Checks the last call status or make a label jump to the next catch block.

@param CompilationContext $compilationContext
183095
public function addCallStatusOrJump(CompilationContext $compilationContext)
    {
        $compilationContext->headersManager->add('kernel/fcall');
        if ($compilationContext->insideTryCatch) {
            $compilationContext->codePrinter->output(
                'zephir_check_call_status_or_jump(try_end_'.$compilationContext->currentTryCatch.');'
            );

            return;
        }

        $compilationContext->codePrinter->output('zephir_check_call_status();');
    }
1129180
protected function _callDynamic(array $expression, CompilationContext $compilationContext)
    {
        $variable = $compilationContext->symbolTable->getVariableForRead(
            $expression['name'],
            $compilationContext,
            $expression
        );

        switch ($variable->getType()) {
            case 'variable':
            case 'string':
                break;

            default:
                throw new CompilerException(
                    'Variable type: '.$variable->getType().' cannot be used as dynamic caller',
                    $expression['left']
                );
        }

        /*
         * Resolve parameters
         */
        if (isset($expression['parameters'])) {
            $params = $this->getResolvedParams($expression['parameters'], $compilationContext, $expression);
        } else {
            $params = [];
        }

        $codePrinter = $compilationContext->codePrinter;

        /*
         * Process the expected symbol to be returned
         */
        $this->processExpectedObservedReturn($compilationContext);

        /**
         * At this point the function will be called in the PHP userland.
         * PHP functions only return zvals so we need to validate the target variable is also a zval.
         */
        $symbolVariable = $this->getSymbolVariable();
        if ($symbolVariable) {
            if (!$symbolVariable->isVariable()) {
                throw new CompilerException(
                    'Returned values by functions can only be assigned to variant variables',
                    $expression
                );
            }

            /*
             * We don't know the exact dynamic type returned by the method call
             */
            $symbolVariable->setDynamicTypes('undefined');
        }

        /*
         * Include fcall header
         */
        $compilationContext->headersManager->add('kernel/fcall');

        /*
         * Add the last call status to the current symbol table
         */
        $this->addCallStatusFlag($compilationContext);

        /*
         * Call functions must grown the stack
         */
        $compilationContext->symbolTable->mustGrownStack(true);

        if (!isset($expression['parameters'])) {
            if ($this->isExpectingReturn()) {
                if ('return_value' != $symbolVariable->getName()) {
                    if ($this->mustInitSymbolVariable()) {
                        $symbolVariable->setMustInitNull(true);
                        $symbolVariable->trackVariant($compilationContext);
                    }
                }
                $compilationContext->backend->callDynamicFunction($symbolVariable, $variable, $compilationContext);
            } else {
                $compilationContext->backend->callDynamicFunction(null, $variable, $compilationContext);
            }
        } else {
            if (\count($params)) {
                if ($this->isExpectingReturn()) {
                    if ('return_value' != $symbolVariable->getName()) {
                        if ($this->mustInitSymbolVariable()) {
                            $symbolVariable->setMustInitNull(true);
                            $symbolVariable->trackVariant($compilationContext);
                        }
                    }
                    $compilationContext->backend->callDynamicFunction(
                        $symbolVariable,
                        $variable,
                        $compilationContext,
                        $params
                    );
                } else {
                    $compilationContext->backend->callDynamicFunction(null, $variable, $compilationContext, $params);
                }
            } else {
                if ($this->isExpectingReturn()) {
                    if ('return_value' != $symbolVariable->getName()) {
                        if ($this->mustInitSymbolVariable()) {
                            $symbolVariable->setMustInitNull(true);
                            $symbolVariable->trackVariant($compilationContext);
                        }
                    }
                    $compilationContext->backend->callDynamicFunction($symbolVariable, $variable, $compilationContext);
                } else {
                    $compilationContext->backend->callDynamicFunction(null, $variable, $compilationContext);
                }
            }
        }

        /*
         * Temporary variables must be copied if they have more than one reference
         */
        foreach ($this->getMustCheckForCopyVariables() as $checkVariable) {
            $codePrinter->output('zephir_check_temp_parameter('.$checkVariable.');');
        }

        $this->addCallStatusOrJump($compilationContext);

        /*
         * We can mark temporary variables generated as idle
         */
        foreach ($this->getTemporalVariables() as $tempVariable) {
            $tempVariable->setIdle(true);
        }

        if ($this->isExpectingReturn()) {
            return new CompiledExpression('variable', $symbolVariable->getRealName(), $expression);
        }

        return new CompiledExpression('null', null, $expression);
    }
1040039
protected function doExecute(AssertionContext $context)
    {
        $context->getAssertion()->setIssueInstant($this->timeProvider->getTimestamp());

        $this->logger->info(
            sprintf('Assertion IssueInstant set to "%s"', $context->getAssertion()->getIssueInstantString()),
            LogHelper::getActionContext($context, $this)
        );
    }
1205100
public function setIsInitialized($initialized, CompilationContext $compilationContext)
    {
        $this->initialized = $initialized;

        if (!$initialized || !$compilationContext->branchManager instanceof BranchManager) {
            return;
        }

        $currentBranch = $compilationContext->branchManager->getCurrentBranch();

        if ($currentBranch instanceof Branch) {
            $this->initBranches[] = $currentBranch;
        }
    }
195053
public function hasVariable($name, CompilationContext $compilationContext = null)
    {
        return false !== $this->getVariable($name, $compilationContext ?: $this->compilationContext);
    }
597955
protected function doExecute(AssertionContext $context)
    {
        if ($context->getAssertion()) {
            $this->sessionProcessor->processAssertions(
                array($context->getAssertion()),
                $context->getProfileContext()->getOwnEntityDescriptor()->getEntityID(),
                $context->getProfileContext()->getPartyEntityDescriptor()->getEntityID()
            );
        }
    }
1234812
public function removeTopBlock()
    {
        if ($this->debug) {
            echo 'Compiler::' . __FUNCTION__ . "\n";
        }

        $o = array_pop($this->stack);
        if ($o === null) {
            throw new CompilationException($this, 'Syntax malformation, a block of unknown type was closed but was not opened.');
        }
        if ($o['custom']) {
            $class = $o['class'];
        } else {
            $class = Core::NAMESPACE_PLUGINS_BLOCKS . 'Plugin' . Core::toCamelCase($o['type']);
        }

        $this->curBlock = &$this->stack[count($this->stack) - 1];

        return call_user_func(array($class, 'postProcessing'), $this, $o['params'], '', '', $o['buffer']);
    }
17128
private function checkLinesAfterLastUse(int $lastUsePos): void
    {
        $lastUseEndPos = $this->getLastUseEndPos($lastUsePos);

        list($realLinesAfterUse, $whitespaceEnd) = $this->getRealLinesAfterLastUse($lastUseEndPos);

        $requiredLinesAfter = $this->isEndOfClass($lastUseEndPos)
            ? self::LINES_AFTER_LAST_USE_WHEN_LAST_IN_CLASS
            : self::LINES_AFTER_LAST_USE;

        if ($realLinesAfterUse !== $requiredLinesAfter) {
            $fix = $this->getFile()->addFixableError(
                self::MESSAGE_INCORRECT_LINES_COUNT_AFTER_LAST_USE,
                $lastUsePos,
                self::CODE_INCORRECT_LINES_COUNT_AFTER_LAST_USE,
                [
                    $requiredLinesAfter,
                    $realLinesAfterUse
                ]
            );

            if ($fix) {
                $this->fixLineAfterLastUse($lastUseEndPos, $whitespaceEnd, $requiredLinesAfter);
            }
        }
    }
1043260
protected function _actionCommentstatus($context)
    {
        $data = $context->data;
        $this->getItem()->openToComment = (bool) $data->status;
    }
511195
public function compileFunction(CompilationContext $compilationContext, FunctionDefinition $functionDefinition)
    {
        /** Make sure we do not produce calls like ZEPHIR_CALL_SELF */
        $bakClassDefinition = $compilationContext->classDefinition;
        $compilationContext->classDefinition = null;
        $compilationContext->currentMethod = $functionDefinition;

        $codePrinter = $compilationContext->codePrinter;
        $codePrinter->output('PHP_FUNCTION('.$functionDefinition->getInternalName().') {');
        $functionDefinition->compile($compilationContext);
        $codePrinter->output('}');
        $codePrinter->outputBlankLine();

        /* Restore */
        $compilationContext->classDefinition = $bakClassDefinition;
        $compilationContext->currentMethod = null;
    }
567503
public function compile(Compiler $compiler): void
    {
        $runtimeErrorClass = RuntimeError::class;
        $suppressedExceptionClass = SuppressedException::class;

        $compiler
            ->write("try {\n")
            ->indent()
            ->write("ob_start();\n\n")
            ->subcompile($this->getNode('body'))
            ->raw("\n")
            ->write("echo ob_get_clean();\n")
            ->outdent()
            ->write("} catch ({$runtimeErrorClass} \$exception) {\n")
            ->indent()
            ->write("ob_end_clean();\n\n")
            ->write("if (\$exception->getPrevious() === null) {\n")
            ->indent()
            ->write("throw \$exception;\n")
            ->outdent()
            ->write("}\n\n")
            ->write("\$suppressedException = new {$suppressedExceptionClass}(\$exception->getPrevious());\n")
            ->outdent()
            ->write("}\n\n");
    }
1373554
protected function _beforeControllerGet(AnCommandContext $context)
    {
        if ($this->_mixer->getRequest()->get == 'accesstoken') {
            $this->_mixer->execute('getaccesstoken', $context);
            return false;
        } else {
            $this->api = $this->getAPI();
        }
    }
619682
public function compile(CompilationContext $compilationContext)
    {
        if ($compilationContext->insideCycle) {
            $compilationContext->codePrinter->output('continue;');
        } else {
            throw new CompilerException("Cannot use 'continue' outside of a loop", $this->statement);
        }
    }
424005
public function compile(CompilationContext $compilationContext)
    {
        /*
         * Set the method currently being compiled
         */
        $compilationContext->currentMethod = $this;

        /*
         * Initialize the method warm-up to null
         */
        $compilationContext->methodWarmUp = null;

        /**
         * Assign pre-made compilation passes.
         */
        $localContext = $this->localContext;
        $typeInference = $this->typeInference;
        $callGathererPass = $this->callGathererPass;

        /**
         * Initialization of parameters happens in a fictitious external branch.
         */
        $branch = new Branch();
        $branch->setType(Branch::TYPE_EXTERNAL);
        /**
         * BranchManager helps to create graphs of conditional/loop/root/jump branches.
         */
        $branchManager = new BranchManager();
        $branchManager->addBranch($branch);

        $compilationContext->branchManager = $branchManager;

        /**
         * Every method has its own symbol table.
         */
        $symbolTable = new SymbolTable($compilationContext);
        if ($localContext) {
            $symbolTable->setLocalContext($localContext);
        }

        if ($this->staticVariables) {
            foreach ($this->staticVariables as $var) {
                $localVar = clone $var;
                $localVar->setIsExternal(true);
                $localVar->setLocalOnly(true);
                $localVar->setType('variable');
                $symbolTable->addRawVariable($localVar);
            }
        }

        /**
         * Parameters has an additional extra mutation.
         */
        $parameters = $this->parameters;
        if ($localContext) {
            if (\is_object($parameters)) {
                foreach ($parameters->getParameters() as $parameter) {
                    $localContext->increaseMutations($parameter['name']);
                }
            }
        }

        /**
         * Cache Manager manages function calls, method calls and class entries caches.
         */
        $cacheManager = new CacheManager();
        $cacheManager->setGatherer($callGathererPass);

        $compilationContext->cacheManager = $cacheManager;
        $compilationContext->typeInference = $typeInference;
        $compilationContext->symbolTable = $symbolTable;

        $oldCodePrinter = $compilationContext->codePrinter;

        /**
         * Change the code printer to a single method instance.
         */
        $codePrinter = new CodePrinter();
        $compilationContext->codePrinter = $codePrinter;

        /*
         * Set an empty function cache
         */
        $compilationContext->functionCache = null;

        /*
         * Reset try/catch and loop counter
         */
        $compilationContext->insideCycle = 0;
        $compilationContext->insideTryCatch = 0;
        $compilationContext->currentTryCatch = 0;

        if (\is_object($parameters)) {
            /**
             * Round 1. Create variables in parameters in the symbol table.
             */
            $classCastChecks = [];
            $substituteVars = [];
            foreach ($parameters->getParameters() as $parameter) {
                /*
                 * Change dynamic variables to low level types
                 */
                if ($typeInference) {
                    if (isset($parameter['data-type'])) {
                        if ('variable' == $parameter['data-type']) {
                            $type = $typeInference->getInferedType($parameter['name']);
                            if (\is_string($type)) {
                                /* promote polymorphic parameters to low level types */
                            }
                        }
                    } else {
                        $type = $typeInference->getInferedType($parameter['name']);
                        if (\is_string($type)) {
                            /* promote polymorphic parameters to low level types */
                        }
                    }
                }

                $symbolParam = null;

                if (isset($parameter['data-type'])) {
                    switch ($parameter['data-type']) {
                        case 'object':
                        case 'callable':
                        case 'resource':
                        case 'variable':
                            $symbol = $symbolTable->addVariable($parameter['data-type'], $parameter['name'], $compilationContext);
                            /* TODO: Move this to the respective backend, which requires refactoring how this works */
                            if ($compilationContext->backend->isZE3()) {
                                $symbol->setIsDoublePointer(true);
                                $substituteVars[$parameter['name']] = $symbolTable->addVariable('variable', $parameter['name'].'_sub', $compilationContext);
                            }
                            break;

                        default:
                            $symbol = $symbolTable->addVariable($parameter['data-type'], $parameter['name'], $compilationContext);
                            $symbolParam = $symbolTable->addVariable('variable', $parameter['name'].'_param', $compilationContext);
                            /* TODO: Move this to the respective backend, which requires refactoring how this works */
                            if ($compilationContext->backend->isZE3()) {
                                $symbolParam->setIsDoublePointer(true);
                            }
                            if ('string' == $parameter['data-type'] || 'array' == $parameter['data-type']) {
                                $symbol->setMustInitNull(true);
                            }
                            break;
                    }
                } else {
                    $symbol = $symbolTable->addVariable('variable', $parameter['name'], $compilationContext);
                }

                /* ZE3 only */
                if (isset($substituteVars[$parameter['name']])) {
                    $substituteVar = $substituteVars[$parameter['name']];
                    $substituteVar->increaseUses();
                }

                /*
                 * Some parameters can be read-only
                 */
                if (isset($parameter['const']) && $parameter['const']) {
                    $symbol->setReadOnly(true);
                    if (\is_object($symbolParam)) {
                        $symbolParam->setReadOnly(true);
                    }
                }

                if (\is_object($symbolParam)) {
                    /*
                     * Parameters are marked as 'external'
                     */
                    $symbolParam->setIsExternal(true);

                    /*
                     * Assuming they're initialized
                     */
                    $symbolParam->setIsInitialized(true, $compilationContext);

                    /*
                     * Initialize auxiliary parameter zvals to null
                     */
                    $symbolParam->setMustInitNull(true);

                    /*
                     * Increase uses
                     */
                    $symbolParam->increaseUses();
                } else {
                    if (isset($parameter['default'])) {
                        if (isset($parameter['data-type'])) {
                            if ('variable' == $parameter['data-type']) {
                                $symbol->setMustInitNull(true);
                            }
                        } else {
                            $symbol->setMustInitNull(true);
                        }
                    }
                }

                /*
                 * Original node where the variable was declared
                 */
                $symbol->setOriginal($parameter);

                /*
                 * Parameters are marked as 'external'
                 */
                $symbol->setIsExternal(true);

                /*
                 * Assuming they're initialized
                 */
                $symbol->setIsInitialized(true, $compilationContext);

                /*
                 * Variables with class/type must be objects across the execution
                 */
                if (isset($parameter['cast'])) {
                    $symbol->setDynamicTypes('object');
                    $symbol->setClassTypes($compilationContext->getFullName($parameter['cast']['value']));
                    $classCastChecks[] = [$symbol, $parameter];
                } else {
                    if (isset($parameter['data-type'])) {
                        if ('variable' == $parameter['data-type']) {
                            $symbol->setDynamicTypes('undefined');
                        }
                    } else {
                        $symbol->setDynamicTypes('undefined');
                    }
                }
            }
        }

        $compilationContext->backend->onPreCompile($this, $compilationContext);

        /*
         * Compile the block of statements if any
         */
        if (\is_object($this->statements)) {
            if ($this->hasModifier('static')) {
                $compilationContext->staticContext = true;
            } else {
                $compilationContext->staticContext = false;
            }

            /*
             * Compile the statements block as a 'root' branch
             */
            $this->statements->compile($compilationContext, false, Branch::TYPE_ROOT);
        }

        /**
         * Initialize variable default values.
         */
        $initVarCode = $compilationContext->backend->initializeVariableDefaults($symbolTable->getVariables(), $compilationContext);

        /**
         * Fetch parameters from vm-top.
         */
        $initCode = '';
        $code = '';
        if (\is_object($parameters)) {
            /**
             * Round 2. Fetch the parameters in the method.
             */
            $params = [];
            $requiredParams = [];
            $optionalParams = [];
            $numberRequiredParams = 0;
            $numberOptionalParams = 0;
            foreach ($parameters->getParameters() as $parameter) {
                if (isset($parameter['data-type'])) {
                    $dataType = $parameter['data-type'];
                } else {
                    $dataType = 'variable';
                }

                switch ($dataType) {
                    case 'object':
                    case 'callable':
                    case 'resource':
                    case 'variable':
                        if (!$this->isInternal()) {
                            $params[] = '&'.$parameter['name'];
                        } else {
                            $params[] = $parameter['name'];
                        }
                        break;

                    default:
                        if (!$this->isInternal()) {
                            $params[] = '&'.$parameter['name'].'_param';
                        } else {
                            $params[] = $parameter['name'].'_param';
                        }
                        break;
                }

                if (isset($parameter['default'])) {
                    $optionalParams[] = $parameter;
                    ++$numberOptionalParams;
                } else {
                    $requiredParams[] = $parameter;
                    ++$numberRequiredParams;
                }
            }

            /**
             * Pass the write detector to the method statement block to check if the parameter
             * variable is modified so as do the proper separation.
             */
            $parametersToSeparate = [];
            if (\is_object($this->statements)) {
                /*
                 * If local context is not available
                 */
                if (!$localContext) {
                    $writeDetector = new WriteDetector();
                }

                foreach ($parameters->getParameters() as $parameter) {
                    if (isset($parameter['data-type'])) {
                        $dataType = $parameter['data-type'];
                    } else {
                        $dataType = 'variable';
                    }

                    switch ($dataType) {
                        case 'variable':
                        case 'string':
                        case 'array':
                        case 'resource':
                        case 'object':
                        case 'callable':
                            $name = $parameter['name'];
                            if (!$localContext) {
                                if ($writeDetector->detect($name, $this->statements->getStatements())) {
                                    $parametersToSeparate[$name] = true;
                                }
                            } else {
                                if ($localContext->getNumberOfMutations($name) > 1) {
                                    $parametersToSeparate[$name] = true;
                                }
                            }
                            break;
                    }
                }
            }

            /*
             * Initialize required parameters
             */
            foreach ($requiredParams as $parameter) {
                if (isset($parameter['mandatory'])) {
                    $mandatory = $parameter['mandatory'];
                } else {
                    $mandatory = 0;
                }

                if (isset($parameter['data-type'])) {
                    $dataType = $parameter['data-type'];
                } else {
                    $dataType = 'variable';
                }

                if ('variable' != $dataType) {
                    /*
                     * Assign value from zval to low level type
                     */
                    if ($mandatory) {
                        $initCode .= $this->checkStrictType($parameter, $compilationContext);
                    } else {
                        $initCode .= $this->assignZvalValue($parameter, $compilationContext);
                    }
                }

                switch ($dataType) {
                    case 'variable':
                    case 'resource':
                    case 'object':
                    case 'callable':
                        if (isset($parametersToSeparate[$parameter['name']])) {
                            $symbolTable->mustGrownStack(true);
                            $initCode .= "\t".'ZEPHIR_SEPARATE_PARAM('.$parameter['name'].');'.PHP_EOL;
                        }
                        break;
                }
            }

            /*
             * Initialize optional parameters
             */
            foreach ($optionalParams as $parameter) {
                if (isset($parameter['mandatory'])) {
                    $mandatory = $parameter['mandatory'];
                } else {
                    $mandatory = 0;
                }

                if (isset($parameter['data-type'])) {
                    $dataType = $parameter['data-type'];
                } else {
                    $dataType = 'variable';
                }

                switch ($dataType) {
                    case 'object':
                    case 'callable':
                    case 'resource':
                    case 'variable':
                        $name = $parameter['name'];
                        break;

                    default:
                        $name = $parameter['name'].'_param';
                        break;
                }

                /**
                 * Assign the default value according to the variable's type.
                 */
                $targetVar = $compilationContext->symbolTable->getVariableForWrite($name, $compilationContext);
                $initCode .= "\t".$compilationContext->backend->ifVariableValueUndefined($targetVar, $compilationContext, false, false).PHP_EOL;

                if ($compilationContext->backend->isZE3()) {
                    if ($targetVar->isDoublePointer() && isset($substituteVars[$parameter['name']])) {
                        $substituteVar = $substituteVars[$parameter['name']];
                        $initCode .= "\t\t".$targetVar->getName().' = &'.$substituteVar->getName().';'.PHP_EOL;
                    }
                }
                $initCode .= $this->assignDefaultValue($parameter, $compilationContext);

                if (isset($parametersToSeparate[$name]) || 'variable' != $dataType) {
                    $initCode .= "\t".'} else {'.PHP_EOL;
                    if (isset($parametersToSeparate[$name])) {
                        $initCode .= "\t\t".'ZEPHIR_SEPARATE_PARAM('.$name.');'.PHP_EOL;
                    } else {
                        if ($mandatory) {
                            $initCode .= $this->checkStrictType($parameter, $compilationContext, $mandatory);
                        } else {
                            $initCode .= "\t".$this->assignZvalValue($parameter, $compilationContext);
                        }
                    }
                }

                $initCode .= "\t".'}'.PHP_EOL;
            }

            /*
             * Fetch the parameters to zval pointers
             */
            $codePrinter->preOutputBlankLine();

            if (!$this->isInternal()) {
                $compilationContext->headersManager->add('kernel/memory');
                if ($symbolTable->getMustGrownStack()) {
                    $code .= "\t".'zephir_fetch_params(1, '.$numberRequiredParams.', '.$numberOptionalParams.', '.implode(', ', $params).');'.PHP_EOL;
                } else {
                    $code .= "\t".'zephir_fetch_params(0, '.$numberRequiredParams.', '.$numberOptionalParams.', '.implode(', ', $params).');'.PHP_EOL;
                }
            } else {
                foreach ($params as $param) {
                    /* TODO: Migrate all this code to codeprinter, get rid of temp code printer */
                    $tempCodePrinter = new CodePrinter();
                    $realCodePrinter = $compilationContext->codePrinter;
                    $compilationContext->codePrinter = $tempCodePrinter;
                    $paramVar = $compilationContext->symbolTable->getVariableForRead($param, $compilationContext);
                    $compilationContext->backend->assignZval($paramVar, $param.'_ext', $compilationContext);
                    $code .= "\t".$tempCodePrinter->getOutput().PHP_EOL;
                    $compilationContext->codePrinter = $realCodePrinter;
                }
            }
            $code .= PHP_EOL;
        }

        $code .= $initCode.$initVarCode;
        $codePrinter->preOutput($code);

        $compilationContext->headersManager->add('kernel/object');
        /*
         * Fetch used superglobals
         */
        foreach ($symbolTable->getVariables() as $name => $variable) {
            if ($variable->isSuperGlobal()) {
                $globalVar = $symbolTable->getVariable($name);
                $codePrinter->preOutput("\t".$compilationContext->backend->fetchGlobal($globalVar, $compilationContext, false));
            }
            if ($variable->isLocalSatic()) {
                $staticVar = $symbolTable->getVariable($name);

                $codePrinter->preOutput(sprintf(
                    "\t".'zephir_read_static_property_ce(%s%s, %s, SL("%s"), PH_NOISY_CC%s);',
                    $staticVar->isDoublePointer() ? '' : '&',
                    $staticVar->getName(),
                    $this->classDefinition->getClassEntry(),
                    $staticVar->getName(),
                    ''
                ));
            }
        }

        /*
         * Grow the stack if needed
         */
        if ($symbolTable->getMustGrownStack()) {
            $compilationContext->headersManager->add('kernel/memory');
            $codePrinter->preOutput("\t".'ZEPHIR_MM_GROW();');
        }

        /**
         * Check if there are unused variables.
         */
        $usedVariables = [];
        $classDefinition = $this->getClassDefinition();
        if ($classDefinition) {
            $completeName = $classDefinition->getCompleteName();
        } else {
            $completeName = '[unknown]';
        }

        foreach ($symbolTable->getVariables() as $variable) {
            if ($variable->getNumberUses() <= 0) {
                if (false == $variable->isExternal()) {
                    $compilationContext->logger->warning(
                        'Variable "'.$variable->getName().'" declared but not used in '.$completeName.'::'.$this->getName(),
                        ['unused-variable', $variable->getOriginal()]
                    );
                    continue;
                }
                $compilationContext->logger->warning(
                    'Variable "'.$variable->getName().'" declared but not used in '.$completeName.'::'.$this->getName(),
                    ['unused-variable-external', $variable->getOriginal()]
                );
            }

            if ('this_ptr' != $variable->getName() && 'return_value' != $variable->getName() && 'return_value_ptr' != $variable->getName()) {
                $type = $variable->getType();
                if (!isset($usedVariables[$type])) {
                    $usedVariables[$type] = [];
                }
                $usedVariables[$type][] = $variable;
            }
        }

        /*
         * Check if there are assigned but not used variables
         * Warn whenever a variable is unused aside from its declaration.
         */
        foreach ($symbolTable->getVariables() as $variable) {
            if (true == $variable->isExternal() || $variable->isTemporal()) {
                continue;
            }

            if ('this_ptr' == $variable->getName() || 'return_value' == $variable->getName() || 'return_value_ptr' == $variable->getName() || 'ZEPHIR_LAST_CALL_STATUS' == $variable->getName()) {
                continue;
            }

            if (!$variable->isUsed()) {
                $node = $variable->getLastUsedNode();
                if (\is_array($node)) {
                    $expression = isset($node['expr']) ? $node['expr'] : $node;
                    $compilationContext->logger->warning(
                        'Variable "'.$variable->getName().'" assigned but not used in '.$completeName.'::'.$this->getName(),
                        ['unused-variable', $expression]
                    );
                } else {
                    $compilationContext->logger->warning(
                        'Variable "'.$variable->getName().'" assigned but not used in '.$completeName.'::'.$this->getName(),
                        ['unused-variable', $variable->getOriginal()]
                    );
                }
            }
        }

        if (\count($usedVariables)) {
            $codePrinter->preOutputBlankLine();
        }

        /**
         * Generate the variable definition for variables used.
         */
        $initCode = "\t".implode(PHP_EOL."\t", $compilationContext->backend->declareVariables($this, $usedVariables, $compilationContext));
        if ($initCode) {
            $codePrinter->preOutput($initCode);
        }

        /*
         * Finalize the method compilation
         */
        if (\is_object($this->statements)) {
            /**
             * If the last statement is not a 'return' or 'throw' we need to
             * restore the memory stack if needed.
             */
            $lastType = $this->statements->getLastStatementType();

            if ('return' != $lastType && 'throw' != $lastType && !$this->hasChildReturnStatementType($this->statements->getLastStatement())) {
                if ($symbolTable->getMustGrownStack()) {
                    $compilationContext->headersManager->add('kernel/memory');
                    $codePrinter->output("\t".'ZEPHIR_MM_RESTORE();');
                }

                /*
                 * If a method has return-type hints we need to ensure the last statement is a 'return' statement
                 */
                if ($this->hasReturnTypes()) {
                    throw new CompilerException(
                        'Reached end of the method without returning a valid type specified in the return-type hints',
                        $this->expression['return-type']
                    );
                }
            }
        }

        $compilationContext->backend->onPostCompile($this, $compilationContext);

        /**
         * Remove macros that grow/restore the memory frame stack if it wasn't used.
         */
        $code = $this->removeMemoryStackReferences($symbolTable, $codePrinter->getOutput());

        /*
         * Restore the compilation context
         */
        $oldCodePrinter->output($code);
        $compilationContext->codePrinter = $oldCodePrinter;

        $compilationContext->branchManager = null;
        $compilationContext->cacheManager = null;
        $compilationContext->typeInference = null;

        $codePrinter->clear();

        return null;
    }
445150
public function initNonReferenced(CompilationContext $compilationContext)
    {
        $compilationContext->headersManager->add('kernel/memory');
        $compilationContext->codePrinter->output('ZEPHIR_INIT_ZVAL_NREF('.$this->getName().');');
    }
1261243
public function preCompile(CompilationContext $compilationContext)
    {
        $this->compiler = $compilationContext->compiler;

        /*
         * Pre-Compile methods
         */
        foreach ($this->methods as $method) {
            if ('class' == $this->getType() && !$method->isAbstract()) {
                $method->preCompile($compilationContext);
            }
        }
    }
924039
public function observeVariant(CompilationContext $compilationContext)
    {
        if ($this->numberSkips) {
            --$this->numberSkips;

            return;
        }

        $name = $this->getName();
        if ('this_ptr' != $name && 'return_value' != $name) {
            if (false === $this->initBranch) {
                $this->initBranch = $compilationContext->currentBranch;
            }

            $compilationContext->headersManager->add('kernel/memory');
            $compilationContext->symbolTable->mustGrownStack(true);
            $symbol = $compilationContext->backend->getVariableCode($this);

            if ($this->variantInits > 0 || $compilationContext->insideCycle) {
                $this->mustInitNull = true;
                $compilationContext->codePrinter->output('ZEPHIR_OBS_NVAR('.$symbol.');');
            } else {
                $compilationContext->codePrinter->output('ZEPHIR_OBS_VAR('.$symbol.');');
            }

            ++$this->variantInits;
        }
    }