Merge pull request #115 from markflorisson88/_fused_dispatch_rebased

fused runtime dispatch for buffers

Cython/Compiler/Code.py

@@ -14,6 +14,7 @@ import re
 import sys
 from string import Template
 import operator
+import textwrap
 
 import Naming
 import Options
@@ -376,7 +377,7 @@ class UtilityCode(UtilityCodeBase):
                 self.cleanup(writer, output.module_pos)
 
 
-def sub_tempita(s, context, file, name):
+def sub_tempita(s, context, file=None, name=None):
     "Run tempita on string s with given context."
     if not s:
         return None
@@ -1940,6 +1941,75 @@ class PyrexCodeWriter(object):
     def dedent(self):
         self.level -= 1
 
+class PyxCodeWriter(object):
+    """
+    Can be used for writing out some Cython code. To use the indenter
+    functionality, the Cython.Compiler.Importer module will have to be used
+    to load the code to support python 2.4
+    """
+
+    def __init__(self, buffer=None, indent_level=0, context=None, encoding='ascii'):
+        self.buffer = buffer or StringIOTree()
+        self.level = indent_level
+        self.context = context
+        self.encoding = encoding
+
+    def indent(self, levels=1):
+        self.level += levels
+        return True
+
+    def dedent(self, levels=1):
+        self.level -= levels
+
+    def indenter(self, line):
+        """
+        Instead of
+
+            with pyx_code.indenter("for i in range(10):"):
+                pyx_code.putln("print i")
+
+        write
+
+            if pyx_code.indenter("for i in range(10);"):
+                pyx_code.putln("print i")
+                pyx_code.dedent()
+        """
+        self.putln(line)
+        self.indent()
+        return True
+
+    def getvalue(self):
+        result = self.buffer.getvalue()
+        if not isinstance(result, unicode):
+            result = result.decode(self.encoding)
+
+        return result
+
+    def putln(self, line, context=None):
+        context = context or self.context
+        if context:
+            line = sub_tempita(line, context)
+        self._putln(line)
+
+    def _putln(self, line):
+        self.buffer.write("%s%s\n" % (self.level * "    ", line))
+
+    def put_chunk(self, chunk, context=None):
+        context = context or self.context
+        if context:
+            chunk = sub_tempita(chunk, context)
+
+        chunk = textwrap.dedent(chunk)
+        for line in chunk.splitlines():
+            self._putln(line)
+
+    def insertion_point(self):
+        return PyxCodeWriter(self.buffer.insertion_point(), self.level,
+                             self.context)
+
+    def named_insertion_point(self, name):
+        setattr(self, name, self.insertion_point())
+
 
 class ClosureTempAllocator(object):
     def __init__(self, klass):

Cython/Compiler/ExprNodes.py

@@ -6245,7 +6245,7 @@ class PyCFunctionNode(ExprNode, ModuleNameMixin):
                 else:
                     arg.default = DefaultLiteralArgNode(arg.pos, arg.default)
                 default_args.append(arg)
-        if nonliteral_objects or nonliteral_objects:
+        if nonliteral_objects or nonliteral_other:
             module_scope = env.global_scope()
             cname = module_scope.next_id(Naming.defaults_struct_prefix)
             scope = Symtab.StructOrUnionScope(cname)

Cython/Compiler/ParseTreeTransforms.py

@@ -1488,7 +1488,8 @@ if VALUE is not None:
 
                 return node
 
-            node = Nodes.FusedCFuncDefNode(node, env)
+            from Cython.Compiler import FusedNode
+            node = FusedNode.FusedCFuncDefNode(node, env)
 
             self.fused_function = node
             self.visitchildren(node)
@@ -1498,6 +1499,7 @@ if VALUE is not None:
                 # Create PyCFunction nodes for each specialization
                 node.stats.insert(0, node.py_func)
                 node.py_func = self.visit(node.py_func)
+                node.update_fused_defnode_entry(env)
                 pycfunc = ExprNodes.PyCFunctionNode.from_defnode(node.py_func,
                                                                  True)
                 pycfunc = ExprNodes.ProxyNode(pycfunc.coerce_to_temp(env))

Cython/Compiler/PyrexTypes.py

@@ -790,10 +790,9 @@ class BufferType(BaseType):
 
     def __str__(self):
         # avoid ', ', as fused functions split the signature string on ', '
+        cast_str = ''
         if self.cast:
             cast_str = ',cast=True'
-        else:
-            cast_str = ''
 
         return "%s[%s,ndim=%d%s]" % (self.base, self.dtype, self.ndim,
                                       cast_str)
@@ -2661,6 +2660,7 @@ def specialize_entry(entry, cname):
     """
     Specialize an entry of a copied fused function or method
     """
+    entry.is_fused_specialized = True
     entry.name = get_fused_cname(cname, entry.name)
 
     if entry.is_cmethod:

Cython/Compiler/Symtab.py

@@ -120,6 +120,8 @@ class Entry(object):
     # error_on_uninitialized      Have Control Flow issue an error when this entry is
     #                             used uninitialized
     # cf_used          boolean    Entry is used
+    # is_fused_specialized boolean Whether this entry of a cdef or def function
+    #                              is a specialization
 
     # TODO: utility_code and utility_code_definition serves the same purpose...
 
@@ -179,6 +181,7 @@ class Entry(object):
     prev_entry = None
     might_overflow = 0
     fused_cfunction = None
+    is_fused_specialized = False
     utility_code_definition = None
     in_with_gil_block = 0
     from_cython_utility_code = None
@@ -360,11 +363,11 @@ class Scope(object):
         # Return the module-level scope containing this scope.
         return self.outer_scope.builtin_scope()
 
-    def declare(self, name, cname, type, pos, visibility, shadow = 0):
+    def declare(self, name, cname, type, pos, visibility, shadow = 0, is_type = 0):
         # Create new entry, and add to dictionary if
         # name is not None. Reports a warning if already
         # declared.
-        if type.is_buffer and not isinstance(self, LocalScope):
+        if type.is_buffer and not isinstance(self, LocalScope): # and not is_type:
             error(pos, 'Buffer types only allowed as function local variables')
         if not self.in_cinclude and cname and re.match("^_[_A-Z]+$", cname):
             # See http://www.gnu.org/software/libc/manual/html_node/Reserved-Names.html#Reserved-Names
@@ -415,7 +418,8 @@ class Scope(object):
         # Add an entry for a type definition.
         if not cname:
             cname = name
-        entry = self.declare(name, cname, type, pos, visibility, shadow)
+        entry = self.declare(name, cname, type, pos, visibility, shadow,
+                             is_type=True)
         entry.is_type = 1
         entry.api = api
         if defining:

Cython/Compiler/TreeFragment.py

@@ -231,6 +231,12 @@ class TreeFragment(object):
                                    substitutions = nodes,
                                    temps = self.temps + temps, pos = pos)
 
+class SetPosTransform(VisitorTransform):
+    def __init__(self, pos):
+        super(SetPosTransform, self).__init__()
+        self.pos = pos
 
-
-
+    def visit_Node(self, node):
+        node.pos = self.pos
+        self.visitchildren(node)
+        return node

Cython/Compiler/UtilityCode.py

@@ -167,3 +167,11 @@ class CythonUtilityCode(Code.UtilityCodeBase):
                 dep.declare_in_scope(dest_scope)
 
         return original_scope
+
+def declare_declarations_in_scope(declaration_string, env, private_type=True,
+                                  *args, **kwargs):
+    """
+    Declare some declarations given as Cython code in declaration_string
+    in scope env.
+    """
+    CythonUtilityCode(declaration_string, *args, **kwargs).declare_in_scope(env)

Cython/Utility/CythonFunction.c

@@ -740,8 +740,6 @@ __pyx_FusedFunction_callfunction(PyObject *func, PyObject *args, PyObject *kw)
     int static_specialized = (cyfunc->flags & __Pyx_CYFUNCTION_STATICMETHOD &&
                               !((__pyx_FusedFunctionObject *) func)->__signatures__);
 
-    //PyObject_Print(args, stdout, Py_PRINT_RAW);
-
     if (cyfunc->flags & __Pyx_CYFUNCTION_CCLASS && !static_specialized) {
         Py_ssize_t argc;
         PyObject *new_args;
@@ -827,8 +825,9 @@ __pyx_FusedFunction_call(PyObject *func, PyObject *args, PyObject *kw)
     }
 
     if (binding_func->__signatures__) {
-        PyObject *tup = PyTuple_Pack(3, binding_func->__signatures__, args,
-                                        kw == NULL ? Py_None : kw);
+        PyObject *tup = PyTuple_Pack(4, binding_func->__signatures__, args,
+                                        kw == NULL ? Py_None : kw,
+                                        binding_func->func.defaults_tuple);
         if (!tup)
             goto __pyx_err;
 

Cython/Utility/MemoryView.pyx

@@ -978,7 +978,7 @@ cdef memoryview_fromslice({{memviewslice_name}} *memviewslice,
     result.from_slice = memviewslice[0]
     __PYX_INC_MEMVIEW(memviewslice, 1)
 
-    result.from_object = <object> memviewslice.memview.obj
+    result.from_object = (<memoryview> memviewslice.memview).base
     result.typeinfo = memviewslice.memview.typeinfo
 
     result.view = memviewslice.memview.view

pyximport/pyximport.py

@@ -374,6 +374,18 @@ class PyxArgs(object):
 
 ##pyxargs=None   
 
+def _have_importers():
+    has_py_importer = False
+    has_pyx_importer = False
+    for importer in sys.meta_path:
+        if isinstance(importer, PyxImporter):
+            if isinstance(importer, PyImporter):
+                has_py_importer = True
+            else:
+                has_pyx_importer = True
+
+    return has_py_importer, has_pyx_importer
+
 def install(pyximport=True, pyimport=False, build_dir=None, build_in_temp=True,
             setup_args={}, reload_support=False,
             load_py_module_on_import_failure=False):
@@ -426,23 +438,32 @@ def install(pyximport=True, pyimport=False, build_dir=None, build_in_temp=True,
     pyxargs.reload_support = reload_support
     pyxargs.load_py_module_on_import_failure = load_py_module_on_import_failure
 
-    has_py_importer = False
-    has_pyx_importer = False
-    for importer in sys.meta_path:
-        if isinstance(importer, PyxImporter):
-            if isinstance(importer, PyImporter):
-                has_py_importer = True
-            else:
-                has_pyx_importer = True
+    has_py_importer, has_pyx_importer = _have_importers()
+    py_importer, pyx_importer = None, None
 
     if pyimport and not has_py_importer:
-        importer = PyImporter(pyxbuild_dir=build_dir)
-        sys.meta_path.insert(0, importer)
+        py_importer = PyImporter(pyxbuild_dir=build_dir)
+        sys.meta_path.insert(0, py_importer)
 
     if pyximport and not has_pyx_importer:
-        importer = PyxImporter(pyxbuild_dir=build_dir)
-        sys.meta_path.append(importer)
+        pyx_importer = PyxImporter(pyxbuild_dir=build_dir)
+        sys.meta_path.append(pyx_importer)
+
+    return py_importer, pyx_importer
 
+def uninstall(py_importer, pyx_importer):
+    """
+    Uninstall an import hook.
+    """
+    try:
+        sys.meta_path.remove(py_importer)
+    except ValueError:
+        pass
+
+    try:
+        sys.meta_path.remove(pyx_importer)
+    except ValueError:
+        pass
 
 # MAIN
 

runtests.py

@@ -1251,6 +1251,8 @@ def refactor_for_py3(distdir, cy3_dir):
                      recursive-include Cython *.py *.pyx *.pxd
                      recursive-include Cython/Debugger/Tests *
                      recursive-include Cython/Utility *
+                     recursive-exclude pyximport test
+                     include pyximport/*.py
                      include runtests.py
                      include cython.py
                      ''')

setup.py

@@ -112,6 +112,7 @@ def compile_cython_modules(profile=False, compile_more=False, cython_with_refnan
                         "Cython.Compiler.FlowControl",
                         "Cython.Compiler.Code",
                         "Cython.Runtime.refnanny",
+                        # "Cython.Compiler.FusedNode",
                         ]
     if compile_more:
         compiled_modules.extend([

tests/run/cyfunction_defaults.pyx

@@ -107,3 +107,27 @@ def test_defaults_fused(cython.floating arg1, cython.floating arg2 = counter2())
     (2.0,)
     """
     print arg1, arg2
+
+funcs = []
+for i in range(10):
+    def defaults_fused(cython.floating a, cython.floating b = i):
+        return a, b
+    funcs.append(defaults_fused)
+
+def test_dynamic_defaults_fused():
+    """
+    >>> test_dynamic_defaults_fused()
+    i 0 func result (1.0, 0.0) defaults (0,)
+    i 1 func result (1.0, 1.0) defaults (1,)
+    i 2 func result (1.0, 2.0) defaults (2,)
+    i 3 func result (1.0, 3.0) defaults (3,)
+    i 4 func result (1.0, 4.0) defaults (4,)
+    i 5 func result (1.0, 5.0) defaults (5,)
+    i 6 func result (1.0, 6.0) defaults (6,)
+    i 7 func result (1.0, 7.0) defaults (7,)
+    i 8 func result (1.0, 8.0) defaults (8,)
+    i 9 func result (1.0, 9.0) defaults (9,)
+    """
+    for i, f in enumerate(funcs):
+        print "i", i, "func result", f(1.0), "defaults", get_defaults(f)
+