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/* NSC -- new Scala compiler
* Copyright 2005-2010 LAMP/EPFL
* @author Martin Odersky
*/
// $Id$
package scala.tools.nsc
package util
import java.io.{File, FileInputStream, PrintStream, IOException}
import java.lang.Long.toHexString
import java.lang.Float.intBitsToFloat
import java.lang.Double.longBitsToDouble
import symtab.{Flags, Names}
import symtab.classfile.{PickleBuffer, PickleFormat}
object ShowPickled extends Names {
import PickleFormat._
def tag2string(tag: Int): String = tag match {
case TERMname => "TERMname"
case TYPEname => "TYPEname"
case NONEsym => "NONEsym"
case TYPEsym => "TYPEsym"
case ALIASsym => "ALIASsym"
case CLASSsym => "CLASSsym"
case MODULEsym => "MODULEsym"
case VALsym => "VALsym"
case EXTref => "EXTref"
case EXTMODCLASSref => "EXTMODCLASSref"
case NOtpe => "NOtpe"
case NOPREFIXtpe => "NOPREFIXtpe"
case THIStpe => "THIStpe"
case SINGLEtpe => "SINGLEtpe"
case CONSTANTtpe => "CONSTANTtpe"
case TYPEREFtpe => "TYPEREFtpe"
case TYPEBOUNDStpe => "TYPEBOUNDStpe"
case REFINEDtpe => "REFINEDtpe"
case CLASSINFOtpe => "CLASSINFOtpe"
case METHODtpe => "METHODtpe"
case POLYtpe => "POLYtpe"
case IMPLICITMETHODtpe => "IMPLICITMETHODtpe"
case SUPERtpe => "SUPERtpe"
case LITERALunit => "LITERALunit"
case LITERALboolean => "LITERALboolean"
case LITERALbyte => "LITERALbyte"
case LITERALshort => "LITERALshort"
case LITERALchar => "LITERALchar"
case LITERALint => "LITERALint"
case LITERALlong => "LITERALlong"
case LITERALfloat => "LITERALfloat"
case LITERALdouble => "LITERALdouble"
case LITERALstring => "LITERALstring"
case LITERALnull => "LITERALnull"
case LITERALclass => "LITERALclass"
case LITERALenum => "LITERALenum"
case SYMANNOT => "SYMANNOT"
case CHILDREN => "CHILDREN"
case ANNOTATEDtpe => "ANNOTATEDtpe"
case ANNOTINFO => "ANNOTINFO"
case ANNOTARGARRAY => "ANNOTARGARRAY"
case DEBRUIJNINDEXtpe => "DEBRUIJNINDEXtpe"
case EXISTENTIALtpe => "EXISTENTIALtpe"
case TREE => "TREE"
case MODIFIERS => "MODIFIERS"
case _ => "***BAD TAG***(" + tag + ")"
}
def printFile(buf: PickleBuffer, out: PrintStream) {
out.println("Version " + buf.readNat() + "." + buf.readNat())
val index = buf.createIndex
def printNameRef() {
val x = buf.readNat()
val savedIndex = buf.readIndex
buf.readIndex = index(x)
val tag = buf.readByte()
val len = buf.readNat()
out.print(" " + x + "(" + newTermName(buf.bytes, buf.readIndex, len) + ")")
buf.readIndex = savedIndex
}
def printNat() = out.print(" " + buf.readNat())
def printSymbolRef() = printNat()
def printTypeRef() = printNat()
def printConstantRef() = printNat()
def printAnnotInfoRef() = printNat()
def printConstAnnotArgRef() = printNat()
def printAnnotArgRef() = printNat()
def printSymInfo() {
printNameRef()
printSymbolRef()
val pflags = buf.readLongNat()
out.print(" " + toHexString(pflags) +
"[" + Flags.flagsToString(Flags.pickledToRawFlags(pflags)) + "] ")
printTypeRef()
}
/** Note: the entries which require some semantic analysis to be correctly
* interpreted are for the most part going to tell you the wrong thing.
* It's not so easy to duplicate the logic applied in the UnPickler.
*/
def printEntry(i: Int) {
buf.readIndex = index(i)
out.print(i + "," + buf.readIndex + ": ")
val tag = buf.readByte()
out.print(tag2string(tag))
val len = buf.readNat()
val end = len + buf.readIndex
out.print(" " + len + ":")
tag match {
case TERMname =>
out.print(" ")
out.print(newTermName(buf.bytes, buf.readIndex, len).toString())
buf.readIndex = end
case TYPEname =>
out.print(" ")
out.print(newTypeName(buf.bytes, buf.readIndex, len))
buf.readIndex = end
case TYPEsym | ALIASsym | CLASSsym | MODULEsym | VALsym =>
printSymInfo()
if (tag == CLASSsym && (buf.readIndex < end)) printTypeRef()
case EXTref | EXTMODCLASSref =>
printNameRef()
if (buf.readIndex < end) { printSymbolRef() }
case THIStpe =>
printSymbolRef()
case SINGLEtpe =>
printTypeRef(); printSymbolRef()
case CONSTANTtpe =>
printTypeRef(); printConstantRef()
case TYPEREFtpe =>
printTypeRef(); printSymbolRef(); buf.until(end, printTypeRef)
case TYPEBOUNDStpe =>
printTypeRef(); printTypeRef()
case REFINEDtpe =>
printSymbolRef(); buf.until(end, printTypeRef)
case CLASSINFOtpe =>
printSymbolRef(); buf.until(end, printTypeRef)
case METHODtpe =>
printTypeRef(); buf.until(end, printTypeRef)
case POLYtpe =>
printTypeRef(); buf.until(end, printSymbolRef)
case LITERALboolean =>
out.print(if (buf.readLong(len) == 0L) " false" else " true")
case LITERALbyte =>
out.print(" " + buf.readLong(len).toByte)
case LITERALshort =>
out.print(" " + buf.readLong(len).toShort)
case LITERALchar =>
out.print(" " + buf.readLong(len).toChar)
case LITERALint =>
out.print(" " + buf.readLong(len).toInt)
case LITERALlong =>
out.print(" " + buf.readLong(len))
case LITERALfloat =>
out.print(" " + intBitsToFloat(buf.readLong(len).toInt))
case LITERALdouble =>
out.print(" " + longBitsToDouble(buf.readLong(len)))
case LITERALstring =>
printNameRef()
case LITERALenum =>
printSymbolRef()
case LITERALnull =>
out.print(" <null>")
case LITERALclass =>
printTypeRef()
case CHILDREN =>
printSymbolRef(); buf.until(end, printSymbolRef)
case SYMANNOT =>
printSymbolRef(); printTypeRef(); buf.until(end, printAnnotArgRef)
case ANNOTATEDtpe =>
printTypeRef(); buf.until(end, printAnnotInfoRef);
case ANNOTINFO =>
printTypeRef(); buf.until(end, printAnnotArgRef)
case ANNOTARGARRAY =>
buf.until(end, printConstAnnotArgRef)
case _ =>
}
out.println()
if (buf.readIndex != end) {
out.println("BAD ENTRY END: computed = %d, actual = %d, bytes = %s".format(
end, buf.readIndex, buf.bytes.slice(index(i), (end max buf.readIndex)).mkString(", ")
))
}
}
for (i <- 0 until index.length) printEntry(i)
}
def main(args: Array[String]) {
val file = new File(args(0))
try {
val stream = new FileInputStream(file)
val data = new Array[Byte](stream.available())
stream.read(data)
val pickle = new PickleBuffer(data, 0, data.length)
printFile(pickle, Console.out)
} catch {
case ex: IOException =>
Console.println("cannot read " + file + ": " + ex.getMessage())
}
}
}
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