#pragma once

#include "config.h"

#include <string>
#include <list>
#include <set>

#include <boost/format.hpp>

/* Before 4.7, gcc's std::exception uses empty throw() specifiers for
 * its (virtual) destructor and what() in c++11 mode, in violation of spec
 */
#ifdef __GNUC__
#if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 7)
#define EXCEPTION_NEEDS_THROW_SPEC
#endif
#endif


namespace nix {


/* Inherit some names from other namespaces for convenience. */
using std::string;
using std::list;
using std::set;
using std::vector;
using boost::format;


struct FormatOrString
{
    string s;
    FormatOrString(const string & s) : s(s) { };
    FormatOrString(const format & f) : s(f.str()) { };
    FormatOrString(const char * s) : s(s) { };
};


/* BaseError should generally not be caught, as it has Interrupted as
   a subclass. Catch Error instead. */
class BaseError : public std::exception
{
protected:
    string prefix_; // used for location traces etc.
    string err;
public:
    unsigned int status; // exit status
    BaseError(const FormatOrString & fs, unsigned int status = 1);
#ifdef EXCEPTION_NEEDS_THROW_SPEC
    ~BaseError() throw () { };
    const char * what() const throw () { return err.c_str(); }
#else
    const char * what() const noexcept { return err.c_str(); }
#endif
    const string & msg() const { return err; }
    const string & prefix() const { return prefix_; }
    BaseError & addPrefix(const FormatOrString & fs);
};

#define MakeError(newClass, superClass) \
    class newClass : public superClass                  \
    {                                                   \
    public:                                             \
        newClass(const FormatOrString & fs, unsigned int status = 1) : superClass(fs, status) { }; \
    };

MakeError(Error, BaseError)

class SysError : public Error
{
public:
    int errNo;
    SysError(const FormatOrString & fs);
};


typedef list<string> Strings;
typedef set<string> StringSet;


/* Paths are just strings. */
typedef string Path;
typedef list<Path> Paths;
typedef set<Path> PathSet;


typedef enum {
    lvlError = 0,
    lvlInfo,
    lvlTalkative,
    lvlChatty,
    lvlDebug,
    lvlVomit
} Verbosity;


}
cc0f3f06dce27'>.guix-authorizations</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/.guix-authorizations?id=89ca634050a985e672beb10afb9cc0f3f06dce27&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2020-09-04 11:29:51 +0200'>2020-09-04</span></td><td><a href='/guix/commit/.guix-authorizations?id=d60f63a83852685cf439bbb6af678fb2ad93efaa'>.guix-authorizations: Add planglois to the committers.</a><span class='msg-avail'>...<span class='msg-tooltip'>* .guix-authorizations: Add planglois.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-07-18 21:12:38 +0200'>2020-07-18</span></td><td><a href='/guix/commit/.guix-authorizations?id=ba1d9680d61d3b06d9b81a81863448f494d654a7'>.guix-authorizations: Add brettgilio (back) to the committers.</a><span class='msg-avail'>...<span class='msg-tooltip'>* .guix-authorizations: Add fingerprint for brettgilio.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2020-07-01 12:50:22 +0200'>2020-07-01</span></td><td><a href='/guix/commit/.guix-authorizations?id=9f5f3932debc72a57a830fc6ca5ab980f6db4941'>.guix-authorizations: Remove keys of two former contributors.</a><span class='msg-avail'>...<span class='msg-tooltip'>* .guix-authorizations: Remove key of David Craven, who left the project
in 2017, and Federico Beffa, whose last commit was in Feb. 2017.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-07-01 12:50:22 +0200'>2020-07-01</span></td><td><a href='/guix/commit/.guix-authorizations?id=5402f3ed05e72f17509e3e732b67488b4643066d'>.guix-authorizations: Remove former keys that are no longer used.</a><span class='msg-avail'>...<span class='msg-tooltip'>* .guix-authorizations: Remove old keys of dvc, efraim, and janneke.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-07-01 12:50:22 +0200'>2020-07-01</span></td><td><a href='/guix/commit/.guix-authorizations?id=eb8a79218d33a513d4673162fd752efb1152a084'>.guix-authorizations: Remove brettgilio's old key.</a><span class='msg-avail'>...<span class='msg-tooltip'>* .guix-authorizations: Remove key "DFC0 C7F7 9EE6 0CA7 AE55  5E19 6722
43C4 A03F 0EEE" (Brett Gilio).  See
&lt;https://lists.gnu.org/archive/html/guix-devel/2020-06/msg00323.html&gt;.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-05-04 10:43:52 +0200'>2020-05-04</span></td><td><a href='/guix/commit/.guix-authorizations?id=d074f73aacc5a39aed0202d6e45721f53f34a8c0'>.guix-authorizations: Add bricewge to the committers.</a><span class='msg-avail'>...<span class='msg-tooltip'>* .guix-authorizations: Add fingerprint for bricewge.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-05-04 09:56:13 +0200'>2020-05-04</span></td><td><a href='/guix/commit/.guix-authorizations?id=bee5b7a0f8547a40f05d0891a71fff1fed4b2b3e'>.guix-authorizations: Augment.</a><span class='msg-avail'>...<span class='msg-tooltip'>* .guix-authorizations: Add all the currently authorized committers.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-05-04 09:56:12 +0200'>2020-05-04</span></td><td><a href='/guix/commit/.guix-authorizations?id=c91e27c60864faa229198f6f0caf620275c429a2'>Add '.guix-authorizations'.</a><span class='msg-avail'>...<span class='msg-tooltip'>* .guix-authorizations: New file.
</span></span></td><td>Ludovic Courtès</td></tr>