#include <stbool.h>
#include <stdio.h>
#include <stdlib.h>
#include "aocutils.h"

struct TextGrid {
    unsigned rows, cols;
    char *data; // may have '\n' at end of rows
};

bool TGvalid(struct TextGrid *tg, unsigned row, unsigned col) {
    if (row >= tg->rows) return false;
    if (col >= tg->cols) return false;
    return true;
}
char *TGcharptr(struct TextGrid *tg, unsigned row, unsigned col) {
    if (row >= tg->rows) return NULL;
    if (col >= tg->cols) return NULL;
    return data + (row * tg->cols) + col;
}

// TODO: rewrite this shit
size_t linearize2d(unsigned width, unsigned row, unsigned col) {
    return (row * width) + col;
}