1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
|
/* 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}
import interpreter.ByteCode.scalaSigBytesForPath
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 | IMPLICITMETHODtpe =>
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 fromBytes(what: String, data: => Array[Byte]): Boolean = {
try {
val pickle = new PickleBuffer(data, 0, data.length)
Console.println(what + ": ")
printFile(pickle, Console.out)
true
}
catch {
case _: Exception => false
}
}
def fromFile(path: String) = fromBytes(path, io.File(path).toByteArray)
def fromName(name: String) = fromBytes(name, scalaSigBytesForPath(name) getOrElse Array())
def main(args: Array[String]) {
args foreach { arg =>
val res = fromFile(arg) || fromName(arg)
if (!res)
Console.println("Cannot read " + arg)
}
}
}
|