Added check to test if list is empty (#5)

Signed-off-by: Lasse Gaardsholt <[email protected]>

Author: Gaardsholt

.github/workflows/release-drafter.yml

@@ -5,13 +5,6 @@ on:
     # branches to consider in the event; optional, defaults to all
     branches:
       - main
-  # pull_request event is required only for autolabeler
-  pull_request:
-    # Only following types are handled by the action, but one can default to all as well
-    types: [opened, reopened, synchronize]
-  # pull_request_target event is required for autolabeler to support PRs from forks
-  # pull_request_target:
-  #   types: [opened, reopened, synchronize]
 
 permissions:
   # write permission is required to create a github release

README.md

@@ -1,21 +1,16 @@
-# TFLint Ruleset Template
-[![Build Status](https://github.com/terraform-linters/tflint-ruleset-template/workflows/build/badge.svg?branch=main)](https://github.com/terraform-linters/tflint-ruleset-template/actions)
-
-This is a template repository for building a custom ruleset. You can create a plugin repository from "Use this template". See also [Writing Plugins](https://github.com/terraform-linters/tflint/blob/master/docs/developer-guide/plugins.md).
+# TFLint Ruleset trailing-comma
 
 ## Requirements
 
 - TFLint v0.42+
-- Go v1.22
+- Go v1.22 or newer
 
 ## Installation
 
-TODO: This template repository does not contain release binaries, so this installation will not work. Please rewrite for your repository. See the "Building the plugin" section to get this template ruleset working.
-
 You can install the plugin with `tflint --init`. Declare a config in `.tflint.hcl` as follows:
 
 ```hcl
-plugin "template" {
+plugin "trailing-comma" {
   enabled = true
 
   version = "0.1.0"

rules/terraform_lists_trailing_comma.go

@@ -48,9 +48,10 @@ func (r *TerraformListsTrailingCommaRule) Check(runner tflint.Runner) error {
 		file := files[filename]
 
 		list, ok := e.(*hclsyntax.TupleConsExpr)
-		if !ok {
+		if !ok || len(list.Exprs) <= 0 {
 			return nil
 		}
+
 		listRange := list.Range()
 		lastItem := list.Exprs[len(list.Exprs)-1]
 		lastItemRange := lastItem.Range()