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package com.github.javaparser.ast.type;
import com.github.javaparser.Range;
import com.github.javaparser.ast.ArrayBracketPair;
import com.github.javaparser.ast.expr.AnnotationExpr;
import com.github.javaparser.ast.nodeTypes.NodeWithAnnotations;
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;
/**
* 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<ArrayType> implements NodeWithAnnotations<ArrayType> {
private Type componentType;
public ArrayType(Type componentType, List<AnnotationExpr> annotations) {
setComponentType(componentType);
setAnnotations(annotations);
}
public ArrayType(Range range, Type componentType, List<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 type) {
this.componentType = type;
setAsParentNodeOf(this.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--) {
type = new ArrayType(type, arrayBracketPairList.get(j).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<>();
while (type instanceof ArrayType) {
ArrayType arrayType = (ArrayType) type;
arrayBracketPairs.add(new ArrayBracketPair(Range.UNKNOWN, arrayType.getAnnotations()));
type = arrayType.getComponentType();
}
return new Pair<>(type, arrayBracketPairs);
}
public static ArrayType arrayOf(Type type, AnnotationExpr... annotations) {
return new ArrayType(type, Arrays.asList(annotations));
}
}
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