/**
* @test
*/
public function itDumpsAHumanReadableParseTableWithExplainingComments()
{
$grammar = new ExampleGrammar();
$analyzer = new Analyzer();
$result = $analyzer->analyze($grammar);
$dumper = new DebugTableDumper($grammar);
$dumped = $dumper->dump($result->getParseTable());
$this->assertStringEqualsFile(__DIR__ . '/res/table/debug.php', $dumped);
}
/**
* @test
*/
public function theWrittenTableShouldBeAsCompactAsPossible()
{
$grammar = new ExampleGrammar();
$analyzer = new Analyzer();
$table = $analyzer->analyze($grammar)->getParseTable();
$dumper = new ProductionTableDumper();
$dumped = $dumper->dump($table);
$this->assertStringEqualsFile(__DIR__ . '/res/table/production.php', $dumped);
}
/**
* Constructor.
*
* @param \Dissect\Parser\Grammar $grammar The grammar.
* @param array $parseTable If given, the parser doesn't have to analyze the grammar.
*/
public function __construct(P\Grammar $grammar, array $parseTable = null)
{
$this->grammar = $grammar;
if ($parseTable) {
$this->parseTable = $parseTable;
} else {
$analyzer = new Analyzer();
$this->parseTable = $analyzer->analyze($grammar)->getParseTable();
}
}
protected function execute(InputInterface $input, OutputInterface $output)
{
$class = strtr($input->getArgument('grammar-class'), '/', '\\');
$formatter = $this->getHelperSet()->get('formatter');
$output->writeln('<info>Analyzing...</info>');
$output->writeln('');
if (!class_exists($class)) {
$output->writeln(array($formatter->formatBlock(sprintf('The class "%s" could not be found.', $class), 'error', true)));
return 1;
}
$grammar = new $class();
if ($dir = $input->getOption('output-dir')) {
$cwd = rtrim(getcwd(), DIRECTORY_SEPARATOR);
$outputDir = $cwd . DIRECTORY_SEPARATOR . $dir;
} else {
$refl = new ReflectionClass($class);
$outputDir = pathinfo($refl->getFileName(), PATHINFO_DIRNAME);
}
$analyzer = new Analyzer();
$automaton = null;
try {
$result = $analyzer->analyze($grammar);
$conflicts = $result->getResolvedConflicts();
$automaton = $result->getAutomaton();
$table = $result->getParseTable();
if ($conflicts) {
foreach ($conflicts as $conflict) {
$output->writeln($this->formatConflict($conflict));
}
$output->writeln(sprintf("<info><comment>%d</comment> conflicts in total", count($conflicts)));
$output->writeln('');
}
$output->writeln('<info>Writing the parse table...</info>');
$fileName = $outputDir . DIRECTORY_SEPARATOR . 'parse_table.php';
if ($input->getOption('debug')) {
$tableDumper = new DebugTableDumper($grammar);
} else {
$tableDumper = new ProductionTableDumper();
}
$code = $tableDumper->dump($table);
$ret = @file_put_contents($fileName, $code);
if ($ret === false) {
$output->writeln('<error>Error writing the parse table</error>');
} else {
$output->writeln('<info>Parse table written</info>');
}
} catch (ConflictException $e) {
$output->writeln(array($formatter->formatBlock(explode("\n", $e->getMessage()), 'error', true)));
$automaton = $e->getAutomaton();
}
if ($input->getOption('dfa')) {
$output->writeln('');
$automatonDumper = new AutomatonDumper($automaton);
if ($input->getOption('state') === null) {
$output->writeln('<info>Exporting the DFA...</info>');
$dot = $automatonDumper->dump();
$file = 'automaton.dot';
} else {
$state = (int) $input->getOption('state');
if (!$automaton->hasState($state)) {
$output->writeln(array($formatter->formatBlock(sprintf('The automaton has no state #%d', $state), 'error', true)));
return 1;
}
$output->writeln(sprintf('<info>Exporting the DFA state <comment>%d</comment>...', $state));
$dot = $automatonDumper->dumpState($state);
$file = sprintf('state_%d.dot', $state);
}
$fileName = $outputDir . DIRECTORY_SEPARATOR . $file;
$ret = @file_put_contents($fileName, $dot);
if ($ret === false) {
$output->writeln('<error>Error writing to the file</error>');
} else {
$output->writeln('<info>Successfully exported</info>');
}
}
return 0;
}
protected function setUp()
{
$analyzer = new Analyzer();
$automaton = $analyzer->analyze(new ExampleGrammar())->getAutomaton();
$this->dumper = new AutomatonDumper($automaton);
}