Add expression to parse conditions.

src/main/java/com/shanebeestudios/skbee/elements/other/expressions/ExprParseCondition.java

@@ -0,0 +1,74 @@
+package com.shanebeestudios.skbee.elements.other.expressions;
+
+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.Expression;
+import ch.njol.skript.lang.ExpressionType;
+import ch.njol.skript.lang.SkriptParser.ParseResult;
+import ch.njol.skript.lang.TriggerItem;
+import ch.njol.skript.lang.util.SimpleExpression;
+import ch.njol.util.Kleenean;
+import org.bukkit.event.Event;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+@Name("Parse Condition - With Return")
+@Description({"This will parse a string as a condition and then check it and returns whether or not it's valid.",
+    "If you provide a command sender it works the same as Skript's 'effect commands'.",
+    "Otherwise it runs using the current event allowing you to use event-values",
+    "",
+    "**NOTE:** This is handled very differently from the parse effect expression in addition to behaving differently than Skript's `whether <condition>`.",
+    "If you have no good reason to use this, please check out the other two.",
+    "*tip: when running into invalid null states try replacing parts with variables*"})
+@Examples({"command /parse <string>:",
+    "\ttrigger:",
+    "\t\tif parse condition arg-1 is false:",
+    "\t\t\tsend \"&4:ERROR&c %arg-1% did not pass\""})
+@Since("2.15.0")
+public class ExprParseCondition extends SimpleExpression<Boolean> {
+
+    static {
+        Skript.registerExpression(ExprParseCondition.class, Boolean.class, ExpressionType.COMBINED,
+            "parse condition[s] %strings%");
+    }
+
+    private Expression<String> conditions;
+
+    @SuppressWarnings("unchecked")
+    @Override
+    public boolean init(Expression<?>[] exprs, int matchedPattern, Kleenean isDelayed, ParseResult parseResult) {
+        this.conditions = (Expression<String>) exprs[0];
+        return true;
+    }
+
+    @Override
+    protected Boolean @Nullable [] get(Event event) {
+        String[] conditions = this.conditions.getArray(event);
+        Boolean[] booleans = new Boolean[conditions.length];
+        for (int i = 0; i < conditions.length; i++) {
+            Condition condition = Condition.parse(conditions[i], null);
+            booleans[i] = condition != null && TriggerItem.walk(condition, event);
+        }
+        return booleans;
+    }
+
+    @Override
+    public boolean isSingle() {
+        return this.conditions.isSingle();
+    }
+
+    @Override
+    public @NotNull Class<? extends Boolean> getReturnType() {
+        return Boolean.class;
+    }
+
+    @Override
+    public @NotNull String toString(@Nullable Event e, boolean d) {
+        return "parse condition `" + this.conditions.toString(e, d) + "'";
+    }
+
+}