#include <inttypes.h>
#include "init.h"
#include "object.h"
#include "globals.h"
#include "builtin.h"
#include "parser.h"
// We can't include lexical.h before grammatical.h, because of strange errors, but grammatical.h only needs definition of yyscan_t
#ifndef YY_TYPEDEF_YY_SCANNER_T
#define YY_TYPEDEF_YY_SCANNER_T
typedef void* yyscan_t;
#endif
#include "grammatical.h"
// definitions for bison-bridge
#define YYSTYPE CONFSTYPE
#define YYLTYPE CONFLTYPE
#include "lexical.h"
#undef YYSTYPE
#undef YYLTYPE

int ParseConfigFile(const char* config, ExecType& tosave, ExecType& toprint, VarType& vars)
{
 yyscan_t scanner;
 struct lexical_extra extra;
 FILE* conffd;
 int ret;

 conffd=fopen(config,"r");
 if(nullptr==conffd)
 {
  COUT(ERROR)<<"Can't open file "<<config<<std::endl;
  return 1;
 }

 extra.maxinclevel=10;
 extra.retcode=0;
 extra.state.inclevel=0;
 extra.state.curline=1;
 extra.state.curpos=extra.state.curoffset=0;
 char* cwd=get_current_dir_name();
 extra.state.curdir=cwd;
 free(cwd);
 extra.toprint=&toprint;
 extra.tosave=&tosave;
 extra.vars=&vars;
 extra.ParsePath(config);
 // Search paths begin from working directory
 extra.includedirs=extra.moduledirs="./";

 conflex_init_extra(&extra,&scanner);
 confset_in(conffd,scanner);
// {YYSTYPE qqq; while(conflex(&qqq,scanner)>0);}
 ret=confparse(scanner);
 conflex_destroy(scanner);
 fclose(conffd);
 return ret+extra.retcode;
}


int ParseOptions(int argc, char** argv, struct program_options& options)
{
 int opt=0;
 const char* optstr="t:hdgiq";

 optind=1;
 do
 {
  opt=getopt(argc,argv,optstr);
  switch(opt)
  {
   case(-1): break;
   case('t'):{options.threads=atoi(optarg); if(options.threads<1) return 1; else break;}
   case('h'):{options.help=true; break;}
   case('d'):{options.dump=true; break;}
   case('g'):{options.dl=DEBUG; break;}
   case('i'):{options.dl=INFO; break;}
   case('q'):{options.dl=WARNING; break;}
   default: return 1;
  }
 } while(-1!=opt);
 if(optind!=argc-1) return 1;
 options.config=argv[optind];
 return 0;
}


int RegisterBuiltinFunctions()
{
 RegisterFunction("ADD",Arifm2<OpAdd>);
 RegisterFunction("SUB",Arifm2<OpSub>);
 RegisterFunction("MUL",Arifm2<OpMul>);
 RegisterFunction("DIV",Arifm2<OpDiv>);
 RegisterFunction("POW",Arifm2<OpPow,false>);
 RegisterFunction("NEG",Arifm1<OpNeg>);
 RegisterFunction("POS",Arifm1<OpPos>);

 RegisterFunction("GET",Get<ObjectList>);
 RegisterFunction("GET",Get<ObjectPair>);
 return 0;
}


debug_level SetDebugLevel(debug_level dl)
{
 static debug_level DEBUG_LEVEL=INFO;
 if(dl==INTERNALREQUEST) return DEBUG_LEVEL;
 debug_level s=DEBUG_LEVEL;
 DEBUG_LEVEL=dl;
 return s;
}


std::ostream& COUT(debug_level dl)
{
 if(dl==ERROR) return std::cerr;
 if(dl>=SetDebugLevel(INTERNALREQUEST)) std::cout.clear();
 else std::cout.setstate(std::cout.failbit);
 return std::cout;
}