feat(tsl): add IS comparator for strings

gradle.properties

@@ -5,7 +5,7 @@ org.gradle.daemon=false
 
 mod_id=twitchspawn
 mod_group=net.programmer.igoodie
-mod_version=0.4.6
+mod_version=0.4.7
 
 minecraft_version=1.12.2
 forge_version=14.23.3.2655

src/main/java/net/programmer/igoodie/twitchspawn/tslanguage/keyword/TSLComparatorSymbol.java

@@ -6,6 +6,8 @@ public enum TSLComparatorSymbol {
 
     IN_RANGE(
             "IN RANGE", InRangeComparator.class),
+    IS(
+            "IS", IsComparator.class),
     PREFIX(
             "PREFIX", PrefixComparator.class),
     POSTFIX(

src/main/java/net/programmer/igoodie/twitchspawn/tslanguage/predicate/IsComparator.java

@@ -0,0 +1,17 @@
+package net.programmer.igoodie.twitchspawn.tslanguage.predicate;
+
+public class IsComparator extends TSLComparator {
+
+    protected String value;
+
+    public IsComparator(String rightHandRaw) {
+        this.value = rightHandRaw;
+    }
+
+    @Override
+    public boolean compare(Object leftHand) {
+        return leftHand instanceof String
+                && value.equalsIgnoreCase((String) leftHand);
+    }
+
+}