Added the ObjectParser interface.

src/main/java/com/github/skiwi2/hearthmonitor/logreader/ObjectParser.java

@@ -0,0 +1,27 @@
+package com.github.skiwi2.hearthmonitor.logreader;
+
+import com.github.skiwi2.hearthmonitor.logapi.LogObject;
+
+/**
+ * Used to parse log objects from a string.
+ *
+ * @author Frank van Heeswijk
+ */
+public interface ObjectParser {
+    /**
+     * Returns whether this object parser can parse the input.
+     *
+     * @param input The input to check parsability for
+     * @return  Whether this object parser can parse the input.
+     */
+    boolean isParsable(final String input);
+
+    /**
+     * Parses the input String resulting in a LogObject.
+     *
+     * @param input The input to parse
+     * @return  The LogObject obtained after parsing the input.
+     * @throws com.github.skiwi2.hearthmonitor.logreader.NotParsableException   If this entry reader cannot parse the input to return a LogObject.
+     */
+    LogObject parse(final String input) throws NotParsableException;
+}