/**
* This parses a query.
*
* @param OpExpr $expr_str
* @return array of MatchResult
*/
function parseExpression($expr_str)
{
$parser = new SearchCommandParser();
$lexer = new SearchCommandLexer($expr_str);
// $parser->PrintTrace();
$use_internal = false;
try {
while ($lexer->yylex()) {
//print "\n" . $lexer->value . "\n";
$parser->doParse($lexer->token, $lexer->value);
if (!$parser->isExprOk()) {
$use_internal = true;
$expr_str = getExpressionLocalityString($expr_str, $lexer->offset, 20);
throw new Exception(sprintf(_kt("Parsing problem near '%s' in '%s' of expression."), $lexer->value, $expr_str));
}
}
// we are now done
$parser->doParse(0, 0);
if (!$parser->isExprOk()) {
$use_internal = true;
$expr_str = getExpressionLocalityString($expr_str, $lexer->offset, 20);
throw new Exception(sprintf(_kt("There is a problem parsing the expression '%s'"), $expr_str));
}
} catch (ResolutionException $e) {
throw $e;
} catch (Exception $e) {
if ($use_internal) {
throw $e;
}
$expr_str = getExpressionLocalityString($expr_str, $lexer->offset, 20);
throw new Exception(sprintf(_kt("Parsing problem near '%s' of expression '%s'."), $lexer->value, $expr_str));
}
return $parser->getExprResult();
}
/**
* Output debug information to output (php://output stream)
*/
static function PrintTrace()
{
self::$yyTraceFILE = fopen('php://output', 'w');
self::$yyTracePrompt = '';
}
