Merge branch '4.4' into 5.1

* 4.4:
  Enable "native_constant_invocation" CS rule
  Make AbstractPhpFileCacheWarmer public

Author: nicolas-grekas

Compiler.php

@@ -109,14 +109,14 @@ public function string(string $value)
     public function repr($value)
     {
         if (\is_int($value) || \is_float($value)) {
-            if (false !== $locale = setlocale(LC_NUMERIC, 0)) {
-                setlocale(LC_NUMERIC, 'C');
+            if (false !== $locale = setlocale(\LC_NUMERIC, 0)) {
+                setlocale(\LC_NUMERIC, 'C');
             }
 
             $this->raw($value);
 
             if (false !== $locale) {
-                setlocale(LC_NUMERIC, $locale);
+                setlocale(\LC_NUMERIC, $locale);
             }
         } elseif (null === $value) {
             $this->raw('null');

Lexer.php

@@ -43,7 +43,7 @@ public function tokenize(string $expression)
             if (preg_match('/[0-9]+(?:\.[0-9]+)?([Ee][\+\-][0-9]+)?/A', $expression, $match, 0, $cursor)) {
                 // numbers
                 $number = (float) $match[0];  // floats
-                if (preg_match('/^[0-9]+$/', $match[0]) && $number <= PHP_INT_MAX) {
+                if (preg_match('/^[0-9]+$/', $match[0]) && $number <= \PHP_INT_MAX) {
                     $number = (int) $match[0]; // integers lower than the maximum
                 }
                 $tokens[] = new Token(Token::NUMBER_TYPE, $number, $cursor + 1);

SyntaxError.php

@@ -22,7 +22,7 @@ public function __construct(string $message, int $cursor = 0, string $expression
         $message .= '.';
 
         if (null !== $subject && null !== $proposals) {
-            $minScore = INF;
+            $minScore = \INF;
             foreach ($proposals as $proposal) {
                 $distance = levenshtein($subject, $proposal);
                 if ($distance < $minScore) {

Tests/ExpressionLanguageTest.php

@@ -66,7 +66,7 @@ public function testCachedParse()
     public function testConstantFunction()
     {
         $expressionLanguage = new ExpressionLanguage();
-        $this->assertEquals(PHP_VERSION, $expressionLanguage->evaluate('constant("PHP_VERSION")'));
+        $this->assertEquals(\PHP_VERSION, $expressionLanguage->evaluate('constant("PHP_VERSION")'));
 
         $expressionLanguage = new ExpressionLanguage();
         $this->assertEquals('\constant("PHP_VERSION")', $expressionLanguage->compile('constant("PHP_VERSION")'));