PHP Zephir\Utils类代码示例

 /**
  * @param array $expression
  * @param Call $call
  * @param CompilationContext $context
  * @return bool|CompiledExpression|mixed
  * @throws CompilerException
  */
 public function optimize(array $expression, Call $call, CompilationContext $context)
 {
     if (!isset($expression['parameters'])) {
         return false;
     }
     if (count($expression['parameters']) != 2) {
         return false;
     }
     /**
      * Process the expected symbol to be returned
      */
     $call->processExpectedReturn($context);
     $symbolVariable = $call->getSymbolVariable();
     if ($symbolVariable->isNotVariableAndString()) {
         throw new CompilerException("Returned values by functions can only be assigned to variant variables", $expression);
     }
     if ($expression['parameters'][0]['parameter']['type'] == 'string') {
         $str = Utils::addSlashes($expression['parameters'][0]['parameter']['value']);
         unset($expression['parameters'][0]);
     }
     if ($call->mustInitSymbolVariable()) {
         $symbolVariable->initVariant($context);
     }
     $resolvedParams = $call->getReadOnlyResolvedParams($expression['parameters'], $context, $expression);
     $context->headersManager->add('kernel/string');
     $symbolVariable->setDynamicTypes('string');
     if (isset($str)) {
         $context->codePrinter->output('zephir_fast_join_str(' . $symbolVariable->getName() . ', SL("' . $str . '"), ' . $resolvedParams[0] . ' TSRMLS_CC);');
         return new CompiledExpression('variable', $symbolVariable->getRealName(), $expression);
     }
     $context->codePrinter->output('zephir_fast_join(' . $symbolVariable->getName() . ', ' . $resolvedParams[0] . ', ' . $resolvedParams[1] . ' TSRMLS_CC);');
     return new CompiledExpression('variable', $symbolVariable->getRealName(), $expression);
 }

 /**
  * @param CompilationContext $compilationContext
  * @throws CompilerException
  */
 public function compile(CompilationContext $compilationContext)
 {
     $compilationContext->headersManager->add('kernel/exception');
     $codePrinter = $compilationContext->codePrinter;
     $statement = $this->_statement;
     $expr = $statement['expr'];
     /**
      * This optimizes throw new Exception("hello")
      */
     if (!$compilationContext->insideTryCatch) {
         if (isset($expr['class'])) {
             if (isset($expr['parameters']) && count($expr['parameters']) == 1) {
                 if ($expr['parameters'][0]['parameter']['type'] == 'string') {
                     $className = Utils::getFullName($expr['class'], $compilationContext->classDefinition->getNamespace(), $compilationContext->aliasManager);
                     if ($compilationContext->compiler->isClass($className)) {
                         $classDefinition = $compilationContext->compiler->getClassDefinition($className);
                         $message = $expr['parameters'][0]['parameter']['value'];
                         $codePrinter->output('ZEPHIR_THROW_EXCEPTION_DEBUG_STR(' . $classDefinition->getClassEntry() . ', "' . Utils::addSlashes($message, true, Types::STRING) . '", "' . Compiler::getShortUserPath($statement['expr']['file']) . '", ' . $statement['expr']['line'] . ');');
                         $codePrinter->output('return;');
                         return;
                     } else {
                         if ($compilationContext->compiler->isInternalClass($className)) {
                             $classEntry = $compilationContext->classDefinition->getClassEntryByClassName($className, true);
                             if ($classEntry) {
                                 $message = $expr['parameters'][0]['parameter']['value'];
                                 $codePrinter->output('ZEPHIR_THROW_EXCEPTION_DEBUG_STR(' . $classEntry . ', "' . Utils::addSlashes($message, true, Types::STRING) . '", "' . Compiler::getShortUserPath($statement['expr']['file']) . '", ' . $statement['expr']['line'] . ');');
                                 $codePrinter->output('return;');
                                 return;
                             }
                         }
                     }
                 }
             }
         }
     }
     $throwExpr = new Expression($expr);
     $resolvedExpr = $throwExpr->compile($compilationContext);
     if ($resolvedExpr->getType() != 'variable') {
         throw new CompilerException("Expression '" . $resolvedExpr->getType() . '" cannot be used as exception', $expr);
     }
     $variableVariable = $compilationContext->symbolTable->getVariableForRead($resolvedExpr->getCode(), $compilationContext, $expr);
     if ($variableVariable->getType() != 'variable') {
         throw new CompilerException("Variable '" . $variableVariable->getType() . "' cannot be used as exception", $expr);
     }
     $codePrinter->output('zephir_throw_exception_debug(' . $variableVariable->getName() . ', "' . Compiler::getShortUserPath($statement['expr']['file']) . '", ' . $statement['expr']['line'] . ' TSRMLS_CC);');
     if (!$compilationContext->insideTryCatch) {
         $codePrinter->output('ZEPHIR_MM_RESTORE();');
         $codePrinter->output('return;');
     } else {
         $codePrinter->output('goto try_end_' . $compilationContext->insideTryCatch . ';');
         $codePrinter->outputBlankLine();
     }
     if ($variableVariable->isTemporal()) {
         $variableVariable->setIdle(true);
     }
 }

 /**
  * @param array $expression
  * @param Call $call
  * @param CompilationContext $context
  * @return bool|CompiledExpression|mixed
  * @throws CompilerException
  */
 public function optimize(array $expression, Call $call, CompilationContext $context)
 {
     if (!isset($expression['parameters'])) {
         return false;
     }
     if (count($expression['parameters']) < 2) {
         throw new CompilerException("'explode' require two parameter");
     }
     /**
      * Process the expected symbol to be returned
      */
     $call->processExpectedReturn($context);
     $symbolVariable = $call->getSymbolVariable(true, $context);
     if ($symbolVariable->isNotVariableAndString()) {
         throw new CompilerException("Returned values by functions can only be assigned to variant variables", $expression);
     }
     /**
      * Process limit
      */
     $limit = 'LONG_MAX';
     $limitOffset = 2;
     if (count($expression['parameters']) == 3 && $expression['parameters'][2]['parameter']['type'] == 'int') {
         $limit = $expression['parameters'][2]['parameter']['value'] . ' ';
         unset($expression['parameters'][2]);
     }
     if ($expression['parameters'][0]['parameter']['type'] == 'string') {
         $str = Utils::addSlashes($expression['parameters'][0]['parameter']['value']);
         unset($expression['parameters'][0]);
         if (count($expression['parameters']) == 2) {
             $limitOffset = 1;
         }
     }
     $resolvedParams = $call->getReadOnlyResolvedParams($expression['parameters'], $context, $expression);
     if (isset($resolvedParams[$limitOffset])) {
         $context->headersManager->add('kernel/operators');
         $limit = 'zephir_get_intval(' . $resolvedParams[$limitOffset] . ') ';
     }
     $context->headersManager->add('kernel/string');
     $symbolVariable->setDynamicTypes('array');
     if ($call->mustInitSymbolVariable()) {
         $symbolVariable->initVariant($context);
     }
     $symbol = $context->backend->getVariableCode($symbolVariable);
     if (isset($str)) {
         $context->codePrinter->output('zephir_fast_explode_str(' . $symbol . ', SL("' . $str . '"), ' . $resolvedParams[0] . ', ' . $limit . ' TSRMLS_CC);');
         return new CompiledExpression('variable', $symbolVariable->getRealName(), $expression);
     }
     $context->codePrinter->output('zephir_fast_explode(' . $symbol . ', ' . $resolvedParams[0] . ', ' . $resolvedParams[1] . ', ' . $limit . ' TSRMLS_CC);');
     return new CompiledExpression('variable', $symbolVariable->getRealName(), $expression);
 }

 /**
  * @param array $expression
  * @param Call $call
  * @param CompilationContext $context
  * @return bool|CompiledExpression|mixed
  */
 public function optimize(array $expression, Call $call, CompilationContext $context)
 {
     if (!isset($expression['parameters'])) {
         return false;
     }
     if (count($expression['parameters']) != 2) {
         return false;
     }
     if ($expression['parameters'][1]['parameter']['type'] == 'string') {
         $str = Utils::addSlashes($expression['parameters'][1]['parameter']['value']);
         unset($expression['parameters'][1]);
     }
     $resolvedParams = $call->getReadOnlyResolvedParams($expression['parameters'], $context, $expression);
     $context->headersManager->add('kernel/string');
     if (isset($str)) {
         return new CompiledExpression('bool', 'zephir_memnstr_str(' . $resolvedParams[0] . ', SL("' . $str . '"), "' . Compiler::getShortUserPath($expression['file']) . '", ' . $expression['line'] . ')', $expression);
     }
     return new CompiledExpression('bool', 'zephir_memnstr(' . $resolvedParams[0] . ', ' . $resolvedParams[1] . ', "' . Compiler::getShortUserPath($expression['file']) . '", ' . $expression['line'] . ')', $expression);
 }

 /**
  * @param array $expression
  * @param Call $call
  * @param CompilationContext $context
  * @return bool|CompiledExpression|mixed
  */
 public function optimize(array $expression, Call $call, CompilationContext $context)
 {
     if (!isset($expression['parameters'])) {
         return false;
     }
     if (count($expression['parameters']) != 2) {
         return false;
     }
     if ($expression['parameters'][1]['parameter']['type'] == 'string') {
         $str = Utils::addSlashes($expression['parameters'][1]['parameter']['value']);
         unset($expression['parameters'][1]);
     }
     $context->headersManager->add('kernel/object');
     $resolvedParams = $call->getReadOnlyResolvedParams($expression['parameters'], $context, $expression);
     if (isset($str)) {
         return new CompiledExpression('bool', '(zephir_method_exists_ex(' . $resolvedParams[0] . ', SS("' . strtolower($str) . '") TSRMLS_CC) == SUCCESS)', $expression);
     }
     return new CompiledExpression('bool', '(zephir_method_exists(' . $resolvedParams[0] . ', ' . $resolvedParams[1] . ' TSRMLS_CC)  == SUCCESS)', $expression);
 }

 /**
  * @param array $expression
  * @param Call $call
  * @param CompilationContext $context
  * @return bool|CompiledExpression|mixed
  */
 public function optimize(array $expression, Call $call, CompilationContext $context)
 {
     if (!isset($expression['parameters'])) {
         return false;
     }
     if (count($expression['parameters']) != 1) {
         return false;
     }
     if ($expression['parameters'][0]['parameter']['type'] == 'string') {
         $str = Utils::addSlashes($expression['parameters'][0]['parameter']['value']);
         unset($expression['parameters'][0]);
     }
     $context->headersManager->add('kernel/object');
     $resolvedParams = $call->getReadOnlyResolvedParams($expression['parameters'], $context, $expression);
     if (isset($str)) {
         /* TODO: Solve this macro stuff better, move to backend */
         $macro = $context->backend->isZE3() ? 'SL' : 'SS';
         return new CompiledExpression('bool', '(zephir_function_exists_ex(' . $macro . '("' . strtolower($str) . '") TSRMLS_CC) == SUCCESS)', $expression);
     }
     return new CompiledExpression('bool', '(zephir_function_exists(' . $resolvedParams[0] . ' TSRMLS_CC)  == SUCCESS)', $expression);
 }

//.........这里部分代码省略.........
                                 throw new CompilerException("Returning type: " . $resolvedExpr->getType() . " but this type is not compatible with return-type hints declared in the method", $statement['expr']);
                             }
                             break;
                         case 'bool':
                             if (!$currentMethod->areReturnTypesBoolCompatible()) {
                                 throw new CompilerException("Returning type: " . $resolvedExpr->getType() . " but this type is not compatible with return-type hints declared in the method", $statement['expr']);
                             }
                             break;
                         case 'variable':
                             break;
                     }
                     break;
             }
         }
         switch ($resolvedExpr->getType()) {
             case 'null':
                 $codePrinter->output('RETURN_MM_NULL();');
                 break;
             case 'int':
             case 'uint':
             case 'long':
             case 'char':
             case 'uchar':
                 $codePrinter->output('RETURN_MM_LONG(' . $resolvedExpr->getCode() . ');');
                 break;
             case 'bool':
                 $codePrinter->output('RETURN_MM_BOOL(' . $resolvedExpr->getBooleanCode() . ');');
                 break;
             case 'double':
                 $codePrinter->output('RETURN_MM_DOUBLE(' . $resolvedExpr->getCode() . ');');
                 break;
             case 'string':
             case 'istring':
                 $codePrinter->output('RETURN_MM_STRING("' . Utils::addSlashes($resolvedExpr->getCode()) . '", 1);');
                 break;
             case 'array':
                 if ($resolvedExpr->getCode() != 'return_value') {
                     $codePrinter->output('RETURN_CTOR(' . $resolvedExpr->getCode() . ');');
                 } else {
                     $codePrinter->output('RETURN_MM();');
                 }
                 break;
             case 'variable':
                 if (!isset($symbolVariable)) {
                     $symbolVariable = $compilationContext->symbolTable->getVariableForRead($resolvedExpr->getCode(), $compilationContext, $statement['expr']);
                 }
                 switch ($symbolVariable->getType()) {
                     case 'int':
                     case 'uint':
                     case 'long':
                     case 'char':
                     case 'uchar':
                         $codePrinter->output('RETURN_MM_LONG(' . $symbolVariable->getName() . ');');
                         break;
                     case 'double':
                         $codePrinter->output('RETURN_MM_DOUBLE(' . $symbolVariable->getName() . ');');
                         break;
                     case 'string':
                     case 'array':
                         $codePrinter->output('RETURN_CTOR(' . $resolvedExpr->getCode() . ');');
                         break;
                     case 'bool':
                         $codePrinter->output('RETURN_MM_BOOL(' . $symbolVariable->getName() . ');');
                         break;
                     case 'variable':
                         if ($symbolVariable->getName() == 'this_ptr') {

 /**
  * Resolve parameters using zvals in the stack and without allocating memory for constants
  *
  * @param array $parameters
  * @param CompilationContext $compilationContext
  * @param array $expression
  * @return array
  */
 public function getReadOnlyResolvedParams($parameters, CompilationContext $compilationContext, array $expression)
 {
     $codePrinter = $compilationContext->codePrinter;
     $exprParams = $this->getResolvedParamsAsExpr($parameters, $compilationContext, $expression, true);
     $params = array();
     $types = array();
     $dynamicTypes = array();
     foreach ($exprParams as $compiledExpression) {
         $expression = $compiledExpression->getOriginal();
         switch ($compiledExpression->getType()) {
             case 'null':
                 $params[] = $compilationContext->backend->resolveValue('null', $compilationContext);
                 $types[] = 'null';
                 $dynamicTypes[] = 'null';
                 break;
             case 'int':
             case 'uint':
             case 'long':
                 $parameterVariable = $compilationContext->backend->getScalarTempVariable('variable', $compilationContext, true);
                 $compilationContext->backend->assignLong($parameterVariable, $compiledExpression->getCode(), $compilationContext);
                 $this->_temporalVariables[] = $parameterVariable;
                 $params[] = '&' . $parameterVariable->getName();
                 $types[] = $parameterVariable->getType();
                 $dynamicTypes[] = $parameterVariable->getType();
                 break;
             case 'char':
             case 'uchar':
                 $parameterVariable = $compilationContext->backend->getScalarTempVariable('variable', $compilationContext, true);
                 $compilationContext->backend->assignLong($parameterVariable, '\'' . $compiledExpression->getCode() . '\'', $compilationContext);
                 $this->_temporalVariables[] = $parameterVariable;
                 $params[] = '&' . $parameterVariable->getName();
                 $types[] = $parameterVariable->getType();
                 $dynamicTypes[] = $parameterVariable->getType();
                 break;
             case 'double':
                 $parameterVariable = $compilationContext->backend->getScalarTempVariable('variable', $compilationContext, true);
                 $codePrinter->output('ZVAL_DOUBLE(&' . $parameterVariable->getName() . ', ' . $compiledExpression->getCode() . ');');
                 $this->_temporalVariables[] = $parameterVariable;
                 $params[] = '&' . $parameterVariable->getName();
                 $types[] = $parameterVariable->getType();
                 $dynamicTypes[] = $parameterVariable->getType();
                 break;
             case 'bool':
                 if ($compiledExpression->getCode() == 'true') {
                     $params[] = $compilationContext->backend->resolveValue('true', $compilationContext);
                 } else {
                     if ($compiledExpression->getCode() == 'false') {
                         $params[] = $compilationContext->backend->resolveValue('false', $compilationContext);
                     } else {
                         throw new Exception('?');
                     }
                 }
                 $types[] = 'bool';
                 $dynamicTypes[] = 'bool';
                 break;
             case 'ulong':
             case 'string':
             case 'istring':
                 if ($compilationContext->backend->getName() == 'ZendEngine2') {
                     $parameterVariable = $compilationContext->symbolTable->getTempLocalVariableForWrite('variable', $compilationContext, $expression);
                 } else {
                     $parameterVariable = $compilationContext->symbolTable->getTempVariableForWrite('variable', $compilationContext, $expression);
                 }
                 $compilationContext->backend->assignString($parameterVariable, Utils::addSlashes($compiledExpression->getCode()), $compilationContext, true, false);
                 $this->_temporalVariables[] = $parameterVariable;
                 $params[] = '&' . $parameterVariable->getName();
                 $types[] = $parameterVariable->getType();
                 $dynamicTypes[] = $parameterVariable->getType();
                 break;
             case 'array':
                 $parameterVariable = $compilationContext->symbolTable->getVariableForRead($compiledExpression->getCode(), $compilationContext, $expression);
                 $params[] = $compilationContext->backend->getVariableCode($parameterVariable);
                 $types[] = $parameterVariable->getType();
                 $dynamicTypes[] = $parameterVariable->getType();
                 break;
             case 'variable':
                 $parameterVariable = $compilationContext->symbolTable->getVariableForRead($compiledExpression->getCode(), $compilationContext, $expression);
                 switch ($parameterVariable->getType()) {
                     case 'int':
                     case 'uint':
                     case 'long':
                     case 'ulong':
                         $parameterTempVariable = $compilationContext->backend->getScalarTempVariable('variable', $compilationContext, true);
                         $codePrinter->output('ZVAL_LONG(&' . $parameterTempVariable->getName() . ', ' . $compiledExpression->getCode() . ');');
                         $params[] = '&' . $parameterTempVariable->getName();
                         $types[] = $parameterTempVariable->getType();
                         $dynamicTypes[] = $parameterTempVariable->getType();
                         $this->_temporalVariables[] = $parameterTempVariable;
                         break;
                     case 'char':
                     case 'uchar':
                         $parameterTempVariable = $compilationContext->backend->getScalarTempVariable('variable', $compilationContext, true);
//.........这里部分代码省略.........

 public function generateFunctionInformation()
 {
     $headerPrinter = new CodePrinter();
     $entryPrinter = new CodePrinter();
     /**
      * Create argument info
      */
     foreach ($this->functionDefinitions as $func) {
         $funcName = $func->getInternalName();
         $argInfoName = 'arginfo_' . strtolower($funcName);
         $headerPrinter->output('PHP_FUNCTION(' . $funcName . ');');
         $parameters = $func->getParameters();
         if (count($parameters)) {
             $headerPrinter->output('ZEND_BEGIN_ARG_INFO_EX(' . $argInfoName . ', 0, 0, ' . $func->getNumberOfRequiredParameters() . ')');
             foreach ($parameters->getParameters() as $parameter) {
                 switch ($parameter['data-type']) {
                     case 'array':
                         $headerPrinter->output("\t" . 'ZEND_ARG_ARRAY_INFO(0, ' . $parameter['name'] . ', ' . (isset($parameter['default']) ? 1 : 0) . ')');
                         break;
                     case 'variable':
                         if (isset($parameter['cast'])) {
                             switch ($parameter['cast']['type']) {
                                 case 'variable':
                                     $value = $parameter['cast']['value'];
                                     $headerPrinter->output("\t" . 'ZEND_ARG_OBJ_INFO(0, ' . $parameter['name'] . ', ' . Utils::escapeClassName($compilationContext->getFullName($value)) . ', ' . (isset($parameter['default']) ? 1 : 0) . ')');
                                     break;
                                 default:
                                     throw new Exception('Unexpected exception');
                             }
                         } else {
                             $headerPrinter->output("\t" . 'ZEND_ARG_INFO(0, ' . $parameter['name'] . ')');
                         }
                         break;
                     default:
                         $headerPrinter->output("\t" . 'ZEND_ARG_INFO(0, ' . $parameter['name'] . ')');
                         break;
                 }
             }
             $headerPrinter->output('ZEND_END_ARG_INFO()');
             $headerPrinter->outputBlankLine();
         }
         /** Generate FE's */
         $paramData = count($parameters) ? $argInfoName : 'NULL';
         if ($func->isGlobal()) {
             $entryPrinter->output('ZEND_NAMED_FE(' . $func->getName() . ', ZEND_FN(' . $funcName . '), ' . $paramData . ')');
         } else {
             $entryPrinter->output('ZEND_NS_NAMED_FE("' . str_replace('\\', '\\\\', $func->getNamespace()) . '", ' . $func->getName() . ', ZEND_FN(' . $funcName . '), ' . $paramData . ')');
         }
     }
     $entryPrinter->output('ZEND_FE_END');
     return array($headerPrinter->getOutput(), $entryPrinter->getOutput());
 }

 /**
  * Tries to find specific an specialized optimizer for function calls
  *
  * @param string $funcName
  * @param array $expression
  * @param Call $call
  * @param CompilationContext $compilationContext
  */
 protected function optimize($funcName, array $expression, Call $call, CompilationContext $compilationContext)
 {
     $optimizer = false;
     /**
      * Check if the optimizer is already cached
      */
     if (!isset(self::$_optimizers[$funcName])) {
         $camelizeFunctionName = Utils::camelize($funcName);
         /**
          * Check every optimizer directory for an optimizer
          */
         foreach (self::$_optimizerDirectories as $directory) {
             $path = $directory . DIRECTORY_SEPARATOR . $camelizeFunctionName . 'Optimizer.php';
             if (file_exists($path)) {
                 require_once $path;
                 $className = 'Zephir\\Optimizers\\FunctionCall\\' . $camelizeFunctionName . 'Optimizer';
                 if (!class_exists($className, false)) {
                     throw new \Exception('Class ' . $className . ' cannot be loaded');
                 }
                 $optimizer = new $className();
                 if (!$optimizer instanceof OptimizerAbstract) {
                     throw new \Exception('Class ' . $className . ' must be instance of OptimizerAbstract');
                 }
                 break;
             }
         }
         self::$_optimizers[$funcName] = $optimizer;
     } else {
         $optimizer = self::$_optimizers[$funcName];
     }
     if ($optimizer) {
         return $optimizer->optimize($expression, $call, $compilationContext);
     }
     return false;
 }

//.........这里部分代码省略.........
                     }
                     break;
                 default:
                     throw new CompilerException("Default parameter value type: " . $parameter['default']['type'] . " cannot be assigned to variable(bool)", $parameter);
             }
             break;
         case 'string':
             $compilationContext->symbolTable->mustGrownStack(true);
             $compilationContext->headersManager->add('kernel/memory');
             switch ($parameter['default']['type']) {
                 case 'static-constant-access':
                     /**
                      * Now I can write code for easy use on Expression because code in this method don't write with codePrinter ;(
                      * @todo Rewrite all to codePrinter
                      */
                     $symbolVariable = $compilationContext->symbolTable->getVariableForWrite($parameter['name'], $compilationContext, $parameter['default']);
                     $expression = new Expression($parameter['default']);
                     $expression->setExpectReturn(true, $symbolVariable);
                     $compiledExpression = $expression->compile($compilationContext);
                     if ($compiledExpression->getType() != 'string') {
                         throw new CompilerException("Default parameter value type: " . $compiledExpression->getType() . " cannot be assigned to variable(string)", $parameter);
                     }
                     $parameter['default']['type'] = $compiledExpression->getType();
                     $parameter['default']['value'] = $compiledExpression->getCode();
                     $compilationContext->codePrinter = $oldCodePrinter;
                     return $this->assignDefaultValue($parameter, $compilationContext);
                     break;
                 case 'null':
                     $compilationContext->backend->initVar($paramVariable, $compilationContext);
                     $compilationContext->backend->assignString($paramVariable, null, $compilationContext);
                     break;
                 case 'string':
                     $compilationContext->backend->initVar($paramVariable, $compilationContext);
                     $compilationContext->backend->assignString($paramVariable, Utils::addSlashes($parameter['default']['value'], true), $compilationContext);
                     break;
                 default:
                     throw new CompilerException("Default parameter value type: " . $parameter['default']['type'] . " cannot be assigned to variable(string)", $parameter);
             }
             break;
         case 'array':
             $compilationContext->symbolTable->mustGrownStack(true);
             $compilationContext->headersManager->add('kernel/memory');
             switch ($parameter['default']['type']) {
                 case 'null':
                     $compilationContext->backend->initVar($paramVariable, $compilationContext);
                     $compilationContext->backend->initArray($paramVariable, $compilationContext, null);
                     break;
                 case 'empty-array':
                 case 'array':
                     $compilationContext->backend->initVar($paramVariable, $compilationContext);
                     $compilationContext->backend->initArray($paramVariable, $compilationContext, null);
                     break;
                 default:
                     throw new CompilerException("Default parameter value type: " . $parameter['default']['type'] . " cannot be assigned to variable(array)", $parameter);
             }
             break;
         case 'variable':
             $symbolVariable = $compilationContext->symbolTable->getVariableForWrite($parameter['name'], $compilationContext, $parameter['default']);
             switch ($parameter['default']['type']) {
                 case 'static-constant-access':
                     /**
                      * Now I can write code for easy use on Expression because code in this method don't write with codePrinter ;(
                      * @todo Rewrite all to codePrinter
                      */
                     $expression = new Expression($parameter['default']);
                     $expression->setExpectReturn(true, $symbolVariable);

 /**
  * Throws an exception escaping the data
  *
  * @param CodePrinter $printer
  * @param string $class
  * @param string $message
  * @param array $expression
  */
 private function throwStringException(CodePrinter $printer, $class, $message, $expression)
 {
     $message = Utils::addSlashes($message);
     $path = Compiler::getShortUserPath($expression['file']);
     $printer->output(sprintf('ZEPHIR_THROW_EXCEPTION_DEBUG_STR(%s, "%s", "%s", %s);', $class, $message, $path, $expression['line']));
     $printer->output('return;');
 }

 /**
  * Resolve parameters using zvals in the stack and without allocating memory for constants
  *
  * @param array $parameters
  * @param CompilationContext $compilationContext
  * @param array $expression
  * @return array
  */
 public function getReadOnlyResolvedParams($parameters, CompilationContext $compilationContext, array $expression)
 {
     $codePrinter = $compilationContext->codePrinter;
     $exprParams = $this->getResolvedParamsAsExpr($parameters, $compilationContext, $expression, true);
     $params = array();
     $types = array();
     $dynamicTypes = array();
     foreach ($exprParams as $compiledExpression) {
         $expression = $compiledExpression->getOriginal();
         switch ($compiledExpression->getType()) {
             case 'null':
                 $params[] = 'ZEPHIR_GLOBAL(global_null)';
                 $types[] = 'null';
                 $dynamicTypes[] = 'null';
                 break;
             case 'int':
             case 'uint':
             case 'long':
                 $parameterVariable = $compilationContext->symbolTable->getTempLocalVariableForWrite('variable', $compilationContext, $expression);
                 $codePrinter->output('ZVAL_LONG(&' . $parameterVariable->getName() . ', ' . $compiledExpression->getCode() . ');');
                 $this->_temporalVariables[] = $parameterVariable;
                 $params[] = '&' . $parameterVariable->getName();
                 $types[] = $parameterVariable->getType();
                 $dynamicTypes[] = $parameterVariable->getType();
                 break;
             case 'char':
             case 'uchar':
                 $parameterVariable = $compilationContext->symbolTable->getTempLocalVariableForWrite('variable', $compilationContext, $expression);
                 $codePrinter->output('ZVAL_LONG(&' . $parameterVariable->getName() . ', \'' . $compiledExpression->getCode() . '\');');
                 $this->_temporalVariables[] = $parameterVariable;
                 $params[] = '&' . $parameterVariable->getName();
                 $types[] = $parameterVariable->getType();
                 $dynamicTypes[] = $parameterVariable->getType();
                 break;
             case 'double':
                 $parameterVariable = $compilationContext->symbolTable->getTempLocalVariableForWrite('variable', $compilationContext, $expression);
                 $codePrinter->output('ZVAL_DOUBLE(&' . $parameterVariable->getName() . ', ' . $compiledExpression->getCode() . ');');
                 $this->_temporalVariables[] = $parameterVariable;
                 $params[] = '&' . $parameterVariable->getName();
                 $types[] = $parameterVariable->getType();
                 $dynamicTypes[] = $parameterVariable->getType();
                 break;
             case 'bool':
                 if ($compiledExpression->getCode() == 'true') {
                     $params[] = 'ZEPHIR_GLOBAL(global_true)';
                 } else {
                     if ($compiledExpression->getCode() == 'false') {
                         $params[] = 'ZEPHIR_GLOBAL(global_false)';
                     } else {
                         throw new Exception('?');
                     }
                 }
                 $types[] = 'bool';
                 $dynamicTypes[] = 'bool';
                 break;
             case 'ulong':
             case 'string':
             case 'istring':
                 $parameterVariable = $compilationContext->symbolTable->getTempLocalVariableForWrite('variable', $compilationContext, $expression);
                 $codePrinter->output('ZVAL_STRING(&' . $parameterVariable->getName() . ', "' . Utils::addSlashes($compiledExpression->getCode()) . '", 0);');
                 $this->_temporalVariables[] = $parameterVariable;
                 $params[] = '&' . $parameterVariable->getName();
                 $types[] = $parameterVariable->getType();
                 $dynamicTypes[] = $parameterVariable->getType();
                 break;
             case 'array':
                 $parameterVariable = $compilationContext->symbolTable->getVariableForRead($compiledExpression->getCode(), $compilationContext, $expression);
                 $params[] = $parameterVariable->getName();
                 $types[] = $parameterVariable->getType();
                 $dynamicTypes[] = $parameterVariable->getType();
                 break;
             case 'variable':
                 $parameterVariable = $compilationContext->symbolTable->getVariableForRead($compiledExpression->getCode(), $compilationContext, $expression);
                 switch ($parameterVariable->getType()) {
                     case 'int':
                     case 'uint':
                     case 'long':
                     case 'ulong':
                         $parameterTempVariable = $compilationContext->symbolTable->getTempLocalVariableForWrite('variable', $compilationContext, $expression);
                         $codePrinter->output('ZVAL_LONG(&' . $parameterTempVariable->getName() . ', ' . $compiledExpression->getCode() . ');');
                         $params[] = '&' . $parameterTempVariable->getName();
                         $types[] = $parameterVariable->getType();
                         $dynamicTypes[] = $parameterVariable->getType();
                         $this->_temporalVariables[] = $parameterTempVariable;
                         break;
                     case 'char':
                     case 'uchar':
                         $parameterTempVariable = $compilationContext->symbolTable->getTempLocalVariableForWrite('variable', $compilationContext, $expression);
                         $codePrinter->output('ZVAL_LONG(&' . $parameterTempVariable->getName() . ', ' . $compiledExpression->getCode() . ');');
                         $params[] = '&' . $parameterTempVariable->getName();
                         $types[] = $parameterVariable->getType();
                         $dynamicTypes[] = $parameterVariable->getType();
//.........这里部分代码省略.........

 /**
  * Resolves the access to a property in an object
  *
  * @param array $expression
  * @param CompilationContext $compilationContext
  * @return \CompiledExpression
  */
 public function compile($expression, CompilationContext $compilationContext)
 {
     $codePrinter = $compilationContext->codePrinter;
     $propertyAccess = $expression;
     $expr = new Expression($propertyAccess['left']);
     $exprVariable = $expr->compile($compilationContext);
     switch ($exprVariable->getType()) {
         case 'variable':
             $variableVariable = $compilationContext->symbolTable->getVariableForRead($exprVariable->getCode(), $compilationContext, $expression);
             switch ($variableVariable->getType()) {
                 case 'variable':
                     break;
                 default:
                     throw new CompilerException("Variable type: " . $variableVariable->getType() . " cannot be used as object", $propertyAccess['left']);
             }
             break;
         default:
             throw new CompilerException("Cannot use expression: " . $exprVariable->getType() . " as an object", $propertyAccess['left']);
     }
     switch ($propertyAccess['right']['type']) {
         case 'variable':
             $propertyVariable = $compilationContext->symbolTable->getVariableForRead($propertyAccess['right']['value'], $compilationContext, $expression);
             break;
         case 'string':
             $propertyVariable = null;
             break;
         default:
             throw new CompilerException("Variable type: " . $propertyAccess['right']['type'] . " cannot be used as object", $propertyAccess['left']);
     }
     /**
      * Resolves the symbol that expects the value
      */
     if ($this->_expecting) {
         if ($this->_expectingVariable) {
             $symbolVariable = $this->_expectingVariable;
             if ($symbolVariable->getName() != 'return_value') {
                 $symbolVariable->observeVariant($compilationContext);
             } else {
                 $symbolVariable = $compilationContext->symbolTable->getTempVariableForObserve('variable', $compilationContext, $expression);
             }
         } else {
             $symbolVariable = $compilationContext->symbolTable->getTempVariableForObserve('variable', $compilationContext, $expression);
         }
     }
     /**
      * Variable that receives a property value must be polymorphic
      */
     if ($symbolVariable && !$symbolVariable->isVariable()) {
         throw new CompilerException("Cannot use variable: " . $symbolVariable->getType() . " to assign property value", $expression);
     }
     /**
      * At this point, we don't know the exact dynamic type fetched from the property
      */
     $symbolVariable->setDynamicTypes('undefined');
     $compilationContext->headersManager->add('kernel/object');
     $property = $propertyVariable ? $propertyVariable : Utils::addSlashes($expression['right']['value']);
     $compilationContext->backend->fetchProperty($symbolVariable, $variableVariable, $property, false, $compilationContext, false);
     return new CompiledExpression('variable', $symbolVariable->getRealName(), $expression);
 }

 /**
  * @param CompilationContext $compilationContext
  * @throws CompilerException
  */
 public function compile(CompilationContext $compilationContext)
 {
     foreach ($this->_statement['expressions'] as $echoExpr) {
         $expr = new Expression($echoExpr);
         $expr->setReadOnly(true);
         $resolvedExpr = $expr->compile($compilationContext);
         switch ($resolvedExpr->getType()) {
             case 'int':
                 $compilationContext->codePrinter->output('php_printf("%d", ' . $resolvedExpr->getCode() . ');');
                 break;
             case 'bool':
                 $compilationContext->codePrinter->output('php_printf("%s", ' . $resolvedExpr->getBooleanCode() . ' ? "1": "");');
                 break;
             case 'double':
                 $compilationContext->codePrinter->output('php_printf("%f", ' . $resolvedExpr->getCode() . ');');
                 break;
             case 'char':
             case 'uchar':
                 $compilationContext->codePrinter->output('php_printf("%c", \'' . $resolvedExpr->getCode() . '\');');
                 break;
             case 'long':
                 $compilationContext->codePrinter->output('php_printf("%ld", ' . $resolvedExpr->getCode() . ');');
                 break;
             case 'string':
                 $compilationContext->codePrinter->output('php_printf("' . Utils::addSlashes($resolvedExpr->getCode()) . '");');
                 break;
             case 'null':
                 break;
             case 'variable':
                 $variable = $compilationContext->symbolTable->getVariableForRead($resolvedExpr->getCode(), $compilationContext, $echoExpr);
                 switch ($variable->getType()) {
                     case 'int':
                         $compilationContext->codePrinter->output('php_printf("%d", ' . $variable->getName() . ');');
                         break;
                     case 'long':
                         $compilationContext->codePrinter->output('php_printf("%ld", ' . $variable->getName() . ');');
                         break;
                     case 'double':
                         $compilationContext->codePrinter->output('php_printf("%f", ' . $variable->getName() . ');');
                         break;
                     case 'uchar':
                     case 'char':
                         $compilationContext->codePrinter->output('php_printf("%c", ' . $variable->getName() . ');');
                         break;
                     case 'bool':
                         $compilationContext->codePrinter->output('php_printf("%s", ' . $variable->getName() . ' ? "1": "");');
                         break;
                     case 'string':
                     case 'variable':
                         $compilationContext->codePrinter->output('zend_print_zval(' . $variable->getName() . ', 0);');
                         break;
                     case 'null':
                         break;
                     default:
                         throw new CompilerException("Unknown type: " . $variable->getType(), $echoExpr);
                 }
                 break;
             default:
                 throw new CompilerException("Unknown type: " . $resolvedExpr->getType(), $echoExpr);
         }
     }
 }