From c82e3b3b2de0633317ec8fc85925e91422820597 Mon Sep 17 00:00:00 2001
From: "Benjamin J. Culkin" <bjculkin@mix.wvu.edu>
Date: Sun, 8 Oct 2017 22:39:59 -0300
Subject: Start splitting into maven modules

---
 .../splitter/ExcludingTokenSplitter.java           | 71 ++++++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100644 base/src/main/java/bjc/utils/parserutils/splitter/ExcludingTokenSplitter.java

(limited to 'base/src/main/java/bjc/utils/parserutils/splitter/ExcludingTokenSplitter.java')

diff --git a/base/src/main/java/bjc/utils/parserutils/splitter/ExcludingTokenSplitter.java b/base/src/main/java/bjc/utils/parserutils/splitter/ExcludingTokenSplitter.java
new file mode 100644
index 0000000..369e7ae
--- /dev/null
+++ b/base/src/main/java/bjc/utils/parserutils/splitter/ExcludingTokenSplitter.java
@@ -0,0 +1,71 @@
+package bjc.utils.parserutils.splitter;
+
+import java.util.HashSet;
+import java.util.Set;
+import java.util.function.Predicate;
+
+import bjc.utils.funcdata.FunctionalList;
+import bjc.utils.funcdata.IList;
+
+/**
+ * A token splitter that will not split certain tokens.
+ *
+ * @author EVE
+ *
+ */
+public class ExcludingTokenSplitter implements TokenSplitter {
+	private final Set<String> literalExclusions;
+
+	private final IList<Predicate<String>> predExclusions;
+
+	private final TokenSplitter spliter;
+
+	/**
+	 * Create a new excluding token splitter.
+	 *
+	 * @param splitter
+	 *                The splitter to apply to non-excluded strings.
+	 */
+	public ExcludingTokenSplitter(final TokenSplitter splitter) {
+		spliter = splitter;
+
+		literalExclusions = new HashSet<>();
+
+		predExclusions = new FunctionalList<>();
+	}
+
+	/**
+	 * Exclude literal strings from splitting.
+	 *
+	 * @param exclusions
+	 *                The strings to exclude from splitting.
+	 */
+	public final void addLiteralExclusions(final String... exclusions) {
+		for (final String exclusion : exclusions) {
+			literalExclusions.add(exclusion);
+		}
+	}
+
+	/**
+	 * Exclude all of the strings matching any of the predicates from
+	 * splitting.
+	 *
+	 * @param exclusions
+	 *                The predicates to use for exclusions.
+	 */
+	@SafeVarargs
+	public final void addPredicateExclusion(final Predicate<String>... exclusions) {
+		for (final Predicate<String> exclusion : exclusions) {
+			predExclusions.add(exclusion);
+		}
+	}
+
+	@Override
+	public IList<String> split(final String input) {
+		if (literalExclusions.contains(input))
+			return new FunctionalList<>(input);
+		else if (predExclusions.anyMatch(pred -> pred.test(input)))
+			return new FunctionalList<>(input);
+		else return spliter.split(input);
+	}
+}
-- 
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