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doctrine-dbal
Commit 58a15786 authored by guilhermeblanco's avatar guilhermeblanco
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[2.0] Finished reorganization of grammar rules in DQL parser source code.... 

[2.0] Finished reorganization of grammar rules in DQL parser source code. Renamed some private methods.
parent 1299e838
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lib/Doctrine/ORM/Query/Parser.php
View file @ 58a15786
......@@ -110,11 +110,11 @@ class Parser
private $_queryComponents = array();
/**
* Sql tree walker
* Tree walker chain
*
* @var SqlTreeWalker
* @var TreeWalker
*/
private $_sqlTreeWalker;
private $_treeWalker;
/**
* Creates a new query parser object.
......@@ -129,6 +129,79 @@ class Parser
$this->_parserResult = new ParserResult();
}
/**
* Sets the custom tree walker.
*
* @param TreeWalker $treeWalker
*/
public function setTreeWalker($treeWalker)
{
$this->_treeWalker = $treeWalker;
}
/**
* Gets the lexer used by the parser.
*
* @return Doctrine\ORM\Query\Lexer
*/
public function getLexer()
{
return $this->_lexer;
}
/**
* Gets the ParserResult that is being filled with information during parsing.
*
* @return Doctrine\ORM\Query\ParserResult
*/
public function getParserResult()
{
return $this->_parserResult;
}
/**
* Gets the EntityManager used by the parser.
*
* @return EntityManager
*/
public function getEntityManager()
{
return $this->_em;
}
/**
* Registers a custom function that returns strings.
*
* @param string $name The function name.
* @param string $class The class name of the function implementation.
*/
public static function registerStringFunction($name, $class)
{
self::$_STRING_FUNCTIONS[$name] = $class;
}
/**
* Registers a custom function that returns numerics.
*
* @param string $name The function name.
* @param string $class The class name of the function implementation.
*/
public static function registerNumericFunction($name, $class)
{
self::$_NUMERIC_FUNCTIONS[$name] = $class;
}
/**
* Registers a custom function that returns date/time values.
*
* @param string $name The function name.
* @param string $class The class name of the function implementation.
*/
public static function registerDatetimeFunction($name, $class)
{
self::$_DATETIME_FUNCTIONS[$name] = $class;
}
/**
* Attempts to match the given token with the current lookahead token.
*
......@@ -183,57 +256,17 @@ class Parser
$this->syntaxError('end of string');
}
// Create SqlWalker who creates the SQL from the AST
$sqlWalker = $this->_sqlTreeWalker ?: new SqlWalker(
// Create TreeWalker who creates the SQL from the AST
$treeWalker = $this->_treeWalker ?: new SqlWalker(
$this->_query, $this->_parserResult, $this->_queryComponents
);
// Assign an SQL executor to the parser result
$this->_parserResult->setSqlExecutor($sqlWalker->getExecutor($AST));
return $this->_parserResult;
}
/**
* Sets the custom tree walker.
*
* @param SqlTreeWalker $sqlTreeWalker
*/
public function setSqlTreeWalker($sqlTreeWalker)
{
$this->_sqlTreeWalker = $sqlTreeWalker;
}
$this->_parserResult->setSqlExecutor($treeWalker->getExecutor($AST));
/**
* Gets the lexer used by the parser.
*
* @return Doctrine\ORM\Query\Lexer
*/
public function getLexer()
{
return $this->_lexer;
}
/**
* Gets the ParserResult that is being filled with information during parsing.
*
* @return Doctrine\ORM\Query\ParserResult
*/
public function getParserResult()
{
return $this->_parserResult;
}
/**
* Gets the EntityManager used by the parser.
*
* @return EntityManager
*/
public function getEntityManager()
{
return $this->_em;
}
/**
* Generates a new syntax error.
*
......@@ -320,6 +353,39 @@ class Parser
return ($peek['value'] === '(' && $nextpeek['type'] !== Lexer::T_SELECT);
}
/**
* Checks whether the function with the given name is a string function
* (a function that returns strings).
*
* @return boolean TRUE if the token type is a string function, FALSE otherwise.
*/
private function _isStringFunction($funcName)
{
return isset(self::$_STRING_FUNCTIONS[strtolower($funcName)]);
}
/**
* Checks whether the function with the given name is a numeric function
* (a function that returns numerics).
*
* @return boolean TRUE if the token type is a numeric function, FALSE otherwise.
*/
private function _isNumericFunction($funcName)
{
return isset(self::$_NUMERIC_FUNCTIONS[strtolower($funcName)]);
}
/**
* Checks whether the function with the given name is a datetime function
* (a function that returns date/time values).
*
* @return boolean TRUE if the token type is a datetime function, FALSE otherwise.
*/
private function _isDatetimeFunction($funcName)
{
return isset(self::$_DATETIME_FUNCTIONS[strtolower($funcName)]);
}
/**
* Checks whether the given token type indicates an aggregate function.
*
......@@ -332,6 +398,19 @@ class Parser
$tokenType == Lexer::T_COUNT;
}
/**
* Checks whether the current lookahead token of the lexer has the type
* T_ALL, T_ANY or T_SOME.
*
* @return boolean
*/
private function _isNextAllAnySome()
{
return $this->_lexer->lookahead['type'] === Lexer::T_ALL ||
$this->_lexer->lookahead['type'] === Lexer::T_ANY ||
$this->_lexer->lookahead['type'] === Lexer::T_SOME;
}
/**
* Checks whether the next 2 tokens start a subselect.
*
......@@ -779,6 +858,51 @@ class Parser
}
/**
* SelectClause ::= "SELECT" ["DISTINCT"] SelectExpression {"," SelectExpression}
*/
public function SelectClause()
{
$isDistinct = false;
$this->match(Lexer::T_SELECT);
// Check for DISTINCT
if ($this->_lexer->isNextToken(Lexer::T_DISTINCT)) {
$this->match(Lexer::T_DISTINCT);
$isDistinct = true;
}
// Process SelectExpressions (1..N)
$selectExpressions = array();
$selectExpressions[] = $this->SelectExpression();
while ($this->_lexer->isNextToken(',')) {
$this->match(',');
$selectExpressions[] = $this->SelectExpression();
}
return new AST\SelectClause($selectExpressions, $isDistinct);
}
/**
* SimpleSelectClause ::= "SELECT" ["DISTINCT"] SimpleSelectExpression
*/
public function SimpleSelectClause()
{
$distinct = false;
$this->match(Lexer::T_SELECT);
if ($this->_lexer->isNextToken(Lexer::T_DISTINCT)) {
$this->match(Lexer::T_DISTINCT);
$distinct = true;
}
$simpleSelectClause = new AST\SimpleSelectClause($this->SimpleSelectExpression());
$simpleSelectClause->setDistinct($distinct);
return $simpleSelectClause;
}
/**
* UpdateClause ::= "UPDATE" AbstractSchemaName [["AS"] AliasIdentificationVariable] "SET" UpdateItem {"," UpdateItem}*
*/
......@@ -825,62 +949,6 @@ class Parser
return $updateClause;
}
/**
* UpdateItem ::= [IdentificationVariable "."] {StateField | SingleValuedAssociationField} "=" NewValue
*/
public function UpdateItem()
{
$peek = $this->_lexer->glimpse();
$identVariable = null;
if ($peek['value'] == '.') {
$this->match(Lexer::T_IDENTIFIER);
$identVariable = $this->_lexer->token['value'];
$this->match('.');
} else {
throw QueryException::missingAliasQualifier();
}
$this->match(Lexer::T_IDENTIFIER);
$field = $this->_lexer->token['value'];
$this->match('=');
$newValue = $this->NewValue();
$updateItem = new AST\UpdateItem($field, $newValue);
$updateItem->setIdentificationVariable($identVariable);
return $updateItem;
}
/**
* NewValue ::= SimpleArithmeticExpression | StringPrimary | DatetimePrimary | BooleanPrimary |
* EnumPrimary | SimpleEntityExpression | "NULL"
*
* NOTE: Since it is not possible to correctly recognize individual types, here is the full
* grammar that needs to be supported:
*
* NewValue ::= SimpleArithmeticExpression | "NULL"
*
* SimpleArithmeticExpression covers all *Primary grammar rules and also SimplEntityExpression
*
* @todo Find why removal of InputParameter check causes ClassTableInheritanceTest to fail with
* wrong parameter count (Should be processed in Literal, part of SimpleArithmeticExpression)
*/
public function NewValue()
{
if ($this->_lexer->isNextToken(Lexer::T_NULL)) {
$this->match(Lexer::T_NULL);
return null;
} else if ($this->_lexer->isNextToken(Lexer::T_INPUT_PARAMETER)) {
$this->match(Lexer::T_INPUT_PARAMETER);
return new AST\InputParameter($this->_lexer->token['value']);
}
return $this->SimpleArithmeticExpression();
}
/**
* DeleteClause ::= "DELETE" ["FROM"] AbstractSchemaName [["AS"] AliasIdentificationVariable]
*/
......@@ -915,98 +983,228 @@ class Parser
}
/**
* SelectClause ::= "SELECT" ["DISTINCT"] SelectExpression {"," SelectExpression}
* FromClause ::= "FROM" IdentificationVariableDeclaration {"," IdentificationVariableDeclaration}*
*/
public function SelectClause()
public function FromClause()
{
$isDistinct = false;
$this->match(Lexer::T_SELECT);
// Check for DISTINCT
if ($this->_lexer->isNextToken(Lexer::T_DISTINCT)) {
$this->match(Lexer::T_DISTINCT);
$isDistinct = true;
$this->match(Lexer::T_FROM);
$identificationVariableDeclarations = array();
$identificationVariableDeclarations[] = $this->IdentificationVariableDeclaration();
while ($this->_lexer->isNextToken(',')) {
$this->match(',');
$identificationVariableDeclarations[] = $this->IdentificationVariableDeclaration();
}
// Process SelectExpressions (1..N)
$selectExpressions = array();
$selectExpressions[] = $this->SelectExpression();
return new AST\FromClause($identificationVariableDeclarations);
}
/**
* SubselectFromClause ::= "FROM" SubselectIdentificationVariableDeclaration {"," SubselectIdentificationVariableDeclaration}*
*/
public function SubselectFromClause()
{
$this->match(Lexer::T_FROM);
$identificationVariables = array();
$identificationVariables[] = $this->SubselectIdentificationVariableDeclaration();
while ($this->_lexer->isNextToken(',')) {
$this->match(',');
$selectExpressions[] = $this->SelectExpression();
$identificationVariables[] = $this->SubselectIdentificationVariableDeclaration();
}
return new AST\SelectClause($selectExpressions, $isDistinct);
return new AST\SubselectFromClause($identificationVariables);
}
/**
* FromClause ::= "FROM" IdentificationVariableDeclaration {"," IdentificationVariableDeclaration}*
* WhereClause ::= "WHERE" ConditionalExpression
*/
public function FromClause()
public function WhereClause()
{
$this->match(Lexer::T_FROM);
$identificationVariableDeclarations = array();
$identificationVariableDeclarations[] = $this->IdentificationVariableDeclaration();
$this->match(Lexer::T_WHERE);
return new AST\WhereClause($this->ConditionalExpression());
}
/**
* HavingClause ::= "HAVING" ConditionalExpression
*/
public function HavingClause()
{
$this->match(Lexer::T_HAVING);
return new AST\HavingClause($this->ConditionalExpression());
}
/**
* GroupByClause ::= "GROUP" "BY" GroupByItem {"," GroupByItem}*
*/
public function GroupByClause()
{
$this->match(Lexer::T_GROUP);
$this->match(Lexer::T_BY);
$groupByItems = array($this->GroupByItem());
while ($this->_lexer->isNextToken(',')) {
$this->match(',');
$identificationVariableDeclarations[] = $this->IdentificationVariableDeclaration();
$groupByItems[] = $this->GroupByItem();
}
return new AST\FromClause($identificationVariableDeclarations);
return new AST\GroupByClause($groupByItems);
}
/**
* OrderByClause ::= "ORDER" "BY" OrderByItem {"," OrderByItem}*
*/
public function OrderByClause()
{
$this->match(Lexer::T_ORDER);
$this->match(Lexer::T_BY);
$orderByItems = array();
$orderByItems[] = $this->OrderByItem();
while ($this->_lexer->isNextToken(',')) {
$this->match(',');
$orderByItems[] = $this->OrderByItem();
}
return new AST\OrderByClause($orderByItems);
}
/**
* SelectExpression ::=
* IdentificationVariable | StateFieldPathExpression |
* (AggregateExpression | "(" Subselect ")" | Function) [["AS"] ResultVariable]
* Subselect ::= SimpleSelectClause SubselectFromClause [WhereClause] [GroupByClause] [HavingClause] [OrderByClause]
*/
public function SelectExpression()
public function Subselect()
{
$this->_beginDeferredPathExpressionStack();
$subselect = new AST\Subselect($this->SimpleSelectClause(), $this->SubselectFromClause());
$this->_processDeferredPathExpressionStack();
$subselect->setWhereClause(
$this->_lexer->isNextToken(Lexer::T_WHERE) ? $this->WhereClause() : null
);
$subselect->setGroupByClause(
$this->_lexer->isNextToken(Lexer::T_GROUP) ? $this->GroupByClause() : null
);
$subselect->setHavingClause(
$this->_lexer->isNextToken(Lexer::T_HAVING) ? $this->HavingClause() : null
);
$subselect->setOrderByClause(
$this->_lexer->isNextToken(Lexer::T_ORDER) ? $this->OrderByClause() : null
);
return $subselect;
}
/**
* UpdateItem ::= [IdentificationVariable "."] {StateField | SingleValuedAssociationField} "=" NewValue
*/
public function UpdateItem()
{
$expression = null;
$fieldAliasIdentificationVariable = null;
$peek = $this->_lexer->glimpse();
$identVariable = null;
// First we recognize for an IdentificationVariable (DQL class alias)
if ($peek['value'] != '.' && $peek['value'] != '(' && $this->_lexer->lookahead['type'] === Lexer::T_IDENTIFIER) {
$expression = $this->IdentificationVariable();
} else if (($isFunction = $this->_isFunction()) !== false || $this->_isSubselect()) {
if ($isFunction) {
if ($this->_isAggregateFunction($this->_lexer->lookahead['type'])) {
$expression = $this->AggregateExpression();
} else {
$expression = $this->_Function();
}
} else {
$this->match('(');
$expression = $this->Subselect();
$this->match(')');
}
if ($peek['value'] == '.') {
$this->match(Lexer::T_IDENTIFIER);
$identVariable = $this->_lexer->token['value'];
$this->match('.');
} else {
throw QueryException::missingAliasQualifier();
}
if ($this->_lexer->isNextToken(Lexer::T_AS)) {
$this->match(Lexer::T_AS);
}
$this->match(Lexer::T_IDENTIFIER);
$field = $this->_lexer->token['value'];
$this->match('=');
$newValue = $this->NewValue();
if ($this->_lexer->isNextToken(Lexer::T_IDENTIFIER)) {
$fieldAliasIdentificationVariable = $this->ResultVariable();
}
$updateItem = new AST\UpdateItem($field, $newValue);
$updateItem->setIdentificationVariable($identVariable);
return $updateItem;
}
/**
* GroupByItem ::= IdentificationVariable | SingleValuedPathExpression
*
* @todo Finish this implementation
*/
public function GroupByItem()
{
return $this->SingleValuedPathExpression();
}
/**
* OrderByItem ::= (ResultVariable | StateFieldPathExpression) ["ASC" | "DESC"]
*
* @todo Support general SingleValuedPathExpression instead of only StateFieldPathExpression.
*/
public function OrderByItem()
{
// We need to check if we are in a ResultVariable or StateFieldPathExpression
$glimpse = $this->_lexer->glimpse();
if ($glimpse['value'] != '.') {
$expr = $this->ResultVariable();
// @todo Check if ResultVariable is defined somewhere
} else {
// Deny hydration of partial objects if doctrine.forcePartialLoad query hint not defined
if (
$this->_query->getHydrationMode() == Query::HYDRATE_OBJECT &&
! $this->_em->getConfiguration()->getAllowPartialObjects() &&
! $this->_query->getHint('doctrine.forcePartialLoad')
) {
throw DoctrineException::partialObjectsAreDangerous();
}
$expr = $this->StateFieldPathExpression();
}
$item = new AST\OrderByItem($expr);
$expression = $this->StateFieldPathExpression();
if ($this->_lexer->isNextToken(Lexer::T_ASC)) {
$this->match(Lexer::T_ASC);
$item->setAsc(true);
return $item;
}
if ($this->_lexer->isNextToken(Lexer::T_DESC)) {
$this->match(Lexer::T_DESC);
}
$item->setDesc(true);
return $item;
}
return new AST\SelectExpression($expression, $fieldAliasIdentificationVariable);
/**
* NewValue ::= SimpleArithmeticExpression | StringPrimary | DatetimePrimary | BooleanPrimary |
* EnumPrimary | SimpleEntityExpression | "NULL"
*
* NOTE: Since it is not possible to correctly recognize individual types, here is the full
* grammar that needs to be supported:
*
* NewValue ::= SimpleArithmeticExpression | "NULL"
*
* SimpleArithmeticExpression covers all *Primary grammar rules and also SimplEntityExpression
*
* @todo Find why removal of InputParameter check causes ClassTableInheritanceTest to fail with
* wrong parameter count (Should be processed in Literal, part of SimpleArithmeticExpression)
*/
public function NewValue()
{
if ($this->_lexer->isNextToken(Lexer::T_NULL)) {
$this->match(Lexer::T_NULL);
return null;
} else if ($this->_lexer->isNextToken(Lexer::T_INPUT_PARAMETER)) {
$this->match(Lexer::T_INPUT_PARAMETER);
return new AST\InputParameter($this->_lexer->token['value']);
}
return $this->SimpleArithmeticExpression();
}
/**
* IdentificationVariableDeclaration ::= RangeVariableDeclaration [IndexBy] {JoinVariableDeclaration}*
*/
......@@ -1029,6 +1227,38 @@ class Parser
);
}
/**
* SubselectIdentificationVariableDeclaration ::= IdentificationVariableDeclaration | (AssociationPathExpression ["AS"] AliasIdentificationVariable)
*/
public function SubselectIdentificationVariableDeclaration()
{
$peek = $this->_lexer->glimpse();
if ($peek['value'] == '.') {
$subselectIdentificationVarDecl = new AST\SubselectIdentificationVariableDeclaration;
$subselectIdentificationVarDecl->setAssociationPathExpression($this->AssociationPathExpression());
$this->match(Lexer::T_AS);
$this->match(Lexer::T_IDENTIFIER);
$subselectIdentificationVarDecl->setAliasIdentificationVariable($this->_lexer->token['value']);
return $subselectIdentificationVarDecl;
}
return $this->IdentificationVariableDeclaration();
}
/**
* JoinVariableDeclaration ::= Join [IndexBy]
*/
public function JoinVariableDeclaration()
{
$join = $this->Join();
$indexBy = $this->_lexer->isNextToken(Lexer::T_INDEX)
? $this->IndexBy() : null;
return new AST\JoinVariableDeclaration($join, $indexBy);
}
/**
* RangeVariableDeclaration ::= AbstractSchemaName ["AS"] AliasIdentificationVariable
*/
......@@ -1057,18 +1287,6 @@ class Parser
);
}
/**
* JoinVariableDeclaration ::= Join [IndexBy]
*/
public function JoinVariableDeclaration()
{
$join = $this->Join();
$indexBy = $this->_lexer->isNextToken(Lexer::T_INDEX)
? $this->IndexBy() : null;
return new AST\JoinVariableDeclaration($join, $indexBy);
}
/**
* Join ::= ["LEFT" ["OUTER"] | "INNER"] "JOIN" JoinPathExpression
* ["AS"] AliasIdentificationVariable [("ON" | "WITH") ConditionalExpression]
......@@ -1156,205 +1374,89 @@ class Parser
return $pathExp;
}
/**
* EntityExpression ::= SingleValuedAssociationPathExpression | SimpleEntityExpression
*/
public function EntityExpression()
{
$glimpse = $this->_lexer->glimpse();
if ($this->_lexer->isNextToken(Lexer::T_IDENTIFIER) && $glimpse['value'] === '.') {
return $this->SingleValuedAssociationPathExpression();
}
return $this->SimpleEntityExpression();
}
/**
* SimpleEntityExpression ::= IdentificationVariable | InputParameter
*/
public function SimpleEntityExpression()
{
if ($this->_lexer->isNextToken(Lexer::T_INPUT_PARAMETER)) {
$this->match(Lexer::T_INPUT_PARAMETER);
return new AST\InputParameter($this->_lexer->token['value']);
}
return $this->IdentificationVariable();
}
/**
* NullComparisonExpression ::= (SingleValuedPathExpression | InputParameter) "IS" ["NOT"] "NULL"
*/
public function NullComparisonExpression()
{
if ($this->_lexer->isNextToken(Lexer::T_INPUT_PARAMETER)) {
$this->match(Lexer::T_INPUT_PARAMETER);
$expr = new AST\InputParameter($this->_lexer->token['value']);
} else {
$expr = $this->SingleValuedPathExpression();
}
$nullCompExpr = new AST\NullComparisonExpression($expr);
$this->match(Lexer::T_IS);
if ($this->_lexer->isNextToken(Lexer::T_NOT)) {
$this->match(Lexer::T_NOT);
$nullCompExpr->setNot(true);
}
$this->match(Lexer::T_NULL);
return $nullCompExpr;
}
/**
* AggregateExpression ::=
* ("AVG" | "MAX" | "MIN" | "SUM") "(" ["DISTINCT"] StateFieldPathExpression ")" |
* "COUNT" "(" ["DISTINCT"] (IdentificationVariable | SingleValuedPathExpression) ")"
* SelectExpression ::=
* IdentificationVariable | StateFieldPathExpression |
* (AggregateExpression | "(" Subselect ")" | FunctionDeclaration) [["AS"] ResultVariable]
*/
public function AggregateExpression()
public function SelectExpression()
{
$isDistinct = false;
$functionName = '';
if ($this->_lexer->isNextToken(Lexer::T_COUNT)) {
$this->match(Lexer::T_COUNT);
$functionName = $this->_lexer->token['value'];
$this->match('(');
if ($this->_lexer->isNextToken(Lexer::T_DISTINCT)) {
$this->match(Lexer::T_DISTINCT);
$isDistinct = true;
}
$expression = null;
$fieldAliasIdentificationVariable = null;
$peek = $this->_lexer->glimpse();
$pathExp = $this->SingleValuedPathExpression();
$this->match(')');
} else {
if ($this->_lexer->isNextToken(Lexer::T_AVG)) {
$this->match(Lexer::T_AVG);
} else if ($this->_lexer->isNextToken(Lexer::T_MAX)) {
$this->match(Lexer::T_MAX);
} else if ($this->_lexer->isNextToken(Lexer::T_MIN)) {
$this->match(Lexer::T_MIN);
} else if ($this->_lexer->isNextToken(Lexer::T_SUM)) {
$this->match(Lexer::T_SUM);
// First we recognize for an IdentificationVariable (DQL class alias)
if ($peek['value'] != '.' && $peek['value'] != '(' && $this->_lexer->lookahead['type'] === Lexer::T_IDENTIFIER) {
$expression = $this->IdentificationVariable();
} else if (($isFunction = $this->_isFunction()) !== false || $this->_isSubselect()) {
if ($isFunction) {
if ($this->_isAggregateFunction($this->_lexer->lookahead['type'])) {
$expression = $this->AggregateExpression();
} else {
$expression = $this->FunctionDeclaration();
}
} else {
$this->syntaxError('One of: MAX, MIN, AVG, SUM, COUNT');
$this->match('(');
$expression = $this->Subselect();
$this->match(')');
}
$functionName = $this->_lexer->token['value'];
$this->match('(');
$pathExp = $this->StateFieldPathExpression();
$this->match(')');
}
return new AST\AggregateExpression($functionName, $pathExp, $isDistinct);
}
/**
* GroupByClause ::= "GROUP" "BY" GroupByItem {"," GroupByItem}*
*/
public function GroupByClause()
{
$this->match(Lexer::T_GROUP);
$this->match(Lexer::T_BY);
$groupByItems = array($this->GroupByItem());
while ($this->_lexer->isNextToken(',')) {
$this->match(',');
$groupByItems[] = $this->GroupByItem();
}
return new AST\GroupByClause($groupByItems);
}
/**
* GroupByItem ::= IdentificationVariable | SingleValuedPathExpression
*
* @todo Finish this implementation
*/
public function GroupByItem()
{
return $this->SingleValuedPathExpression();
}
/**
* HavingClause ::= "HAVING" ConditionalExpression
*/
public function HavingClause()
{
$this->match(Lexer::T_HAVING);
return new AST\HavingClause($this->ConditionalExpression());
}
/**
* OrderByClause ::= "ORDER" "BY" OrderByItem {"," OrderByItem}*
*/
public function OrderByClause()
{
$this->match(Lexer::T_ORDER);
$this->match(Lexer::T_BY);
if ($this->_lexer->isNextToken(Lexer::T_AS)) {
$this->match(Lexer::T_AS);
}
$orderByItems = array();
$orderByItems[] = $this->OrderByItem();
if ($this->_lexer->isNextToken(Lexer::T_IDENTIFIER)) {
$fieldAliasIdentificationVariable = $this->ResultVariable();
}
} else {
// Deny hydration of partial objects if doctrine.forcePartialLoad query hint not defined
if (
$this->_query->getHydrationMode() == Query::HYDRATE_OBJECT &&
! $this->_em->getConfiguration()->getAllowPartialObjects() &&
! $this->_query->getHint('doctrine.forcePartialLoad')
) {
throw DoctrineException::partialObjectsAreDangerous();
}
while ($this->_lexer->isNextToken(',')) {
$this->match(',');
$orderByItems[] = $this->OrderByItem();
$expression = $this->StateFieldPathExpression();
}
return new AST\OrderByClause($orderByItems);
return new AST\SelectExpression($expression, $fieldAliasIdentificationVariable);
}
/**
* OrderByItem ::= (ResultVariable | StateFieldPathExpression) ["ASC" | "DESC"]
*
* @todo Support general SingleValuedPathExpression instead of only StateFieldPathExpression.
* SimpleSelectExpression ::= StateFieldPathExpression | IdentificationVariable | (AggregateExpression [["AS"] ResultVariable])
*/
public function OrderByItem()
public function SimpleSelectExpression()
{
// We need to check if we are in a ResultVariable or StateFieldPathExpression
$glimpse = $this->_lexer->glimpse();
if ($glimpse['value'] != '.') {
$expr = $this->ResultVariable();
// @todo Check if ResultVariable is defined somewhere
if ($this->_lexer->isNextToken(Lexer::T_IDENTIFIER)) {
// SingleValuedPathExpression | IdentificationVariable
$peek = $this->_lexer->glimpse();
if ($peek['value'] == '.') {
return new AST\SimpleSelectExpression($this->StateFieldPathExpression());
}
$this->match($this->_lexer->lookahead['value']);
return new AST\SimpleSelectExpression($this->_lexer->token['value']);
} else {
$expr = $this->StateFieldPathExpression();
}
$item = new AST\OrderByItem($expr);
$expr = new AST\SimpleSelectExpression($this->AggregateExpression());
if ($this->_lexer->isNextToken(Lexer::T_ASC)) {
$this->match(Lexer::T_ASC);
$item->setAsc(true);
return $item;
}
if ($this->_lexer->isNextToken(Lexer::T_DESC)) {
$this->match(Lexer::T_DESC);
}
$item->setDesc(true);
return $item;
}
if ($this->_lexer->isNextToken(Lexer::T_AS)) {
$this->match(Lexer::T_AS);
}
/**
* WhereClause ::= "WHERE" ConditionalExpression
*/
public function WhereClause()
{
$this->match(Lexer::T_WHERE);
if ($this->_lexer->isNextToken(Lexer::T_IDENTIFIER)) {
$expr->setFieldIdentificationVariable($this->ResultVariable());
}
return new AST\WhereClause($this->ConditionalExpression());
return $expr;
}
}
/**
* ConditionalExpression ::= ConditionalTerm {"OR" ConditionalTerm}*
*/
......@@ -1450,6 +1552,8 @@ class Parser
* ComparisonExpression | BetweenExpression | LikeExpression |
* InExpression | NullComparisonExpression | ExistsExpression |
* EmptyCollectionComparisonExpression | CollectionMemberExpression
*
* @todo Missing EmptyCollectionComparisonExpression implementation
*/
public function SimpleConditionalExpression()
{
......@@ -1512,6 +1616,7 @@ class Parser
}
}
/**
* CollectionMemberExpression ::= EntityExpression ["NOT"] "MEMBER" ["OF"] CollectionValuedPathExpression
*
......@@ -1542,99 +1647,33 @@ class Parser
);
}
/**
* ComparisonExpression ::= ArithmeticExpression ComparisonOperator ( QuantifiedExpression | ArithmeticExpression )
* Literal ::= string | char | integer | float | boolean | InputParameter
*
* @return AST\ComparisonExpression
* @todo Semantical checks whether $leftExpr $operator and $rightExpr are compatible.
* @todo Rip out InputParameter. Thats not a literal.
*/
public function ComparisonExpression()
public function Literal()
{
$peek = $this->_lexer->glimpse();
$leftExpr = $this->ArithmeticExpression();
$operator = $this->ComparisonOperator();
if ($this->_isNextAllAnySome()) {
$rightExpr = $this->QuantifiedExpression();
} else {
$rightExpr = $this->ArithmeticExpression();
}
switch ($this->_lexer->lookahead['type']) {
case Lexer::T_INPUT_PARAMETER:
$this->match($this->_lexer->lookahead['value']);
return new AST\ComparisonExpression($leftExpr, $operator, $rightExpr);
}
return new AST\InputParameter($this->_lexer->token['value']);
/**
* Checks whether the current lookahead token of the lexer has the type
* T_ALL, T_ANY or T_SOME.
*
* @return boolean
*/
private function _isNextAllAnySome()
{
return $this->_lexer->lookahead['type'] === Lexer::T_ALL ||
$this->_lexer->lookahead['type'] === Lexer::T_ANY ||
$this->_lexer->lookahead['type'] === Lexer::T_SOME;
}
case Lexer::T_STRING:
case Lexer::T_INTEGER:
case Lexer::T_FLOAT:
$this->match($this->_lexer->lookahead['value']);
/**
* Function ::= FunctionsReturningStrings | FunctionsReturningNumerics | FunctionsReturningDatetime
*/
public function _Function()
{
$funcName = $this->_lexer->lookahead['value'];
return $this->_lexer->token['value'];
if ($this->isStringFunction($funcName)) {
return $this->FunctionsReturningStrings();
} else if ($this->isNumericFunction($funcName)) {
return $this->FunctionsReturningNumerics();
} else if ($this->isDatetimeFunction($funcName)) {
return $this->FunctionsReturningDatetime();
default:
$this->syntaxError('Literal');
}
$this->syntaxError('Known function.');
}
/**
* Checks whether the function with the given name is a string function
* (a function that returns strings).
*/
public function isStringFunction($funcName)
{
return isset(self::$_STRING_FUNCTIONS[strtolower($funcName)]);
}
/**
* Checks whether the function with the given name is a numeric function
* (a function that returns numerics).
*/
public function isNumericFunction($funcName)
{
return isset(self::$_NUMERIC_FUNCTIONS[strtolower($funcName)]);
}
/**
* Checks whether the function with the given name is a datetime function
* (a function that returns date/time values).
*/
public function isDatetimeFunction($funcName)
{
return isset(self::$_DATETIME_FUNCTIONS[strtolower($funcName)]);
}
/**
* Checks whether the given token is a comparison operator.
*/
public function isComparisonOperator($token)
{
$value = $token['value'];
return $value == '=' || $value == '<' ||
$value == '<=' || $value == '<>' ||
$value == '>' || $value == '>=' ||
$value == '!=';
}
/**
* ArithmeticExpression ::= SimpleArithmeticExpression | "(" Subselect ")"
*/
......@@ -1722,229 +1761,214 @@ class Parser
}
/**
* InExpression ::= StateFieldPathExpression ["NOT"] "IN" "(" (Literal {"," Literal}* | Subselect) ")"
* ArithmeticPrimary ::= SingleValuedPathExpression | Literal | "(" SimpleArithmeticExpression ")"
* | FunctionsReturningNumerics | AggregateExpression | FunctionsReturningStrings
* | FunctionsReturningDatetime | IdentificationVariable
*/
public function InExpression()
public function ArithmeticPrimary()
{
$inExpression = new AST\InExpression($this->StateFieldPathExpression());
if ($this->_lexer->isNextToken(Lexer::T_NOT)) {
$this->match(Lexer::T_NOT);
$inExpression->setNot(true);
}
$this->match(Lexer::T_IN);
$this->match('(');
if ($this->_lexer->isNextToken(Lexer::T_SELECT)) {
$inExpression->setSubselect($this->Subselect());
} else {
$literals = array();
$literals[] = $this->Literal();
while ($this->_lexer->isNextToken(',')) {
$this->match(',');
$literals[] = $this->Literal();
}
if ($this->_lexer->lookahead['value'] === '(') {
$this->match('(');
$expr = $this->SimpleArithmeticExpression();
$this->match(')');
$inExpression->setLiterals($literals);
return $expr;
}
$this->match(')');
switch ($this->_lexer->lookahead['type']) {
case Lexer::T_IDENTIFIER:
$peek = $this->_lexer->glimpse();
return $inExpression;
}
if ($peek['value'] == '(') {
return $this->FunctionDeclaration();
}
/**
* ExistsExpression ::= ["NOT"] "EXISTS" "(" Subselect ")"
*/
public function ExistsExpression()
{
$not = false;
if ($peek['value'] == '.') {
return $this->SingleValuedPathExpression();
}
if ($this->_lexer->isNextToken(Lexer::T_NOT)) {
$this->match(Lexer::T_NOT);
$not = true;
}
return $this->IdentificationVariable();
$this->match(Lexer::T_EXISTS);
$this->match('(');
$existsExpression = new AST\ExistsExpression($this->Subselect());
$this->match(')');
$existsExpression->setNot($not);
case Lexer::T_INPUT_PARAMETER:
$this->match($this->_lexer->lookahead['value']);
return $existsExpression;
}
return new AST\InputParameter($this->_lexer->token['value']);
/**
* QuantifiedExpression ::= ("ALL" | "ANY" | "SOME") "(" Subselect ")"
*/
public function QuantifiedExpression()
{
$all = $any = $some = false;
case Lexer::T_STRING:
case Lexer::T_INTEGER:
case Lexer::T_FLOAT:
$this->match($this->_lexer->lookahead['value']);
if ($this->_lexer->isNextToken(Lexer::T_ALL)) {
$this->match(Lexer::T_ALL);
$all = true;
} else if ($this->_lexer->isNextToken(Lexer::T_ANY)) {
$this->match(Lexer::T_ANY);
$any = true;
} else if ($this->_lexer->isNextToken(Lexer::T_SOME)) {
$this->match(Lexer::T_SOME);
$some = true;
} else {
$this->syntaxError('ALL, ANY or SOME');
}
return $this->_lexer->token['value'];
$this->match('(');
$qExpr = new AST\QuantifiedExpression($this->Subselect());
$this->match(')');
default:
$peek = $this->_lexer->glimpse();
$qExpr->setAll($all);
$qExpr->setAny($any);
$qExpr->setSome($some);
if ($peek['value'] == '(') {
if ($this->_isAggregateFunction($this->_lexer->lookahead['type'])) {
return $this->AggregateExpression();
}
return $qExpr;
return $this->FunctionsReturningStrings();
} else {
$this->syntaxError();
}
}
}
/**
* Subselect ::= SimpleSelectClause SubselectFromClause [WhereClause] [GroupByClause] [HavingClause] [OrderByClause]
* StringExpression ::= StringPrimary | "(" Subselect ")"
*/
public function Subselect()
public function StringExpression()
{
$this->_beginDeferredPathExpressionStack();
$subselect = new AST\Subselect($this->SimpleSelectClause(), $this->SubselectFromClause());
$this->_processDeferredPathExpressionStack();
$subselect->setWhereClause(
$this->_lexer->isNextToken(Lexer::T_WHERE) ? $this->WhereClause() : null
);
$subselect->setGroupByClause(
$this->_lexer->isNextToken(Lexer::T_GROUP) ? $this->GroupByClause() : null
);
if ($this->_lexer->lookahead['value'] === '(') {
$peek = $this->_lexer->glimpse();
$subselect->setHavingClause(
$this->_lexer->isNextToken(Lexer::T_HAVING) ? $this->HavingClause() : null
);
if ($peek['type'] === Lexer::T_SELECT) {
$this->match('(');
$expr = $this->Subselect();
$this->match(')');
$subselect->setOrderByClause(
$this->_lexer->isNextToken(Lexer::T_ORDER) ? $this->OrderByClause() : null
);
return $expr;
}
}
return $subselect;
return $this->StringPrimary();
}
/**
* SimpleSelectClause ::= "SELECT" ["DISTINCT"] SimpleSelectExpression
* StringPrimary ::= StateFieldPathExpression | string | InputParameter | FunctionsReturningStrings | AggregateExpression
*/
public function SimpleSelectClause()
public function StringPrimary()
{
$distinct = false;
$this->match(Lexer::T_SELECT);
if ($this->_lexer->lookahead['type'] === Lexer::T_IDENTIFIER) {
$peek = $this->_lexer->glimpse();
if ($this->_lexer->isNextToken(Lexer::T_DISTINCT)) {
$this->match(Lexer::T_DISTINCT);
$distinct = true;
}
if ($peek['value'] == '.') {
return $this->StateFieldPathExpression();
} else if ($peek['value'] == '(') {
return $this->FunctionsReturningStrings();
} else {
$this->syntaxError("'.' or '('");
}
} else if ($this->_lexer->lookahead['type'] === Lexer::T_STRING) {
$this->match(Lexer::T_STRING);
$simpleSelectClause = new AST\SimpleSelectClause($this->SimpleSelectExpression());
$simpleSelectClause->setDistinct($distinct);
return $this->_lexer->token['value'];
} else if ($this->_lexer->lookahead['type'] === Lexer::T_INPUT_PARAMETER) {
$this->match(Lexer::T_INPUT_PARAMETER);
return $simpleSelectClause;
return new AST\InputParameter($this->_lexer->token['value']);
} else if ($this->_isAggregateFunction($this->_lexer->lookahead['type'])) {
return $this->AggregateExpression();
}
$this->syntaxError('StateFieldPathExpression | string | InputParameter | FunctionsReturningStrings | AggregateExpression');
}
/**
* SubselectFromClause ::= "FROM" SubselectIdentificationVariableDeclaration {"," SubselectIdentificationVariableDeclaration}*
* EntityExpression ::= SingleValuedAssociationPathExpression | SimpleEntityExpression
*/
public function SubselectFromClause()
public function EntityExpression()
{
$this->match(Lexer::T_FROM);
$identificationVariables = array();
$identificationVariables[] = $this->SubselectIdentificationVariableDeclaration();
while ($this->_lexer->isNextToken(',')) {
$this->match(',');
$identificationVariables[] = $this->SubselectIdentificationVariableDeclaration();
$glimpse = $this->_lexer->glimpse();
if ($this->_lexer->isNextToken(Lexer::T_IDENTIFIER) && $glimpse['value'] === '.') {
return $this->SingleValuedAssociationPathExpression();
}
return new AST\SubselectFromClause($identificationVariables);
return $this->SimpleEntityExpression();
}
/**
* SubselectIdentificationVariableDeclaration ::= IdentificationVariableDeclaration | (AssociationPathExpression ["AS"] AliasIdentificationVariable)
* SimpleEntityExpression ::= IdentificationVariable | InputParameter
*/
public function SubselectIdentificationVariableDeclaration()
public function SimpleEntityExpression()
{
$peek = $this->_lexer->glimpse();
if ($peek['value'] == '.') {
$subselectIdentificationVarDecl = new AST\SubselectIdentificationVariableDeclaration;
$subselectIdentificationVarDecl->setAssociationPathExpression($this->AssociationPathExpression());
$this->match(Lexer::T_AS);
$this->match(Lexer::T_IDENTIFIER);
$subselectIdentificationVarDecl->setAliasIdentificationVariable($this->_lexer->token['value']);
return $subselectIdentificationVarDecl;
if ($this->_lexer->isNextToken(Lexer::T_INPUT_PARAMETER)) {
$this->match(Lexer::T_INPUT_PARAMETER);
return new AST\InputParameter($this->_lexer->token['value']);
}
return $this->IdentificationVariableDeclaration();
return $this->IdentificationVariable();
}
/**
* SimpleSelectExpression ::= StateFieldPathExpression | IdentificationVariable | (AggregateExpression [["AS"] ResultVariable])
* AggregateExpression ::=
* ("AVG" | "MAX" | "MIN" | "SUM") "(" ["DISTINCT"] StateFieldPathExpression ")" |
* "COUNT" "(" ["DISTINCT"] (IdentificationVariable | SingleValuedPathExpression) ")"
*/
public function SimpleSelectExpression()
public function AggregateExpression()
{
if ($this->_lexer->isNextToken(Lexer::T_IDENTIFIER)) {
// SingleValuedPathExpression | IdentificationVariable
$peek = $this->_lexer->glimpse();
if ($peek['value'] == '.') {
return new AST\SimpleSelectExpression($this->StateFieldPathExpression());
}
$this->match($this->_lexer->lookahead['value']);
$isDistinct = false;
$functionName = '';
return new AST\SimpleSelectExpression($this->_lexer->token['value']);
} else {
$expr = new AST\SimpleSelectExpression($this->AggregateExpression());
if ($this->_lexer->isNextToken(Lexer::T_COUNT)) {
$this->match(Lexer::T_COUNT);
$functionName = $this->_lexer->token['value'];
$this->match('(');
if ($this->_lexer->isNextToken(Lexer::T_AS)) {
$this->match(Lexer::T_AS);
if ($this->_lexer->isNextToken(Lexer::T_DISTINCT)) {
$this->match(Lexer::T_DISTINCT);
$isDistinct = true;
}
if ($this->_lexer->isNextToken(Lexer::T_IDENTIFIER)) {
$expr->setFieldIdentificationVariable($this->ResultVariable());
$pathExp = $this->SingleValuedPathExpression();
$this->match(')');
} else {
if ($this->_lexer->isNextToken(Lexer::T_AVG)) {
$this->match(Lexer::T_AVG);
} else if ($this->_lexer->isNextToken(Lexer::T_MAX)) {
$this->match(Lexer::T_MAX);
} else if ($this->_lexer->isNextToken(Lexer::T_MIN)) {
$this->match(Lexer::T_MIN);
} else if ($this->_lexer->isNextToken(Lexer::T_SUM)) {
$this->match(Lexer::T_SUM);
} else {
$this->syntaxError('One of: MAX, MIN, AVG, SUM, COUNT');
}
return $expr;
$functionName = $this->_lexer->token['value'];
$this->match('(');
$pathExp = $this->StateFieldPathExpression();
$this->match(')');
}
return new AST\AggregateExpression($functionName, $pathExp, $isDistinct);
}
/**
* Literal ::= string | char | integer | float | boolean | InputParameter
*
* @todo Rip out InputParameter. Thats not a literal.
* QuantifiedExpression ::= ("ALL" | "ANY" | "SOME") "(" Subselect ")"
*/
public function Literal()
public function QuantifiedExpression()
{
switch ($this->_lexer->lookahead['type']) {
case Lexer::T_INPUT_PARAMETER:
$this->match($this->_lexer->lookahead['value']);
$all = $any = $some = false;
return new AST\InputParameter($this->_lexer->token['value']);
if ($this->_lexer->isNextToken(Lexer::T_ALL)) {
$this->match(Lexer::T_ALL);
$all = true;
} else if ($this->_lexer->isNextToken(Lexer::T_ANY)) {
$this->match(Lexer::T_ANY);
$any = true;
} else if ($this->_lexer->isNextToken(Lexer::T_SOME)) {
$this->match(Lexer::T_SOME);
$some = true;
} else {
$this->syntaxError('ALL, ANY or SOME');
}
case Lexer::T_STRING:
case Lexer::T_INTEGER:
case Lexer::T_FLOAT:
$this->match($this->_lexer->lookahead['value']);
$this->match('(');
$qExpr = new AST\QuantifiedExpression($this->Subselect());
$this->match(')');
return $this->_lexer->token['value'];
$qExpr->setAll($all);
$qExpr->setAny($any);
$qExpr->setSome($some);
default:
$this->syntaxError('Literal');
}
return $qExpr;
}
/**
......@@ -1972,109 +1996,139 @@ class Parser
}
/**
* ArithmeticPrimary ::= SingleValuedPathExpression | Literal | "(" SimpleArithmeticExpression ")"
* | FunctionsReturningNumerics | AggregateExpression | FunctionsReturningStrings
* | FunctionsReturningDatetime | IdentificationVariable
* ComparisonExpression ::= ArithmeticExpression ComparisonOperator ( QuantifiedExpression | ArithmeticExpression )
*
* @return AST\ComparisonExpression
* @todo Semantical checks whether $leftExpr $operator and $rightExpr are compatible.
*/
public function ArithmeticPrimary()
public function ComparisonExpression()
{
if ($this->_lexer->lookahead['value'] === '(') {
$this->match('(');
$expr = $this->SimpleArithmeticExpression();
$this->match(')');
$peek = $this->_lexer->glimpse();
return $expr;
$leftExpr = $this->ArithmeticExpression();
$operator = $this->ComparisonOperator();
if ($this->_isNextAllAnySome()) {
$rightExpr = $this->QuantifiedExpression();
} else {
$rightExpr = $this->ArithmeticExpression();
}
switch ($this->_lexer->lookahead['type']) {
case Lexer::T_IDENTIFIER:
$peek = $this->_lexer->glimpse();
return new AST\ComparisonExpression($leftExpr, $operator, $rightExpr);
}
if ($peek['value'] == '(') {
return $this->_Function();
}
/**
* InExpression ::= StateFieldPathExpression ["NOT"] "IN" "(" (Literal {"," Literal}* | Subselect) ")"
*/
public function InExpression()
{
$inExpression = new AST\InExpression($this->StateFieldPathExpression());
if ($this->_lexer->isNextToken(Lexer::T_NOT)) {
$this->match(Lexer::T_NOT);
$inExpression->setNot(true);
}
$this->match(Lexer::T_IN);
$this->match('(');
if ($this->_lexer->isNextToken(Lexer::T_SELECT)) {
$inExpression->setSubselect($this->Subselect());
} else {
$literals = array();
$literals[] = $this->Literal();
while ($this->_lexer->isNextToken(',')) {
$this->match(',');
$literals[] = $this->Literal();
}
if ($peek['value'] == '.') {
return $this->SingleValuedPathExpression();
}
$inExpression->setLiterals($literals);
}
return $this->IdentificationVariable();
$this->match(')');
case Lexer::T_INPUT_PARAMETER:
$this->match($this->_lexer->lookahead['value']);
return $inExpression;
}
return new AST\InputParameter($this->_lexer->token['value']);
/**
* LikeExpression ::= StringExpression ["NOT"] "LIKE" (string | input_parameter) ["ESCAPE" char]
*/
public function LikeExpression()
{
$stringExpr = $this->StringExpression();
$isNot = false;
case Lexer::T_STRING:
case Lexer::T_INTEGER:
case Lexer::T_FLOAT:
$this->match($this->_lexer->lookahead['value']);
if ($this->_lexer->lookahead['type'] === Lexer::T_NOT) {
$this->match(Lexer::T_NOT);
$isNot = true;
}
return $this->_lexer->token['value'];
$this->match(Lexer::T_LIKE);
default:
$peek = $this->_lexer->glimpse();
if ($this->_lexer->isNextToken(Lexer::T_INPUT_PARAMETER)) {
$this->match(Lexer::T_INPUT_PARAMETER);
$stringPattern = new AST\InputParameter($this->_lexer->token['value']);
} else {
$this->match(Lexer::T_STRING);
$stringPattern = $this->_lexer->token['value'];
}
if ($peek['value'] == '(') {
if ($this->_isAggregateFunction($this->_lexer->lookahead['type'])) {
return $this->AggregateExpression();
}
$escapeChar = null;
return $this->FunctionsReturningStrings();
} else {
$this->syntaxError();
}
if ($this->_lexer->lookahead['type'] === Lexer::T_ESCAPE) {
$this->match(Lexer::T_ESCAPE);
$this->match(Lexer::T_STRING);
$escapeChar = $this->_lexer->token['value'];
}
return new AST\LikeExpression($stringExpr, $stringPattern, $isNot, $escapeChar);
}
/**
* FunctionsReturningStrings ::=
* "CONCAT" "(" StringPrimary "," StringPrimary ")" |
* "SUBSTRING" "(" StringPrimary "," SimpleArithmeticExpression "," SimpleArithmeticExpression ")" |
* "TRIM" "(" [["LEADING" | "TRAILING" | "BOTH"] [char] "FROM"] StringPrimary ")" |
* "LOWER" "(" StringPrimary ")" |
* "UPPER" "(" StringPrimary ")"
* NullComparisonExpression ::= (SingleValuedPathExpression | InputParameter) "IS" ["NOT"] "NULL"
*/
public function FunctionsReturningStrings()
public function NullComparisonExpression()
{
$funcNameLower = strtolower($this->_lexer->lookahead['value']);
$funcClass = self::$_STRING_FUNCTIONS[$funcNameLower];
$function = new $funcClass($funcNameLower);
$function->parse($this);
if ($this->_lexer->isNextToken(Lexer::T_INPUT_PARAMETER)) {
$this->match(Lexer::T_INPUT_PARAMETER);
$expr = new AST\InputParameter($this->_lexer->token['value']);
} else {
$expr = $this->SingleValuedPathExpression();
}
return $function;
}
$nullCompExpr = new AST\NullComparisonExpression($expr);
$this->match(Lexer::T_IS);
/**
* FunctionsReturningNumerics ::=
* "LENGTH" "(" StringPrimary ")" |
* "LOCATE" "(" StringPrimary "," StringPrimary ["," SimpleArithmeticExpression]")" |
* "ABS" "(" SimpleArithmeticExpression ")" |
* "SQRT" "(" SimpleArithmeticExpression ")" |
* "MOD" "(" SimpleArithmeticExpression "," SimpleArithmeticExpression ")" |
* "SIZE" "(" CollectionValuedPathExpression ")"
*/
public function FunctionsReturningNumerics()
{
$funcNameLower = strtolower($this->_lexer->lookahead['value']);
$funcClass = self::$_NUMERIC_FUNCTIONS[$funcNameLower];
$function = new $funcClass($funcNameLower);
$function->parse($this);
if ($this->_lexer->isNextToken(Lexer::T_NOT)) {
$this->match(Lexer::T_NOT);
$nullCompExpr->setNot(true);
}
return $function;
$this->match(Lexer::T_NULL);
return $nullCompExpr;
}
/**
* FunctionsReturningDateTime ::= "CURRENT_DATE" | "CURRENT_TIME" | "CURRENT_TIMESTAMP"
* ExistsExpression ::= ["NOT"] "EXISTS" "(" Subselect ")"
*/
public function FunctionsReturningDatetime()
public function ExistsExpression()
{
$funcNameLower = strtolower($this->_lexer->lookahead['value']);
$funcClass = self::$_DATETIME_FUNCTIONS[$funcNameLower];
$function = new $funcClass($funcNameLower);
$function->parse($this);
$not = false;
return $function;
if ($this->_lexer->isNextToken(Lexer::T_NOT)) {
$this->match(Lexer::T_NOT);
$not = true;
}
$this->match(Lexer::T_EXISTS);
$this->match('(');
$existsExpression = new AST\ExistsExpression($this->Subselect());
$this->match(')');
$existsExpression->setNot($not);
return $existsExpression;
}
/**
......@@ -2124,120 +2178,72 @@ class Parser
}
}
/**
* LikeExpression ::= StringExpression ["NOT"] "LIKE" (string | input_parameter) ["ESCAPE" char]
* FunctionDeclaration ::= FunctionsReturningStrings | FunctionsReturningNumerics | FunctionsReturningDatetime
*/
public function LikeExpression()
public function FunctionDeclaration()
{
$stringExpr = $this->StringExpression();
$isNot = false;
if ($this->_lexer->lookahead['type'] === Lexer::T_NOT) {
$this->match(Lexer::T_NOT);
$isNot = true;
}
$this->match(Lexer::T_LIKE);
if ($this->_lexer->isNextToken(Lexer::T_INPUT_PARAMETER)) {
$this->match(Lexer::T_INPUT_PARAMETER);
$stringPattern = new AST\InputParameter($this->_lexer->token['value']);
} else {
$this->match(Lexer::T_STRING);
$stringPattern = $this->_lexer->token['value'];
}
$escapeChar = null;
$funcName = $this->_lexer->lookahead['value'];
if ($this->_lexer->lookahead['type'] === Lexer::T_ESCAPE) {
$this->match(Lexer::T_ESCAPE);
$this->match(Lexer::T_STRING);
$escapeChar = $this->_lexer->token['value'];
if ($this->_isStringFunction($funcName)) {
return $this->FunctionsReturningStrings();
} else if ($this->_isNumericFunction($funcName)) {
return $this->FunctionsReturningNumerics();
} else if ($this->_isDatetimeFunction($funcName)) {
return $this->FunctionsReturningDatetime();
}
return new AST\LikeExpression($stringExpr, $stringPattern, $isNot, $escapeChar);
$this->syntaxError('Known function.');
}
/**
* StringExpression ::= StringPrimary | "(" Subselect ")"
* FunctionsReturningNumerics ::=
* "LENGTH" "(" StringPrimary ")" |
* "LOCATE" "(" StringPrimary "," StringPrimary ["," SimpleArithmeticExpression]")" |
* "ABS" "(" SimpleArithmeticExpression ")" |
* "SQRT" "(" SimpleArithmeticExpression ")" |
* "MOD" "(" SimpleArithmeticExpression "," SimpleArithmeticExpression ")" |
* "SIZE" "(" CollectionValuedPathExpression ")"
*/
public function StringExpression()
public function FunctionsReturningNumerics()
{
if ($this->_lexer->lookahead['value'] === '(') {
$peek = $this->_lexer->glimpse();
if ($peek['type'] === Lexer::T_SELECT) {
$this->match('(');
$expr = $this->Subselect();
$this->match(')');
return $expr;
}
}
$funcNameLower = strtolower($this->_lexer->lookahead['value']);
$funcClass = self::$_NUMERIC_FUNCTIONS[$funcNameLower];
$function = new $funcClass($funcNameLower);
$function->parse($this);
return $this->StringPrimary();
return $function;
}
/**
* StringPrimary ::= StateFieldPathExpression | string | InputParameter | FunctionsReturningStrings | AggregateExpression
* FunctionsReturningDateTime ::= "CURRENT_DATE" | "CURRENT_TIME" | "CURRENT_TIMESTAMP"
*/
public function StringPrimary()
public function FunctionsReturningDatetime()
{
if ($this->_lexer->lookahead['type'] === Lexer::T_IDENTIFIER) {
$peek = $this->_lexer->glimpse();
if ($peek['value'] == '.') {
return $this->StateFieldPathExpression();
} else if ($peek['value'] == '(') {
return $this->FunctionsReturningStrings();
} else {
$this->syntaxError("'.' or '('");
}
} else if ($this->_lexer->lookahead['type'] === Lexer::T_STRING) {
$this->match(Lexer::T_STRING);
return $this->_lexer->token['value'];
} else if ($this->_lexer->lookahead['type'] === Lexer::T_INPUT_PARAMETER) {
$this->match(Lexer::T_INPUT_PARAMETER);
return new AST\InputParameter($this->_lexer->token['value']);
} else if ($this->_isAggregateFunction($this->_lexer->lookahead['type'])) {
return $this->AggregateExpression();
}
$this->syntaxError('StateFieldPathExpression | string | InputParameter | FunctionsReturningStrings | AggregateExpression');
}
$funcNameLower = strtolower($this->_lexer->lookahead['value']);
$funcClass = self::$_DATETIME_FUNCTIONS[$funcNameLower];
$function = new $funcClass($funcNameLower);
$function->parse($this);
/**
* Registers a custom function that returns strings.
*
* @param string $name The function name.
* @param string $class The class name of the function implementation.
*/
public static function registerStringFunction($name, $class)
{
self::$_STRING_FUNCTIONS[$name] = $class;
return $function;
}
/**
* Registers a custom function that returns numerics.
*
* @param string $name The function name.
* @param string $class The class name of the function implementation.
* FunctionsReturningStrings ::=
* "CONCAT" "(" StringPrimary "," StringPrimary ")" |
* "SUBSTRING" "(" StringPrimary "," SimpleArithmeticExpression "," SimpleArithmeticExpression ")" |
* "TRIM" "(" [["LEADING" | "TRAILING" | "BOTH"] [char] "FROM"] StringPrimary ")" |
* "LOWER" "(" StringPrimary ")" |
* "UPPER" "(" StringPrimary ")"
*/
public static function registerNumericFunction($name, $class)
public function FunctionsReturningStrings()
{
self::$_NUMERIC_FUNCTIONS[$name] = $class;
}
$funcNameLower = strtolower($this->_lexer->lookahead['value']);
$funcClass = self::$_STRING_FUNCTIONS[$funcNameLower];
$function = new $funcClass($funcNameLower);
$function->parse($this);
/**
* Registers a custom function that returns date/time values.
*
* @param string $name The function name.
* @param string $class The class name of the function implementation.
*/
public static function registerDatetimeFunction($name, $class)
{
self::$_DATETIME_FUNCTIONS[$name] = $class;
return $function;
}
}
tests/Doctrine/Tests/ORM/Query/LanguageRecognitionTest.php
View file @ 58a15786
......@@ -48,7 +48,7 @@ class LanguageRecognitionTest extends \Doctrine\Tests\OrmTestCase
$parser = new \Doctrine\ORM\Query\Parser($query);
// We do NOT test SQL construction here. That only unnecessarily slows down the tests!
$parser->setSqlTreeWalker(new \Doctrine\Tests\Mocks\MockTreeWalker);
$parser->setTreeWalker(new \Doctrine\Tests\Mocks\MockTreeWalker);
return $parser->parse();
}
......
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