ideas, ideas.

hy/compiler.py

@@ -22,6 +22,7 @@ from hy.errors import HyError
 
 from hy.models.expression import HyExpression
 from hy.models.symbol import HySymbol
+from hy.models.integer import HyInteger
 from hy.models.string import HyString
 
 import ast
@@ -84,7 +85,7 @@ class HyASTCompiler(object):
     @builds("/")
     @builds("*")
     def compile_maths_expression(self, expression):
-        # operator = Mod | Pow | LShift | RShift | BitOr | 
+        # operator = Mod | Pow | LShift | RShift | BitOr |
         #            BitXor | BitAnd | FloorDiv
         # (to implement list) XXX
 
@@ -175,6 +176,12 @@ class HyASTCompiler(object):
         self.returnable = ret_status
         return ret
 
+    @builds(HyInteger)
+    def compile_number(self, number):
+        return ast.Num(n=number,
+                       lineno=number.start_line,
+                       col_offset=number.start_column)
+
     @builds(HySymbol)
     def compile_symbol(self, symbol):
         return ast.Name(id=str(symbol), ctx=ast.Load(),

hy/lex/machine.py

@@ -87,12 +87,14 @@ class Machine(object):
             if self.submachine:
                 self.submachine.process([char])
                 if type(self.submachine.state) == Idle:
-                    if len(self.submachine.nodes) != 1:
+                    if len(self.submachine.nodes) > 1:
                         raise LexException("Funky Submachine stuff")
-                    result = self.submachine.nodes[0]
+
+                    nodes = self.submachine.nodes
                     self.submachine = None
-                    if result:
-                        self.state.nodes.append(result)
+
+                    if len(nodes) > 0:
+                        self.state.nodes.append(nodes[0])
                 continue
 
             new = self.state.process(char)

hy/lex/states.py

@@ -120,7 +120,10 @@ class Expression(State):
 
     def exit(self):
         self.commit()
-        self.result = HyExpression(self.nodes)
+        if self.nodes != []:
+            self.result = HyExpression(self.nodes)
+        else:
+            self.result = None
 
     def process(self, char):
         """

tests/__init__.py

@@ -0,0 +1,4 @@
+#
+
+import hy
+from .native_tests.math import *

tests/native_tests/math.hy

@@ -0,0 +1,5 @@
+; copyright ..
+
+
+(def test_basic_math (fn ()
+  (assert (+ 2 2) 4)))

tox.ini

@@ -0,0 +1,7 @@
+[tox]
+envlist = py27,pypy,py32
+[testenv]
+commands = nosetests
+deps =
+ nose
+ setuptools