6 files changed, 92 insertions, 0 deletions
diff --git a/src/ast/types/AtomType.java b/src/ast/types/AtomType.java
new file mode 100644
index 0000000..a44a06c
--- /dev/null
+++ b/src/ast/types/AtomType.java
@@ -0,0 +1,11 @@
+package com.clp.project.ast.types;
+
+/**
+ * An tom type.
+ * TODO: do I need to use this one?
+ */
+public class AtomType extends Type {
+    public String toPrint(String prefix) {
+        return prefix + "Atom\n";
+    }
+}
diff --git a/src/ast/types/BoolType.java b/src/ast/types/BoolType.java
new file mode 100644
index 0000000..7fc28ee
--- /dev/null
+++ b/src/ast/types/BoolType.java
@@ -0,0 +1,10 @@
+package com.clp.project.ast.types;
+
+/**
+ * A boolean type. A bool is True or False.
+ */
+public class BoolType extends Type {
+    public String toPrint(String prefix) {
+        return prefix + "Bool\n";
+    }
+}
diff --git a/src/ast/types/ErrorType.java b/src/ast/types/ErrorType.java
new file mode 100644
index 0000000..30cb70e
--- /dev/null
+++ b/src/ast/types/ErrorType.java
@@ -0,0 +1,10 @@
+package com.clp.project.ast.types;
+
+/**
+ * Error type.
+ */
+public class ErrorType extends Type {
+    public String toPrint(String prefix) {
+        return prefix + "Error\n";
+    }
+}
diff --git a/src/ast/types/IntType.java b/src/ast/types/IntType.java
new file mode 100644
index 0000000..9f4b250
--- /dev/null
+++ b/src/ast/types/IntType.java
@@ -0,0 +1,10 @@
+package com.clp.project.ast.types;
+
+/**
+ * An integer type.
+ */
+public class IntType extends Type {
+    public String toPrint(String prefix) {
+        return prefix + "Int\n";
+    }
+}
diff --git a/src/ast/types/Type.java b/src/ast/types/Type.java
new file mode 100644
index 0000000..4756255
--- /dev/null
+++ b/src/ast/types/Type.java
@@ -0,0 +1,41 @@
+package com.clp.project.ast.types;
+
+import java.util.ArrayList;
+
+import com.clp.project.semanticanalysis.SemanticError;
+import com.clp.project.semanticanalysis.SymbolTable;
+import com.clp.project.ast.nodes.*;
+
+/**
+ * A node which represents a type class.
+ */
+public class Type implements Node {
+    public boolean isEqual(Type A, Type B) {
+        if (A.getClass().equals(B.getClass()))
+            return true;
+        else
+            return false;
+    }
+
+    public String toPrint(String s) {
+        return s;
+    }
+
+    public ArrayList<SemanticError> checkSemantics(SymbolTable ST, int _nesting) {
+        // It is never invoked
+        return null;
+    }
+
+    @Override
+    public Type typeCheck() {
+        // It is never invoked
+        return null;
+    }
+
+    @Override
+    public String codeGeneration() {
+        // It is never invoked
+        return "";
+    }
+
+}
diff --git a/src/ast/types/VoidType.java b/src/ast/types/VoidType.java
new file mode 100644
index 0000000..766aee2
--- /dev/null
+++ b/src/ast/types/VoidType.java
@@ -0,0 +1,10 @@
+package com.clp.project.ast.types;
+
+/**
+ * A void type. Voids return nothing.
+ */
+public class VoidType extends Type {
+    public String toPrint(String prefix) {
+        return prefix + "Void\n";
+    }
+}