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| <?php | |
| namespace Shellbox\ShellParser; | |
| use Shellbox\ShellboxError; | |
| use Wikimedia\WikiPEG\Location; | |
| /** | |
| * Exception class for shell command syntax errors. By default the message uses | |
| * multiple lines to show the exact location of the syntax error. | |
| */ | |
| class ShellSyntaxError extends ShellboxError { | |
| /** @var string */ | |
| private $originalMessage; | |
| /** @var Location */ | |
| private $location; | |
| /** @var string */ | |
| private $input; | |
| /** @var bool */ | |
| private $contextEnabled; | |
| /** | |
| * @internal | |
| * @param string $message The message from the PEG | |
| * @param Location $location The error location | |
| * @param string $input The complete input text | |
| */ | |
| public function __construct( $message, Location $location, $input ) { | |
| parent::__construct( $message ); | |
| $this->originalMessage = $message; | |
| $this->location = $location; | |
| $this->input = $input; | |
| $this->contextEnabled = true; | |
| $this->updateMessage(); | |
| } | |
| /** | |
| * Enable multi-line context | |
| */ | |
| public function enableContext() { | |
| $this->contextEnabled = true; | |
| $this->updateMessage(); | |
| } | |
| /** | |
| * Disable multi-line context | |
| */ | |
| public function disableContext() { | |
| $this->contextEnabled = false; | |
| $this->updateMessage(); | |
| } | |
| /** | |
| * Update the message (stored in the parent) according to the contextEnabled | |
| * setting. | |
| */ | |
| private function updateMessage() { | |
| if ( !$this->contextEnabled ) { | |
| $this->message = $this->originalMessage; | |
| return; | |
| } | |
| $lines = explode( "\n", $this->input ); | |
| $line = $lines[$this->location->line - 1] ?? ''; | |
| $this->message = $this->originalMessage . "\n" . | |
| $line . "\n" . | |
| str_repeat( ' ', $this->location->column - 1 ) . '^'; | |
| } | |
| } |