Class ASTMethodReference
- java.lang.Object
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- net.sourceforge.pmd.lang.ast.impl.AbstractNode<B,N>
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- net.sourceforge.pmd.lang.ast.impl.javacc.AbstractJjtreeNode<net.sourceforge.pmd.lang.java.ast.AbstractJavaNode,JavaNode>
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- net.sourceforge.pmd.lang.java.ast.ASTMethodReference
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- All Implemented Interfaces:
GenericNode<JavaNode>
,JjtreeNode<JavaNode>
,Node
,TextAvailableNode
,ASTExpression
,ASTMemberValue
,ASTPrimaryExpression
,ASTSwitchArrowRHS
,FunctionalExpression
,JavaNode
,MethodUsage
,QualifiableExpression
,TypeNode
,Reportable
public final class ASTMethodReference extends AbstractJjtreeNode<net.sourceforge.pmd.lang.java.ast.AbstractJavaNode,JavaNode> implements ASTPrimaryExpression, QualifiableExpression, MethodUsage, FunctionalExpression
Method or constructor reference expression.MethodReference ::=
Expression
"::"TypeArguments
? <IDENTIFIER> |TypeExpression
"::"TypeArguments
? "new"
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Field Summary
Fields Modifier and Type Field Description protected JSymbolTable
symbolTable
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Fields inherited from class net.sourceforge.pmd.lang.ast.impl.javacc.AbstractJjtreeNode
id
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Fields inherited from interface net.sourceforge.pmd.lang.ast.Node
COORDS_COMPARATOR
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Method Summary
All Methods Instance Methods Concrete Methods Deprecated Methods Modifier and Type Method Description <P,R>
RacceptVisitor(AstVisitor<? super P,? extends R> visitor, P data)
protected <P,R>
RacceptVisitor(JavaVisitor<? super P,? extends R> visitor, P data)
protected void
addChild(net.sourceforge.pmd.lang.java.ast.AbstractJavaNode child, int index)
protected @Nullable Object
buildConstValue()
@Nullable Object
getConstValue()
Returns the constant value of this node, if this is a constant expression.@Nullable ASTTypeArguments
getExplicitTypeArguments()
Returns the explicit type arguments mentioned after the "::" if they exist.JMethodSig
getFunctionalMethod()
Returns the method that is overridden in the functional interface.@Nullable String
getImage()
Deprecated.TypeNode
getLhs()
Returns the LHS, whether it is a type or an expression.@NonNull String
getMethodName()
Returns the method name, or anJConstructorSymbol.CTOR_NAME
if this is a constructor reference.int
getParenthesisDepth()
Returns the number of parenthesis levels around this expression.@NonNull ASTExpression
getQualifier()
Returns the node to the left of the "::".JMethodSig
getReferencedMethod()
Returns the method that is referenced.@NonNull ASTCompilationUnit
getRoot()
@NonNull JSymbolTable
getSymbolTable()
Returns the symbol table for the program point represented by this node.@NonNull JTypeMirror
getTypeMirror()
Returns the type of the functional interface.@NonNull JTypeMirror
getTypeMirror(TypingContext context)
TypeSystem
getTypeSystem()
Returns the type system with which this node was created.String
getXPathNodeName()
protected void
insertChild(net.sourceforge.pmd.lang.java.ast.AbstractJavaNode child, int index)
boolean
isConstructorReference()
Returns true if this is a constructor reference, e.g.void
jjtClose()
protected void
removeChildAtIndex(int childIndex)
protected void
setChild(net.sourceforge.pmd.lang.java.ast.AbstractJavaNode child, int index)
protected void
setFirstToken(JavaccToken token)
protected void
setImage(String image)
protected void
setLastToken(JavaccToken token)
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Methods inherited from class net.sourceforge.pmd.lang.ast.impl.javacc.AbstractJjtreeNode
compareLocation, fitTokensToChildren, getFirstToken, getLastToken, getTextRegion, jjtOpen, toString
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Methods inherited from class net.sourceforge.pmd.lang.ast.impl.AbstractNode
children, firstChild, getChild, getIndexInParent, getNumChildren, getParent, getUserMap, remove, setParent
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
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Methods inherited from interface net.sourceforge.pmd.lang.java.ast.ASTExpression
getConstValue, getConversionContext, getParenthesisDepth, isCompileTimeConstant, isExpression, isParenthesized
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Methods inherited from interface net.sourceforge.pmd.lang.ast.impl.GenericNode
ancestors, ancestorsOrSelf, asStream, children, descendants, descendantsOrSelf, getChild, getFirstChild, getLastChild, getNextSibling, getNthParent, getParent, getPreviousSibling
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Methods inherited from interface net.sourceforge.pmd.lang.java.ast.JavaNode
getEnclosingType, getRoot, getSymbolTable, getTypeSystem, jjtAccept
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Methods inherited from interface net.sourceforge.pmd.lang.ast.impl.javacc.JjtreeNode
getFirstToken, getLastToken, tokens
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Methods inherited from interface net.sourceforge.pmd.lang.ast.Node
acceptVisitor, ancestors, children, compareLocation, descendants, findChildNodesWithXPath, findChildrenOfType, findDescendantsOfType, findDescendantsOfType, firstChild, getAstInfo, getBeginColumn, getBeginLine, getEndColumn, getEndLine, getFirstChildOfType, getFirstDescendantOfType, getFirstParentOfType, getIndexInParent, getLanguageVersion, getNumChildren, getParentsOfType, getReportLocation, getTextDocument, getUserMap, getXPathAttributesIterator, getXPathNodeName, hasDescendantOfType, hasImageEqualTo, isFindBoundary
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Methods inherited from interface net.sourceforge.pmd.lang.ast.TextAvailableNode
getOriginalText, getText, getTextRegion
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Methods inherited from interface net.sourceforge.pmd.lang.java.ast.TypeNode
getType, getTypeMirror
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Field Detail
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symbolTable
protected JSymbolTable symbolTable
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Method Detail
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jjtClose
public void jjtClose()
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getLhs
public TypeNode getLhs()
Returns the LHS, whether it is a type or an expression. Returns null if this is an unqualified method call.
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isConstructorReference
public boolean isConstructorReference()
Returns true if this is a constructor reference, e.g.ArrayList::new
.
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getQualifier
public @NonNull ASTExpression getQualifier()
Returns the node to the left of the "::". This may be atype expression
, or anambiguous name
.Note that if this is a constructor reference, then this can only return a type expression.
- Specified by:
getQualifier
in interfaceQualifiableExpression
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getExplicitTypeArguments
public @Nullable ASTTypeArguments getExplicitTypeArguments()
Returns the explicit type arguments mentioned after the "::" if they exist. Type arguments mentioned before the "::", if any, are contained within the lhs type.
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getMethodName
public @NonNull String getMethodName()
Returns the method name, or anJConstructorSymbol.CTOR_NAME
if this is a constructor reference.- Specified by:
getMethodName
in interfaceMethodUsage
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getImage
@Deprecated public @Nullable String getImage()
Deprecated.- Specified by:
getImage
in interfaceNode
- Overrides:
getImage
in classAbstractJjtreeNode<net.sourceforge.pmd.lang.java.ast.AbstractJavaNode,JavaNode>
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acceptVisitor
protected <P,R> R acceptVisitor(JavaVisitor<? super P,? extends R> visitor, P data)
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getTypeMirror
public @NonNull JTypeMirror getTypeMirror()
Returns the type of the functional interface. E.g. instringStream.map(String::isEmpty)
, this isjava.util.function.Function<java.lang.String, java.lang.Boolean>
.- Specified by:
getTypeMirror
in interfaceFunctionalExpression
- Specified by:
getTypeMirror
in interfaceTypeNode
- Returns:
- The type mirror. Never returns null; if the type is unresolved, returns
TypeSystem.UNKNOWN
. - See Also:
getFunctionalMethod()
,getReferencedMethod()
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getFunctionalMethod
public JMethodSig getFunctionalMethod()
Returns the method that is overridden in the functional interface. E.g. instringStream.map(String::isEmpty)
, this isjava.util.function.Function#apply(java.lang.String) -> java.lang.Boolean
- Specified by:
getFunctionalMethod
in interfaceFunctionalExpression
- See Also:
getReferencedMethod()
,getTypeMirror()
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getReferencedMethod
public JMethodSig getReferencedMethod()
Returns the method that is referenced. E.g. instringStream.map(String::isEmpty)
, this isjava.lang.String.isEmpty() -> boolean
.This is called the compile-time declaration of the method reference in the JLS.
If no such method can be found, returns
TypeSystem.UNRESOLVED_METHOD
.- See Also:
getFunctionalMethod()
,getTypeMirror()
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getParenthesisDepth
public int getParenthesisDepth()
Description copied from interface:ASTExpression
Returns the number of parenthesis levels around this expression. If this method returns 0, then no parentheses are present.E.g. the expression
(a + b)
is parsed as an AdditiveExpression whose parenthesisDepth is 1, and in((a + b))
it's 2.This is to avoid the parentheses interfering with analysis. Parentheses already influence parsing by breaking the natural precedence of operators. It would mostly hide false positives to make a ParenthesizedExpr node, because it would make semantically equivalent nodes have a very different representation.
On the other hand, when a rule explicitly cares about parentheses, then this attribute may be used to find out whether parentheses were mentioned, so no information is lost.
- Specified by:
getParenthesisDepth
in interfaceASTExpression
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getConstValue
public @Nullable Object getConstValue()
Description copied from interface:ASTMemberValue
Returns the constant value of this node, if this is a constant expression. Otherwise, or if some references couldn't be resolved, returns null. Note thatnull
is not a constant value, so this method's returning null is not a problem. Note that annotations are not given a constant value by this implementation.- Specified by:
getConstValue
in interfaceASTExpression
- Specified by:
getConstValue
in interfaceASTMemberValue
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buildConstValue
protected @Nullable Object buildConstValue()
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getTypeMirror
public @NonNull JTypeMirror getTypeMirror(TypingContext context)
- Specified by:
getTypeMirror
in interfaceTypeNode
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acceptVisitor
public final <P,R> R acceptVisitor(AstVisitor<? super P,? extends R> visitor, P data)
- Specified by:
acceptVisitor
in interfaceNode
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addChild
protected void addChild(net.sourceforge.pmd.lang.java.ast.AbstractJavaNode child, int index)
- Overrides:
addChild
in classAbstractJjtreeNode<net.sourceforge.pmd.lang.java.ast.AbstractJavaNode,JavaNode>
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insertChild
protected void insertChild(net.sourceforge.pmd.lang.java.ast.AbstractJavaNode child, int index)
- Overrides:
insertChild
in classAbstractJjtreeNode<net.sourceforge.pmd.lang.java.ast.AbstractJavaNode,JavaNode>
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removeChildAtIndex
protected void removeChildAtIndex(int childIndex)
- Overrides:
removeChildAtIndex
in classAbstractNode<net.sourceforge.pmd.lang.java.ast.AbstractJavaNode,JavaNode>
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setImage
protected void setImage(String image)
- Overrides:
setImage
in classAbstractJjtreeNode<net.sourceforge.pmd.lang.java.ast.AbstractJavaNode,JavaNode>
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setFirstToken
protected void setFirstToken(JavaccToken token)
- Overrides:
setFirstToken
in classAbstractJjtreeNode<net.sourceforge.pmd.lang.java.ast.AbstractJavaNode,JavaNode>
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setLastToken
protected void setLastToken(JavaccToken token)
- Overrides:
setLastToken
in classAbstractJjtreeNode<net.sourceforge.pmd.lang.java.ast.AbstractJavaNode,JavaNode>
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setChild
protected void setChild(net.sourceforge.pmd.lang.java.ast.AbstractJavaNode child, int index)
- Overrides:
setChild
in classAbstractNode<net.sourceforge.pmd.lang.java.ast.AbstractJavaNode,JavaNode>
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getSymbolTable
public @NonNull JSymbolTable getSymbolTable()
Description copied from interface:JavaNode
Returns the symbol table for the program point represented by this node.- Specified by:
getSymbolTable
in interfaceJavaNode
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getTypeSystem
public TypeSystem getTypeSystem()
Description copied from interface:JavaNode
Returns the type system with which this node was created. This is the object responsible for representing types in the compilation unit.- Specified by:
getTypeSystem
in interfaceJavaNode
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getRoot
public final @NonNull ASTCompilationUnit getRoot()
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getXPathNodeName
public final String getXPathNodeName()
- Specified by:
getXPathNodeName
in interfaceNode
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