/usr/share/gnu-smalltalk/kernel/ByteArray.st is in gnu-smalltalk-common 3.2.5-1.
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|
| ByteArray Method Definitions
|
|
======================================================================"
"======================================================================
|
| Copyright 1988,92,94,95,99,2000,2001,2002,2006,2008,2009
| Free Software Foundation, Inc.
| Written by Steve Byrne.
|
| This file is part of the GNU Smalltalk class library.
|
| The GNU Smalltalk class library is free software; you can redistribute it
| and/or modify it under the terms of the GNU Lesser General Public License
| as published by the Free Software Foundation; either version 2.1, or (at
| your option) any later version.
|
| The GNU Smalltalk class library is distributed in the hope that it will be
| useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
| General Public License for more details.
|
| You should have received a copy of the GNU Lesser General Public License
| along with the GNU Smalltalk class library; see the file COPYING.LIB.
| If not, write to the Free Software Foundation, 59 Temple Place - Suite
| 330, Boston, MA 02110-1301, USA.
|
======================================================================"
ArrayedCollection subclass: ByteArray [
<shape: #byte>
<import: CSymbols>
<category: 'Collections-Sequenceable'>
<comment: 'My instances are similar to strings in that they are both represented as
a sequence of bytes, but my individual elements are integers, where as
a String''s elements are characters.'>
ByteArray class >> fromCData: aCObject size: anInteger [
"Answer a ByteArray containing anInteger bytes starting at the location pointed
to by aCObject"
<category: 'instance creation'>
<primitive: VMpr_ByteArray_fromCData_size>
^SystemExceptions.WrongClass signalOn: anInteger mustBe: SmallInteger
]
asString [
"Answer a String whose character's ASCII codes are the receiver's contents"
<category: 'converting'>
| string size |
size := self size.
string := String new: size.
string
replaceFrom: 1
to: size
withByteArray: self
startingAt: 1.
^string
]
asUnicodeString [
"Answer a UnicodeString whose character's codes are the receiver's contents.
This is not implemented unless you load the I18N package."
<category: 'converting'>
self shouldNotImplement
]
isLiteralObject [
"Answer whether the receiver is expressible as a Smalltalk literal."
<category: 'storing'>
^self isReadOnly not
]
storeLiteralOn: aStream [
"Put a Smalltalk literal evaluating to the receiver on aStream."
<category: 'storing'>
self class == ByteArray ifFalse: [ ^super storeLiteralOn: aStream ].
aStream nextPut: $#.
aStream nextPut: $[.
self do:
[:elt |
aStream
print: elt;
space].
aStream nextPut: $]
]
storeOn: aStream [
"Put Smalltalk code evaluating to the receiver on aStream."
<category: 'storing'>
self class == ByteArray ifFalse: [ ^super storeOn: aStream ].
self storeLiteralOn: aStream.
self isReadOnly ifFalse: [aStream nextPutAll: ' copy']
]
at: anIndex ifAbsent: aBlock [
"Answer the index-th indexed instance variable of the receiver"
<category: 'built ins'>
<primitive: VMpr_Object_basicAt>
^self checkIndexableBounds: anIndex ifAbsent: aBlock
]
objectAt: index [
"Access the Smalltalk object (OOP) at the given index in the receiver.
Indices are 1-based just like for other Smalltalk access."
<category: 'more advanced accessing'>
^self
type: 9
at: index
]
charAt: index [
"Access the C char at the given index in the receiver. The value is
returned as a Smalltalk Character.
Indices are 1-based just like for other Smalltalk access."
<category: 'more advanced accessing'>
^self
type: 0
at: index
]
unsignedCharAt: index [
"Access the C unsigned char at the given index in the receiver.
The value is returned as a Smalltalk Character.
Indices are 1-based just like for other Smalltalk access."
<category: 'more advanced accessing'>
^self
type: 1
at: index
]
ucharAt: index [
"Access the C unsigned char at the given index in the receiver.
The value is returned as a Smalltalk Character.
Indices are 1-based just like for other Smalltalk access."
<category: 'more advanced accessing'>
^self
type: 1
at: index
]
shortAt: index [
"Access the C short int at the given index in the receiver.
Indices are 1-based just like for other Smalltalk access."
<category: 'more advanced accessing'>
^self
type: 2
at: index
]
unsignedShortAt: index [
"Access the C unsigned short int at the given index in the receiver.
Indices are 1-based just like for other Smalltalk access."
<category: 'more advanced accessing'>
^self
type: 3
at: index
]
ushortAt: index [
"Access the C unsigned short int at the given index in the receiver.
Indices are 1-based just like for other Smalltalk access."
<category: 'more advanced accessing'>
^self
type: 3
at: index
]
longAt: index [
"Access the C long int at the given index in the receiver.
Indices are 1-based just like for other Smalltalk access."
<category: 'more advanced accessing'>
^self
type: 4
at: index
]
unsignedLongAt: index [
"Access the C unsigned long int at the given index in the receiver.
Indices are 1-based just like for other Smalltalk access."
<category: 'more advanced accessing'>
^self
type: 5
at: index
]
ulongAt: index [
"Access the C unsigned long int at the given index in the receiver.
Indices are 1-based just like for other Smalltalk access."
<category: 'more advanced accessing'>
^self
type: 5
at: index
]
intAt: index [
"Access the C int at the given index in the receiver.
Indices are 1-based just like for other Smalltalk access."
<category: 'more advanced accessing'>
^self
type: 10
at: index
]
unsignedIntAt: index [
"Access the C unsigned int at the given index in the receiver.
Indices are 1-based just like for other Smalltalk access."
<category: 'more advanced accessing'>
^self
type: 11
at: index
]
uintAt: index [
"Access the C unsigned int at the given index in the receiver.
Indices are 1-based just like for other Smalltalk access."
<category: 'more advanced accessing'>
^self
type: 11
at: index
]
floatAt: index [
"Access the C float at the given index in the receiver.
Indices are 1-based just like for other Smalltalk access."
<category: 'more advanced accessing'>
^self
type: 6
at: index
]
doubleAt: index [
"Access the C double at the given index in the receiver.
Indices are 1-based just like for other Smalltalk access."
<category: 'more advanced accessing'>
^self
type: 7
at: index
]
longDoubleAt: index [
"Access the C long double at the given index in the receiver.
Indices are 1-based just like for other Smalltalk access."
<category: 'more advanced accessing'>
^self
type: 12
at: index
]
stringAt: index [
"Access the string pointed by the C `char *' at the given index in the
receiver. Indices are 1-based just like for other Smalltalk access."
<category: 'more advanced accessing'>
^self
type: 8
at: index
]
objectAt: index put: value [
"Store a pointer (OOP) to the Smalltalk object identified by `value',
at the given index in the receiver.
Indices are 1-based just like for other Smalltalk access."
<category: 'more advanced accessing'>
^self
type: 9
at: index
put: value
]
charAt: index put: value [
"Store as a C char the Smalltalk Character or Integer object
identified by `value', at the given index in the receiver, using
sizeof(char) bytes - i.e. 1 byte.
Indices are 1-based just like for other Smalltalk access."
<category: 'more advanced accessing'>
^self
type: 0
at: index
put: value
]
unsignedCharAt: index put: value [
"Store as a C char the Smalltalk Character or Integer object
identified by `value', at the given index in the receiver, using
sizeof(char) bytes - i.e. 1 byte.
Indices are 1-based just like for other Smalltalk access."
<category: 'more advanced accessing'>
^self
type: 1
at: index
put: value
]
ucharAt: index put: value [
"Store as a C char the Smalltalk Character or Integer object
identified by `value', at the given index in the receiver, using
sizeof(char) bytes - i.e. 1 byte.
Indices are 1-based just like for other Smalltalk access."
<category: 'more advanced accessing'>
^self
type: 1
at: index
put: value
]
shortAt: index put: value [
"Store the Smalltalk Integer object identified by `value', at the
given index in the receiver, using sizeof(short) bytes.
Indices are 1-based just like for other Smalltalk access."
<category: 'more advanced accessing'>
^self
type: 2
at: index
put: value
]
unsignedShortAt: index put: value [
"Store the Smalltalk Integer object identified by `value', at the
given index in the receiver, using sizeof(short) bytes.
Indices are 1-based just like for other Smalltalk access."
<category: 'more advanced accessing'>
^self
type: 3
at: index
put: value
]
ushortAt: index put: value [
"Store the Smalltalk Integer object identified by `value', at the
given index in the receiver, using sizeof(short) bytes.
Indices are 1-based just like for other Smalltalk access."
<category: 'more advanced accessing'>
^self
type: 3
at: index
put: value
]
longAt: index put: value [
"Store the Smalltalk Integer object identified by `value', at the
given index in the receiver, using sizeof(long) bytes.
Indices are 1-based just like for other Smalltalk access."
<category: 'more advanced accessing'>
^self
type: 4
at: index
put: value
]
unsignedLongAt: index put: value [
"Store the Smalltalk Integer object identified by `value', at the
given index in the receiver, using sizeof(long) bytes.
Indices are 1-based just like for other Smalltalk access."
<category: 'more advanced accessing'>
^self
type: 5
at: index
put: value
]
ulongAt: index put: value [
"Store the Smalltalk Integer object identified by `value', at the
given index in the receiver, using sizeof(long) bytes.
Indices are 1-based just like for other Smalltalk access."
<category: 'more advanced accessing'>
^self
type: 5
at: index
put: value
]
intAt: index put: value [
"Store the Smalltalk Integer object identified by `value', at the
given index in the receiver, using sizeof(int) bytes.
Indices are 1-based just like for other Smalltalk access."
<category: 'more advanced accessing'>
^self
type: 10
at: index
put: value
]
unsignedIntAt: index put: value [
"Store the Smalltalk Integer object identified by `value', at the
given index in the receiver, using sizeof(int) bytes.
Indices are 1-based just like for other Smalltalk access."
<category: 'more advanced accessing'>
^self
type: 11
at: index
put: value
]
uintAt: index put: value [
"Store the Smalltalk Integer object identified by `value', at the
given index in the receiver, using sizeof(int) bytes.
Indices are 1-based just like for other Smalltalk access."
<category: 'more advanced accessing'>
^self
type: 11
at: index
put: value
]
floatAt: index put: value [
"Store the Smalltalk Float object identified by `value', at the
given index in the receiver, writing it like a C float.
Indices are 1-based just like for other Smalltalk access."
<category: 'more advanced accessing'>
^self
type: 6
at: index
put: value
]
doubleAt: index put: value [
"Store the Smalltalk Float object identified by `value', at the
given index in the receiver, writing it like a C double.
Indices are 1-based just like for other Smalltalk access."
<category: 'more advanced accessing'>
^self
type: 7
at: index
put: value
]
longDoubleAt: index put: value [
"Store the Smalltalk Float object identified by `value', at the
given index in the receiver, writing it like a C double.
Indices are 1-based just like for other Smalltalk access."
<category: 'more advanced accessing'>
^self
type: 12
at: index
put: value
]
stringAt: index put: value [
"Store the Smalltalk String object identified by `value', at the
given index in the receiver, writing it like a *FRESHLY
ALLOCATED* C string. It is the caller's responsibility to free
it if necessary.
Indices are 1-based just like for other Smalltalk access."
<category: 'more advanced accessing'>
^self
type: 8
at: index
put: value
]
growSize [
"Answer the amount by which a ByteArray will grow if necessary.
Note - explicit growing of a Collection is a private thing you
should not employ"
<category: 'private'>
^self size
]
castTo: type [
"Give access to the receiver as a value with the given CType."
<category: 'CObject'>
^(CObject new storage: self) castTo: type
]
type: type at: index [
"Private - Access in the receiver a value with the given type
at the given 1-based index."
<category: 'private'>
^(CObject new storage: self) at: index - 1 type: type
]
type: type at: index put: value [
"Private - Write to the receiver a value with the given type
at the given 1-based index."
<category: 'private'>
self isReadOnly ifTrue: [^SystemExceptions.ReadOnlyObject signal].
^(CObject new storage: self) at: index - 1 put: value type: type
]
byteAt: index [
"Answer the index-th indexed instance variable of the receiver"
<category: 'built ins'>
<primitive: VMpr_Object_basicAt>
self checkIndexableBounds: index
]
byteAt: index put: value [
"Store the `value' byte in the index-th indexed instance variable
of the receiver"
<category: 'built ins'>
<primitive: VMpr_Object_basicAtPut>
self checkIndexableBounds: index put: value
]
= aCollection [
"Answer whether the receiver's items match those in aCollection"
<category: 'basic'>
<primitive: VMpr_ArrayedCollection_equal>
^false
]
hash [
"Answer an hash value for the receiver"
<category: 'built ins'>
<primitive: VMpr_String_hash>
^0
]
indexOf: anElement startingAt: anIndex ifAbsent: exceptionBlock [
"Answer the first index > anIndex which contains anElement.
Invoke exceptionBlock and answer its result if no item is found"
<category: 'basic'>
<primitive: VMpr_ArrayedCollection_indexOfStartingAt>
"If anIndex is just past the end of the collection, don't raise
an error (this is the most generic solution that avoids that
#indexOf: fails when the collection is empty."
^(anIndex < 1 or: [anIndex > (self size + 1)])
ifTrue: [self checkIndexableBounds: anIndex]
ifFalse: [exceptionBlock value]
]
indexOf: anElement startingAt: anIndex [
"Answer the first index > anIndex which contains anElement.
Invoke exceptionBlock and answer its result if no item is found"
<category: 'basic'>
<primitive: VMpr_ArrayedCollection_indexOfStartingAt>
"If anIndex is just past the end of the collection, don't raise
an error (this is the most generic solution that avoids that
#indexOf: fails when the collection is empty."
^(anIndex < 1 or: [anIndex > (self size + 1)])
ifTrue: [self checkIndexableBounds: anIndex]
ifFalse: [0]
]
replaceFrom: start to: stop withString: aString startingAt: replaceStart [
"Replace the characters from start to stop with the
ASCII codes contained in aString (which, actually, can be
any variable byte class), starting at the replaceStart
location of aString"
<category: 'built ins'>
<primitive: VMpr_ArrayedCollection_replaceFromToWithStartingAt>
^super
replaceFrom: start
to: stop
with: aString
startingAt: replaceStart
]
replaceFrom: start to: stop with: aByteArray startingAt: replaceStart [
"Replace the characters from start to stop with the
bytes contained in aByteArray (which, actually, can be
any variable byte class), starting at the replaceStart
location of aByteArray"
<category: 'built ins'>
<primitive: VMpr_ArrayedCollection_replaceFromToWithStartingAt>
^super
replaceFrom: start
to: stop
with: aByteArray
startingAt: replaceStart
]
asCData [
"Allocate memory with malloc for a copy of the receiver, and return
a pointer to it as a CByte."
<category: 'CObject'>
^self asCData: CByteType
]
asCData: aCType [
"Allocate memory with malloc for a copy of the receiver, and return
it converted to a CObject with the given type"
<category: 'built ins'>
<primitive: VMpr_ByteArray_asCData>
^self primitiveFailed
]
]
|