#include "precompile.h"

#include "memutil.h"

#include "sp_rsn.h"

void sp_rsn_context_init_original(sp_uid_t rsn, int original_type, sp_rsn_context_t *ctx)
{
	ctx->depth = 0;
	ctx->original_type = original_type;
	ctx->previous_rsn = SP_RSN_UNKNOWN;
	ctx->current_rsn = rsn;
}
void sp_rsn_context_init_downstream(sp_uid_t rsn, const sp_rsn_context_t *upstream, sp_rsn_context_t *ctx)
{
	ctx->depth = upstream->depth + 1;
	ctx->original_type = upstream->original_type;
	ctx->previous_rsn = upstream->current_rsn;
	ctx->current_rsn = rsn;
}

sp_rsn_context_t *sp_rsn_context_create_original(sp_uid_t rsn, int original_type)
{
	sp_rsn_context_t *ctx = MALLOC_T(sp_rsn_context_t);
	if (ctx) {
		sp_rsn_context_init_original(rsn, original_type, ctx);
	}
	return ctx;
}

sp_rsn_context_t *sp_rsn_context_create_downstream(sp_uid_t rsn, const sp_rsn_context_t *upstream)
{
	sp_rsn_context_t *ctx = MALLOC_T(sp_rsn_context_t);
	if (ctx) {
		sp_rsn_context_init_downstream(rsn, upstream, ctx);
	}
	return ctx;
}

void sp_rsn_context_destroy(sp_rsn_context_t *ctx)
{
	free(ctx);
}

void sp_rsn_context_copy(sp_rsn_context_t *dst_ctx, const sp_rsn_context_t *src_ctx)
{
	dst_ctx->previous_rsn = src_ctx->previous_rsn;
	dst_ctx->current_rsn = src_ctx->current_rsn;
	dst_ctx->original_type = src_ctx->original_type;
	dst_ctx->depth = src_ctx->depth;
}

sp_rsn_context_t *sp_rsn_context_clone(const sp_rsn_context_t *src_ctx)
{
	sp_rsn_context_t *dst_ctx = MALLOC_T(sp_rsn_context_t);
	if (dst_ctx) {
		sp_rsn_context_copy(dst_ctx, src_ctx);
	}
	return dst_ctx;
}