#include "pipe.h"

#ifndef STATIC_ONLY
#include <malloc.h>
#endif

zv_pipe_t * zv_pipe_create() {
#ifdef STATIC_ONLY
    return (zv_pipe_t *) NULL;
#else
    zv_pipe_t *self = (zv_pipe_t *) malloc(sizeof(zv_pipe_t));

    if (self == NULL) {
        return self;
    }

    zv_pipe_init(self);
    return self;
#endif
}

void zv_pipe_init(zv_pipe_t *self) {
    self->content = (zv_pipe_t *) NULL;
    self->changed = false;
}

void zv_pipe_delete(zv_pipe_t *self) {
#ifndef STATIC_ONLY
    if (self != NULL) {
        free(self);
    }
#endif
}

bool zv_pipe_is_changed(zv_pipe_t *self) {
    return self->changed;
}

intptr_t zv_pipe_read_number(zv_pipe_t *self) {
    self->changed = false;
    return (intptr_t) self->content;
}

void * zv_pipe_read_content(zv_pipe_t *self) {
    self->changed = false;
    return self->content;
}

void zv_pipe_write_number(zv_pipe_t *self, intptr_t content) {
    self->changed = true;
    self->content = (void *) content;
}

void zv_pipe_write_content(zv_pipe_t *self, void *content) {
    self->changed = true;
    self->content = content;
}