Merge remote branch 'remotes/bhy/purepy-decors'

Conflicts:
	Cython/Compiler/Main.py

Cython/Compiler/Main.py

@@ -108,8 +108,8 @@ class Context(object):
         from ParseTreeTransforms import InterpretCompilerDirectives, TransformBuiltinMethods
         from ParseTreeTransforms import ExpandInplaceOperators, ParallelRangeTransform
         from TypeInference import MarkAssignments, MarkOverflowingArithmetic
-        from ParseTreeTransforms import AlignFunctionDefinitions, GilCheck
-        from ParseTreeTransforms import RemoveUnreachableCode
+        from ParseTreeTransforms import AdjustDefByDirectives, AlignFunctionDefinitions
+        from ParseTreeTransforms import RemoveUnreachableCode, GilCheck
         from AnalysedTreeTransforms import AutoTestDictTransform
         from AutoDocTransforms import EmbedSignature
         from Optimize import FlattenInListTransform, SwitchTransform, IterationTransform
@@ -137,6 +137,8 @@ class Context(object):
             _specific_post_parse,
             InterpretCompilerDirectives(self, self.compiler_directives),
             ParallelRangeTransform(self),
+            AdjustDefByDirectives(self),
+            _align_function_definitions,
             MarkClosureVisitor(self),
             _align_function_definitions,
             RemoveUnreachableCode(self),

Cython/Compiler/Nodes.py

@@ -557,6 +557,9 @@ class CFuncDeclaratorNode(CDeclaratorNode):
             if name_declarator.cname:
                 error(self.pos,
                     "Function argument cannot have C name specification")
+            if i==0 and env.is_c_class_scope and type.is_unspecified:
+                # fix the type of self
+                type = env.parent_type
             # Turn *[] argument into **
             if type.is_array:
                 type = PyrexTypes.c_ptr_type(type.base_type)
@@ -1970,7 +1973,7 @@ class DefNode(FuncDefNode):
         self.num_required_kw_args = rk
         self.num_required_args = r
 
-    def as_cfunction(self, cfunc=None, scope=None):
+    def as_cfunction(self, cfunc=None, scope=None, overridable=True):
         if self.star_arg:
             error(self.star_arg.pos, "cdef function cannot have star argument")
         if self.starstar_arg:
@@ -1990,7 +1993,7 @@ class DefNode(FuncDefNode):
                                               exception_check = False,
                                               nogil = False,
                                               with_gil = False,
-                                              is_overridable = True)
+                                              is_overridable = overridable)
             cfunc = CVarDefNode(self.pos, type=cfunc_type)
         else:
             if scope is None:

Cython/Compiler/Options.py

@@ -112,6 +112,9 @@ directive_types = {
     'final' : bool,  # final cdef classes and methods
     'internal' : bool,  # cdef class visibility in the module dict
     'infer_types' : bool, # values can be True/None/False
+    'cfunc' : None, # decorators do not take directive value
+    'ccall' : None,
+    'cclass' : None,
     }
 
 for key, val in directive_defaults.items():

Cython/Compiler/ParseTreeTransforms.py

@@ -1612,6 +1612,58 @@ class ExpandInplaceOperators(EnvTransform):
         # In-place assignments can't happen within an expression.
         return node
 
+class AdjustDefByDirectives(CythonTransform, SkipDeclarations):
+    """
+    Adjust function and class definitions by the decorator directives:
+
+    @cython.cfunc
+    @cython.cclass
+    @cython.ccall
+    """
+
+    def visit_ModuleNode(self, node):
+        self.directives = node.directives
+        self.in_py_class = False
+        self.visitchildren(node)
+        return node
+
+    def visit_CompilerDirectivesNode(self, node):
+        old_directives = self.directives
+        self.directives = node.directives
+        self.visitchildren(node)
+        self.directives = old_directives
+        return node
+
+    def visit_DefNode(self, node):
+        if 'ccall' in self.directives:
+            node = node.as_cfunction(overridable=True)
+            return self.visit(node)
+        if 'cfunc' in self.directives:
+            if self.in_py_class:
+                error(node.pos, "cfunc directive is not allowed here")
+            else:
+                node = node.as_cfunction(overridable=False)
+                return self.visit(node)
+        self.visitchildren(node)
+        return node
+
+    def visit_PyClassDefNode(self, node):
+        if 'cclass' in self.directives:
+            node = node.as_cclass()
+            return self.visit(node)
+        else:
+            old_in_pyclass = self.in_py_class
+            self.in_py_class = True
+            self.visitchildren(node)
+            self.in_py_class = old_in_pyclass
+            return node
+
+    def visit_CClassDefNode(self, node):
+        old_in_pyclass = self.in_py_class
+        self.in_py_class = False
+        self.visitchildren(node)
+        self.in_py_class = old_in_pyclass
+        return node
 
 class AlignFunctionDefinitions(CythonTransform):
     """

Cython/Compiler/Parsing.py

@@ -1750,7 +1750,7 @@ def p_statement(s, ctx, first_statement = 0):
     elif s.sy == 'IF':
         return p_IF_statement(s, ctx)
     elif s.sy == 'DECORATOR':
-        if ctx.level not in ('module', 'class', 'c_class', 'function', 'property', 'module_pxd', 'c_class_pxd'):
+        if ctx.level not in ('module', 'class', 'c_class', 'function', 'property', 'module_pxd', 'c_class_pxd', 'other'):
             s.error('decorator not allowed here')
         s.level = ctx.level
         decorators = p_decorators(s)

Cython/Shadow.py

@@ -26,6 +26,8 @@ class _EmptyDecoratorAndManager(object):
     def __exit__(self, exc_type, exc_value, traceback):
         pass
 
+cclass = ccall = cfunc = _EmptyDecoratorAndManager()
+
 def inline(f, *args, **kwds):
   if isinstance(f, basestring):
     from Cython.Build.Inline import cython_inline

runtests.py

@@ -171,6 +171,7 @@ VER_DEP_MODULES = {
                                           'run.cython3',
                                           'run.generators_py', # generators, with statement
                                           'run.pure_py', # decorators, with statement
+                                          'run.purecdef',
                                           ]),
     (2,7) : (operator.lt, lambda x: x in ['run.withstat_py', # multi context with statement
                                           ]),

tests/errors/cdef_in_pyclass.pyx

+class Pyclass(object):
+    cdef bad(self):
+        pass
+
+_ERRORS = """
+ 2:9: cdef statement not allowed here
+"""

tests/errors/cfunc_directive_in_pyclass.pyx

+import cython
+
+class Pyclass(object):
+    @cython.cfunc
+    def bad(self):
+        pass
+
+_ERRORS = """
+ 5:4: cfunc directive is not allowed here
+"""

tests/run/purecdef.py

+import cython
+from cython import cfunc, cclass, ccall
+
+@cython.test_assert_path_exists('//CFuncDefNode')
+@cython.cfunc
+def ftang():
+    x = 0
+
+@cython.test_assert_path_exists('//CFuncDefNode')
+@cfunc
+def fpure(a):
+    return a*2
+
+def test():
+    """
+    >>> test()
+    4
+    """
+    ftang()
+    return fpure(2)
+
+with cfunc:
+    @cython.test_assert_path_exists('//CFuncDefNode')
+    def fwith1(a):
+        return a*3
+
+    @cython.test_assert_path_exists('//CFuncDefNode')
+    def fwith2(a):
+        return a*4
+
+with cclass:
+    @cython.test_assert_path_exists('//CClassDefNode')
+    class Egg(object):
+        pass
+    @cython.test_assert_path_exists('//CClassDefNode')
+    class BigEgg(object):
+        @cython.test_assert_path_exists('//CFuncDefNode')
+        @cython.cfunc
+        def f(self, a):
+            return a*10
+
+def test_with():
+    """
+    >>> test_with()
+    (3, 4, 50)
+    """
+    return fwith1(1), fwith2(1), BigEgg().f(5)
+
+@cython.test_assert_path_exists('//CClassDefNode')
+@cython.cclass
+class PureFoo(object):
+    a = cython.declare(cython.double)
+
+    def __init__(self, a):
+        self.a = a
+
+    def __call__(self):
+        return self.a
+
+    @cython.test_assert_path_exists('//CFuncDefNode')
+    @cython.cfunc
+    def puremeth(self, a):
+        return a*2
+
+def test_method():
+    """
+    >>> test_method()
+    4
+    True
+    """
+    x = PureFoo(2)
+    print(x.puremeth(2))
+    if cython.compiled:
+        print(isinstance(x(), float))
+    else:
+        print(True)
+    return
+
+@cython.ccall
+def ccall_sqr(x):
+    return x*x
+
+@cclass
+class Overidable(object):
+    @ccall
+    def meth(self):
+        return 0
+
+def test_ccall():
+    """
+    >>> test_ccall()
+    25
+    >>> ccall_sqr(5)
+    25
+    """
+    return ccall_sqr(5)
+
+def test_ccall_method(x):
+    """
+    >>> test_ccall_method(Overidable())
+    0
+    >>> Overidable().meth()
+    0
+    >>> class Foo(Overidable):
+    ...    def meth(self):
+    ...        return 1
+    >>> test_ccall_method(Foo())
+    1
+    >>> Foo().meth()
+    1
+    """
+    return x.meth()