path: root/core/org.eclipse.statet.rj.data/src/org/eclipse/statet/rj/data/impl/RCharacter32Store.java

/*=============================================================================#
 # Copyright (c) 2009, 2022 Stephan Wahlbrink and others.
 # 
 # This program and the accompanying materials are made available under the
 # terms of the Eclipse Public License 2.0 which is available at
 # https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
 # which is available at https://www.apache.org/licenses/LICENSE-2.0.
 # 
 # SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
 # 
 # Contributors:
 #     Stephan Wahlbrink <sw@wahlbrink.eu> - initial API and implementation
 #=============================================================================*/

package org.eclipse.statet.rj.data.impl;

import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.util.Arrays;

import org.eclipse.statet.jcommons.lang.NonNullByDefault;
import org.eclipse.statet.jcommons.lang.Nullable;

import org.eclipse.statet.rj.data.RJIO;


/**
 * This implementation is limited to length of 2<sup>31</sup>-1.
 */
@NonNullByDefault
public class RCharacter32Store extends AbstractCharacterStore
		implements RDataResizeExtension<String>, ExternalizableRStore, Externalizable {
	
	
	private int length;
	
	protected @Nullable String [] charValues;
	
	
	public RCharacter32Store() {
		this.length= 0;
		this.charValues= EMPTY_STRING_ARRAY;
	}
	
	public RCharacter32Store(final int length) {
		this.length= length;
		this.charValues= new @Nullable String [length];
		Arrays.fill(this.charValues, "");
	}
	
	public RCharacter32Store(final @Nullable String [] values) {
		this.length= values.length;
		this.charValues= values;
	}
	
	public RCharacter32Store(final @Nullable String [] values, final int length) {
		this.length= length;
		this.charValues= values;
	}
	
	
	RCharacter32Store(final RCharacter32Store source, final boolean reuse) {
		@Nullable String [] values;
		if (reuse) {
			values= source.charValues;
		}
		else {
			values= ensureCapacity(this.charValues, source.length);
			System.arraycopy(source, 0, values, 0, source.length);
		}
		this.charValues= values;
		this.length= source.length;
	}
	
	
	public RCharacter32Store(final RJIO io, final int length) throws IOException {
		this.length= length;
		this.charValues= new @Nullable String [length];
		io.readStringData(this.charValues, length);
	}
	
	@Override
	public void writeExternal(final RJIO io) throws IOException {
		io.writeStringData(this.charValues, this.length);
	}
	
	@Override
	public void readExternal(final ObjectInput in) throws IOException {
		this.length= in.readInt();
		this.charValues= new @Nullable String [this.length];
		for (int i= 0; i < this.length; i++) {
			final int l= in.readInt();
			if (l >= 0) {
				final char[] c= new char[l];
				for (int j= 0; j < l; j++) {
					c[j]= in.readChar();
				}
				this.charValues[i]= new String(c);
			}
//			else {
//				this.charValues[i]= null;
//			}
		}
	}
	
	@Override
	public void writeExternal(final ObjectOutput out) throws IOException {
		out.writeInt(this.length);
		for (int i= 0; i < this.length; i++) {
			if (this.charValues[i] != null) {
				out.writeInt(this.charValues[i].length());
				out.writeChars(this.charValues[i]);
			}
			else {
				out.writeInt(-1);
			}
		}
	}
	
	
	@Override
	protected final boolean isStructOnly() {
		return false;
	}
	
	
	public final int length() {
		return this.length;
	}
	
	@Override
	public final long getLength() {
		return this.length;
	}
	
	
	@Override
	public boolean isNA(final int idx) {
		return (this.charValues[idx] == null);
	}
	
	@Override
	public boolean isNA(final long idx) {
		if (idx < 0 || idx >= this.length) {
			throw new IndexOutOfBoundsException(Long.toString(idx));
		}
		return (this.charValues[(int)idx] == null);
	}
	
	@Override
	public void setNA(final int idx) {
//		if (this.charValues[idx] == null) {
//			return;
//		}
		this.charValues[idx]= null;
	}
	
	@Override
	public void setNA(final long idx) {
		if (idx < 0 || idx >= this.length) {
			throw new IndexOutOfBoundsException(Long.toString(idx));
		}
//		if (this.charValues[(int)idx] == null) {
//			return;
//		}
		this.charValues[(int)idx]= null;
	}
	
	@Override
	public boolean isMissing(final int idx) {
		return (this.charValues[idx] == null);
	}
	
	@Override
	public boolean isMissing(final long idx) {
		if (idx < 0 || idx >= this.length) {
			throw new IndexOutOfBoundsException(Long.toString(idx));
		}
		return (this.charValues[(int)idx] == null);
	}
	
	
	@Override
	@SuppressWarnings("null")
	public String getChar(final int idx) {
		return this.charValues[idx];
	}
	
	@Override
	@SuppressWarnings("null")
	public String getChar(final long idx) {
		if (idx < 0 || idx >= this.length) {
			throw new IndexOutOfBoundsException(Long.toString(idx));
		}
		return this.charValues[(int)idx];
	}
	
	@Override
	public void setChar(final int idx, final String value) {
//		assert (value != null);
		this.charValues[idx]= value;
	}
	
	@Override
	public void setChar(final long idx, final String value) {
		if (idx < 0 || idx >= this.length) {
			throw new IndexOutOfBoundsException(Long.toString(idx));
		}
//		assert (value != null);
		this.charValues[(int)idx]= value;
	}
	
	
	private void prepareInsert(final int[] idxs) {
		this.charValues= prepareInsert(this.charValues, this.length, idxs);
		this.length+= idxs.length;
	}
	
	public void insertChar(final int idx, final String value) {
//		assert (value != null);
		prepareInsert(new int[] { idx });
		this.charValues[idx]= value;
	}
	
	@Override
	public void insertNA(final int idx) {
		prepareInsert(new int[] { idx });
		this.charValues[idx]= null;
	}
	
	@Override
	public void insertNA(final int[] idxs) {
		if (idxs.length == 0) {
			return;
		}
		prepareInsert(idxs);
		for (int i= 0; i < idxs.length; i++) {
			this.charValues[idxs[i]]= null;
		}
	}
	
	@Override
	public void remove(final int idx) {
		this.charValues= remove(this.charValues, this.length, new int[] { idx });
		this.length--;
	}
	
	@Override
	public void remove(final int[] idxs) {
		this.charValues= remove(this.charValues, this.length, idxs);
		this.length-= idxs.length;
	}
	
	
	@Override
	public @Nullable String get(final int idx) {
		if (idx < 0 || idx >= this.length) {
			throw new IndexOutOfBoundsException(Long.toString(idx));
		}
		return this.charValues[idx];
	}
	
	@Override
	public @Nullable String get(final long idx) {
		if (idx < 0 || idx >= this.length) {
			throw new IndexOutOfBoundsException(Long.toString(idx));
		}
		return this.charValues[(int)idx];
	}
	
	@Override
	public @Nullable String [] toArray() {
		final var array= new @Nullable String [this.length];
		System.arraycopy(this.charValues, 0, array, 0, array.length);
		return array;
	}
	
	
	@Override
	public long indexOfNA(long fromIdx) {
		if (fromIdx >= Integer.MAX_VALUE) {
			return -1;
		}
		if (fromIdx < 0) {
			fromIdx= 0;
		}
		final int l= this.length;
		final String[] chars= this.charValues;
		for (int i= (int)fromIdx; i < l; i++) {
			if (chars[i] == null) {
				return i;
			}
		}
		return -1;
	}
	
	public int indexOfNA(int fromIdx) {
		if (fromIdx < 0) {
			fromIdx= 0;
		}
		final int l= this.length;
		final String[] chars= this.charValues;
		for (int i= fromIdx; i < l; i++) {
			if (chars[i] == null) {
				return i;
			}
		}
		return -1;
	}
	
	@Override
	public long indexOf(final String character, long fromIdx) {
		if (character == null
				|| fromIdx >= Integer.MAX_VALUE) {
			return -1;
		}
		if (fromIdx < 0) {
			fromIdx= 0;
		}
		final int l= this.length;
		final String[] chars= this.charValues;
		for (int i= (int)fromIdx; i < l; i++) {
			if (chars[i] != null && chars[i].equals(character)) {
				return i;
			}
		}
		return -1;
	}
	
	public int indexOf(final String character, int fromIdx) {
		if (character == null) {
			throw new NullPointerException();
		}
		if (fromIdx < 0) {
			fromIdx= 0;
		}
		final int l= this.length;
		final String[] chars= this.charValues;
		while (fromIdx < l) {
			if (chars[fromIdx] != null && chars[fromIdx].equals(character)) {
				return fromIdx;
			}
			fromIdx++;
		}
		return -1;
	}
	
}