Klasse ConditionalFlowInfo
java.lang.Object
org.aspectj.org.eclipse.jdt.internal.compiler.flow.FlowInfo
org.aspectj.org.eclipse.jdt.internal.compiler.flow.ConditionalFlowInfo
Record conditional initialization status during definite assignment analysis
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Feldübersicht
Von Klasse geerbte Felder org.aspectj.org.eclipse.jdt.internal.compiler.flow.FlowInfo
DEAD_END, FREE_TYPEVARIABLE, NON_NULL, NULL, NULL_FLAG_MASK, POTENTIALLY_NON_NULL, POTENTIALLY_NULL, POTENTIALLY_UNKNOWN, REACHABLE, tagBits, UNKNOWN, UNREACHABLE, UNREACHABLE_BY_NULLANALYSIS, UNREACHABLE_OR_DEAD, UNROOTED
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Methodenübersicht
Modifizierer und TypMethodeBeschreibungaddInitializationsFrom
(FlowInfo otherInits) Add other inits to this flow info, then return this.addNullInfoFrom
(FlowInfo otherInits) Add all null information from otherInits to this flow info and return this.addPotentialInitializationsFrom
(FlowInfo otherInits) Compose other inits over this flow info, then return this.copy()
Return a deep copy of the current instance.boolean
Check if any null info has been recorded for a given local variable.Return the flow info that would result from the path associated to the value false for the condition expression that generated this flow info.Return the flow info that would result from the path associated to the value true for the condition expression that generated this flow info.boolean
isDefinitelyAssigned
(FieldBinding field) Check status of definite assignment for a field.boolean
Check status of definite assignment for a local.boolean
Check status of definite non-null value for a given local variable.boolean
Check status of definite null value for a given local variable.boolean
Check status of definite unknown value for a given local variable.boolean
Check status of potential assignment for a field.boolean
Check status of potential assignment for a local variable.boolean
Check status of potential null assignment for a local.boolean
Check status of potential null assignment for a local.boolean
Return true if the given local may have been assigned to an unknown value.boolean
Return true if the given local is protected by a test against a non null value.boolean
Return true if the given local is protected by a test against null.void
Record that a local variable got checked to be non null.void
Record that a local variable got checked to be null.void
Record a field got definitely assigned.void
Record a local got definitely assigned.void
Record a local got definitely assigned to a non-null value.void
Record a local got definitely assigned to null.void
Record a local got definitely assigned to an unknown value.void
Record a local may have got assigned to non-null (set the bit on existing info).void
Record a local may have got assigned to null (set the bit on existing info).void
Record a local may have got assigned to unknown (set the bit on existing info).mergeDefiniteInitsWith
(UnconditionalFlowInfo otherInits) mergedWith
(UnconditionalFlowInfo otherInits) Return the intersection of this and otherInits, that is one of: the receiver updated in the following way: intersection of definitely assigned variables, union of potentially assigned variables, similar operations for null, or the receiver or otherInits if the other one is non reachable. otherInits is not affected, and is not returned either (no need to protect the result).Return a copy of this unconditional flow info, deprived from its null info.void
Resets the definite and potential initialization info for the given local variablevoid
Reset all null-information about a given local.Return a flow info that carries the same information as the result ofinitsWhenTrue
, but warrantied to be different from this.
Caveat: side effects on the result may affect components of this.setReachMode
(int reachMode) Set this flow info reach mode and return this.toString()
Return a new flow info that holds the same information as this would after a call to unconditionalInits, but leaving this info unaffected.Return a new flow info that holds the same information as this would after a call tounconditionalInits
followed by the erasure of fields specific information, but leaving this flow info unaffected.Return a flow info that merges the possible paths of execution described by this flow info.Return a new flow info that holds the same information as this would after a call tounconditionalInits
, but leaving this info unaffected.Von Klasse geerbte Methoden org.aspectj.org.eclipse.jdt.internal.compiler.flow.FlowInfo
cannotBeDefinitelyNullOrNonNull, cannotBeNull, canOnlyBeNull, conditional, initial, markNullStatus, mergedOptimizedBranches, mergedOptimizedBranchesIfElse, mergeNullStatus, nullStatus, reachMode, tagBitsToNullStatus
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Felddetails
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initsWhenTrue
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initsWhenFalse
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Methodendetails
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addInitializationsFrom
Beschreibung aus Klasse kopiert:FlowInfo
Add other inits to this flow info, then return this. The operation semantics are to match as closely as possible the application to this flow info of all the operations that resulted into otherInits.- Angegeben von:
addInitializationsFrom
in KlasseFlowInfo
- Parameter:
otherInits
- other inits to add to this- Gibt zurück:
- this, modified according to otherInits information
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addNullInfoFrom
Beschreibung aus Klasse kopiert:FlowInfo
Add all null information from otherInits to this flow info and return this. The operation models the effect of an unconditional sequence of this flow info and otherInits.- Angegeben von:
addNullInfoFrom
in KlasseFlowInfo
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addPotentialInitializationsFrom
Beschreibung aus Klasse kopiert:FlowInfo
Compose other inits over this flow info, then return this. The operation semantics are to wave into this flow info the consequences of a possible path into the operations that resulted into otherInits. The fact that this path may be left unexecuted under peculiar conditions results into less specific results thanaddInitializationsFrom
.- Angegeben von:
addPotentialInitializationsFrom
in KlasseFlowInfo
- Parameter:
otherInits
- other inits to compose over this- Gibt zurück:
- this, modified according to otherInits information
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asNegatedCondition
- Setzt außer Kraft:
asNegatedCondition
in KlasseFlowInfo
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copy
Beschreibung aus Klasse kopiert:FlowInfo
Return a deep copy of the current instance. -
initsWhenFalse
Beschreibung aus Klasse kopiert:FlowInfo
Return the flow info that would result from the path associated to the value false for the condition expression that generated this flow info. May be this flow info if it is not an instance ofConditionalFlowInfo
. May have a side effect on subparts of this flow info (subtrees get merged).- Angegeben von:
initsWhenFalse
in KlasseFlowInfo
- Gibt zurück:
- the flow info associated to the false branch of the condition that generated this flow info
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initsWhenTrue
Beschreibung aus Klasse kopiert:FlowInfo
Return the flow info that would result from the path associated to the value true for the condition expression that generated this flow info. May be this flow info if it is not an instance ofConditionalFlowInfo
. May have a side effect on subparts of this flow info (subtrees get merged).- Angegeben von:
initsWhenTrue
in KlasseFlowInfo
- Gibt zurück:
- the flow info associated to the true branch of the condition that generated this flow info
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isDefinitelyAssigned
Beschreibung aus Klasse kopiert:FlowInfo
Check status of definite assignment for a field.- Angegeben von:
isDefinitelyAssigned
in KlasseFlowInfo
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isDefinitelyAssigned
Beschreibung aus Klasse kopiert:FlowInfo
Check status of definite assignment for a local.- Angegeben von:
isDefinitelyAssigned
in KlasseFlowInfo
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isDefinitelyNonNull
Beschreibung aus Klasse kopiert:FlowInfo
Check status of definite non-null value for a given local variable.- Angegeben von:
isDefinitelyNonNull
in KlasseFlowInfo
- Parameter:
local
- the variable to ckeck- Gibt zurück:
- true iff local is definitely non null for this flow info
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isDefinitelyNull
Beschreibung aus Klasse kopiert:FlowInfo
Check status of definite null value for a given local variable.- Angegeben von:
isDefinitelyNull
in KlasseFlowInfo
- Parameter:
local
- the variable to ckeck- Gibt zurück:
- true iff local is definitely null for this flow info
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isDefinitelyUnknown
Beschreibung aus Klasse kopiert:FlowInfo
Check status of definite unknown value for a given local variable.- Angegeben von:
isDefinitelyUnknown
in KlasseFlowInfo
- Parameter:
local
- the variable to ckeck- Gibt zurück:
- true iff local is definitely unknown for this flow info
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hasNullInfoFor
Beschreibung aus Klasse kopiert:FlowInfo
Check if any null info has been recorded for a given local variable. Here even recording of 'UNKNOWN' is considered as null info.- Angegeben von:
hasNullInfoFor
in KlasseFlowInfo
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isPotentiallyAssigned
Beschreibung aus Klasse kopiert:FlowInfo
Check status of potential assignment for a field.- Angegeben von:
isPotentiallyAssigned
in KlasseFlowInfo
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isPotentiallyAssigned
Beschreibung aus Klasse kopiert:FlowInfo
Check status of potential assignment for a local variable.- Angegeben von:
isPotentiallyAssigned
in KlasseFlowInfo
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isPotentiallyNonNull
Beschreibung aus Klasse kopiert:FlowInfo
Check status of potential null assignment for a local. Return true if there is a reasonable expectation that the variable be non null at this point.- Angegeben von:
isPotentiallyNonNull
in KlasseFlowInfo
- Parameter:
local
- LocalVariableBinding - the binding for the checked local- Gibt zurück:
- true if there is a reasonable expectation that local be non null at this point
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isPotentiallyNull
Beschreibung aus Klasse kopiert:FlowInfo
Check status of potential null assignment for a local. Return true if there is a reasonable expectation that the variable be null at this point. This includes the protected null case, so as to augment diagnostics, but does not really check that someone deliberately assigned to null on any specific path- Angegeben von:
isPotentiallyNull
in KlasseFlowInfo
- Parameter:
local
- LocalVariableBinding - the binding for the checked local- Gibt zurück:
- true if there is a reasonable expectation that local be null at this point
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isPotentiallyUnknown
Beschreibung aus Klasse kopiert:FlowInfo
Return true if the given local may have been assigned to an unknown value.- Angegeben von:
isPotentiallyUnknown
in KlasseFlowInfo
- Parameter:
local
- the local to check- Gibt zurück:
- true if the given local may have been assigned to an unknown value
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isProtectedNonNull
Beschreibung aus Klasse kopiert:FlowInfo
Return true if the given local is protected by a test against a non null value.- Angegeben von:
isProtectedNonNull
in KlasseFlowInfo
- Parameter:
local
- the local to check- Gibt zurück:
- true if the given local is protected by a test against a non null
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isProtectedNull
Beschreibung aus Klasse kopiert:FlowInfo
Return true if the given local is protected by a test against null.- Angegeben von:
isProtectedNull
in KlasseFlowInfo
- Parameter:
local
- the local to check- Gibt zurück:
- true if the given local is protected by a test against null
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markAsComparedEqualToNonNull
Beschreibung aus Klasse kopiert:FlowInfo
Record that a local variable got checked to be non null.- Angegeben von:
markAsComparedEqualToNonNull
in KlasseFlowInfo
- Parameter:
local
- the checked local variable
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markAsComparedEqualToNull
Beschreibung aus Klasse kopiert:FlowInfo
Record that a local variable got checked to be null.- Angegeben von:
markAsComparedEqualToNull
in KlasseFlowInfo
- Parameter:
local
- the checked local variable
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markAsDefinitelyAssigned
Beschreibung aus Klasse kopiert:FlowInfo
Record a field got definitely assigned.- Angegeben von:
markAsDefinitelyAssigned
in KlasseFlowInfo
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markAsDefinitelyAssigned
Beschreibung aus Klasse kopiert:FlowInfo
Record a local got definitely assigned.- Angegeben von:
markAsDefinitelyAssigned
in KlasseFlowInfo
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markAsDefinitelyNonNull
Beschreibung aus Klasse kopiert:FlowInfo
Record a local got definitely assigned to a non-null value.- Angegeben von:
markAsDefinitelyNonNull
in KlasseFlowInfo
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markAsDefinitelyNull
Beschreibung aus Klasse kopiert:FlowInfo
Record a local got definitely assigned to null.- Angegeben von:
markAsDefinitelyNull
in KlasseFlowInfo
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resetNullInfo
Beschreibung aus Klasse kopiert:FlowInfo
Reset all null-information about a given local.- Angegeben von:
resetNullInfo
in KlasseFlowInfo
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markPotentiallyNullBit
Beschreibung aus Klasse kopiert:FlowInfo
Record a local may have got assigned to null (set the bit on existing info).- Angegeben von:
markPotentiallyNullBit
in KlasseFlowInfo
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markPotentiallyNonNullBit
Beschreibung aus Klasse kopiert:FlowInfo
Record a local may have got assigned to non-null (set the bit on existing info).- Angegeben von:
markPotentiallyNonNullBit
in KlasseFlowInfo
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markAsDefinitelyUnknown
Beschreibung aus Klasse kopiert:FlowInfo
Record a local got definitely assigned to an unknown value.- Angegeben von:
markAsDefinitelyUnknown
in KlasseFlowInfo
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markPotentiallyUnknownBit
Beschreibung aus Klasse kopiert:FlowInfo
Record a local may have got assigned to unknown (set the bit on existing info).- Angegeben von:
markPotentiallyUnknownBit
in KlasseFlowInfo
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setReachMode
Beschreibung aus Klasse kopiert:FlowInfo
Set this flow info reach mode and return this.- Angegeben von:
setReachMode
in KlasseFlowInfo
- Parameter:
reachMode
- one ofREACHABLE
,UNREACHABLE_OR_DEAD
,UNREACHABLE_BY_NULLANALYSIS
orUNREACHABLE
- Gibt zurück:
- this, with the reach mode set to reachMode
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mergedWith
Beschreibung aus Klasse kopiert:FlowInfo
Return the intersection of this and otherInits, that is one of:- the receiver updated in the following way:
- intersection of definitely assigned variables,
- union of potentially assigned variables,
- similar operations for null,
- or the receiver or otherInits if the other one is non reachable.
- Angegeben von:
mergedWith
in KlasseFlowInfo
- Parameter:
otherInits
- the flow info to merge with this- Gibt zurück:
- the intersection of this and otherInits.
- the receiver updated in the following way:
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mergeDefiniteInitsWith
- Angegeben von:
mergeDefiniteInitsWith
in KlasseFlowInfo
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nullInfoLessUnconditionalCopy
Beschreibung aus Klasse kopiert:FlowInfo
Return a copy of this unconditional flow info, deprived from its null info.DEAD_END
is returned unmodified.- Angegeben von:
nullInfoLessUnconditionalCopy
in KlasseFlowInfo
- Gibt zurück:
- a copy of this unconditional flow info deprived from its null info
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toString
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safeInitsWhenTrue
Beschreibung aus Klasse kopiert:FlowInfo
Return a flow info that carries the same information as the result ofinitsWhenTrue
, but warrantied to be different from this.
Caveat: side effects on the result may affect components of this.- Angegeben von:
safeInitsWhenTrue
in KlasseFlowInfo
- Gibt zurück:
- the result of initsWhenTrue or a copy of it
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unconditionalCopy
Beschreibung aus Klasse kopiert:FlowInfo
Return a new flow info that holds the same information as this would after a call to unconditionalInits, but leaving this info unaffected. Moreover, the result can be modified without affecting this.- Angegeben von:
unconditionalCopy
in KlasseFlowInfo
- Gibt zurück:
- a new flow info carrying this unconditional flow info
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unconditionalFieldLessCopy
Beschreibung aus Klasse kopiert:FlowInfo
Return a new flow info that holds the same information as this would after a call tounconditionalInits
followed by the erasure of fields specific information, but leaving this flow info unaffected.- Angegeben von:
unconditionalFieldLessCopy
in KlasseFlowInfo
- Gibt zurück:
- a new flow info carrying the unconditional flow info for local variables
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unconditionalInits
Beschreibung aus Klasse kopiert:FlowInfo
Return a flow info that merges the possible paths of execution described by this flow info. In case of an unconditional flow info, return this. In case of a conditional flow info, merge branches recursively. Caveat: this may be affected, and modifying the result may affect this.- Angegeben von:
unconditionalInits
in KlasseFlowInfo
- Gibt zurück:
- a flow info that merges the possible paths of execution described by this
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unconditionalInitsWithoutSideEffect
Beschreibung aus Klasse kopiert:FlowInfo
Return a new flow info that holds the same information as this would after a call tounconditionalInits
, but leaving this info unaffected. Side effects on the result might affect this though (consider it as read only).- Angegeben von:
unconditionalInitsWithoutSideEffect
in KlasseFlowInfo
- Gibt zurück:
- a flow info carrying this unconditional flow info
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resetAssignmentInfo
Beschreibung aus Klasse kopiert:FlowInfo
Resets the definite and potential initialization info for the given local variable- Angegeben von:
resetAssignmentInfo
in KlasseFlowInfo
- Parameter:
local
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