Fixing literals that should be statements, and adding failed compilation tests.

lib/nodes.js

@@ -320,22 +320,21 @@
       this.value = value;
     }
     Literal.prototype.makeReturn = function() {
-      if (this.jumps()) {
-        return this;
-      } else {
-        return new Return(this);
-      }
+      return new Return(this);
     };
     Literal.prototype.isAssignable = function() {
       return IDENTIFIER.test(this.value);
     };
+    Literal.prototype.isStatement = function() {
+      var _ref;
+      return (_ref = this.value) === 'break' || _ref === 'continue' || _ref === 'debugger';
+    };
     Literal.prototype.isComplex = NO;
     Literal.prototype.assigns = function(name) {
       return name === this.value;
     };
     Literal.prototype.jumps = function(o) {
-      var _ref;
-      if ((_ref = this.value) !== 'break' && _ref !== 'continue' && _ref !== 'debugger') {
+      if (!this.isStatement()) {
         return false;
       }
       if (!(o && (o.loop || o.block && (this.value !== 'continue')))) {
@@ -344,11 +343,13 @@
         return false;
       }
     };
-    Literal.prototype.compile = function() {
-      if (this.value.reserved) {
-        return "\"" + this.value + "\"";
+    Literal.prototype.compileNode = function(o) {
+      var code;
+      code = this.value.reserved ? "\"" + this.value + "\"" : this.value;
+      if (this.isStatement()) {
+        return "" + this.tab + code + ";";
       } else {
-        return this.value;
+        return code;
       }
     };
     Literal.prototype.toString = function() {

src/nodes.coffee

@@ -271,22 +271,26 @@ exports.Literal = class Literal extends Base
   constructor: (@value) ->
 
   makeReturn: ->
-    if @jumps() then this else new Return this
+    new Return this
 
   isAssignable: ->
     IDENTIFIER.test @value
 
+  isStatement: ->
+    @value in ['break', 'continue', 'debugger']
+
   isComplex: NO
 
   assigns: (name) ->
     name is @value
 
   jumps: (o) ->
-    return no unless @value in ['break', 'continue', 'debugger']
+    return no unless @isStatement()
     if not (o and (o.loop or o.block and (@value isnt 'continue'))) then this else no
 
-  compile: ->
-    if @value.reserved then "\"#{@value}\"" else @value
+  compileNode: (o) ->
+    code = if @value.reserved then "\"#{@value}\"" else @value
+    if @isStatement() then "#{@tab}#{code};" else code
 
   toString: ->
     ' "' + @value + '"'

test/test_compilation.coffee

@@ -13,3 +13,14 @@ catch e then eq e.message, 'unclosed CALL_START on line 1'
 eq CoffeeScript.compile('for k of o then', bare: on, globals: on),
    'for (k in o) {}'
 
+# Compilations that should fail.
+cantCompile = (code) ->
+  throws -> CoffeeScript.compile code
+
+cantCompile 'a = (break)'
+
+cantCompile 'a = (return 5 for item in list)'
+
+cantCompile 'a = (return 5 while condition)'
+
+cantCompile 'a = for x in y\n  return 5'