Follow the example of Class and create a new expression for Import

Author: GeoffreyBooth

src/grammar.coffee

@@ -117,6 +117,8 @@ grammar =
     o 'Class'
     o 'Throw'
     o 'Yield'
+    o 'Import'
+    o 'Export'
   ]
 
   Yield: [
@@ -349,6 +351,10 @@ grammar =
     o 'CLASS SimpleAssignable EXTENDS Expression Block', -> new Class $2, $4, $5
   ]
 
+  Import: [
+    o 'IMPORT Expression',                      -> new Import $2
+  ]
+
   # Ordinary function invocation, or a chained series of calls.
   Invocation: [
     o 'Value OptFuncExist Arguments',           -> new Call $1, $3, $2
@@ -644,7 +650,7 @@ operators = [
   ['right',     'YIELD']
   ['right',     '=', ':', 'COMPOUND_ASSIGN', 'RETURN', 'THROW', 'EXTENDS']
   ['right',     'FORIN', 'FOROF', 'BY', 'WHEN']
-  ['right',     'IF', 'ELSE', 'FOR', 'WHILE', 'UNTIL', 'LOOP', 'SUPER', 'CLASS']
+  ['right',     'IF', 'ELSE', 'FOR', 'WHILE', 'UNTIL', 'LOOP', 'SUPER', 'CLASS', 'IMPORT', 'EXPORT']
   ['left',      'POST_IF']
 ]
 

src/nodes.coffee

@@ -1223,6 +1223,22 @@ exports.Class = class Class extends Base
     klass = new Assign @variable, klass if @variable
     klass.compileToFragments o
 
+#### Import
+
+exports.Import = class Import extends Base
+  constructor: (@expression) ->
+
+  children: ['expression']
+
+  isStatement: YES
+  jumps:       NO
+
+  makeReturn: THIS
+
+  compileNode: (o) ->
+    [].concat @makeCode(@tab + 'import '), @expression.compileToFragments(o), @makeCode(';')
+
+
 #### Assign
 
 # The **Assign** is used to assign a local variable to value, or to set the