public class UnknownLabel_c extends Label_c implements UnknownLabel
UnknownLabel
interface.description, toJava, variables
Constructor and Description |
---|
UnknownLabel_c(JifTypeSystem ts,
polyglot.util.Position pos) |
Modifier and Type | Method and Description |
---|---|
java.lang.String |
componentString(java.util.Set<Label> printedLabels)
return a string s such that {s} is a label
|
boolean |
equalsImpl(polyglot.types.TypeObject o) |
int |
hashCode() |
boolean |
isCanonical() |
boolean |
isComparable()
Is this label comparable to other labels?
|
boolean |
isCovariant()
Is this label covariant?
|
boolean |
isDisambiguatedImpl()
Check if the label is disambiguated, without recursing into child labels.
|
boolean |
isEnumerable()
Are the components of this label enumerable?
|
boolean |
isRuntimeRepresentable() |
boolean |
leq_(Label L,
LabelEnv env,
LabelEnv.SearchState state)
Implementation of leq, should only be called by JifTypeSystem
|
java.lang.String |
toString()
Equivalent to toString(emptySet).
|
java.util.Set<Variable> |
variables()
The set of variables that this label contains including variables contained
in upper bounds of arg labels.
|
componentString, confProjection, copy, description, hasVariableComponents, hasVariables, hasWritersToReaders, integProjection, isBottom, isDisambiguated, isInvariant, isTop, labelCheck, normalize, setDescription, simplify, simplifyImpl, subst, throwTypes, toJava, toJava, toString, variableComponents
typeSystem
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
componentString, confProjection, copy, description, hasVariableComponents, hasVariables, hasWritersToReaders, integProjection, isBottom, isDisambiguated, isInvariant, isTop, labelCheck, normalize, setDescription, simplify, subst, throwTypes, toJava, toString, variableComponents
toJava
typeSystem
public UnknownLabel_c(JifTypeSystem ts, polyglot.util.Position pos)
public boolean isComparable()
Label
For example, an UnknownLabel is not comparable to others, neither is a VarLabel. Most other labels are.
isComparable
in interface Label
public boolean isEnumerable()
Label
For example, Singletons are enumerable, JoinLabels are enumerable, RuntimeLabel (the label of all runtime representable components) is not enumerable. NOTE: The components of a label are not neccessarily stuck together with a join operation. For example, the MeetLabel uses the meet operation between its components.
isEnumerable
in interface Label
public boolean isCanonical()
isCanonical
in interface Param
isCanonical
in interface polyglot.types.TypeObject
public boolean isDisambiguatedImpl()
Label_c
isDisambiguatedImpl
in class Label_c
public boolean isCovariant()
Label
isCovariant
in interface Label
public boolean isRuntimeRepresentable()
isRuntimeRepresentable
in interface Label
isRuntimeRepresentable
in interface Param
public java.lang.String componentString(java.util.Set<Label> printedLabels)
Label
componentString
in interface Label
componentString
in class Label_c
printedLabels
- the set of labels for which auxiliary information should be
omitted.public java.lang.String toString()
Label
public boolean equalsImpl(polyglot.types.TypeObject o)
equalsImpl
in interface polyglot.types.TypeObject
equalsImpl
in class Label_c
public int hashCode()
hashCode
in class polyglot.types.TypeObject_c
public boolean leq_(Label L, LabelEnv env, LabelEnv.SearchState state)
Label