/*
* Copyright (C) 2011 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jboss.errai.codegen.literal;
import org.jboss.errai.codegen.Context;
import org.jboss.errai.codegen.builder.callstack.LoadClassReference;
import org.jboss.errai.codegen.meta.MetaClass;
import org.jboss.errai.codegen.meta.MetaClassFactory;
import org.jboss.errai.codegen.meta.MetaType;
import org.jboss.errai.codegen.util.GenUtil;
import java.lang.reflect.Array;
import java.lang.reflect.Type;
/**
* Renders an array back to it's canonical Java-based literal representation, assuming the contents
* of the array can be represented as such.
*
* @author Mike Brock <cbrock@redhat.com>
* @author Christian Sadilek <csadilek@redhat.com>
*/
public class ArrayLiteral extends LiteralValue<Object> {
private final int dimensions;
private final Class<?> arrayType;
private final MetaClass mArrayType;
public ArrayLiteral(final Object value) {
super(value);
Class<?> type = value.getClass();
int dim = 0;
while (type.isArray()) {
dim++;
type = type.getComponentType();
}
this.dimensions = dim;
if (MetaClass.class.isAssignableFrom(type)) {
type = Class.class;
}
else if (MetaType.class.isAssignableFrom(type)) {
type = Type.class;
}
this.arrayType = type;
mArrayType = MetaClassFactory.get(arrayType).asArrayOf(dim);
}
@Override
public String getCanonicalString(final Context context) {
final StringBuilder buf = new StringBuilder("new " +
LoadClassReference.getClassReference(MetaClassFactory.get(arrayType), context));
final Object val = getValue();
for (int i = 0; i < dimensions; i++) {
buf.append("[]");
}
buf.append(" ");
buf.append(renderInlineArrayLiteral(context, val));
return buf.toString();
}
private static String renderInlineArrayLiteral(final Context context, final Object arrayInstance) {
final StringBuilder builder = new StringBuilder("{ ");
final int length = Array.getLength(arrayInstance);
Object element;
for (int i = 0; i < length; i++) {
element = Array.get(arrayInstance, i);
if (element == null) {
builder.append("null");
}
else if (element.getClass().isArray()) {
builder.append(renderInlineArrayLiteral(context, element));
}
else {
builder.append(GenUtil.generate(context, element).generate(context));
}
if (i + 1 < length) {
builder.append(", ");
}
}
return builder.append(" }").toString();
}
@Override
public MetaClass getType() {
return mArrayType;
}
}