From 039f7f71e049029ab71a6d6c60d2eed5f95e5795 Mon Sep 17 00:00:00 2001
From: bculkin2442 <bjculkin@mix.wvu.edu>
Date: Thu, 16 Feb 2017 09:35:10 -0500
Subject: Update

---
 .../main/java/bjc/utils/data/CircularIterator.java | 31 +++++++++++++++
 .../src/main/java/bjc/utils/esodata/Tape.java      | 44 ++++++++++++++++++++++
 .../java/bjc/utils/funcdata/FunctionalList.java    |  5 ++-
 .../main/java/bjc/utils/funcdata/SentryList.java   | 22 +++++++++++
 .../main/java/bjc/utils/funcutils/ListUtils.java   |  8 ++--
 5 files changed, 105 insertions(+), 5 deletions(-)
 create mode 100644 BJC-Utils2/src/main/java/bjc/utils/data/CircularIterator.java
 create mode 100644 BJC-Utils2/src/main/java/bjc/utils/esodata/Tape.java
 create mode 100644 BJC-Utils2/src/main/java/bjc/utils/funcdata/SentryList.java

(limited to 'BJC-Utils2/src/main')

diff --git a/BJC-Utils2/src/main/java/bjc/utils/data/CircularIterator.java b/BJC-Utils2/src/main/java/bjc/utils/data/CircularIterator.java
new file mode 100644
index 0000000..cce7521
--- /dev/null
+++ b/BJC-Utils2/src/main/java/bjc/utils/data/CircularIterator.java
@@ -0,0 +1,31 @@
+package bjc.utils.data;
+
+import java.util.Iterator;
+
+public class CircularIterator<E> implements Iterator<E> {
+	private Iterable<E> source;
+	private Iterator<E> curr;
+
+	public CircularIterator(Iterable<E> src) {
+		source = src;
+		curr = source.iterator();
+	}
+
+	public boolean hasNext() {
+		// We always have something
+		return true;
+	}
+
+	public E next() {
+		if(curr.hasNext()) {
+			return curr.next();
+		} else {
+			curr = source.iterator();
+			return curr.next();
+		}
+	}
+
+	public void remove() {
+		curr.remove();
+	}
+}
diff --git a/BJC-Utils2/src/main/java/bjc/utils/esodata/Tape.java b/BJC-Utils2/src/main/java/bjc/utils/esodata/Tape.java
new file mode 100644
index 0000000..4ead829
--- /dev/null
+++ b/BJC-Utils2/src/main/java/bjc/utils/esodata/Tape.java
@@ -0,0 +1,44 @@
+package bjc.utils.esodata;
+
+import java.util.ArrayList;
+
+public class Tape<T> {
+	private ArrayList<T> backing;
+	private int pos;
+
+	public Tape() {
+		backing = new ArrayList<>();
+	}
+
+	public T item() {
+		return backing.get(pos);
+	}
+
+	public boolean left() {
+		if(pos == 0) return false;
+		
+		pos -= 1;
+		return true;
+	}
+
+	public boolean left(int amt) {
+		if((pos - amt) < 0) return false;
+
+		pos -= amt;
+		return true;
+	}
+
+	public boolean right() {
+		if(pos == (backing.size() - 1)) return false;
+
+		pos += 1;
+		return true;
+	}
+
+	public boolean right(int amt) {
+		if((pos + amt) >= (backing.size() - 1)) return false;
+
+		pos += amt;
+		return true;
+	}
+}
diff --git a/BJC-Utils2/src/main/java/bjc/utils/funcdata/FunctionalList.java b/BJC-Utils2/src/main/java/bjc/utils/funcdata/FunctionalList.java
index 0374a1f..cda27b1 100644
--- a/BJC-Utils2/src/main/java/bjc/utils/funcdata/FunctionalList.java
+++ b/BJC-Utils2/src/main/java/bjc/utils/funcdata/FunctionalList.java
@@ -437,13 +437,14 @@ public class FunctionalList<E> implements Cloneable, IList<E> {
 		StringBuilder sb = new StringBuilder("(");
 		Iterator<E> itr = toIterable().iterator();
 		E itm = itr.next();
+		int i = 0;
 
 		if(lSize == 1) {
 			return "(" + itm + ")";
 		}
 
-		for(int i = 0; itr.hasNext(); itm = itr.next()) {
-			sb.append(itm.toString());
+		for(E item : toIterable()) {
+			sb.append(item.toString());
 
 			if(i < lSize-1) {
 				sb.append(", ");
diff --git a/BJC-Utils2/src/main/java/bjc/utils/funcdata/SentryList.java b/BJC-Utils2/src/main/java/bjc/utils/funcdata/SentryList.java
new file mode 100644
index 0000000..49cb106
--- /dev/null
+++ b/BJC-Utils2/src/main/java/bjc/utils/funcdata/SentryList.java
@@ -0,0 +1,22 @@
+package bjc.utils.funcdata;
+
+import java.util.List;
+
+public class SentryList<T> extends FunctionalList<T> {
+	public SentryList() {
+		super();
+	}
+
+	public SentryList(List<T> backing) {
+		super(backing);
+	}
+
+	public boolean add(T item) {
+		boolean val = super.add(item);
+		
+		if(val)
+			System.out.println("Added item (" + item + ") to list");
+
+		return val;
+	}
+}
diff --git a/BJC-Utils2/src/main/java/bjc/utils/funcutils/ListUtils.java b/BJC-Utils2/src/main/java/bjc/utils/funcutils/ListUtils.java
index e640a2a..2f7b4fb 100644
--- a/BJC-Utils2/src/main/java/bjc/utils/funcutils/ListUtils.java
+++ b/BJC-Utils2/src/main/java/bjc/utils/funcutils/ListUtils.java
@@ -62,15 +62,17 @@ public class ListUtils {
 		} else {
 			StringBuilder state = new StringBuilder();
 
-			Iterator<String> itr = input.toIterable().iterator();
 			String tok = "";
 
-			for(int i = 1; itr.hasNext(); tok = itr.next()) {
-				state.append(tok);
+			int i = 1;
+			for(String itm : input.toIterable()) {
+				state.append(itm);
 
 				if(i != input.getSize()) {
 					state.append(seperator);
 				}
+
+				i += 1;
 			}
 
 			return state.toString();
-- 
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