Initial commit

README.md

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+# Statusline Action Hints
+
+A Neovim plugin to show statusline information about the word under the cursor.
+
+Available statusline hints:
+* go-to-definition is available
+* reference list available
+* number of references
+
+## Installation
+
+### Lazy
+
+``` lua
+{
+    "roobert/statusline-action-hints.nvim",
+    config = function()
+        require("statusline-action-hints").setup()
+    end,
+}
+```
+
+### Packer
+
+``` lua
+use({
+    "roobert/statusline-action-hints.nvim",
+    config = function()
+        require("statusline-action-hints").setup()
+    end,
+})
+```
+
+## Usage
+
+As a lualine statusline component:
+
+``` lua
+require('lualine').setup {
+  sections = {
+      lualine_x = { require("statusline-action-hints").statusline }
+  }
+}
+```

lua/statusline-action-hints/init.lua

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+M = {}
+
+M.references_available = false
+M.reference_count = 0
+M.definition_available = false
+
+local function references()
+	local bufnr = vim.api.nvim_get_current_buf()
+	local cursor = vim.api.nvim_win_get_cursor(0)
+	local bufname = vim.api.nvim_buf_get_name(bufnr)
+
+	local params = {
+		textDocument = { uri = bufname },
+		position = { line = cursor[1] - 1, character = cursor[2] },
+		context = { includeDeclaration = true },
+	}
+
+	vim.lsp.buf_request(bufnr, "textDocument/references", params, function(err, result, _, _)
+		if err then
+			error(tostring(err))
+		end
+
+		if not result then
+			M.references_available = false
+			M.reference_count = 0
+			return false
+		end
+
+		if vim.tbl_count(result) > 0 then
+			M.references_available = true
+			M.reference_count = vim.tbl_count(result) - 1
+			return true
+		end
+
+		M.references_available = false
+		M.reference_count = 0
+		return false
+	end)
+end
+
+local function definition()
+	local bufnr = vim.api.nvim_get_current_buf()
+	local cursor = vim.api.nvim_win_get_cursor(0)
+	local bufname = vim.api.nvim_buf_get_name(bufnr)
+
+	local params = {
+		textDocument = { uri = bufname },
+		position = { line = cursor[1] - 1, character = cursor[2] },
+	}
+
+	vim.lsp.buf_request(bufnr, "textDocument/definition", params, function(err, result, _, _)
+		if err then
+			error(tostring(err))
+		end
+
+		if not result then
+			M.definition_available = false
+			return false
+		end
+
+		if vim.tbl_count(result) > 0 then
+			M.definition_available = true
+			return true
+		end
+
+		M.definition_available = false
+		return false
+	end)
+end
+
+M.statusline = function()
+	references()
+	definition()
+
+	local definition_status = ""
+
+	if M.definition_available then
+		definition_status = "gd"
+	end
+
+	return string.format("%s refs:%s", definition_status, M.reference_count)
+end
+
+M.setup = function() end
+
+return M