Merge branch '5.2' into 5.x

* 5.2:
  fixed parser
  Fixed bugs found by psalm
  [FrameworkBundle] Dont store cache misses on warmup
  fix test
  Update references to the ContainerConfigurator
  [Translation] Remove file added back from a bad merge
  Fix sleep value
  [Cache] skip storing failure-to-save as misses in ArrayAdapter
  [Validator] Delete obsolete statement in Regex::getHtmlPattern() phpDoc
  [FrameworkBundle] Remove author comments for configuration and extension
  [Stopwatch] Document new "name" property of StopwatchEvent
  [DependencyInjection] Fix "url" env var processor behavior when the url has no path
  Fixed support for nodes not extending BaseNode
  [FrameworkBundle] dont access the container to configure http_cache
  add missing queue_name to find(id) in doctrine messenger transport
  [Config][FrameworkBundle] Hint to use PHP 8+ or to install Annotations to use attributes/annots
  [Serializer] AbstractNormalizer force null for non-optional nullable constructor parameter denormalization when not present in input

Author: nicolas-grekas

Parser.php

@@ -172,7 +172,16 @@ private function doParse(string $value, int $flags)
                 }
 
                 // array
-                if (!isset($values['value']) || '' == trim($values['value'], ' ') || 0 === strpos(ltrim($values['value'], ' '), '#')) {
+                if (isset($values['value']) && 0 === strpos(ltrim($values['value'], ' '), '-')) {
+                    // Inline first child
+                    $currentLineNumber = $this->getRealCurrentLineNb();
+
+                    $sequenceIndentation = \strlen($values['leadspaces']) + 1;
+                    $sequenceYaml = substr($this->currentLine, $sequenceIndentation);
+                    $sequenceYaml .= "\n".$this->getNextEmbedBlock($sequenceIndentation, true);
+
+                    $data[] = $this->parseBlock($currentLineNumber, rtrim($sequenceYaml), $flags);
+                } elseif (!isset($values['value']) || '' == trim($values['value'], ' ') || 0 === strpos(ltrim($values['value'], ' '), '#')) {
                     $data[] = $this->parseBlock($this->getRealCurrentLineNb() + 1, $this->getNextEmbedBlock(null, true) ?? '', $flags);
                 } elseif (null !== $subTag = $this->getLineTag(ltrim($values['value'], ' '), $flags)) {
                     $data[] = new TaggedValue(
@@ -612,6 +621,7 @@ private function getNextEmbedBlock(int $indentation = null, bool $inSequence = f
         }
 
         $data = [];
+
         if ($this->getCurrentLineIndentation() >= $newIndent) {
             $data[] = substr($this->currentLine, $newIndent);
         } elseif ($this->isCurrentLineEmpty() || $this->isCurrentLineComment()) {

Tests/Fixtures/YtsBasicTests.yml

@@ -200,3 +200,37 @@ php: |
          'age' => 38
        ]
      ]
+---
+test: Inline first element in sequence blocks 1
+yaml: |
+  - - s1_i1
+    - s1_i2
+  - s2
+php: |
+  [
+    [
+      "s1_i1",
+      "s1_i2"
+    ],
+    "s2"
+  ]
+---
+test: Inline first element in sequence blocks 2
+yaml: |
+  - - s1_i1
+    - - s1_i1_1
+      - s1_i1_2
+    - s1_i2
+  - s2
+php: |
+  [
+    [
+      "s1_i1",
+      [
+        "s1_i1_1",
+        "s1_i1_2",
+      ],
+      "s1_i2"
+    ],
+    "s2"
+  ]