1 files changed, 38 insertions, 0 deletions
diff --git a/main/core/runtime/builtins/ConcatBuiltinFunction.java b/main/core/runtime/builtins/ConcatBuiltinFunction.java
new file mode 100644
index 0000000..5f87a38
--- /dev/null
+++ b/main/core/runtime/builtins/ConcatBuiltinFunction.java
@@ -0,0 +1,38 @@
+package com.jantuomi.interpreter.main.core.runtime.builtins;
+
+import com.jantuomi.interpreter.main.core.parser.datatype.DataContainer;
+import com.jantuomi.interpreter.main.core.parser.datatype.StringDataContainer;
+import com.jantuomi.interpreter.main.core.runtime.Function;
+import com.jantuomi.interpreter.main.exception.InterpreterException;
+
+import java.util.Arrays;
+import java.util.List;
+
+/**
+ * Created by jan on 21.6.2016.
+ */
+public class ConcatBuiltinFunction extends Function {
+    public ConcatBuiltinFunction() {
+        super(
+                Arrays.asList("strings"),
+                null
+        );
+    }
+
+    @Override
+    public String getName() {
+        return "concat";
+    }
+
+    @Override
+    public DataContainer evaluate(List<DataContainer> params) throws InterpreterException {
+        StringBuilder sb = new StringBuilder();
+        for (DataContainer d : params) {
+            sb.append(d.getData());
+        }
+
+        return new StringDataContainer(
+                sb.toString()
+        );
+    }
+}