#include <debug.h>

#include <avl/avl.h>

#include <defines/W.h>
#include <defines/X.h>
#include <defines/Y.h>
#include <defines/Z.h>

#include <string/new.h>
#include <string/free.h>

#include "variable/new.h"
#include "variable/compare.h"
#include "variable/free.h"

#include "struct.h"
#include "new.h"

struct scope* new_scope()
{
    ENTER;
    
    struct scope* this = smalloc(sizeof(*this));
    
    this->tree = avl_alloc_tree(
        /* comparator: */ compare_variables,
        /* free-er: */ free_variable);
    
    // add W:
    {
        struct string* w = new_string("w");
        
        void* ptr = avl_insert(this->tree, new_variable(w, W));
        
        assert(ptr);
        
        free_string(w);
    }
    
    // add X:
    {
        struct string* x = new_string("x");
        
        void* ptr = avl_insert(this->tree, new_variable(x, X));
        
        assert(ptr);
        
        free_string(x);
    }
    
    // add Y:
    {
        struct string* y = new_string("y");
        
        void* ptr = avl_insert(this->tree, new_variable(y, Y));
        
        assert(ptr);
        
        free_string(y);
    }
    
    // add Z:
    {
        struct string* z = new_string("z");
        
        void* ptr = avl_insert(this->tree, new_variable(z, Z));
        
        assert(ptr);
        
        free_string(z);
    }
    
    EXIT;
    return this;
}