Implement Pratt parser.

1 files changed, 71 insertions, 0 deletions

diff --git a/BJC-Utils2/src/main/java/bjc/utils/parserutils/pratt/StringToken.java b/BJC-Utils2/src/main/java/bjc/utils/parserutils/pratt/StringToken.java
new file mode 100644
index 0000000..957e6fa
--- /dev/null
+++ b/BJC-Utils2/src/main/java/bjc/utils/parserutils/pratt/StringToken.java
@@ -0,0 +1,71 @@
+package bjc.utils.parserutils.pratt;
+
+/**
+ * Simple token implementation for strings.
+ * 
+ * @author EVE
+ *
+ */
+public class StringToken implements Token<String, String> {
+	private String	key;
+	private String	val;
+
+	/**
+	 * Create a new string token.
+	 * 
+	 * @param ky
+	 *                The key for the token.
+	 * 
+	 * @param vl
+	 *                The value for the token.
+	 */
+	public StringToken(String ky, String vl) {
+		key = ky;
+		val = vl;
+	}
+
+	@Override
+	public String getKey() {
+		return key;
+	}
+
+	@Override
+	public String getValue() {
+		return val;
+	}
+
+	@Override
+	public int hashCode() {
+		final int prime = 31;
+
+		int result = 1;
+		result = prime * result + ((key == null) ? 0 : key.hashCode());
+		result = prime * result + ((val == null) ? 0 : val.hashCode());
+
+		return result;
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if(this == obj) return true;
+		if(obj == null) return false;
+		if(!(obj instanceof StringToken)) return false;
+
+		StringToken other = (StringToken) obj;
+
+		if(key == null) {
+			if(other.key != null) return false;
+		} else if(!key.equals(other.key)) return false;
+
+		if(val == null) {
+			if(other.val != null) return false;
+		} else if(!val.equals(other.val)) return false;
+
+		return true;
+	}
+
+	@Override
+	public String toString() {
+		return String.format("StringToken [key=%s, val=%s]", key, val);
+	}
+}