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/*
* Copyright (C) 2007-2010 Júlio Vilmar Gesser.
* Copyright (C) 2011, 2013-2016 The JavaParser Team.
*
* This file is part of JavaParser.
*
* JavaParser can be used either under the terms of
* a) the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
* b) the terms of the Apache License
*
* You should have received a copy of both licenses in LICENCE.LGPL and
* LICENCE.APACHE. Please refer to those files for details.
*
* JavaParser 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.
*/
package com.github.javaparser.utils;
import com.github.javaparser.Position;
import com.github.javaparser.Range;
import com.github.javaparser.ast.Node;
import com.github.javaparser.ast.NodeList;
import com.github.javaparser.ast.body.ClassOrInterfaceDeclaration;
import com.github.javaparser.ast.body.FieldDeclaration;
import com.github.javaparser.ast.body.MethodDeclaration;
import com.github.javaparser.ast.expr.AnnotationExpr;
import com.github.javaparser.ast.nodeTypes.NodeWithAnnotations;
import com.github.javaparser.ast.nodeTypes.NodeWithType;
import com.github.javaparser.ast.type.Type;
import java.util.List;
import static java.lang.Integer.signum;
public final class PositionUtils {
private PositionUtils() {
// prevent instantiation
}
public static <T extends Node> void sortByBeginPosition(List<T> nodes) {
sortByBeginPosition(nodes, false);
}
public static <T extends Node> void sortByBeginPosition(NodeList<T> nodes) {
sortByBeginPosition(nodes, false);
}
public static <T extends Node> void sortByBeginPosition(List<T> nodes, final boolean ignoringAnnotations) {
nodes.sort((o1, o2) -> PositionUtils.compare(o1, o2, ignoringAnnotations));
}
public static boolean areInOrder(Node a, Node b) {
return areInOrder(a, b, false);
}
public static boolean areInOrder(Node a, Node b, boolean ignoringAnnotations) {
return compare(a, b, ignoringAnnotations) <= 0;
}
private static int compare(Node a, Node b, boolean ignoringAnnotations) {
if(a.getRange().isPresent() && !b.getRange().isPresent()) {
return -1;
}
if(!a.getRange().isPresent() && b.getRange().isPresent()) {
return 1;
}
if (!a.getRange().isPresent() && !b.getRange().isPresent()) {
return 0;
}
if (ignoringAnnotations) {
int signLine = signum(beginLineWithoutConsideringAnnotation(a) - beginLineWithoutConsideringAnnotation(b));
if (signLine == 0) {
return signum(beginColumnWithoutConsideringAnnotation(a) - beginColumnWithoutConsideringAnnotation(b));
} else {
return signLine;
}
}
Position aBegin = a.getBegin().get();
Position bBegin = b.getBegin().get();
int signLine = signum(aBegin.line - bBegin.line);
if (signLine == 0) {
return signum(aBegin.column - bBegin.column);
} else {
return signLine;
}
}
public static AnnotationExpr getLastAnnotation(Node node) {
if (node instanceof NodeWithAnnotations) {
NodeList<AnnotationExpr> annotations = NodeList.nodeList(((NodeWithAnnotations<?>) node).getAnnotations());
if (annotations.isEmpty()) {
return null;
}
sortByBeginPosition(annotations);
return annotations.get(annotations.size() - 1);
} else {
return null;
}
}
private static int beginLineWithoutConsideringAnnotation(Node node) {
return beginNodeWithoutConsideringAnnotations(node).getRange().get().begin.line;
}
private static int beginColumnWithoutConsideringAnnotation(Node node) {
return beginNodeWithoutConsideringAnnotations(node).getRange().get().begin.column;
}
private static Node beginNodeWithoutConsideringAnnotations(Node node) {
if (node instanceof MethodDeclaration || node instanceof FieldDeclaration) {
NodeWithType<?, Type> casted = (NodeWithType<?, Type>) node;
return casted.getType();
} else if (node instanceof ClassOrInterfaceDeclaration) {
ClassOrInterfaceDeclaration casted = (ClassOrInterfaceDeclaration) node;
return casted.getName();
} else {
return node;
}
}
public static boolean nodeContains(Node container, Node contained, boolean ignoringAnnotations) {
final Range containedRange = contained.getRange().get();
final Range containerRange = container.getRange().get();
if (!ignoringAnnotations || PositionUtils.getLastAnnotation(container) == null) {
return container.containsWithin(contained);
}
if (!container.containsWithin(contained)) {
return false;
}
// if the node is contained, but it comes immediately after the annotations,
// let's not consider it contained
if (container instanceof NodeWithAnnotations) {
int bl = beginLineWithoutConsideringAnnotation(container);
int bc = beginColumnWithoutConsideringAnnotation(container);
if (bl > containedRange.begin.line) return false;
if (bl == containedRange.begin.line && bc > containedRange.begin.column) return false;
if (containerRange.end.line < containedRange.end.line) return false;
// TODO < or <= ?
return !(containerRange.end.line == containedRange.end.line && containerRange.end.column < containedRange.end.column);
}
return true;
}
}
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