Improve configuration provider

package.json

@@ -438,6 +438,76 @@
         },
         "program": "./out/debugger/main.js",
         "runtime": "node",
+        "configurationSnippets": [
+          {
+            "label": "Ruby: Debug Local File",
+            "body": {
+              "name": "Debug Local File",
+              "type": "Ruby",
+              "request": "launch",
+              "program": "^\"\\${workspaceRoot}/main.rb\""
+            }
+          },
+          {
+            "label": "Ruby: Listen for rdebug-ide",
+            "body": {
+              "name": "Listen for rdebug-ide",
+              "type": "Ruby",
+              "request": "attach",
+              "remoteHost": "127.0.0.1",
+              "remotePort": "1234",
+              "remoteWorkspaceRoot": "^\"\\${workspaceRoot}\""
+            }
+          },
+          {
+            "label": "Ruby: Rails server",
+            "body": {
+              "name": "Rails server",
+              "type": "Ruby",
+              "request": "launch",
+              "program": "^\"\\${workspaceRoot}/bin/rails\"",
+              "args": [
+                "server"
+              ]
+            }
+          },
+          {
+            "label": "Ruby: RSpec - all",
+            "body": {
+              "name": "RSpec - all",
+              "type": "Ruby",
+              "request": "launch",
+              "program": "^\"\\${workspaceRoot}/bin/rspec\"",
+              "args": [
+                "-I",
+                "^\"\\${workspaceRoot}\""
+              ]
+            }
+          },
+          {
+            "label": "Ruby: RSpec - active spec file only",
+            "body": {
+              "name": "RSpec - active spec file only",
+              "type": "Ruby",
+              "request": "launch",
+              "program": "^\"\\${workspaceRoot}/bin/rspec\"",
+              "args": [
+                "-I",
+                "^\"\\${workspaceRoot}\"",
+                "^\"\\${file}\""
+              ]
+            }
+          },
+          {
+            "label": "Ruby: Cucumber",
+            "body": {
+              "name": "Cucumber",
+              "type": "Ruby",
+              "request": "launch",
+              "program": "^\"\\${workspaceRoot}/bin/cucumber\""
+            }
+          }
+        ],
         "configurationAttributes": {
           "launch": {
             "required": [
@@ -544,65 +614,7 @@
               }
             }
           }
-        },
-        "initialConfigurations": [
-          {
-            "name": "Debug Local File",
-            "type": "Ruby",
-            "request": "launch",
-            "cwd": "${workspaceRoot}",
-            "program": "${workspaceRoot}/main.rb"
-          },
-          {
-            "name": "Listen for rdebug-ide",
-            "type": "Ruby",
-            "request": "attach",
-            "cwd": "${workspaceRoot}",
-            "remoteHost": "127.0.0.1",
-            "remotePort": "1234",
-            "remoteWorkspaceRoot": "${workspaceRoot}"
-          },
-          {
-            "name": "Rails server",
-            "type": "Ruby",
-            "request": "launch",
-            "cwd": "${workspaceRoot}",
-            "program": "${workspaceRoot}/bin/rails",
-            "args": [
-              "server"
-            ]
-          },
-          {
-            "name": "RSpec - all",
-            "type": "Ruby",
-            "request": "launch",
-            "cwd": "${workspaceRoot}",
-            "program": "${workspaceRoot}/bin/rspec",
-            "args": [
-              "-I",
-              "${workspaceRoot}"
-            ]
-          },
-          {
-            "name": "RSpec - active spec file only",
-            "type": "Ruby",
-            "request": "launch",
-            "cwd": "${workspaceRoot}",
-            "program": "${workspaceRoot}/bin/rspec",
-            "args": [
-              "-I",
-              "${workspaceRoot}",
-              "${file}"
-            ]
-          },
-          {
-            "name": "Cucumber",
-            "type": "Ruby",
-            "request": "launch",
-            "cwd": "${workspaceRoot}",
-            "program": "${workspaceRoot}/bin/cucumber"
-          }
-        ]
+        }
       }
     ]
   }

src/providers/configuration.ts

@@ -0,0 +1,75 @@
+import * as vscode from 'vscode';
+
+export function registerConfigurationProvider(): void {
+	vscode.debug.registerDebugConfigurationProvider('Ruby', new RubyConfigurationProvider());
+}
+
+class RubyConfigurationProvider implements vscode.DebugConfigurationProvider {
+	public provideDebugConfigurations(
+		folder: vscode.WorkspaceFolder,
+		token: vscode.CancellationToken
+	): Thenable<vscode.DebugConfiguration[]> {
+		const names: string[] = rubyConfigurations.map(
+			(config: vscode.DebugConfiguration) => config.name
+		);
+
+		return vscode.window.showQuickPick(names).then((selected: string) => {
+			return [
+				rubyConfigurations.find((config: vscode.DebugConfiguration) => config.name === selected),
+			];
+		});
+	}
+
+	public resolveDebugConfiguration?(
+		folder: vscode.WorkspaceFolder | undefined,
+		debugConfiguration: vscode.DebugConfiguration
+	): vscode.ProviderResult<vscode.DebugConfiguration> {
+		const cwd: string = debugConfiguration.cwd || '${workspaceRoot}';
+
+		return { ...debugConfiguration, cwd };
+	}
+}
+
+const rubyConfigurations: vscode.DebugConfiguration[] = [
+	{
+		name: 'Debug Local File',
+		type: 'Ruby',
+		request: 'launch',
+		program: '${workspaceRoot}/main.rb',
+	},
+	{
+		name: 'Listen for rdebug-ide',
+		type: 'Ruby',
+		request: 'attach',
+		remoteHost: '127.0.0.1',
+		remotePort: '1234',
+		remoteWorkspaceRoot: '${workspaceRoot}',
+	},
+	{
+		name: 'Rails server',
+		type: 'Ruby',
+		request: 'launch',
+		program: '${workspaceRoot}/bin/rails',
+		args: ['server'],
+	},
+	{
+		name: 'RSpec - all',
+		type: 'Ruby',
+		request: 'launch',
+		program: '${workspaceRoot}/bin/rspec',
+		args: ['-I', '${workspaceRoot}'],
+	},
+	{
+		name: 'RSpec - active spec file only',
+		type: 'Ruby',
+		request: 'launch',
+		program: '${workspaceRoot}/bin/rspec',
+		args: ['-I', '${workspaceRoot}', '${file}'],
+	},
+	{
+		name: 'Cucumber',
+		type: 'Ruby',
+		request: 'launch',
+		program: '${workspaceRoot}/bin/cucumber',
+	},
+];

src/ruby.ts

@@ -6,6 +6,7 @@ import * as utils from './utils';
 
 import languageConfiguration from './languageConfiguration';
 import { registerCompletionProvider } from './providers/completion';
+import { registerConfigurationProvider } from './providers/configuration';
 import { registerFormatter } from './providers/formatter';
 import { registerHighlightProvider } from './providers/highlight';
 import { registerIntellisenseProvider } from './providers/intellisense';
@@ -34,6 +35,7 @@ export function activate(context: ExtensionContext): void {
 	// Register providers
 	registerCompletionProvider(context, DOCUMENT_SELECTOR);
 	registerFormatter(context, DOCUMENT_SELECTOR);
+	registerConfigurationProvider();
 
 	if (workspace.rootPath) {
 		registerLinters(context);