openfst-1.2.6/src/include/fst/script/compile.h
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00001 00002 /// Licensed under the Apache License, Version 2.0 (the "License"); 00003 /// you may not use this file except in compliance with the License. 00004 /// You may obtain a copy of the License at 00005 /// 00006 /// http://www.apache.org/licenses/LICENSE-2.0 00007 /// 00008 /// Unless required by applicable law or agreed to in writing, software 00009 /// distributed under the License is distributed on an "AS IS" BASIS, 00010 /// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00011 /// See the License for the specific language governing permissions and 00012 /// limitations under the License. 00013 /// 00014 /// Copyright 2005-2010 Google, Inc. 00015 /// Author: jpr@google.com (Jake Ratkiewicz) 00016 00017 #ifndef FST_SCRIPT_COMPILE_H_ 00018 #define FST_SCRIPT_COMPILE_H_ 00019 00020 #include <fst/script/arg-packs.h> 00021 #include <fst/script/fst-class.h> 00022 #include <fst/script/compile-impl.h> 00023 00024 namespace fst { 00025 namespace script { 00026 00027 /// Note: it is safe to pass these strings as references because 00028 /// this struct is only used to pass them deeper in the call graph. 00029 /// Be sure you understand why this is so before using this struct 00030 /// for anything else! 00031 struct FstCompileArgs { 00032 fst::istream &istrm; 00033 const string &source; 00034 const string &dest; 00035 const string &fst_type; 00036 const fst::SymbolTable *isyms; 00037 const fst::SymbolTable *osyms; 00038 const fst::SymbolTable *ssyms; 00039 const bool accep; 00040 const bool ikeep; 00041 const bool okeep; 00042 const bool nkeep; 00043 const bool allow_negative_labels; 00044 00045 FstCompileArgs(istream &istrm, const string &source, const string &dest, 00046 const string &fst_type, const fst::SymbolTable *isyms, 00047 const fst::SymbolTable *osyms, 00048 const fst::SymbolTable *ssyms, 00049 bool accep, bool ikeep, bool okeep, bool nkeep, 00050 bool allow_negative_labels = false) : 00051 istrm(istrm), source(source), dest(dest), fst_type(fst_type), 00052 isyms(isyms), osyms(osyms), ssyms(ssyms), accep(accep), ikeep(ikeep), 00053 okeep(okeep), nkeep(nkeep), 00054 allow_negative_labels(allow_negative_labels) { } 00055 }; 00056 00057 template<class Arc> 00058 void CompileFst(FstCompileArgs *args) { 00059 using fst::FstCompiler; 00060 using fst::Convert; 00061 using fst::Fst; 00062 00063 FstCompiler<Arc> fstcompiler(args->istrm, args->source, args->isyms, 00064 args->osyms, args->ssyms, 00065 args->accep, args->ikeep, 00066 args->okeep, args->nkeep, 00067 args->allow_negative_labels); 00068 00069 const Fst<Arc> *fst = &fstcompiler.Fst(); 00070 if (args->fst_type != "vector") { 00071 fst = Convert<Arc>(*fst, args->fst_type); 00072 if (!fst) { 00073 LOG(FATAL) << "Failed to convert FST to desired type: " 00074 << args->fst_type; 00075 } 00076 } 00077 00078 fst->Write(args->dest); 00079 } 00080 00081 void CompileFst(istream &istrm, const string &source, const string &dest, 00082 const string &fst_type, const string &arc_type, 00083 const SymbolTable *isyms, 00084 const SymbolTable *osyms, const SymbolTable *ssyms, 00085 bool accep, bool ikeep, bool okeep, bool nkeep, 00086 bool allow_negative_labels); 00087 00088 } /// namespace script 00089 } /// namespace fst 00090 00091 #endif /// FST_SCRIPT_COMPILE_H_ 00092
