implement chapter 13 in rust!

lox/class_fields.lox

@@ -0,0 +1,6 @@
+class Dog{}
+
+var dog = Dog();
+dog.name = "Leika";
+
+print dog.name;

lox/class_instance.lox

@@ -0,0 +1,3 @@
+class Bagel {}
+var bagel = Bagel();
+print bagel;

lox/class_methods.lox

@@ -0,0 +1,7 @@
+class Bacon {
+  eat() {
+    print "Crunch crunch crunch!";
+  }
+}
+
+Bacon().eat();

lox/class_name.lox

@@ -0,0 +1,7 @@
+class DevonshireCream {
+  serveOn() {
+    return "Scones";
+  }
+}
+
+print DevonshireCream;

lox/class_this.lox

@@ -0,0 +1,10 @@
+class Cake {
+  taste() {
+    var adjective = "delicious";
+    print "The " + this.flavor + " cake is " + adjective + "!";
+  }
+}
+
+var cake = Cake();
+cake.flavor = "German chocolate";
+cake.taste();

lox/fibonacci_timed.lox

@@ -0,0 +1,9 @@
+fun fib(n) {
+  if (n < 2) return n;
+  return fib(n - 1) + fib(n - 2); 
+}
+
+var before = clock();
+print fib(40);
+var after = clock();
+print after - before;

lox/init.lox

@@ -0,0 +1,9 @@
+class Foo {
+  init() {
+    this.name = "test";
+    print this;
+  }
+}
+
+var foo = Foo();
+print foo.name;

lox/init_early_return.lox

@@ -0,0 +1,8 @@
+class Foo {
+  init() {
+    return;
+    print this;
+  }
+}
+
+var foo = Foo();

lox/init_return.lox

@@ -0,0 +1,5 @@
+class Foo {
+  init() {
+    return "something else";
+  }
+}

lox/self_inheritance.lox

@@ -0,0 +1 @@
+class Oops < Oops {}

lox/super_call.lox

@@ -0,0 +1,14 @@
+class Doughnut {
+  cook() {
+    print "Fry until golden brown.";
+  }
+}
+
+class BostonCream < Doughnut {
+  cook() {
+    super.cook();
+    print "Pipe full of custard and coat with chocolate.";
+  }
+}
+
+BostonCream().cook();

lox/super_without_superclass.lox

@@ -0,0 +1,6 @@
+class Eclair {
+  cook() {
+    super.cook();
+    print "Pipe full of crème pâtissière.";
+  }
+}

lox/superclass_method.lox

@@ -0,0 +1,9 @@
+class Doughnut {
+  cook() {
+    print "Fry until golden brown.";
+  }
+}
+
+class BostonCream < Doughnut {}
+
+BostonCream().cook();

lox/superclass_not_class.lox

@@ -0,0 +1,3 @@
+var NotAClass = "I am totally not a class";
+
+class Subclass < NotAClass {}