From ffebbcd2dee04b8c06e90432618e0e013ac5b7dc Mon Sep 17 00:00:00 2001
From: Alex Xu <alex_y_xu@yahoo.ca>
Date: Sun, 30 Mar 2014 13:42:48 -0400
Subject: unrpyc -> ast2json

---
 ast2json/renpy/ast.py | 1757 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 1757 insertions(+)
 create mode 100644 ast2json/renpy/ast.py

(limited to 'ast2json/renpy/ast.py')

diff --git a/ast2json/renpy/ast.py b/ast2json/renpy/ast.py
new file mode 100644
index 0000000..6fbd58f
--- /dev/null
+++ b/ast2json/renpy/ast.py
@@ -0,0 +1,1757 @@
+# Copyright 2004-2013 Tom Rothamel <pytom@bishoujo.us>
+#
+# 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.
+
+# This file contains the AST for the Ren'Py script language. Each class
+# here corresponds to a statement in the script language.
+
+# NOTE:
+# When updating this file, consider if lint.py or warp.py also need
+# updating.
+
+import renpy
+
+import re
+import time
+import hashlib
+import collections
+
+def next_node(n):
+    """
+    Indicates the next node that should be executed. When a statement
+    can crash, this should be set as early as possible, so that ignore
+    can bring us there.
+    """
+
+    renpy.game.context().next_node = n
+
+class ParameterInfo(object):
+    """
+    This class is used to store information about parameters to a
+    label.
+    """
+    def __init__(self, parameters, positional, extrapos, extrakw):
+
+        # A list of parameter name, default value pairs.
+        self.parameters = parameters
+
+        # A list, giving the positional parameters to this function,
+        # in order.
+        self.positional = positional
+
+        # A variable that takes the extra positional arguments, if
+        # any. None if no such variable exists.
+        self.extrapos = extrapos
+
+        # A variable that takes the extra keyword arguments, if
+        # any. None if no such variable exists.
+        self.extrakw = extrakw
+
+class ArgumentInfo(object):
+
+    def __init__(self, arguments, extrapos, extrakw):
+
+        # A list of (keyword, expression) pairs. If an argument doesn't
+        # have a keyword, it's thought of as positional.
+        self.arguments = arguments
+
+        # An expression giving extra positional arguments being
+        # supplied to this function.
+        self.extrapos = extrapos
+
+        # An expression giving extra keyword arguments that need
+        # to be supplied to this function.
+        self.extrakw = extrakw
+
+
+def __newobj__(cls, *args):
+    return cls.__new__(cls, *args)
+
+# This represents a string containing python code.
+class PyExpr(str):
+
+    __slots__ = [
+        'filename',
+        'linenumber',
+        ]
+
+    def __new__(cls, s, filename, linenumber):
+        self = str.__new__(cls, s)
+        self.filename = filename
+        self.linenumber = linenumber
+        return self
+
+    def __getnewargs__(self):
+        return (str(self), self.filename, self.linenumber) # E1101
+
+class PyCode(object):
+
+    __slots__ = [
+        'source',
+        'location',
+        'mode',
+        'bytecode',
+        'hash',
+        ]
+
+    def __getstate__(self):
+        return (1, self.source, self.location, self.mode)
+
+    def __setstate__(self, state):
+        (_, self.source, self.location, self.mode) = state
+        self.bytecode = None
+
+        if renpy.game.script.record_pycode:
+            renpy.game.script.all_pycode.append(self)
+
+    def __init__(self, source, loc=('<none>', 1), mode='exec'):
+
+        if isinstance(source, PyExpr):
+            loc = (source.filename, source.linenumber, source)
+
+        # The source code.
+        self.source = source
+
+        # The time is necessary so we can disambiguate between Python
+        # blocks on the same line in different script versions.
+        self.location = loc + ( int(time.time()), )
+        self.mode = mode
+
+        # This will be initialized later on, after we are serialized.
+        self.bytecode = None
+
+        if renpy.game.script.record_pycode:
+            renpy.game.script.all_pycode.append(self)
+
+        self.hash = None
+
+    def get_hash(self):
+        try:
+            if self.hash is not None:
+                return self.hash
+        except:
+            pass
+
+        code = self.source
+        if isinstance(code, renpy.python.ast.AST): #@UndefinedVariable
+            code = renpy.python.ast.dump(code) #@UndefinedVariable
+
+        self.hash = chr(renpy.bytecode_version) + hashlib.md5(repr(self.location) + code.encode("utf-8")).digest()
+        return self.hash
+
+
+def chain_block(block, next): #@ReservedAssignment
+    """
+    This is called to chain together all of the nodes in a block. Node
+    n is chained with node n+1, while the last node is chained with
+    next.
+    """
+
+    if not block:
+        return
+
+    for a, b in zip(block, block[1:]):
+        a.chain(b)
+
+    block[-1].chain(next)
+
+
+class Scry(object):
+    """
+    This is used to store information about the future, if we know it. Unlike
+    predict, this tries to only get things we _know_ will happen.
+    """
+
+    # By default, all attributes are None.
+    def __getattr__(self, name):
+        return None
+
+    def __next__(self): #@ReservedAssignment
+        if self._next is None:
+            return None
+        else:
+            return self._next.scry()
+
+
+class Node(object):
+    """
+    A node in the abstract syntax tree of the program.
+
+    @ivar name: The name of this node.
+
+    @ivar filename: The filename where this node comes from.
+    @ivar linenumber: The line number of the line on which this node is defined.
+    """
+
+    __slots__ = [
+        'name',
+        'filename',
+        'linenumber',
+        'next',
+        ]
+
+    # True if this node is translatable, false otherwise. (This can be set on
+    # the class or the instance.)
+    translatable = False
+
+    # Called to set the state of a Node, when necessary.
+    def __setstate__(self, state):
+        for k, v in state[1].items():
+            try:
+                setattr(self, k, v)
+            except AttributeError:
+                pass
+
+
+    def __init__(self, loc):
+        """
+        Initializes this Node object.
+
+        @param loc: A (filename, physical line number) tuple giving the
+        logical line on which this Node node starts.
+        """
+
+        self.filename, self.linenumber  = loc
+        self.name = None
+        self.next = None
+
+    def diff_info(self):
+        """
+        Returns a tuple of diff info about ourself. This is used to
+        compare Nodes to see if they should be considered the same node. The
+        tuple returned must be hashable.
+        """
+
+        return ( id(self), )
+
+    def get_children(self):
+        """
+        Returns a list of all of the nodes that are children of this
+        node. (That is, all of the nodes in any block associated with
+        this node.)
+        """
+
+        return [ ]
+
+    def get_init(self):
+        """
+        Returns a node that should be run at init time (that is, before
+        the normal start of the script.), or None if this node doesn't
+        care to suggest one.
+
+        (The only class that needs to override this is Init.)
+        """
+
+        return None
+
+    def chain(self, next): #@ReservedAssignment
+        """
+        This is called with the Node node that should be followed after
+        executing this node, and all nodes that this node
+        executes. (For example, if this node is a block label, the
+        next is the node that should be executed after all nodes in
+        the block.)
+        """
+
+        self.next = next
+
+    def execute(self):
+        """
+        Causes this node to execute, and any action it entails to be
+        performed. The node should call next_node with the node to
+        be executed after this one.
+        """
+
+        assert False, "Node subclass forgot to define execute."
+
+    def early_execute(self):
+        """
+        Called when the module is loaded.
+        """
+
+    def predict(self):
+        """
+        This is called to predictively load images from this node.  It
+        should cause renpy.display.predict.image and
+        renpy.display.predict.screen to be called as necessary.
+        """
+
+        if self.__next__:
+            return [ self.__next__ ]
+        else:
+            return [ ]
+
+    def scry(self):
+        """
+        Called to return an object with some general, user-definable information
+        about the future.
+        """
+
+        rv = Scry()
+        rv._next = self.__next__ # W0201
+        return rv
+
+    def restructure(self, callback):
+        """
+        Called to restructure the AST.
+
+        When this method is called, callback is called once for each child
+        block of the node. The block, a list, can be updated by the callback
+        using slice assignment to the list.
+        """
+
+        # Does nothing for nodes that do not contain child blocks.
+        return
+
+    def get_code(self, dialogue_filter=None):
+        """
+        Returns the canonical form of the code corresponding to this statement.
+        This only needs to be defined if the statement is translatable.
+
+        `filter`
+            If present, a filter that should be applied to human-readable
+            text in the statement.
+        """
+
+        raise Exception("Not Implemented")
+
+def say_menu_with(expression, callback):
+    """
+    This handles the with clause of a say or menu statement.
+    """
+
+    if expression is not None:
+        what = renpy.python.py_eval(expression)
+    elif renpy.store.default_transition and renpy.game.preferences.transitions == 2:
+        what = renpy.store.default_transition
+    else:
+        return
+
+    if not what:
+        return
+
+    if renpy.game.preferences.transitions:
+        # renpy.game.interface.set_transition(what)
+        callback(what)
+
+class Say(Node):
+
+    __slots__ = [
+        'who',
+        'who_fast',
+        'what',
+        'with_',
+        'interact',
+        'attributes',
+        ]
+
+    def diff_info(self):
+        return (Say, self.who, self.what)
+
+    def __setstate__(self, state):
+        self.attributes = None
+        self.interact = True
+        Node.__setstate__(self, state)
+
+    def __init__(self, loc, who, what, with_, interact=True, attributes=None):
+
+        super(Say, self).__init__(loc)
+
+        if who is not None:
+            self.who = who.strip()
+
+            if re.match(r'[a-zA-Z_]\w*$', self.who):
+                self.who_fast = True
+            else:
+                self.who_fast = False
+        else:
+            self.who = None
+            self.who_fast = False
+
+        self.what = what
+        self.with_ = with_
+        self.interact = interact
+
+        # A tuple of attributes that are applied to the character that's
+        # speaking, or None to disable this behavior.
+        self.attributes = attributes
+
+    def get_code(self, dialogue_filter=None):
+        rv = [ ]
+
+        if self.who:
+            rv.append(self.who)
+
+        if self.attributes is not None:
+            rv.extend(self.attributes)
+
+        what = self.what
+        if dialogue_filter is not None:
+            what = dialogue_filter(what)
+
+        rv.append(renpy.translation.encode_say_string(what))
+
+        if not self.interact:
+            rv.append("nointeract")
+
+        if self.with_:
+            rv.append("with")
+            rv.append(self.with_)
+
+        return " ".join(rv)
+
+    def execute(self):
+
+        next_node(self.__next__)
+
+        try:
+
+            renpy.exports.say_attributes = self.attributes
+
+            if self.who is not None:
+                if self.who_fast:
+                    who = getattr(renpy.store, self.who, None)
+                    if who is None:
+                        raise Exception("Sayer '%s' is not defined." % self.who.encode("utf-8"))
+                else:
+                    who = renpy.python.py_eval(self.who)
+            else:
+                who = None
+
+            if not (
+                (who is None) or
+                isinstance(who, collections.Callable) or
+                isinstance(who, str) ):
+
+                raise Exception("Sayer %s is not a function or string." % self.who.encode("utf-8"))
+
+            what = self.what
+            if renpy.config.say_menu_text_filter:
+                what = renpy.config.say_menu_text_filter(what) # E1102
+
+            if getattr(who, "record_say", True):
+                renpy.store._last_say_who = self.who
+                renpy.store._last_say_what = what
+
+            say_menu_with(self.with_, renpy.game.interface.set_transition)
+            renpy.exports.say(who, what, interact=self.interact)
+
+        finally:
+            renpy.exports.say_attributes = None
+
+
+    def predict(self):
+
+        old_attributes = renpy.exports.say_attributes
+
+        try:
+
+            renpy.exports.say_attributes = self.attributes
+
+            if self.who is not None:
+                if self.who_fast:
+                    who = getattr(renpy.store, self.who)
+                else:
+                    who = renpy.python.py_eval(self.who)
+            else:
+                who = None
+
+            def predict_with(trans):
+                renpy.display.predict.displayable(trans(old_widget=None, new_widget=None))
+
+            say_menu_with(self.with_, predict_with)
+
+            what = self.what
+            if renpy.config.say_menu_text_filter:
+                what = renpy.config.say_menu_text_filter(what)
+
+            renpy.exports.predict_say(who, what)
+
+        finally:
+            renpy.exports.say_attributes = old_attributes
+
+        return [ self.__next__ ]
+
+    def scry(self):
+        rv = Node.scry(self)
+
+        if self.who is not None:
+            if self.who_fast:
+                who = getattr(renpy.store, self.who)
+            else:
+                who = renpy.python.py_eval(self.who)
+        else:
+            who = None
+
+        if self.interact:
+            renpy.exports.scry_say(who, rv)
+        else:
+            rv.interacts = False
+
+        return rv
+
+# Copy the descriptor.
+setattr(Say, "with", Say.with_) # E1101
+
+class Init(Node):
+
+    __slots__ = [
+        'block',
+        'priority',
+        ]
+
+    def __init__(self, loc, block, priority):
+        super(Init, self).__init__(loc)
+
+        self.block = block
+        self.priority = priority
+
+
+    def get_children(self):
+        return self.block
+
+    def get_init(self):
+        return self.priority, self.block[0]
+
+    # We handle chaining specially. We want to chain together the nodes in
+    # the block, but we want that chain to end in None, and we also want
+    # this node to just continue on to the next node in normal execution.
+    def chain(self, next): #@ReservedAssignment
+        self.next = next
+
+        chain_block(self.block, None)
+
+    def execute(self):
+        next_node(self.__next__)
+
+    def restructure(self, callback):
+        callback(self.block)
+
+def apply_arguments(params, args, kwargs):
+    """
+    Applies arguments to parameters to update scope.
+
+    `scope`
+        A dict.
+
+    `params`
+        The parameters object.
+
+    `args`, `kwargs`
+        Positional and keyword arguments.
+    """
+
+    values = { }
+    rv = { }
+
+    if args is None:
+        args = ()
+
+    if kwargs is None:
+        kwargs = { }
+
+    if params is None:
+        if args or kwargs:
+            raise Exception("Arguments supplied, but parameter list not present")
+        else:
+            return rv
+
+    for name, value in zip(params.positional, args):
+        if name in values:
+            raise Exception("Parameter %s has two values." % name)
+
+        values[name] = value
+
+    extrapos = tuple(args[len(params.positional):])
+
+    for name, value in kwargs.items():
+        if name in values:
+            raise Exception("Parameter %s has two values." % name)
+
+        values[name] = value
+
+    for name, default in params.parameters:
+
+        if name not in values:
+            if default is None:
+                raise Exception("Required parameter %s has no value." % name)
+            else:
+                rv[name] = renpy.python.py_eval(default)
+
+        else:
+            rv[name] = values[name]
+            del values[name]
+
+    # Now, values has the left-over keyword arguments, and extrapos
+    # has the left-over positional arguments.
+
+    if params.extrapos:
+        rv[params.extrapos] = extrapos
+    elif extrapos:
+        raise Exception("Too many arguments in call (expected %d, got %d)." % (len(params.positional), len(args)))
+
+    if params.extrakw:
+        rv[params.extrakw] = values
+    else:
+        if values:
+            raise Exception("Unknown keyword arguments: %s" % ( ", ".join(list(values.keys()))))
+
+    return rv
+
+class Label(Node):
+
+    __slots__ = [
+        'name',
+        'parameters',
+        'block',
+        'hide',
+        ]
+
+    def __setstate__(self, state):
+        self.parameters = None
+        self.hide = False
+        Node.__setstate__(self, state)
+
+    def __init__(self, loc, name, block, parameters, hide=False):
+        """
+        Constructs a new Label node.
+
+        @param name: The name of this label.
+        @param block: A (potentially empty) list of nodes making up the
+        block associated with this label.
+        """
+
+        super(Label, self).__init__(loc)
+
+        self.name = name
+        self.block = block
+        self.parameters = parameters
+        self.hide = hide
+
+    def diff_info(self):
+        return (Label, self.name)
+
+    def get_children(self):
+        return self.block
+
+    def chain(self, next): #@ReservedAssignment
+
+        if self.block:
+            self.next = self.block[0]
+            chain_block(self.block, next)
+        else:
+            self.next = next
+
+    def execute(self):
+        next_node(self.__next__)
+
+        renpy.game.context().mark_seen()
+
+        values = apply_arguments(self.parameters, renpy.store._args, renpy.store._kwargs)
+
+        for k, v in values.items():
+            renpy.exports.dynamic(k)
+            setattr(renpy.store, k, v)
+
+        renpy.store._args = None
+        renpy.store._kwargs = None
+
+        if renpy.config.label_callback:
+            renpy.config.label_callback(self.name, renpy.game.context().last_abnormal)
+
+    def restructure(self, callback):
+        callback(self.block)
+
+
+class Python(Node):
+
+    __slots__ = [
+        'hide',
+        'code',
+        'store',
+        ]
+
+    def __setstate__(self, state):
+        self.store = "store"
+        super(Python, self).__setstate__(state)
+
+    def __init__(self, loc, python_code, hide=False, store="store"):
+        """
+        @param code: A PyCode object.
+
+        @param hide: If True, the code will be executed with its
+        own local dictionary.
+        """
+
+        super(Python, self).__init__(loc)
+
+        self.hide = hide
+        self.code = PyCode(python_code, loc=loc, mode='exec')
+        self.store = store
+
+    def diff_info(self):
+        return (Python, self.code.source)
+
+    def early_execute(self):
+        renpy.python.create_store(self.store)
+
+    def execute(self):
+        next_node(self.__next__)
+
+        try:
+            renpy.python.py_exec_bytecode(self.code.bytecode, self.hide, store=self.store)
+        finally:
+
+            if not renpy.game.context().init_phase:
+                for i in renpy.config.python_callbacks:
+                    i()
+
+    def scry(self):
+        rv = Node.scry(self)
+        rv.interacts = True
+        return rv
+
+class EarlyPython(Node):
+
+    __slots__ = [
+        'hide',
+        'code',
+        'store',
+        ]
+
+    def __setstate__(self, state):
+        self.store = "store"
+        super(EarlyPython, self).__setstate__(state)
+
+    def __init__(self, loc, python_code, hide=False, store="store"):
+        """
+        @param code: A PyCode object.
+
+        @param hide: If True, the code will be executed with its
+        own local dictionary.
+        """
+
+        super(EarlyPython, self).__init__(loc)
+
+        self.hide = hide
+        self.code = PyCode(python_code, loc=loc, mode='exec')
+        self.store = store
+
+    def diff_info(self):
+        return (EarlyPython, self.code.source)
+
+    def execute(self):
+        next_node(self.__next__)
+
+    def early_execute(self):
+        renpy.python.create_store(self.store)
+
+        if self.code.bytecode:
+            renpy.python.py_exec_bytecode(self.code.bytecode, self.hide, store=self.store)
+
+class Image(Node):
+
+    __slots__ = [
+        'imgname',
+        'code',
+        'atl',
+        ]
+
+    def __init__(self, loc, name, expr=None, atl=None):
+        """
+        @param name: The name of the image being defined.
+
+        @param expr: An expression yielding a Displayable that is
+        assigned to the image.
+        """
+
+        super(Image, self).__init__(loc)
+
+        self.imgname = name
+
+        if expr:
+            self.code = PyCode(expr, loc=loc, mode='eval')
+            self.atl = None
+        else:
+            self.code = None
+            self.atl = atl
+
+    def diff_info(self):
+        return (Image, tuple(self.imgname))
+
+    def execute(self):
+
+        # Note: We should always check that self.code is None before
+        # accessing self.atl, as self.atl may not always exist.
+
+        next_node(self.__next__)
+
+        if self.code is not None:
+            img = renpy.python.py_eval_bytecode(self.code.bytecode)
+        else:
+            img = renpy.display.motion.ATLTransform(self.atl)
+
+        renpy.exports.image(self.imgname, img)
+
+
+
+class Transform(Node):
+
+    __slots__ = [
+
+        # The name of the transform.
+        'varname',
+
+        # The block of ATL associated with the transform.
+        'atl',
+
+        # The parameters associated with the transform, if any.
+        'parameters',
+        ]
+
+    default_parameters = ParameterInfo([ ], [ ], None, None)
+
+    def __init__(self, loc, name, atl=None, parameters=default_parameters):
+
+        super(Transform, self).__init__(loc)
+
+        self.varname = name
+        self.atl = atl
+        self.parameters = parameters
+
+    def diff_info(self):
+        return (Transform, self.varname)
+
+    def execute(self):
+
+        next_node(self.__next__)
+
+        parameters = getattr(self, "parameters", None)
+
+        if parameters is None:
+            parameters = Transform.default_parameters
+
+        trans = renpy.display.motion.ATLTransform(self.atl, parameters=parameters)
+        renpy.dump.transforms.append((self.varname, self.filename, self.linenumber))
+        setattr(renpy.store, self.varname, trans)
+
+
+def predict_imspec(imspec, scene=False, atl=None):
+    """
+    Call this to use the given callback to predict the image named
+    in imspec.
+    """
+
+    if len(imspec) == 7:
+        name, expression, tag, _at_list, layer, _zorder, _behind = imspec
+
+    elif len(imspec) == 6:
+        name, expression, tag, _at_list, layer, _zorder = imspec
+
+    elif len(imspec) == 3:
+        name, _at_list, layer = imspec
+
+
+    if expression:
+        try:
+            img = renpy.python.py_eval(expression)
+            img = renpy.easy.displayable(img)
+        except:
+            return
+
+    else:
+        img = renpy.display.image.images.get(name, None)
+        if img is None:
+            return
+
+    full_name = name
+    if tag:
+        full_name = (tag,) + full_name[1:]
+
+    if scene:
+        renpy.game.context().images.predict_scene(layer)
+
+    renpy.game.context().images.predict_show(tag or name, layer)
+
+    if atl is not None:
+        try:
+            img = renpy.display.motion.ATLTransform(atl, child=img)
+        except:
+            import traceback
+            traceback.print_exc()
+
+    renpy.display.predict.displayable(img)
+
+
+
+def show_imspec(imspec, atl=None):
+
+    if len(imspec) == 7:
+        name, expression, tag, at_list, layer, zorder, behind = imspec
+
+    elif len(imspec) == 6:
+        name, expression, tag, at_list, layer, zorder = imspec
+        behind = [ ]
+
+    elif len(imspec) == 3:
+        name, at_list, layer = imspec
+        expression = None
+        tag = None
+        zorder = None
+        behind = [ ]
+
+    if zorder is not None:
+        zorder = renpy.python.py_eval(zorder)
+    else:
+        zorder = 0
+
+    if expression is not None:
+        expression = renpy.python.py_eval(expression)
+        expression = renpy.easy.displayable(expression)
+
+    at_list = [ renpy.python.py_eval(i) for i in at_list ]
+
+    renpy.config.show(name,
+                      at_list=at_list,
+                      layer=layer,
+                      what=expression,
+                      zorder=zorder,
+                      tag=tag,
+                      behind=behind,
+                      atl=atl)
+
+class Show(Node):
+
+    __slots__ = [
+        'imspec',
+        'atl',
+        ]
+
+    def __init__(self, loc, imspec, atl=None):
+        """
+        @param imspec: A triple consisting of an image name (itself a
+        tuple of strings), a list of at expressions, and a layer.
+        """
+
+        super(Show, self).__init__(loc)
+
+        self.imspec = imspec
+        self.atl = atl
+
+    def diff_info(self):
+        return (Show, tuple(self.imspec[0]))
+
+    def execute(self):
+        next_node(self.__next__)
+
+        show_imspec(self.imspec, atl=getattr(self, "atl", None))
+
+    def predict(self):
+        predict_imspec(self.imspec, atl=getattr(self, "atl", None))
+        return [ self.__next__ ]
+
+
+class Scene(Node):
+
+    __slots__ = [
+        'imspec',
+        'layer',
+        'atl',
+        ]
+
+    def __init__(self, loc, imgspec, layer, atl=None):
+        """
+        @param imspec: A triple consisting of an image name (itself a
+        tuple of strings), a list of at expressions, and a layer, or
+        None to not have this scene statement also display an image.
+        """
+
+        super(Scene, self).__init__(loc)
+
+        self.imspec = imgspec
+        self.layer = layer
+        self.atl = atl
+
+    def diff_info(self):
+
+        if self.imspec:
+            data = tuple(self.imspec[0])
+        else:
+            data = None
+
+        return (Scene, data)
+
+    def execute(self):
+
+        next_node(self.__next__)
+
+        renpy.config.scene(self.layer)
+
+        if self.imspec:
+            show_imspec(self.imspec, atl=getattr(self, "atl", None))
+
+    def predict(self):
+
+        if self.imspec:
+            predict_imspec(self.imspec, atl=getattr(self, "atl", None), scene=True)
+
+        return [ self.__next__ ]
+
+
+class Hide(Node):
+
+    __slots__ = [
+        'imspec',
+        ]
+
+    def __init__(self, loc, imgspec):
+        """
+        @param imspec: A triple consisting of an image name (itself a
+        tuple of strings), a list of at expressions, and a list of
+        with expressions.
+        """
+
+        super(Hide, self).__init__(loc)
+
+        self.imspec = imgspec
+
+    def diff_info(self):
+        return (Hide, tuple(self.imspec[0]))
+
+    def predict(self):
+
+        if len(self.imspec) == 3:
+            name, _at_list, layer = self.imspec
+            tag = None
+            _expression = None
+            _zorder = None
+            _behind = None
+        elif len(self.imspec) == 6:
+            name, _expression, tag, _at_list, layer, _zorder = self.imspec
+            _behind = None
+        elif len(self.imspec) == 7:
+            name, _expression, tag, _at_list, layer, _zorder, _behind = self.imspec
+
+
+        if tag is None:
+            tag = name[0]
+
+        renpy.game.context().images.predict_hide(tag, layer)
+
+        return [ self.__next__ ]
+
+    def execute(self):
+
+        next_node(self.__next__)
+
+        if len(self.imspec) == 3:
+            name, _at_list, layer = self.imspec
+            _expression = None
+            tag = None
+            _zorder = 0
+        elif len(self.imspec) == 6:
+            name, _expression, tag, _at_list, layer, _zorder = self.imspec
+        elif len(self.imspec) == 7:
+            name, _expression, tag, _at_list, layer, _zorder, _behind = self.imspec
+
+        renpy.config.hide(tag or name, layer)
+
+
+class With(Node):
+
+    __slots__ = [
+        'expr',
+        'paired',
+        ]
+
+    def __setstate__(self, state):
+        self.paired = None
+        Node.__setstate__(self, state)
+
+    def __init__(self, loc, expr, paired=None):
+        """
+        @param expr: An expression giving a transition or None.
+        """
+
+        super(With, self).__init__(loc)
+        self.expr = expr
+        self.paired = paired
+
+    def diff_info(self):
+        return (With, self.expr)
+
+    def execute(self):
+
+        next_node(self.__next__)
+
+        trans = renpy.python.py_eval(self.expr)
+
+        if self.paired is not None:
+            paired = renpy.python.py_eval(self.paired)
+        else:
+            paired = None
+
+        renpy.exports.with_statement(trans, paired)
+
+    def predict(self):
+
+        try:
+            trans = renpy.python.py_eval(self.expr)
+
+            if trans:
+                renpy.display.predict.displayable(trans(old_widget=None, new_widget=None))
+
+        except:
+            pass
+
+
+        return [ self.__next__ ]
+
+
+class Call(Node):
+
+    __slots__ = [
+        'label',
+        'arguments',
+        'expression',
+        ]
+
+    def __setstate__(self, state):
+        self.arguments = None
+        Node.__setstate__(self, state)
+
+    def __init__(self, loc, label, expression, arguments):
+
+        super(Call, self).__init__(loc)
+        self.label = label
+        self.expression = expression
+        self.arguments = arguments
+
+    def diff_info(self):
+        return (Call, self.label, self.expression)
+
+    def execute(self):
+
+        label = self.label
+        if self.expression:
+            label = renpy.python.py_eval(label)
+
+        rv = renpy.game.context().call(label, return_site=self.next.name)
+        next_node(rv)
+        renpy.game.context().abnormal = True
+
+        if self.arguments:
+
+            args = [ ]
+            kwargs = renpy.python.RevertableDict()
+
+            for name, expr in self.arguments.arguments:
+
+                value = renpy.python.py_eval(expr)
+
+                if name is None:
+                    args.append(value)
+                else:
+                    if name in kwargs:
+                        raise Exception("The argument named %s appears twice." % name)
+
+                    kwargs[name] = value
+
+            if self.arguments.extrapos:
+                args.extend(renpy.python.py_eval(self.arguments.extrapos))
+
+            if self.arguments.extrakw:
+                for name, value in renpy.python.py_eval(self.arguments.extrakw).items():
+                    if name in kwargs:
+                        raise Exception("The argument named %s appears twice." % name)
+
+                    kwargs[name] = value
+
+
+            renpy.store._args = tuple(args)
+            renpy.store._kwargs = kwargs
+
+    def predict(self):
+        if self.expression:
+            return [ ]
+        else:
+            return [ renpy.game.script.lookup(self.label) ]
+
+    def scry(self):
+        rv = Node.scry(self)
+        rv._next = None
+        return rv
+
+
+class Return(Node):
+
+    __slots__ = [ 'expression']
+
+    def __setstate__(self, state):
+        self.expression = None
+        Node.__setstate__(self, state)
+
+    def __init__(self, loc, expression):
+        super(Return, self).__init__(loc)
+        self.expression = expression
+
+    def diff_info(self):
+        return (Return, )
+
+    # We don't care what the next node is.
+    def chain(self, next): #@ReservedAssignment
+        self.next = None
+        return
+
+    def execute(self):
+
+        if self.expression:
+            renpy.store._return = renpy.python.py_eval(self.expression)
+        else:
+            renpy.store._return = None
+
+        renpy.game.context().pop_dynamic()
+
+        next_node(renpy.game.context().lookup_return(pop=True))
+
+    def predict(self):
+        site = renpy.game.context().lookup_return(pop=False)
+        if site:
+            return [ site ]
+        else:
+            return [ ]
+
+    def scry(self):
+        rv = Node.scry(self)
+        rv._next = None
+        return rv
+
+
+class Menu(Node):
+
+    __slots__ = [
+        'items',
+        'set',
+        'with_',
+        ]
+
+    def __init__(self, loc, items, set, with_): #@ReservedAssignment
+        super(Menu, self).__init__(loc)
+
+        self.items = items
+        self.set = set
+        self.with_ = with_
+
+    def diff_info(self):
+        return (Menu,)
+
+    def get_children(self):
+        rv = [ ]
+
+        for _label, _condition, block in self.items:
+            if block:
+                rv.extend(block)
+
+        return rv
+
+    # Blocks of statements in a choice continue after the menu.
+    def chain(self, next): #@ReservedAssignment
+
+        self.next = next
+
+        for (_label, _condition, block) in self.items:
+            if block:
+                chain_block(block, next)
+
+    def execute(self):
+
+        next_node(self.__next__)
+
+        choices = [ ]
+        narration = [ ]
+
+        for i, (label, condition, block) in enumerate(self.items):
+
+            if renpy.config.say_menu_text_filter:
+                label = renpy.config.say_menu_text_filter(label)
+
+            if block is None:
+                if renpy.config.narrator_menu and label:
+                    narration.append(label)
+                else:
+                    choices.append((label, condition, None))
+            else:
+                choices.append((label, condition, i))
+                next_node(block[0])
+
+        if narration:
+            renpy.exports.say(None, "\n".join(narration), interact=False)
+
+        say_menu_with(self.with_, renpy.game.interface.set_transition)
+        choice = renpy.exports.menu(choices, self.set)
+
+        if choice is not None:
+            next_node(self.items[choice][2][0])
+        else:
+            next_node(self.__next__)
+
+
+    def predict(self):
+        rv = [ ]
+
+        def predict_with(trans):
+            renpy.display.predict.displayable(trans(old_widget=None, new_widget=None))
+
+        say_menu_with(self.with_, predict_with)
+
+        renpy.store.predict_menu()
+
+        for _label, _condition, block in self.items:
+            if block:
+                rv.append(block[0])
+
+        return rv
+
+    def scry(self):
+        rv = Node.scry(self)
+        rv._next = None
+        rv.interacts = True
+        return rv
+
+    def restructure(self, callback):
+        for _label, _condition, block in self.items:
+            if block is not None:
+                callback(block)
+
+setattr(Menu, "with", Menu.with_) # E1101
+
+
+# Goto is considered harmful. So we decided to name it "jump"
+# instead.
+class Jump(Node):
+
+    __slots__ = [
+        'target',
+        'expression',
+        ]
+
+    def  __init__(self, loc, target, expression):
+        super(Jump, self).__init__(loc)
+
+        self.target = target
+        self.expression = expression
+
+    def diff_info(self):
+        return (Jump, self.target, self.expression)
+
+    # We don't care what our next node is.
+    def chain(self, next): #@ReservedAssignment
+        self.next = None
+        return
+
+    def execute(self):
+
+        target = self.target
+        if self.expression:
+            target = renpy.python.py_eval(target)
+
+        rv = renpy.game.script.lookup(target)
+        renpy.game.context().abnormal = True
+
+        next_node(rv)
+
+    def predict(self):
+
+        if self.expression:
+            return [ ]
+        else:
+            return [ renpy.game.script.lookup(self.target) ]
+
+    def scry(self):
+        rv = Node.scry(self)
+        if self.expression:
+            rv._next = None
+        else:
+            rv._next = renpy.game.script.lookup(self.target)
+
+        return rv
+
+
+# GNDN
+class Pass(Node):
+
+    __slots__ = [ ]
+
+    def diff_info(self):
+        return (Pass,)
+
+    def execute(self):
+        next_node(self.__next__)
+
+
+class While(Node):
+
+    __slots__ = [
+        'condition',
+        'block',
+        ]
+
+    def __init__(self, loc, condition, block):
+        super(While, self).__init__(loc)
+
+        self.condition = condition
+        self.block = block
+
+    def diff_info(self):
+        return (While, self.condition)
+
+    def get_children(self):
+        return self.block
+
+    def chain(self, next): #@ReservedAssignment
+        self.next = next
+        chain_block(self.block, self)
+
+    def execute(self):
+
+        next_node(self.__next__)
+
+        if renpy.python.py_eval(self.condition):
+            next_node(self.block[0])
+
+    def predict(self):
+        return [ self.block[0], self.__next__ ]
+
+    def scry(self):
+        rv = Node.scry(self)
+        rv._next = None
+        return rv
+
+    def restructure(self, callback):
+        callback(self.block)
+
+class If(Node):
+
+    __slots__ = [ 'entries' ]
+
+    def __init__(self, loc, entries):
+        """
+        @param entries: A list of (condition, block) tuples.
+        """
+
+        super(If, self).__init__(loc)
+
+        self.entries = entries
+
+    def diff_info(self):
+        return (If,)
+
+    def get_children(self):
+        rv = [ ]
+
+        for _condition, block in self.entries:
+            rv.extend(block)
+
+        return rv
+
+    def chain(self, next): #@ReservedAssignment
+        self.next = next
+
+        for _condition, block in self.entries:
+            chain_block(block, next)
+
+    def execute(self):
+
+        next_node(self.__next__)
+
+        for condition, block in self.entries:
+            if renpy.python.py_eval(condition):
+                next_node(block[0])
+                return
+
+    def predict(self):
+
+        return [ block[0] for _condition, block in self.entries ] + \
+               [ self.__next__ ]
+
+    def scry(self):
+        rv = Node.scry(self)
+        rv._next = None
+        return rv
+
+    def restructure(self, callback):
+        for _condition, block in self.entries:
+            callback(block)
+
+class UserStatement(Node):
+
+    __slots__ = [
+        'line',
+        'parsed',
+        'block',
+        'translatable' ]
+
+    def __setstate__(self, state):
+        self.block = [ ]
+        self.translatable = False
+        Node.__setstate__(self, state)
+
+    def __init__(self, loc, line, block):
+
+        super(UserStatement, self).__init__(loc)
+        self.line = line
+        self.block = block
+        self.parsed = None
+
+        # Do not store the parse quite yet.
+        _parse_info = renpy.statements.parse(self, self.line, self.block)
+
+    def diff_info(self):
+        return (UserStatement, self.line)
+
+    def execute(self):
+        next_node(self.get_next())
+
+        self.call("execute")
+
+    def predict(self):
+        self.call("predict")
+        return [ self.get_next() ]
+
+    def call(self, method, *args, **kwargs):
+
+        parsed = self.parsed
+        if parsed is None:
+            parsed = renpy.statements.parse(self, self.line, self.block)
+            self.parsed = parsed
+
+        renpy.statements.call(method, parsed, *args, **kwargs)
+
+    def get_next(self):
+        rv = self.call("next")
+        if rv is not None:
+            return renpy.game.script.lookup(rv)
+        else:
+            return self.__next__
+
+    def scry(self):
+        rv = Node.scry(self)
+        rv._next = self.get_next()
+        self.call("scry", rv)
+        return rv
+
+    def get_code(self, dialogue_filter=None):
+        return self.line
+
+
+class Define(Node):
+
+    __slots__ = [
+        'varname',
+        'code',
+        ]
+
+    def __init__(self, loc, name, expr):
+        """
+        @param name: The name of the image being defined.
+
+        @param expr: An expression yielding a Displayable that is
+        assigned to the image.
+        """
+
+        super(Define, self).__init__(loc)
+
+        self.varname = name
+        self.code = PyCode(expr, loc=loc, mode='eval')
+
+    def diff_info(self):
+        return (Define, tuple(self.varname))
+
+    def execute(self):
+
+        next_node(self.__next__)
+
+        value = renpy.python.py_eval_bytecode(self.code.bytecode)
+        renpy.dump.definitions.append((self.varname, self.filename, self.linenumber))
+        setattr(renpy.store, self.varname, value)
+
+
+class Screen(Node):
+
+    __slots__ = [
+        'screen',
+        ]
+
+    def __init__(self, loc, screen):
+        """
+        @param name: The name of the image being defined.
+
+        @param expr: An expression yielding a Displayable that is
+        assigned to the image.
+        """
+
+        super(Screen, self).__init__(loc)
+
+        self.screen = screen
+
+    def diff_info(self):
+        return (Screen, self.screen.name)
+
+    def execute(self):
+        next_node(self.__next__)
+        self.screen.define()
+        renpy.dump.screens.append((self.screen.name, self.filename, self.linenumber))
+
+
+################################################################################
+# Translations
+################################################################################
+
+class Translate(Node):
+    """
+    A translation block, produced either by explicit translation statements
+    or implicit translation blocs.
+
+    If language is None, when executed this transfers control to the translate
+    statement in the current language, if any, and otherwise runs the block.
+    If language is not None, causes an error to occur if control reaches this
+    statement.
+
+    When control normally leaves a translate statement, in any language, it
+    goes to the end of the translate statement in the None language.
+    """
+
+    __slots__ = [
+        "identifier",
+        "language",
+        "block",
+        ]
+
+    def __init__(self, loc, identifier, language, block):
+        super(Translate, self).__init__(loc)
+
+        self.identifier = identifier
+        self.language = language
+        self.block = block
+
+    def diff_info(self):
+        return (Translate, self.identifier, self.language)
+
+    def chain(self, next): #@ReservedAssignment
+        self.next = next
+        chain_block(self.block, next)
+
+    def execute(self):
+
+        if self.language is not None:
+            next_node(self.__next__)
+            raise Exception("Translation nodes cannot be run directly.")
+
+        next_node(renpy.game.script.translator.lookup_translate(self.identifier))
+        renpy.game.context().translate_identifier = self.identifier
+
+    def predict(self):
+        node = renpy.game.script.translator.lookup_translate(self.identifier)
+        return [ node ]
+
+    def scry(self):
+        rv = Scry()
+        rv._next = renpy.game.script.translator.lookup_translate(self.identifier)
+        return rv
+
+    def get_children(self):
+        return self.block
+
+    def restructure(self, callback):
+        return callback(self.block)
+
+
+class EndTranslate(Node):
+    """
+    A node added implicitly after each translate block. It's responsible for
+    resetting the translation identifier.
+    """
+
+    def __init__(self, loc):
+        super(EndTranslate, self).__init__(loc)
+
+    def diff_info(self):
+        return (EndTranslate,)
+
+    def execute(self):
+        next_node(self.__next__)
+        renpy.game.context().translate_identifier = None
+
+
+class TranslateString(Node):
+    """
+    A node used for translated strings.
+    """
+
+    __slots__ = [
+        "language",
+        "old",
+        "new"
+        ]
+
+    def __init__(self, loc, language, old, new):
+        super(TranslateString, self).__init__(loc)
+        self.language = language
+        self.old = old
+        self.new = new
+
+    def diff_info(self):
+        return (TranslateString,)
+
+    def execute(self):
+        next_node(self.__next__)
+        renpy.translation.add_string_translation(self.language, self.old, self.new)
+
+class TranslatePython(Node):
+
+    __slots__ = [
+        'language',
+        'code',
+        ]
+
+    def __init__(self, loc, language, python_code):
+        """
+        @param code: A PyCode object.
+
+        @param hide: If True, the code will be executed with its
+        own local dictionary.
+        """
+
+        super(TranslatePython, self).__init__(loc)
+
+        self.language = language
+        self.code = PyCode(python_code, loc=loc, mode='exec')
+
+    def diff_info(self):
+        return (TranslatePython, self.code.source)
+
+    def execute(self):
+        next_node(self.__next__)
+
+    # def early_execute(self):
+    #    renpy.python.create_store(self.store)
+    #    renpy.python.py_exec_bytecode(self.code.bytecode, self.hide, store=self.store)
+
+
-- 
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