Class ASTLambdaExpression
- 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.ASTLambdaExpression
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- All Implemented Interfaces:
GenericNode<JavaNode>
,JjtreeNode<JavaNode>
,Node
,TextAvailableNode
,ASTExpression
,ASTMemberValue
,ASTSwitchArrowRHS
,FunctionalExpression
,JavaNode
,TypeNode
,Reportable
public final class ASTLambdaExpression extends AbstractJjtreeNode<net.sourceforge.pmd.lang.java.ast.AbstractJavaNode,JavaNode> implements FunctionalExpression
A lambda expression.LambdaExpression ::=
LambdaParameterList
"->"
(Expression
|Block
)
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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()
int
getArity()
Returns the number of formal parameters of this lambda.@Nullable ASTBlock
getBlock()
Deprecated.UsegetBlockBody()
@Nullable ASTBlock
getBlockBody()
Returns the body of this lambda if it is a block.@Nullable Object
getConstValue()
Returns the constant value of this node, if this is a constant expression.@Nullable ASTExpression
getExpression()
Deprecated.@Nullable ASTExpression
getExpressionBody()
Returns the body of this lambda if it is an expression.JMethodSig
getFunctionalMethod()
Returns the method that is overridden in the functional interface.ASTLambdaParameterList
getParameters()
int
getParenthesisDepth()
Returns the number of parenthesis levels around this expression.@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
isBlockBody()
Returns true if this lambda has a block for body.boolean
isExplicitlyTyped()
Return true if this lambda is explicitly typed, meaning all parameters have an explicit type.boolean
isExpressionBody()
Returns true if this lambda has an expression for body.boolean
isFindBoundary()
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, getImage, 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, getParent, getPreviousSibling
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Methods inherited from interface net.sourceforge.pmd.lang.java.ast.JavaNode
getEnclosingType, getRoot, getSymbolTable, getTypeSystem
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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, firstChild, getAstInfo, getBeginColumn, getBeginLine, getEndColumn, getEndLine, getImage, getIndexInParent, getLanguageVersion, getNumChildren, getReportLocation, getTextDocument, getUserMap, getXPathAttributesIterator, getXPathNodeName, hasImageEqualTo
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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
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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getTypeMirror
public @NonNull JTypeMirror getTypeMirror()
Returns the type of the functional interface. E.g. instringStream.map(s -> s.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()
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getFunctionalMethod
public JMethodSig getFunctionalMethod()
Returns the method that is overridden in the functional interface. E.g. instringStream.map(s -> s.isEmpty())
, this isjava.util.function.Function#apply(java.lang.String) -> java.lang.Boolean
- Specified by:
getFunctionalMethod
in interfaceFunctionalExpression
- See Also:
getTypeMirror()
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getParameters
public ASTLambdaParameterList getParameters()
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isExplicitlyTyped
public boolean isExplicitlyTyped()
Return true if this lambda is explicitly typed, meaning all parameters have an explicit type. Note that lambdas with zero parameters are explicitly typed.
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isBlockBody
public boolean isBlockBody()
Returns true if this lambda has a block for body.
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isExpressionBody
public boolean isExpressionBody()
Returns true if this lambda has an expression for body.
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getBlock
@Deprecated public @Nullable ASTBlock getBlock()
Deprecated.UsegetBlockBody()
Returns the body of this expression, if it is a block.
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getExpression
@Deprecated public @Nullable ASTExpression getExpression()
Deprecated.Returns the body of this expression, if it is an expression.
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getBlockBody
public @Nullable ASTBlock getBlockBody()
Returns the body of this lambda if it is a block.
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getExpressionBody
public @Nullable ASTExpression getExpressionBody()
Returns the body of this lambda if it is an expression.
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isFindBoundary
public boolean isFindBoundary()
- Specified by:
isFindBoundary
in interfaceNode
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getArity
public int getArity()
Returns the number of formal parameters of this lambda.
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acceptVisitor
protected <P,R> R acceptVisitor(JavaVisitor<? super P,? extends R> visitor, P data)
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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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jjtClose
public void jjtClose()
- Overrides:
jjtClose
in classAbstractJjtreeNode<net.sourceforge.pmd.lang.java.ast.AbstractJavaNode,JavaNode>
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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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