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update parser_sql

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This commit is contained in:
shreesh arora
2021-05-03 01:06:30 +05:30
parent b7ef2391cc
commit d91def3d84
172 changed files with 8743 additions and 2571 deletions
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53
tools/parser_sql/processors/SelectExpressionProcessor.php
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@@ -30,23 +30,21 @@
* DAMAGE.
*/
require_once(dirname(__FILE__) . '/AbstractProcessor.php');
require_once(dirname(__FILE__) . '/ExpressionListProcessor.php');
require_once(dirname(__FILE__) . '/../utils/ExpressionType.php');
namespace PHPSQLParser\processors;
use PHPSQLParser\utils\ExpressionType;
/**
*
*
* This class processes the SELECT expressions.
*
*
* @author arothe
*
*
*/
class SelectExpressionProcessor extends AbstractProcessor {
private $expressionListProcessor;
public function __construct() {
$this->expressionListProcessor = new ExpressionListProcessor();
protected function processExpressionList($unparsed) {
$processor = new ExpressionListProcessor($this->options);
return $processor->process($unparsed);
}
/**
@@ -62,8 +60,8 @@ class SelectExpressionProcessor extends AbstractProcessor {
}
/*
* Determine if there is an explicit alias after the AS clause.
* If AS is found, then the next non-whitespace token is captured as the alias.
* Determine if there is an explicit alias after the AS clause.
* If AS is found, then the next non-whitespace token is captured as the alias.
* The tokens after (and including) the AS are removed.
*/
$base_expr = "";
@@ -102,7 +100,14 @@ class SelectExpressionProcessor extends AbstractProcessor {
$base_expr .= $token;
}
$stripped = $this->expressionListProcessor->process($stripped);
if ($alias) {
// remove quotation from the alias
$alias['no_quotes'] = $this->revokeQuotation($alias['name']);
$alias['name'] = trim($alias['name']);
$alias['base_expr'] = trim($alias['base_expr']);
}
$stripped = $this->processExpressionList($stripped);
// TODO: the last part can also be a comment, don't use array_pop
@@ -118,34 +123,24 @@ class SelectExpressionProcessor extends AbstractProcessor {
if ($this->isReserved($prev) || $this->isConstant($prev) || $this->isAggregateFunction($prev)
|| $this->isFunction($prev) || $this->isExpression($prev) || $this->isSubQuery($prev)
|| $this->isColumnReference($prev) || $this->isBracketExpression($prev)) {
|| $this->isColumnReference($prev) || $this->isBracketExpression($prev)|| $this->isCustomFunction($prev)) {
$alias = array('as' => false, 'name' => trim($last['base_expr']),
'no_quotes' => $this->revokeQuotation($last['base_expr']),
'base_expr' => trim($last['base_expr']));
// remove the last token
array_pop($tokens);
$base_expr = join("", $tokens);
}
}
if (!$alias) {
$base_expr = join("", $tokens);
} else {
/* remove escape from the alias */
$alias['no_quotes'] = $this->revokeQuotation($alias['name']);
$alias['name'] = trim($alias['name']);
$alias['base_expr'] = trim($alias['base_expr']);
}
$base_expr = $expression;
// TODO: this is always done with $stripped, how we do it twice?
$processed = $this->expressionListProcessor->process($tokens);
$processed = $this->processExpressionList($tokens);
// if there is only one part, we copy the expr_type
// in all other cases we use "expression" as global type
// in all other cases we use "EXPRESSION" as global type
$type = ExpressionType::EXPRESSION;
$no_quotes = $this->revokeQuotation(trim($base_expr));
if (count($processed) === 1) {
if (!$this->isSubQuery($processed[0])) {
$type = $processed[0]['expr_type'];
@@ -162,9 +157,9 @@ class SelectExpressionProcessor extends AbstractProcessor {
if (!empty($no_quotes)) {
$result['no_quotes'] = $no_quotes;
}
$result['sub_tree'] = $processed;
$result['sub_tree'] = (empty($processed) ? false : $processed);
return $result;
}
}
?>
?>