renamed Env to FunctionGraph. closes 719

doc/extending/pipeline.txt

@@ -36,32 +36,32 @@ Here is an overview of the various steps that are done with the
 computation graph in the compilation phase:
 
 
-Step 1 - Create an Env
+Step 1 - Create a FunctionGraph
 ^^^^^^^^^^^^^^^^^^^^^^
 
 The subgraph given by the end user is wrapped in a structure called
-*Env*. That structure defines several hooks on adding and
+*FunctionGraph*. That structure defines several hooks on adding and
 removing (pruning) nodes as well as on modifying links between nodes
 (for example, modifying an input of an :ref:`apply` node) (see the
 article about :ref:`libdoc_gof_env` for more information).
 
-Env provides a method to change the input of an Apply node from one
+FunctionGraph provides a method to change the input of an Apply node from one
 Variable to another and a more high-level method to replace a Variable
 with another. This is the structure that :ref:`Optimizers
 <optimization>` work on.
 
 Some relevant :ref:`Features <libdoc_gof_envfeature>` are typically added to the
-Env, namely to prevent any optimization from operating inplace on
+FunctionGraph, namely to prevent any optimization from operating inplace on
 inputs declared as immutable.
 
 
 Step 2 - Execute main Optimizer
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-Once the Env is made, an :term:`optimizer` is produced
+Once the FunctionGraph is made, an :term:`optimizer` is produced
 by the :term:`mode` passed to ``function`` or to the Method/Module's
 ``make`` (the Mode basically has two important fields, ``linker`` and
-``optimizer``). That optimizer is applied on the Env using its
+``optimizer``). That optimizer is applied on the FunctionGraph using its
 optimize() method.
 
 The optimizer is typically obtained through :attr:`optdb`.
@@ -71,7 +71,8 @@ Step 3 - Execute linker to obtain a thunk
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 Once the computation graph is optimized, the :term:`linker` is
-extracted from the Mode. It is then called with the Env as argument to
+extracted from the Mode. It is then called with the FunctionGraph as
+argument to
 produce a ``thunk``, which is a function with no arguments that
 returns nothing. Along with the thunk, one list of input containers (a
 theano.gof.Container is a sort of object that wraps another and does

theano/compile/debugmode.py

@@ -13,7 +13,7 @@ import numpy
 
 import theano
 from theano import gof
-from theano.gof import Env, graph, utils, link, ops_with_inner_function
+from theano.gof import FunctionGraph as Env, graph, utils, link, ops_with_inner_function
 from theano.gof.link import raise_with_op
 from theano.gof.cc import CLinker
 from theano.gof.python25 import all, any, product as itertools_product
@@ -667,7 +667,7 @@ def _optcheck_env(input_specs, output_specs, accept_inplace=False):
 
     inputs, outputs = gof.graph.clone(orig_inputs, orig_outputs)
     equivalence_tracker = _VariableEquivalenceTracker()
-    env = gof.env.Env(inputs, outputs,
+    env = gof.fg.FunctionGraph(inputs, outputs,
             #DestroyHandler is not needed because it is actually installed by an optimization
             # after canonicalization.  This variables in a big speed gain.
             #features=[equivalence_tracker, gof.DestroyHandler(do_imports_on_attach=False)])

theano/compile/function_module.py

@@ -129,7 +129,7 @@ def std_env(input_specs, output_specs, accept_inplace = False):
     orig_outputs = [spec.variable for spec in output_specs] + updates
 
     inputs, outputs = gof.graph.clone(orig_inputs, orig_outputs)
-    env = gof.env.Env(inputs, outputs)
+    env = gof.fg.FunctionGraph(inputs, outputs)
 
     for node in env.nodes:
         if getattr(node.op, 'destroy_map', None):

theano/gof/__init__.py

@@ -5,8 +5,10 @@ from cc import \
 
 import compiledir # adds config vars
 
-from env import \
-    InconsistencyError, MissingInputError, Env
+from fg import \
+    InconsistencyError, MissingInputError, FunctionGraph
+#deprecated alias to support code written with old name
+Env = FunctionGraph
 
 from destroyhandler import \
     DestroyHandler

theano/gof/destroyhandler.py

@@ -10,7 +10,7 @@ import toolbox
 import graph
 from theano.gof.python25 import deque
 
-from env import InconsistencyError
+from fg import InconsistencyError
 
 class ProtocolError(Exception):
     """WRITEME"""

theano/gof/op.py

@@ -21,7 +21,7 @@ from theano import config
 import cc
 import graph
 import utils
-from env import Env
+from fg import FunctionGraph as Env
 
 
 class CLinkerObject(object):

theano/gof/opt.py

@@ -11,7 +11,7 @@ import time
 import numpy
 
 import graph
-from env import InconsistencyError
+from fg import InconsistencyError
 import op
 import utils
 import unify
@@ -598,7 +598,7 @@ def is_same_graph_with_merge(var1, var2, givens=None):
     givens = copied[2]
     # Create Env.
     inputs = theano.gof.graph.inputs(vars)
-    env = theano.gof.env.Env(inputs, vars)
+    env = theano.gof.fg.FunctionGraph(inputs, vars)
     # Perform Variable substitution.
     for to_replace, replace_by in givens.iteritems():
         env.replace(to_replace, replace_by)

theano/gof/tests/test_cc.py

@@ -6,7 +6,8 @@ from theano.gof.cc import *
 from theano.gof.type import Type
 from theano.gof.graph import Variable, Apply, Constant
 from theano.gof.op import Op
-from theano.gof import env
+from theano.gof import fg
+env = fg
 from theano.gof import toolbox
 
 
@@ -171,7 +172,7 @@ def inputs():
 
 
 def Env(inputs, outputs):
-    e = env.Env(inputs, outputs)
+    e = fg.FunctionGraph(inputs, outputs)
     return e
 
 

theano/gof/tests/test_destroyhandler.py

@@ -8,7 +8,7 @@ from theano.gof.op import Op
 from theano.gof.opt import *
 
 from theano.gof import destroyhandler
-from theano.gof.env import Env, InconsistencyError
+from theano.gof.fg import FunctionGraph as Env, InconsistencyError
 from theano.gof.toolbox import ReplaceValidate
 
 from copy import copy

theano/gof/tests/test_opt.py

@@ -3,7 +3,7 @@ from theano.gof.type import Type
 from theano.gof.graph import Variable, Apply, Constant
 from theano.gof.op import Op
 from theano.gof.opt import *
-from theano.gof.env import Env
+from theano.gof.fg import FunctionGraph as Env
 from theano.gof.toolbox import *
 
 

theano/gof/tests/test_toolbox.py

@@ -3,7 +3,7 @@ from theano.gof.graph import Variable, Apply
 from theano.gof.type import Type
 from theano.gof.op import Op
 
-from theano.gof.env import Env, InconsistencyError
+from theano.gof.fg import FunctionGraph as Env, InconsistencyError
 from theano.gof.toolbox import *
 
 

theano/tensor/tests/test_merge.py

@@ -3,7 +3,7 @@ from theano.gof.type import Type
 from theano.gof.graph import Variable, Apply, Constant
 from theano.gof.op import Op
 from theano.gof.opt import *
-from theano.gof.env import Env
+from theano.gof.fg import FunctionGraph as Env
 from theano.gof.toolbox import *
 import theano.tensor.basic as T