switching from Op/Result to Op+Apply/Type+Result

__init__.py

 
 import gof
 import tensor
-import sparse
+#import sparse
 import compile
 import gradient
-import tensor_opt
+#import tensor_opt
 import scalar_opt
 
-from tensor import *
 from compile import *
-from tensor_opt import *
+#from tensor_opt import *
 from scalar_opt import *
 from gradient import *
+from tensor import *
 

_test_elemwise.py

@@ -11,14 +11,14 @@ import tensor
 from elemwise import *
 
 
-def inputs():
-    x = modes.build(Tensor('float64', (0, 0), name = 'x'))
-    y = modes.build(Tensor('float64', (1, 0), name = 'y'))
-    z = modes.build(Tensor('float64', (0, 0), name = 'z'))
-    return x, y, z
+# def inputs():
+#     x = modes.build(Tensor('float64', (0, 0), name = 'x'))
+#     y = modes.build(Tensor('float64', (1, 0), name = 'y'))
+#     z = modes.build(Tensor('float64', (0, 0), name = 'z'))
+#     return x, y, z
 
-def env(inputs, outputs, validate = True, features = []):
-    return Env(inputs, outputs, features = features, consistency_check = validate)
+# def env(inputs, outputs, validate = True, features = []):
+#     return Env(inputs, outputs, features = features, consistency_check = validate)
 
 
 class _test_DimShuffle(unittest.TestCase):
@@ -31,10 +31,11 @@ class _test_DimShuffle(unittest.TestCase):
                                   ((2, 3, 4), ('x', 2, 1, 0, 'x'), (1, 4, 3, 2, 1)),
                                   ((1, 4, 3, 2, 1), (3, 2, 1), (2, 3, 4)),
                                   ((1, 1, 4), (1, 2), (1, 4))]:
-            x = modes.build(Tensor('float64', [1 * (entry == 1) for entry in xsh], name = 'x'))
-            e = DimShuffle(x, shuffle).out
+            ib = [(entry == 1) for entry in xsh]
+            x = Tensor('float64', ib)('x')
+            e = DimShuffle(ib, shuffle)(x)
 #             print shuffle, e.owner.grad(e.owner.inputs, e.owner.outputs).owner.new_order
-            f = linker(env([x], [e])).make_function(inplace=False)
+            f = linker(Env([x], [e])).make_function()
             assert f(numpy.ones(xsh)).shape == zsh
 
     def test_perform(self):
@@ -53,10 +54,10 @@ class _test_Broadcast(unittest.TestCase):
                          ((2, 3, 4, 5), (1, 3, 1, 5)),
                          ((2, 3, 4, 5), (1, 1, 1, 1)),
                          ((), ())]:
-            x = modes.build(Tensor('float64', [1 * (entry == 1) for entry in xsh], name = 'x'))
-            y = modes.build(Tensor('float64', [1 * (entry == 1) for entry in ysh], name = 'y'))
-            e = Broadcast(Add, (x, y)).out
-            f = linker(env([x, y], [e])).make_function(inplace = False)
+            x = Tensor('float64', [(entry == 1) for entry in xsh])('x')
+            y = Tensor('float64', [(entry == 1) for entry in ysh])('y')
+            e = Elemwise(add)(x, y)
+            f = linker(Env([x, y], [e])).make_function()
 #             xv = numpy.array(range(numpy.product(xsh)))
 #             xv = xv.reshape(xsh)
 #             yv = numpy.array(range(numpy.product(ysh)))
@@ -80,10 +81,10 @@ class _test_Broadcast(unittest.TestCase):
                          ((2, 3, 4, 5), (1, 3, 1, 5)),
                          ((2, 3, 4, 5), (1, 1, 1, 1)),
                          ((), ())]:
-            x = modes.build(Tensor('float64', [1 * (entry == 1) for entry in xsh], name = 'x'))
-            y = modes.build(Tensor('float64', [1 * (entry == 1) for entry in ysh], name = 'y'))
-            e = Broadcast(Add, (x, y), {0:0}).out
-            f = linker(env([x, y], [e])).make_function(inplace = False)
+            x = Tensor('float64', [(entry == 1) for entry in xsh])('x')
+            y = Tensor('float64', [(entry == 1) for entry in ysh])('y')
+            e = Elemwise(Add(transfer_type(0)), {0:0})(x, y)
+            f = linker(Env([x, y], [e])).make_function()
             xv = numpy.asarray(numpy.random.rand(*xsh))
             yv = numpy.asarray(numpy.random.rand(*ysh))
             zv = xv + yv
@@ -105,29 +106,29 @@ class _test_Broadcast(unittest.TestCase):
         self.with_linker_inplace(gof.CLinker)
 
     def test_fill(self):
-        x = modes.build(Tensor('float64', [0, 0], name = 'x'))
-        y = modes.build(Tensor('float64', [1, 1], name = 'y'))
-        e = Broadcast(Second, (x, y), {0:0}).out
-        f = gof.CLinker(env([x, y], [e])).make_function(inplace = False)
+        x = Tensor('float64', [0, 0])('x')
+        y = Tensor('float64', [1, 1])('y')
+        e = Elemwise(Second(transfer_type(0)), {0:0})(x, y)
+        f = gof.CLinker(Env([x, y], [e])).make_function()
         xv = numpy.ones((5, 5))
         yv = numpy.random.rand(1, 1)
         f(xv, yv)
         assert (xv == yv).all()
 
     def test_weird_strides(self):
-        x = modes.build(Tensor('float64', [0, 0, 0, 0, 0], name = 'x'))
-        y = modes.build(Tensor('float64', [0, 0, 0, 0, 0], name = 'y'))
-        e = Broadcast(Add, (x, y)).out
-        f = gof.CLinker(env([x, y], [e])).make_function(inplace = False)
+        x = Tensor('float64', [0, 0, 0, 0, 0])('x')
+        y = Tensor('float64', [0, 0, 0, 0, 0])('y')
+        e = Elemwise(add)(x, y)
+        f = gof.CLinker(Env([x, y], [e])).make_function()
         xv = numpy.random.rand(2, 2, 2, 2, 2)
         yv = numpy.random.rand(2, 2, 2, 2, 2).transpose(4, 0, 3, 1, 2)
         zv = xv + yv
         assert (f(xv, yv) == zv).all()
 
     def test_same_inputs(self):
-        x = modes.build(Tensor('float64', [0, 0], name = 'x'))
-        e = Broadcast(Add, (x, x)).out
-        f = gof.CLinker(env([x], [e])).make_function(inplace = False)
+        x = Tensor('float64', [0, 0])('x')
+        e = Elemwise(add)(x, x)
+        f = gof.CLinker(Env([x], [e])).make_function()
         xv = numpy.random.rand(2, 2)
         zv = xv + xv
         assert (f(xv) == zv).all()
@@ -136,15 +137,17 @@ class _test_Broadcast(unittest.TestCase):
 class _test_CAReduce(unittest.TestCase):
 
     def with_linker(self, linker):
-        for xsh, tosum in [((5, 6), (0, 1)),
+        for xsh, tosum in [((5, 6), None),
+                           ((5, 6), (0, 1)),
                            ((5, 6), (0, )),
                            ((5, 6), (1, )),
                            ((5, 6), ()),
                            ((2, 3, 4, 5), (0, 1, 3)),
                            ((), ())]:
-            x = modes.build(Tensor('float64', [1 * (entry == 1) for entry in xsh], name = 'x'))
-            e = CAReduce(Add, [x], axis = tosum).out
-            f = linker(env([x], [e])).make_function(inplace = False)
+            x = Tensor('float64', [(entry == 1) for entry in xsh])('x')
+            e = CAReduce(add, axis = tosum)(x)
+            if tosum is None: tosum = range(len(xsh))
+            f = linker(Env([x], [e])).make_function()
             xv = numpy.asarray(numpy.random.rand(*xsh))
             zv = xv
             for axis in reversed(sorted(tosum)):

_test_scalar.py

 
 import unittest
 
-from gof import Result, Op, Env, modes
+from gof import Result, Op, Env
 import gof
 
 from scalar import *
 
 
 def inputs():
-    x = modes.build(as_scalar(1.0, 'x'))
-    y = modes.build(as_scalar(2.0, 'y'))
-    z = modes.build(as_scalar(3.0, 'z'))
-    return x, y, z
-
-def env(inputs, outputs, validate = True, features = []):
-    return Env(inputs, outputs, features = features, consistency_check = validate)
+    return floats('xyz')
 
 
 class _test_ScalarOps(unittest.TestCase):
@@ -22,7 +16,7 @@ class _test_ScalarOps(unittest.TestCase):
     def test_straightforward(self):
         x, y, z = inputs()
         e = mul(add(x, y), div(x, y))
-        g = env([x, y], [e])
+        g = Env([x, y], [e])
         fn = gof.DualLinker(g).make_function()
         assert fn(1.0, 2.0) == 1.5
 
@@ -32,25 +26,21 @@ class _test_composite(unittest.TestCase):
     def test_straightforward(self):
         x, y, z = inputs()
         e = mul(add(x, y), div(x, y))
-        C = composite([x, y], [e])
-        c = C(x, y)
+        C = Composite([x, y], [e])
+        c = C.make_node(x, y)
         # print c.c_code(['x', 'y'], ['z'], dict(id = 0))
-        c.perform()
-        assert c.outputs[0].data == 1.5
-        g = env([x, y], [c.out])
+        g = Env([x, y], [c.out])
         fn = gof.DualLinker(g).make_function()
         assert fn(1.0, 2.0) == 1.5
 
     def test_with_constants(self):
         x, y, z = inputs()
         e = mul(add(70.0, y), div(x, y))
-        C = composite([x, y], [e])
-        c = C(x, y)
-        assert "70.0" in c.c_code(['x', 'y'], ['z'], dict(id = 0))
+        C = Composite([x, y], [e])
+        c = C.make_node(x, y)
+        assert "70.0" in c.op.c_code(c, 'dummy', ['x', 'y'], ['z'], dict(id = 0))
         # print c.c_code(['x', 'y'], ['z'], dict(id = 0))
-        c.perform()
-        assert c.outputs[0].data == 36.0
-        g = env([x, y], [c.out])
+        g = Env([x, y], [c.out])
         fn = gof.DualLinker(g).make_function()
         assert fn(1.0, 2.0) == 36.0
 
@@ -59,14 +49,10 @@ class _test_composite(unittest.TestCase):
         e0 = x + y + z
         e1 = x + y * z
         e2 = x / y
-        C = composite([x, y, z], [e0, e1, e2])
-        c = C(x, y, z)
+        C = Composite([x, y, z], [e0, e1, e2])
+        c = C.make_node(x, y, z)
         # print c.c_code(['x', 'y', 'z'], ['out0', 'out1', 'out2'], dict(id = 0))
-        c.perform()
-        assert c.outputs[0].data == 6.0
-        assert c.outputs[1].data == 7.0
-        assert c.outputs[2].data == 0.5
-        g = env([x, y, z], c.outputs)
+        g = Env([x, y, z], c.outputs)
         fn = gof.DualLinker(g).make_function()
         assert fn(1.0, 2.0, 3.0) == [6.0, 7.0, 0.5]
         

_test_scalar_opt.py

@@ -10,53 +10,43 @@ from scalar_opt import *
 
 
 def inputs():
-    x = Scalar('float64', name = 'x')
-    y = Scalar('float64', name = 'y')
-    z = Scalar('float64', name = 'z')
-    a = Scalar('float64', name = 'a')
-    return x, y, z
+    return floats('xyz')
 
 def more_inputs():
-    a = Scalar('float64', name = 'a')
-    b = Scalar('float64', name = 'b')
-    c = Scalar('float64', name = 'c')
-    d = Scalar('float64', name = 'd')
-    return a, b, c, d
+    return floats('abcd')
 
 
 class _test_opts(unittest.TestCase):
 
     def test_pow_to_sqr(self):
-        x, y, z = inputs()
+        x, y, z = floats('xyz')
         e = x ** 2.0
         g = Env([x], [e])
-        assert str(g) == "[Pow(x, 2.0)]"
-        gof.ConstantFinder().optimize(g)
+        assert str(g) == "[pow(x, 2.0)]"
         pow2sqr_float.optimize(g)
-        assert str(g) == "[Sqr(x)]"
+        assert str(g) == "[sqr(x)]"
 
 
-# class _test_canonize(unittest.TestCase):
+class _test_canonize(unittest.TestCase):
 
 #     def test_muldiv(self):
 #         x, y, z = inputs()
 #         a, b, c, d = more_inputs()
 # #        e = (2.0 * x) / (2.0 * y)
-#         e = (2.0 * x) / (4.0 * y)
+# #        e = (2.0 * x) / (4.0 * y)
 # #        e = x / (y / z)
 # #        e = (x * y) / x
 # #        e = (x / y) * (y / z) * (z / x)
 # #        e = (a / b) * (b / c) * (c / d)
 # #        e = (a * b) / (b * c) / (c * d)
 # #        e = 2 * x / 2
-# #        e = x / y / x
+#         e = x / y / x
 #         g = Env([x, y, z, a, b, c, d], [e])
 #         print g
-#         gof.ConstantFinder().optimize(g)
 #         mulfn = lambda *inputs: reduce(lambda x, y: x * y, (1,) + inputs)
 #         divfn = lambda x, y: x / y
 #         invfn = lambda x: 1 / x
-#         Canonizer(Mul, Div, Inv, mulfn, divfn, invfn).optimize(g)
+#         Canonizer(mul, div, inv, mulfn, divfn, invfn).optimize(g)
 #         print g
         
 #     def test_plusmin(self):
@@ -101,35 +91,53 @@ class _test_opts(unittest.TestCase):
 #         print g
 
 #     def test_group_powers(self):
-#         x, y, z = inputs()
-#         a, b, c, d = more_inputs()
+#         x, y, z, a, b, c, d = floats('xyzabcd')
+
+###################
+#         c1, c2 = constant(1.), constant(2.)
+#         #e = pow(x, c1) * pow(x, y) / pow(x, 7.0) # <-- fucked
+#         #f = -- moving from div(mul.out, pow.out) to pow(x, sub.out)
+#         e = div(mul(pow(x, 2.0), pow(x, y)), pow(x, 7.0))
+
+#         g = Env([x, y, z, a, b, c, d], [e])
+#         print g
+#         print g.inputs, g.outputs, g.orphans
+#         f = sub(add(2.0, y), add(7.0))
+#         g.replace(e, pow(x, f))
+#         print g
+#         print g.inputs, g.outputs, g.orphans
+#         g.replace(f, sub(add(2.0, y), add(7.0))) # -- moving from sub(add.out, add.out) to sub(add.out, add.out)
+#         print g
+#         print g.inputs, g.outputs, g.orphans
+###################
+
 # #        e = x * exp(y) * exp(z)
 # #        e = x * pow(x, y) * pow(x, z)
 # #        e = pow(x, y) / pow(x, z)
-# #        e = pow(x, 2.0) * pow(x, y) / pow(x, 7.0)
+#         e = pow(x, 2.0) * pow(x, y) / pow(x, 7.0) # <-- fucked
 # #        e = pow(x - x, y)
 # #        e = pow(x, 2.0 + y - 7.0)
 # #        e = pow(x, 2.0) * pow(x, y) / pow(x, 7.0) / pow(x, z)
 # #        e = pow(x, 2.0 + y - 7.0 - z)
 # #        e = x ** y / x ** y
 # #        e = x ** y / x ** (y - 1.0)
-#         e = exp(x) * a * exp(y) / exp(z)
+# #        e = exp(x) * a * exp(y) / exp(z)
 #         g = Env([x, y, z, a, b, c, d], [e])
-#         print g
-#         gof.ConstantFinder().optimize(g)
+#         g.extend(gof.PrintListener(g))
+#         print g, g.orphans
 #         mulfn = lambda *inputs: reduce(lambda x, y: x * y, (1,) + inputs)
 #         divfn = lambda x, y: x / y
 #         invfn = lambda x: 1 / x
-#         Canonizer(Mul, Div, Inv, mulfn, divfn, invfn, group_powers).optimize(g)
-#         print g
+#         Canonizer(mul, div, inv, mulfn, divfn, invfn, group_powers).optimize(g)
+#         print g, g.orphans
 #         addfn = lambda *inputs: reduce(lambda x, y: x + y, (0,) + inputs)
 #         subfn = lambda x, y: x - y
 #         negfn = lambda x: -x
-#         Canonizer(Add, Sub, Neg, addfn, subfn, negfn).optimize(g)
-#         print g
+#         Canonizer(add, sub, neg, addfn, subfn, negfn).optimize(g)
+#         print g, g.orphans
 #         pow2one_float.optimize(g)
 #         pow2x_float.optimize(g)
-#         print g
+#         print g, g.orphans
         
 
 

compile.py

@@ -16,10 +16,10 @@ def exec_opt(inputs, outputs, features=[]):
 exec_opt.optimizer = None
 
 class _DefaultOptimizer(object):
-    const = gof.opt.ConstantFinder()
+    #const = gof.opt.ConstantFinder()
     merge = gof.opt.MergeOptimizer()
     def __call__(self, env):
-        self.const(env)
+        #self.const(env)
         self.merge(env)
 default_optimizer = _DefaultOptimizer()
         
@@ -31,7 +31,7 @@ def linker_cls_python_and_c(env):
     """Use this as the linker_cls argument to Function.__init__ to compare
     python and C implementations"""
     def checker(x, y):
-        x, y = x.data, y.data
+        x, y = x[0], y[0]
         if isinstance(x, numpy.ndarray) or isinstance(y, numpy.ndarray):
             if x.dtype != y.dtype or x.shape != y.shape or numpy.any(abs(x - y) > 1e-10):
                 raise Exception("Output mismatch.", {'performlinker': x, 'clinker': y})
@@ -105,17 +105,23 @@ class Function:
         #print 'orphans', orphans
 
         #print 'ops', gof.graph.ops(inputs, outputs)
-        env = gof.env.Env(inputs, outputs, features + [gof.EquivTool], consistency_check = True)
+        env = gof.env.Env(inputs, outputs)
 
         #print 'orphans in env', env.orphans()
 
-        env = env.clone(clone_inputs=True)
+        env, equiv = env.clone_get_equiv(clone_inputs=True)
+        for feature in features:
+            env.extend(feature(env))
+        env.extend(gof.DestroyHandler(env))
 
         #print 'orphans after clone', env.orphans()
 
-        for d, o in zip(orphan_data, [env.equiv(orphan) for orphan in orphans]):
+        for d, o in zip(orphan_data, [equiv[orphan] for orphan in orphans]):
             #print 'assigning orphan value', d
-            o.data = d
+            #o.data = d
+            new_o = gof.Constant(o.type, d)
+            env.replace(o, new_o)
+            assert new_o in env.orphans
 
         # optimize and link the cloned env
         if None is not optimizer:
@@ -127,11 +133,9 @@ class Function:
             self.__dict__.update(locals())
 
         if profiler is None:
-            self.fn  = linker.make_function(inplace=True,
-                                            unpack_single=unpack_single)
+            self.fn  = linker.make_function(unpack_single=unpack_single)
         else:
-            self.fn  = linker.make_function(inplace=True,
-                                            unpack_single=unpack_single,
+            self.fn  = linker.make_function(unpack_single=unpack_single,
                                             profiler=profiler)
         self.inputs = env.inputs
         self.outputs = env.outputs
@@ -146,16 +150,6 @@ class Function:
     def __call__(self, *args):
         return self.fn(*args)
 
-    def __copy__(self):
-        return Function(self.inputs, self.outputs,
-                        features = self.features,
-                        optimizer = self.optimizer,
-                        linker_cls = self.linker_cls,
-                        profiler = self.profiler,
-                        unpack_single = self.unpack_single,
-                        except_unreachable_input = self.except_unreachable_input,
-                        keep_locals = self.keep_locals)
-
 
 def eval_outputs(outputs,
         features = [],
@@ -171,20 +165,23 @@ def eval_outputs(outputs,
         else:
             return []
 
-    inputs = list(gof.graph.inputs(outputs))
-    in_data = [i.data for i in inputs if i.data is not None]
+    inputs = gof.graph.inputs(outputs)
+    if any(not isinstance(input, gof.Constant) for input in inputs):
+        raise TypeError("Cannot evaluate outputs because some of the leaves are not Constant.", outputs)
+    in_data = [i.data for i in inputs]
     #print 'in_data = ', in_data
     if len(inputs) != len(in_data):
         raise Exception('some input data is unknown')
 
-    env = gof.env.Env(inputs, outputs, features, consistency_check = True)
+    env = gof.env.Env(inputs, outputs)
+    env.replace_all(dict([(i, i.type()) for i in inputs]))
     env = env.clone(clone_inputs=True)
 
     _mark_indestructible(env.outputs)
     if None is not optimizer:
         optimizer(env)
     linker = linker_cls(env)
-    fn = linker.make_function(inplace=True, unpack_single=unpack_single)
+    fn = linker.make_function(unpack_single=unpack_single)
     rval = fn(*in_data)
     return rval
 

gof/__init__.py

 
-import op, result, ext, link, env, features, toolbox, graph, cc, opt
+import op, type, ext, link, env, features, toolbox, graph, cc, opt
 
 from op import *
-from result import *
+from graph import Apply, Result, Constant, as_apply, as_result
+from type import *
 from ext import *
 from link import *
 from env import *

gof/_test_cc.py

@@ -3,27 +3,14 @@ import unittest
 
 from link import PerformLinker, Profiler
 from cc import *
-from result import Result
+from type import Type
+from graph import Result, as_result, Apply, Constant
 from op import Op
 from env import Env
 
-class Double(Result):
-
-    def __init__(self, data, name = "oignon"):
-        Result.__init__(self, role = None, name = name)
-        assert isinstance(data, float)
-        self.data = data
-
-    def __str__(self):
-        return self.name
-
-    def __repr__(self):
-        return self.name
-
-    def __copy__(self):
-        return Double(self.data, self.name)
-
-#    def c_is_simple(self): return True
+class TDouble(Type):
+    def filter(self, data):
+        return float(data)
 
     def c_declare(self, name, sub):
         return "double %(name)s; void* %(name)s_bad_thing;" % locals()
@@ -35,8 +22,8 @@ class Double(Result):
         //printf("Initializing %(name)s\\n"); 
         """ % locals()
 
-    def c_literal(self):
-        return str(self.data)
+    def c_literal(self, data):
+        return str(data)
 
     def c_extract(self, name, sub):
         return """
@@ -65,116 +52,119 @@ class Double(Result):
             free(%(name)s_bad_thing);
         """ % locals()
 
+tdouble = TDouble()
+
+def double(name):
+    return Result(tdouble, None, None, name = name)
+
 
 class MyOp(Op):
 
-    nin = -1
+    def __init__(self, nin, name):
+        self.nin = nin
+        self.name = name
     
-    def __init__(self, *inputs):
+    def make_node(self, *inputs):
         assert len(inputs) == self.nin
+        inputs = map(as_result, inputs)
         for input in inputs:
-            if not isinstance(input, Double):
+            if input.type is not tdouble:
                 raise Exception("Error 1")
-        self.inputs = inputs
-        self.outputs = [Double(0.0, self.__class__.__name__ + "_R")]
+        outputs = [double(self.name + "_R")]
+        return Apply(self, inputs, outputs)
+
+    def __str__(self):
+        return self.name
+    
+    def perform(self, node, inputs, (out, )):
+        out[0] = self.impl(*inputs)
+
 
 class Unary(MyOp):
-    nin = 1
-#     def c_var_names(self):
-#         return [['x'], ['z']]
+    def __init__(self):
+        MyOp.__init__(self, 1, self.__class__.__name__)
 
 class Binary(MyOp):
-    nin = 2
-#     def c_var_names(self):
-#         return [['x', 'y'], ['z']]
+    def __init__(self):
+        MyOp.__init__(self, 2, self.__class__.__name__)
 
         
 class Add(Binary):
-    def c_code(self, (x, y), (z, ), sub):
+    def c_code(self, node, name, (x, y), (z, ), sub):
         return "%(z)s = %(x)s + %(y)s;" % locals()
-    def perform(self):
-        self.outputs[0].data = self.inputs[0].data + self.inputs[1].data
+    def impl(self, x, y):
+        return x + y
+add = Add()
         
 class Sub(Binary):
-    def c_code(self, (x, y), (z, ), sub):
+    def c_code(self, node, name, (x, y), (z, ), sub):
         return "%(z)s = %(x)s - %(y)s;" % locals()
-    def perform(self):
-        self.outputs[0].data = -10 # erroneous
+    def impl(self, x, y):
+        return -10 # erroneous (most of the time)
+sub = Sub()
         
 class Mul(Binary):
-    def c_code(self, (x, y), (z, ), sub):
+    def c_code(self, node, name, (x, y), (z, ), sub):
         return "%(z)s = %(x)s * %(y)s;" % locals()
-    def perform(self):
-        self.outputs[0].data = self.inputs[0].data * self.inputs[1].data
+    def impl(self, x, y):
+        return x * y
+mul = Mul()
         
 class Div(Binary):
-    def c_validate_update(self, (x, y), (z, ), sub):
-        return """
-        if (%(y)s == 0.0) {
-            PyErr_SetString(PyExc_ZeroDivisionError, "division by zero");
-            %(fail)s
-        }
-        """ % dict(locals(), **sub)
-    def c_code(self, (x, y), (z, ), sub):
+    def c_code(self, node, name, (x, y), (z, ), sub):
         return "%(z)s = %(x)s / %(y)s;" % locals()
-    def perform(self):
-        self.outputs[0].data = self.inputs[0].data / self.inputs[1].data
-
-
+    def impl(self, x, y):
+        return x / y
+div = Div()
 
-import modes
-modes.make_constructors(globals())
 
 def inputs():
-    x = modes.build(Double(1.0, 'x'))
-    y = modes.build(Double(2.0, 'y'))
-    z = modes.build(Double(3.0, 'z'))
+    x = double('x')
+    y = double('y')
+    z = double('z')
     return x, y, z
 
-def env(inputs, outputs, validate = True, features = []):
-    return Env(inputs, outputs, features = features, consistency_check = validate)
-
 
 class _test_CLinker(unittest.TestCase):
 
     def test_straightforward(self):
         x, y, z = inputs()
         e = add(mul(add(x, y), div(x, y)), sub(sub(x, y), z))
-        lnk = CLinker(env([x, y, z], [e]))
+        lnk = CLinker(Env([x, y, z], [e]))
         fn = lnk.make_function()
         self.failUnless(fn(2.0, 2.0, 2.0) == 2.0)
 
-    def test_orphan(self):
-        x, y, z = inputs()
-        z.data = 4.12345678
-        e = add(mul(add(x, y), div(x, y)), sub(sub(x, y), z))
-        lnk = CLinker(env([x, y], [e]))
-        fn = lnk.make_function()
-        self.failUnless(abs(fn(2.0, 2.0) + 0.12345678) < 1e-9)
-        self.failUnless("4.12345678" not in lnk.code_gen()) # we do not expect the number to be inlined
+#     def test_orphan(self):
+#         x, y, z = inputs()
+#         z = Constant(tdouble, 4.12345678)
+#         e = add(mul(add(x, y), div(x, y)), sub(sub(x, y), z))
+#         lnk = CLinker(Env([x, y], [e]))
+#         fn = lnk.make_function()
+#         self.failUnless(abs(fn(2.0, 2.0) + 0.12345678) < 1e-9)
+#         print lnk.code_gen()
+#         self.failUnless("4.12345678" not in lnk.code_gen()) # we do not expect the number to be inlined
 
     def test_literal_inlining(self):
         x, y, z = inputs()
-        z.data = 4.12345678
-        z.constant = True # this should tell the compiler to inline z as a literal
+        z = Constant(tdouble, 4.12345678)
         e = add(mul(add(x, y), div(x, y)), sub(sub(x, y), z))
-        lnk = CLinker(env([x, y], [e]))
+        lnk = CLinker(Env([x, y], [e]))
         fn = lnk.make_function()
         self.failUnless(abs(fn(2.0, 2.0) + 0.12345678) < 1e-9)
         self.failUnless("4.12345678" in lnk.code_gen()) # we expect the number to be inlined
 
-    def test_single_op(self):
+    def test_single_node(self):
         x, y, z = inputs()
-        op = Add(x, y)
-        lnk = CLinker(op)
+        node = add.make_node(x, y)
+        lnk = CLinker(Env(node.inputs, node.outputs))
         fn = lnk.make_function()
         self.failUnless(fn(2.0, 7.0) == 9)
     
     def test_dups(self):
         # Testing that duplicate inputs are allowed.
         x, y, z = inputs()
-        op = Add(x, x)
-        lnk = CLinker(op)
+        e = add(x, x)
+        lnk = CLinker(Env([x, x], [e]))
         fn = lnk.make_function()
         self.failUnless(fn(2.0, 2.0) == 4)
         # note: for now the behavior of fn(2.0, 7.0) is undefined
@@ -183,7 +173,7 @@ class _test_CLinker(unittest.TestCase):
         # Testing that duplicates are allowed inside the graph
         x, y, z = inputs()
         e = add(mul(y, y), add(x, z))
-        lnk = CLinker(env([x, y, z], [e]))
+        lnk = CLinker(Env([x, y, z], [e]))
         fn = lnk.make_function()
         self.failUnless(fn(1.0, 2.0, 3.0) == 8.0)
     
@@ -194,16 +184,25 @@ class _test_OpWiseCLinker(unittest.TestCase):
     def test_straightforward(self):
         x, y, z = inputs()
         e = add(mul(add(x, y), div(x, y)), sub(sub(x, y), z))
-        lnk = OpWiseCLinker(env([x, y, z], [e]))
+        lnk = OpWiseCLinker(Env([x, y, z], [e]))
         fn = lnk.make_function()
         self.failUnless(fn(2.0, 2.0, 2.0) == 2.0)
 
+    def test_constant(self):
+        x, y, z = inputs()
+        x = Constant(tdouble, 7.2, name = 'x')
+        e = add(mul(x, y), mul(y, z))
+        lnk = OpWiseCLinker(Env([y, z], [e]))
+        fn = lnk.make_function()
+        res = fn(1.5, 3.0)
+        self.failUnless(res == 15.3, res)
+
 
 class MyExc(Exception):
     pass
 def _my_checker(x, y):
-    if x.data != y.data:
-        raise MyExc("Output mismatch.", {'performlinker': x.data, 'clinker': y.data})
+    if x[0] != y[0]:
+        raise MyExc("Output mismatch.", {'performlinker': x[0], 'clinker': y[0]})
 
 
 class _test_DualLinker(unittest.TestCase):
@@ -211,7 +210,7 @@ class _test_DualLinker(unittest.TestCase):
     def test_straightforward(self):
         x, y, z = inputs()
         e = add(mul(x, y), mul(y, z)) # add and mul are correct in C and in Python
-        lnk = DualLinker(env([x, y, z], [e]), checker = _my_checker)
+        lnk = DualLinker(Env([x, y, z], [e]), checker = _my_checker)
         fn = lnk.make_function()
         res = fn(7.2, 1.5, 3.0)
         self.failUnless(res == 15.3, res)
@@ -219,7 +218,7 @@ class _test_DualLinker(unittest.TestCase):
     def test_mismatch(self):
         x, y, z = inputs()
         e = sub(mul(x, y), mul(y, z)) # sub is correct in C but erroneous in Python
-        g = env([x, y, z], [e])
+        g = Env([x, y, z], [e])
         lnk = DualLinker(g, checker = _my_checker)
         fn = lnk.make_function()
 
@@ -238,14 +237,14 @@ class _test_DualLinker(unittest.TestCase):
         else:
             self.fail()
 
-    def test_orphan(self):
-        x, y, z = inputs()
-        x.data = 7.2
-        e = add(mul(x, y), mul(y, z)) # add and mul are correct in C and in Python
-        lnk = DualLinker(env([y, z], [e]), checker = _my_checker)
-        fn = lnk.make_function()
-        res = fn(1.5, 3.0)
-        self.failUnless(res == 15.3, res)
+#     def test_orphan(self):
+#         x, y, z = inputs()
+#         x = Constant(tdouble, 7.2, name = 'x')
+#         e = add(mul(x, y), mul(y, z)) # add and mul are correct in C and in Python
+#         lnk = DualLinker(Env([y, z], [e]), checker = _my_checker)
+#         fn = lnk.make_function()
+#         res = fn(1.5, 3.0)
+#         self.failUnless(res == 15.3, res)
 
 
 

gof/_test_ext.py

 
 import unittest
 
-from result import Result
+from type import Type
+from graph import Result, as_result, Apply
 from op import Op
 from opt import PatternOptimizer, OpSubOptimizer
 
@@ -9,62 +10,64 @@ from ext import *
 from env import Env, InconsistencyError
 from toolbox import EquivTool
 
-from _test_result import MyResult
+from copy import copy
 
-class MyOp(Op):
-    nin = -1
+#from _test_result import MyResult
 
-    def __init__(self, *inputs):
-        assert len(inputs) == self.nin
-        for input in inputs:
-            if not isinstance(input, MyResult):
-                raise Exception("Error 1")
-        self.inputs = inputs
-        self.outputs = [MyResult(self.__class__.__name__ + "_R")]
 
-class Sigmoid(MyOp):
-    nin = 1
+class MyType(Type):
 
-class TransposeView(MyOp, Viewer):
-    nin = 1
-    def view_map(self):
-        return {self.outputs[0]: [self.inputs[0]]}
+    def filter(self, data):
+        return data
 
-class Add(MyOp):
-    nin = 2
+    def __eq__(self, other):
+        return isinstance(other, MyType)
 
-class AddInPlace(MyOp, Destroyer):
-    nin = 2
-    def destroyed_inputs(self):
-        return self.inputs[:1]
 
-class Dot(MyOp):
-    nin = 2
+def MyResult(name):
+    return Result(MyType(), None, None, name = name)
 
 
-# dtv_elim = PatternOptimizer((TransposeView, (TransposeView, 'x')), 'x')
+class MyOp(Op):
 
-# AddCls = Add
-# AddInPlaceCls = AddInPlace
+    def __init__(self, nin, name, vmap = {}, dmap = {}):
+        self.nin = nin
+        self.name = name
+        self.destroy_map = dmap
+        self.view_map = vmap
+    
+    def make_node(self, *inputs):
+        assert len(inputs) == self.nin
+        inputs = map(as_result, inputs)
+        for input in inputs:
+            if not isinstance(input.type, MyType):
+                raise Exception("Error 1")
+        outputs = [MyResult(self.name + "_R")]
+        return Apply(self, inputs, outputs)
 
-# a2i = OpSubOptimizer(Add, AddInPlace)
-# i2a = OpSubOptimizer(AddInPlace, Add)
+    def __str__(self):
+        return self.name
 
-# t2s = OpSubOptimizer(TransposeView, Sigmoid)
-# s2t = OpSubOptimizer(Sigmoid, TransposeView)
 
+sigmoid = MyOp(1, 'Sigmoid')
+transpose_view = MyOp(1, 'TransposeView', vmap = {0: [0]})
+add = MyOp(2, 'Add')
+add_in_place = MyOp(2, 'AddInPlace', dmap = {0: [0]})
+dot = MyOp(2, 'Dot')
 
-import modes
-modes.make_constructors(globals()) #, name_filter = lambda x:x)
 
 def inputs():
-    x = modes.build(MyResult('x'))
-    y = modes.build(MyResult('y'))
-    z = modes.build(MyResult('z'))
+    x = MyResult('x')
+    y = MyResult('y')
+    z = MyResult('z')
     return x, y, z
 
-def env(inputs, outputs, validate = True):
-    return Env(inputs, outputs, features = [EquivTool], consistency_check = validate)
+_Env = Env
+def Env(inputs, outputs, validate = True):
+    e = _Env(inputs, outputs)
+    e.extend(EquivTool(e))
+    e.extend(DestroyHandler(e), validate = validate)
+    return e
 
 
 class FailureWatch:
@@ -82,7 +85,7 @@ class _test_all(unittest.TestCase):
         x, y, z = inputs()
         e = add(add_in_place(x, y), add_in_place(x, y))
         try:
-            g = env([x,y,z], [e])
+            g = Env([x,y,z], [e])
             self.fail()
         except InconsistencyError, e:
             pass
@@ -90,10 +93,10 @@ class _test_all(unittest.TestCase):
     def test_multi_destroyers_through_views(self):
         x, y, z = inputs()
         e = dot(add(transpose_view(z), y), add(z, x))
-        g = env([x,y,z], [e])
+        g = Env([x,y,z], [e])
         assert g.consistent()
         fail = FailureWatch()
-        OpSubOptimizer(Add, AddInPlace, fail).optimize(g)
+        OpSubOptimizer(add, add_in_place, fail).optimize(g)
         assert g.consistent()
         assert fail.failures == 1 # should have succeeded once and failed once
 
@@ -102,7 +105,7 @@ class _test_all(unittest.TestCase):
         x, y, z = inputs()
         e1 = add(x, y)
         e2 = add(y, x)
-        g = env([x,y,z], [e1, e2])
+        g = Env([x,y,z], [e1, e2])
         chk = g.checkpoint()
         assert g.consistent()
         g.replace(e1, add_in_place(x, y))
@@ -126,30 +129,30 @@ class _test_all(unittest.TestCase):
     def test_long_destroyers_loop(self):
         x, y, z = inputs()
         e = dot(dot(add_in_place(x,y), add_in_place(y,z)), add(z,x))
-        g = env([x,y,z], [e])
+        g = Env([x,y,z], [e])
         assert g.consistent()
-        OpSubOptimizer(Add, AddInPlace).optimize(g)
+        OpSubOptimizer(add, add_in_place).optimize(g)
         assert g.consistent()
         assert str(g) != "[Dot(Dot(AddInPlace(x, y), AddInPlace(y, z)), AddInPlace(z, x))]" # we don't want to see that!
         e2 = dot(dot(add_in_place(x,y), add_in_place(y,z)), add_in_place(z,x))
         try:
-            g2 = env([x,y,z], [e2])
+            g2 = Env([x,y,z], [e2])
             self.fail()
         except InconsistencyError:
             pass
 
     def test_usage_loop(self):
         x, y, z = inputs()
-        g = env([x,y,z], [dot(add_in_place(x, z), x)], False)
+        g = Env([x,y,z], [dot(add_in_place(x, z), x)], False)
         assert not g.consistent()
-        OpSubOptimizer(AddInPlace, Add).optimize(g) # replace AddInPlace with Add
+        OpSubOptimizer(add_in_place, add).optimize(g) # replace add_in_place with add
         assert g.consistent()
 
     def test_usage_loop_through_views(self):
         x, y, z = inputs()
         aip = add_in_place(x, y)
         e = dot(aip, transpose_view(x))
-        g = env([x,y,z], [e], False)
+        g = Env([x,y,z], [e], False)
         assert not g.consistent()
         g.replace(aip, add(x, z))
         assert g.consistent()
@@ -158,7 +161,7 @@ class _test_all(unittest.TestCase):
         x, y, z = inputs()
         e0 = transpose_view(transpose_view(transpose_view(sigmoid(x))))
         e = dot(add_in_place(x,y), transpose_view(e0))
-        g = env([x,y,z], [e])
+        g = Env([x,y,z], [e])
         assert g.consistent() # because sigmoid can do the copy
         g.replace(e0, x, False)
         assert not g.consistent() # we cut off the path to the sigmoid
@@ -166,22 +169,23 @@ class _test_all(unittest.TestCase):
     def test_usage_loop_insert_views(self):
         x, y, z = inputs()
         e = dot(add_in_place(x, add(y, z)), sigmoid(sigmoid(sigmoid(sigmoid(sigmoid(x))))))
-        g = env([x,y,z], [e])
+        g = Env([x,y,z], [e])
         assert g.consistent()
         fail = FailureWatch()
-        OpSubOptimizer(Sigmoid, TransposeView, fail).optimize(g)
+        OpSubOptimizer(sigmoid, transpose_view, fail).optimize(g)
         assert g.consistent()
         assert fail.failures == 1 # it must keep one sigmoid in the long sigmoid chain
 
     def test_misc(self):
         x, y, z = inputs()
         e = transpose_view(transpose_view(transpose_view(transpose_view(x))))
-        g = env([x,y,z], [e])
+        g = Env([x,y,z], [e])
         assert g.consistent()
         chk = g.checkpoint()
-        PatternOptimizer((TransposeView, (TransposeView, 'x')), 'x').optimize(g)
+        PatternOptimizer((transpose_view, (transpose_view, 'x')), 'x').optimize(g)
         assert str(g) == "[x]"
         g.replace(g.equiv(e), add(x,y))
+        print g
         assert str(g) == "[Add(x, y)]"
         g.replace(g.equiv(e), dot(add_in_place(x,y), transpose_view(x)), False)
         assert str(g) == "[Dot(AddInPlace(x, y), TransposeView(x))]"
@@ -193,8 +197,10 @@ class _test_all(unittest.TestCase):
     def test_indestructible(self):
         x, y, z = inputs()
         x.indestructible = True
+        x = copy(x)
+        assert x.indestructible  # checking if indestructible survives the copy!
         e = add_in_place(x, y)
-        g = env([x,y,z], [e], False)
+        g = Env([x,y,z], [e], False)
         assert not g.consistent()
         g.replace(e, add(x, y))
         assert g.consistent()
@@ -204,7 +210,7 @@ class _test_all(unittest.TestCase):
         x.indestructible = True
         tv = transpose_view(x)
         e = add_in_place(tv, y)
-        g = env([x,y,z], [e], False)
+        g = Env([x,y,z], [e], False)
         assert not g.consistent()
         g.replace(tv, sigmoid(x))
         assert g.consistent()
@@ -215,7 +221,7 @@ class _test_all(unittest.TestCase):
         e2 = transpose_view(transpose_view(e1))
         e3 = add_in_place(e2, y)
         e4 = add_in_place(e1, z)
-        g = env([x,y,z], [e3, e4], False)
+        g = Env([x,y,z], [e3, e4], False)
         assert not g.consistent()
         g.replace(e2, transpose_view(x), False)
         assert not g.consistent()
@@ -224,7 +230,7 @@ class _test_all(unittest.TestCase):
         x, y, z = inputs()
         e0 = add_in_place(x, y)
         e = dot(sigmoid(e0), transpose_view(x))
-        g = env([x,y,z], [e], False)
+        g = Env([x,y,z], [e], False)
         assert not g.consistent()
         new_e0 = add(x, y)
         g.replace(e0, new_e0, False)
@@ -236,7 +242,7 @@ class _test_all(unittest.TestCase):
         x, y, z = inputs()
         e0 = transpose_view(x)
         e = dot(sigmoid(add_in_place(x, y)), e0)
-        g = env([x,y,z], [e], False)
+        g = Env([x,y,z], [e], False)
         assert not g.consistent()
         new_e0 = add(e0, y)
         g.replace(e0, new_e0, False)

gof/_test_graph.py

@@ -4,21 +4,18 @@ import unittest
 from graph import *
 
 from op import Op
-from result import Result
+from type import Type
+from graph import Result
 
 
-class MyResult(Result):
+
+class MyType(Type):
 
     def __init__(self, thingy):
         self.thingy = thingy
-        Result.__init__(self, role = None )
-        self.data = [self.thingy]
 
     def __eq__(self, other):
-        return self.same_properties(other)
-
-    def same_properties(self, other):
-        return isinstance(other, MyResult) and other.thingy == self.thingy
+        return isinstance(other, MyType) and other.thingy == self.thingy
 
     def __str__(self):
         return str(self.thingy)
@@ -26,37 +23,78 @@ class MyResult(Result):
     def __repr__(self):
         return str(self.thingy)
 
+def MyResult(thingy):
+    return Result(MyType(thingy), None, None)
+
 
 class MyOp(Op):
 
-    def __init__(self, *inputs):
+    def make_node(self, *inputs):
+        inputs = map(as_result, inputs)
         for input in inputs:
-            if not isinstance(input, MyResult):
+            if not isinstance(input.type, MyType):
+                print input, input.type, type(input), type(input.type)
                 raise Exception("Error 1")
-        self.inputs = inputs
-        self.outputs = [MyResult(sum([input.thingy for input in inputs]))]
+        outputs = [MyResult(sum([input.type.thingy for input in inputs]))]
+        return Apply(self, inputs, outputs)
+
+    def __str__(self):
+        return self.__class__.__name__
+
+MyOp = MyOp()
+
+
+
+# class MyResult(Result):
+
+#     def __init__(self, thingy):
+#         self.thingy = thingy
+#         Result.__init__(self, role = None )
+#         self.data = [self.thingy]
+
+#     def __eq__(self, other):
+#         return self.same_properties(other)
+
+#     def same_properties(self, other):
+#         return isinstance(other, MyResult) and other.thingy == self.thingy
+
+#     def __str__(self):
+#         return str(self.thingy)
+
+#     def __repr__(self):
+#         return str(self.thingy)
+
+
+# class MyOp(Op):
+
+#     def __init__(self, *inputs):
+#         for input in inputs:
+#             if not isinstance(input, MyResult):
+#                 raise Exception("Error 1")
+#         self.inputs = inputs
+#         self.outputs = [MyResult(sum([input.thingy for input in inputs]))]
 
 
 class _test_inputs(unittest.TestCase):
 
     def test_straightforward(self):
         r1, r2 = MyResult(1), MyResult(2)
-        op = MyOp(r1, r2)
-        assert inputs(op.outputs) == set([r1, r2])
+        node = MyOp.make_node(r1, r2)
+        assert inputs(node.outputs) == set([r1, r2])
 
     def test_deep(self):
         r1, r2, r5 = MyResult(1), MyResult(2), MyResult(5)
-        op = MyOp(r1, r2)
-        op2 = MyOp(op.outputs[0], r5)
-        assert inputs(op2.outputs) == set([r1, r2, r5])
+        node = MyOp.make_node(r1, r2)
+        node2 = MyOp.make_node(node.outputs[0], r5)
+        assert inputs(node2.outputs) == set([r1, r2, r5])
 
     def test_unreached_inputs(self):
         r1, r2, r5 = MyResult(1), MyResult(2), MyResult(5)
-        op = MyOp(r1, r2)
-        op2 = MyOp(op.outputs[0], r5)
+        node = MyOp.make_node(r1, r2)
+        node2 = MyOp.make_node(node.outputs[0], r5)
         try:
             # function doesn't raise if we put False instead of True
-            ro = results_and_orphans([r1, r2, op2.outputs[0]], op.outputs, True)
+            ro = results_and_orphans([r1, r2, node2.outputs[0]], node.outputs, True)
             self.fail()
         except Exception, e:
             if e[0] is results_and_orphans.E_unreached:
@@ -68,70 +106,84 @@ class _test_orphans(unittest.TestCase):
 
     def test_straightforward(self):
         r1, r2, r5 = MyResult(1), MyResult(2), MyResult(5)
-        op = MyOp(r1, r2)
-        op2 = MyOp(op.outputs[0], r5)
-        assert orphans([r1, r2], op2.outputs) == set([r5])
+        node = MyOp.make_node(r1, r2)
+        node2 = MyOp.make_node(node.outputs[0], r5)
+        assert orphans([r1, r2], node2.outputs) == set([r5])
     
 
 class _test_as_string(unittest.TestCase):
 
-    leaf_formatter = str
-    node_formatter = lambda op, argstrings: "%s(%s)" % (op.__class__.__name__,
+    leaf_formatter = lambda self, leaf: str(leaf.type)
+    node_formatter = lambda self, node, argstrings: "%s(%s)" % (node.op,
                                                                 ", ".join(argstrings))
 
+    def str(self, inputs, outputs):
+        return as_string(inputs, outputs,
+                         leaf_formatter = self.leaf_formatter,
+                         node_formatter = self.node_formatter)
+
     def test_straightforward(self):
         r1, r2 = MyResult(1), MyResult(2)
-        op = MyOp(r1, r2)
-        assert as_string([r1, r2], op.outputs) == ["MyOp(1, 2)"]
+        node = MyOp.make_node(r1, r2)
+        assert self.str([r1, r2], node.outputs) == ["MyOp(1, 2)"]
 
     def test_deep(self):
         r1, r2, r5 = MyResult(1), MyResult(2), MyResult(5)
-        op = MyOp(r1, r2)
-        op2 = MyOp(op.outputs[0], r5)
-        assert as_string([r1, r2, r5], op2.outputs) == ["MyOp(MyOp(1, 2), 5)"]
+        node = MyOp.make_node(r1, r2)
+        node2 = MyOp.make_node(node.outputs[0], r5)
+        assert self.str([r1, r2, r5], node2.outputs) == ["MyOp(MyOp(1, 2), 5)"]
 
     def test_multiple_references(self):
         r1, r2, r5 = MyResult(1), MyResult(2), MyResult(5)
-        op = MyOp(r1, r2)
-        op2 = MyOp(op.outputs[0], op.outputs[0])
-        assert as_string([r1, r2, r5], op2.outputs) == ["MyOp(*1 -> MyOp(1, 2), *1)"]
+        node = MyOp.make_node(r1, r2)
+        node2 = MyOp.make_node(node.outputs[0], node.outputs[0])
+        assert self.str([r1, r2, r5], node2.outputs) == ["MyOp(*1 -> MyOp(1, 2), *1)"]
 
     def test_cutoff(self):
         r1, r2, r5 = MyResult(1), MyResult(2), MyResult(5)
-        op = MyOp(r1, r2)
-        op2 = MyOp(op.outputs[0], op.outputs[0])
-        assert as_string(op.outputs, op2.outputs) == ["MyOp(3, 3)"]
-        assert as_string(op2.inputs, op2.outputs) == ["MyOp(3, 3)"]
+        node = MyOp.make_node(r1, r2)
+        node2 = MyOp.make_node(node.outputs[0], node.outputs[0])
+        assert self.str(node.outputs, node2.outputs) == ["MyOp(3, 3)"]
+        assert self.str(node2.inputs, node2.outputs) == ["MyOp(3, 3)"]
 
 
 class _test_clone(unittest.TestCase):
 
+    leaf_formatter = lambda self, leaf: str(leaf.type)
+    node_formatter = lambda self, node, argstrings: "%s(%s)" % (node.op,
+                                                                ", ".join(argstrings))
+
+    def str(self, inputs, outputs):
+        return as_string(inputs, outputs,
+                         leaf_formatter = self.leaf_formatter,
+                         node_formatter = self.node_formatter)
+
     def test_accurate(self):
         r1, r2 = MyResult(1), MyResult(2)
-        op = MyOp(r1, r2)
-        new = clone([r1, r2], op.outputs)
-        assert as_string([r1, r2], new) == ["MyOp(1, 2)"]
+        node = MyOp.make_node(r1, r2)
+        new = clone([r1, r2], node.outputs)
+        assert self.str([r1, r2], new) == ["MyOp(1, 2)"]
 
     def test_copy(self):
         r1, r2, r5 = MyResult(1), MyResult(2), MyResult(5)
-        op = MyOp(r1, r2)
-        op2 = MyOp(op.outputs[0], r5)
-        new = clone([r1, r2, r5], op2.outputs)
-        assert op2.outputs[0] == new[0] and op2.outputs[0] is not new[0] # the new output is like the old one but not the same object
-        assert op2 is not new[0].owner # the new output has a new owner
+        node = MyOp.make_node(r1, r2)
+        node2 = MyOp.make_node(node.outputs[0], r5)
+        new = clone([r1, r2, r5], node2.outputs)
+        assert node2.outputs[0].type == new[0].type and node2.outputs[0] is not new[0] # the new output is like the old one but not the same object
+        assert node2 is not new[0].owner # the new output has a new owner
         assert new[0].owner.inputs[1] is r5 # the inputs are not copied
-        assert new[0].owner.inputs[0] == op.outputs[0] and new[0].owner.inputs[0] is not op.outputs[0] # check that we copied deeper too
+        assert new[0].owner.inputs[0].type == node.outputs[0].type and new[0].owner.inputs[0] is not node.outputs[0] # check that we copied deeper too
 
     def test_not_destructive(self):
         # Checks that manipulating a cloned graph leaves the original unchanged.
         r1, r2, r5 = MyResult(1), MyResult(2), MyResult(5)
-        op = MyOp(MyOp(r1, r2).outputs[0], r5)
-        new = clone([r1, r2, r5], op.outputs)
-        new_op = new[0].owner
-        new_op.inputs = MyResult(7), MyResult(8)
+        node = MyOp.make_node(MyOp.make_node(r1, r2).outputs[0], r5)
+        new = clone([r1, r2, r5], node.outputs)
+        new_node = new[0].owner
+        new_node.inputs = MyResult(7), MyResult(8)
 
-        assert as_string(inputs(new_op.outputs), new_op.outputs) == ["MyOp(7, 8)"]
-        assert as_string(inputs(op.outputs), op.outputs) == ["MyOp(MyOp(1, 2), 5)"]
+        assert self.str(inputs(new_node.outputs), new_node.outputs) == ["MyOp(7, 8)"]
+        assert self.str(inputs(node.outputs), node.outputs) == ["MyOp(MyOp(1, 2), 5)"]
 
 
 

gof/_test_link.py

@@ -2,70 +2,67 @@
 
 import unittest
 
-from result import Result
+from graph import Result, as_result, Apply
+from type import Type
 from op import Op
 from env import Env
 
 from link import *
 
-from _test_result import Double
+#from _test_result import Double
 
-class MyOp(Op):
-
-    nin = -1
 
-    def __init__(self, *inputs):
-        assert len(inputs) == self.nin
-        for input in inputs:
-            if not isinstance(input, Double):
-                raise Exception("Error 1")
-        self.inputs = inputs
-        self.outputs = [Double(0.0, self.__class__.__name__ + "_R")]
+class TDouble(Type):
+    def filter(self, data):
+        return float(data)
 
-    def perform(self):
-        self.outputs[0].data = self.impl(*[input.data for input in self.inputs])
+tdouble = TDouble()
 
+def double(name):
+    return Result(tdouble, None, None, name = name)
 
-class Unary(MyOp):
-    nin = 1
 
-class Binary(MyOp):
-    nin = 2
+class MyOp(Op):
 
+    def __init__(self, nin, name, impl = None):
+        self.nin = nin
+        self.name = name
+        if impl:
+            self.impl = impl
     
-class Add(Binary):
-    def impl(self, x, y):
-        return x + y
+    def make_node(self, *inputs):
+        assert len(inputs) == self.nin
+        inputs = map(as_result, inputs)
+        for input in inputs:
+            if input.type is not tdouble:
+                raise Exception("Error 1")
+        outputs = [double(self.name + "_R")]
+        return Apply(self, inputs, outputs)
 
-class Sub(Binary):
-    def impl(self, x, y):
-        return x - y
+    def __str__(self):
+        return self.name
     
-class Mul(Binary):
-    def impl(self, x, y):
-        return x * y
+    def perform(self, node, inputs, (out, )):
+        out[0] = self.impl(*inputs)
 
-class Div(Binary):
-    def impl(self, x, y):
-        return x / y
+add = MyOp(2, 'Add', lambda x, y: x + y)
+sub = MyOp(2, 'Sub', lambda x, y: x - y)
+mul = MyOp(2, 'Mul', lambda x, y: x * y)
+div = MyOp(2, 'Div', lambda x, y: x / y)
 
-class RaiseErr(Unary):
-    def impl(self, x):
+def notimpl(self, x):
     raise NotImplementedError()
 
+raise_err = MyOp(1, 'RaiseErr', notimpl)
+
 
-import modes
-modes.make_constructors(globals())
 
 def inputs():
-    x = modes.build(Double(1.0, 'x'))
-    y = modes.build(Double(2.0, 'y'))
-    z = modes.build(Double(3.0, 'z'))
+    x = double('x')
+    y = double('y')
+    z = double('z')
     return x, y, z
 
-def env(inputs, outputs, validate = True, features = []):
-    return Env(inputs, outputs, features = features, consistency_check = validate)
-
 def perform_linker(env):
     lnk = PerformLinker(env)
     return lnk
@@ -73,58 +70,79 @@ def perform_linker(env):
 
 class _test_PerformLinker(unittest.TestCase):
 
-    def test_thunk_inplace(self):
+    def test_thunk(self):
         x, y, z = inputs()
         e = mul(add(x, y), div(x, y))
-        fn, i, o = perform_linker(env([x, y, z], [e])).make_thunk(True)
-        fn()
-        assert e.data == 1.5
-
-    def test_thunk_not_inplace(self):
-        x, y, z = inputs()
-        e = mul(add(x, y), div(x, y))
-        fn, i, o = perform_linker(env([x, y, z], [e])).make_thunk(False)
+        fn, i, o = perform_linker(Env([x, y, z], [e])).make_thunk()
+        i[0].data = 1
+        i[1].data = 2
         fn()
         assert o[0].data == 1.5
-        assert e.data != 1.5
         
     def test_function(self):
         x, y, z = inputs()
         e = mul(add(x, y), div(x, y))
-        fn = perform_linker(env([x, y, z], [e])).make_function()
+        fn = perform_linker(Env([x, y, z], [e])).make_function()
         assert fn(1.0, 2.0, 3.0) == 1.5
-        assert e.data != 1.5 # not inplace
+
+    def test_constant(self):
+        x, y, z = inputs()
+        y = Constant(tdouble, 2.0)
+        e = mul(add(x, y), div(x, y))
+        fn = perform_linker(Env([x], [e])).make_function()
+        assert fn(1.0) == 1.5
 
     def test_input_output_same(self):
         x, y, z = inputs()
         a,d = add(x,y), div(x,y)
         e = mul(a,d)
-        fn = perform_linker(env([e], [e])).make_function()
-        self.failUnless(1 is fn(1))
+        fn = perform_linker(Env([e], [e])).make_function()
+        self.failUnless(1.0 is fn(1.0))
 
     def test_input_dependency0(self):
         x, y, z = inputs()
         a,d = add(x,y), div(x,y)
         e = mul(a,d)
-        fn = perform_linker(env([x, a], [e])).make_function()
-        self.failUnless(fn(1.0,9.0) == 4.5)
+        fn = perform_linker(Env([x, y, a], [e])).make_function()
+        self.failUnless(fn(1.0,2.0,9.0) == 4.5)
 
     def test_skiphole(self):
         x,y,z = inputs()
         a = add(x,y)
-        r = RaiseErr(a).out
+        r = raise_err(a)
         e = add(r,a)
-        fn = perform_linker(env([x, y,r], [e])).make_function()
+        fn = perform_linker(Env([x, y,r], [e])).make_function()
         self.failUnless(fn(1.0,2.0,4.5) == 7.5)
 
-    def test_disconnected_input_output(self):
-        x,y,z = inputs()
-        a = add(x,y)
-        a.data = 3.0 # simulate orphan calculation
-        fn = perform_linker(env([z], [a])).make_function(inplace=True)
-        self.failUnless(fn(1.0) == 3.0)
-        self.failUnless(fn(2.0) == 3.0)
-
+#     def test_disconnected_input_output(self):
+#         x,y,z = inputs()
+#         a = add(x,y)
+#         a.data = 3.0 # simulate orphan calculation
+#         fn = perform_linker(env([z], [a])).make_function(inplace=True)
+#         self.failUnless(fn(1.0) == 3.0)
+#         self.failUnless(fn(2.0) == 3.0)
+
+#     def test_thunk_inplace(self):
+#         x, y, z = inputs()
+#         e = mul(add(x, y), div(x, y))
+#         fn, i, o = perform_linker(Env([x, y, z], [e])).make_thunk(True)
+#         fn()
+#         assert e.data == 1.5
+
+#     def test_thunk_not_inplace(self):
+#         x, y, z = inputs()
+#         e = mul(add(x, y), div(x, y))
+#         fn, i, o = perform_linker(env([x, y, z], [e])).make_thunk(False)
+#         fn()
+#         assert o[0].data == 1.5
+#         assert e.data != 1.5
+
+#     def test_function(self):
+#         x, y, z = inputs()
+#         e = mul(add(x, y), div(x, y))
+#         fn = perform_linker(env([x, y, z], [e])).make_function()
+#         assert fn(1.0, 2.0, 3.0) == 1.5
+#         assert e.data != 1.5 # not inplace
 
 
 if __name__ == '__main__':

gof/_test_modes.py

@@ -4,7 +4,7 @@ import unittest
 from modes import *
 
 
-from result import Result
+from graph import Result
 from op import Op
 from env import Env
 
@@ -86,53 +86,53 @@ def env(inputs, outputs, validate = True):
     return Env(inputs, outputs, features = [], consistency_check = validate)
 
 
-class _test_Modes(unittest.TestCase):
-
-    def test_0(self):
-        x, y, z = inputs(build)
-        e = add(add(x, y), z)
-        g = env([x, y, z], [e])
-        assert str(g) == "[Add(Add(x, y), z)]"
-        assert e.data == 0.0
-        
-    def test_1(self):
-        x, y, z = inputs(build_eval)
-        e = add(add(x, y), z)
-        g = env([x, y, z], [e])
-        assert str(g) == "[Add(Add(x, y), z)]"
-        assert e.data == 6.0
-        
-    def test_2(self):
-        x, y, z = inputs(eval)
-        e = add(add(x, y), z)
-        g = env([x, y, z], [e])
-        assert str(g) == "[Add_R]"
-        assert e.data == 6.0
-
-    def test_3(self):
-        x, y, z = inputs(build)
-        e = x + y + z
-        g = env([x, y, z], [e])
-        assert str(g) == "[Add(Add(x, y), z)]"
-        assert e.data == 0.0
-        
-    def test_4(self):
-        x, y, z = inputs(build_eval)
-        e = x + 34.0
-        g = env([x, y, z], [e])
-        assert str(g) == "[Add(x, oignon)]"
-        assert e.data == 35.0
-        
-    def test_5(self):
-        xb, yb, zb = inputs(build)
-        xe, ye, ze = inputs(eval)
-        try:
-            e = xb + ye
-        except TypeError:
-            # Trying to add inputs from different modes is forbidden
-            pass
-        else:
-            raise Exception("Expected an error.")
+# class _test_Modes(unittest.TestCase):
+
+#     def test_0(self):
+#         x, y, z = inputs(build)
+#         e = add(add(x, y), z)
+#         g = env([x, y, z], [e])
+#         assert str(g) == "[Add(Add(x, y), z)]"
+#         assert e.data == 0.0
+        
+#     def test_1(self):
+#         x, y, z = inputs(build_eval)
+#         e = add(add(x, y), z)
+#         g = env([x, y, z], [e])
+#         assert str(g) == "[Add(Add(x, y), z)]"
+#         assert e.data == 6.0
+        
+#     def test_2(self):
+#         x, y, z = inputs(eval)
+#         e = add(add(x, y), z)
+#         g = env([x, y, z], [e])
+#         assert str(g) == "[Add_R]"
+#         assert e.data == 6.0
+
+#     def test_3(self):
+#         x, y, z = inputs(build)
+#         e = x + y + z
+#         g = env([x, y, z], [e])
+#         assert str(g) == "[Add(Add(x, y), z)]"
+#         assert e.data == 0.0
+        
+#     def test_4(self):
+#         x, y, z = inputs(build_eval)
+#         e = x + 34.0
+#         g = env([x, y, z], [e])
+#         assert str(g) == "[Add(x, oignon)]"
+#         assert e.data == 35.0
+        
+#     def test_5(self):
+#         xb, yb, zb = inputs(build)
+#         xe, ye, ze = inputs(eval)
+#         try:
+#             e = xb + ye
+#         except TypeError:
+#             # Trying to add inputs from different modes is forbidden
+#             pass
+#         else:
+#             raise Exception("Expected an error.")
         
 
 if __name__ == '__main__':

gof/_test_op.py

@@ -2,21 +2,19 @@
 import unittest
 from copy import copy
 from op import *
-from result import Result
+from type import Type, Generic
+from graph import Apply, as_result
 
+#from result import Result
 
-class MyResult(Result):
+
+class MyType(Type):
 
     def __init__(self, thingy):
         self.thingy = thingy
-        Result.__init__(self, role = None)
-        self.data = [self.thingy]
 
     def __eq__(self, other):
-        return self.same_properties(other)
-
-    def same_properties(self, other):
-        return isinstance(other, MyResult) and other.thingy == self.thingy
+        return type(other) == type(self) and other.thingy == self.thingy
 
     def __str__(self):
         return str(self.thingy)
@@ -27,32 +25,35 @@ class MyResult(Result):
 
 class MyOp(Op):
 
-    def __init__(self, *inputs):
+    def make_node(self, *inputs):
+        inputs = map(as_result, inputs)
         for input in inputs:
-            if not isinstance(input, MyResult):
+            if not isinstance(input.type, MyType):
                 raise Exception("Error 1")
-        self.inputs = inputs
-        self.outputs = [MyResult(sum([input.thingy for input in inputs]))]
+            outputs = [MyType(sum([input.type.thingy for input in inputs]))()]
+            return Apply(self, inputs, outputs)
+
+MyOp = MyOp()
 
 
 class _test_Op(unittest.TestCase):
 
     # Sanity tests
     def test_sanity_0(self):
-        r1, r2 = MyResult(1), MyResult(2)
-        op = MyOp(r1, r2)
-        assert op.inputs == [r1, r2] # Are the inputs what I provided?
-        assert op.outputs == [MyResult(3)] # Are the outputs what I expect?
-        assert op.outputs[0].owner is op and op.outputs[0].index == 0
-
-    # validate_update
-    def test_validate_update(self):
+        r1, r2 = MyType(1)(), MyType(2)()
+        node = MyOp.make_node(r1, r2)
+        assert [x for x in node.inputs] == [r1, r2] # Are the inputs what I provided?
+        assert [x.type for x in node.outputs] == [MyType(3)] # Are the outputs what I expect?
+        assert node.outputs[0].owner is node and node.outputs[0].index == 0
+
+    # validate
+    def test_validate(self):
         try:
-            MyOp(Result(), MyResult(1)) # MyOp requires MyResult instances
-        except Exception, e:
-            assert str(e) == "Error 1"
-        else:
+            MyOp(Generic()(), MyType(1)()) # MyOp requires MyType instances
             raise Exception("Expected an exception")
+        except Exception, e:
+            if str(e) != "Error 1":
+                raise