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The use of the code analysis library OpenC++: modifications, improvements, error corrections - 9. Update of rTemplateDecl2 function.

AndreyKarpov

9. Update of rTemplateDecl2 function.

Without going into details we offer you to replace rTemplateDecl2() function with the given variant. This will exclude some errors while working with template classes.

bool Parser::rTemplateDecl2(Ptree*& decl,
                            TemplateDeclKind &kind)
{
    Token tk;
    Ptree *args = 0;
    if(lex->GetToken(tk) != TEMPLATE)
        return false;
    if(lex->LookAhead(0) != '<') {
      if (lex->LookAhead(0) == CLASS) {
        // template instantiation
        decl = 0;
        kind = tdk_instantiation;
        return true;    // ignore TEMPLATE
      }
      decl = new (GC)
        PtreeTemplateDecl(new (GC) LeafReserved(tk));
    } else {
      decl = new (GC)
        PtreeTemplateDecl(new (GC) LeafReserved(tk));
      if(lex->GetToken(tk) != '<')
        return false;
      decl = PtreeUtil::Snoc(decl, new (GC) Leaf(tk));
      if(!rTempArgList(args))
        return false;
      if(lex->GetToken(tk) != '>')
        return false;
    }
    decl =
      PtreeUtil::Nconc(decl,
        PtreeUtil::List(args, new (GC) Leaf(tk)));
    // ignore nested TEMPLATE
    while (lex->LookAhead(0) == TEMPLATE) {
        lex->GetToken(tk);
        if(lex->LookAhead(0) != '<')
            break;
        lex->GetToken(tk);
        if(!rTempArgList(args))
            return false;
        if(lex->GetToken(tk) != '>')
            return false;
    }
    if (args == 0)
        // template < > declaration
        kind = tdk_specialization;
    else
        // template < ... > declaration
        kind = tdk_decl;
    return true;
}

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