starting work on generics

Author: leogdion

Examples/Remaining/generics/dsl.swift

@@ -1,33 +1,40 @@
 import SyntaxKit
 
 // Example of generating a BlackjackCard struct with a nested Suit enum
-let structExample = Struct("Stack", generic: "Element") {
-    Variable(.var, name: "items", type: "[Element]", equals: "[]")
+let genericGroup = Group{
+    Protocol("Stackable") {
+        AssociatedType("Element")
+        FunctionRequirement("push", parameters: {
+            Parameter(name: "item", type: "Element")
+        }).mutating()
+    }
+    Struct("Stack", generic: "Element") {
+        Variable(.var, name: "items", type: "[Element]", equals: "[]")
 
-    Function("push") parameters:{
-        Parameter(name: "item", type: "Element")
-    } {
-        VariableExp("output").call("append") {
-            Parameter(name: "item", value: "item")
+        Function("push") parameters:{
+            Parameter(name: "item", type: "Element")
+        } {
+            VariableExp("output").call("append") {
+                Parameter(name: "item", value: "item")
+            }
         }
-    }
 
-    Function("pop", returns: "Element?") {
-        VariableExp("items").call("popLast")
-    }
+        Function("pop", returns: "Element?") {
+            VariableExp("items").call("popLast")
+        }
 
-    Function("peek", returns: "Element?") {
-        VariableExp("items").property("last")
-    }
+        Function("peek", returns: "Element?") {
+            VariableExp("items").property("last")
+        }
 
-    ComputedProperty("isEmpty") {
-        VariableExp("items").property("isEmpty")
-    }
+        ComputedProperty("isEmpty") {
+            VariableExp("items").property("isEmpty")
+        }
 
-    ComputedProperty("count") {
-        VariableExp("items").property("count")
+        ComputedProperty("count") {
+            VariableExp("items").property("count")
+        }
     }
 }
-
 // Generate and print the code
-print(structExample.generateCode()) 
+print(genericGroup.generateCode())