Sheet::processingInstructions()   A
last analyzed

Complexity

Conditions 2
Paths 2

Size

Total Lines 11

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
c 0
b 0
f 0
dl 0
loc 11
rs 9.9
cc 2
nc 2
nop 2
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<?php
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/* @description     Transformation Style Sheets - Revolutionising PHP templating    *
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 * @author          Tom Butler [email protected]                                             *
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 * @copyright       2017 Tom Butler <[email protected]> | https://r.je/                      *
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 * @license         http://www.opensource.org/licenses/bsd-license.php  BSD License *
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 * @version         1.2                                                             */
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namespace Transphporm\Parser;
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/** Parses a .tss file into individual rules, each rule has a query e,g, `ul li` and a set of rules e.g. `display: none; bind: iteration(id);` */
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class Sheet {
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	private $tss;
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	private $xPath;
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	private $valueParser;
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	private $filePath;
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	private $sheetLoader;
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	private $file;
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	private $rules;
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	public function __construct($tss, CssToXpath $xPath, Value $valueParser, \Transphporm\FilePath $filePath, \Transphporm\SheetLoader\SheetLoader $sheetLoader, $file = null) {
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		$this->xPath = $xPath;
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		$this->valueParser = $valueParser;
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		$this->filePath = $filePath;
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		$this->sheetLoader = $sheetLoader;
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		$this->file = $file;
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		$this->tss = (new Tokenizer($tss))->getTokens();
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	}
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	public function parse($indexStart = 0) {
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		if (!empty($this->rules)) return $this->rules['rules'];
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		$rules = $this->parseTokens($indexStart);
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		$this->checkError($rules);
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		return $rules;
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	}
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	private function parseTokens($indexStart) {
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		$this->rules = [];
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		foreach (new TokenFilterIterator($this->tss, [Tokenizer::WHITESPACE]) as $token) {
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			if ($processing = $this->processingInstructions($token, count($this->rules)+$indexStart)) {
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				$this->rules = array_merge($this->rules, $processing);
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			}
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			else if (!in_array($token['type'], [Tokenizer::NEW_LINE, Tokenizer::AT_SIGN])) $this->addRules($token, $indexStart++);
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		}
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		return $this->rules;
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	}
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	private function addRules($token, $indexStart) {
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		$selector = $this->tss->from($token['type'], true)->to(Tokenizer::OPEN_BRACE);
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		$this->tss->skip(count($selector));
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		if (count($selector) === 0) return;
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		$newRules = $this->cssToRules($selector, count($this->rules)+$indexStart, $this->getProperties($this->tss->current()['value']), $token['line']);
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		$this->rules = $this->writeRule($this->rules, $newRules);
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	}
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	private function checkError($rules) {
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		if (empty($rules) && count($this->tss) > 0) throw new \Exception('No TSS rules parsed');
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	}
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	private function CssToRules($selector, $index, $properties, $line) {
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		$parts = $selector->trim()->splitOnToken(Tokenizer::ARG);
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		$rules = [];
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		foreach ($parts as $part) {
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			$serialized = serialize($part->removeLine());
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			$rules[$serialized] = new \Transphporm\Rule($this->xPath->getXpath($part), $this->xPath->getPseudo($part), $this->xPath->getDepth($part), $index, $this->file, $line);
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			$rules[$serialized]->properties = $properties;
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		}
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		return $rules;
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	}
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	private function writeRule($rules, $newRules) {
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		foreach ($newRules as $selector => $newRule) {
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			if (isset($rules[$selector])) {
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				$newRule->properties = array_merge($rules[$selector]->properties, $newRule->properties);
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				$newRule->index = $rules[$selector]->index;
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			}
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			$rules[$selector] = $newRule;
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		}
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		return $rules;
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	}
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	private function processingInstructions($token, $indexStart) {
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		if ($token['type'] !== Tokenizer::AT_SIGN) return false;
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		$tokens = $this->tss->from(Tokenizer::AT_SIGN, false)->to(Tokenizer::SEMI_COLON, false);
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		$funcName = $tokens->from(Tokenizer::NAME, true)->read();
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		$funcToks = $tokens->from(Tokenizer::NAME);
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		$args = $this->valueParser->parseTokens($funcToks);
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		$rules = $this->$funcName($args, $indexStart, $funcToks);
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		$this->tss->skip(count($tokens)+2);
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		return $rules;
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	}
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	private function import($args, $indexStart, $tokens) {
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Unused Code introduced by
The parameter $tokens is not used and could be removed.

This check looks from parameters that have been defined for a function or method, but which are not used in the method body.

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		$fileName = $this->filePath->getFilePath($args[0]);
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		$this->sheetLoader->addImport($fileName);
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		$tssFile = new \Transphporm\SheetLoader\TSSString(file_get_contents($fileName), $this->filePath);
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		return $tssFile->getRules($this->xPath, $this->valueParser, $this->sheetLoader, $indexStart);
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	}
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	private function cacheKey($args, $indexStart, $tokens) {
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The parameter $args is not used and could be removed.

This check looks from parameters that have been defined for a function or method, but which are not used in the method body.

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Unused Code introduced by
The parameter $indexStart is not used and could be removed.

This check looks from parameters that have been defined for a function or method, but which are not used in the method body.

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		$this->sheetLoader->setCacheKey($tokens);
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	}
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	private function getProperties($tokens) {
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        $rules = $tokens->splitOnToken(Tokenizer::SEMI_COLON);
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        $return = [];
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        foreach ($rules as $rule) {
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            $name = $rule->from(Tokenizer::NAME, true)->to(Tokenizer::COLON)->read();
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            $tokens = $rule->from(Tokenizer::COLON)->trim();
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            if (count($tokens) > 0) $return[$name] = $rule->from(Tokenizer::COLON)->trim();
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        }
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        return $return;
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    }
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}
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