"
COPYRIGHT (c) 1997 by eXept Software AG
All Rights Reserved
This software is furnished under a license and may be used
only in accordance with the terms of that license and with the
inclusion of the above copyright notice. This software may not
be provided or otherwise made available to, or used by, any
other person. No title to or ownership of the software is
hereby transferred.
"
CompiledCode variableSubclass:#JavaMethod
instanceVariableNames:'accessFlags selector javaClass signature lineNumberTable
localVariableTable'
classVariableNames:'AbstractMethodInvokationSignal SignatureTypeCodes
ForceByteCodeDisplay UnresolvedClassSignal A_PUBLIC A_PRIVATE
A_PROTECTED A_STATIC A_FINAL A_SYNCHRONIZED A_ABSTRACT A_NATIVE
A_BREAKPOINT R_VOID R_LONG R_DOUBLE A_HASHANDLER'
poolDictionaries:''
category:'Java-Classes'
!
!JavaMethod class methodsFor:'documentation'!
copyright
"
COPYRIGHT (c) 1997 by eXept Software AG
All Rights Reserved
This software is furnished under a license and may be used
only in accordance with the terms of that license and with the
inclusion of the above copyright notice. This software may not
be provided or otherwise made available to, or used by, any
other person. No title to or ownership of the software is
hereby transferred.
"
! !
!JavaMethod class methodsFor:'initialization'!
initialize
AbstractMethodInvokationSignal isNil ifTrue:[
AbstractMethodInvokationSignal := ExecutionErrorSignal newSignalMayProceed:true.
AbstractMethodInvokationSignal nameClass:self message:#abstractMethodInvokationSignal.
AbstractMethodInvokationSignal notifierString:'attempt to execute abstract method'.
UnresolvedClassSignal := ExecutionErrorSignal newSignalMayProceed:true.
UnresolvedClassSignal nameClass:self message:#unresolvedClassSignal.
UnresolvedClassSignal notifierString:'unresolved class'.
].
A_PUBLIC := 16r0001.
A_PRIVATE := 16r0002.
A_PROTECTED := 16r0004.
A_STATIC := 16r0008.
A_FINAL := 16r0010.
A_SYNCHRONIZED := 16r0020.
A_NATIVE := 16r0100.
A_ABSTRACT := 16r0400.
R_VOID := 16r100000.
R_LONG := 16r200000.
R_DOUBLE := 16r300000.
A_BREAKPOINT := 16r0800000.
A_HASHANDLER := 16r1000000.
self flags:(self flags bitOr:Behavior flagJavaMethod).
SignatureTypeCodes := IdentityDictionary new.
SignatureTypeCodes at:$B put:#byte.
SignatureTypeCodes at:$C put:#char.
SignatureTypeCodes at:$D put:#double.
SignatureTypeCodes at:$F put:#float.
SignatureTypeCodes at:$I put:#int.
SignatureTypeCodes at:$J put:#long.
SignatureTypeCodes at:$S put:#'unsigned short'.
SignatureTypeCodes at:$Z put:#boolean.
SignatureTypeCodes at:$L put:#object.
SignatureTypeCodes at:$[ put:#array.
ForceByteCodeDisplay := false.
"
JavaMethod initialize.
JavaMethodWithHandler initialize.
ForceByteCodeDisplay := true.
ForceByteCodeDisplay := false.
"
"Modified: / 16.10.1998 / 01:29:48 / cg"
! !
!JavaMethod class methodsFor:'instance creation'!
fromMethod:aJavaMethod
"create a new javaMethod, copying values from another javaMethod"
^ self new fromMethod:aJavaMethod
"Created: / 16.10.1998 / 01:25:12 / cg"
!
new
"create a new javaMethod.
Redefined, since constants are NOT stored in a literalArray,
but my classes constantTable instead."
^ self basicNew:0.
"Created: / 16.10.1998 / 01:13:02 / cg"
! !
!JavaMethod class methodsFor:'Signal constants'!
abstractMethodInvokationSignal
"return the signal raised when an abstract method is invoked"
^ AbstractMethodInvokationSignal
"Created: / 27.1.1998 / 21:50:05 / cg"
!
unresolvedClassSignal
"return the signal raised when an unresolved class is referenced"
^ UnresolvedClassSignal
"Created: / 27.1.1998 / 21:50:05 / cg"
! !
!JavaMethod class methodsFor:'constants'!
A_HASHANDLER
^ A_HASHANDLER
"Created: / 26.11.1998 / 22:23:12 / cg"
!
A_NATIVE
^ JavaClass A_NATIVE
"Created: / 16.5.1998 / 01:18:24 / cg"
!
A_PUBLIC
^ JavaClass A_PUBLIC
"Created: / 16.5.1998 / 00:01:10 / cg"
!
A_STATIC
^ JavaClass A_STATIC
"Created: / 16.5.1998 / 00:01:17 / cg"
! !
!JavaMethod class methodsFor:'misc'!
forceByteCodeDisplay
^ ForceByteCodeDisplay
"Created: 7.4.1997 / 20:11:39 / cg"
!
forceByteCodeDisplay:aBoolean
ForceByteCodeDisplay := aBoolean
"
self forceByteCodeDisplay:true
self forceByteCodeDisplay:false
"
"Created: / 4.2.1998 / 00:22:54 / cg"
! !
!JavaMethod class methodsFor:'signature parsing'!
argSigArrayFromSignature:aSignature
"given a signature, return a specArray for the arguments"
|s|
s := aSignature readStream.
s next ~~ $( ifTrue:[self halt].
^ self argSigArrayFromStream:s.
"
JavaMethod argSigArrayFromSignature:'(LObject;)V'
JavaMethod argSigArrayFromSignature:'(BB)S'
JavaMethod argSigArrayFromSignature:'(LObject;LObject;II)V'
"
!
argSigArrayFromStream:s
"parse an argSpec, return an array of specs - see java doc"
|argSpec spec|
spec := #().
[s atEnd or:[s peek == $)]] whileFalse:[
"/ s peek == Character space ifTrue:[
"/ s next
"/ ] ifFalse:[
argSpec := self fieldTypeFromStream:s in:nil.
spec := spec copyWith:argSpec.
"/ ]
].
^ spec
"Modified: / 8.1.1998 / 19:10:20 / cg"
!
argSignatureFromArgTypeArray:arr
|sig|
sig := ''.
arr do:[:el |
|jCLass|
jCLass := el.
jCLass isJavaClass ifFalse:[
jCLass := JavaVM classForJavaClassObject:el
].
jCLass isJavaClass ifTrue:[
sig := sig , jCLass typeName.
sig := sig, ';'
] ifFalse:[
self halt.
]
].
^ sig
"
self argSignatureFromArgTypeArray:
(Array
with:(JavaVM javaClassObjectForClass:(Java at:'com.sun.java.swing.JComponent')))
"
"Modified: / 13.2.1998 / 14:57:58 / cg"
!
argSpecFromSignature:aSignature withName:name
"given a signature, return a spec"
|s argSpec|
s := aSignature readStream.
s next ~~ $( ifTrue:[self halt. ^ name].
argSpec := self argSpecFromStream:s in:nil.
s next ~~ $) ifTrue:[self halt. ^ name].
^ name , ' (' , argSpec , ')'
"
JavaMethod argSpecFromSignature:'(LObject;)V' withName:'foo'
JavaMethod argSpecFromSignature:'(BB)S' withName:'foo'
"
"Modified: / 8.1.1998 / 19:05:36 / cg"
!
argSpecFromStream:s in:aPackage
"parse an argSpec - see java doc"
|argSpec spec|
spec := ''.
[s atEnd or:[s peek == $)]] whileFalse:[
"/ s peek == Character space ifTrue:[
"/ s next
"/ ] ifFalse:[
argSpec := self fieldTypeFromStream:s in:aPackage.
spec size ~~ 0 ifTrue:[
spec := spec , ' '
].
spec := spec , argSpec.
"/ ]
].
^ spec
"Created: 18.3.1997 / 11:06:44 / cg"
!
argSpecWithArgsFromStream:s in:aPackage
"parse an argSpec - see java doc"
^ self argSpecWithArgsFromStream:s in:aPackage argNames:nil
"Modified: / 8.1.1998 / 19:21:00 / cg"
!
argSpecWithArgsFromStream:s in:aPackage argNames:argNames
"parse an argSpec - see java doc"
|argSpec spec argNr nm|
argNr := 1.
spec := ''.
[s atEnd or:[s peek == $)]] whileFalse:[
argSpec := self fieldTypeFromStream:s in:aPackage.
(argNames notNil
and:[argNames size >= argNr
and:[(nm := argNames at:argNr) notNil]]) ifFalse:[
nm := 'arg' , argNr printString.
].
argSpec := argSpec , ' ' , nm.
spec size ~~ 0 ifTrue:[
spec := spec , ', '
].
spec := spec , argSpec.
argNr := argNr + 1.
].
^ spec
"Created: / 8.1.1998 / 19:20:36 / cg"
"Modified: / 8.1.1998 / 21:14:33 / cg"
!
fieldTypeFromStream:s in:aPackage
"parse a fieldTypeSpec - see java doc"
|typeChar typeSym elType size className nm|
typeChar := s next.
typeSym := SignatureTypeCodes at:typeChar ifAbsent:#unknown.
typeSym == #unknown ifTrue:[
^ typeSym
].
typeSym == #object ifTrue:[
className := s upTo:$;.
"/ strip off default
nm := className.
aPackage notNil ifTrue:[
(nm startsWith:aPackage) ifTrue:[
nm := nm copyFrom:(aPackage size + 2).
].
].
nm := nm copyReplaceAll:$/ with:$..
^ nm
].
typeSym == #array ifTrue:[
s peek isDigit ifTrue:[
size := Integer readFrom:s.
elType := self fieldTypeFromStream:s in:aPackage.
^ elType , '[' , size printString , ']'
].
elType := self fieldTypeFromStream:s in:aPackage.
^ elType , '[]'
].
^ typeSym
"Created: / 18.3.1997 / 11:07:56 / cg"
"Modified: / 18.7.1998 / 22:57:06 / cg"
!
numArgsFromSignature:aSignature
"given a signature, return the number of args"
|s|
s := aSignature readStream.
s next ~~ $( ifTrue:[self halt].
^ self numArgsFromStream:s.
"
JavaMethod numArgsFromSignature:'(LObject;)V'
JavaMethod numArgsFromSignature:'(BB)S'
JavaMethod numArgsFromSignature:'()V'
"
!
numArgsFromStream:s
"parse an argSpec - see java doc"
|n t|
n := 0.
[s atEnd or:[s peek == $)]] whileFalse:[
t := self fieldTypeFromStream:s in:nil.
"/
"/ some args count as 2
"/
t == #long ifTrue:[
n := n + 2.
] ifFalse:[
t == #double ifTrue:[
n := n + 2
] ifFalse:[
n := n + 1.
]
]
].
^ n
"Modified: / 8.1.1998 / 19:10:25 / cg"
!
retValSpecFromSignature:aSignature in:aPackage
"given a signature, return a spec"
|s argSpec retvalSpec|
s := aSignature readStream.
s next ~~ $( ifTrue:[self halt].
argSpec := self argSpecFromStream:s in:aPackage.
s next ~~ $) ifTrue:[self halt].
retvalSpec := self retvalSpecFromStream:s in:aPackage.
^ retvalSpec
"
JavaMethod retValSpecFromSignature:'(LObject;)V'
JavaMethod retValSpecFromSignature:'(BB)S'
"
"Created: 18.3.1997 / 11:11:50 / cg"
!
returnTypeFromSignature:aSignature in:aPackage
"given a signature, return its type as a string"
|s c|
s := aSignature readStream.
(c := s peek) ~~ $( ifTrue:[
c == $' ifTrue:[
[s peek ~= $'] whileTrue:[s next].
s next.
^ (self retvalSpecFromStream:s in:aPackage)
].
^ (self retvalSpecFromStream:s in:aPackage)
].
s next.
self argSpecFromStream:s in:aPackage.
s next ~~ $) ifTrue:[self halt. ^ nil].
^ (self retvalSpecFromStream:s in:aPackage)
"
JavaMethod returnTypeFromSignature:'(LObject;)V'
JavaMethod returnTypeFromSignature:'(BB)S'
JavaMethod returnTypeFromSignature:'()J'
JavaMethod returnTypeFromSignature:'''first''J'
"
"Created: / 1.8.1997 / 10:54:31 / cg"
"Modified: / 8.1.1998 / 19:09:06 / cg"
!
returnsVoidFromSignature:aSignature
"given a signature, return true if it returns void, false if not"
^ (self typeFromSignature:aSignature in:nil) = 'void'
"
JavaMethod returnsVoidFromSignature:'(LObject;)V'
JavaMethod returnsVoidFromSignature:'(BB)S'
"
"Modified: / 8.1.1998 / 19:13:53 / cg"
!
retvalSpecFromStream:s in:aPackage
"parse a retvalSpec - see java doc"
|spec|
s atEnd ifTrue:[self halt. ^ #void].
s peek == $V ifTrue:[^ #void].
spec := self fieldTypeFromStream:s in:aPackage.
spec knownAsSymbol ifTrue:[
^ spec asSymbol
].
^ spec
"Created: / 18.3.1997 / 11:12:19 / cg"
"Modified: / 7.4.1998 / 22:28:27 / cg"
!
specComponentsWithArgsFromSignature:aSignature withName:name in:aPackage
"given a signature, return a spec"
|s argSpec retvalSpec|
s := aSignature readStream.
s next ~~ $( ifTrue:[self halt. ^ name].
argSpec := self argSpecWithArgsFromStream:s in:aPackage.
s next ~~ $) ifTrue:[self halt. ^ name].
retvalSpec := self retvalSpecFromStream:s in:aPackage.
^ Array with:retvalSpec with:name with:argSpec
"
JavaMethod specWithArgsFromSignature:'(LObject;)V' withName:'foo' in:nil
JavaMethod specComponentsWithArgsFromSignature:'(LObject;)V' withName:'foo' in:nil
"
"Created: 18.3.1997 / 11:06:22 / cg"
"Modified: 1.8.1997 / 11:03:50 / cg"
!
specFromSignature:aSignature withName:name argNames:argNames in:aPackage
"given a signature, return a spec"
|s argSpec retvalSpec|
s := aSignature readStream.
s next ~~ $( ifTrue:[self halt. ^ name].
argSpec := self argSpecWithArgsFromStream:s in:aPackage argNames:argNames.
s next ~~ $) ifTrue:[self halt. ^ name].
retvalSpec := self retvalSpecFromStream:s in:aPackage.
^ retvalSpec , ' ' , name , ' (' , argSpec , ')'
"
JavaMethod specFromSignature:'(LObject;)V' withName:'foo' argNames:#('a') in:nil
JavaMethod specFromSignature:'(BB)S' withName:'foo' argNames:#('a' 'b') in:nil
"
"Created: / 18.3.1997 / 11:06:22 / cg"
"Modified: / 8.1.1998 / 21:14:43 / cg"
!
specFromSignature:aSignature withName:name in:aPackage
"given a signature, return a spec"
|s argSpec retvalSpec|
s := aSignature readStream.
s next ~~ $( ifTrue:[self halt. ^ name].
argSpec := self argSpecFromStream:s in:aPackage.
s next ~~ $) ifTrue:[self halt. ^ name].
retvalSpec := self retvalSpecFromStream:s in:aPackage.
^ retvalSpec , ' ' , name , ' (' , argSpec , ')'
"
JavaMethod specFromSignature:'(LObject;)V' withName:'foo' in:nil
JavaMethod specFromSignature:'(BB)S' withName:'foo' in:nil
"
"Created: / 18.3.1997 / 11:06:22 / cg"
"Modified: / 8.1.1998 / 21:06:32 / cg"
!
specTextFromSignature:aSignature withName:name
"given a signature, return a spec as boldified text"
|s argSpec retvalSpec|
s := aSignature readStream.
s next ~~ $( ifTrue:[self halt. ^ name].
argSpec := self argSpecFromStream:s in:nil.
s next ~~ $) ifTrue:[self halt. ^ name].
retvalSpec := self retvalSpecFromStream:s in:nil.
^ retvalSpec , ' ' , (name asText allBold) , ' (' , argSpec , ')'
"
JavaMethod specTextFromSignature:'(LObject;)V' withName:'foo'
JavaMethod specTextFromSignature:'(BB)S' withName:'foo'
"
"Modified: / 8.1.1998 / 19:11:20 / cg"
!
specTextWithArgsFromSignature:aSignature withName:name in:aPackage
"given a signature, return a spec"
|s argSpec retvalSpec|
s := aSignature readStream.
s next ~~ $( ifTrue:[self halt. ^ name].
argSpec := self argSpecWithArgsFromStream:s in:aPackage.
s next ~~ $) ifTrue:[self halt. ^ name].
retvalSpec := self retvalSpecFromStream:s in:aPackage.
^ retvalSpec , ' ' , (name asText allBold) , ' (' , argSpec , ')'
"
JavaMethod specWithArgsFromSignature:'(LObject;)V' withName:'foo' in:nil
JavaMethod specWithArgsFromSignature:'(BB)S' withName:'foo' in:nil
"
"Modified: 20.3.1997 / 12:50:10 / cg"
"Created: 1.8.1997 / 10:43:57 / cg"
!
specWithArgsFromSignature:aSignature withName:name in:aPackage
"given a signature, return a spec"
|s argSpec retvalSpec|
s := aSignature readStream.
s next ~~ $( ifTrue:[self halt. ^ name].
argSpec := self argSpecWithArgsFromStream:s in:aPackage.
s next ~~ $) ifTrue:[self halt. ^ name].
retvalSpec := self retvalSpecFromStream:s in:aPackage.
^ retvalSpec , ' ' , name , ' (' , argSpec , ')'
"
JavaMethod specWithArgsFromSignature:'(LObject;)V' withName:'foo' in:nil
JavaMethod specWithArgsFromSignature:'(BB)S' withName:'foo' in:nil
"
"Created: 18.3.1997 / 11:06:22 / cg"
"Modified: 20.3.1997 / 12:50:10 / cg"
!
typeFromSignature:aSignature in:package
"given a signature, return its type as a string"
|s c|
s := aSignature readStream.
(c := s peek) ~~ $( ifTrue:[
c == $' ifTrue:[
s next.
[s peek ~= $'] whileTrue:[s next].
s next.
^ (self retvalSpecFromStream:s in:package)
].
^ (self retvalSpecFromStream:s in:package)
].
s next.
self argSpecFromStream:s in:nil.
s next ~~ $) ifTrue:[self halt. ^ nil].
^ (self retvalSpecFromStream:s in:package)
"
JavaMethod typeFromSignature:'(LObject;)Ljava/lang/Object'
JavaMethod typeFromSignature:'(LObject;)Ljava/lang/Object' in:'java.lang'
"
"Created: / 1.8.1997 / 10:50:38 / cg"
"Modified: / 8.1.1998 / 19:09:31 / cg"
! !
!JavaMethod methodsFor:'accessing'!
accessFlags
"java calls this the modifiers"
^ accessFlags
"Created: / 9.4.1998 / 17:49:44 / cg"
!
argSignature
^ self class argSigArrayFromSignature:signature
!
constantPool
^ javaClass constantPool
"Modified: 16.4.1996 / 12:36:27 / cg"
"Created: 16.4.1996 / 15:28:50 / cg"
!
containingClass
^ javaClass
!
decompiledBytecode
|s|
s := '' writeStream.
JavaDecompiler decompile:self to:s.
^ s contents
"Created: 7.4.1997 / 20:10:37 / cg"
!
decompiledSource
|s|
s := '' writeStream.
self decompileSourceTo:s.
^ s contents
"Modified: 30.7.1997 / 16:27:55 / cg"
!
exceptionHandlerTable
^ nil
"Created: / 16.10.1998 / 01:50:51 / cg"
!
exceptionTable
^ nil
"Created: / 16.10.1998 / 01:51:04 / cg"
!
hasLineNumberInformation
^ lineNumberTable notNil
"Created: 16.4.1996 / 12:34:04 / cg"
"Modified: 16.4.1996 / 12:49:06 / cg"
!
javaByteCode
"/ ^ javaByteCode
^ byteCode
"Created: 16.4.1996 / 14:55:44 / cg"
"Modified: 1.8.1997 / 00:08:45 / cg"
!
javaClass
^ javaClass
"Modified: 16.4.1996 / 12:36:27 / cg"
"Created: 16.4.1996 / 14:55:44 / cg"
!
lineNumber
lineNumberTable isNil ifTrue:[^ nil].
^ lineNumberTable at:2
"Created: 16.4.1996 / 12:34:04 / cg"
"Modified: 16.4.1996 / 12:49:06 / cg"
!
lineNumberTable
^ lineNumberTable
"Created: 16.4.1996 / 12:34:04 / cg"
"Modified: 16.4.1996 / 12:49:06 / cg"
!
literalsDetect:aBlock ifNone:exceptionBlock
"execute a one arg block for each of our literals.
return the first literal for which aBlock returns true"
"/ sigh - must first extract all accessed literals ...
"/ must deparse the byteCode in order to do this.
|walker|
walker := JavaByteCodeEnumerator new.
walker literalAction:[:pc :slotIndex :const | Transcript showCR:const].
walker decompile:self to:nil.
self halt.
"Created: / 9.11.1999 / 15:21:40 / cg"
"Modified: / 9.11.1999 / 15:36:02 / cg"
!
localVariableTable
^ localVariableTable
"
JavaMethod allInstancesDo:[:m| m localVariableTable notNil ifTrue:[self halt]]
"
!
methodArgAndVarNames
^ ((1 to:self numArgs) collect:[:i | 'arg' , i printString])
,
((1 to:self numVars) collect:[:i | 'local' , i printString])
!
methodArgNames
|nA|
nA := self numArgs.
localVariableTable notNil ifTrue:[
^ (1 to:nA) collect:
[:argIndex |
|slot name|
"/ search for an entry with that index (slot),
"/ which has is valid at PC 0
self isStatic ifTrue:[
slot := argIndex
] ifFalse:[
slot := argIndex + 1
].
name := localVariableTable nameForSlot:slot atPC:0.
name isNil ifTrue:[
'arg' , argIndex printString
] ifFalse:[
name
].
]
].
^ (1 to:nA) collect:[:i | 'arg' , i printString]
!
name
^ (selector copyWithoutLast:signature size) asSymbol
"Created: 16.4.1996 / 11:34:22 / cg"
!
numLocals
^super numVars.
"/ numLocals isNil ifTrue:[^ 0].
"/ ^ numLocals
"Modified: / 3.1.1998 / 21:15:38 / cg"
!
numVars
|n|
"/ a Java-stackframe includes the args in the locals
n := self numLocals - self numArgs.
^ n
"Modified: / 13.1.1998 / 17:34:37 / cg"
!
previousVersion
^ nil
"Created: 30.7.1997 / 15:56:18 / cg"
!
retValSignature
^ self class retValSpecFromSignature:signature in:nil
"Modified: / 8.1.1998 / 19:06:40 / cg"
!
returnType
"/ ^ returnType
^ self class typeFromSignature:signature in:nil.
"Modified: / 16.10.1998 / 00:17:43 / cg"
!
returnTypeClass
|cls returnType|
(returnType := self returnType) isNil ifTrue:[
self halt.
].
cls := Java at:returnType.
cls notNil ifTrue:[^ cls].
returnType == #void ifTrue:[
^ nil
].
returnType == #double ifTrue:[
'warning: no returnTypeClass for double' printCR.
"/ self halt:'no returnTypeClass for double'.
^ nil
].
returnType == #float ifTrue:[
'warning: no returnTypeClass for float' printCR.
"/ self halt:'no returnTypeClass for float'.
^ nil
].
returnType == #long ifTrue:[
'warning: no returnTypeClass for long' printCR.
"/ self halt:'no returnTypeClass for long'.
^ nil
].
returnType == #int ifTrue:[
'warning: no returnTypeClass for int' printCR.
"/ self halt:'no returnTypeClass for int'.
^ nil
].
returnType == #boolean ifTrue:[
'warning: no returnTypeClass for boolean' printCR.
"/ self halt:'no returnTypeClass for boolean'.
^ nil
].
self halt.
^ nil
"Created: / 13.2.1998 / 15:08:26 / cg"
"Modified: / 16.10.1998 / 00:16:07 / cg"
!
returnsDouble
^ self returnType == #double
"Modified: / 16.10.1998 / 00:18:24 / cg"
!
returnsLong
^ self returnType == #long
"Modified: / 16.10.1998 / 00:18:41 / cg"
!
returnsVoid
^ self returnType == #void
"Modified: / 16.10.1998 / 00:18:53 / cg"
!
selector
"/ could theoretically be extracted from my classes
"/ methodDictionary via:
"/ ^ javaClass methodDictionary keyAtValue:self ifAbsent:nil.
^ selector
"Created: / 7.1.1998 / 14:05:11 / cg"
"Modified: / 16.10.1998 / 13:41:06 / cg"
!
setAccessFlags:flags
accessFlags := flags.
"Created: 16.4.1996 / 11:34:14 / cg"
!
setCode:codeBytes maxStack:max_stack maxLocals:max_locals u1:unknown1 u2:unknown2
"/ javaByteCode := codeBytes.
byteCode := codeBytes.
"/ numStack := max_stack.
"/ numLocals := max_locals.
super numberOfVars:max_locals.
super stackSize:max_stack.
"/ self displayString printNL.
"/ ' nStack: ' print. numStack print.
"/ ' nLocal: ' print. numLocals print.
"/ ' u1: ' print. unknown1 print.
"/ ' u2: ' print. unknown2 printNL.
"Modified: 1.8.1997 / 00:08:32 / cg"
!
setJavaClass:aJavaClass
javaClass := aJavaClass
"Modified: 16.4.1996 / 12:36:27 / cg"
"Created: 16.4.1996 / 15:28:15 / cg"
!
setLineNumberTable:anArrayOfPCtoLineAssociations
"since this uses up lots of memory, compress it"
|allBytes allWords idx|
allBytes := allWords := true.
anArrayOfPCtoLineAssociations do:[:assoc |
assoc key > 255 ifTrue:[
allBytes := false.
assoc key > 16rFFFF ifTrue:[
allWords := false.
].
].
assoc value > 255 ifTrue:[
allBytes := false.
assoc value > 16rFFFF ifTrue:[
allWords := false
].
].
].
allBytes ifTrue:[
lineNumberTable := ByteArray new:(anArrayOfPCtoLineAssociations size * 2).
] ifFalse:[
allWords ifTrue:[
lineNumberTable := WordArray new:(anArrayOfPCtoLineAssociations size * 2).
] ifFalse:[
lineNumberTable := Array new:(anArrayOfPCtoLineAssociations size * 2).
]
].
idx := 1.
anArrayOfPCtoLineAssociations do:[:assoc |
lineNumberTable at:idx put:assoc key.
lineNumberTable at:idx+1 put:assoc value.
idx := idx + 2.
].
"Created: 16.4.1996 / 12:34:04 / cg"
"Modified: 16.4.1996 / 12:49:06 / cg"
!
setLocalVariableTable:anArray
localVariableTable := anArray.
!
setName:nameString signature:signatureString
selector := (nameString , signatureString) asSymbol.
self setSignature:signatureString
!
setSignature:aString
|numArgs tooManyArgs returnType|
signature := aString asSymbol.
numArgs := self class numArgsFromSignature:aString.
(tooManyArgs := (numArgs > self class maxNumberOfArguments)) ifTrue:[
numArgs := 0.
].
self numberOfArgs:numArgs.
returnType := self class typeFromSignature:aString in:nil.
"/ for the convenience of the VM, also mirror the return type in
"/ the flags ...
returnType == #void ifTrue:[
accessFlags := accessFlags bitOr:R_VOID
] ifFalse:[
returnType == #long ifTrue:[
accessFlags := accessFlags bitOr:R_LONG
] ifFalse:[
returnType == #double ifTrue:[
accessFlags := accessFlags bitOr:R_DOUBLE
]
]
].
tooManyArgs ifTrue:[
^ ArgumentSignal
raiseRequestWith:self
errorString:'too many args in method'
].
"Created: / 16.4.1996 / 11:34:29 / cg"
"Modified: / 16.10.1998 / 00:17:12 / cg"
!
signature
^ signature
"Created: 16.4.1996 / 11:34:29 / cg"
!
source
|classSource|
"/ self isNative ifTrue:[
"/ ^ 'native method'
"/ ].
ForceByteCodeDisplay == true ifTrue:[
^ self decompiledBytecode
].
lineNumberTable notNil ifTrue:[
classSource := javaClass source.
classSource notNil ifTrue:[^ classSource].
].
^ self decompiledSource
"Modified: / 4.1.1998 / 13:48:35 / cg"
!
sourceFilename
^ javaClass sourceFile
!
sourceLineNumber
ForceByteCodeDisplay == true ifTrue:[
^ 1
].
lineNumberTable notNil ifTrue:[
^ lineNumberTable at:2
].
^ 1
"Created: 30.7.1997 / 15:40:45 / cg"
"Modified: 30.7.1997 / 15:46:12 / cg"
! !
!JavaMethod methodsFor:'debugging'!
breakPoint
Debugger enter:thisContext sender withMessage:'breakpoint'
"Modified: / 9.1.1998 / 23:01:17 / cg"
!
clearBreakPoint
self hasCode ifTrue:[
MessageTracer unwrapMethod:self
].
accessFlags := (accessFlags bitClear:A_BREAKPOINT).
"Modified: / 13.11.1998 / 23:31:00 / cg"
!
isCounting
^ false.
"Created: / 12.1.1998 / 20:02:23 / cg"
!
isCountingMemoryUsage
^ false.
"Created: / 12.1.1998 / 20:03:22 / cg"
!
setBreakPoint
self hasCode ifTrue:[
MessageTracer trapMethod:self
].
accessFlags := (accessFlags bitOr:A_BREAKPOINT).
"Modified: / 13.11.1998 / 23:30:45 / cg"
!
setTraceFullPoint
"not yet implemented"
"Modified: / 9.1.1998 / 23:01:17 / cg"
"Created: / 12.1.1998 / 20:04:45 / cg"
!
setTracePoint
"not yet implemented"
"Modified: / 9.1.1998 / 23:01:17 / cg"
"Created: / 12.1.1998 / 20:04:02 / cg"
!
setTraceSenderPoint
"not yet implemented"
"Modified: / 9.1.1998 / 23:01:17 / cg"
"Created: / 12.1.1998 / 20:04:35 / cg"
!
startCounting
"not yet implemented"
"Modified: / 9.1.1998 / 23:01:17 / cg"
"Created: / 12.1.1998 / 20:05:01 / cg"
!
startCountingMemoryUsage
"not yet implemented"
"Modified: / 9.1.1998 / 23:01:17 / cg"
"Created: / 12.1.1998 / 20:05:04 / cg"
!
startTiming
"not yet implemented"
"Modified: / 9.1.1998 / 23:01:17 / cg"
"Created: / 12.1.1998 / 20:04:57 / cg"
! !
!JavaMethod methodsFor:'decompiling'!
decompileSourceTo:aStream
"/ self isNative ifFalse:[
"/ self isAbstract ifFalse:[
aStream nextPutAll:'// '; cr.
aStream nextPutAll:'// decompiled source'; cr.
aStream nextPutAll:'// '; cr.
aStream cr.
SignalSet anySignal handle:[:ex |
ex signal == Object haltSignal ifTrue:[ex reject].
ex signal == MessageTracer breakpointSignal ifTrue:[ex reject].
ex signal == Signal noHandlerSignal ifTrue:[ex reject].
aStream nextPutAll:'error while decompiling:'.
aStream cr; cr; spaces:4.
aStream nextPutAll:ex errorString.
aStream cr.
aStream nextPutAll:ex suspendedContext printString.
aStream cr.
aStream nextPutAll:ex suspendedContext sender printString.
aStream cr.
aStream nextPutAll:ex suspendedContext sender sender printString.
aStream cr.
aStream nextPutAll:ex suspendedContext sender sender sender printString.
aStream cr.
aStream nextPutAll:ex suspendedContext sender sender sender sender printString.
aStream cr.
aStream nextPutAll:ex suspendedContext sender sender sender sender sender printString.
aStream cr.
JavaDecompiler decompile:self to:aStream.
ex return
] do:[
aStream nextPutAll:(JavaDeparser decompile:self).
].
"/ ].
"/ ].
"Created: / 30.7.1997 / 16:28:09 / cg"
"Modified: / 20.10.1998 / 10:01:08 / cg"
!
decompiler
^ JavaDecompiler
"Created: 30.7.1997 / 16:36:48 / cg"
!
isMethod
"return true, if the receiver is some kind of method;
true returned here - the method is redefined from Object."
^ true
"Created: / 13.11.1998 / 23:57:40 / cg"
!
originalMethod
^ self
"Created: / 13.1.1998 / 15:03:05 / cg"
! !
!JavaMethod methodsFor:'error handling'!
invalidByteCode
self isAbstract ifTrue:[
^ AbstractMethodInvokationSignal raise.
].
((self class numArgsFromSignature:signature) > self class maxNumberOfArguments) ifTrue:[
^ self error:'method cannot be executed - too many args'
].
^ super invalidByteCode
"Created: / 27.1.1998 / 21:48:01 / cg"
"Modified: / 27.1.1998 / 21:50:19 / cg"
!
invalidMethodRef
self halt.
^ nil.
"Modified: / 27.1.1998 / 21:50:19 / cg"
"Created: / 16.10.1998 / 11:27:21 / cg"
!
nullClassPointer
JavaVM throwClassNotFoundException
! !
!JavaMethod methodsFor:'methodref interchangability'!
method
^ self
! !
!JavaMethod methodsFor:'misc'!
fromMethod:aJavaMethod
"copy values from another javaMethod"
flags := aJavaMethod flags.
byteCode := aJavaMethod byteCode.
accessFlags := aJavaMethod accessFlags.
selector := aJavaMethod selector.
javaClass := aJavaMethod javaClass.
signature := aJavaMethod signature.
lineNumberTable := aJavaMethod lineNumberTable.
localVariableTable := aJavaMethod localVariableTable.
"Modified: / 16.10.1998 / 01:27:19 / cg"
!
updateClassRefsFrom:oldClass to:newClass
javaClass == oldClass ifTrue:[
"/ invalidate
byteCode := nil.
]
"Created: / 6.1.1998 / 18:19:48 / cg"
! !
!JavaMethod methodsFor:'printing & storing'!
displayString
javaClass isNil ifTrue:[
^ self class name , '(???)'
].
^ self class name , '(' , javaClass displayString , '::' , self signatureName , ')'
"Modified: / 25.9.1999 / 23:04:01 / cg"
!
printStringForBrowserWithSelector:dummySelector
"/ self isStatic ifTrue:[
"/ ^ 'static ' , self signatureName
"/ ].
"/ self isBreakpointed ifTrue:[
"/ ^ (LabelAndIcon '!! ' , self signatureName
"/ ].
self name = #'<init>' ifTrue:[
^ self class specTextFromSignature:signature withName:(javaClass lastName).
].
^ self signatureNameText
"Modified: / 5.11.1998 / 19:44:55 / cg"
!
shortDisplayString
^ javaClass name , '::' , self signatureNameWithoutReturnType
!
signatureName
"return a string to be used when browsing"
^ self class specFromSignature:signature withName:(self name) in:nil
"Modified: / 8.1.1998 / 19:15:33 / cg"
!
signatureNameFor:name withArgsIn:aPackage
"return a string to be used when decompiling"
^ self class specWithArgsFromSignature:signature withName:name in:aPackage
"Created: 25.3.1997 / 18:49:45 / cg"
!
signatureNameIn:aPackage
"return a string to be used when browsing"
^ self class specFromSignature:signature withName:(self name) in:aPackage
"Created: 18.3.1997 / 11:11:01 / cg"
!
signatureNameText
"return a text to be used when browsing"
^ self class specTextFromSignature:signature withName:(self name)
"Created: 30.7.1997 / 14:40:29 / cg"
!
signatureNameTextFor:name withArgsIn:aPackage
"return a text to be used when decompiling"
^ self class specTextWithArgsFromSignature:signature withName:name in:aPackage
"Created: 25.3.1997 / 18:49:45 / cg"
"Modified: 1.8.1997 / 10:44:28 / cg"
!
signatureNameWithArgNames:argNames
"return a string to be used when browsing"
|myName|
myName := self name.
myName = '<init>' ifTrue:[
myName := javaClass name
].
^ self class specFromSignature:signature withName:myName argNames:argNames in:nil
"Created: / 8.1.1998 / 21:04:03 / cg"
"Modified: / 8.1.1998 / 21:22:38 / cg"
!
signatureNameWithArgNames:argNames in:package
"return a string to be used when browsing"
|myName|
myName := self name.
myName = '<init>' ifTrue:[
myName := javaClass name
].
^ self class specFromSignature:signature withName:myName argNames:argNames in:package
"Modified: / 8.1.1998 / 21:05:52 / cg"
"Created: / 8.1.1998 / 21:23:03 / cg"
!
signatureNameWithArgsIn:aPackage
"return a string to be used when browsing"
^ self class specWithArgsFromSignature:signature withName:(self name) in:aPackage
"Created: 20.3.1997 / 12:44:17 / cg"
!
signatureNameWithoutReturnType
"return a string to be used when browsing"
^ self class argSpecFromSignature:signature withName:(self name)
! !
!JavaMethod methodsFor:'queries'!
handlerFor:anException at:pc
"return an exceptionHandlers pc, for an exception of the given type,
occurring at pc. Returns nil, if there is none."
|handlerTable|
(handlerTable := self exceptionHandlerTable) isNil ifTrue:[^ nil].
handlerTable do:[:entry |
|hpc|
hpc := entry handlerPCFor:anException at:pc in:self.
hpc notNil ifTrue:[^ hpc].
].
^ nil
"Created: / 16.10.1998 / 01:18:40 / cg"
"Modified: / 25.9.1999 / 23:07:01 / cg"
!
hasResource
^ false
!
isAbstract
^ (accessFlags bitAnd:A_ABSTRACT) ~~ 0
!
isBreakpointed
^ (accessFlags bitAnd:A_BREAKPOINT) ~~ 0
"Modified: / 11.1.1998 / 13:28:43 / cg"
!
isFinal
^ (accessFlags bitAnd:A_FINAL) ~~ 0
!
isIgnored
"not really a java attribute;
added to allow browsing"
^ false.
"Created: 30.7.1997 / 15:34:33 / cg"
!
isJavaClassRef
^ false
"Created: / 9.11.1999 / 17:16:20 / cg"
!
isJavaMethod
^ true
"Created: / 10.11.1998 / 18:24:51 / cg"
!
isNative
^ (accessFlags bitAnd:A_NATIVE) ~~ 0
!
isPrivate
^ (accessFlags bitAnd:A_PRIVATE) ~~ 0
!
isProtected
^ (accessFlags bitAnd:A_PROTECTED) ~~ 0
!
isPublic
^ (accessFlags bitAnd:A_PUBLIC) ~~ 0
!
isStatic
^ (accessFlags bitAnd:A_STATIC) ~~ 0
!
isSynchronized
^ (accessFlags bitAnd:A_SYNCHRONIZED) ~~ 0
!
isTraced
^ false
"Modified: / 11.1.1998 / 13:28:43 / cg"
"Created: / 11.1.1998 / 13:38:11 / cg"
!
isUnloaded
^ false
!
isWrapped
^ self isBreakpointed
"Modified: / 11.1.1998 / 13:28:43 / cg"
"Created: / 11.1.1998 / 13:38:04 / cg"
!
lineNumberForPC:pc
|last num text classSource|
num := nil.
ForceByteCodeDisplay == true ifFalse:[
lineNumberTable notNil ifTrue:[
classSource := javaClass source.
classSource notNil ifTrue:[
lineNumberTable pairWiseDo:[:lPc :lNr |
lPc >= pc ifTrue:[
lPc == pc ifTrue:[^ lNr].
last isNil ifTrue:[^ lNr].
^ last.
].
last := lNr.
].
last notNil ifTrue:[
^ last
].
^ lineNumberTable at:2
].
].
].
"/ decompile and look which line the pc falls into
ForceByteCodeDisplay == true ifTrue:[
text := self decompiledBytecode asCollectionOfLines.
] ifFalse:[
text := self decompiledSource asCollectionOfLines.
].
text keysAndValuesDo:[:lineNr :line |
|nr|
(line startsWith:' ') ifFalse:[
nr := Integer readFrom:line onError:0.
nr >= pc ifTrue:[
^ lineNr
]
]
].
^ num
"Modified: / 14.1.1998 / 13:30:54 / cg"
!
package
^ 'none'
"Created: 5.2.1997 / 11:31:26 / cg"
!
quickLineNumberForPC:pc
|last|
lineNumberTable notNil ifTrue:[
lineNumberTable pairWiseDo:[:lPc :lNr |
lPc >= pc ifTrue:[
lPc == pc ifTrue:[^ lNr].
last isNil ifTrue:[^ lNr].
^ last.
].
last := lNr.
].
last notNil ifTrue:[
^ last
].
^ lineNumberTable at:2
].
^ nil
"Modified: / 14.1.1998 / 13:30:54 / cg"
"Created: / 10.11.1998 / 14:18:22 / cg"
!
referencesGlobal:aGlobalName
"return true, if this method refers to a global named aGlobalName"
|walker any|
"/ quick check, if constantPool includes a methodRef for this
"/ selector.
any := false.
self javaClass constantPool do:[:const |
(const isNumber
or:[const isString
or:[const isNil]]) ifFalse:[
const isJavaClass ifTrue:[
any := any or:[const fullName = aGlobalName].
] ifFalse:[
const isJavaClassRef ifTrue:[
any := any or:[const fullName = aGlobalName].
]
].
].
].
any ifFalse:[^ false].
"/ sigh - must extract all accessed literals ...
"/ must deparse the byteCode in order to do this.
walker := JavaByteCodeEnumerator new.
walker
literalAction:
[:pc :slotIndex :const |
|mSel|
(const isNumber
or:[const isString
or:[const isNil]]) ifFalse:[
const isJavaClass ifTrue:[
mSel := const fullName.
] ifFalse:[
const isJavaClassRef ifTrue:[
mSel := const fullName.
]
].
].
mSel notNil ifTrue:[
"/ Transcript showCR:mSel.
mSel = aGlobalName ifTrue:[
^ true
]
].
].
walker decompile:self to:nil.
"Created: / 9.11.1999 / 17:15:46 / cg"
"Modified: / 9.11.1999 / 17:18:02 / cg"
!
sends:aSelectorSymbol
"return true, if this method contains a message-send
with aSelectorSymbol as selector."
|walker any|
"/ quick check, if constantPool includes a methodRef for this
"/ selector.
any := false.
self javaClass constantPool do:[:const |
(const isNumber
or:[const isString
or:[const isNil]]) ifFalse:[
const isJavaMethod ifTrue:[
any := any or:[const selector = aSelectorSymbol].
] ifFalse:[
const isJavaMethodRef ifTrue:[
any := any or:[const signature = aSelectorSymbol].
]
].
].
].
any ifFalse:[^ false].
"/ sigh - must extract all accessed literals ...
"/ must deparse the byteCode in order to do this.
walker := JavaByteCodeEnumerator new.
walker
literalAction:
[:pc :slotIndex :const |
|mSel|
(const isNumber
or:[const isString
or:[const isNil]]) ifFalse:[
const isJavaMethod ifTrue:[
mSel := const selector.
] ifFalse:[
const isJavaMethodRef ifTrue:[
mSel := const signature.
]
].
].
mSel notNil ifTrue:[
"/ Transcript showCR:mSel.
mSel = aSelectorSymbol ifTrue:[
^ true
]
].
].
walker decompile:self to:nil.
"Created: / 9.11.1999 / 15:38:14 / cg"
"Modified: / 9.11.1999 / 17:06:03 / cg"
!
who
"return the class and selector of where I am defined in."
|sel|
javaClass isNil ifTrue:[^ nil].
sel := selector.
"/ sel := javaClass methodDictionary keyAtValue:self ifAbsent:nil.
sel isNil ifTrue:[^ nil].
^ Method::MethodWhoInfo class:javaClass selector:sel.
"Modified: / 16.10.1998 / 13:42:10 / cg"
! !
!JavaMethod methodsFor:'signature parsing'!
XXXspecWithArgsFromSignature:aSignature withName:name in:aPackage
"given a signature, return a spec with args"
|s argSpec retvalSpec|
s := aSignature readStream.
s next ~~ $( ifTrue:[self halt. ^ name].
argSpec := self argSpecWithArgsFromStream:s in:aPackage.
s next ~~ $) ifTrue:[self halt. ^ name].
retvalSpec := self retvalSpecFromStream:s in:aPackage.
^ retvalSpec , ' ' , name , ' (' , argSpec , ')'
"
JavaMethod specFromSignature:'(LObject;)V' withName:'foo'
JavaMethod specFromSignature:'(BB)S' withName:'foo'
"
"Created: / 8.1.1998 / 19:17:58 / cg"
! !
!JavaMethod class methodsFor:'documentation'!
version
^ '$Header: /home/jv/Projects/SmalltalkX/repositories/cvs/stx/libjava/JavaMethod.st,v 1.90 1999/11/09 16:58:38 cg Exp $'
! !
JavaMethod initialize!