Increase the number of mutations a variable may have
| public increaseMutates ( ) |
/**
* 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
*
* @param string $name
* @param CompilationContext $compilationContext
* @param array $statement
* @return Variable
*/
public function getVariableForUpdate($name, CompilationContext $compilationContext, array $statement = null)
{
/**
* Create superglobals just in time
*/
if ($this->isSuperGlobal($name)) {
if (!$this->hasVariable($name)) {
/**
* @TODO, injecting globals, initialize to null and check first?
*/
$superVar = new Variable('variable', $name, $compilationContext->currentBranch);
$superVar->setIsInitialized(true, $compilationContext, $statement);
$superVar->setDynamicTypes('array');
$superVar->increaseMutates();
$superVar->increaseUses();
$superVar->setIsExternal(true);
$superVar->setUsed(true, $statement);
$this->variables[$name] = $superVar;
return $superVar;
}
}
if (!$this->hasVariable($name)) {
throw new CompilerException("Cannot mutate variable '" . $name . "' because it wasn't defined", $statement);
}
$variable = $this->getVariable($name);
$variable->increaseUses();
$variable->increaseMutates();
/**
* Saves the last place where the variable was mutated
* We discard mutations inside loops because iterations could use the value
* and Zephir only provides top-down compilation
*/
$variable->setUsed(true, $statement);
return $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
*
* @param string $name
* @param CompilationContext $compilationContext
* @param array $statement
* @return Variable
*/
public function getVariableForWrite($name, $compilationContext, $statement = null)
{
/**
* Create superglobals just in time
*/
if ($this->isSuperGlobal($name)) {
if (!$this->hasVariable($name)) {
/**
* @TODO, injecting globals, initialize to null and check first?
*/
$compilationContext->codePrinter->output('zephir_get_global(&' . $name . ', SS("' . $name . '") TSRMLS_CC);');
$superVar = new Variable('variable', $name, $compilationContext->currentBranch);
$superVar->setIsInitialized(true, $compilationContext, $statement);
$superVar->setDynamicTypes('array');
$superVar->increaseMutates();
$superVar->increaseUses();
$this->_variables[$name] = $superVar;
return $superVar;
}
}
if (!$this->hasVariable($name)) {
throw new CompilerException("Cannot mutate variable '" . $name . "' because it wasn't defined", $statement);
}
$variable = $this->getVariable($name);
$variable->increaseUses();
$variable->increaseMutates();
return $variable;
}
