Add EffDoIf

src/main/java/ch/njol/skript/effects/EffDoIf.java

@@ -0,0 +1,87 @@
+/**
+ *   This file is part of Skript.
+ *
+ *  Skript is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  Skript is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with Skript.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ * Copyright 2011-2017 Peter Güttinger and contributors
+ */
+package ch.njol.skript.effects;
+
+import org.bukkit.event.Event;
+import org.eclipse.jdt.annotation.Nullable;
+
+import ch.njol.skript.Skript;
+import ch.njol.skript.doc.Description;
+import ch.njol.skript.doc.Examples;
+import ch.njol.skript.doc.Name;
+import ch.njol.skript.doc.Since;
+import ch.njol.skript.lang.Condition;
+import ch.njol.skript.lang.Effect;
+import ch.njol.skript.lang.Expression;
+import ch.njol.skript.lang.SkriptParser;
+import ch.njol.skript.lang.TriggerItem;
+import ch.njol.util.Kleenean;
+import org.eclipse.jdt.annotation.Nullable;
+
+@Name("Do If")
+@Description("Execute an effect if a condition is true.")
+@Examples({"on join:",
+		"\tgive a diamond to the player if the player has permission \"rank.vip\""})
+@Since("INSERT VERSION")
+public class EffDoIf extends Effect  {
+
+	static {
+		Skript.registerEffect(EffDoIf.class, "<.+> if <.+>");
+	}
+
+	@SuppressWarnings("null")
+	private Effect effect;
+
+	@SuppressWarnings("null")
+	private Condition condition;
+
+	@SuppressWarnings("null")
+	@Override
+	public boolean init(Expression<?>[] exprs, int matchedPattern, Kleenean isDelayed, SkriptParser.ParseResult parseResult) {
+		String eff = parseResult.regexes.get(0).group();
+		String cond = parseResult.regexes.get(1).group();
+		effect = Effect.parse(eff, "Can't understand this effect: " + eff);
+		if (effect instanceof EffDoIf) {
+			Skript.error("Do if effects may not be nested!");
+			return false;
+		}
+		condition = Condition.parse(cond, "Can't understand this condition: " + cond);
+		return effect != null && condition != null;
+	}
+
+	@Override
+    	protected void execute(Event e) {}
+
+	@Nullable
+    	@Override
+    	public TriggerItem walk(Event e) {
+        	if (condition.check(e)) {
+            		effect.setNext(getNext());
+            		return effect;
+        	}
+        	return getNext();
+    	}
+
+	@Override
+	public String toString(@Nullable Event e, boolean debug) {
+		return effect.toString(e, debug) + " if " + condition.toString(e, debug);
+	}
+
+}