[7.0] Remove remaining deprecated code paths

Author: nicolas-grekas

CHANGELOG.md

@@ -1,6 +1,11 @@
 CHANGELOG
 =========
 
+7.0
+---
+
+ * Remove the `!php/const:` tag, use `!php/const` instead (without the colon)
+
 6.3
 ---
 

Parser.php

@@ -198,14 +198,9 @@ private function doParse(string $value, int $flags): mixed
                     array_pop($this->refsBeingParsed);
                 }
             } elseif (
-                // @todo in 7.0 remove legacy "(?:!?!php/const:)?"
-                self::preg_match('#^(?P<key>(?:![^\s]++\s++)?(?:'.Inline::REGEX_QUOTED_STRING.'|(?:!?!php/const:)?[^ \'"\[\{!].*?)) *\:(( |\t)++(?P<value>.+))?$#u', rtrim($this->currentLine), $values)
+                self::preg_match('#^(?P<key>(?:![^\s]++\s++)?(?:'.Inline::REGEX_QUOTED_STRING.'|[^ \'"\[\{!].*?)) *\:(( |\t)++(?P<value>.+))?$#u', rtrim($this->currentLine), $values)
                 && (!str_contains($values['key'], ' #') || \in_array($values['key'][0], ['"', "'"]))
             ) {
-                if (str_starts_with($values['key'], '!php/const:')) {
-                    trigger_deprecation('symfony/yaml', '6.2', 'YAML syntax for key "%s" is deprecated and replaced by "!php/const %s".', $values['key'], substr($values['key'], 11));
-                }
-
                 if ($context && 'sequence' == $context) {
                     throw new ParseException('You cannot define a mapping item when in a sequence.', $this->currentLineNb + 1, $this->currentLine, $this->filename);
                 }
@@ -413,7 +408,7 @@ private function doParse(string $value, int $flags): mixed
                     throw new ParseException('Multiple documents are not supported.', $this->currentLineNb + 1, $this->currentLine, $this->filename);
                 }
 
-                if ($deprecatedUsage = (isset($this->currentLine[1]) && '?' === $this->currentLine[0] && ' ' === $this->currentLine[1])) {
+                if (isset($this->currentLine[1]) && '?' === $this->currentLine[0] && ' ' === $this->currentLine[1]) {
                     throw new ParseException('Complex mappings are not supported.', $this->getRealCurrentLineNb() + 1, $this->currentLine);
                 }
 
@@ -443,7 +438,7 @@ private function doParse(string $value, int $flags): mixed
                             continue;
                         }
                         // If the indentation is not consistent at offset 0, it is to be considered as a ParseError
-                        if (0 === $this->offset && !$deprecatedUsage && isset($line[0]) && ' ' === $line[0]) {
+                        if (0 === $this->offset && isset($line[0]) && ' ' === $line[0]) {
                             throw new ParseException('Unable to parse.', $this->getRealCurrentLineNb() + 1, $this->currentLine, $this->filename);
                         }
 

Tests/InlineTest.php

@@ -824,7 +824,7 @@ public function testTheEmptyStringIsAValidMappingKey()
     /**
      * @dataProvider getNotPhpCompatibleMappingKeyData
      */
-    public function testImplicitStringCastingOfMappingKeysIsDeprecated($yaml, $expected)
+    public function testImplicitStringCastingOfMappingKeysThrows($yaml, $expected)
     {
         $this->expectException(ParseException::class);
         $this->expectExceptionMessage('Implicit casting of incompatible mapping keys to strings is not supported. Quote your evaluable mapping keys instead');

Tests/ParserTest.php

@@ -12,16 +12,13 @@
 namespace Symfony\Component\Yaml\Tests;
 
 use PHPUnit\Framework\TestCase;
-use Symfony\Bridge\PhpUnit\ExpectDeprecationTrait;
 use Symfony\Component\Yaml\Exception\ParseException;
 use Symfony\Component\Yaml\Parser;
 use Symfony\Component\Yaml\Tag\TaggedValue;
 use Symfony\Component\Yaml\Yaml;
 
 class ParserTest extends TestCase
 {
-    use ExpectDeprecationTrait;
-
     private ?Parser $parser;
 
     protected function setUp(): void
@@ -662,7 +659,7 @@ public function testObjectsSupportDisabledWithExceptions()
         $this->parser->parse($yaml, Yaml::PARSE_EXCEPTION_ON_INVALID_TYPE);
     }
 
-    public function testMappingKeyInMultiLineStringTriggersDeprecationNotice()
+    public function testMappingKeyInMultiLineStringThrowsException()
     {
         $this->expectException(ParseException::class);
         $this->expectExceptionMessage('Mapping values are not allowed in multi-line blocks at line 2 (near "dbal:wrong").');
@@ -2483,25 +2480,14 @@ public function testPhpConstantTagMappingKey()
         $this->assertSame($expected, $this->parser->parse($yaml, Yaml::PARSE_CONSTANT));
     }
 
-    public function testDeprecatedPhpConstantSyntax()
+    public function testWrongPhpConstantSyntax()
     {
         $this->expectException(ParseException::class);
         $this->expectExceptionMessage('Missing value for tag "php/const:App\Kernel::SEMART_VERSION" at line 1 (near "!php/const:App\Kernel::SEMART_VERSION").');
 
         $this->parser->parse('!php/const:App\Kernel::SEMART_VERSION', Yaml::PARSE_CUSTOM_TAGS | Yaml::PARSE_CONSTANT);
     }
 
-    /**
-     * @group legacy
-     */
-    public function testDeprecatedPhpConstantSyntaxAsScalarKey()
-    {
-        $this->expectDeprecation('Since symfony/yaml 6.2: YAML syntax for key "!php/const:Symfony\Component\Yaml\Tests\B::BAR" is deprecated and replaced by "!php/const Symfony\Component\Yaml\Tests\B::BAR".');
-        $actual = $this->parser->parse('!php/const:Symfony\Component\Yaml\Tests\B::BAR: value', Yaml::PARSE_CUSTOM_TAGS | Yaml::PARSE_CONSTANT);
-
-        $this->assertSame(['bar' => 'value'], $actual);
-    }
-
     public function testPhpConstantTagMappingAsScalarKey()
     {
         $yaml = <<<YAML