feature #23294 [Yaml][Lint] Add line numbers to JSON output. (WybrenKoelmans)

This PR was merged into the 4.0-dev branch.

Discussion
----------

[Yaml][Lint] Add line numbers to JSON output.

| Q             | A
| ------------- | ---
| Branch?       | 2.7?
| Bug fix?      | no?
| New feature?  | yes?
| BC breaks?    | no?
| Deprecations? | no?
| Tests pass?   | Hopefully
| Fixed tickets | n/a
| License       | MIT
| Doc PR        | TODO?

- [ ] Run tests?
- [ ] Check if it will break BC?
- [ ] Update changelog?

The JSON output is not very useful for me without the line number. I don't want to have to parse it from the message.

Is this the right way of doing it?

With PR:
```
[
    {
        "file": "",
        "line": 13,
        "valid": false,
        "message": "Unable to parse at line 13 (near \"sdf \")."
    }
]
```

Before:
```
[
    {
        "file": "",
        "valid": false,
        "message": "Unable to parse at line 13 (near \"sdf \")."
    }
]
```

Commits
-------

c6d19b1976 [Yaml][Twig][Lint] Added line numbers to JSON output.

src/Symfony/Bridge/Twig/Command/LintCommand.php

@@ -145,7 +145,7 @@ EOF
         } catch (Error $e) {
             $twig->setLoader($realLoader);
 
-            return array('template' => $template, 'file' => $file, 'valid' => false, 'exception' => $e);
+            return array('template' => $template, 'file' => $file, 'line' => $e->getTemplateLine(), 'valid' => false, 'exception' => $e);
         }
 
         return array('template' => $template, 'file' => $file, 'valid' => true);

src/Symfony/Component/Yaml/Command/LintCommand.php

@@ -105,7 +105,7 @@ EOF
     {
         $prevErrorHandler = set_error_handler(function ($level, $message, $file, $line) use (&$prevErrorHandler) {
             if (E_USER_DEPRECATED === $level) {
-                throw new ParseException($message);
+                throw new ParseException($message, $this->getParser()->getLastLineNumberBeforeDeprecation());
             }
 
             return $prevErrorHandler ? $prevErrorHandler($level, $message, $file, $line) : false;
@@ -114,7 +114,7 @@ EOF
         try {
             $this->getParser()->parse($content, Yaml::PARSE_CONSTANT);
         } catch (ParseException $e) {
-            return array('file' => $file, 'valid' => false, 'message' => $e->getMessage());
+            return array('file' => $file, 'line' => $e->getParsedLine(), 'valid' => false, 'message' => $e->getMessage());
         } finally {
             restore_error_handler();
         }

src/Symfony/Component/Yaml/Parser.php

@@ -75,6 +75,16 @@ class Parser
         return $data;
     }
 
+    /**
+     * @internal
+     *
+     * @return int
+     */
+    public function getLastLineNumberBeforeDeprecation()
+    {
+        return $this->getRealCurrentLineNb();
+    }
+
     private function doParse($value, $flags)
     {
         $this->currentLineNb = -1;