TemplateUtils.h

/*
   This file is part of the clazy static checker.

  Copyright (C) 2016 Sergio Martins <smartins@kde.org>

  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Library General Public
  License as published by the Free Software Foundation; either
  version 2 of the License, or (at your option) any later version.

  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Library General Public License for more details.

  You should have received a copy of the GNU Library General Public License
  along with this library; see the file COPYING.LIB.  If not, write to
  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  Boston, MA 02110-1301, USA.
*/

#include <clang/AST/Type.h>

#include <vector>
#include <string>

namespace clang {
    class CXXMethodDecl;
    class CXXRecordDecl;
    class ClassTemplateSpecializationDecl;
    class Decl;
}

namespace TemplateUtils
{
    /**
     * Returns a list of QualTypes for the template arguments.
     * For example:
     *    If the method was foo<int, Bar, char*>(), it would return {int, Bar, Char*}
     */
    std::vector<clang::QualType> getTemplateArgumentsTypes(clang::CXXMethodDecl *);

    /**
     * Returns a list of QualTypes for the template arguments.
     * For example:
     *    If the class was QList<int>(), it would return {int}
     */
    std::vector<clang::QualType> getTemplateArgumentsTypes(clang::CXXRecordDecl *);

    clang::ClassTemplateSpecializationDecl *templateDecl(clang::Decl *decl);

    /**
     * Returns a string with the type name of the argument at the specified index.
     * If recordOnly is true, then it will only return a name if the argument is a class or struct.
     *
     * Example: For QList<Foo>, getTemplateArgumentTypeStr(decl, 0) would return "Foo"
     */
    std::string getTemplateArgumentTypeStr(clang::ClassTemplateSpecializationDecl*,
                                           unsigned int index, const clang::LangOptions &lo, bool recordOnly = false);

    clang::QualType getTemplateArgumentType(clang::ClassTemplateSpecializationDecl *, unsigned int index);

}