Package com.puppycrawl.tools.checkstyle.checks.imports

Class UnusedImportsCheck.Frame

java.lang.Object

com.puppycrawl.tools.checkstyle.checks.imports.UnusedImportsCheck.Frame

Enclosing class:

UnusedImportsCheck

private static final class UnusedImportsCheck.Frame
extends Object

Holds the names of referenced types and names of declared inner types.

Field Summary

Fields

Modifier and Type	Field	Description
private final Set<String>	declaredTypes	Nested types declared in the current scope.
private final UnusedImportsCheck.Frame	parent	Parent frame.
private final Set<String>	referencedTypes	Set of references - possibly to imports or locally declared types.

Constructor Summary

Constructors

Modifier	Constructor	Description
private	Frame(UnusedImportsCheck.Frame parent)	Private constructor.

Method Summary

Modifier and Type	Method	Description
void	addDeclaredType(String type)	Adds new inner type.
void	addReferencedType(String type)	Adds new type reference to the current frame.
void	addReferencedTypes(Collection<String> types)	Adds new inner types.
static UnusedImportsCheck.Frame	compilationUnit()	Creates a new top-level frame for the compilation unit.
void	finish()	Filters out all references to locally defined types.
boolean	isReferencedType(String type)	Checks whether this type name is used in this frame.
UnusedImportsCheck.Frame	pop()	Pulls all referenced types up, except those that are declared in this scope.
UnusedImportsCheck.Frame	push()	Creates new inner frame.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

parent

private final UnusedImportsCheck.Frame parent

Parent frame.

declaredTypes

private final Set<String> declaredTypes

Nested types declared in the current scope.

referencedTypes

private final Set<String> referencedTypes

Set of references - possibly to imports or locally declared types.

Constructor Details

Frame

private Frame(UnusedImportsCheck.Frame parent)

Private constructor. Use compilationUnit() to create a new top-level frame.

Parameters:

parent - the parent frame

Method Details

addDeclaredType

public void addDeclaredType(String type)

Adds new inner type.

Parameters:

type - the type name

addReferencedType

public void addReferencedType(String type)

Adds new type reference to the current frame.

Parameters:

type - the type name

addReferencedTypes

public void addReferencedTypes(Collection<String> types)

Adds new inner types.

Parameters:

types - the type names

finish

public void finish()

Filters out all references to locally defined types.

push

public UnusedImportsCheck.Frame push()

Creates new inner frame.

Returns:

a new frame.

pop

public UnusedImportsCheck.Frame pop()

Pulls all referenced types up, except those that are declared in this scope.

Returns:

the parent frame

isReferencedType

public boolean isReferencedType(String type)

Checks whether this type name is used in this frame.

Parameters:

type - the type name

Returns:

true if the type is used

compilationUnit

public static UnusedImportsCheck.Frame compilationUnit()

Creates a new top-level frame for the compilation unit.

Returns:

a new frame.