Make lint output look like a compiler

Summary:
Make lint output look like gcc errors / grep output; a format used by
editors to jump from a compiler error to a file+line of code which
triggered the error.

Test Plan:
In vim, I ran:

  :set makeprg=~/checkouts/devtools/arcanist/bin/arc\ lint\ --output\ compiler

Then:

  :make

And was able to jump directly to problematic lines of code.

Reviewers: jungejason

Reviewed By: jungejason

CC: aran, edwardspeyer, jungejason, codeblock, tuomaspelkonen, epriestley

Differential Revision: https://secure.phabricator.com/D550

src/lint/renderer/ArcanistLintLikeCompilerRenderer.php

@@ -0,0 +1,52 @@
+<?php
+
+/*
+ * Copyright 2012 Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Shows lint messages to the user.
+ *
+ * @group lint
+ */
+final class ArcanistLintLikeCompilerRenderer {
+  public function renderLintResult(ArcanistLintResult $result) {
+    $lines = array();
+    $messages = $result->getMessages();
+    $path = $result->getPath();
+
+    foreach ($messages as $message) {
+      $severity = ArcanistLintSeverity::getStringForSeverity(
+        $message->getSeverity());
+      $line = $message->getLine();
+      $code = $message->getCode();
+      $description = $message->getDescription();
+      $lines[] = sprintf(
+        "%s:%d:%s (%s) %s\n",
+        $path,
+        $line,
+        $severity,
+        $code,
+        $description
+      );
+    }
+
+    return implode('', $lines);
+  }
+
+  public function renderOkayResult() {
+    return "";
+  }
+}

src/lint/renderer/__init__.php

@@ -12,6 +12,7 @@ phutil_require_module('phutil', 'console');
 phutil_require_module('phutil', 'utils');
 
 
+phutil_require_source('ArcanistLintJSONRenderer.php');
+phutil_require_source('ArcanistLintLikeCompilerRenderer.php');
 phutil_require_source('ArcanistLintRenderer.php');
 phutil_require_source('ArcanistLintSummaryRenderer.php');
-phutil_require_source('ArcanistLintJSONRenderer.php');

src/workflow/lint/ArcanistLintWorkflow.php

@@ -74,7 +74,8 @@ EOTEXT
         'param' => 'format',
         'help' =>
           "With 'summary', show lint warnings in a more compact format. ".
-          "With 'json', show lint warnings in machine-readable JSON format."
+          "With 'json', show lint warnings in machine-readable JSON format. ".
+          "With 'compiler', show lint warnings in suitable for your editor."
       ),
       'advice' => array(
         'help' =>
@@ -196,6 +197,11 @@ EOTEXT
       case 'summary':
         $renderer = new ArcanistLintSummaryRenderer();
         break;
+      case 'compiler':
+        $renderer = new ArcanistLintLikeCompilerRenderer();
+        $prompt_patches = false;
+        $apply_patches = $this->getArgument('apply-patches');
+        break;
       default:
         $renderer = new ArcanistLintRenderer();
         break;