#ifndef SYMBOL_TABLE_H_INCLUDED
#define SYMBOL_TABLE_H_INCLUDED

#include <stddef.h>

#define SYMBOL_TABLE_SIZE 100

enum Type {
    TYPE_CONST,
    TYPE_INT
};

typedef struct SymbolItem {
    enum Type type;
    char *name;
    int address;
    int init;
} SymbolItem;

/**
 * Stores temp variables at the end of the table
 */
typedef struct SymbolTable {
    struct SymbolItem table[SYMBOL_TABLE_SIZE];
    int index;
    int temp_index;
} SymbolTable;

/**
 * Initializes the table's index to 0
 *
 * @param table
 */
void init_table(SymbolTable *table);

/**
 * Initializes the symbol
 *
 * @param table
 */
void init_symbol_item(SymbolItem *symbol_item, size_t name_size);

/**
 * Checks if the given symbol is in the table
 *
 * @param table
 * @param name
 * @return
 */
int has_symbol(SymbolTable* table, char *name);

/**
 * Adds the given symbol to the table.
 *
 * @param table
 * @param type
 * @param name
 * @return 0 on success, -1 if the symbol already exists, -2 if the table is full
 */
int add_symbol(SymbolTable* table, enum Type type, char *name);

/**
 * Adds the given symbol to temporary variables space
 * Temporary variables must start with _
 *
 * @param table
 * @param type
 * @param name
 * @return 0 on success, -1 if the table is full
 */
const SymbolItem* add_temp_symbol(SymbolTable* table, enum Type type);

/**
 * Marks the given symbol as initialized
 *
 * @param table
 * @param name
 * @return 0 on success, -1 if the symbol was not found, -2 if the symbol was already initialized
 */
int mark_symbol_initialized(SymbolTable* table, char *name);

/**
 * Prints the whole table to the console
 *
 * @param table
 */
void print_table(SymbolTable* table);

/**
 * Prints the given item to the console
 *
 * @param item
 */
void print_item(struct SymbolItem *item);

/**
 * Converts a Type to a string
 *
 * @param type
 * @return
 */
char* type_to_string(enum Type type);

/**
 * Gets the table line for the given symbol name
 *
 * @param table
 * @param name
 * @return the item if found, NULL otherwise
 */
SymbolItem *get_symbol_item(SymbolTable* table, const char *name);

#endif /* !SYMBOL_TABLE_H_INCLUDED  */