From b52d462cb7bea5e81174ece43eb349357add2f11 Mon Sep 17 00:00:00 2001
From: Mads Hougesen <mads@mhouge.dk>
Date: Mon, 13 May 2024 19:23:40 +0200
Subject: feat: add support for yew-fmt (#398)

* feat: add support for yew-fmt

Should close #314 :)

* refactor: copy rustfmt to yew-fmt

* fix: use correct default_edition

* refactor: extract Cargo.toml parsing into utility function

* refactor: yew-fmt doesn't rely directly on rustfmt definition

---------

Co-authored-by: Steven Arcangeli <stevearc@stevearc.com>
---
 lua/conform/formatters/rustfmt.lua | 22 ++--------------------
 lua/conform/formatters/yew-fmt.lua | 21 +++++++++++++++++++++
 2 files changed, 23 insertions(+), 20 deletions(-)
 create mode 100644 lua/conform/formatters/yew-fmt.lua

(limited to 'lua/conform/formatters')

diff --git a/lua/conform/formatters/rustfmt.lua b/lua/conform/formatters/rustfmt.lua
index 62d2d78..e33fb86 100644
--- a/lua/conform/formatters/rustfmt.lua
+++ b/lua/conform/formatters/rustfmt.lua
@@ -1,15 +1,4 @@
----@param manifest string
----@return nil|string
-local function parse_edition(manifest)
-  for line in io.lines(manifest) do
-    if line:match("^edition *=") then
-      local edition = line:match("%d+")
-      if edition then
-        return edition
-      end
-    end
-  end
-end
+local util = require("conform.util")
 
 ---@type conform.FileFormatterConfig
 return {
@@ -24,14 +13,7 @@ return {
   },
   args = function(self, ctx)
     local args = { "--emit=stdout" }
-    local edition
-    local manifest = vim.fs.find("Cargo.toml", { upward = true, path = ctx.dirname })[1]
-    if manifest then
-      edition = parse_edition(manifest)
-    end
-    if not edition then
-      edition = self.options.default_edition
-    end
+    local edition = util.parse_rust_edition(ctx.dirname) or self.options.default_edition
     table.insert(args, "--edition=" .. edition)
 
     return args
diff --git a/lua/conform/formatters/yew-fmt.lua b/lua/conform/formatters/yew-fmt.lua
new file mode 100644
index 0000000..f441fdf
--- /dev/null
+++ b/lua/conform/formatters/yew-fmt.lua
@@ -0,0 +1,21 @@
+local util = require("conform.util")
+
+---@type conform.FileFormatterConfig
+return {
+  meta = {
+    url = "https://github.com/schvv31n/yew-fmt",
+    description = "Code formatter for the Yew framework.",
+  },
+  command = "yew-fmt",
+  options = {
+    -- The default edition of Rust to use when no Cargo.toml file is found
+    default_edition = "2021",
+  },
+  args = function(self, ctx)
+    local args = { "--emit=stdout" }
+    local edition = util.parse_rust_edition(ctx.dirname) or self.options.default_edition
+    table.insert(args, "--edition=" .. edition)
+
+    return args
+  end,
+}
-- 
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