237 lines
9.2 KiB
Python
237 lines
9.2 KiB
Python
from __future__ import absolute_import
|
|
|
|
from .TreeFragment import parse_from_strings, StringParseContext
|
|
from . import Symtab
|
|
from . import Naming
|
|
from . import Code
|
|
|
|
|
|
class NonManglingModuleScope(Symtab.ModuleScope):
|
|
|
|
def __init__(self, prefix, *args, **kw):
|
|
self.prefix = prefix
|
|
self.cython_scope = None
|
|
self.cpp = kw.pop('cpp', False)
|
|
Symtab.ModuleScope.__init__(self, *args, **kw)
|
|
|
|
def add_imported_entry(self, name, entry, pos):
|
|
entry.used = True
|
|
return super(NonManglingModuleScope, self).add_imported_entry(name, entry, pos)
|
|
|
|
def mangle(self, prefix, name=None):
|
|
if name:
|
|
if prefix in (Naming.typeobj_prefix, Naming.func_prefix, Naming.var_prefix, Naming.pyfunc_prefix):
|
|
# Functions, classes etc. gets a manually defined prefix easily
|
|
# manually callable instead (the one passed to CythonUtilityCode)
|
|
prefix = self.prefix
|
|
return "%s%s" % (prefix, name)
|
|
else:
|
|
return Symtab.ModuleScope.mangle(self, prefix)
|
|
|
|
|
|
class CythonUtilityCodeContext(StringParseContext):
|
|
scope = None
|
|
|
|
def find_module(self, module_name, relative_to=None, pos=None, need_pxd=True, absolute_fallback=True):
|
|
if relative_to:
|
|
raise AssertionError("Relative imports not supported in utility code.")
|
|
if module_name != self.module_name:
|
|
if module_name not in self.modules:
|
|
raise AssertionError("Only the cython cimport is supported.")
|
|
else:
|
|
return self.modules[module_name]
|
|
|
|
if self.scope is None:
|
|
self.scope = NonManglingModuleScope(
|
|
self.prefix, module_name, parent_module=None, context=self, cpp=self.cpp)
|
|
|
|
return self.scope
|
|
|
|
|
|
class CythonUtilityCode(Code.UtilityCodeBase):
|
|
"""
|
|
Utility code written in the Cython language itself.
|
|
|
|
The @cname decorator can set the cname for a function, method of cdef class.
|
|
Functions decorated with @cname('c_func_name') get the given cname.
|
|
|
|
For cdef classes the rules are as follows:
|
|
obj struct -> <cname>_obj
|
|
obj type ptr -> <cname>_type
|
|
methods -> <class_cname>_<method_cname>
|
|
|
|
For methods the cname decorator is optional, but without the decorator the
|
|
methods will not be prototyped. See Cython.Compiler.CythonScope and
|
|
tests/run/cythonscope.pyx for examples.
|
|
"""
|
|
|
|
is_cython_utility = True
|
|
|
|
def __init__(self, impl, name="__pyxutil", prefix="", requires=None,
|
|
file=None, from_scope=None, context=None, compiler_directives=None,
|
|
outer_module_scope=None):
|
|
# 1) We need to delay the parsing/processing, so that all modules can be
|
|
# imported without import loops
|
|
# 2) The same utility code object can be used for multiple source files;
|
|
# while the generated node trees can be altered in the compilation of a
|
|
# single file.
|
|
# Hence, delay any processing until later.
|
|
context_types = {}
|
|
if context is not None:
|
|
from .PyrexTypes import BaseType
|
|
for key, value in context.items():
|
|
if isinstance(value, BaseType):
|
|
context[key] = key
|
|
context_types[key] = value
|
|
impl = Code.sub_tempita(impl, context, file, name)
|
|
self.impl = impl
|
|
self.name = name
|
|
self.file = file
|
|
self.prefix = prefix
|
|
self.requires = requires or []
|
|
self.from_scope = from_scope
|
|
self.outer_module_scope = outer_module_scope
|
|
self.compiler_directives = compiler_directives
|
|
self.context_types = context_types
|
|
|
|
def __eq__(self, other):
|
|
if isinstance(other, CythonUtilityCode):
|
|
return self._equality_params() == other._equality_params()
|
|
else:
|
|
return False
|
|
|
|
def _equality_params(self):
|
|
outer_scope = self.outer_module_scope
|
|
while isinstance(outer_scope, NonManglingModuleScope):
|
|
outer_scope = outer_scope.outer_scope
|
|
return self.impl, outer_scope, self.compiler_directives
|
|
|
|
def __hash__(self):
|
|
return hash(self.impl)
|
|
|
|
def get_tree(self, entries_only=False, cython_scope=None):
|
|
from .AnalysedTreeTransforms import AutoTestDictTransform
|
|
# The AutoTestDictTransform creates the statement "__test__ = {}",
|
|
# which when copied into the main ModuleNode overwrites
|
|
# any __test__ in user code; not desired
|
|
excludes = [AutoTestDictTransform]
|
|
|
|
from . import Pipeline, ParseTreeTransforms
|
|
context = CythonUtilityCodeContext(
|
|
self.name, compiler_directives=self.compiler_directives,
|
|
cpp=cython_scope.is_cpp() if cython_scope else False)
|
|
context.prefix = self.prefix
|
|
context.cython_scope = cython_scope
|
|
#context = StringParseContext(self.name)
|
|
tree = parse_from_strings(
|
|
self.name, self.impl, context=context, allow_struct_enum_decorator=True)
|
|
pipeline = Pipeline.create_pipeline(context, 'pyx', exclude_classes=excludes)
|
|
|
|
if entries_only:
|
|
p = []
|
|
for t in pipeline:
|
|
p.append(t)
|
|
if isinstance(p, ParseTreeTransforms.AnalyseDeclarationsTransform):
|
|
break
|
|
|
|
pipeline = p
|
|
|
|
transform = ParseTreeTransforms.CnameDirectivesTransform(context)
|
|
# InterpretCompilerDirectives already does a cdef declarator check
|
|
#before = ParseTreeTransforms.DecoratorTransform
|
|
before = ParseTreeTransforms.InterpretCompilerDirectives
|
|
pipeline = Pipeline.insert_into_pipeline(pipeline, transform,
|
|
before=before)
|
|
|
|
def merge_scope(scope):
|
|
def merge_scope_transform(module_node):
|
|
module_node.scope.merge_in(scope)
|
|
return module_node
|
|
return merge_scope_transform
|
|
|
|
if self.from_scope:
|
|
pipeline = Pipeline.insert_into_pipeline(
|
|
pipeline, merge_scope(self.from_scope),
|
|
before=ParseTreeTransforms.AnalyseDeclarationsTransform)
|
|
|
|
for dep in self.requires:
|
|
if isinstance(dep, CythonUtilityCode) and hasattr(dep, 'tree') and not cython_scope:
|
|
pipeline = Pipeline.insert_into_pipeline(
|
|
pipeline, merge_scope(dep.tree.scope),
|
|
before=ParseTreeTransforms.AnalyseDeclarationsTransform)
|
|
|
|
if self.outer_module_scope:
|
|
# inject outer module between utility code module and builtin module
|
|
def scope_transform(module_node):
|
|
module_node.scope.outer_scope = self.outer_module_scope
|
|
return module_node
|
|
|
|
pipeline = Pipeline.insert_into_pipeline(
|
|
pipeline, scope_transform,
|
|
before=ParseTreeTransforms.AnalyseDeclarationsTransform)
|
|
|
|
if self.context_types:
|
|
# inject types into module scope
|
|
def scope_transform(module_node):
|
|
for name, type in self.context_types.items():
|
|
entry = module_node.scope.declare_type(name, type, None, visibility='extern')
|
|
entry.in_cinclude = True
|
|
return module_node
|
|
|
|
pipeline = Pipeline.insert_into_pipeline(
|
|
pipeline, scope_transform,
|
|
before=ParseTreeTransforms.AnalyseDeclarationsTransform)
|
|
|
|
(err, tree) = Pipeline.run_pipeline(pipeline, tree, printtree=False)
|
|
assert not err, err
|
|
self.tree = tree
|
|
return tree
|
|
|
|
def put_code(self, output):
|
|
pass
|
|
|
|
@classmethod
|
|
def load_as_string(cls, util_code_name, from_file=None, **kwargs):
|
|
"""
|
|
Load a utility code as a string. Returns (proto, implementation)
|
|
"""
|
|
util = cls.load(util_code_name, from_file, **kwargs)
|
|
return util.proto, util.impl # keep line numbers => no lstrip()
|
|
|
|
def declare_in_scope(self, dest_scope, used=False, cython_scope=None,
|
|
whitelist=None):
|
|
"""
|
|
Declare all entries from the utility code in dest_scope. Code will only
|
|
be included for used entries. If module_name is given, declare the
|
|
type entries with that name.
|
|
"""
|
|
tree = self.get_tree(entries_only=True, cython_scope=cython_scope)
|
|
|
|
entries = tree.scope.entries
|
|
entries.pop('__name__')
|
|
entries.pop('__file__')
|
|
entries.pop('__builtins__')
|
|
entries.pop('__doc__')
|
|
|
|
for entry in entries.values():
|
|
entry.utility_code_definition = self
|
|
entry.used = used
|
|
|
|
original_scope = tree.scope
|
|
dest_scope.merge_in(original_scope, merge_unused=True, whitelist=whitelist)
|
|
tree.scope = dest_scope
|
|
|
|
for dep in self.requires:
|
|
if dep.is_cython_utility:
|
|
dep.declare_in_scope(dest_scope, cython_scope=cython_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)
|