>Unit): Try[A] = t transform (effect(last) _, effect(last) _) - } +} + +object NoJavap extends Javap { + import Javap._ + def loader: ScalaClassLoader = getClass.getClassLoader + def printWriter: PrintWriter = new PrintWriter(System.err, true) + def apply(args: Seq[String]): List[JpResult] = Nil + def tryFile(path: String): Option[Array[Byte]] = None + def tryClass(path: String): Array[Byte] = Array() } |