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<?php |
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namespace Jade\Compiler; |
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abstract class AttributesCompiler extends CompilerFacade |
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{ |
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protected function getAttributeDisplayCode($key, $value, $valueCheck) |
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{ |
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if ($key === 'style') { |
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$value = preg_replace('/::get(Escaped|Unescaped)Value/', '::get$1Style', $value, 1); |
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} |
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return is_null($valueCheck) |
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? ' ' . $key . '=' . $this->quote . $value . $this->quote |
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: $this->createCode('if (true === ($__value = %1$s)) { ', $valueCheck) |
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. $this->getBooleanAttributeDisplayCode($key) |
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. $this->createCode('} else if (\\Jade\\Compiler::isDisplayable($__value)) { ') |
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. ' ' . $key . '=' . $this->quote . $value . $this->quote |
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. $this->createCode('}'); |
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} |
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protected function getBooleanAttributeDisplayCode($key) |
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{ |
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return ' ' . $key . ($this->terse |
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? '' |
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: '=' . $this->quote . $key . $this->quote |
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); |
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} |
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protected function getValueStatement($statements) |
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{ |
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return is_string($statements[0]) |
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? $statements[0] |
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: $statements[0][0]; |
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} |
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protected function getAndAttributeCode($attr, &$classes, &$classesCheck) |
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{ |
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$addClasses = '""'; |
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if (count($classes) || count($classesCheck)) { |
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foreach ($classes as &$value) { |
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$value = var_export($value, true); |
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} |
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foreach ($classesCheck as $value) { |
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$statements = $this->createStatements($value); |
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$classes[] = $statements[0][0]; |
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} |
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$addClasses = '" " . implode(" ", array(' . implode(', ', $classes) . '))'; |
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$classes = array(); |
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$classesCheck = array(); |
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} |
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$value = empty($attr['value']) ? 'attributes' : $attr['value']; |
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$statements = $this->createStatements($value); |
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return $this->createCode( |
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'$__attributes = ' . $this->getValueStatement($statements) . ';' . |
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'if (is_array($__attributes)) { ' . |
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'$__attributes["class"] = trim(' . |
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'$__classes = (empty($__classes) ? "" : $__classes . " ") . ' . |
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'(isset($__attributes["class"]) ? (is_array($__attributes["class"]) ? implode(" ", $__attributes["class"]) : $__attributes["class"]) : "") . ' . |
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$addClasses . |
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'); ' . |
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'if (empty($__attributes["class"])) { ' . |
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'unset($__attributes["class"]); ' . |
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'} ' . |
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'} ' . |
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'\\Jade\\Compiler::displayAttributes($__attributes, ' . var_export($this->quote, true) . ', ' . var_export($this->terse, true) . ');'); |
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} |
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protected function getClassAttribute($value, &$classesCheck) |
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{ |
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$statements = $this->createStatements($value); |
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$value = is_array($statements[0]) ? $statements[0][0] : $statements[0]; |
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$classesCheck[] = '(is_array($_a = ' . $value . ') ? implode(" ", $_a) : $_a)'; |
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return $this->keepNullAttributes ? '' : 'null'; |
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} |
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protected function getValueCode($escaped, $value, &$valueCheck) |
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{ |
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if ($this->keepNullAttributes) { |
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return $this->escapeIfNeeded($escaped, $value); |
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} |
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$valueCheck = $value; |
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return $this->escapeIfNeeded($escaped, '$__value'); |
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} |
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protected function getAttributeValue($escaped, $key, $value, &$classesCheck, &$valueCheck) |
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{ |
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if ($this->isConstant($value)) { |
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$value = trim($value, ' \'"'); |
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return $value === 'undefined' ? 'null' : $value; |
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} |
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$json = static::parseValue($value); |
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if ($key === 'class') { |
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return $json !== null && is_array($json) |
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? implode(' ', $json) |
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: $this->getClassAttribute($value, $classesCheck); |
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} |
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return $this->getValueCode($escaped, $value, $valueCheck); |
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} |
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protected function escapeValueIfNeeded($value, $escaped, $valueCheck) |
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{ |
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return is_null($valueCheck) && $escaped && !$this->keepNullAttributes |
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? $this->escapeValue($value) |
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: $value; |
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} |
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protected function compileAttributeValue($key, $value, $attr, $valueCheck) |
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{ |
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return $value === true || $attr['value'] === true |
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? $this->getBooleanAttributeDisplayCode($key) |
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: ($value !== false && $attr['value'] !== false && $value !== 'null' && $value !== 'undefined' |
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? $this->getAttributeDisplayCode( |
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$key, |
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$this->escapeValueIfNeeded($value, $attr['escaped'], $valueCheck), |
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$valueCheck |
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) |
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: '' |
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); |
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} |
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protected function getAttributeCode($attr, &$classes, &$classesCheck) |
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{ |
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$key = trim($attr['name']); |
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if ($key === '&attributes') { |
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return $this->getAndAttributeCode($attr, $classes, $classesCheck); |
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} |
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$valueCheck = null; |
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$value = trim($attr['value']); |
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$value = $this->getAttributeValue($attr['escaped'], $key, $value, $classesCheck, $valueCheck); |
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if ($key === 'class') { |
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if ($value !== 'false' && $value !== 'null' && $value !== 'undefined') { |
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array_push($classes, $value); |
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} |
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return ''; |
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} |
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return $this->compileAttributeValue($key, $value, $attr, $valueCheck); |
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} |
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protected function getClassesCode(&$classes, &$classesCheck) |
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{ |
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return trim($this->createCode( |
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'$__classes = implode(" ", ' . |
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'array_unique(explode(" ", (empty($__classes) ? "" : $__classes) . ' . |
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var_export(implode(' ', $classes), true) . ' . ' . |
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'implode(" ", array(' . implode(', ', $classesCheck) . ')) ' . |
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')) ' . |
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');' |
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)); |
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} |
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protected function getClassesDisplayCode() |
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{ |
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return trim($this->createCode( |
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'if (!empty($__classes)) { ' . |
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'?> ' . (isset($this->options['classAttribute']) |
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? $this->options['classAttribute'] |
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: 'class' |
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) . '=' . $this->quote . '<?php echo $__classes; ?>' . $this->quote . '<?php ' . |
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'} ' . |
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'unset($__classes); ' |
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)); |
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} |
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/** |
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* @param array $attributes |
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*/ |
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protected function compileAttributes($attributes) |
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{ |
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$items = ''; |
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$classes = array(); |
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$classesCheck = array(); |
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foreach ($attributes as $attr) { |
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$items .= $this->getAttributeCode($attr, $classes, $classesCheck); |
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} |
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$items .= $this->getClassesCode($classes, $classesCheck); |
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$this->buffer($items, false); |
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} |
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} |
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In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: