Package net.sourceforge.pmd.lang.java.ast

Class ASTUnaryExpression

  • All Implemented Interfaces:
    net.sourceforge.pmd.lang.ast.impl.GenericNode<JavaNode>, net.sourceforge.pmd.lang.ast.impl.javacc.JjtreeNode<JavaNode>, net.sourceforge.pmd.lang.ast.Node, net.sourceforge.pmd.lang.ast.TextAvailableNode, ASTExpression, ASTMemberValue, ASTSwitchArrowRHS, JavaNode, TypeNode, net.sourceforge.pmd.reporting.Reportable
    public final class ASTUnaryExpression
extends net.sourceforge.pmd.lang.ast.impl.javacc.AbstractJjtreeNode<net.sourceforge.pmd.lang.java.ast.AbstractJavaNode,​JavaNode>
    Represents a unary operation on a value. The syntactic form may be prefix or postfix, which are represented with the same nodes, even though they have different precedences. 
    
 UnaryExpression ::= PrefixExpression | PostfixExpression

 PrefixExpression  ::= PrefixOp Expression

 PostfixExpression ::= Expression PostfixOp

    • Field Summary

      Fields 
      Modifier and Type Field Description
      protected JSymbolTable symbolTable  

      • Fields inherited from class net.sourceforge.pmd.lang.ast.impl.javacc.AbstractJjtreeNode

        id

      • Fields inherited from interface net.sourceforge.pmd.lang.ast.Node

        COORDS_COMPARATOR

    • Method Summary

      All Methods Instance Methods Concrete Methods Deprecated Methods 
      Modifier and Type Method Description
      <P,​R>
      R      		 acceptVisitor​(net.sourceforge.pmd.lang.ast.AstVisitor<? super P,​? extends R> visitor, P data)  
      protected <P,​R>
      R      		 acceptVisitor​(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()
      Deprecated.
      Since 7.12.0.
      protected void enlargeLeft​(net.sourceforge.pmd.lang.ast.impl.javacc.JavaccToken child)  
      @NonNull ASTExpression.ConstResult getConstFoldingResult()
      Returns the result of constant folding on this expression.
      ASTExpression getOperand()
      Returns the expression nested within this expression.
      UnaryOp getOperator()
      Returns the constant representing the operator of this expression.
      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 compile-time type of this node.
      @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)  
      void jjtClose()  
      protected void removeChildAtIndex​(int childIndex)  
      protected void setChild​(net.sourceforge.pmd.lang.java.ast.AbstractJavaNode child, int index)  
      protected void setFirstToken​(net.sourceforge.pmd.lang.ast.impl.javacc.JavaccToken token)  
      protected void setImage​(String image)  
      protected void setLastToken​(net.sourceforge.pmd.lang.ast.impl.javacc.JavaccToken token)  

      • Methods inherited from class net.sourceforge.pmd.lang.ast.impl.javacc.AbstractJjtreeNode

        compareLocation, fitTokensToChildren, getFirstToken, getImage, getLastToken, getTextRegion, jjtOpen, toString

      • Methods inherited from class net.sourceforge.pmd.lang.ast.impl.AbstractNode

        children, firstChild, getChild, getIndexInParent, getNumChildren, getParent, getUserMap, remove, setParent

      • Methods inherited from interface net.sourceforge.pmd.lang.ast.impl.GenericNode

        ancestors, ancestorsOrSelf, asStream, children, descendants, descendantsOrSelf, getChild, getFirstChild, getLastChild, getNextSibling, getParent, getPreviousSibling

      • Methods inherited from interface net.sourceforge.pmd.lang.ast.impl.javacc.JjtreeNode

        getFirstToken, getLastToken, tokens

      • 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, isFindBoundary

      • Methods inherited from interface net.sourceforge.pmd.lang.ast.TextAvailableNode

        getOriginalText, getText, getTextRegion

    • Method Detail

      • acceptVisitor

        protected <P,​R> R acceptVisitor​(JavaVisitor<? super P,​? extends R> visitor,
                                      P data)

      • getOperand

        public ASTExpression getOperand()
        Returns the expression nested within this expression.

      • getOperator

        public UnaryOp getOperator()
        Returns the constant representing the operator of this expression.

      • 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 interface ASTExpression

      • getTypeMirror

        public @NonNull JTypeMirror getTypeMirror()
        Description copied from interface: TypeNode
        Returns the compile-time type of this node. For example, for a string literal, returns the type mirror for String, for a method call, returns the return type of the call, etc.

        This method ignores conversions applied to the value of the node because of its context. For example, in 1 + "", the numeric literal will have type int, but it is converted to String by the surrounding concatenation expression. Similarly, in Collections.singletonList(1), the ASTNumericLiteral node has type int, but the type of the method formal is Integer, and boxing is applied at runtime. Possibly, an API will be added to expose this information.

        Specified by:
        getTypeMirror in interface TypeNode
        Returns:
        The type mirror. Never returns null; if the type is unresolved, returns TypeSystem.UNKNOWN.

      • jjtClose

        public void jjtClose()
        Overrides:
        jjtClose in class net.sourceforge.pmd.lang.ast.impl.javacc.AbstractJjtreeNode<net.sourceforge.pmd.lang.java.ast.AbstractJavaNode,​JavaNode>

      • acceptVisitor

        public final <P,​R> R acceptVisitor​(net.sourceforge.pmd.lang.ast.AstVisitor<? super P,​? extends R> visitor,
                                         P data)
        Specified by:
        acceptVisitor in interface net.sourceforge.pmd.lang.ast.Node

      • addChild

        protected void addChild​(net.sourceforge.pmd.lang.java.ast.AbstractJavaNode child,
                        int index)
        Overrides:
        addChild in class net.sourceforge.pmd.lang.ast.impl.javacc.AbstractJjtreeNode<net.sourceforge.pmd.lang.java.ast.AbstractJavaNode,​JavaNode>

      • insertChild

        protected void insertChild​(net.sourceforge.pmd.lang.java.ast.AbstractJavaNode child,
                           int index)
        Overrides:
        insertChild in class net.sourceforge.pmd.lang.ast.impl.javacc.AbstractJjtreeNode<net.sourceforge.pmd.lang.java.ast.AbstractJavaNode,​JavaNode>

      • removeChildAtIndex

        protected void removeChildAtIndex​(int childIndex)
        Overrides:
        removeChildAtIndex in class net.sourceforge.pmd.lang.ast.impl.AbstractNode<net.sourceforge.pmd.lang.java.ast.AbstractJavaNode,​JavaNode>

      • setImage

        protected void setImage​(String image)
        Overrides:
        setImage in class net.sourceforge.pmd.lang.ast.impl.javacc.AbstractJjtreeNode<net.sourceforge.pmd.lang.java.ast.AbstractJavaNode,​JavaNode>

      • setFirstToken

        protected void setFirstToken​(net.sourceforge.pmd.lang.ast.impl.javacc.JavaccToken token)
        Overrides:
        setFirstToken in class net.sourceforge.pmd.lang.ast.impl.javacc.AbstractJjtreeNode<net.sourceforge.pmd.lang.java.ast.AbstractJavaNode,​JavaNode>

      • setLastToken

        protected void setLastToken​(net.sourceforge.pmd.lang.ast.impl.javacc.JavaccToken token)
        Overrides:
        setLastToken in class net.sourceforge.pmd.lang.ast.impl.javacc.AbstractJjtreeNode<net.sourceforge.pmd.lang.java.ast.AbstractJavaNode,​JavaNode>

      • enlargeLeft

        protected void enlargeLeft​(net.sourceforge.pmd.lang.ast.impl.javacc.JavaccToken child)
        Overrides:
        enlargeLeft in class net.sourceforge.pmd.lang.ast.impl.javacc.AbstractJjtreeNode<net.sourceforge.pmd.lang.java.ast.AbstractJavaNode,​JavaNode>

      • setChild

        protected void setChild​(net.sourceforge.pmd.lang.java.ast.AbstractJavaNode child,
                        int index)
        Overrides:
        setChild in class net.sourceforge.pmd.lang.ast.impl.AbstractNode<net.sourceforge.pmd.lang.java.ast.AbstractJavaNode,​JavaNode>

      • 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 interface JavaNode

      • 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 interface JavaNode

      • getRoot

        public final @NonNull ASTCompilationUnit getRoot()
        Specified by:
        getRoot in interface JavaNode
        Specified by:
        getRoot in interface net.sourceforge.pmd.lang.ast.Node

      • getXPathNodeName

        public final String getXPathNodeName()
        Specified by:
        getXPathNodeName in interface net.sourceforge.pmd.lang.ast.Node