futzing with ideas

hy/compiler.py

@@ -62,7 +62,7 @@ class HyASTCompiler(object):
         ret = []
         tree.reverse()
 
-        if self.returnable:
+        if self.returnable and len(tree) > 0:
             el = tree.pop()
             if not isinstance(el, ast.stmt):
                 ret.append(ast.Return(value=el,

hy/lex/machine.py

@@ -65,7 +65,7 @@ class Machine(object):
         """
         Accept and annotate the result.
         """
-        if state and state.result:
+        if state and not state.result is None:
             result = state.result
 
             result.start_line, result.end_line = (self.start_line, self.line)
@@ -87,14 +87,12 @@ 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")
 
                     nodes = self.submachine.nodes
                     self.submachine = None
-
-                    if len(nodes) > 0:
-                        self.state.nodes.append(nodes[0])
+                    self.state.nodes.append(nodes[0])
                 continue
 
             new = self.state.process(char)

hy/lex/states.py

@@ -22,6 +22,7 @@ from hy.models.expression import HyExpression
 from hy.models.integer import HyInteger
 from hy.models.symbol import HySymbol
 from hy.models.string import HyString
+from hy.models.list import HyList
 
 from hy.errors import HyError
 
@@ -95,14 +96,7 @@ class State(object):
         pass  # ABC
 
 
-class Expression(State):
-    """
-    Expression state. This will handle stuff like:
-
-        (...... (....))
-                ^^^^^^  -- expression
-        ^^^^^^^^^^^^^^^ -- expression
-    """
+class List(State):
 
     def enter(self):
         self.buf = ""
@@ -118,12 +112,52 @@ class Expression(State):
             self.nodes.append(ret)
         self.buf = ""
 
+    def exit(self):
+        self.commit()
+        self.result = HyList(self.nodes)
+
+    def process(self, char):
+        if char == "(":
+            self.machine.sub(Expression)
+            return
+
+        if char == "[":
+            self.machine.sub(List)
+            return
+
+        if char == "\"":
+            self.machine.sub(String)
+            return
+
+        if char == "]":
+            return Idle
+
+        if char in WHITESPACE:
+            self.commit()
+            return
+
+        if self.buf == "":
+            self._start_line = self.machine.line
+            self._start_column = self.machine.column
+
+        self.buf += char
+
+
+class Expression(List):
+    """
+    Expression state. This will handle stuff like:
+
+        (...... (....))
+                ^^^^^^  -- expression
+        ^^^^^^^^^^^^^^^ -- expression
+    """
+
     def exit(self):
         self.commit()
         if self.nodes != []:
             self.result = HyExpression(self.nodes)
         else:
-            self.result = None
+            self.result = HyList([])
 
     def process(self, char):
         """
@@ -137,6 +171,10 @@ class Expression(State):
             self.machine.sub(Expression)
             return
 
+        if char == "[":
+            self.machine.sub(List)
+            return
+
         if char == "\"":
             self.machine.sub(String)
             return

hy/models/expression.py

@@ -19,9 +19,10 @@
 # DEALINGS IN THE SOFTWARE.
 
 from hy.models import HyObject
+from hy.models.list import HyList
 
 
-class HyExpression(HyObject, list):
+class HyExpression(HyList):
     """
     Hy S-Expression. Basically just a list.
     """

hy/models/list.py

@@ -0,0 +1,28 @@
+# Copyright (c) 2012 Paul Tagliamonte <paultag@debian.org>
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the "Software"),
+# to deal in the Software without restriction, including without limitation
+# the rights to use, copy, modify, merge, publish, distribute, sublicense,
+# and/or sell copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+# DEALINGS IN THE SOFTWARE.
+
+from hy.models import HyObject
+
+
+class HyList(HyObject, list):
+    """
+    Hy List. Basically just a list.
+    """
+    pass

setup.py

@@ -24,7 +24,9 @@ from hy import __appname__, __version__
 from setuptools import setup
 
 
-long_description = open('README.md', 'r').read()
+long_description = """Hy is a Python <--> Lisp layer. It helps
+make things work nicer, and lets Python and the Hy lisp variant play
+nice together. """
 
 
 setup(

tests/native_tests/math.hy

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