add function signatures to box-attached functions

DESCRIPTION

@@ -1,6 +1,6 @@
 Package: box.lsp
 Title: What the Package Does (One Line, Title Case)
-Version: 0.0.0.9003
+Version: 0.0.0.9004
 Authors@R: 
   c(
     person("Ricardo Rodrigo", "Basa", role = c("aut", "cre"), email = "[email protected]"),

R/box_lsp.R

@@ -61,11 +61,20 @@ box_use_parser <- function(expr, action) {
       # nolint start
       # action$assign(symbol = names(x) %>% purrr::keep(~. != ""), value = NULL)
       # nolint end
-
       # for box::use(dplyr[a, b, c])
       lapply(as.character(x)[-c(1, 2)], function(y) {
         if (y != "...") {
-          action$assign(symbol = as.character(y), value = NULL)
+          namespaced_function <- paste0(as.character(x[[2]]), "::", as.character(y))
+
+          tmp_name <- "temp_func"
+          signature <- deparse(eval(parse(text = namespaced_function, keep.source = TRUE)))[[1]]
+          empty <- "{ }"
+          tmp_sig <- paste(tmp_name, "<-", signature, empty)
+          func_sig <- parse(text = tmp_sig, keep.source = TRUE)[[1]]
+
+
+          action$assign(symbol = as.character(y), value = func_sig[[3L]])
+          action$parse(func_sig[[3L]])
         }
       })
 

README.md

@@ -40,12 +40,15 @@ action <- list(
   },
   update = function(packages) {
     cat(paste("Packages: ", packages, "\n"))
+  },
+  parse = function(expr) {
+    cat(paste("Parse: ", expr, "\n"))
   }
 )
 
 content <- c("box::use(stringr, dplyr[alias = filter, mutate], xml2[...])", "filt", "stringr$str_c")
 expr <- parse(text = content, keep.source = TRUE)
-box_use_parser(expr, action)
+box_use_parser(expr[[1]], action)
 ```
 
 ### Dev work on completion