#ifndef MODGMT_FUNC_H
#define MODGMT_FUNC_H
#include "modgmt_internals.h"
#include "modgmt_objects.h"
#include "modgmt_param.h"

const ObjectBase* GMT_Header(const ObjectList* input);
const ObjectBase* GMT_Footer(const ObjectList* input);
const ObjectBase* GMT_ColorGray(const ObjectList* input);
const ObjectBase* GMT_ColorRGB(const ObjectList* input);
const ObjectBase* GMT_ColorHSV(const ObjectList* input);
const ObjectBase* GMT_ColorCMYK(const ObjectList* input);
const ObjectBase* GMT_LayerShift(const ObjectList* input);

// Generic converting template
template<class Struct, class O>
class Convert2Struct
{
 public:
 template<class... Args>
 Struct operator()(const O* o, bool* suc, std::string& err, Args... args) const
 {
  Struct s;
  if(!s.Convert(o->Value(),err,args...)) *suc=false;
  return s;
 }
};
// Extract structure from corresponding class
template<class Struct>
class Convert2Struct<Struct, ObjectGMTClass<Struct> >
{
 public:
 template<class... Args>
 Struct operator()(const ObjectGMTClass<Struct>* o, bool* suc, std::string& err, Args... args) const { return o->Data(); } // Never return error
};

// Converting Int or Real to double
template<class O>
class Convert2Struct<double,O>
{
 public:
 double operator ()(const O* q, bool* suc, std::string& err) const {return q->Value();}
};
// Converting String to double
template<>
class Convert2Struct<double,ObjectString>
{
 public:
 double operator ()(const ObjectString* q, bool* suc, std::string& err) const
 {
  double d=0;
  bool res=str2double(q->Value(),&d);
  if(!res) err="Can't convert string "+q->Value()+" to double";
  *suc=(*suc) && res;
  return d;
 }
};

// Converting Int or Real to bool
template<class O>
class Convert2Struct<bool,O>
{
 public:
 bool operator ()(const O* q, bool* suc, std::string& err) const {return q->Value()!=0;}
};
// Converting String to bool
template<>
class Convert2Struct<bool,ObjectString>
{
 public:
 bool operator ()(const ObjectString* q, bool* suc, std::string& err) const
 {
  std::string v=q->Value();
  tolower(v);
  if("y"==v || "yes"==v || "on"==v || "t"==v || "true"==v || "1"==v) return true;
  if("n"==v || "no"==v || "off"==v || "f"==v || "false"==v || "0"==v) return false;
  err="Can't convert string "+q->Value()+" to bool";
  *suc=false;
  return false;
 }
};

// Get string
template<>
class Convert2Struct<std::string,ObjectString>
{
 public:
 std::string operator ()(const ObjectString* q, bool* suc, std::string& err) const {return q->Value();}
};


// Generic template for Converter class (using for read parameters)
template<class Struct, class... Types>
class BaseConverter
{
 template<class O> class StructConvertor: public Convert2Struct<Struct, O> {}; // Conversion type
 public:
 using ValueType=Struct;
 template<class... Args>
 ValueType Convert(const ObjectBase* ob, bool* res, std::string& err, Args... args)
 {
  OBTypeM<StructConvertor,Types...> gp(ob);
  switch(gp.Error())
  {
   case(OBTypeErr::OK): return gp(res,std::ref(err),args...);
   case(OBTypeErr::NULLPTR): {err="Can't convert zero ObjectBase pointer to something meaningfull"; break;}
   case(OBTypeErr::TYPEMISMATCH): {err="Can't convert "+ob->Type()+": type mismatch"; break;}
  }
  *res=false;
  return ValueType();
 }
};

// Generic template for Converter class with default value (using for read parameters)
template<class B>
class DefaultConverter: public B
{
 public:
 using ValueType=typename B::ValueType;
 private:
 ValueType def;
 public:
 DefaultConverter() = delete;

 template<class... Args>
 DefaultConverter(const ValueType& d, Args... args):B(args...),def(d) {}
 template<class... Args>
 DefaultConverter(ValueType&& d, Args... args):B(args...),def(std::move(d)) {}

 const ValueType& Default() const {return def;}
};

// Here we store type of Converter to type Struct. Generic template must never be used.
template<class Struct> class TypeStorage;
template<> class TypeStorage<double>                {public: typedef BaseConverter<double,               ObjectReal,  ObjectInt,   ObjectString                          > Converter;};
template<> class TypeStorage<bool>                  {public: typedef BaseConverter<bool,                 ObjectInt,   ObjectReal,  ObjectString                          > Converter;};
template<> class TypeStorage<std::string>           {public: typedef BaseConverter<std::string,          ObjectString                                                    > Converter;};
template<> class TypeStorage<struct gmt_coord>      {public: typedef BaseConverter<struct gmt_coord,     ObjectReal,  ObjectInt,   ObjectString,ObjectGMTCoord,ObjectList> Converter;};
template<> class TypeStorage<struct gmt_region>     {public: typedef BaseConverter<struct gmt_region,    ObjectList,  ObjectString,ObjectGMTRegion                       > Converter;};
template<> class TypeStorage<struct gmt_projection> {public: typedef BaseConverter<struct gmt_projection,ObjectList,  ObjectGMTProjection                                > Converter;};
template<> class TypeStorage<struct gmt_color>      {public: typedef BaseConverter<struct gmt_color,     ObjectList,  ObjectString,ObjectReal,ObjectInt, ObjectGMTColor  > Converter;};
template<> class TypeStorage<struct gmt_dash>       {public: typedef BaseConverter<struct gmt_dash,      ObjectString,ObjectGMTDash                                      > Converter;};
template<> class TypeStorage<struct gmt_pen>        {public: typedef BaseConverter<struct gmt_pen,       ObjectList,  ObjectString,ObjectReal,ObjectInt, ObjectGMTPen    > Converter;};
template<> class TypeStorage<struct gmt_font>       {public: typedef BaseConverter<struct gmt_font,      ObjectList,  ObjectString,ObjectReal,ObjectInt, ObjectGMTFont   > Converter;};
template<> class TypeStorage<struct gmt_layer>      {public: typedef BaseConverter<struct gmt_layer,     ObjectList,  ObjectGMTLayer                                     > Converter;};

// Default ObjectList converter
template<class Struct>
class Convert2Struct<Struct, ObjectList>
{
 public:
 template<class... Args>
 Struct operator()(const ObjectList* o, bool* suc, std::string& err, Args... args) const
 {
  Struct s;
  if(o->Size()!=1) {*suc=false; err="Can't convert list with more (or less) than one elements"; return s;}
  typename TypeStorage<Struct>::Converter a;
  s=a.Convert(o->At(0),suc,err,args...);
  return s;
 }
};

// Template for simple aliases of convertors
template<class Struct>
using Base2Struct=typename TypeStorage<Struct>::Converter;
// Template for simple aliases of convertors with default values
template<class Struct>
using Base2StructD=DefaultConverter<typename TypeStorage<Struct>::Converter>;

// Simple aliases of convertors
using Base2Double=Base2Struct<double>;
using Base2String=Base2Struct<std::string>;
using Base2Coord =Base2Struct<struct gmt_coord>;
using Base2Region=Base2Struct<struct gmt_region>;
using Base2Proj  =Base2Struct<struct gmt_projection>;

// Simple aliases of convertors with default values
using Base2StringD=Base2StructD<std::string>;

// Specialised convertors
// Convertor with default value for gmt_coord. Added constructor for creating default value from double argument
class Base2CoordD: public DefaultConverter<Base2Coord>
{
 static ValueType Def(double d)
 {
  ValueType v;
  std::string fake;
  v.Convert(d,fake);
  return v;
 }
 public:
 using ValueType=DefaultConverter<Base2Coord>::ValueType;
 Base2CoordD(double d):DefaultConverter<Base2Coord>(Def(d)) {}
};

// Convertors for double non-negative value
class Base2NonNeg: public Base2Double
{
 public:
 double Convert(const ObjectBase* ob, bool* res, std::string& err)
 {
  double t=Base2Double::Convert(ob,res,err);
  if(res && t<=0)
  {
   *res=false;
   err="Value mast be greater then zero";
  }
  return t;
 }
};
using Base2NonNegD=DefaultConverter<Base2NonNeg>;

// Conversion from List to GMTRegion
/*
Input:
1) One argument, Region. Return copy of this argument.
2) One argument, case insensitive string "global180" (global domain -R-180/180/-90/90), "global360" (global domain -R0/360/-90/90) or "global" (synonym of "global360").
3) One argument, list. Recursively calling GMT_Region.
4) Pairs list. Names are xb, xe, yb, ye, and, optionally, type="bbox|nobbox|global180|global360|global". Names are case sensitive, values can be Int, Real, String or GMTCoord.
If pair with name region (r) exists in list, when recursively calling GMT_Region on the value of this parameter, when modify it with specified parameters.
If argument with type Region exists in list, when copy it and modify with specified parameters.
5) 4 or 5 parameters. Fifth parameter can be "bbox" or "nobbox" (default). If fifth parameter is string "bbox", when first four parameters interprets as xb,yb,xe,ye, else as xb,xe,yb,ye.
*/
template<>
class Convert2Struct<struct gmt_region, ObjectList>
{
 public:
 struct gmt_region operator()(const ObjectList* input, bool* issuc) const
 {
  struct gmt_region r;
  auto size=input->Size();
  bool suc=true;

  if(1==size) // Cases 1, 2 and 3
  {
   Base2Region region(input,0);
   r=region(&suc);
   if(!suc) goto fail; // Conversion failed
   return r;
  }

  // Case 4
  {
   std::string type;
   bool typeexist=false;
   {
    Base2String t(input,"type");
    if(t.Exist())
    {
     type=t(&suc);
     tolower(type);
     if(!suc) goto fail; // Conversion failed
     typeexist=true;
    }
    else type="nobbox";
   }
   if(r.Convert(type)) return r; // type is one of "global*" string, we can return, becuse upd is irrelevant

   bool upd;
   {
    BaseMT2Region updarg(input,"r","region");
    r=updarg(&upd,&suc);
    if(upd && !suc) goto fail; // Conversion failed or too many arguments
    suc=true;
   }

   Base2Coord ixb(input,"xb"), ixe(input,"xe"), iyb(input,"yb"), iye(input,"ye");
   if(!(typeexist || ixb.Exist() || ixe.Exist() || iyb.Exist() || iye.Exist() || upd)) goto case5; // No named parameters, no update mode, possibly case 5
   struct gmt_coord xb,yb,xe,ye;
   bool isbbox=upd?(gmt_region::BBOX==r.type):false;

   if(typeexist)
   {
    if("bbox"==type) isbbox=true;
    if("nobbox"==type) isbbox=false;
    if("bbox"!=type && "nobbox"!=type) goto fail; // Unknown type
   }

   if(upd)
   {
    if(!ixb.Exist()) xb=r.xb;
    if(!ixe.Exist()) xe=r.xe;
    if(!iyb.Exist()) yb=r.yb;
    if(!iye.Exist()) ye=r.ye;
   }
   else suc=suc && ixb.Exist() && ixe.Exist() && iyb.Exist() && iye.Exist(); // In "new" mode all parameters must exists
   if(ixb.Exist()) xb=ixb(&suc);
   if(ixe.Exist()) xe=ixe(&suc);
   if(iyb.Exist()) yb=iyb(&suc);
   if(iye.Exist()) ye=iye(&suc);
   if(!suc) goto fail; // Something wrong
   if(!r.Convert(xb,xe,yb,ye,isbbox)) goto fail; // Conversion failed
   return r; // Case 3 with all parameters
  }

  case5:
  // Case 5
  if(4==size || 5==size)
  {
   bool isbbox=false;
   if(5==size)
   {
    Base2String type(input,4);
    std::string str=type(&suc);
    if(!suc) goto fail; // Wrong parameter
    tolower(str);
    if("bbox"!=str || "nobbox"!=str) goto fail; // Unknown fifth parameter
    if("bbox"==str) isbbox=true;
   }
   Base2Coord ixb(input,0), ixe(input,(isbbox?2:1)), iyb(input,(isbbox?1:2)), iye(input,3);
   struct gmt_coord xb=ixb(&suc),yb=iyb(&suc),xe=ixe(&suc),ye=iye(&suc);
   if(suc)
   {
    if(!r.Convert(xb,xe,yb,ye,isbbox)) goto fail; // Conversion failed
    return r; // Case 4 with all parameters
   }
  }

  fail:
  *issuc=false;
  return r; // Something go wrong
 }
};


// Converting List to GMTProjection
/*
Input:
1) One argument, Projection. Return copy of this argument.
2) One argument, list. Recursively calling GMT_Projection.
3) Pairs list. Names are projtype (type) (string), region (GMTRegion, string or list, which can be converted to GMTRegion),
width (or height) in centimeters (may be absent, default width is 10 cm) and projection-dependent parameters.
Pair with name region may absent, in this case search in list and using as region object with ObjectGMTRegion type.
If pair with name projection (p or proj) exists in list, when recursively calling GMT_Projection on the value of this parameter, when modify it with specified parameters.
If argument with type Projection exists in list, when copy it and modify with specified parameters.
4) 3 or more parameters. First parameter is projection type (string), second - width in centimeters,
third - region (any type which can be converted to GMTRegion), other parameters are projection-dependent.
Height can be set only in form 3.
*/
template<>
class Convert2Struct<struct gmt_projection, ObjectList>
{
 public:
 struct gmt_projection operator()(const ObjectList* input, bool* issuc) const
 {
  typedef SearchParameter<double,false,PMin<0> > BaseM2Nonneg;
  struct gmt_projection p;
  auto size=input->Size();
  bool suc=true;

  if(1==size) // Cases 1, and 2
  {
   Base2Projection proj(input,0);
   bool suc=true;
   p=proj(&suc);
   if(!suc) goto fail; // Conversion failed
   return p;
  }

  // Case 3
  {
   bool upd;
   bool changetype=false;
   {
    BaseMT2Projection updarg(input,"p","proj","projection");
    p=updarg(&upd,&suc);
    if(upd && !suc) goto fail; // Conversion failed or too many arguments
    suc=true;
   }

   // Try to set type of projection
   {
    BaseM2String type(input,"t","type","projtype");
    if(!(type.Exist() || upd)) goto case4; // No named parameter, not update mode, go to case 4
    // Check on redundant parameters
    if(type.Exist())
    {
     std::string typestr=type(&suc);
     if(!suc) goto fail; // Wrong parameter type
     if(!p.SetType(typestr)) goto fail; // Incorrect projection type
     changetype=true;
    }
   }

   // We need the region
   {
    BaseMT2Region region(input,"r","region");
    if(!(region.Exist() || upd)) goto fail; // Region must be defined in "new" mode
    if(region.Exist()) p.region=region(&suc);
    if(!suc) goto fail; // Conversion failed
   }

   // Get parameters of projection
   switch(p.proj)
   {
    case(gmt_projection::XY): // x Parameter height (by default equal width)
    {
     BaseM2Nonneg height(input,"height","h");
     if(height.Exist())
     {
      bool suc=true;
      p.x.height=height(&suc);
      if(!suc) goto fail; // Parsing error
     }
     else
     {
      BaseM2Nonneg width(input,"width","w");
      if(!width.Exist() && changetype) p.x.height=gmt_projection::default_width; // We ignore case when parameter width exists but have wrong type. It will be handled later.
      else
      {
       bool suc=true;
       p.x.height=width(&suc);
       if(!suc) goto fail; // Parsing error
      }
     }
     break;
    }
    case(gmt_projection::CYL_EQU): // q Parameters: central meridian (cmer, default is center of region), standart parallel (stpar, default is center of region)
    {
     Base2Coord cmer(input,"cmer"), stpar(input,"stpar");
     if(cmer.Exist())
     {
      bool suc=true;
      p.q.cmer=cmer(&suc);
      if(!suc) goto fail; // Parsing error
     }
     else if(changetype) p.q.cmer.Convert((p.region.xb+p.region.xe)*0.5);
     if(stpar.Exist())
     {
      bool suc=true;
      p.q.stpar=stpar(&suc);
      if(!suc) goto fail; // Parsing error
     }
     else if(changetype) p.q.stpar.Convert((p.region.yb+p.region.ye)*0.5);
     break;
    }
    case(gmt_projection::MERCATOR): // m Parameters: central meridian (cmer, default is center of region), standart parallel (stpar, default is center of region)
    {
     Base2Coord cmer(input,"cmer"), stpar(input,"stpar");
     if(cmer.Exist())
     {
      bool suc=true;
      p.m.cmer=cmer(&suc);
      if(!suc) goto fail; // Parsing error
     }
     else if(changetype) p.m.cmer.Convert((p.region.xb+p.region.xe)*0.5);
     if(stpar.Exist())
     {
      bool suc=true;
      p.m.stpar=stpar(&suc);
      if(!suc) goto fail; // Parsing error
     }
     else if(changetype) p.m.stpar.Convert((p.region.yb+p.region.ye)*0.5);
     break;
    }
    case(gmt_projection::TRANSMERCATOR): // t Parameters: central meridian (cmer, default is center of region), latitude of origin (orlat, default is 0.0), scale factor (scale, default is 1.0)
    {
     Base2Coord cmer(input,"cmer"), orlat(input,"orlat");
     Base2Double scale(input,"scale");
     if(cmer.Exist())
     {
      bool suc=true;
      p.t.cmer=cmer(&suc);
      if(!suc) goto fail; // Parsing error
     }
     else if(changetype) p.t.cmer.Convert((p.region.xb+p.region.xe)*0.5);
     if(orlat.Exist())
     {
      bool suc=true;
      p.t.orlat=orlat(&suc);
      if(!suc) goto fail; // Parsing error
     }
     else if(changetype) p.t.orlat.Convert(0.0);
     if(scale.Exist())
     {
      bool suc=true;
      p.t.scale=scale(&suc);
      if(!suc) goto fail; // Parsing error
     }
     else if(changetype) p.t.scale=1.0;
     break;
    }
    case(gmt_projection::OBLIQMERCATOR): // o Parameters: longitude of projection center (clon, default is center of region), latitude of projection center (clat, default is center of region). Other parameters may form one of three combinations and doesn't have default values. 1) Azimuth of the oblique equator (azimuth). 2) Longitude and latitude of second point on oblique equator (eqlon, eqlat). 3) Longitude and latitude of projection pole (polelon, polelat).
    {
     Base2Coord clon(input,"clon"), clat(input,"clat");
     Base2Coord azimuth(input,"azimuth"), eqlon(input,"eqlon"), eqlat(input,"eqlat"), polelon(input,"polelon"), polelat(input,"polelat");
     if(changetype) p.o.type=gmt_projection::OType::NOTDEF;
     if(clon.Exist())
     {
      bool suc=true;
      p.o.clon=clon(&suc);
      if(!suc) goto fail; // Parsing error
     }
     else if(changetype) p.o.clon.Convert((p.region.xb+p.region.xe)*0.5);
     if(clat.Exist())
     {
      bool suc=true;
      p.o.clat=clat(&suc);
      if(!suc) goto fail; // Parsing error
     }
     else if(changetype) p.o.clat.Convert((p.region.yb+p.region.ye)*0.5);
     // Variant 1
     if(azimuth)
     {
      bool suc=(gmt_projection::OType::NOTDEF==p.o.type); // If projection subtype already defined, this is an error
      p.o.type=gmt_projection::OType::A;
      p.o.azimuth=azimuth(&suc);
      if(!suc) goto fail; // Parsing error
     }
     if(eqlon && eqlat)
     {
      bool suc=(gmt_projection::OType::NOTDEF==p.o.type); // If projection subtype already defined, this is an error
      p.o.type=gmt_projection::OType::B;
      p.o.eqlon=eqlon(&suc);
      p.o.eqlat=eqlat(&suc);
      if(!suc) goto fail; // Parsing error
     }
     if(polelon && polelat)
     {
      bool suc=(gmt_projection::OType::NOTDEF==p.o.type); // If projection subtype already defined, this is an error
      p.o.type=gmt_projection::OType::C;
      p.o.polelon=polelon(&suc);
      p.o.polelat=polelat(&suc);
      if(!suc) goto fail; // Parsing error
     }
     if(gmt_projection::OType::NOTDEF==p.o.type) goto fail; // Insufficient data for this projection
     break;
    }
    case(gmt_projection::CASSINI): // c Parameters: longitude (clon, default is center of region) and latitude (clat, default is center of region) of central point.
    {
     Base2Coord clon(input,"clon"), clat(input,"clat");
     if(clon.Exist())
     {
      bool suc=true;
      p.c.clon=clon(&suc);
      if(!suc) goto fail; // Parsing error
     }
     else if(changetype) p.c.clon.Convert((p.region.xb+p.region.xe)*0.5);
     if(clat.Exist())
     {
      bool suc=true;
      p.c.clat=clat(&suc);
      if(!suc) goto fail; // Parsing error
     }
     else if(changetype) p.c.clat.Convert((p.region.yb+p.region.ye)*0.5);
     break;
    }
    case(gmt_projection::CYL_EQA): // y Parameters: central meridian (cmer, default is center of region), standart parallel (stpar, default is center of region)
    {
     Base2Coord cmer(input,"cmer"), stpar(input,"stpar");
     if(cmer.Exist())
     {
      bool suc=true;
      p.y.cmer=cmer(&suc);
      if(!suc) goto fail; // Parsing error
     }
     else if(changetype) p.y.cmer.Convert((p.region.xb+p.region.xe)*0.5);
     if(stpar.Exist())
     {
      bool suc=true;
      p.y.stpar=stpar(&suc);
      if(!suc) goto fail; // Parsing error
     }
     else if(changetype) p.y.stpar.Convert((p.region.yb+p.region.ye)*0.5);
     break;
    }
    case(gmt_projection::MILLER): // j Parameters: central meridian (cmer, default is center of region)
    {
     Base2Coord cmer(input,"cmer");
     if(cmer.Exist())
     {
      bool suc=true;
      p.j.cmer=cmer(&suc);
      if(!suc) goto fail; // Parsing error
     }
     else if(changetype) p.j.cmer.Convert((p.region.xb+p.region.xe)*0.5);
     break;
    }
    case(gmt_projection::CYL_STERE): // cyl_stere Parameters: central meridian (cmer, default is center of region), standart parallel (stpar, default is center of region)
    {
     Base2Coord cmer(input,"cmer"), stpar(input,"stpar");
     if(cmer.Exist())
     {
      bool suc=true;
      p.cyl_stere.cmer=cmer(&suc);
      if(!suc) goto fail; // Parsing error
     }
     else if(changetype) p.cyl_stere.cmer.Convert((p.region.xb+p.region.xe)*0.5);
     if(stpar.Exist())
     {
      bool suc=true;
      p.cyl_stere.stpar=stpar(&suc);
      if(!suc) goto fail; // Parsing error
     }
     else if(changetype) p.cyl_stere.stpar.Convert((p.region.yb+p.region.ye)*0.5);
     break;
    }
    default: goto fail; // Unknown projection
   }

   // Try to find width parameter
   if(!upd) p.width=p.default_width;
   {
    BaseM2Nonneg w(input,"width","w"),h(input,"height","h");
    bool suc=true;
    if(w.Exist()) // width is present
    {
     p.width=w(&suc);
     if(!suc) goto fail; // Parameter width exists, but can't be converted to double
     if(!ProjectionRealSize(p)) goto fail; // Something go wrong with determining real dimensions
    }
    else if(h.Exist()) // width is not present, but height is present
    {
     double hval=h(&suc);
     if(!suc) goto fail; // Parameter height exists, but can't be converted to double
     if(gmt_projection::XY==p.proj) p.width=hval; // For decart projection we use height as width if width is not specified
     if(!ProjectionRealSize(p,hval)) goto fail; // Something go wrong with determining real dimensions
    }
    else // No width, no height, using default or old width
    if(!ProjectionRealSize(p)) goto fail; // Something go wrong with determining real dimensions
   }
   return p; // All parameters setted
  }

  case4:

  // Case 4
  if(size>=3)
  {
   // First argument, try to set type of projection
   {
    Base2String type(input,0);
    bool suc=true;
    std::string typestr;
    typestr=type(&suc);
    if(!suc) goto fail; // No type - no projection
    if(!p.SetType(typestr)) goto fail; // Unknown type - no projection
   }
   // Second argument, set up width
   {
    Base2Double w(input,1);
    bool suc=true;
    p.width=w(&suc);
    if(!suc) goto fail; // Conversion failed, no width
   }
   // Third argument, set up region
   {
    Base2Region reg(input,2);
    bool suc=true;
    p.region=reg(&suc);
    if(!suc) goto fail; // Conversion failed, no region
   }

   // Projection specific parameters
   switch(p.proj)
   {
    case(gmt_projection::XY): // x Parameter 4 is height (by default equal width)
    {
     Base2Double height(input,3);
     if(height.Exist())
     {
      bool suc=true;
      p.x.height=height(&suc);
      if(!suc) goto fail; // Parsing error
     }
     else p.x.height=p.width;
     if(size>4) goto fail; // Unknown parameter(s)
     break;
    }
    case(gmt_projection::CYL_EQU): // q Parameters: 4 is central meridian (default is center of region), 5 is standart parallel (default is center of region)
    {
     Base2Coord cmer(input,3), stpar(input,4);
     if(cmer.Exist())
     {
      bool suc=true;
      p.q.cmer=cmer(&suc);
      if(!suc) goto fail; // Parsing error
     }
     else p.q.cmer.Convert((p.region.xb+p.region.xe)*0.5);
     if(stpar.Exist())
     {
      bool suc=true;
      p.q.stpar=stpar(&suc);
      if(!suc) goto fail; // Parsing error
     }
     else p.q.stpar.Convert((p.region.yb+p.region.ye)*0.5);
     if(size>5) goto fail; // Unknown parameter(s)
     break;
    }
    case(gmt_projection::MERCATOR): // m Parameters: 4 is central meridian (default is center of region), 5 is standart parallel (default is center of region)
    {
     Base2Coord cmer(input,3), stpar(input,4);
     if(cmer.Exist())
     {
      bool suc=true;
      p.m.cmer=cmer(&suc);
      if(!suc) goto fail; // Parsing error
     }
     else p.m.cmer.Convert((p.region.xb+p.region.xe)*0.5);
     if(stpar.Exist())
     {
      bool suc=true;
      p.m.stpar=stpar(&suc);
      if(!suc) goto fail; // Parsing error
     }
     else p.m.stpar.Convert((p.region.yb+p.region.ye)*0.5);
     if(size>5) goto fail; // Unknown parameter(s)
     break;
    }
    case(gmt_projection::TRANSMERCATOR): // t Parameters: 4 is central meridian (default is center of region), 5 is latitude of origin (default is 0.0), 6 is scale factor (default is 1.0)
    {
     Base2Coord cmer(input,3), orlat(input,4);
     Base2Double scale(input,5);
     if(cmer.Exist())
     {
      bool suc=true;
      p.t.cmer=cmer(&suc);
      if(!suc) goto fail; // Parsing error
     }
     else p.t.cmer.Convert((p.region.xb+p.region.xe)*0.5);
     if(orlat.Exist())
     {
      bool suc=true;
      p.t.orlat=orlat(&suc);
      if(!suc) goto fail; // Parsing error
     }
     else p.t.orlat.Convert(0.0);
     if(scale.Exist())
     {
      bool suc=true;
      p.t.scale=scale(&suc);
      if(!suc) goto fail; // Parsing error
     }
     else p.t.scale=1.0;
     if(size>6) goto fail; // Unknown parameter(s)
     break;
    }
    case(gmt_projection::OBLIQMERCATOR): // o There is no default values for this projection. Parameters: 4 is subtype ("a" or "azimuth", "b" or "equator", "c" or "pole"), 5 is longitude of projection center, 6 is latitude of projection center. Other parameters may form one of three combinations. 1) 7 is azimuth of the oblique equator. 2) Longitude and latitude of second point on oblique equator (7, 8). 3) Longitude and latitude of projection pole (7, 8).
    {
     if(size<4) goto fail; // Insufficient data for this projection
     OBType<ObjectString> stype(input->At(3));
     if(!stype) goto fail; // Incorrect parameter type
     std::string subtype=stype->Value();
     tolower(subtype);
     Base2Coord clon(input,4), clat(input,5);
     Base2Coord azimuth(input,6), eqlon(input,6), eqlat(input,7), polelon(input,6), polelat(input,7);
     p.o.type=gmt_projection::OType::NOTDEF;
     {
      bool suc=true;
      p.o.clon=clon(&suc);
      p.o.clat=clat(&suc);
      if(!suc) goto fail; // Parsing error
     }
     // Variant 1
     if("a"==subtype || "azimuth"==subtype)
     {
      p.o.type=gmt_projection::OType::A;
      bool suc=true;
      p.o.azimuth=azimuth(&suc);
      if(!suc) goto fail; // Parsing error
      if(size>7) goto fail; // Unknown parameter(s)
     }
     if("b"==subtype || "equator"==subtype)
     {
      p.o.type=gmt_projection::OType::B;
      bool suc=true;
      p.o.eqlon=eqlon(&suc);
      p.o.eqlat=eqlat(&suc);
      if(!suc) goto fail; // Parsing error
      if(size>8) goto fail; // Unknown parameter(s)
     }
     if("c"==subtype || "pole"==subtype)
     {
      p.o.type=gmt_projection::OType::C;
      bool suc=true;
      p.o.polelon=polelon(&suc);
      p.o.polelat=polelat(&suc);
      if(!suc) goto fail; // Parsing error
      if(size>8) goto fail; // Unknown parameter(s)
     }
     if(gmt_projection::OType::NOTDEF==p.o.type) goto fail; // Insufficient data for this projection
     break;
    }
    case(gmt_projection::CASSINI): // c Parameters: longitude (4, default is center of region) and latitude (5, default is center of region) of central point.
    {
     Base2Coord clon(input,3), clat(input,4);
     if(clon.Exist())
     {
      bool suc=true;
      p.c.clon=clon(&suc);
      if(!suc) goto fail; // Parsing error
     }
     else p.c.clon.Convert((p.region.xb+p.region.xe)*0.5);
     if(clat.Exist())
     {
      bool suc=true;
      p.c.clat=clat(&suc);
      if(!suc) goto fail; // Parsing error
     }
     else p.c.clat.Convert((p.region.yb+p.region.ye)*0.5);
     if(size>5) goto fail; // Unknown parameter(s)
     break;
    }
    case(gmt_projection::CYL_EQA): // y Parameters: central meridian (4, default is center of region), standart parallel (5, default is center of region)
    {
     Base2Coord cmer(input,3), stpar(input,4);
     if(cmer.Exist())
     {
      bool suc=true;
      p.y.cmer=cmer(&suc);
      if(!suc) goto fail; // Parsing error
     }
     else p.y.cmer.Convert((p.region.xb+p.region.xe)*0.5);
     if(stpar.Exist())
     {
      bool suc=true;
      p.y.stpar=stpar(&suc);
      if(!suc) goto fail; // Parsing error
     }
     else p.y.stpar.Convert((p.region.yb+p.region.ye)*0.5);
     if(size>5) goto fail; // Unknown parameter(s)
     break;
    }
    case(gmt_projection::MILLER): // j Parameters: central meridian (4, default is center of region)
    {
     Base2Coord cmer(input,3);
     if(cmer.Exist())
     {
      bool suc=true;
      p.j.cmer=cmer(&suc);
      if(!suc) goto fail; // Parsing error
     }
     else p.j.cmer.Convert((p.region.xb+p.region.xe)*0.5);
     if(size>4) goto fail; // Unknown parameter(s)
     break;
    }
    case(gmt_projection::CYL_STERE): // cyl_stere Parameters: central meridian (3, default is center of region), standart parallel (4, default is center of region)
    {
     Base2Coord cmer(input,3), stpar(input,4);
     if(cmer.Exist())
     {
      bool suc=true;
      p.cyl_stere.cmer=cmer(&suc);
      if(!suc) goto fail; // Parsing error
     }
     else p.cyl_stere.cmer.Convert((p.region.xb+p.region.xe)*0.5);
     if(stpar.Exist())
     {
      bool suc=true;
      p.cyl_stere.stpar=stpar(&suc);
      if(!suc) goto fail; // Parsing error
     }
     else p.cyl_stere.stpar.Convert((p.region.yb+p.region.ye)*0.5);
     if(size>5) goto fail; // Unknown parameter(s)
     break;
    }
    default: goto fail; // Unknown projection
   }
   if(ProjectionRealSize(p)) return p;
  }

  fail:
  *issuc=false;
  return p; // Something go wrong
 }
};

// Helper types
typedef SearchParameterWDefO<double,DoubleDefaultVal<>,false,PMin<0>,PMax<255> > Base2RGB;
typedef SearchParameterWDefO<double,DoubleDefaultVal<>,false,PMin<0>,PMax<360> > Base2Hue;
typedef SearchParameterWDefO<double,DoubleDefaultVal<>,false,PMin<0>,PMax<1  > > Base2SV;
typedef SearchParameterWDefO<double,DoubleDefaultVal<>,false,PMin<0>,PMax<100> > Base2CMYK;
typedef SearchParameterWDefO<double,DoubleDefaultVal<>,false,PMin<0>,PMax<100> > Base2Transp;

typedef SearchParameter<double,false,PMin<0>,PMax<255> > BaseM2RGB;
typedef SearchParameter<double,false,PMin<0>,PMax<360> > BaseM2Hue;
typedef SearchParameter<double,false,PMin<0>,PMax<1  > > BaseM2SV;
typedef SearchParameter<double,false,PMin<0>,PMax<100> > BaseM2CMYK;
typedef SearchParameter<double,false,PMin<0>,PMax<100> > BaseM2Transp;

// Converting List to GMTColor
/*
Input:
1) One argument, Color. Return copy of this argument.
2) One argument, list. Recursively calling GMT_Color.
3) Pairs list. Names are gray (grey), r(red),g(green),b(blue), h(hue),s(sat,saturation),v(value), c(cyan),m(magenta),y(yellow),k(black) and t(transp,transparency).
The different color models can't be mixed.
Gray, r, g, b are doubles in the range 0-255, h is double in the range 0-360, s and v are doubles in the range 0-1 and c, m, y, k and transparency are doubles in the range 0-100. Default value for all parameters is 0.
If pair with name color exists in list, when recursively calling GMT_Color on the value of this parameter, when modify it with specified parameters.
If argument with type Color exists in list, when copy it and modify with specified parameters. In both cases color model changing as specified by parameters.
4) One argument, interprets as gray.
5) Three arguments, interprets as r, g, b.
6) Four arguments, interprets as c, m, y, k.
Transparency or HSV model can be set only in form 3.
*/
template<>
class Convert2Struct<struct gmt_color, ObjectList>
{
 public:
 struct gmt_color operator()(const ObjectList* input, bool* issuc) const
 {
  struct gmt_color c;
  auto size=input->Size();

  if(1==size) // Cases 1, 2 and 4
  {
   Base2Color color(input,0);
   bool suc=true;
   c=color(&suc);
   if(!suc) goto fail; // Conversion failed
   return c;
  }

  // Case 3
  {
   bool cmodset=false;
   bool upd;
   {
    BaseMT2Color updarg(input,"color");
    bool suc=true;
    c=updarg(&upd,&suc);
    if(upd && !suc) goto fail; // Conversion failed or too many arguments
   }
   if(!upd)
   {
    // default color is black
    c.transparency=0;
    c.model=gmt_color::GRAY;
    c.gray=0.0;
   }

   {
    BaseM2Transp t(input,"t","transp","transparency");
    if(t.Exist())
    {
     bool suc=true;
     c.transparency=t(&suc);
     if(!suc) goto fail; // Parsing error
    }
   }

   // GRAY
   {
    BaseM2RGB g(input,"gray","grey");
    if(g.Exist())
    {
     if(cmodset) goto fail; // Model already set
     bool suc=true;
     c.model=gmt_color::GRAY;
     c.gray=g(&suc); // Update mode ignored in this case
     if(!suc) goto fail; // Parsing error
     cmodset=true;
    }
   }

   // RGB
   {
    BaseM2RGB r(input,"r","red"), g(input,"g","green"), b(input,"b","blue");
    if(r.Exist() || g.Exist() || b.Exist())
    {
     if(cmodset) goto fail; // Model already set
     bool suc=true;
     c.ToRGB();
     if(r.Exist()) c.r=r(&suc);
     if(g.Exist()) c.g=g(&suc);
     if(b.Exist()) c.b=b(&suc);
     if(!suc) goto fail; // Parsing error
     cmodset=true;
    }
   }

   // HSV
   {
    BaseM2Hue h(input,"h","hue");
    BaseM2SV s(input,"s","sat","saturation"), v(input,"v","val","value");
    if(h.Exist() || s.Exist() || v.Exist())
    {
     if(cmodset) goto fail; // Model already set
     bool suc=true;
     c.ToHSV();
     if(h.Exist()) c.hue=h(&suc);
     if(s.Exist()) c.saturation=s(&suc);
     if(v.Exist()) c.value=v(&suc);
     if(!suc) goto fail; // Parsing error
     cmodset=true;
    }
   }

   // CMYK
   {
    BaseM2CMYK cc(input,"c","cyan"), m(input,"m","magenta"), y(input,"y","yellow"), k(input,"k","black");
    if(cc.Exist() || m.Exist() || y.Exist() || k.Exist())
    {
     if(cmodset) goto fail; // Model already set
     bool suc=true;
     c.ToCMYK();
     if(cc.Exist()) c.cyan=cc(&suc);
     if(m.Exist()) c.magenta=m(&suc);
     if(y.Exist()) c.yellow=y(&suc);
     if(k.Exist()) c.black=k(&suc);
     if(!suc) goto fail; // Parsing error
     cmodset=true;
    }
   }
   if(cmodset || upd) return c; // Color created or updated
  }

  // Case 5
  if(3==size)
  {
   Base2RGB r(input,0), g(input,1), b(input,2);
   c.model=gmt_color::RGB;
   bool suc=true;
   c.r=r(&suc);
   c.g=g(&suc);
   c.b=b(&suc);
   if(!suc) goto fail; // Parsing error
   return c;
  }

  // Case 6
  if(4==size)
  {
   Base2CMYK cc(input,0), m(input,1), y(input,2), k(input,3);
   c.model=gmt_color::CMYK;
   bool suc=true;
   c.cyan=cc(&suc);
   c.magenta=m(&suc);
   c.yellow=y(&suc);
   c.black=k(&suc);
   if(!suc) goto fail; // Parsing error
   return c;
  }

  fail:
  *issuc=false;
  return c; // Something go wrong
 }
};

// Helper types
typedef SearchParameterWDefO<double,DoubleDefaultVal<>,false,PMin<0> > Base2Width;
typedef SearchParameter<double,false,PMin<0> > BaseM2Width;

// Converting List to GMTPen
/*
Input:
1) One argument, Pen. Return copy of this argument.
2) One argument, list. Recursively calling GMT_Pen.
3) Pairs list. Names are width (w), color(c), dash(f). Default values is 1 for width, black for color and solid for dash.
If pair with name pen(p) exists in list, when recursively calling GMT_Line on the value of this parameter, when modify it with specified parameters.
If argument with type Pen exists in list, when copy it and modify with specified parameters.
Instead of color and dash unnamed parameters with Color and Dash types may be used.
4) One argument, interprets as width of black solid line.
5) Two arguments, interprets as width and color of solid line.
6) Three arguments, interprets as width, color and dash.
*/

template<>
class Convert2Struct<struct gmt_pen, ObjectList>
{
 public:

 struct gmt_pen operator()(const ObjectList* input, bool* issuc) const
 {
  struct gmt_pen p;
  auto size=input->Size();

  if(1==size) // Cases 1, 2 and 4
  {
   Base2Pen pen(input,0);
   bool suc=true;
   p=pen(&suc);
   if(!suc) goto fail; // Conversion failed
   return p;
  }

  // Case 3
  {
   bool casevalid=false;
   bool upd;
   {
    BaseMT2Pen updarg(input,"pen","p");
    bool suc=true;
    p=updarg(&upd,&suc);
    if(upd && !suc) goto fail; // Conversion failed or too many arguments
   }

   if(!upd)
   {
    // default pen is solid black 1mm width
    p.width=gmt_pen::default_width;
    p.color.Convert(0);
    p.dash.Clear();
   }

   {
    BaseM2Width w(input,"w","width");
    if(w.Exist())
    {
     bool suc=true;
     p.width=w(&suc);
     if(!suc) goto fail; // Parsing error
     casevalid=true;
    }
   }

   // Color
   {
    BaseMT2Color color(input,"color","c");
    if(color.Exist())
    {
     bool suc=true;
     p.color=color(&suc);
     if(!suc) goto fail;  // Parsing error
     casevalid=true;
    }
   }

   // Dash
   {
    BaseMT2Dash dash(input,"dash","d");
    if(dash.Exist())
    {
     bool suc=true;
     p.dash=dash(&suc);
     if(!suc) goto fail;  // Parsing error
     p.dash.width=p.width;
     casevalid=true;
    }
   }

   if(casevalid || upd) return p; // Pen created or updated
  }

  // Case 5 and 6
  if(2==size || 3==size)
  {
   Base2Width w(input,0);
   Base2Color c(input,1);
   Base2Dash d(input,2);
   bool suc=true;
   p.width=w(&suc);
   p.color=c(&suc);
   if(!suc) goto fail; // Something wrong
   p.dash=d(&suc,p.width);
   if(!suc) goto fail; // Something wrong
   return p;
  }

  fail:
  *issuc=false;
  return p; // Something go wrong
 }
};


// Converting List to GMTFont
/*
Input:
1) One argument, Font. Return copy of this argument.
2) One argument, list. Recursively calling GMT_Font.
3) Pairs list. Names are size (s), family (f) and color(c). Default values is 12pt for size, Times-Roman for family and black for color.
If pair with name font exists in list, when recursively calling GMT_Font on the value of this parameter, when modify it with specified parameters.
If argument with type Font exists in list, when copy it and modify with specified parameters.
Instead of color unnamed parameter with Color type may be used.
4) One numeric argument, interprets as size of Times-Roman black font.
5) One string argument, interprets as [size][,family][,color] or [family][,color].
6) Two arguments, interprets as size and family of black font.
7) Three arguments, interprets as size, family and color.
*/

template<>
class Convert2Struct<struct gmt_font, ObjectList>
{
 public:

 struct gmt_font operator()(const ObjectList* input, bool* issuc) const
 {
  struct gmt_font f;
  auto size=input->Size();

  if(1==size) // Cases 1, 2, 4 and 5
  {
   Base2Font font(input,0);
   bool suc=true;
   f=font(&suc);
   if(!suc) goto fail; // Conversion failed
   return f;
  }

  // Case 3
  {
   bool casevalid=false;
   bool upd;
   {
    BaseMT2Font updarg(input,"font");
    bool suc=true;
    f=updarg(&upd,&suc);
    if(upd && !suc) goto fail; // Conversion failed or too many arguments
   }

   if(!upd)
   {
    // default font is Times-Roman, 12pt, black
    f.size=gmt_font::default_size;
    f.color.Convert(0);
    f.family=gmt_font::default_family;
   }

   // Size
   {
    BaseM2Width s(input,"s","size");
    if(s.Exist())
    {
     bool suc=true;
     f.size=s(&suc);
     if(!suc) goto fail; // Parsing error
     casevalid=true;
    }
   }

   // Family
   {
    BaseM2String family(input,"family","f");
    if(family.Exist())
    {
     bool suc=true;
     f.family=family(&suc);
     if(!suc) goto fail;  // Parsing error
     casevalid=true;
    }
   }

   // Color
   {
    BaseMT2Color color(input,"color","c");
    if(color.Exist())
    {
     bool suc=true;
     f.color=color(&suc);
     if(!suc) goto fail;  // Parsing error
     casevalid=true;
    }
   }

   if(casevalid || upd) return f; // Pen created or updated
  }

  // Case 6 and 7
  if(2==size || 3==size)
  {
   Base2Width s(input,0);
   Base2String fam(input,1);
   Base2Color c(input,2);
   bool suc=true;
   f.size=s(&suc);
   f.family=fam(&suc);
   f.color=c(&suc);
   if(!suc) goto fail; // Something wrong
   return f;
  }

  fail:
  *issuc=false;
  return f; // Something go wrong
 }
};

// Template for generating GMTObject from ObjectList
template<class Struct>
const ObjectBase* GMT_Type(const ObjectList* input)
{
 bool suc=true;
 Struct s=Convert2Struct<Struct,ObjectList>()(input,&suc);
 if(suc) return new ObjectGMTClass<Struct>(s);
 else return 0;
}

// Shift position of layer
const ObjectBase* GMT_LayerShift(const ObjectList* input);

// Draw frame with tics
const ObjectBase* GMT_DrawFrame(const ObjectList* input);

#endif