Dwoo\Plugins\Functions\PluginTif::compile()

Complexity

Conditions	16
Paths	113

Size

Total Lines	58
Code Lines	29

Duplication

Lines	0
Ratio	0 %

Importance

Changes

0

<?php
    public static function compile(Compiler $compiler, array $rest, array $tokens)
    {
        // load if plugin
        if (!class_exists(Core::NAMESPACE_PLUGINS_BLOCKS . 'PluginIf')) {
            try {
                $compiler->getDwoo()->getLoader()->loadPlugin('if');
            }
            catch (Exception $e) {
                throw new CompilationException($compiler, 'Tif: the if plugin is required to use Tif');
            }
        }

        if (count($rest) == 1) {
            return $rest[0];
        }

        // fetch false result and remove the ":" if it was present
        $falseResult = array_pop($rest);

        if (trim(end($rest), '"\'') === ':') {
            // remove the ':' if present
            array_pop($rest);
        } elseif (trim(end($rest), '"\'') === '?' || count($rest) === 1) {
            if ($falseResult === '?' || $falseResult === ':') {
                throw new CompilationException($compiler,
                    'Tif: incomplete tif statement, value missing after ' . $falseResult);
            }
            // there was in fact no false result provided, so we move it to be the true result instead
            $trueResult = $falseResult;
            $falseResult = "''";
        }

        // fetch true result if needed
        if (!isset($trueResult)) {
            $trueResult = array_pop($rest);
            // no true result provided so we use the expression arg
            if ($trueResult === '?') {
                $trueResult = true;
            }
        }

        // remove the '?' if present
        if (trim(end($rest), '"\'') === '?') {
            array_pop($rest);
        }

        // check params were correctly provided
        if (empty($rest) || $trueResult === null || $falseResult === null) {
            throw new CompilationException($compiler,
                'Tif: you must provide three parameters serving as <expression> ? <true value> : <false value>');
        }

        // parse condition
        $condition = PluginIf::replaceKeywords($rest, $tokens, $compiler);

        return '((' . implode(' ', $condition) . ') ? ' . ($trueResult === true ? implode(' ',
                $condition) : $trueResult) . ' : ' . $falseResult . ')';
    }
}