Merge branch 'feature/json-fix' into develop

lib/serialisation/BaseIO.h

@@ -86,7 +86,7 @@ namespace Grid {
                                       or element<T>::is_number;
   };
   
-  // Vector flatening utility class ////////////////////////////////////////////
+  // Vector flattening utility class ////////////////////////////////////////////
   // Class to flatten a multidimensional std::vector
   template <typename V>
   class Flatten

lib/serialisation/JSON_IO.cc

@@ -42,6 +42,7 @@ JSONWriter::~JSONWriter(void)
 
   // write prettified JSON to file
   std::ofstream os(fileName_);
+  //std::cout << "JSONWriter::~JSONWriter" << std::endl;
   os << std::setw(2) << json::parse(ss_.str()) << std::endl;
 }
 
@@ -56,6 +57,7 @@ void JSONWriter::push(const string &s)
 
 void JSONWriter::pop(void)
 {
+  //std::cout << "JSONWriter::pop" << std::endl;
   delete_comma();
   ss_ << "},";
 }
@@ -67,20 +69,22 @@ void JSONWriter::delete_comma()
   ss_.str(dlast);
 }
 
+
 // here we are hitting a g++ bug (Bug 56480)
 // compiles fine with clang
 // have to wrap in the Grid namespace
 // annoying, but necessary for TravisCI
 namespace Grid
 {
-  template<>
+  void JSONWriter::writeDefault(const std::string &s,	const std::string &x)
-  void JSONWriter::writeDefault(const std::string &s,
-				const std::string &x)
   {
+    //std::cout << "JSONWriter::writeDefault(string) : " << s <<  std::endl;
+    std::ostringstream os;
+    os << std::boolalpha << x;
     if (s.size())
-      ss_ << "\""<< s << "\" : \"" << x << "\" ," ; 
+      ss_ << "\""<< s << "\" : \"" << os.str() << "\" ," ;
     else
-      ss_ << "\"" << x << "\" ," ;
+     ss_ << os.str() << " ," ;
   }
 }// namespace Grid 
 
@@ -138,6 +142,7 @@ void JSONReader::pop(void)
 
 bool JSONReader::nextElement(const std::string &s)
 {
+  // Work in progress
   // JSON dictionaries do not support multiple names 
   // Same name objects must be packed in vectors
   ++it_;

lib/serialisation/JSON_IO.h

@@ -58,10 +58,15 @@ namespace Grid
     void writeDefault(const std::string &s, const std::complex<U> &x);
     template <typename U>
     void writeDefault(const std::string &s, const std::vector<U> &x);
+    template <typename U, typename P>
+    void writeDefault(const std::string &s, const std::pair<U,P> &x);
 
     template<std::size_t N>
     void writeDefault(const std::string &s, const char(&x)[N]);
 
+    void writeDefault(const std::string &s, const std::string &x);
+
+
   private:
     void delete_comma();
     std::string         fileName_;
@@ -82,6 +87,8 @@ namespace Grid
     void readDefault(const std::string &s, std::complex<U> &output);
     template <typename U>
     void readDefault(const std::string &s, std::vector<U> &output);
+    template <typename U, typename P>
+    void readDefault(const std::string &s, std::pair<U,P> &output);
   private:
     json                jobject_; // main object
     json                jcur_;  // current json object
@@ -106,7 +113,7 @@ namespace Grid
   template <typename U>
   void JSONWriter::writeDefault(const std::string &s, const U &x)
   {
-    //std::cout << "JSONReader::writeDefault(U) : " << s <<  std::endl;
+    //std::cout << "JSONWriter::writeDefault(U) : " << s <<  " " << x <<std::endl;
     std::ostringstream os;
     os << std::boolalpha << x;
     if (s.size())
@@ -118,7 +125,7 @@ namespace Grid
   template <typename U>
   void JSONWriter::writeDefault(const std::string &s, const std::complex<U> &x)
   {
-    //std::cout << "JSONReader::writeDefault(complex) : " << s <<  std::endl;
+    //std::cout << "JSONWriter::writeDefault(complex) : " << s <<  " " << x <<  std::endl;
     std::ostringstream os;
     os << "["<< std::boolalpha << x.real() << ", " << x.imag() << "]";
     if (s.size())
@@ -127,10 +134,22 @@ namespace Grid
      ss_ << os.str() << " ," ;
   }
 
+  template <typename U, typename P>
+  void JSONWriter::writeDefault(const std::string &s, const std::pair<U,P> &x)
+  {
+    //std::cout << "JSONWriter::writeDefault(pair) : " << s <<  " " << x <<  std::endl;
+    std::ostringstream os;
+    os << "["<< std::boolalpha << "\""<< x.first << "\" , \"" << x.second << "\" ]";
+    if (s.size())
+      ss_ << "\""<< s << "\" : " << os.str() << " ," ;
+    else
+     ss_ << os.str() << " ," ;
+  }
+
   template <typename U>
   void JSONWriter::writeDefault(const std::string &s, const std::vector<U> &x)
   {
-    //std::cout << "JSONReader::writeDefault(vec U) : " << s <<  std::endl;
+    //std::cout << "JSONWriter::writeDefault(vec U) : " << s <<  std::endl;
 
     if (s.size())
       ss_ << " \""<<s<<"\" : [";
@@ -146,12 +165,12 @@ namespace Grid
 
   template<std::size_t N>
   void JSONWriter::writeDefault(const std::string &s, const char(&x)[N]){
-    //std::cout << "JSONReader::writeDefault(char U) : " << s <<  std::endl;
+    //std::cout << "JSONWriter::writeDefault(char U) : " << s <<  "  " << x << std::endl;
 
     if (s.size())
-    ss_ << "\""<< s << "\" : \"" << x << "\" ," ;
+      ss_ << "\""<< s << "\" : \"" << x << "\" ," ;
     else
-    ss_ << "\"" << x << "\" ," ;
+      ss_ << "\"" << x << "\" ," ;
   }
 
   // Reader template implementation ////////////////////////////////////////////
@@ -173,11 +192,35 @@ namespace Grid
 
   }
 
+  // Reader template implementation ////////////////////////////////////////////
+  template <typename U, typename P>
+  void JSONReader::readDefault(const std::string &s, std::pair<U,P> &output)
+  {
+    U first;
+    P second;
+    json j;
+    if (s.size()){
+      //std::cout << "JSONReader::readDefault(pair) : " << s << "  |  "<< jcur_[s] << std::endl;
+      j = jcur_[s];
+    } else {
+      j = jcur_;
+    }
+    json::iterator it = j.begin();
+    jcur_ = *it;
+    read("", first);
+    it++;
+    jcur_ = *it;
+    read("", second);
+    output = std::pair<U,P>(first,second);
+  }
+
+
+
   template <typename U>
   void JSONReader::readDefault(const std::string &s, std::complex<U> &output)
   {
     U tmp1, tmp2;
-    //std::cout << "JSONReader::readDefault( complex U) : " << s << "  :  "<< jcur_ << std::endl;
+    //std::cout << "JSONReader::readDefault(complex U) : " << s << "  :  "<< jcur_ << std::endl;
     json j = jcur_;
     json::iterator it = j.begin();
     jcur_ = *it;

tests/IO/Test_serialisation.cc

@@ -29,7 +29,6 @@ Author: Peter Boyle <paboyle@ph.ed.ac.uk>
     /*  END LEGAL */
 #include <Grid/Grid.h>
 
-
 using namespace Grid;
 using namespace Grid::QCD;
 
@@ -151,6 +150,11 @@ int main(int argc,char **argv)
   ioTest<TextWriter, TextReader>("iotest.dat", obj, "text   (object)           ");
   ioTest<TextWriter, TextReader>("iotest.dat", vec, "text   (vector of objects)");
   ioTest<TextWriter, TextReader>("iotest.dat", pair, "text   (pair of objects)");
+  //// text
+  ioTest<JSONWriter, JSONReader>("iotest.json", obj,  "JSON   (object)           ");
+  ioTest<JSONWriter, JSONReader>("iotest.json", vec,  "JSON   (vector of objects)");
+  ioTest<JSONWriter, JSONReader>("iotest.json", pair, "JSON   (pair of objects)");
+
   //// HDF5
 #undef HAVE_HDF5
 #ifdef HAVE_HDF5
@@ -201,8 +205,10 @@ int main(int argc,char **argv)
     JSONWriter JW("bother.json");
 
     // test basic type writing
+    myenum a = myenum::red;
     push(JW,"BasicTypes");
     write(JW,std::string("i16"),i16);
+    write(JW,"myenum",a);
     write(JW,"u16",u16);
     write(JW,"i32",i32);
     write(JW,"u32",u32);
@@ -213,13 +219,14 @@ int main(int argc,char **argv)
     write(JW,"b",b);
     pop(JW);
 
+
     // test serializable class writing
     myclass obj(1234); // non-trivial constructor
+    std::cout << obj << std::endl;
     std::cout << "-- serialisable class writing to 'bother.json'..." << std::endl;
     write(JW,"obj",obj);
     JW.write("obj2", obj);
 
-    std::cout << obj << std::endl;
 
     std::vector<myclass> vec;
     vec.push_back(myclass(1234));
@@ -229,6 +236,7 @@ int main(int argc,char **argv)
 
   }
 
+
   {
     JSONReader RD("bother.json");
     myclass jcopy1;
@@ -239,6 +247,7 @@ int main(int argc,char **argv)
     std::cout << jcopy1 << std::endl << jveccopy1 << std::endl;
   }
  
+
 /*
   // This is still work in progress
   {