Class ChildMultiMatcher<T extends Tree, N extends Tree>

java.lang.Object

com.google.errorprone.matchers.ChildMultiMatcher<T,N>

Type Parameters:

T - the type of the node to match on

N - the type of the subnode that the given matcher should match

All Implemented Interfaces:

Matcher<T>, MultiMatcher<T,N>, Serializable

Direct Known Subclasses:

AnnotationMatcher, ConstructorOfClass, HasArguments, MethodHasParameters

public abstract class ChildMultiMatcher<T extends Tree, N extends Tree>
extends Object
implements MultiMatcher<T,N>

A MultiMatcher that applies a matcher across multiple children of a single ancestor node. Configurable to return true if any of, all of, or the last node matches. In the any or last of cases, provides access to the node that matched.

Author:

eaftan@google.com (Eddie Aftandilian)

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	ChildMultiMatcher.MatchType

Nested classes/interfaces inherited from interface MultiMatcher

MultiMatcher.MultiMatchResult<N>

Field Summary

Fields

Modifier and Type	Field	Description
protected final Matcher<N>	nodeMatcher	The matcher to apply to the subnodes in question.

Constructor Summary

Constructors

Constructor	Description
ChildMultiMatcher(ChildMultiMatcher.MatchType matchType, Matcher<N> nodeMatcher)

Method Summary

Modifier and Type	Method	Description
protected abstract Iterable<? extends N>	getChildNodes(T tree, VisitorState state)	Returns the set of child nodes to match.
boolean	matches(T tree, VisitorState state)
MultiMatcher.MultiMatchResult<N>	multiMatchResult(T tree, VisitorState state)	Attempt to match the given node, and return the associated subnodes that matched.

Methods inherited from class Object

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

Field Details

nodeMatcher

protected final Matcher<N extends Tree> nodeMatcher

The matcher to apply to the subnodes in question.

Constructor Details

ChildMultiMatcher

public ChildMultiMatcher(ChildMultiMatcher.MatchType matchType,
 Matcher<N> nodeMatcher)

Method Details

matches

public boolean matches(T tree,
 VisitorState state)

Specified by:

matches in interface Matcher<T extends Tree>

multiMatchResult

public MultiMatcher.MultiMatchResult<N> multiMatchResult(T tree,
 VisitorState state)

Description copied from interface: MultiMatcher

Attempt to match the given node, and return the associated subnodes that matched.

Specified by:

multiMatchResult in interface MultiMatcher<T extends Tree, N extends Tree>

getChildNodes

@ForOverride
protected abstract Iterable<? extends N> getChildNodes(T tree,
 VisitorState state)

Returns the set of child nodes to match. The nodes must be immediate children of the current node to ensure the TreePath calculation is correct. MultiMatchers with other requirements should not subclass ChildMultiMatcher.