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public interface Scope
A scope is a region within variables and other declarations are visible. Scopes can be nested and form a tree. This is expressed through "parent scopes". Each scope manages its own declarations.
AbstractScope as a base class
,
Java Language Specification, 6.3: Scope of a DeclarationMethod Summary | ||
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void |
addDeclaration(NameDeclaration declaration)
Adds a new declaration to this scope. |
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NameDeclaration |
addNameOccurrence(NameOccurrence occurrence)
Adds a NameOccurrence to this scope - only call this after getting
a true back from contains(NameOccurrence) . |
|
boolean |
contains(NameOccurrence occ)
Tests whether or not a NameOccurrence is directly contained in the scope. |
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Map<NameDeclaration,List<NameOccurrence>> |
getDeclarations()
Gets all the declaration with the occurrences in this scope. |
|
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getDeclarations(Class<T> clazz)
Helper method to get only a specific type of name declarations. |
|
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getEnclosingScope(Class<T> clazz)
Helper method that goes up the parent scopes to find a scope of the specified type |
|
Scope |
getParent()
Retrieves this scope's parent |
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void |
setParent(Scope parent)
Points this scope to its parent |
Method Detail |
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Scope getParent()
void setParent(Scope parent)
<T extends Scope> T getEnclosingScope(Class<T> clazz)
clazz
- the type of the Scope to search for
null
if no
such scope was found.Map<NameDeclaration,List<NameOccurrence>> getDeclarations()
<T extends NameDeclaration> Map<T,List<NameOccurrence>> getDeclarations(Class<T> clazz)
getDeclarations()
.
clazz
- the type of name declarations to use
boolean contains(NameOccurrence occ)
NameOccurrence
is directly contained in the scope.
This means, whether the given NameOccurrence
references a declaration, that has been
declared within this scope.
Note that this search is just for this scope - it doesn't go diving into any
parent scopes.
void addDeclaration(NameDeclaration declaration)
contains(NameOccurrence)
and addNameOccurrence(NameOccurrence)
can
be used correctly.
declaration
- the declaration to addNameDeclaration addNameOccurrence(NameOccurrence occurrence)
NameOccurrence
to this scope - only call this after getting
a true back from contains(NameOccurrence)
.
NameDeclaration
that is references by the given NameOccurrence
,
if the NameOccurrence
could be added. Otherwise null
is returned.
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