bindings/python/ns3modulescan.py
author Gustavo J. A. M. Carneiro <gjc@inescporto.pt>
Fri, 29 Aug 2008 14:56:24 +0100
changeset 3567 728eb3f583b3
parent 3537 ab1673dcdf58
child 3753 a84a48233eb3
permissions -rw-r--r--
Require new PyBindGen (now ignores the badly scanned anonymous containers that cause problems on cygwin) and rescan API.
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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#! /usr/bin/env python
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import sys
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import os.path
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import pybindgen.settings
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from pybindgen.gccxmlparser import ModuleParser, PygenClassifier, PygenSection, WrapperWarning
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from pybindgen.typehandlers.codesink import FileCodeSink
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from pygccxml.declarations import templates
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from pygccxml.declarations.class_declaration import class_t
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from pygccxml.declarations.calldef import free_function_t, member_function_t, constructor_t
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## we need the smart pointer type transformation to be active even
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## during gccxml scanning.
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import ns3modulegen_core_customizations
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## silence gccxmlparser errors; we only want error handling in the
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## generated python script, not while scanning.
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class ErrorHandler(pybindgen.settings.ErrorHandler):
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    def handle_error(self, dummy_wrapper, dummy_exception, dummy_traceback_):
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        return True
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pybindgen.settings.error_handler = ErrorHandler()
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import warnings
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warnings.filterwarnings(category=WrapperWarning, action='ignore')
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type_annotations = {
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    '::ns3::RefCountBase': {
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        'incref_method': 'Ref',
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        'decref_method': 'Unref',
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        'peekref_method': 'GetReferenceCount',
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        'automatic_type_narrowing': 'true',
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        },
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    '::ns3::Object': {
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        'incref_method': 'Ref',
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        'decref_method': 'Unref',
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        'peekref_method': 'GetReferenceCount',
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        'automatic_type_narrowing': 'true',
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        },
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    '::ns3::Packet': {
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        'incref_method': 'Ref',
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        'decref_method': 'Unref',
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        'peekref_method': 'GetReferenceCount',
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        },
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    '::ns3::CallbackImplBase': {
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        'incref_method': 'Ref',
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        'decref_method': 'Unref',
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        'peekref_method': 'GetReferenceCount',
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        },
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    '::ns3::PacketMetadata': {
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        'ignore': None,
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        },
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    '::ns3::AttributeChecker': {
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        'automatic_type_narrowing': 'true',
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        'allow_subclassing': 'false',
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        },
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    '::ns3::AttributeValue': {
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        'automatic_type_narrowing': 'true',
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        'allow_subclassing': 'false',
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        },
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    'ns3::RandomVariable::RandomVariable(ns3::RandomVariableBase const & variable) [constructor]': {
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        'ignore': None,
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        },
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    'ns3::RandomVariableBase * ns3::RandomVariable::Peek() const [member function]': {
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        'ignore': None,
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        },
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    'void ns3::RandomVariable::GetSeed(uint32_t * seed) const [member function]': {
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        'params': {'seed':{'direction':'out',
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                           'array_length':'6'}}
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        },
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    'bool ns3::TypeId::LookupAttributeByName(std::string name, ns3::TypeId::AttributeInfo * info) const [member function]': {
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        'params': {'info':{'transfer_ownership': 'false'}}
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        },
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    'static bool ns3::TypeId::LookupByNameFailSafe(std::string name, ns3::TypeId * tid) [member function]': {
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        'params': {'tid': {'transfer_ownership': 'false'}}
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        },
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    'bool ns3::TraceSourceAccessor::ConnectWithoutContext(ns3::ObjectBase * obj, ns3::CallbackBase const & cb) const [member function]': {
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        'params': {'obj': {'transfer_ownership':'false'}}
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        },
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    'bool ns3::TraceSourceAccessor::Connect(ns3::ObjectBase * obj, std::string context, ns3::CallbackBase const & cb) const [member function]': {
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        'params': {'obj': {'transfer_ownership':'false'}}
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        },
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    'bool ns3::TraceSourceAccessor::DisconnectWithoutContext(ns3::ObjectBase * obj, ns3::CallbackBase const & cb) const [member function]': {
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        'params': {'obj': {'transfer_ownership':'false'}}
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        },
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    'bool ns3::TraceSourceAccessor::Disconnect(ns3::ObjectBase * obj, std::string context, ns3::CallbackBase const & cb) const [member function]': {
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        'params': {'obj': {'transfer_ownership':'false'}}
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        },
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    'bool ns3::AttributeAccessor::Set(ns3::ObjectBase * object, ns3::AttributeValue const & value) const [member function]': {
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        'params': {'object': {'transfer_ownership':'false'}}
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        },
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    'ns3::EmpiricalVariable::EmpiricalVariable(ns3::RandomVariableBase const & variable) [constructor]': {
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        'ignore': None
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        },
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    'static ns3::AttributeList * ns3::AttributeList::GetGlobal() [member function]': {
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        'caller_owns_return': 'false'
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        },
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    'void ns3::CommandLine::Parse(int argc, char * * argv) const [member function]': {
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        'ignore': None # manually wrapped
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        },
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    'extern void ns3::PythonCompleteConstruct(ns3::Ptr<ns3::Object> object, ns3::TypeId typeId, ns3::AttributeList const & attributes) [free function]': {
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        'ignore': None # used transparently by, should not be wrapped
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        },
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    }
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def get_ns3_relative_path(path):
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    l = []
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    head = path
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    while head:
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        head, tail = os.path.split(head)
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        if tail == 'ns3':
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            return os.path.join(*l)
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        l.insert(0, tail)
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    raise AssertionError("is the path %r inside ns3?!" % path)
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def pre_scan_hook(dummy_module_parser,
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                  pygccxml_definition,
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                  global_annotations,
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                  parameter_annotations):
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    ns3_header = get_ns3_relative_path(pygccxml_definition.location.file_name)
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    ## Note: we don't include line numbers in the comments because
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    ## those numbers are very likely to change frequently, which would
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    ## cause needless changes, since the generated python files are
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    ## kept under version control.
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    #global_annotations['pygen_comment'] = "%s:%i: %s" % \
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    #    (ns3_header, pygccxml_definition.location.line, pygccxml_definition)
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    global_annotations['pygen_comment'] = "%s: %s" % \
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        (ns3_header, pygccxml_definition)
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    ## handle ns3::Object::GetObject (left to its own devices,
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    ## pybindgen will generate a mangled name containing the template
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    ## argument type name).
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    if isinstance(pygccxml_definition, member_function_t) \
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            and pygccxml_definition.parent.name == 'Object' \
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            and pygccxml_definition.name == 'GetObject':
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        template_args = templates.args(pygccxml_definition.demangled_name)
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        if template_args == ['ns3::Object']:
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            global_annotations['template_instance_names'] = 'ns3::Object=>GetObject'
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    ## Don't wrap Simulator::Schedule* (manually wrapped)
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    if isinstance(pygccxml_definition, member_function_t) \
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            and pygccxml_definition.parent.name == 'Simulator' \
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            and pygccxml_definition.name.startswith('Schedule'):
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        global_annotations['ignore'] = None
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    # unblock python threads for Simulator::Run
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    if isinstance(pygccxml_definition, member_function_t) \
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            and pygccxml_definition.parent.name == 'Simulator' \
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            and pygccxml_definition.name == 'Run':
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        global_annotations['unblock_threads'] = True
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    ## classes
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    if isinstance(pygccxml_definition, class_t):
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        # no need for helper classes to allow subclassing in Python, I think...
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        if pygccxml_definition.name.endswith('Helper'):
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            global_annotations['allow_subclassing'] = 'false'
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   163
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        if pygccxml_definition.decl_string.startswith('::ns3::Callback<'):
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            # manually handled in ns3modulegen_core_customizations.py
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            global_annotations['ignore'] = None
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            return
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        if pygccxml_definition.decl_string.startswith('::ns3::TracedCallback<'):
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            global_annotations['ignore'] = None
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            return
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   172
3408
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   173
        if pygccxml_definition.decl_string.startswith('::ns3::Ptr<'):
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            # handled by pybindgen "type transformation"
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            global_annotations['ignore'] = None
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            return
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        # table driven class customization
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        try:
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            annotations = type_annotations[pygccxml_definition.decl_string]
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        except KeyError:
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            pass
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        else:
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            global_annotations.update(annotations)
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   185
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    ## free functions
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    if isinstance(pygccxml_definition, free_function_t):
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   188
        if pygccxml_definition.name == 'PeekPointer':
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            global_annotations['ignore'] = None
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   190
            return
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   191
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    ## table driven methods/constructors/functions customization
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   193
    if isinstance(pygccxml_definition, (free_function_t, member_function_t, constructor_t)):
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   194
        try:
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            annotations = type_annotations[str(pygccxml_definition)]
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   196
        except KeyError:
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            pass
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   198
        else:
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            for key,value in annotations.items():
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                if key == 'params':
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                    parameter_annotations.update (value)
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                    del annotations['params']
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            global_annotations.update(annotations)
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   204
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   205
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   206
# def post_scan_hook(dummy_module_parser, dummy_pygccxml_definition, pybindgen_wrapper):
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#     ## classes
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#     if isinstance(pybindgen_wrapper, CppClass):
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#         if pybindgen_wrapper.name.endswith('Checker'):
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   210
#             print >> sys.stderr, "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!", pybindgen_wrapper
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#             #pybindgen_wrapper.set_instance_creation_function(AttributeChecker_instance_creation_function)
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   212
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   213
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def scan_callback_classes(module_parser, callback_classes_file):
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   215
    callback_classes_file.write("callback_classes = [\n")
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   216
    for cls in module_parser.module_namespace.classes(function=module_parser.location_filter,
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   217
                                                      recursive=False):
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   218
        if not cls.name.startswith("Callback<"):
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            continue
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        assert templates.is_instantiation(cls.decl_string), "%s is not a template instantiation" % cls
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   221
        dummy_cls_name, template_parameters = templates.split(cls.decl_string)
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   222
        callback_classes_file.write("    %r,\n" % template_parameters)
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   223
    callback_classes_file.write("]\n")
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   224
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   225
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   226
class MyPygenClassifier(PygenClassifier):
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    def __init__(self, headers_map):
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   228
        self.headers_map = headers_map
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   229
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   230
    def classify(self, pygccxml_definition):
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   231
        name = os.path.basename(pygccxml_definition.location.file_name)
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   232
        try:
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   233
            return self.headers_map[name]
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   234
        except KeyError:
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   235
            return '__main__'
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   236
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   237
3409
94ac3e381075 The 'everything.h' header file is only used for Python bindings and should be generated into bindings/python/, not ns3/.
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parents: 3408
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   238
def ns3_module_scan(top_builddir, pygen_file_name, everything_h):
3408
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parents:
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   239
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   240
    ns3_modules = eval(sys.stdin.read())
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   241
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   242
    ## do a topological sort on the modules graph
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   243
    from topsort import topsort
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   244
    graph = []
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   245
    for ns3_module_name, (ns3_module_deps, dummy) in ns3_modules.iteritems():
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parents:
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   246
        for dep in ns3_module_deps:
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   247
            graph.append((dep, ns3_module_name))
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   248
    sorted_ns3_modules = topsort(graph)
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94ac3e381075 The 'everything.h' header file is only used for Python bindings and should be generated into bindings/python/, not ns3/.
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parents: 3408
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    #print >> sys.stderr, "******* topological sort: ", sorted_ns3_modules
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    sections = [PygenSection('__main__', FileCodeSink(open(pygen_file_name, "wt")))]
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    headers_map = {} # header_name -> section_name
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    for ns3_module in sorted_ns3_modules:
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        section_name = "ns3_module_%s" % ns3_module.replace('-', '_')
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        file_name = os.path.join(os.path.dirname(pygen_file_name), "%s.py" % section_name)
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        sections.append(PygenSection(section_name, FileCodeSink(open(file_name, "wt")),
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                                     section_name + "__local"))
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        for header in ns3_modules[ns3_module][1]:
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            headers_map[header] = section_name
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    module_parser = ModuleParser('ns3', 'ns3')
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    module_parser.add_pre_scan_hook(pre_scan_hook)
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    #module_parser.add_post_scan_hook(post_scan_hook)
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    gccxml_options = dict(
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        include_paths=[top_builddir],
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         define_symbols={
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            #'NS3_ASSERT_ENABLE': None,
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            #'NS3_LOG_ENABLE': None,
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            }
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        )
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    module_parser.parse_init([everything_h],
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                             None, whitelist_paths=[top_builddir, os.path.dirname(everything_h)],
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                             #includes=['"ns3/everything.h"'],
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                             pygen_sink=sections,
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                             pygen_classifier=MyPygenClassifier(headers_map),
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                             gccxml_options=gccxml_options)
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    module_parser.scan_types()
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    callback_classes_file = open(os.path.join(os.path.dirname(pygen_file_name), "callbacks_list.py"), "wt")
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    scan_callback_classes(module_parser, callback_classes_file)
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    callback_classes_file.close()
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    module_parser.scan_methods()
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    module_parser.scan_functions()
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    module_parser.parse_finalize()
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    for section in sections:
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        section.code_sink.file.close()
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if __name__ == '__main__':
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    ns3_module_scan(sys.argv[1], sys.argv[3], sys.argv[2])
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