bool VisitObjCMessageExpr()

in glean/lang/clang/ast.cpp [2227:2259]

• 26 lines of code
• 7 McCabe index (conditional complexity)

  bool VisitObjCMessageExpr(const clang::ObjCMessageExpr *expr) {
    if (!expr->isImplicit()) {
      if (const auto *decl = expr->getMethodDecl()) {
        folly::Optional<Cxx::XRefTarget> target;
        if (auto r = objcMethodDecls(decl)) {
          target = Cxx::XRefTarget::declaration(
            Cxx::Declaration::objcMethod(r->decl));
        }
        const auto sel = expr->getSelector();
        const auto nsels = expr->getNumSelectorLocs();
        for (unsigned int i = 0; i < nsels; ++i) {
          const auto start = expr->getSelectorLoc(i);
          if (start.isValid()) {
            // NOTE: Arguments don't necessarily have names, e.g.
            // foo:(float)x :(float)y :(float)z
            // which would then be called as
            // [o foo:1 :2 :3]
            //
            // There will be at least one word (the method name) so we'll
            // definitely get at least one xref.
            if (auto ident = sel.getIdentifierInfoForSlot(i)) {
              const auto end = start.getLocWithOffset(
                ident->getLength()-1);
              xrefTarget(
                clang::SourceRange(start,end),
                XRef::to(decl, target));
            }
          }
        }
      }
    }
    return true;
  }