Copyright (c) 2016, 2017 IBM Corporation and others.
This program and the accompanying materials
are made available under the terms of the Eclipse Public License 2.0
which accompanies this distribution, and is available at
https://www.eclipse.org/legal/epl-2.0/
SPDX-License-Identifier: EPL-2.0
Contributors:
    IBM Corporation - initial API and implementation
    
/*******************************************************************************
 * Copyright (c) 2016, 2017 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *     
 *******************************************************************************/
package org.eclipse.jdt.internal.compiler.ast;

import org.eclipse.jdt.core.compiler.CharOperation;
import org.eclipse.jdt.internal.compiler.lookup.ModuleBinding;
import org.eclipse.jdt.internal.compiler.lookup.Scope;

public class ModuleReference extends ASTNode {
	public char[][] tokens;
	public long[] sourcePositions; //each entry is using the code : (start<<32) + end
	public char[] moduleName;
	public ModuleBinding binding = null;

	public ModuleReference(char[][] tokens, long[] sourcePositions) {
		this.tokens = tokens;
		this.sourcePositions = sourcePositions;
		this.sourceEnd = (int) (sourcePositions[sourcePositions.length - 1] & 0x00000000FFFFFFFF);
		this.sourceStart = (int) (sourcePositions[0] >>> 32);
		this.moduleName = CharOperation.concatWith(tokens, '.');
	}

	@Override
	public StringBuffer print(int indent, StringBuffer output) {
		for (int i = 0; i < this.tokens.length; i++) {
			if (i > 0) output.append('.');
			output.append(this.tokens[i]);
		}
		return output;
	}

	public ModuleBinding resolve(Scope scope) {
		if (scope == null || this.binding != null)
			return this.binding;
		return this.binding = scope.environment().getModule(this.moduleName);
	}
}