Add later dependency

Author: jcheng5

DESCRIPTION

@@ -30,6 +30,10 @@ SystemRequirements: 'libnng' >= 1.5 and 'libmbedtls' >= 2.5, or 'cmake' to
     compile NNG and/or Mbed TLS included in package sources
 Depends: 
     R (>= 3.5)
+Imports:
+    later
+LinkingTo: 
+    later
 Suggests: 
     knitr,
     markdown

NAMESPACE

@@ -96,6 +96,7 @@ export(until_)
 export(wait)
 export(wait_)
 export(write_cert)
+importFrom(later,later)
 importFrom(stats,start)
 importFrom(tools,md5sum)
 importFrom(utils,.DollarNames)

R/nanonext-package.R

@@ -95,6 +95,7 @@
 #' @importFrom stats start
 #' @importFrom tools md5sum
 #' @importFrom utils .DollarNames
+#' @importFrom later later
 #' @useDynLib nanonext, .registration = TRUE
 #'
 "_PACKAGE"

src/later_shim.cpp

@@ -0,0 +1,5 @@
+#include <later_api.h>
+
+extern "C" void later2(void (*func)(void*), void* data, double secs) {
+  later::later(func, data, secs);
+}

src/later_shim.h

@@ -0,0 +1,7 @@
+#ifndef LATER_SHIM_H
+#define LATER_SHIM_H
+
+// This is simply a shim so that later::later can be accessed from C, not C++
+void later2(void (*func)(void*), void* data, double secs);
+
+#endif