Merge pull request #10 from boozec/check-semantics

Co-Authored-By: geno <gabriele.genovese2@studio.unibo.it>
Co-Authored-By: L0P0P <grassoemanuele@live.com> 

1 files changed, 17 insertions, 0 deletions

diff --git a/src/ast/types/NoneType.java b/src/ast/types/NoneType.java
new file mode 100644
index 0000000..730add9
--- /dev/null
+++ b/src/ast/types/NoneType.java
@@ -0,0 +1,17 @@
+package ast.types;
+
+/**
+ * A none type. None return unit.
+ */
+public class NoneType extends Type {
+
+    @Override
+    public String toPrint(String prefix) {
+        return prefix + "None\n";
+    }
+
+    @Override
+    public String toString() {
+        return "None";
+    }
+}