def validate_axes(pos, axes):
if len(axes) >= Options.buffer_max_dims:
error(pos, "More dimensions than the maximum number"
" of buffer dimensions were used.")
return False
return True
def error(self, message, pos = None, fatal = True):
if pos is None:
pos = self.position()
if self.sy == 'INDENT':
err = error(pos, "Possible inconsistent indentation")
err = error(pos, message)
if fatal: raise err
def declare_struct_or_union(self, name, kind, scope, typedef_flag, pos, cname = None, visibility = 'private', is_cplus = 0, base_types = None): # Add an entry for a struct or union definition. if not cname: if self.in_cinclude or visibility == 'public': cname = name else: cname = self.mangle(Naming.type_prefix, name) entry = self.lookup_here(name) if not entry: type = CStructOrUnionType(name, kind, scope, typedef_flag, cname, is_cplus = is_cplus, base_types = base_types) entry = self.declare_type(name, type, pos, cname, visibility = visibility, defining = scope is not None) self.sue_entries.append(entry) else: if not (entry.is_type and entry.type.is_struct_or_union and entry.type.kind == kind): entry.redeclared(pos) elif scope and entry.type.scope: error(pos, "'%s' already defined" % name) else: self.check_previous_typedef_flag(entry, typedef_flag, pos) self.check_previous_visibility(entry, visibility, pos) if scope: entry.pos = pos entry.type.set_scope(scope) self.type_entries.append(entry) if not scope and not entry.type.scope: self.check_for_illegal_incomplete_ctypedef(typedef_flag, pos) return entry
def error(self, message, pos=None, fatal=True):
if pos is None:
pos = self.position()
if self.sy == 'INDENT':
err = error(pos, "Possible inconsistent indentation")
err = error(pos, message)
if fatal: raise err
def report(self):
self.messages.sort()
for pos, is_error, message in self.messages:
if is_error:
error(pos, message)
else:
warning(pos, message, 2)
def get_copy_new_utility(pos, from_memview, to_memview):
if from_memview.dtype != to_memview.dtype:
return error(pos, "dtypes must be the same!")
if len(from_memview.axes) != len(to_memview.axes):
return error(pos, "number of dimensions must be same")
if not (to_memview.is_c_contig or to_memview.is_f_contig):
return error(pos, "to_memview must be c or f contiguous.")
for (access, packing) in from_memview.axes:
if access != 'direct':
return error(pos,
"cannot handle 'full' or 'ptr' access at this time.")
if to_memview.is_c_contig:
mode = 'c'
contig_flag = memview_c_contiguous
elif to_memview.is_f_contig:
mode = 'fortran'
contig_flag = memview_f_contiguous
return load_memview_c_utility(
"CopyContentsUtility",
context=dict(context,
mode=mode,
dtype_decl=to_memview.dtype.declaration_code(''),
contig_flag=contig_flag,
ndim=to_memview.ndim,
func_cname=copy_c_or_fortran_cname(to_memview),
dtype_is_object=int(to_memview.dtype.is_pyobject)),
requires=[copy_contents_new_utility])
def parse(self, source_desc, scope, pxd, full_module_name):
if not isinstance(source_desc, FileSourceDescriptor):
raise RuntimeError("Only file sources for code supported")
source_filename = source_desc.filename
scope.cpp = self.cpp
# Parse the given source file and return a parse tree.
try:
f = Utils.open_source_file(source_filename, "rU")
try:
import Parsing
s = PyrexScanner(f,
source_desc,
source_encoding=f.encoding,
scope=scope,
context=self)
tree = Parsing.p_module(s, pxd, full_module_name)
finally:
f.close()
except UnicodeDecodeError, msg:
#import traceback
#traceback.print_exc()
error((
source_desc, 0, 0
), "Decoding error, missing or incorrect coding=<encoding-name> at top of source (%s)"
% msg)
def declare_var(self, name, type, pos,
cname = None, visibility = 'private', is_cdef = 0):
# Add an entry for an attribute.
if self.defined:
error(pos,
"C attributes cannot be added in implementation part of"
" extension type")
if get_special_method_signature(name):
error(pos,
"The name '%s' is reserved for a special method."
% name)
if not cname:
cname = name
entry = self.declare(name, cname, type, pos)
entry.visibility = visibility
entry.is_variable = 1
self.var_entries.append(entry)
if type.is_pyobject:
self.has_pyobject_attrs = 1
if visibility not in ('private', 'public', 'readonly'):
error(pos,
"Attribute of extension type cannot be declared %s" % visibility)
if visibility in ('public', 'readonly'):
if type.pymemberdef_typecode:
self.public_attr_entries.append(entry)
else:
error(pos,
"C attribute of type '%s' cannot be accessed from Python" % type)
if visibility == 'public' and type.is_extension_type:
error(pos,
"Non-generic Python attribute cannot be exposed for writing from Python")
return entry
def declare_global(self, name, pos):
# Pull entry from global scope into local scope.
if self.lookup_here(name):
error(pos, "'%s' redeclared")
else:
entry = self.global_scope().lookup_target(name)
self.entries[name] = entry
def find_include_file(self, filename, pos):
# Search list of include directories for filename.
# Reports an error and returns None if not found.
path = self.search_include_directories(filename, "", pos, include=True)
if not path:
error(pos, "'%s' not found" % filename)
return path
def report(self):
self.messages.sort()
for pos, is_error, message in self.messages:
if is_error:
error(pos, message)
else:
warning(pos, message, 2)
def find(self, name, pos):
# Look up name, report error if not found.
entry = self.lookup(name)
if entry:
return entry
else:
error(pos, "'%s' is not declared" % name)
def declare_struct_or_union(self,
name,
kind,
scope,
typedef_flag,
pos,
cname=None):
# Add an entry for a struct or union definition.
if not cname:
if self.in_cinclude:
cname = name
else:
cname = self.mangle(Naming.type_prefix, name)
entry = self.lookup_here(name)
if not entry:
type = CStructOrUnionType(name, kind, scope, typedef_flag, cname)
entry = self.declare_type(name, type, pos, cname)
self.sue_entries.append(entry)
else:
if not (entry.is_type and entry.type.is_struct_or_union):
error(pos, "'%s' redeclared" % name)
elif scope and entry.type.scope:
error(pos, "'%s' already defined" % name)
else:
self.check_previous_typedef_flag(entry, typedef_flag, pos)
if scope:
entry.type.scope = scope
if not scope and not entry.type.scope:
self.check_for_illegal_incomplete_ctypedef(typedef_flag, pos)
return entry
def validate_axes(pos, axes):
if len(axes) >= Options.buffer_max_dims:
error(pos, "More dimensions than the maximum number"
" of buffer dimensions were used.")
return False
return True
def generate_enum_definition(self, entry, code):
type = entry.type
name = entry.cname or entry.name or ""
header, footer = \
self.sue_header_footer(type, "enum", name)
code.putln("")
code.putln(header)
enum_values = entry.enum_values
if not enum_values:
error(entry.pos,
"Empty enum definition not allowed outside a"
" 'cdef extern from' block")
else:
last_entry = enum_values[-1]
for value_entry in enum_values:
if value_entry.value == value_entry.name:
value_code = value_entry.cname
else:
value_code = ("%s = %s" % (
value_entry.cname,
value_entry.value))
if value_entry is not last_entry:
value_code += ","
code.putln(value_code)
code.putln(footer)
def mark_assignment(self, lhs, rhs, inplace_op=None):
if isinstance(lhs, (ExprNodes.NameNode, Nodes.PyArgDeclNode)):
if lhs.entry is None:
# TODO: This shouldn't happen...
return
if self.parallel_block_stack:
parallel_node = self.parallel_block_stack[-1]
previous_assignment = parallel_node.assignments.get(lhs.entry)
# If there was a previous assignment to the variable, keep the
# previous assignment position
if previous_assignment:
pos, previous_inplace_op = previous_assignment
if (inplace_op and previous_inplace_op and
inplace_op != previous_inplace_op):
# x += y; x *= y
t = (inplace_op, previous_inplace_op)
error(lhs.pos,
"Reduction operator '%s' is inconsistent "
"with previous reduction operator '%s'" % t)
else:
pos = lhs.pos
parallel_node.assignments[lhs.entry] = (pos, inplace_op)
parallel_node.assigned_nodes.append(lhs)
elif isinstance(lhs, ExprNodes.SequenceNode):
for arg in lhs.args:
self.mark_assignment(arg, object_expr)
else:
# Could use this info to infer cdef class attributes...
pass
def find(self, name, pos): # Look up name, report error if not found. entry = self.lookup(name) if entry: return entry else: error(pos, "'%s' is not declared" % name)
def declare_struct_or_union(self, name, kind, scope,
typedef_flag, pos, cname = None):
# Add an entry for a struct or union definition.
if not cname:
if self.in_cinclude:
cname = name
else:
cname = self.mangle(Naming.type_prefix, name)
entry = self.lookup_here(name)
if not entry:
type = CStructOrUnionType(name, kind, scope, typedef_flag, cname)
entry = self.declare_type(name, type, pos, cname)
self.sue_entries.append(entry)
else:
if not (entry.is_type and entry.type.is_struct_or_union):
error(pos, "'%s' redeclared" % name)
elif scope and entry.type.scope:
error(pos, "'%s' already defined" % name)
else:
self.check_previous_typedef_flag(entry, typedef_flag, pos)
if scope:
entry.type.scope = scope
if not scope and not entry.type.scope:
self.check_for_illegal_incomplete_ctypedef(typedef_flag, pos)
return entry
def find_include_file(self, filename, pos):
# Search list of include directories for filename.
# Reports an error and returns None if not found.
path = self.search_include_directories(filename, "", pos, include=True)
if not path:
error(pos, "'%s' not found" % filename)
return path
def get_copy_new_utility(pos, from_memview, to_memview):
if from_memview.dtype != to_memview.dtype:
return error(pos, "dtypes must be the same!")
if len(from_memview.axes) != len(to_memview.axes):
return error(pos, "number of dimensions must be same")
if not (to_memview.is_c_contig or to_memview.is_f_contig):
return error(pos, "to_memview must be c or f contiguous.")
for (access, packing) in from_memview.axes:
if access != 'direct':
return error(
pos, "cannot handle 'full' or 'ptr' access at this time.")
if to_memview.is_c_contig:
mode = 'c'
contig_flag = memview_c_contiguous
elif to_memview.is_f_contig:
mode = 'fortran'
contig_flag = memview_f_contiguous
return load_memview_c_utility(
"CopyContentsUtility",
context=dict(
context,
mode=mode,
dtype_decl=to_memview.dtype.declaration_code(''),
contig_flag=contig_flag,
ndim=to_memview.ndim,
func_cname=copy_c_or_fortran_cname(to_memview),
dtype_is_object=int(to_memview.dtype.is_pyobject)),
requires=[copy_contents_new_utility])
def mark_assignment(self, lhs, rhs, inplace_op=None):
if isinstance(lhs, (ExprNodes.NameNode, Nodes.PyArgDeclNode)):
if lhs.entry is None:
# TODO: This shouldn't happen...
return
if self.parallel_block_stack:
parallel_node = self.parallel_block_stack[-1]
previous_assignment = parallel_node.assignments.get(lhs.entry)
# If there was a previous assignment to the variable, keep the
# previous assignment position
if previous_assignment:
pos, previous_inplace_op = previous_assignment
if (inplace_op and previous_inplace_op
and inplace_op != previous_inplace_op):
# x += y; x *= y
t = (inplace_op, previous_inplace_op)
error(
lhs.pos, "Reduction operator '%s' is inconsistent "
"with previous reduction operator '%s'" % t)
else:
pos = lhs.pos
parallel_node.assignments[lhs.entry] = (pos, inplace_op)
parallel_node.assigned_nodes.append(lhs)
elif isinstance(lhs, ExprNodes.SequenceNode):
for arg in lhs.args:
self.mark_assignment(arg, object_expr)
else:
# Could use this info to infer cdef class attributes...
pass
def declare_global(self, name, pos): # Pull entry from global scope into local scope. if self.lookup_here(name): error(pos, "'%s' already declared") else: entry = self.global_scope().lookup_target(name) self.entries[name] = entry
def generate_type_ready_code(self, env, entry, code):
# Generate a call to PyType_Ready for an extension
# type defined in this module.
type = entry.type
typeobj_cname = type.typeobj_cname
scope = type.scope
if scope: # could be None if there was an error
if entry.visibility <> 'extern':
for slot in TypeSlots.slot_table:
slot.generate_dynamic_init_code(scope, code)
code.putln("if (PyType_Ready(&%s) < 0) %s" %
(typeobj_cname, code.error_goto(entry.pos)))
if type.vtable_cname:
code.putln("if (__Pyx_SetVtable(%s.tp_dict, %s) < 0) %s" %
(typeobj_cname, type.vtabptr_cname,
code.error_goto(entry.pos)))
env.use_utility_code(Nodes.set_vtable_utility_code)
code.putln(
'if (PyObject_SetAttrString(%s, "%s", (PyObject *)&%s) < 0) %s'
% (Naming.module_cname, scope.class_name, typeobj_cname,
code.error_goto(entry.pos)))
weakref_entry = scope.lookup_here("__weakref__")
if weakref_entry:
if weakref_entry.type is py_object_type:
tp_weaklistoffset = "%s.tp_weaklistoffset" % typeobj_cname
code.putln(
"if (%s == 0) %s = offsetof(struct %s, %s);" %
(tp_weaklistoffset, tp_weaklistoffset,
type.objstruct_cname, weakref_entry.cname))
else:
error(weakref_entry.pos,
"__weakref__ slot must be of type 'object'")
def declare_var(self,
name,
type,
pos,
cname=None,
visibility='private',
is_cdef=0):
# Add an entry for a global variable. If it is a Python
# object type, and not declared with cdef, it will live
# in the module dictionary, otherwise it will be a C
# global variable.
entry = Scope.declare_var(self, name, type, pos, cname, visibility,
is_cdef)
if not visibility in ('private', 'public', 'extern'):
error(pos,
"Module-level variable cannot be declared %s" % visibility)
if not is_cdef:
if not (type.is_pyobject and not type.is_extension_type):
raise InternalError(
"Non-cdef global variable is not a generic Python object")
entry.is_pyglobal = 1
entry.namespace_cname = self.module_cname
if Options.intern_names:
entry.interned_cname = self.intern(name)
else:
entry.is_cglobal = 1
self.var_entries.append(entry)
return entry
def check_c_classes(self):
# Performs post-analysis checking and finishing up of extension types
# being implemented in this module. This is called only for the main
# .pyx file scope, not for cimported .pxd scopes.
#
# Checks all extension types declared in this scope to
# make sure that:
#
# * The extension type is implemented
# * All required object and type names have been specified or generated
# * All non-inherited C methods are implemented
#
# Also carries out the following:
# * Allocates vtable-related names if needed.
#
debug_check_c_classes = 0
if debug_check_c_classes:
print "Scope.check_c_classes: checking scope", self.qualified_name
for entry in self.c_class_entries:
if debug_check_c_classes:
print "...entry", entry.name, entry
print "......type =", entry.type
print "......visibility =", entry.visibility
type = entry.type
name = entry.name
visibility = entry.visibility
# Check defined
if not type.scope:
error(entry.pos, "C class '%s' is declared but not defined" % name)
# Generate typeobj_cname
if visibility <> 'extern' and not type.typeobj_cname:
type.typeobj_cname = self.mangle(Naming.typeobj_prefix, name)
## Generate typeptr_cname
#type.typeptr_cname = self.mangle(Naming.typeptr_prefix, name)
# Check C methods defined
if type.scope:
for method_entry in type.scope.cfunc_entries:
if not method_entry.is_inherited and not method_entry.func_cname:
error(method_entry.pos, "C method '%s' is declared but not defined" %
method_entry.name)
## Generate var entry
#self.attach_var_entry_to_c_class(entry)
# Allocated vtable-related names if necessary
#print "ModuleScope.check_c_classes:", type ###
if type.base_type and type.base_type.vtabslot_cname:
#print "...allocating vtabslot_cname because base type has one" ###
type.vtabslot_cname = "%s.%s" % (
Naming.obj_base_cname, type.base_type.vtabslot_cname)
elif type.scope and type.scope.cfunc_entries:
#print "...allocating vtabslot_cname because there are C methods" ###
type.vtabslot_cname = Naming.vtabslot_cname
if type.vtabslot_cname:
#print "...allocating other vtable related cnames" ###
type.vtabstruct_cname = self.mangle(Naming.vtabstruct_prefix, entry.name)
type.vtabptr_cname = self.mangle(Naming.vtabptr_prefix, entry.name)
type.vtable_cname = self.mangle(Naming.vtable_prefix, entry.name)
def visit_NameNode(self, node):
if self.flow.block:
entry = node.entry or self.env.lookup(node.name)
if entry:
self.flow.mark_reference(node, entry)
if entry in self.reductions and not self.in_inplace_assignment:
error(node.pos, "Cannot read reduction variable in loop body")
return node
def declare_var(self, name, type, pos,
cname = None, visibility = 'private', is_cdef = 0):
# Add an entry for a local variable.
if visibility in ('public', 'readonly'):
error(pos, "Local variable cannot be declared %s" % visibility)
entry = Scope.declare_var(self, name, type, pos,
cname, visibility, is_cdef)
entry.init_to_none = type.is_pyobject
self.var_entries.append(entry)
return entry
def visit_DelStatNode(self, node):
for arg in node.args:
if arg.is_name:
entry = arg.entry or self.env.lookup(arg.name)
if entry.in_closure or entry.from_closure:
error(arg.pos, "can not delete variable '%s' " "referenced in nested scope" % entry.name)
# Mark reference
self.visit(arg)
self.flow.mark_deletion(arg, entry)
return node
def visit_NameNode(self, node):
if self.flow.block:
entry = node.entry or self.env.lookup(node.name)
if entry:
self.flow.mark_reference(node, entry)
if entry in self.reductions and not self.in_inplace_assignment:
error(node.pos,
"Cannot read reduction variable in loop body")
return node
def declare_pyfunction(self, name, pos):
# Add an entry for a method.
signature = get_property_accessor_signature(name)
if signature:
entry = self.declare(name, name, py_object_type, pos)
entry.signature = signature
return entry
else:
error(pos, "Only __get__, __set__ and __del__ methods allowed "
"in a property declaration")
return None
def find_module(self, module_name,
relative_to = None, pos = None, need_pxd = 1):
# Finds and returns the module scope corresponding to
# the given relative or absolute module name. If this
# is the first time the module has been requested, finds
# the corresponding .pxd file and process it.
# If relative_to is not None, it must be a module scope,
# and the module will first be searched for relative to
# that module, provided its name is not a dotted name.
debug_find_module = 0
if debug_find_module:
print("Context.find_module: module_name = %s, relative_to = %s, pos = %s, need_pxd = %s" % (
module_name, relative_to, pos, need_pxd))
scope = None
pxd_pathname = None
if "." not in module_name and relative_to:
if debug_find_module:
print("...trying relative import")
scope = relative_to.lookup_submodule(module_name)
if not scope:
qualified_name = relative_to.qualify_name(module_name)
pxd_pathname = self.find_pxd_file(qualified_name, pos)
if pxd_pathname:
scope = relative_to.find_submodule(module_name)
if not scope:
if debug_find_module:
print("...trying absolute import")
scope = self
for name in module_name.split("."):
scope = scope.find_submodule(name)
if debug_find_module:
print("...scope =", scope)
if not scope.pxd_file_loaded:
if debug_find_module:
print("...pxd not loaded")
scope.pxd_file_loaded = 1
if not pxd_pathname:
if debug_find_module:
print("...looking for pxd file")
pxd_pathname = self.find_pxd_file(module_name, pos)
if debug_find_module:
print("......found ", pxd_pathname)
if not pxd_pathname and need_pxd:
error(pos, "'%s.pxd' not found" % module_name)
if pxd_pathname:
try:
if debug_find_module:
print("Context.find_module: Parsing %s" % pxd_pathname)
pxd_tree = self.parse(pxd_pathname, scope.type_names, pxd = 1,
full_module_name = module_name)
pxd_tree.analyse_declarations(scope)
except CompileError:
pass
return scope
def visit_DelStatNode(self, node):
for arg in node.args:
if arg.is_name:
entry = arg.entry or self.env.lookup(arg.name)
if entry.in_closure or entry.from_closure:
error(
arg.pos, "can not delete variable '%s' "
"referenced in nested scope" % entry.name)
# Mark reference
self._visit(arg)
self.flow.mark_deletion(arg, entry)
return node
def declare_pyfunction(self, name, pos):
# Add an entry for a method.
signature = get_property_accessor_signature(name)
if signature:
entry = self.declare(name, name, py_object_type, pos)
entry.signature = signature
return entry
else:
error(
pos, "Only __get__, __set__ and __del__ methods allowed "
"in a property declaration")
return None
def declare_cfunction(self, name, type, pos, **kwds): #print "StructOrUnionScope.declare_cfunction:", name ### if not self.is_cplus: error(pos, "C struct/union member cannot be a function") # Define it anyway to suppress further errors elif name == "__init__": type.pos = pos self.cplus_constructors.append(type) return #kwds['defining'] = 1 #Scope.declare_cfunction(self, name, type, pos, *args, **kwds) self.declare_var(name, type, pos, **kwds)
def declare(self, name, cname, type, pos): # Create new entry, and add to dictionary if # name is not None. Reports an error if already # declared. dict = self.entries if name and dict.has_key(name): error(pos, "'%s' already declared" % name) entry = Entry(name, cname, type, pos = pos) entry.in_cinclude = self.in_cinclude if name: entry.qualified_name = self.qualify_name(name) dict[name] = entry return entry
def find_qualified_name(self, module_and_name, pos): # Look up qualified name, report error if not found. # module_and_name = [path, name] where path is a list of names. module_path, name = module_and_name scope = self.find_imported_module(module_path, pos) if scope: entry = scope.lookup_here(name) if not entry: mess = "'%s' is not declared" % name if module_path: mess = "%s in module '%s'" % (mess, ".".join(module_path)) error(pos, mess) return entry
def declare(self, name, cname, type, pos):
# Create new entry, and add to dictionary if
# name is not None. Reports an error if already
# declared.
dict = self.entries
if name and dict.has_key(name):
error(pos, "'%s' redeclared" % name)
entry = Entry(name, cname, type, pos=pos)
entry.in_cinclude = self.in_cinclude
if name:
entry.qualified_name = self.qualify_name(name)
dict[name] = entry
return entry
def find_imported_module(self, path, pos): # Look up qualified name, must be a module, report error if not found. # Path is a list of names. scope = self for name in path: entry = scope.find(name, pos) if not entry: return None if entry.as_module: scope = entry.as_module else: error(pos, "'%s' is not a cimported module" % scope.qualified_name) return None return scope
def parse(self, source_desc, scope, pxd, full_module_name):
if not isinstance(source_desc, FileSourceDescriptor):
raise RuntimeError("Only file sources for code supported")
source_filename = source_desc.filename
scope.cpp = self.cpp
# Parse the given source file and return a parse tree.
num_errors = Errors.num_errors
try:
f = Utils.open_source_file(source_filename, "rU")
try:
import Parsing
s = PyrexScanner(f,
source_desc,
source_encoding=f.encoding,
scope=scope,
context=self)
tree = Parsing.p_module(s, pxd, full_module_name)
finally:
f.close()
except UnicodeDecodeError, e:
#import traceback
#traceback.print_exc()
line = 1
column = 0
msg = e.args[-1]
position = e.args[2]
encoding = e.args[0]
f = open(source_filename, "rb")
try:
byte_data = f.read()
finally:
f.close()
# FIXME: make this at least a little less inefficient
for idx, c in enumerate(byte_data):
if c in (ord('\n'), '\n'):
line += 1
column = 0
if idx == position:
break
column += 1
error(
(source_desc, line, column),
"Decoding error, missing or incorrect coding=<encoding-name> "
"at top of source (cannot decode with encoding %r: %s)" %
(encoding, msg))
def declare_module(self, name, scope, pos):
# Declare a cimported module. This is represented as a
# Python module-level variable entry with a module
# scope attached to it. Reports an error and returns
# None if previously declared as something else.
entry = self.lookup_here(name)
if entry:
if not (entry.is_pyglobal and not entry.as_module):
error(pos, "'%s' redeclared" % name)
return None
else:
entry = self.declare_var(name, py_object_type, pos)
entry.as_module = scope
self.cimported_modules.append(scope)
return entry
def declare_var(self, name, type, pos, cname = None, visibility = 'private', **kwds): # Add an entry for an attribute. if not cname: cname = name entry = self.declare(name, cname, type, pos) entry.is_variable = 1 self.var_entries.append(entry) if type.is_pyobject: error(pos, "C struct/union member cannot be a Python object") if visibility <> 'private': error(pos, "C struct/union member cannot be declared %s" % visibility) return entry
def declare_var(self,
name,
type,
pos,
cname=None,
visibility='private',
is_cdef=0):
# Add an entry for a local variable.
if visibility in ('public', 'readonly'):
error(pos, "Local variable cannot be declared %s" % visibility)
entry = Scope.declare_var(self, name, type, pos, cname, visibility,
is_cdef)
entry.init_to_none = type.is_pyobject
self.var_entries.append(entry)
return entry
def declare_module(self, name, scope, pos):
# Declare a cimported module. This is represented as a
# Python module-level variable entry with a module
# scope attached to it. Reports an error and returns
# None if previously declared as something else.
entry = self.lookup_here(name)
if entry:
if not (entry.is_pyglobal and not entry.as_module):
error(pos, "'%s' redeclared" % name)
return None
else:
entry = self.declare_var(name, py_object_type, pos)
entry.as_module = scope
self.cimported_modules.append(scope)
return entry
def check_c_classes(self):
# Performs post-analysis checking and finishing up of extension types
# being implemented in this module. This is called only for the main
# .pyx file scope, not for cimported .pxd scopes.
#
# Checks all extension types declared in this scope to
# make sure that:
#
# * The extension type is implemented
# * All required object and type names have been specified or generated
# * All non-inherited C methods are implemented
#
# Also allocates a name for the vtable if needed.
#
debug_check_c_classes = 0
if debug_check_c_classes:
print "Scope.check_c_classes: checking scope", self.qualified_name
for entry in self.c_class_entries:
if debug_check_c_classes:
print "...entry", entry.name, entry
print "......type =", entry.type
print "......visibility =", entry.visibility
type = entry.type
name = entry.name
visibility = entry.visibility
# Check defined
if not type.scope:
error(entry.pos,
"C class '%s' is declared but not defined" % name)
# Generate typeobj_cname
if visibility <> 'extern' and not type.typeobj_cname:
type.typeobj_cname = self.mangle(Naming.typeobj_prefix, name)
## Generate typeptr_cname
#type.typeptr_cname = self.mangle(Naming.typeptr_prefix, name)
# Check C methods defined
if type.scope:
for method_entry in type.scope.cfunc_entries:
if not method_entry.is_inherited and not method_entry.func_cname:
error(
method_entry.pos,
"C method '%s' is declared but not defined" %
method_entry.name)
# Allocate vtable name if necessary
if type.vtabslot_cname:
#print "ModuleScope.check_c_classes: allocating vtable cname for", self ###
type.vtable_cname = self.mangle(Naming.vtable_prefix,
entry.name)
def parse(self, source_desc, scope, pxd, full_module_name):
if not isinstance(source_desc, FileSourceDescriptor):
raise RuntimeError("Only file sources for code supported")
source_filename = source_desc.filename
scope.cpp = self.cpp
# Parse the given source file and return a parse tree.
num_errors = Errors.num_errors
try:
f = Utils.open_source_file(source_filename, "rU")
try:
import Parsing
s = PyrexScanner(f, source_desc, source_encoding=f.encoding, scope=scope, context=self)
tree = Parsing.p_module(s, pxd, full_module_name)
finally:
f.close()
except UnicodeDecodeError, e:
# import traceback
# traceback.print_exc()
line = 1
column = 0
msg = e.args[-1]
position = e.args[2]
encoding = e.args[0]
f = open(source_filename, "rb")
try:
byte_data = f.read()
finally:
f.close()
# FIXME: make this at least a little less inefficient
for idx, c in enumerate(byte_data):
if c in (ord("\n"), "\n"):
line += 1
column = 0
if idx == position:
break
column += 1
error(
(source_desc, line, column),
"Decoding error, missing or incorrect coding=<encoding-name> "
"at top of source (cannot decode with encoding %r: %s)" % (encoding, msg),
)
def parse(self, source_desc, scope, pxd, full_module_name):
if not isinstance(source_desc, FileSourceDescriptor):
raise RuntimeError("Only file sources for code supported")
source_filename = Utils.encode_filename(source_desc.filename)
# Parse the given source file and return a parse tree.
try:
f = Utils.open_source_file(source_filename, "rU")
try:
s = PyrexScanner(f, source_desc, source_encoding = f.encoding,
scope = scope, context = self)
tree = Parsing.p_module(s, pxd, full_module_name)
finally:
f.close()
except UnicodeDecodeError, msg:
#import traceback
#traceback.print_exc()
error((source_desc, 0, 0), "Decoding error, missing or incorrect coding=<encoding-name> at top of source (%s)" % msg)
def generate_struct_union_definition(self, entry, code):
type = entry.type
scope = type.scope
if scope:
header, footer = \
self.sue_header_footer(type, type.kind, type.cname)
code.putln("")
code.putln(header)
var_entries = scope.var_entries
if not var_entries:
error(
entry.pos,
"Empty struct or union definition not allowed outside a"
" 'cdef extern from' block")
for attr in var_entries:
code.putln("%s;" % attr.type.declaration_code(attr.cname))
code.putln(footer)
def visit_ParallelStatNode(self, node):
if self.parallel_block_stack:
node.parent = self.parallel_block_stack[-1]
else:
node.parent = None
nested = False
if node.is_prange:
if not node.parent:
node.is_parallel = True
else:
node.is_parallel = (node.parent.is_prange or not
node.parent.is_parallel)
nested = node.parent.is_prange
else:
node.is_parallel = True
# Note: nested with parallel() blocks are handled by
# ParallelRangeTransform!
# nested = node.parent
nested = node.parent and node.parent.is_prange
self.parallel_block_stack.append(node)
nested = nested or len(self.parallel_block_stack) > 2
if not self.parallel_errors and nested:
error(node.pos,
"Parallel nesting not supported due to bugs in gcc 4.5")
self.parallel_errors = True
if node.is_prange:
child_attrs = node.child_attrs
node.child_attrs = ['body', 'target', 'args']
self.visitchildren(node)
node.child_attrs = child_attrs
self.parallel_block_stack.pop()
if node.else_clause:
node.else_clause = self.visit(node.else_clause)
else:
self.visitchildren(node)
self.parallel_block_stack.pop()
self.parallel_errors = False
return node
def visit_ParallelStatNode(self, node):
if self.parallel_block_stack:
node.parent = self.parallel_block_stack[-1]
else:
node.parent = None
nested = False
if node.is_prange:
if not node.parent:
node.is_parallel = True
else:
node.is_parallel = (node.parent.is_prange
or not node.parent.is_parallel)
nested = node.parent.is_prange
else:
node.is_parallel = True
# Note: nested with parallel() blocks are handled by
# ParallelRangeTransform!
# nested = node.parent
nested = node.parent and node.parent.is_prange
self.parallel_block_stack.append(node)
nested = nested or len(self.parallel_block_stack) > 2
if not self.parallel_errors and nested:
error(node.pos,
"Parallel nesting not supported due to bugs in gcc 4.5")
self.parallel_errors = True
if node.is_prange:
child_attrs = node.child_attrs
node.child_attrs = ['body', 'target', 'args']
self.visitchildren(node)
node.child_attrs = child_attrs
self.parallel_block_stack.pop()
if node.else_clause:
node.else_clause = self.visit(node.else_clause)
else:
self.visitchildren(node)
self.parallel_block_stack.pop()
self.parallel_errors = False
return node
def generate_struct_union_definition(self, entry, code):
type = entry.type
scope = type.scope
if scope:
header, footer = \
self.sue_header_footer(type, type.kind, type.cname)
code.putln("")
code.putln(header)
var_entries = scope.var_entries
if not var_entries:
error(entry.pos,
"Empty struct or union definition not allowed outside a"
" 'cdef extern from' block")
for attr in var_entries:
code.putln(
"%s;" %
attr.type.declaration_code(attr.cname))
code.putln(footer)
def check_c_classes(self): # Performs post-analysis checking and finishing up of extension types # being implemented in this module. This is called only for the main # .pyx file scope and its associated .pxd scope, not for cimported .pxd # scopes. # # Checks all extension types declared in this scope to # make sure that: # # * The extension type is implemented # * All required object and type names have been specified or generated # * All non-inherited C methods are implemented # # Also allocates a name for the vtable if needed. # debug_check_c_classes = 0 if debug_check_c_classes: print "Scope.check_c_classes: checking scope", self.qualified_name for entry in self.c_class_entries: if debug_check_c_classes: print "...entry", entry.name, entry print "......type =", entry.type print "......visibility =", entry.visibility type = entry.type name = entry.name visibility = entry.visibility # Check defined if not type.scope: error(entry.pos, "C class '%s' is declared but not defined" % name) # Generate typeobj_cname if visibility <> 'extern' and not type.typeobj_cname: type.typeobj_cname = self.mangle(Naming.typeobj_prefix, name) ## Generate typeptr_cname #type.typeptr_cname = self.mangle(Naming.typeptr_prefix, name) # Check C methods defined if type.scope: for method_entry in type.scope.cfunc_entries: if not method_entry.is_inherited and not method_entry.func_cname: error(method_entry.pos, "C method '%s' is declared but not defined" % method_entry.name) # Allocate vtable name if necessary if type.vtabslot_cname: #print "ModuleScope.check_c_classes: allocating vtable cname for", self ### type.vtable_cname = self.mangle(Naming.vtable_prefix, entry.name)
def declare_var(self,
name,
type,
pos,
cname=None,
visibility='private',
is_cdef=0):
# Add an entry for an attribute.
if not cname:
cname = name
entry = self.declare(name, cname, type, pos)
entry.is_variable = 1
self.var_entries.append(entry)
if type.is_pyobject:
error(pos, "C struct/union member cannot be a Python object")
if visibility <> 'private':
error(pos,
"C struct/union member cannot be declared %s" % visibility)
return entry
def visit_ParallelStatNode(self, node):
if self.parallel_block_stack:
node.parent = self.parallel_block_stack[-1]
else:
node.parent = None
nested = False
if node.is_prange:
if not node.parent:
node.is_parallel = True
else:
node.is_parallel = node.parent.is_prange or not node.parent.is_parallel
nested = node.parent.is_prange
else:
node.is_parallel = True
# Note: nested with parallel() blocks are handled by
# ParallelRangeTransform!
# nested = node.parent
nested = node.parent and node.parent.is_prange
self.parallel_block_stack.append(node)
nested = nested or len(self.parallel_block_stack) > 2
if not self.parallel_errors and nested and not node.is_prange:
error(node.pos, "Only prange() may be nested")
self.parallel_errors = True
if node.is_prange:
child_attrs = node.child_attrs
node.child_attrs = ["body", "target", "args"]
self.visitchildren(node)
node.child_attrs = child_attrs
self.parallel_block_stack.pop()
if node.else_clause:
node.else_clause = self.visit(node.else_clause)
else:
self.visitchildren(node)
self.parallel_block_stack.pop()
self.parallel_errors = False
return node
def find_submodule(self, module_name):
entry = self.entries.get(module_name, None)
if entry and entry.as_module:
return entry.as_module
else:
# TODO: fix find_submodule control flow so that we're not
# expected to create a submodule here (to protect CythonScope's
# possible immutability). Hack ourselves out of the situation
# for now.
raise error((StringSourceDescriptor(u"cython", u""), 0, 0),
"cython.%s is not available" % module_name)
def declare_var(self,
name,
type,
pos,
cname=None,
visibility='private',
is_cdef=0):
# Add an entry for an attribute.
if self.defined:
error(
pos, "C attributes cannot be added in implementation part of"
" extension type")
if get_special_method_signature(name):
error(pos,
"The name '%s' is reserved for a special method." % name)
if not cname:
cname = name
entry = self.declare(name, cname, type, pos)
entry.visibility = visibility
entry.is_variable = 1
self.var_entries.append(entry)
if type.is_pyobject:
self.has_pyobject_attrs = 1
if visibility not in ('private', 'public', 'readonly'):
error(
pos, "Attribute of extension type cannot be declared %s" %
visibility)
if visibility in ('public', 'readonly'):
if type.pymemberdef_typecode:
self.public_attr_entries.append(entry)
else:
error(
pos,
"C attribute of type '%s' cannot be accessed from Python" %
type)
if visibility == 'public' and type.is_extension_type:
error(
pos,
"Non-generic Python attribute cannot be exposed for writing from Python"
)
return entry
def generate_enum_definition(self, entry, code):
type = entry.type
name = entry.cname or entry.name or ""
header, footer = \
self.sue_header_footer(type, "enum", name)
code.putln("")
code.putln(header)
enum_values = entry.enum_values
if not enum_values:
error(
entry.pos, "Empty enum definition not allowed outside a"
" 'cdef extern from' block")
else:
last_entry = enum_values[-1]
for value_entry in enum_values:
if value_entry.value == value_entry.name:
value_code = value_entry.cname
else:
value_code = ("%s = %s" %
(value_entry.cname, value_entry.value))
if value_entry is not last_entry:
value_code += ","
code.putln(value_code)
code.putln(footer)
def find_module(self, module_name, pos):
error("cython.%s is not available" % module_name, pos)
def visit_YieldExprNode(self, node):
if self.parallel_block_stack:
error(node.pos, "Yield not allowed in parallel sections")
return node
def check_for_illegal_incomplete_ctypedef(self, typedef_flag, pos):
if typedef_flag and not self.in_cinclude:
error(pos,
"Forward-referenced type must use 'cdef', not 'ctypedef'")
