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• SymbolTable

PHP Class Zephir\SymbolTable

A symbol table stores all the variables defined in a method, their data types and default values Afficher le fichier Open project: phalcon/zephir Class Usage Examples

Protected Properties

Свойство	Type	Description
$branchTempVariables
$branchVariables
$compilationContext
$localContext	Zephir\Passes\LocalContextPass
$mustGrownStack
$tempVarCount

Méthodes publiques

Méthode	Description
__construct ( zephir\CompilationContext $compilationContext )	SymbolTable
addRawVariable ( Variable $variable ) : Variable	Adds a raw variable to the symbol table (root branch)
addTemp ( string $type, zephir\CompilationContext $context ) : Variable	Creates a temporary variable
addVariable ( integer $type, string $name, zephir\CompilationContext $compilationContext, mixed $defaultValue = null ) : Variable	Adds a variable to the symbol table
getExpectedMutations ( string $variable ) : integer	Returns the number of expected mutations for a variable
getLastCallLine ( ) : integer	Returns the last line where any kind of call was performed within the method This is not necessary related to the symbol table but this information is gathered by the LocalContextPass
getLastUnsetLine ( ) : integer	Returns the last line where an 'unset' operation was made within the current method This is not necessary related to the symbol table but this information is gathered by the LocalContextPass
getMustGrownStack ( ) : boolean	Returns if the current symbol label must add a memory frame
getNextTempVar ( $compilationContext = null )
getTempComplexLiteralVariableForWrite ( string $type, zephir\CompilationContext $context ) : Variable	Creates a temporary variable to be used in a write operation the body of the variable is freed between iterations instead of request a new full zval variable
getTempLocalVariableForWrite ( string $type, zephir\CompilationContext $context ) : Variable	Creates a temporary variable to be used in a write operation
getTempNonTrackedUninitializedVariable ( string $type, zephir\CompilationContext $context ) : Variable	Creates a temporary variable to be used in a read-only operation within native-array-access and property-access These kind of variables MUST not be tracked by the Zephir memory manager
getTempNonTrackedVariable ( $type, zephir\CompilationContext $context, boolean $initNonReferenced = false ) : Variable	Creates a temporary variable to be used to point to a heap variable These kind of variables MUST not be tracked by the Zephir memory manager
getTempVariable ( string $type, zephir\CompilationContext $compilationContext ) : Variable	Returns a temporal variable
getTempVariableForObserve ( string $type, zephir\CompilationContext $context ) : Variable	Creates a temporary variable to be used as intermediate variable of a read operation Variables are automatically tracked by the memory manager
getTempVariableForObserveOrNullify ( string $type, zephir\CompilationContext $context ) : Variable	Creates a temporary variable to be used as intermediate variable in a call operation Variables are automatically tracked by the memory manager
getTempVariableForWrite ( string $type, zephir\CompilationContext $context, $init = true ) : Variable	Creates a temporary variable to be used in a write operation
getTemporalVariables ( ) : array	Returns the temporal variables declared in a given context
getVariable ( $name, $compilationContext = null ) : Variable | boolean	Returns a variable in the symbol table
getVariableForRead ( string $name, zephir\CompilationContext $compilationContext = null, array $statement = null ) : Variable	Return a variable in the symbol table, it will be used for a read operation
getVariableForUpdate ( string $name, zephir\CompilationContext $compilationContext, array $statement = null ) : Variable	Return a variable in the symbol table, it will be used for a mutating operation This method implies mutation of one of the members of the variable but no the variables it self
getVariableForWrite ( string $name, zephir\CompilationContext $compilationContext, array $statement = null ) : boolean | Variable	Return a variable in the symbol table, it will be used for a write operation Some variables aren't writable themselves but their members do
getVariables ( ) : array	Returns all the variables defined in the symbol table
getVariablesByBranch ( $branchId )
hasVariable ( string $name, $compilationContext = null ) : boolean	Check if a variable is declared in the current symbol table
hasVariableInBranch ( $name, $compareBranch, $compilationContext = null )
isSuperGlobal ( string $name ) : boolean	Checks if a variable is a superglobal
markTemporalVariablesIdle ( zephir\CompilationContext $compilationContext )	Traverses temporal variables created in a specific branch marking them as idle
mustGrownStack ( boolean $mustGrownStack )	Return a variable in the symbol table, it will be used for a write operation
resolveVariableToBranch ( $name, $compilationContext )
setLocalContext ( LocalContextPass $localContext )	Sets the local context information

Méthodes protégées

Méthode	Description
registerTempVariable ( string $type, string $location, Variable $variable, $compilationContext = null )	Register a variable as temporal
reuseTempVariable ( string $type, string $location, $compilationContext = null ) : Variable	Reuse variables marked as idle after leave a branch

Method Details

Property Details