#ifndef DEPTREE_H
#define DEPTREE_H
#include <set>
#include <vector>
#include <string>
#include <pthread.h>
#include <time.h>
#include "globals.h"

class DepTree
{
 typedef std::vector<DepTree*> LeafVector;
 typedef std::map<std::string,DepTree*> DepTreeVars;
 typedef std::set<DepTree*> NodeVector;
 typedef std::set<const DepTree*> CallStack;
 enum NodeType {NOTDEF,ROOT,SAVE,PRINT,VAR};

 typedef struct
 {
  const DepTree* root;
  int exitcode;
  LeafVector leafs;
  pthread_mutex_t leaf_mtx;
  pthread_mutex_t root_mtx;
  pthread_mutex_t vars_mtx;
  pthread_mutex_t prsv_mtx;
  pthread_mutex_t tree_mtx;
 } thread_params;
 NodeVector parents;
 NodeVector childrens;
 NodeType type;
 std::string name;
 ExecExpr exe;

 int CreateNodeFromVar(const std::string& v, VarType& vars, DepTreeVars& dvars, CallStack& callstack);
 int CreateNodeFromSP(NodeType list, VarType& vars, ExecExpr& exp, DepTreeVars& dvars);
 LeafVector FindLeafNodes() const;
public:
 DepTree():type(DepTree::NOTDEF) {}
 DepTree(const DepTree&) = delete;
 ~DepTree()
 {
  for(auto& i:parents) i->childrens.erase(this);
  for(auto& i:childrens)
  {
   i->parents.erase(this);
   if(i->parents.size()==0) delete i;
  }
 }

 int CreateTree(ExecType& save, ExecType& print, VarType& vars);
 int EvaluateTree(unsigned int nthreads);
 void DumpTree() const;
 int CheckFunctions() const;
 friend void* TreeEvaluateM(void* arg);
 friend void* TreeEvaluate (void* arg);
};

#endif