forked from checkstyle/checkstyle
/
CodeSelectorPresentation.java
154 lines (137 loc) · 5.09 KB
/
CodeSelectorPresentation.java
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////////////////////////////////////////////////////////////////////////////////
// checkstyle: Checks Java source code for adherence to a set of rules.
// Copyright (C) 2001-2020 the original author or authors.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
////////////////////////////////////////////////////////////////////////////////
package com.puppycrawl.tools.checkstyle.gui;
import java.util.List;
import com.puppycrawl.tools.checkstyle.api.DetailAST;
import com.puppycrawl.tools.checkstyle.api.DetailNode;
import com.puppycrawl.tools.checkstyle.utils.TokenUtil;
/**
* Presentation model for CodeSelector.
*/
public class CodeSelectorPresentation {
/** DetailAST or DetailNode node. */
private final Object node;
/** Mapping. */
private final List<Integer> lines2position;
/** Selection start position. */
private int selectionStart;
/** Selection end position. */
private int selectionEnd;
/**
* Constructor.
* @param ast ast node.
* @param lines2position list to map lines.
* @noinspection AssignmentOrReturnOfFieldWithMutableType
*/
public CodeSelectorPresentation(DetailAST ast, List<Integer> lines2position) {
node = ast;
this.lines2position = lines2position;
}
/**
* Constructor.
* @param node DetailNode node.
* @param lines2position list to map lines.
* @noinspection AssignmentOrReturnOfFieldWithMutableType
*/
public CodeSelectorPresentation(DetailNode node, List<Integer> lines2position) {
this.node = node;
this.lines2position = lines2position;
}
/**
* Returns selection start position.
* @return selection start position.
*/
public int getSelectionStart() {
return selectionStart;
}
/**
* Returns selection end position.
* @return selection end position.
*/
public int getSelectionEnd() {
return selectionEnd;
}
/**
* Find start and end selection positions from AST line and Column.
*/
public void findSelectionPositions() {
if (node instanceof DetailAST) {
findSelectionPositions((DetailAST) node);
}
else {
findSelectionPositions((DetailNode) node);
}
}
/**
* Find start and end selection positions from AST line and Column.
* @param ast DetailAST node for which selection finds
*/
private void findSelectionPositions(DetailAST ast) {
selectionStart = lines2position.get(ast.getLineNo()) + ast.getColumnNo();
if (ast.hasChildren() || !TokenUtil.getTokenName(ast.getType()).equals(ast.getText())) {
selectionEnd = findLastPosition(ast);
}
else {
selectionEnd = selectionStart;
}
}
/**
* Find start and end selection positions from DetailNode line and Column.
* @param detailNode DetailNode node for which selection finds
*/
private void findSelectionPositions(DetailNode detailNode) {
selectionStart = lines2position.get(detailNode.getLineNumber())
+ detailNode.getColumnNumber();
selectionEnd = findLastPosition(detailNode);
}
/**
* Finds the last position of node without children.
* @param astNode DetailAST node.
* @return Last position of node without children.
*/
private int findLastPosition(final DetailAST astNode) {
final int lastPosition;
if (astNode.hasChildren()) {
lastPosition = findLastPosition(astNode.getLastChild());
}
else {
lastPosition = lines2position.get(astNode.getLineNo()) + astNode.getColumnNo()
+ astNode.getText().length();
}
return lastPosition;
}
/**
* Finds the last position of node without children.
* @param detailNode DetailNode node.
* @return Last position of node without children.
*/
private int findLastPosition(final DetailNode detailNode) {
final int lastPosition;
if (detailNode.getChildren().length == 0) {
lastPosition = lines2position.get(detailNode.getLineNumber())
+ detailNode.getColumnNumber() + detailNode.getText().length();
}
else {
final DetailNode lastChild =
detailNode.getChildren()[detailNode.getChildren().length - 1];
lastPosition = findLastPosition(lastChild);
}
return lastPosition;
}
}