C++ (Cpp) hasDefaultArgument示例

示例#1

文件： ForwardingReferenceOverloadCheck.cpp 项目： kdeyev/clang-tools-extra

void ForwardingReferenceOverloadCheck::registerMatchers(MatchFinder *Finder) {
  // Forwarding references require C++11 or later.
  if (!getLangOpts().CPlusPlus11)
    return;

  auto ForwardingRefParm =
      parmVarDecl(
          hasType(qualType(rValueReferenceType(),
                           references(templateTypeParmType(hasDeclaration(
                               templateTypeParmDecl().bind("type-parm-decl")))),
                           unless(references(isConstQualified())))))
          .bind("parm-var");

  DeclarationMatcher findOverload =
      cxxConstructorDecl(
          hasParameter(0, ForwardingRefParm),
          unless(hasAnyParameter(
              // No warning: enable_if as constructor parameter.
              parmVarDecl(hasType(isEnableIf())))),
          unless(hasParent(functionTemplateDecl(has(templateTypeParmDecl(
              // No warning: enable_if as type parameter.
              hasDefaultArgument(isEnableIf())))))))
          .bind("ctor");
  Finder->addMatcher(findOverload, this);
}

示例#2

文件： DefaultArgumentsCheck.cpp 项目： ingowald/llvm-project

void DefaultArgumentsCheck::registerMatchers(MatchFinder *Finder) {
  // Calling a function which uses default arguments is disallowed.
  Finder->addMatcher(cxxDefaultArgExpr().bind("stmt"), this);
  // Declaring default parameters is disallowed.
  Finder->addMatcher(parmVarDecl(hasDefaultArgument()).bind("decl"), this);
}