1 #include <msp/strings/format.h>
16 Set(T &r, const T &v): ref(r), orig(r) { r = v; }
17 ~Set() { ref = orig; }
20 bool signature_match(char s, char a)
24 if(s==Msp::DataFile::IntType::signature && a==Msp::DataFile::FloatType::signature)
29 bool signature_match(const string &st_sig, const string &act_sig)
33 else if(act_sig.size()==2 && act_sig[1]=='*')
35 for(string::const_iterator i=st_sig.begin(); i!=st_sig.end(); ++i)
41 else if(st_sig.size()==act_sig.size())
43 for(unsigned i=0; i<st_sig.size(); ++i)
44 if(!signature_match(st_sig[i], act_sig[i]))
59 class unknown_keyword: public runtime_error
62 unknown_keyword(const std::string &k):
66 virtual ~unknown_keyword() throw() { }
70 class invalid_signature: public runtime_error
73 invalid_signature(const std::string &k, const std::string &s):
74 runtime_error(format("%s %s", k, s))
77 virtual ~invalid_signature() throw() { }
83 check_sub_loads(false)
88 for(ActionMap::iterator i=actions.begin(); i!=actions.end(); ++i)
92 void Loader::load(Parser &p)
96 Statement st = p.parse();
103 void Loader::load(const Statement &st)
105 for(list<Statement>::const_iterator i=st.sub.begin(); i!=st.sub.end(); ++i)
110 void Loader::load_statement(const Statement &st)
112 Set<const Statement *> set_cst(cur_st, &st);
116 StatementKey key(st.keyword, st.get_signature());
118 if(!aux_loaders.empty() && !has_action(key))
120 for(list<Loader *>::const_iterator i=aux_loaders.begin(); i!=aux_loaders.end(); ++i)
121 if((*i)->has_action(key))
122 return (*i)->load_statement(st);
125 LoaderAction *act = find_action(key);
129 act->execute(*this, st);
130 if(check_sub_loads && !st.sub.empty() && !sub_loaded)
131 throw logic_error("substatements ignored");
134 catch(const data_error &)
138 catch(const exception &e)
140 throw data_error(st.source, st.line, e);
144 void Loader::load_sub_with(Loader &ldr)
147 throw logic_error("no current statement");
153 void Loader::add(const string &kwd, LoaderAction *act)
155 StatementKey key(kwd, (act ? act->get_signature() : "*"));
156 ActionMap::iterator i = actions.find(key);
166 void Loader::add_auxiliary_loader(Loader &ldr)
168 aux_loaders.push_back(&ldr);
171 bool Loader::has_action(const StatementKey &key) const
173 ActionMap::const_iterator i = actions.lower_bound(StatementKey(key.keyword, string()));
174 for(; (i!=actions.end() && i->first.keyword==key.keyword); ++i)
175 if(signature_match(key.signature, i->first.signature))
180 LoaderAction *Loader::find_action(const StatementKey &key) const
182 ActionMap::const_iterator begin = actions.lower_bound(StatementKey(key.keyword, string()));
183 ActionMap::const_iterator end = actions.upper_bound(StatementKey(key.keyword, "~"));
186 throw unknown_keyword(key.keyword);
188 for(ActionMap::const_iterator i=begin; i!=end; ++i)
189 if(signature_match(key.signature, i->first.signature))
192 throw invalid_signature(key.keyword, key.signature);
195 const string &Loader::get_source() const
198 throw logic_error("no current statement");
199 return cur_st->source;
202 } // namespace DataFile