1 #include <libxml++/libxml++.h>
8 //! convert string to upper case
10 toupper(std::string s) {
11 for (unsigned i=0; i<s.length(); ++i) s[i]=toupper(s[i]);
15 //! replace all characters f by r in string s
17 replace(std::string s, char f, char r) {
18 for (unsigned i=0; i<s.length(); ++i) if (s[i]==f) s[i]=r;
22 //! strip prefix from string s
24 \return string s without prefix or an empty string on error
27 strip(std::string s, std::string prefix)
30 if ( (prefix.length()>s.length() ) || ( std::string(s,0,prefix.length())!=prefix ) ) return error;
31 return std::string(s, prefix.length(), s.length()-prefix.length());
34 //! extract group from attributes
36 extract_group(const std::string &attrs)
40 std::string to_match("gccxml(libt2n-");
41 std::string::size_type p(attrs.find(to_match));
42 if (p==std::string::npos) return error;
43 std::string group(attrs, p+to_match.length(), attrs.length());
44 p=group.find_first_of(')');
45 assert(p!=std::string::npos);
46 return std::string(group,0,p);
49 //! get child element by id
51 \return pointer to element having id or null on error
52 \todo find libxmlpp pendant
54 const xmlpp::Element* get_element_by_id(const xmlpp::Element* element, const std::string &id)
56 const xmlpp::Attribute* cid = element->get_attribute("id");
57 if ( cid && ( cid->get_value() == id)) return element;
59 //Recurse through child nodes:
60 xmlpp::Node::NodeList list = element->get_children();
61 for(xmlpp::Node::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
63 const xmlpp::Element* element = dynamic_cast<const xmlpp::Element*>(*iter);
65 const xmlpp::Element* match = get_element_by_id(element, id);
66 if (match) return match;
72 //! get namespace by id
74 \return namespace name or empty string on error
76 std::string get_namespace(const xmlpp::Element* root, const std::string &id)
79 const xmlpp::Element* element(get_element_by_id(root, id));
80 if ((!element)||(!element->get_attribute("name"))) return error;
81 return element->get_attribute("name")->get_value();
85 std::string get_default_group(const xmlpp::Element* root) {
88 if ( (root->get_attribute("name"))
89 && (root->get_attribute("attributes"))
90 && (root->get_name() == "Typedef")
91 && (root->get_attribute("name")->get_value()=="libt2n_default_group"))
92 return extract_group(root->get_attribute("attributes")->get_value());
94 //Recurse through child nodes:
95 xmlpp::Node::NodeList list = root->get_children();
96 for(xmlpp::Node::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
98 if (const xmlpp::Element* elem=dynamic_cast<const xmlpp::Element*>(*iter)) {
99 std::string ret(get_default_group(elem));
100 if (!ret.empty()) return ret;
109 std::string noref_name;
110 bool operator==(const type_info& o) {return (name==o.name) && (noref_name == o.noref_name);}
111 std::string noref() const {return noref_name.empty() ? name : noref_name;}
114 std::ostream &operator<<(std::ostream &o, const type_info &t) {
121 \return type name or empty string on error
123 type_info get_type(const xmlpp::Element* root, const std::string &id)
126 const xmlpp::Element* element(get_element_by_id(root, id));
127 if (!element) return error;
129 // TODO: not yet complete
130 // if we recurse - when do we stop?
131 // if it is a typedef? yes? (hmm if the typedef is in the file parsed this will not work)
133 // TODO: const and reference types handling is a ugly hack
135 std::string tag(element->get_name());
136 if (tag=="ReferenceType") {
137 assert(element->get_attribute("type"));
138 type_info ret(get_type(root, element->get_attribute("type")->get_value()));
139 if (ret==error) return error;
140 // at the moment we only support const &
141 // todo: nice error message!
142 if ((ret.noref_name=strip(ret.name,"const ")).empty()) return error;
143 ret.name=ret.name+"&";
145 }else if (tag=="CvQualifiedType") {
146 assert(element->get_attribute("type"));
147 type_info ret(get_type(root, element->get_attribute("type")->get_value()));
148 if (ret==error) return error;
149 ret.name=std::string("const ")+ret.name;
153 assert(element->get_attribute("name"));
155 if (element->get_attribute("context"))
156 ret.name=get_namespace(root, element->get_attribute("context")->get_value())+"::";
157 ret.name+=element->get_attribute("name")->get_value();
163 typedef std::list<std::pair<std::string, type_info> > Args;
171 std::string ret_classname() const {
172 return name+mangled+"_res";
174 std::string cmd_classname() const {
175 return name+mangled+"_cmd";
179 std::ostream &operator<<(std::ostream &o, const t2n_procedure::Args &args) {
180 for (t2n_procedure::Args::const_iterator it=args.begin();it!=args.end();++it) {
181 if (it!=args.begin()) o << ", ";
182 o << it->second << " " << it->first;
187 std::ostream &operator<<(std::ostream &o, const t2n_procedure &f) {
188 o << f.ret_type << " " << f.name << "(" << f.args << ")";
195 Parser(const std::string &fname) : m_fname(fname) {}
197 std::list<t2n_procedure> get_procedures() {
198 xmlpp::DomParser parser;
199 // parser.set_validate();
200 parser.set_substitute_entities(); //We just want the text to be resolved/unescaped automatically.
201 parser.parse_file(m_fname);
205 const xmlpp::Node* pNode = parser.get_document()->get_root_node(); //deleted by DomParser.
206 const xmlpp::Element* root = dynamic_cast<const xmlpp::Element*>(pNode);
214 std::list<t2n_procedure> m_procedures;
216 void parse_function(const xmlpp::Element* root, const xmlpp::Node* node) {
217 const xmlpp::Element* element = dynamic_cast<const xmlpp::Element*>(node);
218 if (!element) return;
220 const xmlpp::Attribute* attributes = element->get_attribute("attributes");
221 const xmlpp::Attribute* name = element->get_attribute("name");
222 const xmlpp::Attribute* mangled = element->get_attribute("mangled");
223 const xmlpp::Attribute* returns = element->get_attribute("returns");
224 if ((!attributes)||(!name)||(!mangled)||(!returns)) return;
226 // check wether the procedure is marked (TODO: improve)
227 // attributes are speparated by spaces?
230 f.group=extract_group(attributes->get_value());
231 if (f.group.empty()) return;
232 // todo: handle default group
233 if (f.group=="default") f.group=get_default_group(root);
235 // we need the return type
236 f.ret_type=get_type(root, returns->get_value());
237 f.name=name->get_value();
238 f.mangled=mangled->get_value();
240 xmlpp::Node::NodeList list = node->get_children("Argument");
241 for(xmlpp::Node::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
243 const xmlpp::Element* arg = dynamic_cast<const xmlpp::Element*>(*iter);
245 assert(arg->get_name() == "Argument");
246 assert(arg->get_attribute("name"));
247 assert(arg->get_attribute("type"));
248 f.args.push_back(std::pair<std::string, type_info>(arg->get_attribute("name")->get_value(), get_type(root, arg->get_attribute("type")->get_value())));
251 std::cerr << "Found function: " << f << std::endl;
252 m_procedures.push_back(f);
255 void visit_node(const xmlpp::Element* root, const xmlpp::Node* node = NULL, unsigned int indentation = 0)
257 if (!node) node=root;
259 const xmlpp::ContentNode* nodeContent = dynamic_cast<const xmlpp::ContentNode*>(node);
260 const xmlpp::TextNode* nodeText = dynamic_cast<const xmlpp::TextNode*>(node);
261 const xmlpp::CommentNode* nodeComment = dynamic_cast<const xmlpp::CommentNode*>(node);
263 if(nodeText && nodeText->is_white_space()) //Let's ignore the indenting - you don't always want to do this.
266 std::string nodename = node->get_name();
268 if(!nodeText && !nodeComment && !nodename.empty()) //Let's not say "name: text".
270 if (node->get_name() == "Function") parse_function(root, node);
274 //Recurse through child nodes:
275 xmlpp::Node::NodeList list = node->get_children();
276 for(xmlpp::Node::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
278 visit_node(root, *iter, indentation + 2); //recursive
285 std::set<std::string>
286 used_groups(const std::list<t2n_procedure> &funcs) {
287 typedef std::set<std::string> Groups;
289 for (std::list<t2n_procedure>::const_iterator it=funcs.begin();it!=funcs.end();++it)
290 // since we use std::set each group is inserted only once
291 groups.insert(it->group);
295 void output_common_hpp(std::ostream &o, const std::list<t2n_procedure> &procs) {
296 std::set<std::string> groups(used_groups(procs));
298 for (std::set<std::string>::iterator it=groups.begin();it!=groups.end();++it) {
299 o << "class cmd_group_" << *it << " : public libt2n::command\n"
302 << " friend class boost::serialization::access;\n"
303 << " template<class Archive>\n"
304 << " void serialize(Archive & ar, const unsigned int version)\n"
305 << " {ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(libt2n::command);}\n"
309 for (std::list<t2n_procedure>::const_iterator it=procs.begin();it!=procs.end();++it) {
310 o << "class " << it->ret_classname() << " : public libt2n::result\n"
313 << " " << it->ret_type << " res;\n"
314 << " friend class boost::serialization::access;\n"
315 << " template<class Archive>\n"
316 << " void serialize(Archive & ar, const unsigned int version)\n"
318 << " ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(libt2n::result);\n"
319 << " ar & BOOST_SERIALIZATION_NVP(res);\n"
322 << " " << it->ret_classname() << "() {}\n"
323 << " " << it->ret_classname() << "(const " << it->ret_type << " &_res) : res(_res) {}\n"
324 << " " << it->ret_type << " get_data() { return res; }\n"
327 for (std::list<t2n_procedure>::const_iterator it=procs.begin();it!=procs.end();++it) {
328 o << "class " << it->cmd_classname() << " : public " << "cmd_group_" << it->group << "\n"
331 for (t2n_procedure::Args::const_iterator ait=it->args.begin();ait!=it->args.end();++ait) {
332 o << " " << ait->second.noref() << " " << ait->first << ";\n";
334 o << " friend class boost::serialization::access;\n"
335 << " template<class Archive>\n"
336 << " void serialize(Archive & ar, const unsigned int version)\n"
338 << " ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(cmd_group_" << it->group << ");\n";
339 for (t2n_procedure::Args::const_iterator ait=it->args.begin();ait!=it->args.end();++ait) {
340 o << " ar & BOOST_SERIALIZATION_NVP(" << ait->first << ");\n";
343 // default constructor
347 << " " << it->cmd_classname() << "() {}\n";
349 // constructor taking all arguments
350 o << " " << it->cmd_classname() << "(";
351 for (t2n_procedure::Args::const_iterator ait=it->args.begin();ait!=it->args.end();++ait) {
352 if (ait!=it->args.begin()) o << ", ";
353 o << ait->second << " _" << ait->first;
356 for (t2n_procedure::Args::const_iterator ait=it->args.begin();ait!=it->args.end();++ait) {
357 if (ait!=it->args.begin()) o << ", ";
358 o << ait->first << "(_" << ait->first << ")";
361 << " libt2n::result* operator()();\n"
366 void output_common_cpp(std::ostream &o, const std::list<t2n_procedure> &procs, const std::string &common_hpp) {
367 std::set<std::string> groups(used_groups(procs));
369 o << "#include \"" << common_hpp << "\"\n"
370 << "#include <boost/serialization/export.hpp>\n"
372 << "/* register types with boost serialization */\n";
373 for (std::set<std::string>::iterator it=groups.begin();it!=groups.end();++it) {
374 o << "BOOST_CLASS_EXPORT(cmd_group_" << *it << ")\n";
376 for (std::list<t2n_procedure>::const_iterator it=procs.begin();it!=procs.end();++it) {
377 o << "BOOST_CLASS_EXPORT("<<it->ret_classname()<<")\n"
378 << "BOOST_CLASS_EXPORT("<<it->cmd_classname()<<")\n";
382 void output_client_hpp(std::ostream &o, const std::list<t2n_procedure> &procs) {
383 std::set<std::string> groups(used_groups(procs));
385 o << "#include <command_client.hxx>\n";
387 for (std::set<std::string>::iterator it=groups.begin();it!=groups.end();++it) {
388 o << "class cmd_group_" << *it << "_client : public libt2n::command_client\n"
391 << "cmd_group_" << *it << "_client(libt2n::client_connection &_c,\n"
392 << " long long _command_timeout_usec=command_timeout_usec_default,\n"
393 << " long long _hello_timeout_usec=hello_timeout_usec_default)\n"
394 << " : libt2n::command_client(_c,_command_timeout_usec,_hello_timeout_usec)\n"
396 for (std::list<t2n_procedure>::const_iterator pit=procs.begin();pit!=procs.end();++pit) {
397 if (pit->group==*it) {
398 o << " " << *pit << ";\n";
405 void output_client_cpp(std::ostream &o, const std::list<t2n_procedure> &procs, const std::string &common_hpp, const std::string &common_cpp, const std::string &client_hpp) {
406 std::set<std::string> groups(used_groups(procs));
408 o << "#include \"" << client_hpp << "\"\n"
409 << "#include \"" << common_hpp << "\"\n"
411 for (std::list<t2n_procedure>::const_iterator it=procs.begin();it!=procs.end();++it) {
412 o << "libt2n::result* " << it->cmd_classname() << "::operator()() { return NULL; }\n";
415 for (std::set<std::string>::iterator it=groups.begin();it!=groups.end();++it) {
416 for (std::list<t2n_procedure>::const_iterator pit=procs.begin();pit!=procs.end();++pit) {
417 if (pit->group==*it) {
418 o << pit->ret_type << " cmd_group_" << *it << "_client::" << pit->name << "(" << pit->args << ")\n"
420 << " libt2n::result_container rc;\n"
421 << " send_command(new " << pit->cmd_classname() << "(";
422 for (t2n_procedure::Args::const_iterator ait=pit->args.begin();ait!=pit->args.end();++ait) {
423 if (ait!=pit->args.begin()) o << ", ";
427 << " " << pit->ret_classname() << "* res=dynamic_cast<" << pit->ret_classname() << "*>(rc.get_result());\n"
428 << " if (!res) throw libt2n::t2n_communication_error(\"result object of wrong type\");\n"
429 << " return res->get_data();\n"
435 // include in this compilation unit to ensure the compilation unit is used
437 // http://www.google.de/search?q=g%2B%2B+static+initializer+in+static+library
438 o << "#include \"" << common_cpp << "\"\n";
441 void output_server_cpp(std::ostream &o, const std::list<t2n_procedure> &procs, const std::string &common_hpp, const std::string &common_cpp) {
442 o << "#include \"" << common_hpp << "\"\n";
444 for (std::list<t2n_procedure>::const_iterator it=procs.begin();it!=procs.end();++it) {
446 o << "libt2n::result* " << it->cmd_classname() << "::operator()() { return new " << it->ret_classname() << "(" << it->name << "(";
447 for (t2n_procedure::Args::const_iterator ait=it->args.begin();ait!=it->args.end();++ait) {
448 if (ait!=it->args.begin()) o << ", ";
453 o << "#include \"" << common_cpp << "\"\n";
456 struct header_file : public std::ofstream
458 header_file(const char* fname) : std::ofstream(fname) {
459 std::cerr << "create header: '" << fname << "'" << std::endl;
460 std::string macro(replace(toupper(fname),'.','_'));
461 *this << "// automatically generated code - do not edit\n" << std::endl;
462 *this << "#ifndef " << macro << "\n"
463 << "#define " << macro << "\n";
466 *this << "#endif" << std::endl;
470 struct cpp_file : public std::ofstream
472 cpp_file(const char* fname) : std::ofstream(fname) {
473 std::cerr << "create cpp: '" << fname << "'" << std::endl;
474 *this << "// automatically generated code - do not edit\n" << std::endl;
478 std::list<std::string>
479 get_includes(const std::string &fname)
481 // grep "#include" fname
482 std::ifstream in(fname.c_str());
484 std::list<std::string> ret;
485 while (std::getline(in,line)) {
486 if (line.find("#include")!=std::string::npos)
493 paste_includes(std::ostream &o, std::list<std::string> &i)
496 << "// copied includes begin" << std::endl;
497 for (std::list<std::string>::const_iterator it=i.begin(); it!=i.end(); ++it)
498 o << *it << std::endl;
499 o << "// copied includes end" << std::endl
503 struct RemoveGenerated
505 RemoveGenerated(const std::string &_prefix) : prefix(_prefix) {}
506 bool operator()(const std::string &s) const {
507 return (s.find(prefix+"common.hxx")!=std::string::npos);
509 const std::string &prefix;
513 main(int argc, char* argv[])
516 std::cerr << "Usage: " << argv[0] << " header-file gccxml-file outputprefix" << std::endl;
519 std::string headerfile(argv[1]);
520 std::string xmlfile(argv[2]);
521 std::string prefix(argv[3]);
522 std::list<std::string> includes(get_includes(headerfile));
523 remove_if(includes.begin(), includes.end(), RemoveGenerated(prefix));
524 includes.erase(remove_if(includes.begin(), includes.end(), RemoveGenerated(prefix)), includes.end());
526 paste_includes(std::cerr, includes);
528 Parser parser(xmlfile);
529 std::list<t2n_procedure> procedures(parser.get_procedures());
531 std::cerr << "Procedures:" << std::endl;
532 for (std::list<t2n_procedure>::const_iterator it=procedures.begin();it!=procedures.end();++it)
533 std::cerr << *it << ";" << std::endl;
535 std::set<std::string> groups(used_groups(procedures));
536 std::cerr << "Used groups:" << std::endl;
537 for (std::set<std::string>::const_iterator it=groups.begin();it!=groups.end();++it)
538 std::cerr << *it << std::endl;
540 std::string common_hpp_fname(prefix+"common.hxx");
541 std::string common_cpp_fname(prefix+"common.cpp");
542 std::string client_hpp_fname(prefix+"client.hxx");
543 std::string client_cpp_fname(prefix+"client.cpp");
544 std::string server_cpp_fname(prefix+"server.cpp");
546 header_file common_hpp(common_hpp_fname.c_str());
547 common_hpp << "#include \"codegen-stubhead.hxx\"\n";
548 paste_includes(common_hpp, includes);
550 output_common_hpp(common_hpp, procedures);
552 cpp_file common_cpp(common_cpp_fname.c_str());
553 output_common_cpp(common_cpp, procedures, common_hpp_fname);
555 header_file client_hpp(client_hpp_fname.c_str());
556 // we can't paste the includes before codegen-stubhead.hxx was included
557 // but we also do not want to include codegen-stubhead.hxx in this file
558 // paste_includes(client_hpp, includes);
559 output_client_hpp(client_hpp, procedures);
561 cpp_file client_cpp(client_cpp_fname.c_str());
562 output_client_cpp(client_cpp, procedures, common_hpp_fname, common_cpp_fname, client_hpp_fname);
564 cpp_file server_cpp(server_cpp_fname.c_str());
565 output_server_cpp(server_cpp, procedures, common_hpp_fname, common_cpp_fname);