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 // -*- mode: c++ -*-

 // Copyright (c) 2010 Google Inc.

 // All rights reserved.

 //

 // Redistribution and use in source and binary forms, with or without

 // modification, are permitted provided that the following conditions are

 // met:

 //

 //     * Redistributions of source code must retain the above copyright

 // notice, this list of conditions and the following disclaimer.

 //     * Redistributions in binary form must reproduce the above

 // copyright notice, this list of conditions and the following disclaimer

 // in the documentation and/or other materials provided with the

 // distribution.

 //     * Neither the name of Google Inc. nor the names of its

 // contributors may be used to endorse or promote products derived from

 // this software without specific prior written permission.

 //

 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 // Original author: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com>

 // language.h: Define google_breakpad::Language. Instances of

 // subclasses of this class provide language-appropriate operations

 // for the Breakpad symbol dumper.

 #ifndef COMMON_LINUX_LANGUAGE_H__

 #define COMMON_LINUX_LANGUAGE_H__

 #include <string>

 #include "common/using_std_string.h"

 namespace google_breakpad {

 // An abstract base class for language-specific operations. We choose

 // an instance of a subclass of this when we find the CU's language.

 // This class's definitions are appropriate for CUs with no specified

 // language.

 class Language {

  public:

   // A base class destructor should be either public and virtual,

   // or protected and nonvirtual.

   virtual ~Language() {}

   // Return true if this language has functions to which we can assign

   // line numbers. (Debugging info for assembly language, for example,

   // can have source location information, but does not have functions

   // recorded using DW_TAG_subprogram DIEs.)

   virtual bool HasFunctions() const { return true; }

   // Construct a fully-qualified, language-appropriate form of NAME,

   // given that PARENT_NAME is the name of the construct enclosing

   // NAME. If PARENT_NAME is the empty string, then NAME is a

   // top-level name.

   //

   // This API sort of assumes that a fully-qualified name is always

   // some simple textual composition of the unqualified name and its

   // parent's name, and that we don't need to know anything else about

   // the parent or the child (say, their DIEs' tags) to do the job.

   // This is true for the languages we support at the moment, and

   // keeps things concrete. Perhaps a more refined operation would

   // take into account the parent and child DIE types, allow languages

   // to use their own data type for complex parent names, etc. But if

   // C++ doesn't need all that, who would?

   virtual string MakeQualifiedName (const string &parent_name,

                                     const string &name) const = 0;

   // Instances for specific languages.

   static const Language * const CPlusPlus,

                         * const Java,

                         * const Assembler;

 };

 } // namespace google_breakpad

 #endif  // COMMON_LINUX_LANGUAGE_H__