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SlangStructType.class.st
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SlangStructType.class.st
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Class {
#name : #SlangStructType,
#superclass : #SlangClass,
#classVars : [
'StructTypeNameCache'
],
#category : #'Slang-Types'
}
{ #category : #accessing }
SlangStructType class >> baseStructClass [
"The base class of the hierarchy of structs.
All state and behavior of this class will not be included for generation.
Redefine if you have a your own abstract struct superclass"
^ SlangStructType
]
{ #category : #translation }
SlangStructType class >> filteredInstVarNames [
^ self allInstVarNames
]
{ #category : #translation }
SlangStructType class >> isAccessor: aSelector [
"Answer if aSelector is simply an accessor method for one of our fields."
^(self instVarIndexFor: (aSelector copyWithout: $:) ifAbsent: [0]) > 0
]
{ #category : #translation }
SlangStructType class >> isStructClass [
^true
]
{ #category : #translation }
SlangStructType class >> isTypePointerToStruct: type [
| index |
StructTypeNameCache ifNil:
[StructTypeNameCache := Set new.
self allSubclassesDo:
[:sc| StructTypeNameCache add: sc name; add: sc structTypeName ]].
^type notNil
and: [(index := type indexOf: $*) > 0
and: [StructTypeNameCache anySatisfy:
[:structType|
(type beginsWith: structType)
and: [index > structType size]]]]
]
{ #category : #translation }
SlangStructType class >> isTypeStruct: type [
StructTypeNameCache ifNil:
[StructTypeNameCache := Set new.
self allSubclassesDo:
[:sc| StructTypeNameCache add: sc name; add: sc structTypeName]].
^type notNil
and: [StructTypeNameCache anySatisfy:
[:structType|
type = structType]]
]
{ #category : #translation }
SlangStructType class >> needsTypeTag [
self instVarNamesAndTypesForTranslationDo:
[:ivn :type|
((type isArray ifTrue: [type] ifFalse: [{type}]) anySatisfy:
[:str|
str isString
and: [str includesSubstring: self structTagName]]) ifTrue:
[^true]].
^false
"VMStructType allSubclasses select: [:sc| sc needsTypeTag]"
]
{ #category : #translation }
SlangStructType class >> printTypedefOn: aStream [
aStream nextPutAll: 'typedef struct '.
self needsTypeTag
ifTrue: [ aStream
nextPutAll: self structTagName;
space ].
aStream
nextPut: ${;
cr.
self
instVarNamesAndTypesForTranslationDo: [ :ivn :typeArg |
| type |
ivn first == $#
ifTrue: [ aStream nextPutAll: ivn ]
ifFalse: [ type := typeArg.
#(BytesPerWord BaseHeaderSize BytesPerOop)
do: [ :sizeConstant |
| index sizeConstantSize |
(type notNil
and: [ (index := type indexOf: sizeConstant ifAbsent: 0) > 0 ])
ifTrue: [ sizeConstantSize := self constantClass classPool at: sizeConstant.
type := (type at: index + 1) = sizeConstantSize
ifTrue: [ type := type copyReplaceFrom: index to: index + 1 with: #().
type size = 1
ifTrue: [ type first ]
ifFalse: [ type ] ] ] ].
type
ifNotNil: [ type isArray
ifTrue: [ aStream tab: 1.
aStream nextPutAll: type first.
(type first last isSeparator or: [ type first last = $* ])
ifFalse: [ aStream tab: 2 ].
aStream nextPutAll: ivn.
type last first isSeparator
ifFalse: [ aStream space ].
aStream nextPutAll: type last ]
ifFalse: [ aStream tab: 1.
aStream nextPutAll: type.
(type last isSeparator or: [ type last = $* ])
ifFalse: [ aStream tab: 1 ].
aStream nextPutAll: ivn ] ].
aStream nextPut: $; ].
aStream cr ].
aStream
nextPutAll: ' } ';
nextPutAll: self structTypeName;
nextPut: $;;
cr.
self name ~= self structTypeName
ifTrue: [ (self withAllSuperclasses
copyUpThrough: (self class whichClassIncludesSelector: #structTypeName) instanceSide)
do: [ :structClass |
aStream
cr;
nextPutAll: '#define ';
nextPutAll: structClass name;
space;
nextPutAll: self structTypeName ].
aStream cr ].
aStream flush
]
{ #category : #translation }
SlangStructType class >> returnTypeForAccessor: aSelector [
| varName deStructTag |
varName := aSelector copyWithout: $:.
deStructTag := [:decl| decl copyReplaceAll: 'struct ', self structTagName with: self structTypeName].
self instVarNamesAndTypesForTranslationDo:
[:var :typeSpec|
var = varName ifTrue:
[^typeSpec isArray
ifTrue: [(deStructTag value: typeSpec first), ' ', typeSpec last]
ifFalse: [deStructTag value: typeSpec]]].
^nil
"InterpreterStackPage returnTypeForAccessor: #nextPage:"
]
{ #category : #translation }
SlangStructType class >> structTagName [
^'_', self structTypeName
]
{ #category : #translation }
SlangStructType class >> structTargetKindForDeclaration: decl [
StructTypeNameCache ifNil:
[StructTypeNameCache := Set new.
self allSubclassesDo:
[:sc| StructTypeNameCache add: sc name; add: sc structTypeName ]].
^(decl notNil
and: [(StructTypeNameCache includes: decl)
or: [StructTypeNameCache anySatisfy:
[:structType|
(decl beginsWith: structType)
and: [(decl indexOf: $* ifAbsent: [decl indexOf: Character space]) > structType size]]]]) ifTrue:
[(decl indexOf: $*) > 0
ifTrue: [#pointer]
ifFalse: [#struct]]
]
{ #category : #translation }
SlangStructType class >> structTargetKindForType: type [
StructTypeNameCache ifNil:
[StructTypeNameCache := Set new.
self allSubclassesDo:
[:sc| StructTypeNameCache add: sc name; add: sc structTypeName ]].
^(type notNil
and: [StructTypeNameCache anySatisfy:
[:structType|
(type beginsWith: structType)
and: [type size = structType size
or: [(type at: structType size + 1) isAlphaNumeric not]]]]) ifTrue:
[(type includes: $*)
ifTrue: [#pointer]
ifFalse: [#struct]]
]
{ #category : #translation }
SlangStructType class >> structTypeName [
"Provide the typedef name. Subclases can override."
^self name
]
{ #category : #translation }
SlangStructType class >> typeForSelf [
"Answer the type to give self if appropriate, or nil if not."
^self structTypeName, ' *'
]
{ #category : #translation }
SlangStructType class >> voidStructTypeCache [
StructTypeNameCache := nil
]
{ #category : #macros }
SlangStructType >> setField: fieldName to: fieldValue [
| slot |
slot := self class slotNamed: fieldName.
slot write: fieldValue to: self
]
{ #category : #macros }
SlangStructType >> withFieldsDo: forEachBlock separatedBy: separatorBlock [
self class allSlots
do: [ :aSlot | forEachBlock value: aSlot name value: (aSlot read: self) ]
separatedBy: separatorBlock
]
{ #category : #macros }
SlangStructType >> withStructNameDo: aFullBlockClosure [
^ aFullBlockClosure value: self class structTypeName
]