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VMBlockTest.class.st
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VMBlockTest.class.st
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Class {
#name : #VMBlockTest,
#superclass : #VMInterpreterTests,
#pools : [
'VMClassIndices',
'VMObjectIndices'
],
#category : #'VMMakerTests-InterpreterTests'
}
{ #category : #supports }
VMBlockTest >> anEmptyMethod [
]
{ #category : #'as yet unclassified' }
VMBlockTest >> evaluatingABlock [
[^1] value
]
{ #category : #helpers }
VMBlockTest >> installFullBlockClosureClass [
| aClass |
aClass := self
newClassInOldSpaceWithSlots: 0
instSpec: FullBlockClosure instSpec.
memory setHashBitsOf: aClass to: ClassFullBlockClosureCompactIndex.
memory
storePointer: ClassFullBlockClosureCompactIndex
ofObject: memory classTableFirstPage
withValue: aClass
]
{ #category : #supports }
VMBlockTest >> methodReturningABlock [
<compilerOptions: #(- #optionConstantBlockClosure) >
^ []
]
{ #category : #'as yet unclassified' }
VMBlockTest >> methodReturningABlockInsideABlockWithLocal [
true ifTrue: [
| anArgument |
anArgument := 2.
^ [ anArgument ] ]
]
{ #category : #supports }
VMBlockTest >> methodReturningABlockWithTwoArguments [
^ [:a :b]
]
{ #category : #supports }
VMBlockTest >> methodWithLocalReturningABlock [
| a |
a:= 1.
^ [ a ]
]
{ #category : #running }
VMBlockTest >> setUp [
super setUp.
self initializeSpecialSelectors
]
{ #category : #'as yet unclassified' }
VMBlockTest >> testCreatingABlockCapturesReceiver [
| methodReturning initialMethod |
initialMethod := self createMethodOopFromHostMethod:
self class >> #anEmptyMethod.
methodReturning := self createMethodOopFromHostMethod:
self class >> #methodReturningABlockInsideABlockWithLocal.
self installFullBlockClosureClass.
"We want to avoid baseFrameReturn (base frame initialisation)"
stackBuilder addNewFrame method: initialMethod.
stackBuilder addNewFrame
method: methodReturning;
receiver: memory trueObject.
stackBuilder buildStack.
interpreter setMethod: stackBuilder lastFrame method.
interpreter instructionPointer: (methodBuilder bytecodeAt: 0 forMethod: methodReturning).
interpreter interpretWhile: [ interpreter method = methodReturning ].
self assert: (memory fetchPointer: FullClosureReceiverIndex ofObject: interpreter stackTop) equals: memory trueObject
]
{ #category : #testing }
VMBlockTest >> testCreatingABlockClosureKnowsCompiledBlock [
| methodReturning initialMethod placeTakenByLiterals closure blockInitialPC compiledBlock |
initialMethod := self createMethodOopFromHostMethod:
self class >> #anEmptyMethod.
methodReturning := self createMethodOopFromHostMethod:
self class >> #methodReturningABlock.
self installFullBlockClosureClass.
"We want to avoid baseFrameReturn (base frame initialisation)"
stackBuilder addNewFrame method: initialMethod.
stackBuilder addNewFrame
method: methodReturning;
receiver: memory trueObject.
stackBuilder buildStack.
interpreter setMethod: stackBuilder lastFrame method.
"Bytecode index is 1-based, use 0 to set IP just before the first bytecode.
The first thing interpretWhile: dows is to fetch a new bytecode"
interpreter instructionPointer:
(methodBuilder bytecodeAt: 0 forMethod: methodReturning).
interpreter interpretWhile: [ interpreter method = methodReturning ].
"The start pc is after the two literals of the block"
blockInitialPC := memory wordSize * 2.
compiledBlock := memory
fetchPointer: FullClosureCompiledBlockIndex
ofObject: interpreter stackTop.
self
assert: (interpreter startPCOfMethod: compiledBlock)
equals: blockInitialPC
]
{ #category : #testing }
VMBlockTest >> testCreatingABlockClosureShouldCopyUsedMethodVariable [
| methodReturning initialMethod |
initialMethod := self createMethodOopFromHostMethod:
self class >> #anEmptyMethod.
methodReturning := self createMethodOopFromHostMethod:
self class >> #methodReturningABlockInsideABlockWithLocal.
self installFullBlockClosureClass.
"We want to avoid baseFrameReturn (base frame initialisation)"
stackBuilder addNewFrame method: initialMethod.
stackBuilder addNewFrame
method: methodReturning;
receiver: memory trueObject.
stackBuilder buildStack.
interpreter setMethod: stackBuilder lastFrame method.
interpreter instructionPointer: (methodBuilder bytecodeAt: 0 forMethod: methodReturning).
interpreter interpretWhile: [ interpreter method = methodReturning ].
"We assign 1 to the local variable of the method, see methodWithLocalReturningABlock"
self
assert: (memory fetchPointer: FullClosureFirstCopiedValueIndex ofObject: interpreter stackTop) equals: (memory integerObjectOf: 2)
]
{ #category : #testing }
VMBlockTest >> testCreatingABlockClosureShouldHaveOuterContextObject [
| methodReturning initialMethod |
initialMethod := self createMethodOopFromHostMethod:
self class >> #anEmptyMethod.
methodReturning := self createMethodOopFromHostMethod:
self class >> #methodReturningABlock.
self installFullBlockClosureClass.
"We want to avoid baseFrameReturn (base frame initialisation)"
stackBuilder addNewFrame method: initialMethod.
stackBuilder addNewFrame
method: methodReturning;
receiver: memory trueObject.
stackBuilder buildStack.
interpreter setMethod: stackBuilder lastFrame method.
interpreter instructionPointer: (methodBuilder bytecodeAt: 0 forMethod: methodReturning).
interpreter interpretWhile: [ interpreter method = methodReturning ].
"The current frame returned, the context is widowed, but the VM does not mark what are the alive frames all the time"
self deny: (interpreter isWidowedContext: (memory outerContextOf: interpreter stackTop)).
"From time to time, the VM will mark the frames that are alive, and then be able to recognize that a context is widowed"
interpreter writeBackHeadFramePointers.
self assert: (interpreter isWidowedContext: (memory outerContextOf: interpreter stackTop))
]
{ #category : #'as yet unclassified' }
VMBlockTest >> testCreatingABlockInsideABlockClosureShouldCopyUsedBlockVariable [
| methodReturning initialMethod |
initialMethod := self createMethodOopFromHostMethod:
self class >> #anEmptyMethod.
methodReturning := self createMethodOopFromHostMethod:
self class >> #methodReturningABlockInsideABlockWithLocal.
self installFullBlockClosureClass.
"We want to avoid baseFrameReturn (base frame initialisation)"
stackBuilder addNewFrame method: initialMethod.
stackBuilder addNewFrame
method: methodReturning;
receiver: memory trueObject.
stackBuilder buildStack.
interpreter setMethod: stackBuilder lastFrame method.
interpreter instructionPointer: (methodBuilder bytecodeAt: 0 forMethod: methodReturning).
interpreter interpretWhile: [ interpreter method = methodReturning ].
"We assign 2 to the local variable of the block, see methodReturningABlockInsideABlock"
self assert: (memory fetchPointer: FullClosureFirstCopiedValueIndex ofObject: interpreter stackTop) equals: (memory integerObjectOf: 2).
]
{ #category : #testing }
VMBlockTest >> testCreatingABlockWithoutArgumentsClosureShouldHaveNoArgument [
| methodReturning initialMethod |
initialMethod := self createMethodOopFromHostMethod:
self class >> #anEmptyMethod.
methodReturning := self createMethodOopFromHostMethod:
self class >> #methodReturningABlock.
self installFullBlockClosureClass.
"We want to avoid baseFrameReturn (base frame initialisation)"
stackBuilder addNewFrame method: initialMethod.
stackBuilder addNewFrame
method: methodReturning;
receiver: memory trueObject.
stackBuilder buildStack.
interpreter setMethod: stackBuilder lastFrame method.
interpreter instructionPointer: (methodBuilder bytecodeAt: 0 forMethod: methodReturning).
interpreter interpretWhile: [ interpreter method = methodReturning ].
self
assert: (memory fetchPointer: FullClosureNumArgsIndex ofObject: interpreter stackTop) equals: (memory integerObjectOf: 0).
]
{ #category : #'as yet unclassified' }
VMBlockTest >> testEvaluatingABlock [
| methodReturning initialMethod |
initialMethod := self createMethodOopFromHostMethod:
self class >> #anEmptyMethod.
methodReturning := self createMethodOopFromHostMethod:
self class >> #evaluatingABlock.
self installFullBlockClosureClass.
"We want to avoid baseFrameReturn (base frame initialisation)"
stackBuilder addNewFrame method: initialMethod.
stackBuilder addNewFrame
method: methodReturning;
receiver: memory trueObject.
stackBuilder buildStack.
interpreter setMethod: stackBuilder lastFrame method.
interpreter instructionPointer: (methodBuilder bytecodeAt: 0 forMethod: methodReturning).
"Interpret while we are in the correct method, and until the value message to the block"
interpreter interpretWhile: [
interpreter method = methodReturning
and: [ interpreter currentBytecode ~= 121 ] ].
"The top of the stack should be the fullblock closure object"
self
assert: (memory fetchClassOf: interpreter stackTop)
equals: (memory classAtIndex: ClassFullBlockClosureCompactIndex)
]
{ #category : #testing }
VMBlockTest >> testPushClosureBytecodePushesClosure [
| methodReturning initialMethod |
initialMethod := self createMethodOopFromHostMethod:
self class >> #anEmptyMethod.
methodReturning := self createMethodOopFromHostMethod:
self class >> #methodReturningABlock.
self installFullBlockClosureClass.
"We want to avoid baseFrameReturn (base frame initialisation)"
stackBuilder addNewFrame method: initialMethod.
stackBuilder addNewFrame
method: methodReturning;
receiver: memory trueObject.
stackBuilder buildStack.
interpreter setMethod: stackBuilder lastFrame method.
interpreter interpretWhile: [ interpreter method = methodReturning ].
self
assert: (memory fetchClassOf: interpreter stackTop)
equals: (memory classAtIndex: ClassFullBlockClosureCompactIndex)
]