[2.0] Fixed warning in semantical error reporting (strpos with length over dql...

[2.0] Fixed warning in semantical error reporting (strpos with length over dql length). Fixed wrong grammar rule. Fixed wrong token position on semantical error reporting. Added more semantical checks in UpdateItem

lib/Doctrine/ORM/Query/Parser.php

@@ -320,14 +320,20 @@ class Parser
             $token = $this->_lexer->lookahead;
         }
         
+        // Minimum exposed chars ahead of token
+        $distance = 12;
+        
         // Find a position of a final word to display in error string
         $dql = $this->_query->getDql();
-        $pos = strpos($dql, ' ', $token['position'] + 10);
-        $length = ($pos !== false) ? $pos - $token['position'] : 10;
+        $length = strlen($dql);
+        $pos = $token['position'] + $distance;
+        $pos = strpos($dql, ' ', ($length > $pos) ? $pos : $length);
+        $length = ($pos !== false) ? $pos - $token['position'] : $distance;
         
         // Building informative message
-        $message = 'line 0, col ' . (isset($token['position']) ? $token['position'] : '-1') 
-                 . " near '" . substr($dql, $token['position'], $length) . "': Error: " . $message;
+        $message = 'line 0, col ' . (
+            (isset($token['position']) && $token['position'] > 0) ? $token['position'] : '-1'
+        ) . " near '" . substr($dql, $token['position'], $length) . "': Error: " . $message;
 
         throw \Doctrine\ORM\Query\QueryException::semanticalError($message);
     }
@@ -454,7 +460,9 @@ class Parser
         $exprStack = array_pop($this->_deferredPathExpressionStacks);
 
         foreach ($exprStack as $item) {
-            $this->_validatePathExpression($item['pathExpression'], $item['nestingLevel']);
+            $this->_validatePathExpression(
+                $item['pathExpression'], $item['nestingLevel'], $item['token']
+            );
         }
     }
     
@@ -469,13 +477,16 @@ class Parser
      *
      * @param PathExpression $pathExpression
      * @param integer $nestingLevel
+     * @param array $token
      * @return integer
      */
-    private function _validatePathExpression(AST\PathExpression $pathExpression, $nestingLevel)
+    private function _validatePathExpression(AST\PathExpression $pathExpression, $nestingLevel = null, $token = null)
     {
         $identificationVariable = $pathExpression->getIdentificationVariable();
+        $nestingLevel = ($nestingLevel !== null) ?: $this->_nestingLevel;
+        $token = ($token) ?: $this->_lexer->lookahead;
         
-        $this->_validateIdentificationVariable($identificationVariable, $nestingLevel);
+        $this->_validateIdentificationVariable($identificationVariable, $nestingLevel, $token);
         
         $class = $this->_queryComponents[$identificationVariable]['metadata'];
         $stateField = $collectionField = null;
@@ -483,17 +494,24 @@ class Parser
         foreach ($pathExpression->getParts() as $field) {
             // Check if it is not in a state field
             if ($stateField !== null) {
-                $this->semanticalError('Cannot navigate through state field named ' . $stateField);
+                $this->semanticalError(
+                    'Cannot navigate through state field named ' . $stateField, $token
+                );
             }
             
             // Check if it is not a collection field
             if ($collectionField !== null) {
-                $this->semanticalError('Can not navigate through collection-valued field named ' . $collectionField);
+                $this->semanticalError(
+                    'Cannot navigate through collection-valued field named ' . $collectionField, 
+                    $token
+                );
             }
             
             // Check if field exists
             if ( ! isset($class->associationMappings[$field]) && ! isset($class->fieldMappings[$field])) {
-                $this->semanticalError('Class ' . $class->name . ' has no field named ' . $field);
+                $this->semanticalError(
+                    'Class ' . $class->name . ' has no field named ' . $field, $token
+                );
             }
             
             if (isset($class->fieldMappings[$field])) {
@@ -547,7 +565,7 @@ class Parser
                 $semanticalError .= ' ' . implode(' or ', $expectedStringTypes) . ' expected.';
             }
             
-            $this->semanticalError($semanticalError);
+            $this->semanticalError($semanticalError, $token);
         }
         
         // We need to force the type in PathExpression
@@ -562,20 +580,27 @@ class Parser
      *
      * @param string $idVariable
      * @param integer $nestingLevel
+     * @param array $token
      * @return array Query Component
      */
-    private function _validateIdentificationVariable($idVariable, $nestingLevel)
+    private function _validateIdentificationVariable($idVariable, $nestingLevel = null, $token = null)
     {
-         if ( ! isset($this->_queryComponents[$idVariable])) {
+        $nestingLevel = ($nestingLevel !== null) ?: $this->_nestingLevel;
+        $token = ($token) ?: $this->_lexer->lookahead;
+    
+        if ( ! isset($this->_queryComponents[$idVariable])) {
+            echo '[Query Components: ' . var_export($this->_queryComponents, true) . ']';
+        
             $this->semanticalError(
-                "Could not find '$idVariable' in query components"
+                "Could not find '$idVariable' in query components", $token
             );
         }
         
         // Validate if identification variable nesting level is lower or equal than the current one
         if ($this->_queryComponents[$idVariable]['nestingLevel'] > $nestingLevel) {
             $this->semanticalError(
-                "Query component '$idVariable' is not in the same nesting level of its declaration"
+                "Query component '$idVariable' is not in the same nesting level of its declaration",
+                $token
             );
         }
         
@@ -732,13 +757,14 @@ class Parser
      */
     public function JoinAssociationPathExpression()
     {
+        $token = $this->_lexer->lookahead;
         $identificationVariable = $this->IdentificationVariable();
         $this->match('.');
         $this->match(Lexer::T_IDENTIFIER);
         $field = $this->_lexer->token['value'];
         
         // Validating IdentificationVariable (it was already defined previously)
-        $this->_validateIdentificationVariable($identificationVariable, $this->_nestingLevel);
+        $this->_validateIdentificationVariable($identificationVariable, null, $token);
         
         // Validating association field (*-to-one or *-to-many)
         $class = $this->_queryComponents[$identificationVariable]['metadata'];
@@ -761,6 +787,7 @@ class Parser
      */
     public function PathExpression($expectedType)
     {
+        $token = $this->_lexer->lookahead;
         $identificationVariable = $this->IdentificationVariable();
         $parts = array();
 
@@ -780,6 +807,7 @@ class Parser
             $exprStack[] = array(
                 'pathExpression' => $pathExpr,
                 'nestingLevel'   => $this->_nestingLevel,
+                'token'          => $token,
             );
             array_push($this->_deferredPathExpressionStacks, $exprStack);
 
@@ -787,7 +815,7 @@ class Parser
         }
 
         // Apply PathExpression validation normally (not in defer mode)
-        $this->_validatePathExpression($pathExpr, $this->_nestingLevel);
+        $this->_validatePathExpression($pathExpr, $this->_nestingLevel, $token);
         
         return $pathExpr;
     }
@@ -926,6 +954,7 @@ class Parser
     public function UpdateClause()
     {
         $this->match(Lexer::T_UPDATE);
+        $token = $this->_lexer->lookahead;
         $abstractSchemaName = $this->AbstractSchemaName();
         $aliasIdentificationVariable = null;
 
@@ -934,32 +963,34 @@ class Parser
         }
 
         if ($this->_lexer->isNextToken(Lexer::T_IDENTIFIER)) {
+            $token = $this->_lexer->lookahead;
             $aliasIdentificationVariable = $this->AliasIdentificationVariable();
         } else {
             $aliasIdentificationVariable = $abstractSchemaName;
         }
-
-        $this->match(Lexer::T_SET);
-        $updateItems = array();
-        $updateItems[] = $this->UpdateItem();
-
-        while ($this->_lexer->isNextToken(',')) {
-            $this->match(',');
-            $updateItems[] = $this->UpdateItem();
-        }
-
-        $classMetadata = $this->_em->getClassMetadata($abstractSchemaName);
+        
+        $class = $this->_em->getClassMetadata($abstractSchemaName);
 
         // Building queryComponent
         $queryComponent = array(
-            'metadata'     => $classMetadata,
+            'metadata'     => $class,
             'parent'       => null,
             'relation'     => null,
             'map'          => null,
             'nestingLevel' => $this->_nestingLevel,
+            'token'        => $token,
         );
         $this->_queryComponents[$aliasIdentificationVariable] = $queryComponent;
 
+        $this->match(Lexer::T_SET);
+        $updateItems = array();
+        $updateItems[] = $this->UpdateItem();
+
+        while ($this->_lexer->isNextToken(',')) {
+            $this->match(',');
+            $updateItems[] = $this->UpdateItem();
+        }
+
         $updateClause = new AST\UpdateClause($abstractSchemaName, $updateItems);
         $updateClause->setAliasIdentificationVariable($aliasIdentificationVariable);
 
@@ -979,27 +1010,34 @@ class Parser
             $this->match(Lexer::T_FROM);
         }
 
+        $token = $this->_lexer->lookahead;
         $deleteClause = new AST\DeleteClause($this->AbstractSchemaName());
+        $aliasIdentificationVariable = null;
 
         if ($this->_lexer->isNextToken(Lexer::T_AS)) {
             $this->match(Lexer::T_AS);
         }
 
         if ($this->_lexer->isNextToken(Lexer::T_IDENTIFIER)) {
-            $deleteClause->setAliasIdentificationVariable($this->AliasIdentificationVariable());
+            $token = $this->_lexer->lookahead;
+            $aliasIdentificationVariable = $this->AliasIdentificationVariable();
         } else {
-            $deleteClause->setAliasIdentificationVariable($deleteClause->getAbstractSchemaName());
+            $aliasIdentificationVariable = $deleteClause->getAbstractSchemaName();
         }
-
-        $classMetadata = $this->_em->getClassMetadata($deleteClause->getAbstractSchemaName());
+        
+        $deleteClause->setAliasIdentificationVariable($aliasIdentificationVariable);
+        $class = $this->_em->getClassMetadata($deleteClause->getAbstractSchemaName());
+        
+        // Building queryComponent
         $queryComponent = array(
-            'metadata'     => $classMetadata,
+            'metadata'     => $class,
             'parent'       => null,
             'relation'     => null,
             'map'          => null,
             'nestingLevel' => $this->_nestingLevel,
+            'token'        => $token,
         );
-        $this->_queryComponents[$deleteClause->getAliasIdentificationVariable()] = $queryComponent;
+        $this->_queryComponents[$aliasIdentificationVariable] = $queryComponent;
 
         return $deleteClause;
     }
@@ -1151,25 +1189,31 @@ class Parser
      */
     public function UpdateItem()
     {
-        $peek = $this->_lexer->glimpse();
-        $identVariable = null;
-
-        if ($peek['value'] == '.') {
-            $identVariable = $this->IdentificationVariable();
-            $this->match('.');
-        } else {
-            throw QueryException::missingAliasQualifier();
-        }
-
+        $token = $this->_lexer->lookahead;
+        $identificationVariable = $this->IdentificationVariable();
+            
+        // Validate if IdentificationVariable is defined
+        $queryComponent = $this->_validateIdentificationVariable($identificationVariable, null, $token);
+            
+        $this->match('.');
         $this->match(Lexer::T_IDENTIFIER);
         $field = $this->_lexer->token['value'];
         
+        // Check if field exists
+        $class = $queryComponent['metadata'];
+        
+        if ( ! isset($class->associationMappings[$field]) && ! isset($class->fieldMappings[$field])) {
+            $this->semanticalError(
+                'Class ' . $class->name . ' has no field named ' . $field, $token
+            );
+        }
+        
         $this->match('=');
         
         $newValue = $this->NewValue();
 
         $updateItem = new AST\UpdateItem($field, $newValue);
-        $updateItem->setIdentificationVariable($identVariable);
+        $updateItem->setIdentificationVariable($identificationVariable);
 
         return $updateItem;
     }
@@ -1185,10 +1229,11 @@ class Parser
         $glimpse = $this->_lexer->glimpse();
         
         if ($glimpse['value'] != '.') {
+            $token = $this->_lexer->lookahead;
             $identificationVariable = $this->IdentificationVariable();
             
             // Validate if IdentificationVariable is defined
-            $this->_validateIdentificationVariable($identificationVariable, $this->_nestingLevel);
+            $this->_validateIdentificationVariable($identificationVariable, null, $token);
             
             return $identificationVariable;
         }
@@ -1210,10 +1255,11 @@ class Parser
         $glimpse = $this->_lexer->glimpse();
         
         if ($glimpse['value'] != '.') {
+            $token = $this->_lexer->lookahead;
             $expr = $this->ResultVariable();
             
             // Check if ResultVariable is defined in query components
-            $queryComponent = $this->_validateIdentificationVariable($expr, $this->_nestingLevel);
+            $queryComponent = $this->_validateIdentificationVariable($expr, null, $token);
             
             // Outer defininition used in inner subselect is not enough.
             // ResultVariable exists in queryComponents, check nesting level
@@ -1342,6 +1388,7 @@ class Parser
             $this->match(Lexer::T_AS);
         }
 
+        $token = $this->_lexer->lookahead;
         $aliasIdentificationVariable = $this->AliasIdentificationVariable();
         $classMetadata = $this->_em->getClassMetadata($abstractSchemaName);
 
@@ -1352,6 +1399,7 @@ class Parser
             'relation'     => null,
             'map'          => null,
             'nestingLevel' => $this->_nestingLevel,
+            'token'        => $token,
         );
         $this->_queryComponents[$aliasIdentificationVariable] = $queryComponent;
 
@@ -1386,12 +1434,14 @@ class Parser
         }
 
         $this->match(Lexer::T_JOIN);
+        
         $joinPathExpression = $this->JoinAssociationPathExpression();
 
         if ($this->_lexer->isNextToken(Lexer::T_AS)) {
             $this->match(Lexer::T_AS);
         }
 
+        $token = $this->_lexer->lookahead;
         $aliasIdentificationVariable = $this->AliasIdentificationVariable();
 
         // Verify that the association exists.
@@ -1413,6 +1463,7 @@ class Parser
             'relation'     => $parentClass->getAssociationMapping($assocField),
             'map'          => null,
             'nestingLevel' => $this->_nestingLevel,
+            'token'        => $token,
         );
         $this->_queryComponents[$aliasIdentificationVariable] = $joinQueryComponent;
 
@@ -1487,12 +1538,14 @@ class Parser
             }
 
             if ($this->_lexer->isNextToken(Lexer::T_IDENTIFIER)) {
+                $token = $this->_lexer->lookahead;
                 $resultVariable = $this->ResultVariable();
                 
                 // Include ResultVariable in query components.
                 $this->_queryComponents[$resultVariable] = array(
                     'resultvariable' => $expression,
                     'nestingLevel'   => $this->_nestingLevel,
+                    'token'          => $token,
                 );
             }
         } else {
@@ -1538,6 +1591,7 @@ class Parser
         }
 
         if ($this->_lexer->isNextToken(Lexer::T_IDENTIFIER)) {
+            $token = $this->_lexer->lookahead;
             $resultVariable = $this->ResultVariable();
             $expr->setFieldIdentificationVariable($resultVariable);
                 
@@ -1545,6 +1599,7 @@ class Parser
             $this->_queryComponents[$resultVariable] = array(
                 'resultvariable' => $expr,
                 'nestingLevel'   => $this->_nestingLevel,
+                'token'          => $token,
             );
         }