From 7c4d9b7d6dba55c77fd1fd24beedcb6147d46cae Mon Sep 17 00:00:00 2001
From: bculkin2442 <bjculkin@mix.wvu.edu>
Date: Wed, 30 Mar 2016 09:01:35 -0400
Subject: Changed some of the token manipulators to not affect solo operators

The main change is that they won't handle tokens that consist only
of the operator.
---
 .../main/java/bjc/utils/funcutils/ListUtils.java   | 52 +++++++++++++---------
 .../main/java/bjc/utils/funcutils/StringUtils.java | 34 ++++++++++++++
 2 files changed, 64 insertions(+), 22 deletions(-)
 create mode 100644 BJC-Utils2/src/main/java/bjc/utils/funcutils/StringUtils.java

(limited to 'BJC-Utils2/src')

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 7630069..6e8c63a 100644
--- a/BJC-Utils2/src/main/java/bjc/utils/funcutils/ListUtils.java
+++ b/BJC-Utils2/src/main/java/bjc/utils/funcutils/ListUtils.java
@@ -95,8 +95,8 @@ public class ListUtils {
 		/*
 		 * List that holds current partition
 		 */
-		GenHolder<FunctionalList<E>> currPart = new GenHolder<>(
-				new FunctionalList<>());
+		GenHolder<FunctionalList<E>> currPart =
+				new GenHolder<>(new FunctionalList<>());
 		/*
 		 * List that holds elements rejected during current pass
 		 */
@@ -142,6 +142,7 @@ public class ListUtils {
 	 * @param ops
 	 *            The operators to split on.
 	 * @return A list of tokens split on all the operators
+	 * 
 	 */
 	public static FunctionalList<String> splitTokens(
 			FunctionalList<String> input,
@@ -152,25 +153,28 @@ public class ListUtils {
 				(op) -> ret.transform((oldRet) -> oldRet.flatMap((tok) -> {
 					return op.merge((opName, opRegex) -> {
 						if (tok.contains(opName)) {
-							FunctionalList<String> splitTokens = new FunctionalList<>(
-									tok.split(opRegex));
-
-							FunctionalList<String> rt = new FunctionalList<>();
-
-							int tkSize = splitTokens.getSize();
-							splitTokens.forEachIndexed((idx, tk) -> {
-
-								if (idx != tkSize && idx != 0) {
-									rt.add(opName);
-									rt.add(tk);
-
-								} else {
-									rt.add(tk);
-
-								}
-							});
-
-							return rt;
+							if (StringUtils.containsOnly(tok, opRegex)) {
+								return new FunctionalList<>(tok);
+							} else {
+								FunctionalList<String> splitTokens =
+										new FunctionalList<>(
+												tok.split(opRegex));
+								FunctionalList<String> rt =
+										new FunctionalList<>();
+								int tkSize = splitTokens.getSize();
+								splitTokens.forEachIndexed((idx, tk) -> {
+
+									if (idx != tkSize && idx != 0) {
+										rt.add(opName);
+										rt.add(tk);
+
+									} else {
+										rt.add(tk);
+
+									}
+								});
+								return rt;
+							}
 						} else {
 							return new FunctionalList<>(tok);
 						}
@@ -188,6 +192,7 @@ public class ListUtils {
 	 * @param ops
 	 *            The affixes to remove
 	 * @return The tokens that have been deaffixed
+	 * 
 	 */
 	@SuppressWarnings("unchecked")
 	public static FunctionalList<String> deAffixTokens(
@@ -199,7 +204,10 @@ public class ListUtils {
 				(op) -> ret.transform((oldRet) -> oldRet.flatMap((tok) -> {
 					return (FunctionalList<String>) op
 							.merge((opName, opRegex) -> {
-								if (tok.startsWith(opName)) {
+								if (StringUtils.containsOnly(tok,
+										opRegex)) {
+									return new FunctionalList<>(tok);
+								} else if (tok.startsWith(opName)) {
 									return new FunctionalList<>(op,
 											tok.split(opRegex)[1]);
 								} else if (tok.endsWith(opName)) {
diff --git a/BJC-Utils2/src/main/java/bjc/utils/funcutils/StringUtils.java b/BJC-Utils2/src/main/java/bjc/utils/funcutils/StringUtils.java
new file mode 100644
index 0000000..b7d20aa
--- /dev/null
+++ b/BJC-Utils2/src/main/java/bjc/utils/funcutils/StringUtils.java
@@ -0,0 +1,34 @@
+package bjc.utils.funcutils;
+
+/**
+ * Utility methods for operations on strings
+ * 
+ * @author ben
+ *
+ */
+public class StringUtils {
+
+	/**
+	 * Check if a string consists only of one or more matches of a regular
+	 * expression
+	 * 
+	 * @param input
+	 *            The string to check
+	 * @param regex
+	 *            The regex to see if the string only contains matches of
+	 * @return Whether or not the string consists only of multiple matches
+	 *         of the provided regex
+	 */
+	public static boolean containsOnly(String input, String regex) {
+		/*
+		 * This regular expression is fairly simple.
+		 * 
+		 * First, we match the beginning of the string. Then, we start a
+		 * non-capturing group whose contents are the passed in regex. That
+		 * group is then matched one or more times and the pattern matches
+		 * to the end of the string
+		 */
+		return input.matches("\\A(?:" + regex + ")+\\Z");
+	}
+
+}
-- 
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