Merge pull request #1216 from olivroy/cli-links

Improve stack trace styler throws on parse error

Author: IndrajeetPatil

R/io.R

@@ -54,7 +54,11 @@ transform_utf8_one <- function(path, fun, dry) {
       if (inherits(e, "dryError")) {
         rlang::abort(conditionMessage(e))
       }
-      warn(paste0("When processing ", path, ": ", conditionMessage(e)))
+      show_path <- cli::style_hyperlink(
+        cli::col_blue(basename(path)),
+        paste0("file://", path)
+      )
+      cli::cli_warn("When processing {show_path}:", parent = e)
       NA
     }
   )

R/parse.R

@@ -15,25 +15,26 @@
 #'
 #' styler:::parse_safely("a + 3 -4 -> \n glück + 1")
 parse_safely <- function(text, ...) {
-  tried_parsing <- rlang::try_fetch(
+  tried_parsing <- withCallingHandlers(
     parse(text = text, ...),
-    error = function(e) e,
-    warning = function(w) w
-  )
-  if (inherits(tried_parsing, "error")) {
-    if (has_crlf_as_first_line_sep(tried_parsing$message, text)) {
-      abort(paste0(
-        "The code to style seems to use Windows style line endings (CRLF). ",
-        "styler currently only supports Unix style line endings (LF). ",
-        "Please change the EOL character in your editor to Unix style and try ",
-        "again.\nThe parsing error was:\n", tried_parsing$message
-      ))
-    } else {
-      abort(tried_parsing$message)
+    error = function(e) {
+      if (has_crlf_as_first_line_sep(e$message, text)) {
+        msg <- c(
+          x = "The code to style seems to use Windows style line endings (CRLF).",
+          `!` = "styler currently only supports Unix style line endings (LF). ",
+          i = "Please change the EOL character in your editor to Unix style
+                 and try again."
+        )
+      } else {
+        msg <- c(x = "Styling failed")
+      }
+      cli::cli_abort(msg, parent = e, call = NULL)
+    },
+    warning = function(w) {
+      cli::cli_warn(w$message)
+      w
     }
-  } else if (inherits(tried_parsing, "warning")) {
-    warn(tried_parsing$message)
-  }
+  )
   tried_parsing
 }
 

R/testing.R

@@ -117,7 +117,7 @@ transform_and_check <- function(in_item, out_item,
     unclass()
   if (!file.exists(out_item)) {
     warn(paste(
-      "File", out_item, "does not exist. Creating it from transormation."
+      "File", out_item, "does not exist. Creating it from transformation."
     ))
     file.create(out_item)
   }