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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\Framework\Filter\Template\Tokenizer;
/**
* Template constructions variables tokenizer
*/
class Variable extends \Magento\Framework\Filter\Template\Tokenizer\AbstractTokenizer
{
/**
* Internal counter used to keep track of how deep in array parsing we are
*
* @var int
*/
protected $arrayDepth = 0;
/**
* Tokenize string and return getted variable stack path
*
* @return array
* @SuppressWarnings(PHPMD.CyclomaticComplexity)
*/
public function tokenize()
{
$actions = [];
$parameterName = '';
$variableSet = false;
do {
if ($this->isWhiteSpace()) {
// Ignore white spaces
continue;
} elseif ($this->char() != '.' && $this->char() != '(') {
// Property or method name
$parameterName .= $this->char();
} elseif ($this->char() == '(') {
// Method declaration
$methodArgs = $this->getMethodArgs();
$actions[] = ['type' => 'method', 'name' => $parameterName, 'args' => $methodArgs];
$parameterName = '';
} elseif ($parameterName != '') {
// Property or variable declaration
if ($variableSet) {
$actions[] = ['type' => 'property', 'name' => $parameterName];
} else {
$variableSet = true;
$actions[] = ['type' => 'variable', 'name' => $parameterName];
}
$parameterName = '';
}
} while ($this->next());
if ($parameterName != '') {
if ($variableSet) {
$actions[] = ['type' => 'property', 'name' => $parameterName];
} else {
$actions[] = ['type' => 'variable', 'name' => $parameterName];
}
}
return $actions;
}
/**
* Get string value for method args
*
* @return string
*/
public function getString()
{
$value = '';
if ($this->isWhiteSpace()) {
return $value;
}
$quoteStart = $this->isQuote();
if ($quoteStart) {
$breakSymbol = $this->char();
} else {
$breakSymbol = false;
$value .= $this->char();
}
while ($this->next()) {
if (!$breakSymbol && $this->isStringBreak()) {
$this->prev();
break;
} elseif ($breakSymbol && $this->char() == $breakSymbol) {
break;
} elseif ($this->char() == '\\') {
$this->next();
$value .= $this->char();
} else {
$value .= $this->char();
}
}
return $value;
}
/**
* Get array member key or return false if none present
*
* @return bool|string
*/
public function getMemberKey()
{
$value = '';
if ($this->isWhiteSpace()) {
return $value;
}
$quoteStart = $this->isQuote();
if ($quoteStart) {
$closeQuote = $this->char();
} else {
$closeQuote = false;
$value .= $this->char();
}
while ($this->next()) {
if ($closeQuote) {
if ($this->char() == $closeQuote) {
$closeQuote = false;
continue;
}
$value .= $this->char();
} elseif ($this->char() == ':') {
$this->next();
return $value;
} elseif ($this->isStringBreak()) {
$this->prev();
break;
} else {
$value .= $this->char();
}
}
if ($quoteStart) {
$this->back(strlen($value) + 1);
} else {
$this->back(strlen($value) - 1);
}
return false;
}
/**
* Get array value for method args
*
* Parses arrays demarcated via open/closing brackets. Keys/value pairs are separated by a
* single colon character. Multi-dimensional arrays are supported. Example input:
*
* [key:value, "key2":"value2", [
* [123, foo],
* ]]
*
* @return array
*/
public function getArray()
{
$values = [];
if (!$this->isArray()) {
return $values;
}
$this->incArrayDepth();
while ($this->next()) {
if ($this->char() == ']') {
break;
} elseif ($this->isWhiteSpace() || $this->char() == ',') {
continue;
}
$key = $this->getMemberKey();
if ($this->isNumeric()) {
$val = $this->getNumber();
} elseif ($this->isArray()) {
$val = $this->getArray();
} else {
$val = $this->getString();
}
if ($key) {
$values[$key] = $val;
} else {
$values[] = $val;
}
}
$this->decArrayDepth();
return $values;
}
/**
* Return the internal array depth counter
*
* @return int
*/
protected function getArrayDepth()
{
return $this->arrayDepth;
}
/**
* Increment the internal array depth counter
*
* @return void
*/
protected function incArrayDepth()
{
$this->arrayDepth++;
}
/**
* Decrement the internal array depth counter
*
* If depth is already 0 do nothing
*
* @return void
*/
protected function decArrayDepth()
{
if ($this->arrayDepth == 0) {
return;
}
$this->arrayDepth--;
}
/**
* Return true if current char is a number
*
* @return boolean
*/
public function isNumeric()
{
return $this->char() >= '0' && $this->char() <= '9';
}
/**
* Return true if current char is quote or apostrophe
*
* @return boolean
*/
public function isQuote()
{
return $this->char() == '"' || $this->char() == "'";
}
/**
* Retrun true if current char is opening boundary for an array
*
* @return bool
*/
public function isArray()
{
return $this->char() == '[';
}
/**
* Return true if current char is closing boundary for string
*
* @return bool
*/
public function isStringBreak()
{
if ($this->getArrayDepth() == 0 && ($this->isWhiteSpace() || $this->char() == ',' || $this->char() == ')')) {
return true;
} elseif ($this->getArrayDepth() > 0 && ($this->char() == ',' || $this->char() == ']')) {
return true;
}
return false;
}
/**
* Return array of arguments for method
*
* @return array
*/
public function getMethodArgs()
{
$value = [];
while ($this->next() && $this->char() != ')') {
if ($this->isWhiteSpace() || $this->char() == ',') {
continue;
} elseif ($this->isNumeric()) {
$value[] = $this->getNumber();
} elseif ($this->isArray()) {
$value[] = $this->getArray();
} else {
$value[] = $this->getString();
}
}
return $value;
}
/**
* Return number value for method args
*
* @return float
*/
public function getNumber()
{
$value = $this->char();
while (($this->isNumeric() || $this->char() == '.') && $this->next()) {
$value .= $this->char();
}
if (!$this->isNumeric()) {
$this->prev();
}
return (float)$value;
}
}