C++ AnalysisResultPtr::getFileScope方法代码示例

void ClassStatement::onParse(AnalysisResultPtr ar) {
  ClassScope::KindOf kindOf = ClassScope::KindOfObjectClass;
  switch (m_type) {
  case T_CLASS:     kindOf = ClassScope::KindOfObjectClass;   break;
  case T_ABSTRACT:  kindOf = ClassScope::KindOfAbstractClass; break;
  case T_FINAL:     kindOf = ClassScope::KindOfFinalClass;    break;
  default:
    ASSERT(false);
  }

  vector<string> bases;
  if (!m_parent.empty()) {
    bases.push_back(m_parent);
    ar->addNonFinal(m_parent);
  }
  if (m_base) m_base->getStrings(bases);
  StatementPtr stmt = dynamic_pointer_cast<Statement>(shared_from_this());
  ClassScopePtr classScope(new ClassScope(kindOf, m_originalName, m_parent,
                                          bases, m_docComment,
                                          stmt, ar->getFileScope()));
  m_classScope = classScope;
  if (!ar->getFileScope()->addClass(ar, classScope)) {
    m_ignored = true;
    return;
  }
  ar->recordClassSource(m_name, ar->getFileScope()->getName());

  if (m_stmt) {
    ar->pushScope(classScope);
    bool seenConstruct = false;
    for (int i = 0; i < m_stmt->getCount(); i++) {
      MethodStatementPtr meth =
        dynamic_pointer_cast<MethodStatement>((*m_stmt)[i]);
      if (meth && meth->getName() == "__construct") {
        seenConstruct = true;
        break;
      }
    }
    for (int i = 0; i < m_stmt->getCount(); i++) {
      if (!seenConstruct) {
        MethodStatementPtr meth =
          dynamic_pointer_cast<MethodStatement>((*m_stmt)[i]);
        if (meth && classScope && meth->getName() == classScope->getName()
         && !meth->getModifiers()->isStatic()) {
          // class-name constructor
          classScope->setAttribute(ClassScope::classNameConstructor);
        }
      }
      IParseHandlerPtr ph = dynamic_pointer_cast<IParseHandler>((*m_stmt)[i]);
      ph->onParse(ar);
    }
    ar->popScope();
  }
}

void UnaryOpExpression::onParse(AnalysisResultPtr ar) {
    if (m_op == T_EVAL) {
        ConstructPtr self = shared_from_this();
        ar->getCodeError()->record(self, CodeError::UseEvaluation, self);
        ar->getFileScope()->setAttribute(FileScope::ContainsLDynamicVariable);
    }
}

void IncludeExpression::analyzeInclude(AnalysisResultPtr ar,
                                       const std::string &include) {
  ASSERT(ar->getPhase() == AnalysisResult::AnalyzeInclude);
  ConstructPtr self = shared_from_this();
  FileScopePtr file = ar->findFileScope(include, true);
  if (!file) {
    ar->getCodeError()->record(self, CodeError::PHPIncludeFileNotFound, self);
    return;
  }
  if (include.find("compiler/") != 0 ||
      include.find("/compiler/") == string::npos) {
    ar->getCodeError()->record(self, CodeError::PHPIncludeFileNotInLib,
                               self, ConstructPtr(),
                               include.c_str());
  }

  if (!isFileLevel()) { // Not unsupported but potentially bad
    ar->getCodeError()->record(self, CodeError::UseDynamicInclude, self);
  }

  ar->getDependencyGraph()->add
    (DependencyGraph::KindOfProgramMaxInclude,
     ar->getName(), file->getName(), StatementPtr());
  ar->getDependencyGraph()->addParent
    (DependencyGraph::KindOfProgramMinInclude,
     ar->getName(), file->getName(), StatementPtr());
  FunctionScopePtr func = ar->getFunctionScope();
  ar->getFileScope()->addIncludeDependency(ar, m_include,
                                           func && func->isInlined());
}

int CodeGenerator::createNewId(AnalysisResultPtr ar) {
  FileScopePtr fs = ar->getFileScope();
  if (fs) {
    return createNewId(fs->getName());
  }
  return createNewId("");
}

void SimpleFunctionCall::onParse(AnalysisResultPtr ar) {
    if (m_class) return;

    FileScopePtr fs = ar->getFileScope();
    ConstructPtr self = shared_from_this();
    if (m_className.empty()) {
        CodeErrorPtr codeError = ar->getCodeError();
        switch (m_type) {
        case CreateFunction:
            if (m_params->getCount() == 2 &&
                    (*m_params)[0]->isLiteralString() &&
                    (*m_params)[1]->isLiteralString()) {
                FunctionScopePtr func = ar->getFunctionScope();
                if (func) func->disableInline();
                string params = (*m_params)[0]->getLiteralString();
                string body = (*m_params)[1]->getLiteralString();
                m_lambda = CodeGenerator::GetNewLambda();
                string code = "function " + m_lambda + "(" + params + ") "
                              "{" + body + "}";
                ar->appendExtraCode(code);
            }
            break;
        case VariableArgumentFunction:
            ar->getFileScope()->setAttribute(FileScope::VariableArgument);
            break;
        case ExtractFunction:
            ar->getCodeError()->record(self, CodeError::UseExtract, self);
            ar->getFileScope()->setAttribute(FileScope::ContainsLDynamicVariable);
            ar->getFileScope()->setAttribute(FileScope::ContainsExtract);
            break;
        case CompactFunction:
            ar->getFileScope()->setAttribute(FileScope::ContainsDynamicVariable);
            ar->getFileScope()->setAttribute(FileScope::ContainsCompact);
            break;
        case ShellExecFunction:
            ar->getCodeError()->record(self, CodeError::UseShellExec, self);
            break;
        case GetDefinedVarsFunction:
            ar->getFileScope()->setAttribute(FileScope::ContainsGetDefinedVars);
            ar->getFileScope()->setAttribute(FileScope::ContainsCompact);
            break;
        default:
            CHECK_HOOK(onSimpleFunctionCallFuncType);
            break;
        }
    }

    string call = getText();
    string name = m_name;
    if (!m_className.empty()) {
        name = m_className + "::" + name;
    }
    ar->getDependencyGraph()->add(DependencyGraph::KindOfFunctionCall, call,
                                  shared_from_this(), name);
}

TypePtr AssignmentExpression::
inferTypesImpl(AnalysisResultPtr ar, TypePtr type, bool coerce,
               ExpressionPtr variable,
               ExpressionPtr value /* = ExpressionPtr() */) {
  TypePtr ret = type;
  if (value) {
    if (coerce) {
      ret = value->inferAndCheck(ar, type, coerce);
    } else {
      ret = value->inferAndCheck(ar, NEW_TYPE(Some), coerce);
    }
  }

  BlockScopePtr scope = ar->getScope();
  if (variable->is(Expression::KindOfConstantExpression)) {
    // ...as in ClassConstant statement
    ConstantExpressionPtr exp =
      dynamic_pointer_cast<ConstantExpression>(variable);
    bool p;
    scope->getConstants()->check(exp->getName(), ret, true, ar, variable, p);
  } else if (variable->is(Expression::KindOfDynamicVariable)) {
    // simptodo: not too sure about this
    ar->getFileScope()->setAttribute(FileScope::ContainsLDynamicVariable);
  } else if (variable->is(Expression::KindOfSimpleVariable)) {
    SimpleVariablePtr var = dynamic_pointer_cast<SimpleVariable>(variable);
    if (var->getName() == "this" && ar->getClassScope()) {
      if (ar->isFirstPass()) {
        ar->getCodeError()->record(variable, CodeError::ReassignThis,
                                   variable);
      }
    }
    if (ar->getPhase() == AnalysisResult::LastInference && value) {
      if (!value->getExpectedType()) {
        value->setExpectedType(variable->getActualType());
      }
    }
  }
  // if the value may involve object, consider the variable as "referenced"
  // so that objects are not destructed prematurely.
  bool referenced = true;
  if (value && value->isScalar()) referenced = false;
  if (ret && ret->isNoObjectInvolved()) referenced = false;
  if (referenced && variable->is(Expression::KindOfSimpleVariable)) {
    SimpleVariablePtr var =
      dynamic_pointer_cast<SimpleVariable>(variable);
    const std::string &name = var->getName();
    VariableTablePtr variables = ar->getScope()->getVariables();
    variables->addReferenced(name);
  }

  TypePtr vt = variable->inferAndCheck(ar, ret, true);
  if (!coerce && type->is(Type::KindOfAny)) {
    ret = vt;
  }

  return ret;
}

void FunctionStatement::onParse(AnalysisResultPtr ar) {
   // note it's important to add to file scope, not a pushed FunctionContainer,
  // as a function may be declared inside a class's method, yet this function
  // is a global function, not a class method.
  FileScopePtr fileScope = ar->getFileScope();
  if (!fileScope->addFunction(ar, onParseImpl(ar))) {
    m_ignored = true;
    return;
  }
  ar->recordFunctionSource(m_name, m_loc, fileScope->getName());
}

int CodeGenerator::createNewLocalId(AnalysisResultPtr ar) {
  FunctionScopePtr func = ar->getFunctionScope();
  if (func) {
    return func->nextInlineIndex();
  }
  FileScopePtr fs = ar->getFileScope();
  if (fs) {
    return createNewId(fs->getName());
  }
  return createNewId("");
}

void InterfaceStatement::onParse(AnalysisResultPtr ar) {
  vector<string> bases;
  if (m_base) m_base->getStrings(bases);

  StatementPtr stmt = dynamic_pointer_cast<Statement>(shared_from_this());
  ClassScopePtr classScope(new ClassScope(ClassScope::KindOfInterface,
                                          m_name, "", bases, m_docComment, stmt,
                                          ar->getFileScope()));
  m_classScope = classScope;
  ar->getFileScope()->addClass(ar, classScope);
  ar->getDependencyGraph()->addParent(DependencyGraph::KindOfProgramUserClass,
                                      "", m_originalName, stmt);

  if (m_stmt) {
    ar->pushScope(classScope);
    for (int i = 0; i < m_stmt->getCount(); i++) {
      IParseHandlerPtr ph = dynamic_pointer_cast<IParseHandler>((*m_stmt)[i]);
      ph->onParse(ar);
    }
    ar->popScope();
  }
}

void InterfaceStatement::analyzeProgramImpl(AnalysisResultPtr ar) {
  ClassScopePtr classScope = m_classScope.lock();
  if (hasHphpNote("Volatile")) classScope->setVolatile();
  if (m_stmt) {
    classScope->setIncludeLevel(ar->getIncludeLevel());
    ar->pushScope(classScope);
    m_stmt->analyzeProgram(ar);
    ar->popScope();
  }
  ar->recordClassSource(m_name, ar->getFileScope()->getName());

  checkVolatile(ar);

  if (ar->getPhase() != AnalysisResult::AnalyzeAll) return;
  vector<string> bases;
  if (m_base) m_base->getStrings(bases);
  DependencyGraphPtr dependencies = ar->getDependencyGraph();
  for (unsigned int i = 0; i < bases.size(); i++) {
    ClassScopePtr cls = ar->findClass(bases[i]);
    if (cls) {
      if (!cls->isInterface()) {
        ar->getCodeError()->record(CodeError::InvalidDerivation,
                                   shared_from_this(), ConstructPtr(),
                                   cls->getOriginalName());
      }
      if (dependencies->checkCircle(DependencyGraph::KindOfClassDerivation,
                                    m_originalName,
                                    cls->getOriginalName())) {
        ClassScopePtr classScope = m_classScope.lock();
        ar->getCodeError()->record(CodeError::InvalidDerivation,
                                   shared_from_this(), ConstructPtr(),
                                   cls->getOriginalName());
        m_base = ExpressionListPtr();
        classScope->clearBases();
      } else if (cls->isUserClass()) {
        dependencies->add(DependencyGraph::KindOfClassDerivation,
                          ar->getName(),
                          m_originalName, shared_from_this(),
                          cls->getOriginalName(), cls->getStmt());
      }
    }
  }
}

FunctionScopePtr MethodStatement::onParseImpl(AnalysisResultPtr ar) {
  int minParam, maxParam;
  ConstructPtr self = shared_from_this();
  minParam = maxParam = 0;
  bool hasRef = false;
  if (m_params) {
    set<string> names;
    int i = 0;
    maxParam = m_params->getCount();
    for (; i < maxParam; i++) {
      ParameterExpressionPtr param =
        dynamic_pointer_cast<ParameterExpression>((*m_params)[i]);
      if (param->isRef()) hasRef = true;
      if (param->isOptional()) break;
      minParam++;
    }
    for (i++; i < maxParam; i++) {
      ParameterExpressionPtr param =
        dynamic_pointer_cast<ParameterExpression>((*m_params)[i]);
      if (param->isRef()) hasRef = true;
      if (!param->isOptional()) {
        ar->getCodeError()->record(self, CodeError::RequiredAfterOptionalParam,
                                   param);
        param->defaultToNull(ar);
      }
    }

    if (ar->isFirstPass()) {
      for (i = 0; i < maxParam; i++) {
        ParameterExpressionPtr param =
          dynamic_pointer_cast<ParameterExpression>((*m_params)[i]);
        if (names.find(param->getName()) == names.end()) {
          names.insert(param->getName());
        } else {
          ar->getCodeError()->record(self,
                                     CodeError::RedundantParameter, param);
          for (int j = 0; j < 1000; j++) {
            string name = param->getName() + lexical_cast<string>(j);
            if (names.find(name) == names.end()) {
              param->rename(name);
              break;
            }
          }
        }
      }
    }
  }

  if (hasRef || m_ref) {
    m_attribute |= FileScope::ContainsReference;
  }

  StatementPtr stmt = dynamic_pointer_cast<Statement>(shared_from_this());
  FunctionScopePtr funcScope
    (new FunctionScope(ar, m_method, m_name, stmt, m_ref, minParam, maxParam,
                       m_modifiers, m_attribute, m_docComment,
                       ar->getFileScope()));
  if (!m_stmt) {
    funcScope->setVirtual();
  }
  m_funcScope = funcScope;

  // TODO: this may have to expand to a concept of "virtual" functions...
  if (ar->getClassScope()) {
    funcScope->disableInline();
    if (m_name.length() > 2 && m_name.substr(0,2) == "__") {
      bool magic = true;
      int paramCount = 0;
      if (m_name == "__destruct") {
        funcScope->setOverriding(Type::Variant);
      } else if (m_name == "__call") {
        funcScope->setOverriding(Type::Variant, Type::String, Type::Array);
        paramCount = 2;
      } else if (m_name == "__set") {
        funcScope->setOverriding(Type::Variant, Type::String, Type::Variant);
        paramCount = 2;
      } else if (m_name == "__get") {
        funcScope->setOverriding(Type::Variant, Type::String);
        paramCount = 1;
      } else if (m_name == "__isset") {
        funcScope->setOverriding(Type::Boolean, Type::String);
        paramCount = 1;
      } else if (m_name == "__unset") {
        funcScope->setOverriding(Type::Variant, Type::String);
        paramCount = 1;
      } else if (m_name == "__sleep") {
        funcScope->setOverriding(Type::Variant);
      } else if (m_name == "__wakeup") {
        funcScope->setOverriding(Type::Variant);
      } else if (m_name == "__set_state") {
        funcScope->setOverriding(Type::Variant, Type::Variant);
        paramCount = 1;
      } else if (m_name == "__tostring") {
        funcScope->setOverriding(Type::String);
      } else if (m_name == "__clone") {
        funcScope->setOverriding(Type::Variant);
      } else {
        paramCount = -1;
        if (m_name != "__construct") {
          ar->getCodeError()->record(self, CodeError::UnknownMagicMethod,
//.........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.........