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

void addDeclaredType(String type)

Adds new inner type.

Parameters:

type - the type name

addReferencedType

void addReferencedType(String type)

Adds new type reference to the current frame.

Parameters:

type - the type name

addReferencedTypes

void addReferencedTypes(Collection<String> types)

Adds new inner types.

Parameters:

types - the type names

finish

void finish()

Filters out all references to locally defined types.

push

UnusedImportsCheck.Frame push()

Creates new inner frame.

Returns:

a new frame.

pop

UnusedImportsCheck.Frame pop()

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

Returns:

the parent frame

isReferencedType

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

static UnusedImportsCheck.Frame compilationUnit()

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

Returns:

a new frame.