Package com.intellij.psi.impl.source.tree.java

Class PsiLambdaExpressionImpl

java.lang.Object

com.intellij.openapi.util.UserDataHolderBase

com.intellij.psi.impl.ElementBase

com.intellij.psi.impl.PsiElementBase

com.intellij.extapi.psi.ASTDelegatePsiElement

com.intellij.extapi.psi.StubBasedPsiElementBase<T>

com.intellij.psi.impl.source.JavaStubPsiElement<FunctionalExpressionStub<PsiLambdaExpression>>

com.intellij.psi.impl.source.tree.java.PsiLambdaExpressionImpl

All Implemented Interfaces:

NavigationItem, Iconable, UserDataHolder, UserDataHolderEx, Navigatable, NavigatablePsiElement, PsiAnnotationMemberValue, PsiElement, PsiExpression, PsiFunctionalExpression, PsiLambdaExpression, PsiParameterListOwner, StubBasedPsiElement<FunctionalExpressionStub<PsiLambdaExpression>>, java.lang.Cloneable

public class PsiLambdaExpressionImpl
extends JavaStubPsiElement<FunctionalExpressionStub<PsiLambdaExpression>>
implements PsiLambdaExpression

Nested Class Summary

Nested classes/interfaces inherited from interface com.intellij.openapi.util.Iconable

Iconable.IconFlags, Iconable.LastComputedIcon

Field Summary

Fields inherited from class com.intellij.extapi.psi.StubBasedPsiElementBase

CREATION_TRACE, ourTraceStubAstBinding

Fields inherited from class com.intellij.psi.impl.ElementBase

FLAGS_LOCKED, ICON_PLACEHOLDER

Fields inherited from interface com.intellij.psi.PsiFunctionalExpression

EMPTY_ARRAY

Fields inherited from interface com.intellij.psi.PsiExpression

ARRAY_FACTORY, EXPRESSION_TO_TYPE

Fields inherited from interface com.intellij.openapi.util.Iconable

ICON_FLAG_IGNORE_MASK, ICON_FLAG_OPEN, ICON_FLAG_READ_STATUS, ICON_FLAG_VISIBILITY

Fields inherited from interface com.intellij.psi.NavigatablePsiElement

EMPTY_NAVIGATABLE_ELEMENT_ARRAY

Fields inherited from interface com.intellij.navigation.NavigationItem

EMPTY_NAVIGATION_ITEM_ARRAY

Constructor Summary

Constructors

Constructor and Description
PsiLambdaExpressionImpl(ASTNode node)
PsiLambdaExpressionImpl(FunctionalExpressionStub<PsiLambdaExpression> stub)

Method Summary

Modifier and Type	Method and Description
void	accept(PsiElementVisitor visitor) Passes the element to the specified visitor.
PsiElement	getBody() Returns PSI element representing lambda expression body: PsiCodeBlock, PsiExpression, or null if the expression is incomplete.
PsiType	getFunctionalInterfaceType()
PsiType	getGroundTargetType(PsiType functionalInterfaceType) JLS 9.9.
javax.swing.Icon	getIcon(int flags)
PsiParameterList	getParameterList() Returns this lambda expression's parameter list.
PsiType	getType() Returns the type of the expression.
boolean	hasFormalParameterTypes()
boolean	isAcceptable(PsiType leftType, PsiMethod method)
boolean	isPotentiallyCompatible(PsiType left) A lambda expression (p15.27) is potentially compatible with a functional interface type (p9.8) if all of the following are true: The arity of the target type's function type is the same as the arity of the lambda expression.
boolean	isValueCompatible()
boolean	isVoidCompatible()
boolean	processDeclarations(PsiScopeProcessor processor, ResolveState state, PsiElement lastParent, PsiElement place) Passes the declarations contained in this PSI element and its children for processing to the specified scope processor.
java.lang.String	toString() toString() should never be presented to the user.

Methods inherited from class com.intellij.psi.impl.source.JavaStubPsiElement

acceptChildren, add, addAfter, addBefore, calcTreeElement, checkAdd, clone, cloneImpl, delete, deleteChildRange, getChildren, getLanguage, getTextOffset, replace

Methods inherited from class com.intellij.extapi.psi.StubBasedPsiElementBase

getContainingFile, getContext, getElementType, getGreenStub, getManager, getNode, getParent, getParentByStub, getParentByTree, getProject, getRequiredStubOrPsiChild, getStub, getStubOrPsiChild, getStubOrPsiChildren, getStubOrPsiChildren, getStubOrPsiChildren, getStubOrPsiChildren, getStubOrPsiParentOfType, isPhysical, isValid, isWritable, setNode, setSubstrateRef

Methods inherited from class com.intellij.extapi.psi.ASTDelegatePsiElement

addInternal, addRange, addRangeAfter, addRangeBefore, checkDelete, copy, deleteChildInternal, findChildByFilter, findChildByType, findChildByType, findChildrenByType, findChildrenByType, findChildrenByType, findChildrenByType, findElementAt, findLastChildByType, findNotNullChildByType, findNotNullChildByType, getCopyableUserData, getFirstChild, getLastChild, getNextSibling, getPrevSibling, getStartOffsetInParent, getText, getTextLength, getTextRange, putCopyableUserData, replaceChildInternal, subtreeChanged, textContains, textMatches, textToCharArray

Methods inherited from class com.intellij.psi.impl.PsiElementBase

canNavigate, canNavigateToSource, findChildByClass, findChildrenByClass, findNotNullChildByClass, findReferenceAt, getName, getNavigationElement, getOriginalElement, getPresentation, getReference, getReferences, getResolveScope, getUseScope, isEquivalentTo, navigate, notNullChild, textMatches

Methods inherited from class com.intellij.psi.impl.ElementBase

buildRowIcon, computeBaseIcon, createLayeredIcon, getAdjustedBaseIcon, getBaseIcon, getElementIcon, iconWithVisibilityIfNeeded, isNativeFileType, isVisibilitySupported, overlayIcons, registerIconLayer, transformFlags

Methods inherited from class com.intellij.openapi.util.UserDataHolderBase

changeUserMap, clearUserData, copyCopyableDataTo, copyUserDataTo, getUserData, getUserDataString, getUserMap, isUserDataEmpty, putUserData, putUserDataIfAbsent, replace, setUserMap

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.intellij.psi.PsiFunctionalExpression

isAcceptable

Methods inherited from interface com.intellij.psi.PsiElement

acceptChildren, add, addAfter, addBefore, addRange, addRangeAfter, addRangeBefore, checkAdd, checkDelete, copy, delete, deleteChildRange, findElementAt, findReferenceAt, getChildren, getContainingFile, getContext, getCopyableUserData, getFirstChild, getLanguage, getLastChild, getManager, getNavigationElement, getNextSibling, getNode, getOriginalElement, getOwnReferences, getParent, getPrevSibling, getProject, getReference, getReferences, getResolveScope, getStartOffsetInParent, getText, getTextLength, getTextOffset, getTextRange, getTextRangeInParent, getUseScope, isEquivalentTo, isPhysical, isValid, isWritable, putCopyableUserData, replace, textContains, textMatches, textMatches, textToCharArray

Methods inherited from interface com.intellij.openapi.util.UserDataHolder

getUserData, putUserData

Methods inherited from interface com.intellij.navigation.NavigationItem

getName, getPresentation

Methods inherited from interface com.intellij.pom.Navigatable

canNavigate, canNavigateToSource, navigate

Methods inherited from interface com.intellij.psi.StubBasedPsiElement

getElementType, getStub

Constructor Detail

PsiLambdaExpressionImpl

public PsiLambdaExpressionImpl(FunctionalExpressionStub<PsiLambdaExpression> stub)

PsiLambdaExpressionImpl

public PsiLambdaExpressionImpl(ASTNode node)

Method Detail

getParameterList

public PsiParameterList getParameterList()

Description copied from interface: PsiLambdaExpression

Returns this lambda expression's parameter list.

Specified by:

getParameterList in interface PsiLambdaExpression

Specified by:

getParameterList in interface PsiParameterListOwner

Returns:

parameter list.

getBody

public PsiElement getBody()

Description copied from interface: PsiLambdaExpression

Returns PSI element representing lambda expression body: PsiCodeBlock, PsiExpression, or null if the expression is incomplete.

Specified by:

getBody in interface PsiLambdaExpression

Specified by:

getBody in interface PsiParameterListOwner

Returns:

lambda expression body.

getFunctionalInterfaceType

public PsiType getFunctionalInterfaceType()

Specified by:

getFunctionalInterfaceType in interface PsiFunctionalExpression

Returns:

SAM type the lambda expression corresponds to or null when no SAM type could be found

isVoidCompatible

public boolean isVoidCompatible()

Specified by:

isVoidCompatible in interface PsiLambdaExpression

isValueCompatible

public boolean isValueCompatible()

Specified by:

isValueCompatible in interface PsiLambdaExpression

getType

public PsiType getType()

Description copied from interface: PsiExpression

Returns the type of the expression.

Specified by:

getType in interface PsiExpression

Returns:

the expression type, or null if the type is not known.

accept

public void accept(PsiElementVisitor visitor)

Description copied from interface: PsiElement

Passes the element to the specified visitor.

Specified by:

accept in interface PsiElement

Overrides:

accept in class PsiElementBase

Parameters:

visitor - the visitor to pass the element to.

processDeclarations

public boolean processDeclarations(PsiScopeProcessor processor,
                                   ResolveState state,
                                   PsiElement lastParent,
                                   PsiElement place)

Description copied from interface: PsiElement

Passes the declarations contained in this PSI element and its children for processing to the specified scope processor.

Specified by:

processDeclarations in interface PsiElement

Overrides:

processDeclarations in class PsiElementBase

Parameters:

processor - the processor receiving the declarations.

lastParent - the child of this element has been processed during the previous step of the tree up walk (declarations under this element do not need to be processed again)

place - the original element from which the tree up walk was initiated.

Returns:

true if the declaration processing should continue or false if it should be stopped.

toString

public java.lang.String toString()

Description copied from interface: PsiElement

toString() should never be presented to the user.

Specified by:

toString in interface PsiElement

Overrides:

toString in class java.lang.Object

hasFormalParameterTypes

public boolean hasFormalParameterTypes()

Specified by:

hasFormalParameterTypes in interface PsiLambdaExpression

Returns:

true when lambda declares parameter types explicitly

isAcceptable

public boolean isAcceptable(PsiType leftType,
                            PsiMethod method)

Specified by:

isAcceptable in interface PsiFunctionalExpression

Returns:

true if assignment SAM s = expr is correctly shaped

isPotentiallyCompatible

public boolean isPotentiallyCompatible(PsiType left)

Description copied from interface: PsiLambdaExpression

A lambda expression (p15.27) is potentially compatible with a functional interface type (p9.8) if all of the following are true: The arity of the target type's function type is the same as the arity of the lambda expression. If the target type's function type has a void return, then the lambda body is either a statement expression (p14.8) or a void-compatible block (p15.27.2). If the target type's function type has a (non-void) return type, then the lambda body is either an expression or a value-compatible block (p15.27.2).

Specified by:

isPotentiallyCompatible in interface PsiFunctionalExpression

Specified by:

isPotentiallyCompatible in interface PsiLambdaExpression

getGroundTargetType

public PsiType getGroundTargetType(PsiType functionalInterfaceType)

Description copied from interface: PsiFunctionalExpression

JLS 9.9. Function Types: When a generic functional interface is parameterized by wildcards, there are many different instantiations that could satisfy the wildcard and produce different function types. Sometimes, it is possible to known from the context, such as the parameter types of a lambda expression, which function type is intended (15.27.3). Other times, it is necessary to pick one; in these circumstances, the bounds are used.

Specified by:

getGroundTargetType in interface PsiFunctionalExpression

getIcon

public javax.swing.Icon getIcon(int flags)

Specified by:

getIcon in interface Iconable

Overrides:

getIcon in class ElementBase