From c82e3b3b2de0633317ec8fc85925e91422820597 Mon Sep 17 00:00:00 2001 From: "Benjamin J. Culkin" Date: Sun, 8 Oct 2017 22:39:59 -0300 Subject: Start splitting into maven modules --- .../main/java/bjc/utils/esodata/TapeChanger.java | 363 --------------------- 1 file changed, 363 deletions(-) delete mode 100644 BJC-Utils2/src/main/java/bjc/utils/esodata/TapeChanger.java (limited to 'BJC-Utils2/src/main/java/bjc/utils/esodata/TapeChanger.java') diff --git a/BJC-Utils2/src/main/java/bjc/utils/esodata/TapeChanger.java b/BJC-Utils2/src/main/java/bjc/utils/esodata/TapeChanger.java deleted file mode 100644 index dc885bc..0000000 --- a/BJC-Utils2/src/main/java/bjc/utils/esodata/TapeChanger.java +++ /dev/null @@ -1,363 +0,0 @@ -package bjc.utils.esodata; - -/** - * A tape changer is essentially a tape of tapes. - * - * It has a current tape that you can do operations to, but also operations to - * add/remove other tapes. - * - * If there is no tape currently loaded into the changer, all the methods will - * either return null/false. - * - * @param - * The element type of the tapes. - */ -public class TapeChanger implements Tape { - private Tape> tapes; - private Tape currentTape; - - /** - * Create a new empty tape changer. - */ - public TapeChanger() { - tapes = new SingleTape<>(); - } - - /** - * Create a new tape changer with the specified tapes. - * - * @param current - * The tape to mount first. - * @param others - * The tapes to put in this tape changer. - */ - @SafeVarargs - public TapeChanger(final Tape current, final Tape... others) { - this(); - - tapes.insertBefore(current); - - for (final Tape tp : others) { - tapes.insertAfter(tp); - tapes.right(); - } - - tapes.first(); - currentTape = tapes.item(); - } - - /** - * Get the item the tape is currently on. - * - * @return The item the tape is on. - */ - @Override - public T item() { - if (currentTape == null) return null; - - return currentTape.item(); - } - - /** - * Set the item the tape is currently on. - * - * @param itm - * The new value for the tape item. - */ - @Override - public void item(final T itm) { - if (currentTape == null) return; - - currentTape.item(itm); - } - - /** - * Get the current number of elements in the tape. - * - * @return The current number of elements in the tape. - */ - @Override - public int size() { - if (currentTape == null) return 0; - - return currentTape.size(); - } - - @Override - public int position() { - if (currentTape == null) return 0; - - return currentTape.position(); - } - - /** - * Insert an element before the current item. - * - * @param itm - * The item to add. - */ - @Override - public void insertBefore(final T itm) { - if (currentTape == null) return; - - currentTape.insertBefore(itm); - } - - /** - * Insert an element after the current item. - */ - @Override - public void insertAfter(final T itm) { - if (currentTape == null) return; - - currentTape.insertAfter(itm); - } - - /** - * Remove the current element. - * - * Also moves the cursor back one step if possible to maintain relative - * position, and removes the corresponding item from the non-active side - * - * @return The removed item from the active side. - */ - @Override - public T remove() { - if (currentTape == null) return null; - - return currentTape.remove(); - } - - /** - * Move the cursor to the left-most position. - */ - @Override - public void first() { - if (currentTape == null) return; - - currentTape.first(); - } - - /** - * Move the cursor the right-most position. - */ - @Override - public void last() { - if (currentTape == null) return; - - currentTape.last(); - } - - /** - * Move the cursor one space left. - * - * The cursor can't go past zero. - * - * @return True if the cursor was moved left. - */ - @Override - public boolean left() { - return left(1); - } - - /** - * Move the cursor the specified amount left. - * - * The cursor can't go past zero. Attempts to move the cursor by amounts - * that would exceed zero don't move the cursor at all. - * - * @param amt - * The amount to attempt to move the cursor left. - * - * @return True if the cursor was moved left. - */ - @Override - public boolean left(final int amt) { - if (currentTape == null) return false; - - return currentTape.left(amt); - } - - /** - * Move the cursor one space right. - * - * Moving the cursor right will auto-extend the tape if that is enabled. - * - * @return Whether the cursor was moved right. - */ - @Override - public boolean right() { - return right(1); - } - - /** - * Move the cursor the specified amount right. - * - * Moving the cursor right will auto-extend the tape if that is enabled. - * - * @param amt - * The amount to move the cursor right by. - * - * @return Whether the cursor was moved right. - */ - @Override - public boolean right(final int amt) { - if (currentTape == null) return false; - - return currentTape.right(amt); - } - - /** - * Flips the tape. - * - * The active side becomes inactive, and the inactive side becomes - * active. - * - * If the current tape is not double-sided, does nothing. - */ - public void flip() { - if (currentTape == null) return; - - if (currentTape.isDoubleSided()) { - ((DoubleTape) currentTape).flip(); - } - } - - @Override - public boolean isDoubleSided() { - if (currentTape == null) return false; - - return currentTape.isDoubleSided(); - } - - /** - * Check if a tape is currently loaded. - * - * @return Whether or not a tape is loaded. - */ - public boolean isLoaded() { - return currentTape != null; - } - - /** - * Move to the next tape in the changer. - * - * Attempting to load a tape that isn't there won't eject the current - * tape. - * - * @return Whether or not the next tape was loaded. - */ - public boolean nextTape() { - final boolean succ = tapes.right(); - - if (succ) { - currentTape = tapes.item(); - } - - return succ; - } - - /** - * Move to the previous tape in the changer. - * - * Attempting to load a tape that isn't there won't eject the current - * tape. - * - * @return Whether or not the previous tape was loaded. - */ - public boolean prevTape() { - final boolean succ = tapes.left(); - - if (succ) { - currentTape = tapes.item(); - } - - return succ; - } - - /** - * Inserts a tape into the tape changer. - * - * Any currently loaded tape is ejected, and becomes the previous tape. - * - * The specified tape is loaded. - * - * @param tp - * The tape to insert and load. - */ - public void insertTape(final Tape tp) { - tapes.insertAfter(tp); - tapes.right(); - - currentTape = tapes.item(); - } - - /** - * Removes the current tape. - * - * Does nothing if there is not a tape loaded. - * - * Loads the previous tape, if there is one. - * - * @return The removed tape. - */ - public Tape removeTape() { - if (currentTape == null) return null; - - final Tape tp = tapes.remove(); - currentTape = tapes.item(); - - return tp; - } - - /** - * Ejects the current tape. - * - * Does nothing if no tape is loaded. - */ - public void eject() { - currentTape = null; - } - - /** - * Get how many tapes are currently in the changer. - * - * @return How many tapes are currently in the changer. - */ - public int tapeCount() { - return tapes.size(); - } - - @Override - public int hashCode() { - final int prime = 31; - int result = 1; - result = prime * result + (currentTape == null ? 0 : currentTape.hashCode()); - result = prime * result + (tapes == null ? 0 : tapes.hashCode()); - return result; - } - - @Override - public boolean equals(final Object obj) { - if (this == obj) return true; - if (obj == null) return false; - if (!(obj instanceof TapeChanger)) return false; - - final TapeChanger other = (TapeChanger) obj; - - if (currentTape == null) { - if (other.currentTape != null) return false; - } else if (!currentTape.equals(other.currentTape)) return false; - - if (tapes == null) { - if (other.tapes != null) return false; - } else if (!tapes.equals(other.tapes)) return false; - - return true; - } - - @Override - public String toString() { - return String.format("TapeChanger [tapes=%s, currentTape='%s']", tapes, currentTape); - } -} -- cgit v1.2.3