#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;


}
='/guix/log/gnu?id=5cad6f721b8884b612178896f06cd69d5839402c'>gnu</a>/<a href='/guix/log/gnu/packages?id=5cad6f721b8884b612178896f06cd69d5839402c'>packages</a>/<a href='/guix/log/gnu/packages/raspberry-pi.scm?id=5cad6f721b8884b612178896f06cd69d5839402c'>raspberry-pi.scm</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/gnu/packages/raspberry-pi.scm?id=5cad6f721b8884b612178896f06cd69d5839402c&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2023-09-25 10:33:04 -0400'>2023-09-25</span></td><td><a href='/guix/commit/gnu/packages/raspberry-pi.scm?id=35c1df5bd6317b1cd038c1a4aca1c7e4a52d4d93'>gnu: embedded: Turn packages using top-level variables into procedures.</a><span class='msg-avail'>...<span class='msg-tooltip'>Fixes &lt;https://issues.guix.gnu.org/65716&gt;.

Before this change, simply adding the following import:

  modified   gnu/packages/firmware.scm
  @@ -42,6 +42,7 @@ (define-module (gnu packages firmware)
     #:use-module (gnu packages admin)
     #:use-module (gnu packages autotools)
     #:use-module (gnu packages assembly)
  +  #:use-module (gnu packages avr)
     #:use-module (gnu packages backup)
     #:use-module (gnu packages base)
     #:use-module (gnu packages bash)

Would cause byte compilation and/or evaluation to fail due to a circular
module dependency.

* gnu/packages/embedded.scm: Add commentary.
(gcc-arm-none-eabi-4.9, gcc-arm-none-eabi-6, newlib-arm-none-eabi)
(newlib-nano-arm-none-eabi, gcc-arm-none-eabi-7-2018-q2-update)
(newlib-arm-none-eabi-7-2018-q2-update)
(newlib-nano-arm-none-eabi-7-2018-q2-update)
(arm-none-eabi-toolchain-4.9, arm-none-eabi-nano-toolchain-4.9)
(arm-none-eabi-toolchain-6, arm-none-eabi-nano-toolchain-6)
(arm-none-eabi-toolchain-7-2018-q2-update, gdb-arm-none-eabi)
(propeller-binutils, propeller-gcc-6, propeller-gcc-4)
(propeller-gcc, propeller-toolchain, propeller-development-suite)
(gcc-vc4): Turn into procedures, prefixing the procedure name with 'make-',
and adjust all users.
(make-libstdc++-arm-none-eabi) [arguments]: Avoid an unused warning.
(arm-none-eabi-toolchain):  Rename to...
(make-arm-none-eabi-toolchain): ... this.
* gnu/packages/raspberry-pi.scm (raspi-arm-chainloader) [native-inputs]:
Replace gcc-arm-none-eabi-6 with (make-arm-none-eabi-toolchain).
* gnu/packages/axoloti.scm (axoloti-runtime)
[inputs]: Replace arm-none-eabi-nano-toolchain-4.9
with (make-arm-none-eabi-nano-toolchain-4.9).
(axoloti-patcher): Likewise.
(axoloti-patcher-next) [inputs]: Replace
arm-none-eabi-nano-toolchain-7-2018-q2-update
with (make-arm-none-eabi-nano-toolchain-7-2018-q2-update).

Series-changes: 2
- Use mlambda for procedures
</span></span></td><td>Maxim Cournoyer</td></tr>