Kint\CallFinder::getFunctionCalls()

Complexity

Conditions	77
Paths	24

Size

Total Lines	364
Code Lines	211

Duplication

Lines	0
Ratio	0 %

Importance

Changes

0

<?php
    public static function getFunctionCalls(string $source, int $line, $function): array
    {
        static $up = [
            '(' => true,
            '[' => true,
            '{' => true,
            T_CURLY_OPEN => true,
            T_DOLLAR_OPEN_CURLY_BRACES => true,
        ];
        static $down = [
            ')' => true,
            ']' => true,
            '}' => true,
        ];
        static $modifiers = [
            '!' => true,
            '@' => true,
            '~' => true,
            '+' => true,
            '-' => true,
        ];
        static $identifier = [
            T_DOUBLE_COLON => true,
            T_STRING => true,
            T_NS_SEPARATOR => true,
        ];

        if (KINT_PHP80) {
            $up[T_ATTRIBUTE] = true;
            self::$operator[T_MATCH] = true;
            self::$strip[T_NULLSAFE_OBJECT_OPERATOR] = true;
            self::$classcalls[T_NULLSAFE_OBJECT_OPERATOR] = true;
            self::$namespace[T_NAME_FULLY_QUALIFIED] = true;
            self::$namespace[T_NAME_QUALIFIED] = true;
            self::$namespace[T_NAME_RELATIVE] = true;
            $identifier[T_NAME_FULLY_QUALIFIED] = true;
            $identifier[T_NAME_QUALIFIED] = true;
            $identifier[T_NAME_RELATIVE] = true;
        }

        if (!KINT_PHP84) {
            self::$operator[T_NEW] = true; // @codeCoverageIgnore
        }

        /** @psalm-var list<PhpToken> */
        $tokens = \token_get_all($source);
        $function_calls = [];

        // Performance optimization preventing backwards loops
        /** @psalm-var array<PhpToken|null> */
        $prev_tokens = [null, null, null];

        if (\is_array($function)) {
            $class = \explode('\\', $function[0]);
            $class = \strtolower(\end($class));
            $function = \strtolower($function[1]);
        } else {
            $class = null;
            /**
             * @psalm-suppress RedundantFunctionCallGivenDocblockType
             * Psalm bug #11075
             */
            $function = \strtolower($function);
        }

        // Loop through tokens
        foreach ($tokens as $index => $token) {
            if (!\is_array($token)) {
                continue;
            }

            if ($token[2] > $line) {
                break;
            }

            // Store the last real tokens for later
            if (isset(self::$ignore[$token[0]])) {
                continue;
            }

            $prev_tokens = [$prev_tokens[1], $prev_tokens[2], $token];

            // The logic for 7.3 through 8.1 is far more complicated.
            // This should speed things up without making a lot more work for us
            if (KINT_PHP82 && $line !== $token[2]) {
                continue;
            }

            // Check if it's the right type to be the function we're looking for
            if (!isset(self::$namespace[$token[0]])) {
                continue;
            }

            $ns = \explode('\\', \strtolower($token[1]));

            if (\end($ns) !== $function) {
                continue;
            }

            // Check if it's a function call
            $nextReal = self::realTokenIndex($tokens, $index);
            if ('(' !== ($tokens[$nextReal] ?? null)) {
                continue;
            }

            // Check if it matches the signature
            if (null === $class) {
                if (null !== $prev_tokens[1] && isset(self::$classcalls[$prev_tokens[1][0]])) {
                    continue;
                }
            } else {
                if (null === $prev_tokens[1] || T_DOUBLE_COLON !== $prev_tokens[1][0]) {
                    continue;
                }

                if (null === $prev_tokens[0] || !isset(self::$namespace[$prev_tokens[0][0]])) {
                    continue;
                }

                // All self::$namespace tokens are T_ constants
                /**
                 * @psalm-var PhpTokenArray $prev_tokens[0]
                 * Psalm bug #746 (wontfix)
                 */
                $ns = \explode('\\', \strtolower($prev_tokens[0][1]));

                if (\end($ns) !== $class) {
                    continue;
                }
            }

            $last_line = $token[2];
            $depth = 1; // The depth respective to the function call
            $offset = $nextReal + 1; // The start of the function call
            $instring = false; // Whether we're in a string or not
            $realtokens = false; // Whether the current scope contains anything meaningful or not
            $paramrealtokens = false; // Whether the current parameter contains anything meaningful
            $params = []; // All our collected parameters
            $shortparam = []; // The short version of the parameter
            $param_start = $offset; // The distance to the start of the parameter

            // Loop through the following tokens until the function call ends
            while (isset($tokens[$offset])) {
                $token = $tokens[$offset];

                if (\is_array($token)) {
                    $last_line = $token[2];
                }

                if (!isset(self::$ignore[$token[0]]) && !isset($down[$token[0]])) {
                    $paramrealtokens = $realtokens = true;
                }

                // If it's a token that makes us to up a level, increase the depth
                if (isset($up[$token[0]])) {
                    if (1 === $depth) {
                        $shortparam[] = $token;
                        $realtokens = false;
                    }

                    ++$depth;
                } elseif (isset($down[$token[0]])) {
                    --$depth;

                    // If this brings us down to the parameter level, and we've had
                    // real tokens since going up, fill the $shortparam with an ellipsis
                    if (1 === $depth) {
                        if ($realtokens) {
                            $shortparam[] = '...';
                        }
                        $shortparam[] = $token;
                    }
                } elseif ('"' === $token || 'b"' === $token) {
                    // Strings use the same symbol for up and down, but we can
                    // only ever be inside one string, so just use a bool for that
                    if ($instring) {
                        --$depth;
                        if (1 === $depth) {
                            $shortparam[] = '...';
                        }
                    } else {
                        ++$depth;
                    }

                    $instring = !$instring;

$instring is of type mixed, thus it always evaluated to false.

                    $shortparam[] = $token;
                } elseif (1 === $depth) {
                    if (',' === $token[0]) {
                        $params[] = [
                            'full' => \array_slice($tokens, $param_start, $offset - $param_start),
                            'short' => $shortparam,
                        ];
                        $shortparam = [];
                        $paramrealtokens = false;
                        $param_start = $offset + 1;
                    } elseif (T_CONSTANT_ENCAPSED_STRING === $token[0]) {
                        $quote = $token[1][0];
                        if ('b' === $quote) {
                            $quote = $token[1][1];
                            if (\strlen($token[1]) > 3) {
                                $token[1] = 'b'.$quote.'...'.$quote;
                            }
                        } else {
                            if (\strlen($token[1]) > 2) {
                                $token[1] = $quote.'...'.$quote;
                            }
                        }
                        $shortparam[] = $token;
                    } else {
                        $shortparam[] = $token;
                    }
                }

                // Depth has dropped to 0 (So we've hit the closing paren)
                if ($depth <= 0) {
                    if ($paramrealtokens) {
                        $params[] = [
                            'full' => \array_slice($tokens, $param_start, $offset - $param_start),
                            'short' => $shortparam,
                        ];
                    }

                    break;
                }

                ++$offset;
            }

            // If we're not passed (or at) the line at the end
            // of the function call, we're too early so skip it
            // Only applies to < 8.2 since we check line explicitly above that
            if (!KINT_PHP82 && $last_line < $line) {
                continue; // @codeCoverageIgnore
            }

            $formatted_parameters = [];

            // Format the final output parameters
            foreach ($params as $param) {
                $name = self::tokensFormatted($param['short']);
                $path = self::tokensToString(self::tokensTrim($param['full']));
                $expression = false;
                $literal = false;
                $new_without_parens = false;

                foreach ($name as $token) {

$token is overwriting a variable from outer foreach loop.

                    if (self::tokenIsOperator($token)) {
                        $expression = true;
                        break;
                    }
                }

                // As of 8.4 new is only an expression when parentheses are
                // omitted. In that case we can cheat and add them ourselves.
                //
                // > PHP interprets the first expression after new as a class name
                // per https://wiki.php.net/rfc/new_without_parentheses
                if (KINT_PHP84 && !$expression && T_NEW === $name[0][0]) {
                    $had_name_token = false;
                    $new_without_parens = true;

                    foreach ($name as $token) {
                        if (T_NEW === $token[0]) {
                            continue;
                        }

                        if (isset(self::$ignore[$token[0]])) {
                            continue;
                        }

                        if (T_CLASS === $token[0]) {
                            $new_without_parens = false;
                            break;
                        }

                        if ('(' === $token && $had_name_token) {
                            $new_without_parens = false;
                            break;
                        }

                        $had_name_token = true;
                    }
                }

                if (!$expression && 1 === \count($name)) {
                    switch ($name[0][0]) {
                        case T_CONSTANT_ENCAPSED_STRING:
                        case T_LNUMBER:
                        case T_DNUMBER:
                            $literal = true;
                            break;
                        case T_STRING:
                            switch (\strtolower($name[0][1])) {
                                case 'null':
                                case 'true':
                                case 'false':
                                    $literal = true;
                            }
                    }

                    $name = self::tokensToString($name);
                } else {
                    $name = self::tokensToString($name);

                    if (!$expression) {
                        switch (\strtolower($name)) {
                            case 'array()':
                            case '[]':
                                $literal = true;
                                break;
                        }
                    }
                }

                $formatted_parameters[] = [
                    'name' => $name,
                    'path' => $path,
                    'expression' => $expression,
                    'literal' => $literal,
                    'new_without_parens' => $new_without_parens,
                ];
            }

            // Skip first-class callables
            if (KINT_PHP81 && 1 === \count($formatted_parameters) && '...' === \reset($formatted_parameters)['path']) {
                continue;
            }

            // Get the modifiers
            --$index;

            while (isset($tokens[$index])) {
                if (!isset(self::$ignore[$tokens[$index][0]]) && !isset($identifier[$tokens[$index][0]])) {
                    break;
                }

                --$index;
            }

            $mods = [];

            while (isset($tokens[$index])) {
                if (isset(self::$ignore[$tokens[$index][0]])) {
                    --$index;
                    continue;
                }

                if (isset($modifiers[$tokens[$index][0]])) {
                    $mods[] = $tokens[$index];
                    --$index;
                    continue;
                }

                break;
            }

            $function_calls[] = [
                'parameters' => $formatted_parameters,
                'modifiers' => $mods,
            ];
        }

        return $function_calls;
    }