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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.ast.type;
import com.github.javaparser.Range;
import com.github.javaparser.ast.AllFieldsConstructor;
import com.github.javaparser.ast.NodeList;
import com.github.javaparser.ast.expr.AnnotationExpr;
import com.github.javaparser.ast.nodeTypes.NodeWithAnnotations;
import com.github.javaparser.ast.observer.ObservableProperty;
import com.github.javaparser.ast.visitor.GenericVisitor;
import com.github.javaparser.ast.visitor.VoidVisitor;
import com.github.javaparser.utils.Pair;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Optional;
import static com.github.javaparser.ast.NodeList.nodeList;
import static com.github.javaparser.utils.Utils.assertNotNull;
import com.github.javaparser.ast.Node;
import com.github.javaparser.ast.visitor.CloneVisitor;
import com.github.javaparser.metamodel.ArrayTypeMetaModel;
import com.github.javaparser.metamodel.JavaParserMetaModel;
/**
* To indicate that a type is an array, it gets wrapped in an ArrayType for every array level it has.
* So, int[][] becomes ArrayType(ArrayType(int)).
*/
public class ArrayType extends ReferenceType implements NodeWithAnnotations<ArrayType> {
private Type componentType;
@AllFieldsConstructor
public ArrayType(Type componentType, NodeList<AnnotationExpr> annotations) {
this(null, componentType, annotations);
}
public ArrayType(Type type, AnnotationExpr... annotations) {
this(type, nodeList(annotations));
}
public ArrayType(Range range, Type componentType, NodeList<AnnotationExpr> annotations) {
super(range);
setComponentType(componentType);
setAnnotations(annotations);
}
@Override
public <R, A> R accept(final GenericVisitor<R, A> v, final A arg) {
return v.visit(this, arg);
}
@Override
public <A> void accept(final VoidVisitor<A> v, final A arg) {
v.visit(this, arg);
}
public Type getComponentType() {
return componentType;
}
public ArrayType setComponentType(final Type componentType) {
assertNotNull(componentType);
notifyPropertyChange(ObservableProperty.COMPONENT_TYPE, this.componentType, componentType);
if (this.componentType != null)
this.componentType.setParentNode(null);
this.componentType = componentType;
setAsParentNodeOf(componentType);
return this;
}
/**
* Takes lists of arrayBracketPairs, assumes the lists are ordered left to right and the pairs are ordered left to
* right, mirroring the actual code. The type gets wrapped in ArrayTypes so that the outermost ArrayType corresponds
* to the rightmost ArrayBracketPair.
*/
@SafeVarargs
public static Type wrapInArrayTypes(Type type, List<ArrayBracketPair>... arrayBracketPairLists) {
for (int i = arrayBracketPairLists.length - 1; i >= 0; i--) {
final List<ArrayBracketPair> arrayBracketPairList = arrayBracketPairLists[i];
if (arrayBracketPairList != null) {
for (int j = arrayBracketPairList.size() - 1; j >= 0; j--) {
ArrayBracketPair pair = arrayBracketPairList.get(j);
Range range = null;
if (type.getRange().isPresent() && pair.getRange().isPresent()) {
range = new Range(type.getBegin().get(), pair.getRange().get().end);
}
type = new ArrayType(range, type, pair.getAnnotations());
}
}
}
return type;
}
/**
* Takes a type that may be an ArrayType. Unwraps ArrayTypes until the element type is found.
*
* @return a pair of the element type, and the unwrapped ArrayTypes, if any.
*/
public static Pair<Type, List<ArrayBracketPair>> unwrapArrayTypes(Type type) {
final List<ArrayBracketPair> arrayBracketPairs = new ArrayList<>(0);
while (type instanceof ArrayType) {
ArrayType arrayType = (ArrayType) type;
arrayBracketPairs.add(new ArrayBracketPair(type.getRange().orElse(null), arrayType.getAnnotations()));
type = arrayType.getComponentType();
}
return new Pair<>(type, arrayBracketPairs);
}
/**
* Helper class that stores information about a pair of brackets.
*/
public static class ArrayBracketPair {
private Range range;
private NodeList<AnnotationExpr> annotations = new NodeList<>();
public ArrayBracketPair(Range range, NodeList<AnnotationExpr> annotations) {
setRange(range);
setAnnotations(annotations);
}
public NodeList<AnnotationExpr> getAnnotations() {
return annotations;
}
public ArrayBracketPair setAnnotations(NodeList<AnnotationExpr> annotations) {
this.annotations = assertNotNull(annotations);
return this;
}
public ArrayBracketPair setRange(Range range) {
this.range = range;
return this;
}
public Optional<Range> getRange() {
return Optional.ofNullable(range);
}
}
@Override
public ArrayType setAnnotations(NodeList<AnnotationExpr> annotations) {
return (ArrayType) super.setAnnotations(annotations);
}
@Override
public List<NodeList<?>> getNodeLists() {
return Arrays.asList(getAnnotations());
}
@Override
public boolean remove(Node node) {
if (node == null)
return false;
return super.remove(node);
}
@Override
public ArrayType clone() {
return (ArrayType) accept(new CloneVisitor(), null);
}
@Override
public ArrayTypeMetaModel getMetaModel() {
return JavaParserMetaModel.arrayTypeMetaModel;
}
}
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