C++ FunctionScopePtr::isRedeclaring方法代码示例

void SimpleFunctionCall::outputCPPImpl(CodeGenerator &cg,
                                       AnalysisResultPtr ar) {
  bool linemap = outputLineMap(cg, ar, true);

  if (!m_lambda.empty()) {
    cg.printf("\"%s\"", m_lambda.c_str());
    if (linemap) cg.printf(")");
    return;
  }

  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();
        ExpressionPtr value = (*m_params)[1];
        if (varName.empty()) {
          cg.printf("throw_fatal(\"bad define\")");
        } else if (m_dynamicConstant) {
          cg.printf("g->declareConstant(\"%s\", g->%s%s, ",
                    varName.c_str(), Option::ConstantPrefix,
                    varName.c_str());
          value->outputCPP(cg, ar);
          cg.printf(")");
        } else {
          bool needAssignment = true;
          bool isSystem = ar->getConstants()->isSystem(varName);
          if (isSystem ||
              ((!ar->isConstantRedeclared(varName)) && value->isScalar())) {
            needAssignment = false;
          }
          if (needAssignment) {
            cg.printf("%s%s = ", Option::ConstantPrefix, varName.c_str());
            value->outputCPP(cg, ar);
          }
        }
      } else {
        cg.printf("throw_fatal(\"bad define\")");
      }
      if (linemap) cg.printf(")");
      return;
    }
    if (m_name == "func_num_args") {
      cg.printf("num_args");
      if (linemap) cg.printf(")");
      return;
    }

    switch (m_type) {
    case VariableArgumentFunction:
      {
        FunctionScopePtr func =
          dynamic_pointer_cast<FunctionScope>(ar->getScope());
        if (func) {
          cg.printf("%s(", m_name.c_str());
          func->outputCPPParamsCall(cg, ar, true);
          if (m_params) {
            cg.printf(",");
            m_params->outputCPP(cg, ar);
          }
          cg.printf(")");
          if (linemap) cg.printf(")");
          return;
        }
      }
      break;
    case FunctionExistsFunction:
    case ClassExistsFunction:
    case InterfaceExistsFunction:
      {
        bool literalString = false;
        string symbol;
        if (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()) {
              literalString = true;
              symbol = name->getLiteralString();
            }
          }
        }
        if (literalString) {
          switch (m_type) {
          case FunctionExistsFunction:
            {
              const std::string &lname = Util::toLower(symbol);
              bool dynInvoke = Option::DynamicInvokeFunctions.find(lname) !=
                Option::DynamicInvokeFunctions.end();
              if (!dynInvoke) {
                FunctionScopePtr func = ar->findFunction(lname);
                if (func) {
                  if (!func->isDynamic()) {
                    if (func->isRedeclaring()) {
                      const char *name = func->getName().c_str();
                      cg.printf("(%s->%s%s != invoke_failed_%s)",
                                cg.getGlobals(ar), Option::InvokePrefix,
//.........这里部分代码省略.........

void SimpleFunctionCall::analyzeProgram(AnalysisResultPtr ar) {
  if (m_className.empty()) {
    addUserFunction(ar, m_name);
  } else if (m_className != "parent") {
    addUserClass(ar, m_className);
  } else {
    m_parentClass = true;
  }

  if (ar->getPhase() == AnalysisResult::AnalyzeInclude) {

    CHECK_HOOK(onSimpleFunctionCallAnalyzeInclude);

    ConstructPtr self = shared_from_this();

    // We need to know the name of the constant so that we can associate it
    // with this file before we do type inference.
    if (m_className.empty() && m_type == DefineFunction) {
      ScalarExpressionPtr name =
        dynamic_pointer_cast<ScalarExpression>((*m_params)[0]);
      string varName;
      if (name) {
        varName = name->getIdentifier();
        if (!varName.empty()) {
          ar->getFileScope()->declareConstant(ar, varName);
        }
      }
      // handling define("CONSTANT", ...);
      if (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];
            ConstantTablePtr constants =
              ar->findConstantDeclarer(varName)->getConstants();
            if (constants != ar->getConstants()) {
              constants->add(varName, NEW_TYPE(Some), value, ar, self);

              if (name->hasHphpNote("Dynamic")) {
                constants->setDynamic(ar, varName);
              }
            }
          }
        }
      }
    }

    if (m_type == UnserializeFunction) {
      ar->forceClassVariants();
    }
  }

  if (ar->getPhase() == AnalysisResult::AnalyzeAll) {
    // Look up the corresponding FunctionScope and ClassScope
    // for this function call
    {
      FunctionScopePtr func;
      ClassScopePtr cls;
      if (m_className.empty()) {
        func = ar->findFunction(m_name);
      } else {
        cls = ar->resolveClass(m_className);
        if (cls) {
          if (m_name == "__construct") {
            func = cls->findConstructor(ar, true);
          } else {
            func = cls->findFunction(ar, m_name, true, true);
          }
        }
      }
      if (func && !func->isRedeclaring()) {
        if (m_funcScope != func) {
          m_funcScope = func;
          Construct::recomputeEffects();
        }
      }
      if (cls && !cls->isRedeclaring())
        m_classScope = cls;
    }
    // check for dynamic constant and volatile function/class
    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();
            if (!constants->isPresent(symbol)) {
              // user constant
//.........这里部分代码省略.........

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.........

void FunctionStatement::outputCPPImpl(CodeGenerator &cg,
                                      AnalysisResultPtr ar) {
  CodeGenerator::Context context = cg.getContext();

  FunctionScopePtr funcScope = m_funcScope.lock();
  string fname = funcScope->getId(cg).c_str();
  bool pseudoMain = funcScope->inPseudoMain();
  string origFuncName = !pseudoMain ? funcScope->getOriginalName() :
          ("run_init::" + funcScope->getFileScope()->getName());
  string funcSection;

  if (outputFFI(cg, ar)) return;

  if (context == CodeGenerator::NoContext) {
    string rname = cg.formatLabel(m_name);
    if (funcScope->isRedeclaring()) {
      cg.printf("g->%s%s = &%s%s;\n", Option::CallInfoPrefix, m_name.c_str(),
          Option::CallInfoPrefix, fname.c_str());
    }
    if (funcScope->isVolatile()) {
      cg_printf("g->declareFunctionLit(");
      cg_printString(m_name, ar);
      cg_printf(");\n");
      cg_printf("g->FVF(%s) = true;\n", rname.c_str());
    }
    return;
  }

  if (context == CodeGenerator::CppDeclaration &&
      !funcScope->isInlined()) return;

  if (context == CodeGenerator::CppPseudoMain &&
      !pseudoMain) return;
  if (context == CodeGenerator::CppImplementation &&
      (funcScope->isInlined() || pseudoMain)) return;
  ar->pushScope(funcScope);

  cg.setPHPLineNo(-1);

  if (pseudoMain && !Option::GenerateCPPMain) {
    if (context == CodeGenerator::CppPseudoMain) {
      if (cg.getOutput() != CodeGenerator::SystemCPP) {
        cg.setContext(CodeGenerator::NoContext); // no inner functions/classes
        funcScope->getVariables()->setAttribute(VariableTable::ForceGlobal);
        outputCPPStmt(cg, ar);
        funcScope->getVariables()->clearAttribute(VariableTable::ForceGlobal);
        cg.setContext(CodeGenerator::CppPseudoMain);
        ar->popScope();
        return;
      }
    } else if (context == CodeGenerator::CppForwardDeclaration &&
               cg.getOutput() != CodeGenerator::SystemCPP) {
      return;
    }
  }

  if (context == CodeGenerator::CppImplementation) {
    printSource(cg);
  } else if (context == CodeGenerator::CppForwardDeclaration &&
             Option::GenerateCppLibCode) {
    cg_printf("\n");
    printSource(cg);
    cg.printDocComment(funcScope->getDocComment());
  }

  if (funcScope->isInlined()) cg_printf("inline ");

  TypePtr type = funcScope->getReturnType();
  if (type) {
    type->outputCPPDecl(cg, ar);
  } else {
    cg_printf("void");
  }

  funcSection = Option::FunctionSections[origFuncName];
  if (!funcSection.empty()) {
    cg_printf(" __attribute__ ((section (\".text.%s\")))",
              funcSection.c_str());
  }

  if (pseudoMain) {
    cg_printf(" %s%s(", Option::PseudoMainPrefix,
              funcScope->getFileScope()->pseudoMainName().c_str());
  } else {
    cg_printf(" %s%s(", Option::FunctionPrefix, fname.c_str());
  }

  switch (context) {
  case CodeGenerator::CppForwardDeclaration:
    funcScope->outputCPPParamsDecl(cg, ar, m_params, true);
    cg_printf(");\n");
    if (funcScope->hasDirectInvoke()) {
      cg_printf("Variant %s%s(void *extra, CArrRef params);\n",
                Option::InvokePrefix, fname.c_str());
    }
    break;
  case CodeGenerator::CppDeclaration:
  case CodeGenerator::CppImplementation:
  case CodeGenerator::CppPseudoMain:
    {
//.........这里部分代码省略.........