Package com.github.javaparser.printer.lexicalpreservation

Class LexicalPreservingPrinter.Observer

java.lang.Object

com.github.javaparser.ast.observer.PropagatingAstObserver

com.github.javaparser.printer.lexicalpreservation.LexicalPreservingPrinter.Observer

All Implemented Interfaces:

AstObserver

Enclosing class:

LexicalPreservingPrinter

private static class LexicalPreservingPrinter.Observer
extends PropagatingAstObserver

Nested Class Summary

Nested classes/interfaces inherited from interface com.github.javaparser.ast.observer.AstObserver

AstObserver.ListChangeType

Constructor Summary

Constructors

Modifier	Constructor	Description
private	Observer()

Method Summary

Modifier and Type	Method	Description
void	concreteListChange(NodeList<?> changedList, AstObserver.ListChangeType type, int index, Node nodeAddedOrRemoved)
void	concreteListReplacement(NodeList<?> changedList, int index, Node oldValue, Node newValue)
void	concretePropertyChange(Node observedNode, ObservableProperty property, java.lang.Object oldValue, java.lang.Object newValue)
private java.util.List<TokenTextElement>	convertMarkdownCommentContentToTokens(MarkdownComment comment)	Comments must be converted to TokenTextElements that the LPP can work with.
private java.util.List<ChildTextElement>	findChildTextElementForComment(Comment oldValue, NodeText nodeText)
private java.util.List<TokenTextElement>	findTokenTextElementForComment(Comment oldValue, NodeText nodeText)
private void	fixIndentOfAddedNode(NodeText nodeText, int index)	This method inserts new space tokens at the given index.
private Pair<java.lang.Integer,java.lang.Integer>	getIndexAndCountOfCommentTokens(Comment oldValue, NodeText nodeText)
private boolean	isCompleteLine(java.util.List<TextElement> elements, int index)
private boolean	isSameComment(Comment childValue, Comment oldValue)
private java.util.List<TokenTextElement>	makeCommentTokens(Comment newComment)
private void	removeAllExtraCharacters(java.util.List<TextElement> elements, int index)
private void	removeAllExtraCharactersBeforePosition(java.util.ListIterator<TextElement> iterator)
private void	removeAllExtraCharactersStartingFrom(java.util.ListIterator<TextElement> iterator)
private java.util.List<ChildTextElement>	selectMatchingChildElements(Comment oldValue, NodeText nodeText)

Methods inherited from class com.github.javaparser.ast.observer.PropagatingAstObserver

listChange, listReplacement, parentChange, propertyChange, transformInPropagatingObserver

Methods inherited from class java.lang.Object

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

Constructor Detail

Observer

private Observer()

Method Detail

concretePropertyChange

public void concretePropertyChange(Node observedNode,
                                   ObservableProperty property,
                                   java.lang.Object oldValue,
                                   java.lang.Object newValue)

Overrides:

concretePropertyChange in class PropagatingAstObserver

isCompleteLine

private boolean isCompleteLine(java.util.List<TextElement> elements,
                               int index)

removeAllExtraCharacters

private void removeAllExtraCharacters(java.util.List<TextElement> elements,
                                      int index)

removeAllExtraCharactersBeforePosition

private void removeAllExtraCharactersBeforePosition(java.util.ListIterator<TextElement> iterator)

removeAllExtraCharactersStartingFrom

private void removeAllExtraCharactersStartingFrom(java.util.ListIterator<TextElement> iterator)

convertMarkdownCommentContentToTokens

private java.util.List<TokenTextElement> convertMarkdownCommentContentToTokens(MarkdownComment comment)

Comments must be converted to TokenTextElements that the LPP can work with. For the other comments this is simple since there is a TokenType corresponding to them. A TokenTextElement can just be created from the header, footer, and content of the comment. This is not the case for MarkdownComments, however, since a MarkdownComment is made up of a sequence of whitespace and line comment tokens. This sequence is therefore manually reconstructed from the comment content.

makeCommentTokens

private java.util.List<TokenTextElement> makeCommentTokens(Comment newComment)

getIndexAndCountOfCommentTokens

private Pair<java.lang.Integer,java.lang.Integer> getIndexAndCountOfCommentTokens(Comment oldValue,
                                                                                        NodeText nodeText)

findChildTextElementForComment

private java.util.List<ChildTextElement> findChildTextElementForComment(Comment oldValue,
                                                                        NodeText nodeText)

selectMatchingChildElements

private java.util.List<ChildTextElement> selectMatchingChildElements(Comment oldValue,
                                                                     NodeText nodeText)

isSameComment

private boolean isSameComment(Comment childValue,
                              Comment oldValue)

findTokenTextElementForComment

private java.util.List<TokenTextElement> findTokenTextElementForComment(Comment oldValue,
                                                                        NodeText nodeText)

fixIndentOfAddedNode

private void fixIndentOfAddedNode(NodeText nodeText,
                                  int index)

This method inserts new space tokens at the given index. If a new comment is added to the token list at the position following index, the new comment and the node will have the same indent.

Parameters:

nodeText - The text of the node

index - The position at which the analysis should start

concreteListChange

public void concreteListChange(NodeList<?> changedList,
                               AstObserver.ListChangeType type,
                               int index,
                               Node nodeAddedOrRemoved)

Overrides:

concreteListChange in class PropagatingAstObserver

concreteListReplacement

public void concreteListReplacement(NodeList<?> changedList,
                                    int index,
                                    Node oldValue,
                                    Node newValue)

Overrides:

concreteListReplacement in class PropagatingAstObserver