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<?php |
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declare(strict_types=1); |
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namespace Mailcode; |
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class Mailcode_Parser_Statement_Info_Variables |
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{ |
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/** |
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* @var Mailcode_Parser_Statement_Info |
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*/ |
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private $info; |
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/** |
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* @var Mailcode_Parser_Statement_Tokenizer |
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*/ |
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private $tokenizer; |
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public function __construct(Mailcode_Parser_Statement_Info $info, Mailcode_Parser_Statement_Tokenizer $tokenizer) |
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{ |
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$this->info = $info; |
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$this->tokenizer = $tokenizer; |
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} |
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/** |
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* Whether the whole statement is a variable being assigned a value. |
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* |
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* @return bool |
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*/ |
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public function isAssignment() : bool |
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{ |
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$variable = $this->getByIndex(0); |
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$operand = $this->info->getOperandByIndex(1); |
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$value = $this->info->getTokenByIndex(2); |
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if($variable && $operand && $value && $operand->isAssignment()) |
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{ |
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return true; |
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} |
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return false; |
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} |
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/** |
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* Whether the whole statement is a variable being compared to something. |
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* |
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* @return bool |
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*/ |
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public function isComparison() : bool |
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{ |
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$variable = $this->getByIndex(0); |
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$operand = $this->info->getOperandByIndex(1); |
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$value = $this->info->getTokenByIndex(2); |
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if($variable && $operand && $value && $operand->isComparator()) |
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{ |
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return true; |
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} |
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return false; |
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} |
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/** |
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* Retrieves all variables used in the statement. |
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* |
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* @return Mailcode_Variables_Variable[] |
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* @throws Mailcode_Exception |
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*/ |
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public function getAll() : array |
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{ |
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$result = array(); |
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$tokens = $this->tokenizer->getTokens(); |
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foreach($tokens as $token) |
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{ |
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if($token instanceof Mailcode_Parser_Statement_Tokenizer_Token_Variable) |
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{ |
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$result[] = $token->getVariable(); |
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} |
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} |
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return $result; |
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} |
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/** |
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* Retrieves a variable by its position in the command's parameters. |
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* Returns null if there is no parameter at the specified index, or |
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* if it is of another type. |
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* |
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* @param int $index Zero-based index. |
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* @return Mailcode_Parser_Statement_Tokenizer_Token_Variable|NULL |
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*/ |
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public function getByIndex(int $index) : ?Mailcode_Parser_Statement_Tokenizer_Token_Variable |
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{ |
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$token = $this->info->getTokenByIndex($index); |
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if($token instanceof Mailcode_Parser_Statement_Tokenizer_Token_Variable) |
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{ |
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return $token; |
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} |
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return null; |
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} |
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} |
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Mistralys /
mailcode
