Functions have been done

Makefile

@@ -1,2 +1,2 @@
 repl:
-	gradle compileJava && rlwrap java -cp bin/main/ serene.simple.Main
+	gradle compileJava && rlwrap java -cp build/classes/java/main/ serene.simple.Main

src/main/java/serene/simple/FnSpecialForm.java

@@ -14,12 +14,9 @@ public class FnSpecialForm extends SpecialForm {
 
         return new Function<Object, Object>() {
             @Override
-            public Object apply(Object arg) {
-                Object args[] = {arg};
-                return this.apply(args);
-            }
+            public Object apply(Object arguments) {
+                Object[] args = (Object[]) arguments;
 
-            public Object apply(Object... args) {
                 Scope scope = new Scope(parentScope);
                 if (args.length != formalParams.length) {
                     throw new RuntimeException(String.format("Wrong number of arguments. Expected: %s, Got: %s.",
@@ -39,6 +36,7 @@ public class FnSpecialForm extends SpecialForm {
                 for (Node node : body) {
                     output = node.eval(scope);
                 }
+
                 return output;
             }
         };

src/main/java/serene/simple/ListNode.java

@@ -44,16 +44,16 @@ public class ListNode<T extends Node> extends Node implements Iterable<T> {
 
     @Override
     public Object eval(Scope scope) {
-        Function f = (Function) this.first().eval(scope);
+        Function<Object, Object> f = (Function) this.first().eval(scope);
         List<Object> args = new ArrayList<Object>();
 
-        for (T node : this.rest) {
+        for (T node : this.rest()) {
             args.add(node.eval(scope));
         }
         return f.apply(args.toArray());
     }
 
-        public T first() {
+    public T first() {
         if (this != EMPTY) {
             return this.first;
         }

src/main/java/serene/simple/Main.java

@@ -26,6 +26,7 @@ public class Main {
         System.out.println("Serene 'simple' v0.1.0");
         while(true) {
             String inputData = console.readLine("serene-> ");
+            //String inputData = "(fn (x) x)";
 
             if (inputData == null) break;
 
@@ -34,6 +35,7 @@ public class Main {
 
             try {
                 Object result = ListNode.EMPTY;
+
                 for (Node n : nodes) {
                     result = n.eval(rootScope);
                 }

src/main/java/serene/simple/Reader.java

@@ -76,7 +76,7 @@ public class Reader {
         while (true) {
             int ch = inputStream.read();
 
-            if(isWhiteSpace(ch) || ch == -1) {
+            if(isWhiteSpace(ch) || isClosingChar(ch) || ch == -1) {
                 inputStream.unread(ch);
                 break;
             };
@@ -100,16 +100,20 @@ public class Reader {
     }
 
     private static void skipWhiteSpaces(PushbackReader inputStream) throws IOException {
-      int ch = inputStream.read();
-      while (isWhiteSpace(ch)) {
-        ch = inputStream.read();
-      }
-      inputStream.unread(ch);
+        int ch = inputStream.read();
+
+        while (isWhiteSpace(ch)) {
+            ch = inputStream.read();
+        }
+        inputStream.unread(ch);
     }
 
     private static boolean isWhiteSpace(int ch) {
-        return (ch == ' ' || ch == '\t' ||
-                ch == '\f' || ch == '\r' ||
-                ch == '\n');
+        return (ch == ' ' || ch == '\t' || ch == '\f' || ch == '\r' || ch == '\n');
+    }
+
+    private static boolean isClosingChar(int ch) {
+        return (ch == ')' || ch == ']' ||
+                ch == '}');
     }
 }