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<?php |
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/** |
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* File containing the {@see Mailcode_Parser_Statement_Tokenizer} class. |
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* |
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* @package Mailcode |
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* @subpackage Parser |
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* @see Mailcode_Parser_Statement_Tokenizer |
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*/ |
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declare(strict_types=1); |
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namespace Mailcode; |
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/** |
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* Mailcode statement tokenizer: parses a mailcode statement |
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* into its logical parts. |
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* |
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* @package Mailcode |
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* @subpackage Parser |
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* @author Sebastian Mordziol <[email protected]> |
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*/ |
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class Mailcode_Parser_Statement_Info |
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{ |
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/** |
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* @var Mailcode_Parser_Statement_Tokenizer |
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*/ |
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protected $tokenizer; |
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/** |
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* @var Mailcode_Parser_Statement_Tokenizer_Token[] |
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*/ |
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protected $tokens = array(); |
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public function __construct(Mailcode_Parser_Statement_Tokenizer $tokenizer) |
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{ |
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$this->tokenizer = $tokenizer; |
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$this->tokens = $this->tokenizer->getTokens(); |
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} |
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/** |
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* Whether the whole statement is a variable being assigned a value. |
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* |
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* @return bool |
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*/ |
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public function isVariableAssignment() : bool |
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{ |
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$variable = $this->getVariableByIndex(0); |
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$operand = $this->getOperandByIndex(1); |
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$value = $this->getTokenByIndex(2); |
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if($variable && $operand && $value && $operand->isAssignment()) |
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{ |
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return true; |
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} |
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return false; |
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} |
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/** |
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* Whether the whole statement is a variable being compared to something. |
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* |
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* @return bool |
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*/ |
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public function isVariableComparison() : bool |
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{ |
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$variable = $this->getVariableByIndex(0); |
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$operand = $this->getOperandByIndex(1); |
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$value = $this->getTokenByIndex(2); |
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if($variable && $operand && $value && $operand->isComparator()) |
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{ |
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return true; |
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} |
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return false; |
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} |
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/** |
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* Retrieves all variables used in the statement. |
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* |
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* @return \Mailcode\Mailcode_Variables_Variable[] |
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*/ |
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public function getVariables() |
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{ |
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$result = array(); |
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foreach($this->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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public function getVariableByIndex(int $index) : ?Mailcode_Parser_Statement_Tokenizer_Token_Variable |
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{ |
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$token = $this->getTokenByIndex($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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public function getKeywordByIndex(int $index) : ?Mailcode_Parser_Statement_Tokenizer_Token_Keyword |
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{ |
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$token = $this->getTokenByIndex($index); |
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if($token instanceof Mailcode_Parser_Statement_Tokenizer_Token_Keyword) |
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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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public function getOperandByIndex(int $index) : ?Mailcode_Parser_Statement_Tokenizer_Token_Operand |
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{ |
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$token = $this->getTokenByIndex($index); |
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if($token instanceof Mailcode_Parser_Statement_Tokenizer_Token_Operand) |
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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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public function getTokenByIndex(int $index) : ?Mailcode_Parser_Statement_Tokenizer_Token |
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{ |
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if(isset($this->tokens[$index])) |
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{ |
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return $this->tokens[$index]; |
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} |
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return null; |
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} |
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public function hasTokenAtIndex(int $index) : bool |
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{ |
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return isset($this->tokens[$index]); |
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} |
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} |
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Mistralys /
mailcode
