PhpCsFixer\Fixer\FunctionNotation\NoSpacesAfterFunctionNameFixer::fix PHP Method

    public function fix(\SplFileInfo $file, Tokens $tokens)
    {
        $functionyTokens = $this->getFunctionyTokenKinds();
        $languageConstructionTokens = $this->getLanguageConstructionTokenKinds();
        foreach ($tokens as $index => $token) {
            // looking for start brace
            if (!$token->equals('(')) {
                continue;
            }
            // last non-whitespace token
            $lastTokenIndex = $tokens->getPrevNonWhitespace($index);
            if (null === $lastTokenIndex) {
                continue;
            }
            // check for ternary operator
            $endParenthesisIndex = $tokens->findBlockEnd(Tokens::BLOCK_TYPE_PARENTHESIS_BRACE, $index);
            $nextNonWhiteSpace = $tokens->getNextMeaningfulToken($endParenthesisIndex);
            if (null !== $nextNonWhiteSpace && $tokens[$nextNonWhiteSpace]->equals('?') && $tokens[$lastTokenIndex]->isGivenKind($languageConstructionTokens)) {
                continue;
            }
            // check if it is a function call
            if ($tokens[$lastTokenIndex]->isGivenKind($functionyTokens)) {
                $this->fixFunctionCall($tokens, $index);
            } elseif ($tokens[$lastTokenIndex]->isGivenKind(T_STRING)) {
                // for real function calls or definitions
                $possibleDefinitionIndex = $tokens->getPrevMeaningfulToken($lastTokenIndex);
                if (!$tokens[$possibleDefinitionIndex]->isGivenKind(T_FUNCTION)) {
                    $this->fixFunctionCall($tokens, $index);
                }
            }
        }
    }