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C++ ConstantTablePtr::isDynamic方法代码示例

本文整理汇总了C++中ConstantTablePtr::isDynamic方法的典型用法代码示例。如果您正苦于以下问题:C++ ConstantTablePtr::isDynamic方法的具体用法?C++ ConstantTablePtr::isDynamic怎么用?C++ ConstantTablePtr::isDynamic使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在ConstantTablePtr的用法示例。


在下文中一共展示了ConstantTablePtr::isDynamic方法的2个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: inferAndCheck

TypePtr SimpleFunctionCall::inferAndCheck(AnalysisResultPtr ar, TypePtr type,
                                          bool coerce) {
  reset();

  ConstructPtr self = shared_from_this();

  // handling define("CONSTANT", ...);
  if (m_className.empty()) {
    if (m_type == DefineFunction && m_params && m_params->getCount() >= 2) {
      ScalarExpressionPtr name =
        dynamic_pointer_cast<ScalarExpression>((*m_params)[0]);
      string varName;
      if (name) {
        varName = name->getIdentifier();
        if (!varName.empty()) {
          ExpressionPtr value = (*m_params)[1];
          TypePtr varType = value->inferAndCheck(ar, NEW_TYPE(Some), false);
          ar->getDependencyGraph()->
            addParent(DependencyGraph::KindOfConstant,
                      ar->getName(), varName, self);
          ConstantTablePtr constants =
            ar->findConstantDeclarer(varName)->getConstants();
          if (constants != ar->getConstants()) {
            if (value && !value->isScalar()) {
              constants->setDynamic(ar, varName);
              varType = Type::Variant;
            }
            if (constants->isDynamic(varName)) {
              m_dynamicConstant = true;
              ar->getScope()->getVariables()->
                setAttribute(VariableTable::NeedGlobalPointer);
            } else {
              constants->setType(ar, varName, varType, true);
            }
            // in case the old 'value' has been optimized
            constants->setValue(ar, varName, value);
          }
          return checkTypesImpl(ar, type, Type::Boolean, coerce);
        }
      }
      if (varName.empty() && ar->isFirstPass()) {
        ar->getCodeError()->record(self, CodeError::BadDefine, self);
      }
    } else if (m_type == ExtractFunction) {
      ar->getScope()->getVariables()->forceVariants(ar);
    }
  }

  FunctionScopePtr func;

  // avoid raising both MissingObjectContext and UnknownFunction
  bool errorFlagged = false;

  if (m_className.empty()) {
    func = ar->findFunction(m_name);
  } else {
    ClassScopePtr cls = ar->resolveClass(m_className);
    if (cls && cls->isVolatile()) {
      ar->getScope()->getVariables()
        ->setAttribute(VariableTable::NeedGlobalPointer);
    }
    if (!cls || cls->isRedeclaring()) {
      if (cls) {
        m_redeclaredClass = true;
      }
      if (!cls && ar->isFirstPass()) {
        ar->getCodeError()->record(self, CodeError::UnknownClass, self);
      }
      if (m_params) {
        m_params->inferAndCheck(ar, NEW_TYPE(Some), false);
      }
      return checkTypesImpl(ar, type, Type::Variant, coerce);
    }
    m_derivedFromRedeclaring = cls->derivesFromRedeclaring();
    m_validClass = true;

    if (m_name == "__construct") {
      // if the class is known, php will try to identify class-name ctor
      func = cls->findConstructor(ar, true);
    }
    else {
      func = cls->findFunction(ar, m_name, true, true);
    }

    if (func && !func->isStatic()) {
      ClassScopePtr clsThis = ar->getClassScope();
      FunctionScopePtr funcThis = ar->getFunctionScope();
      if (!clsThis ||
          (clsThis->getName() != m_className &&
           !clsThis->derivesFrom(ar, m_className)) ||
          funcThis->isStatic()) {
        // set the method static to avoid "unknown method" runtime exception
        if (Option::StaticMethodAutoFix && !func->containsThis()) {
          func->setStatic();
        }
        if (ar->isFirstPass()) {
          ar->getCodeError()->record(self, CodeError::MissingObjectContext,
                                     self);
          errorFlagged = true;
        }
//.........这里部分代码省略.........
开发者ID:scottmac,项目名称:hiphop-dev,代码行数:101,代码来源:simple_function_call.cpp

示例2: preOptimize

ExpressionPtr SimpleFunctionCall::preOptimize(AnalysisResultPtr ar) {
  ar->preOptimize(m_nameExp);
  ar->preOptimize(m_params);
  if (ar->getPhase() != AnalysisResult::SecondPreOptimize) {
    return ExpressionPtr();
  }
  // optimize away various "exists" functions, this may trigger
  // dead code elimination and improve type-inference.
  if (m_className.empty() &&
      (m_type == DefinedFunction ||
       m_type == FunctionExistsFunction ||
       m_type == ClassExistsFunction ||
       m_type == InterfaceExistsFunction) &&
      m_params && m_params->getCount() == 1) {
    ExpressionPtr value = (*m_params)[0];
    if (value->isScalar()) {
      ScalarExpressionPtr name = dynamic_pointer_cast<ScalarExpression>(value);
      if (name && name->isLiteralString()) {
        string symbol = name->getLiteralString();
        switch (m_type) {
        case DefinedFunction: {
          ConstantTablePtr constants = ar->getConstants();
          // system constant
          if (constants->isPresent(symbol)) {
            return CONSTANT("true");
          }
          // user constant
          BlockScopePtr block = ar->findConstantDeclarer(symbol);
          // not found (i.e., undefined)
          if (!block) {
            if (symbol.find("::") == std::string::npos) {
              return CONSTANT("false");
            } else {
              // e.g., defined("self::ZERO")
              return ExpressionPtr();
            }
          }
          constants = block->getConstants();
          // already set to be dynamic
          if (constants->isDynamic(symbol)) return ExpressionPtr();
          ConstructPtr decl = constants->getValue(symbol);
          ExpressionPtr constValue = dynamic_pointer_cast<Expression>(decl);
          if (constValue->isScalar()) {
            return CONSTANT("true");
          } else {
            return ExpressionPtr();
          }
          break;
        }
        case FunctionExistsFunction: {
          const std::string &lname = Util::toLower(symbol);
          if (Option::DynamicInvokeFunctions.find(lname) ==
              Option::DynamicInvokeFunctions.end()) {
            FunctionScopePtr func = ar->findFunction(lname);
            if (!func) {
              return CONSTANT("false");
            } else if (!func->isVolatile()) {
              return CONSTANT("true");
            }
          }
          break;
        }
        case InterfaceExistsFunction: {
          ClassScopePtr cls = ar->findClass(Util::toLower(symbol));
          if (!cls || !cls->isInterface()) {
            return CONSTANT("false");
          } else if (!cls->isVolatile()) {
            return CONSTANT("true");
          }
          break;
        }
        case ClassExistsFunction: {
          ClassScopePtr cls = ar->findClass(Util::toLower(symbol));
          if (!cls || cls->isInterface()) {
            return CONSTANT("false");
          } else if (!cls->isVolatile()) {
            return CONSTANT("true");
          }
          break;
        }
        default:
          ASSERT(false);
        }
      }
    }
  }
  return ExpressionPtr();
}
开发者ID:scottmac,项目名称:hiphop-dev,代码行数:88,代码来源:simple_function_call.cpp


注:本文中的ConstantTablePtr::isDynamic方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。