initial commit

.Rbuildignore

@@ -19,3 +19,4 @@
 ^CRAN-RELEASE$
 ^appveyor\.yml$
 ^tools$
+^LICENSE\.md$

DESCRIPTION

@@ -1,6 +1,6 @@
 Package: swiftr
 Type: Package
-Title: swiftr title goes here otherwise CRAN checks fail
+Title: Seamless R and Swift Integration
 Version: 0.1.0
 Date: 2021-01-24
 Authors@R: c(
@@ -8,17 +8,17 @@ Authors@R: c(
            comment = c(ORCID = "0000-0001-5670-2640"))
   )
 Maintainer: Bob Rudis <bob@rud.is>
-Description: A good description goes here otherwise CRAN checks fail.
+Description: eamless R and Swift Integration
 URL: https://git.rud.is/hrbrmstr/swiftr
 BugReports: https://git.rud.is/hrbrmstr/swiftr/issues
 Encoding: UTF-8
-License: AGPL
+License: MIT + file LICENSE
 Suggests: 
     covr, tinytest
 Depends: 
-    R (>= 3.5.0)
+    R (>= 3.6.0)
 Imports: 
-    httr,
-    jsonlite
+    rprojroot,
+    stringi
 Roxygen: list(markdown = TRUE)
 RoxygenNote: 7.1.1

LICENSE

@@ -0,0 +1,2 @@
+YEAR: 2021
+COPYRIGHT HOLDER: Bob Rudis

LICENSE.md

@@ -0,0 +1,21 @@
+# MIT License
+
+Copyright (c) 2021 Bob Rudis
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

NAMESPACE

@@ -1,4 +1,4 @@
 # Generated by roxygen2: do not edit by hand
 
-import(httr)
-importFrom(jsonlite,fromJSON)
+export(add_registration_glue)
+import(rprojroot)

R/add-reg-glue.R

@@ -0,0 +1,117 @@
+auto_gen_note <- "// Generated by swiftr: do not edit by hand"
+
+preamble <- '#include <R.h>
+#include <Rinternals.h>
+#include <stdlib.h>
+#include <R_ext/Rdynload.h>
+'
+
+extern_template <- "extern SEXP %s(%s);"
+
+method_template <- '  {"%s", (DL_FUNC) &%s, %s},'
+
+postamble_template <- '
+static const R_CallMethodDef CallEntries[] = {
+%s
+  {NULL, NULL, 0}
+};
+
+void R_init_daybreak(DllInfo *dll) {
+  R_registerRoutines(dll, NULL, CallEntries, NULL, NULL);
+  R_useDynamicSymbols(dll, FALSE);
+}
+'
+
+populate_template <- function(src_dir, swift_src, glue_src) {
+
+  wd <- getwd()
+  on.exit(setwd(wd))
+
+  setwd(src_dir)
+
+  gsub(
+    "^import ", "",
+    grep("^import", readLines(file.path(src_dir, swift_src), warn=FALSE), value=TRUE)
+  ) -> imports
+
+  if (length(imports) >= 1) {
+    imports <- sprintf("-framework %s", imports)
+  }
+
+  system2(
+    command = Sys.which("swiftc"),
+    args = c(
+      "-I /Library/Frameworks/R.framework/Headers",
+      "-F/Library/Frameworks",
+      "-framework R",
+      imports,
+      "-print-ast",
+      sprintf("-import-objc-header %s", glue_src),
+      swift_src
+    ),
+    stdout = TRUE,
+    stderr = TRUE
+  ) -> ast
+
+  func_lines <- which(grepl("@_cdec", ast))
+
+  funcs <- gsub('@_cdecl\\("|"\\)', "", ast[func_lines])
+  sexp_cts <- stringi::stri_count_fixed(ast[func_lines+1], "SEXP")-1
+
+  paste0(
+    mapply(function(func, sexp_ct) {
+      sprintf(extern_template, func, paste0(rep("SEXP", sexp_ct), collapse = ", "))
+    }, funcs, sexp_cts, SIMPLIFY = TRUE, USE.NAMES = FALSE),
+    collapse = "\n"
+  ) -> externs
+
+  paste0(
+    mapply(function(func, sexp_ct) {
+      sprintf(method_template, func, func, sexp_ct)
+    }, funcs, sexp_cts, SIMPLIFY = TRUE, USE.NAMES = FALSE),
+    collapse = "\n"
+  ) -> methods
+
+  paste(
+    auto_gen_note,
+    preamble,
+    externs,
+    sprintf(postamble_template, methods),
+    sep = "\n"
+  )
+
+}
+
+init_file_auto_generated <- function(src_dir) {
+
+  init_file <- file.path(src_dir, "init.c")
+
+  if (file.exists(init_file)) {
+    grepl(sprintf("^%s", auto_gen_note), readLines(init_file)[1])
+  } else {
+    TRUE
+  }
+
+}
+
+#' @export
+add_registration_glue <- function(package = ".") {
+
+  makevars <- rprojroot::find_package_root_file("src/Makevars")
+
+  src_dir <- dirname(makevars)
+
+  if (init_file_auto_generated(src_dir)) {
+
+    swift_src <- list.files(src_dir, pattern = "swift$")
+    glue_src <- list.files(src_dir, pattern = "h$")
+
+    tmpl <- populate_template(src_dir, swift_src, glue_src)
+
+    writeLines(tmpl, file.path(src_dir, "init.c"))
+
+  } else {
+    stop("init.c was not auto-generated. Aborting.")
+  }
+
+}

R/swiftr-package.R

@@ -1,9 +1,8 @@
-#' ...
+#' Seamless R and Swift Integration
 #'
 #' @md
 #' @name swiftr
 #' @keywords internal
 #' @author Bob Rudis (bob@@rud.is)
-#' @import httr
-#' @importFrom jsonlite fromJSON
+#' @import rprojroot stringi
 "_PACKAGE"

man/swiftr.Rd

@@ -4,9 +4,9 @@
 \name{swiftr}
 \alias{swiftr}
 \alias{swiftr-package}
-\title{...}
+\title{Seamless R and Swift Integration}
 \description{
-A good description goes here otherwise CRAN checks fail.
+eamless R and Swift Integration
 }
 \seealso{
 Useful links: