# Checking the output filenames.                    -*- Autotest -*-
# Copyright (C) 2004, 2005, 2007, 2008 Free Software Foundation, Inc.

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

AT_BANNER([[C++ Features.]])


## ---------- ##
## Variants.  ##
## ---------- ##

# AT_CHECK_VARIANTS([DIRECTIVES])
# -------------------------------
# Check the support of variants in C++, with the additional DIRECTIVES.
m4_define([AT_CHECK_VARIANTS],
[AT_SETUP([Variants $1])

# Store strings and integers in a list of strings.
AT_DATA([list.yy],
[[%debug
%skeleton "lalr1.cc"
%defines
%define variant
]m4_bpatsubst([$1], [\\n], [
])[

%code requires // code for the .hh file
{
#include <list>
#include <string>
typedef std::list<std::string> strings_type;
}

%code // code for the .cc file
{
#include <algorithm>
#include <iostream>
#include <iterator>
#include <sstream>

  // Prototype of the yylex function providing subsequent tokens.
  static yy::parser::token_type yylex(yy::parser::semantic_type* yylval);

  // Printing a list of strings.
  // Koening look up will look into std, since that's an std::list.
  namespace std
  {
    std::ostream&
    operator<<(std::ostream& o, const strings_type& s)
    {
      std::copy(s.begin(), s.end(),
                std::ostream_iterator<strings_type::value_type>(o, "\n"));
      return o;
    }
  }

  // Conversion to string.
  template <typename T>
    inline
    std::string
    string_cast (const T& t)
  {
    std::ostringstream o;
    o << t;
    return o.str();
  }
}

%token <std::string> TEXT;
%token <int> NUMBER;
%printer { debug_stream() << $][$; } <int> <std::string> <strings_type>;
%token END_OF_FILE 0;

%type <std::string> item;
%type <strings_type> list result;

%%

result:
  list  	{ std::cout << $][1; }
;

list:
  /* nothing */	{ /* Generates an empty string list */ }
| list item	{ std::swap($][$,$][1); $$.push_back($][2); }
;

item:
  TEXT		{ std::swap($][$,$][1); }
| NUMBER	{ $][$ = string_cast($][1); }
;
%%

static
yy::parser::token_type
yylex(yy::parser::semantic_type* yylval)
{
  static int stage = 0;
  yy::parser::token_type result;

  switch (stage)
  {
    case 0:
    case 4:
#ifdef ONE_STAGE_BUILD
      yylval->build(string_cast(stage));
#else
      yylval->build<std::string>() = string_cast(stage);
#endif
      result = yy::parser::token::TEXT;
      break;
    case 1:
    case 2:
    case 3:
#ifdef ONE_STAGE_BUILD
      yylval->build(stage);
#else
      yylval->build<int>() = stage;
#endif
      result = yy::parser::token::NUMBER;
      break;
    default:
      result = yy::parser::token::END_OF_FILE;
      break;
  }

  ++stage;
  return result;
}

void
yy::parser::error(const yy::parser::location_type& yylloc,
                  const std::string& message)
{
  std::cerr << yylloc << ": " << message << std::endl;
}

int
main(int argc, char *argv[])
{
  yy::parser p;
  p.set_debug_level(!!getenv("YYDEBUG"));
  return p.parse();
}
]])

AT_BISON_CHECK([-o list.cc list.yy])
AT_COMPILE_CXX([list])
AT_CHECK([./list], 0,
[0
1
2
3
4
])

AT_CLEANUP
])

AT_CHECK_VARIANTS([])
AT_CHECK_VARIANTS([%define assert])
AT_CHECK_VARIANTS([[%define assert %code {\n#define ONE_STAGE_BUILD\n}]])


## ----------------------- ##
## Doxygen Documentation.  ##
## ----------------------- ##

m4_define([AT_CHECK_DOXYGEN],
[m4_case([$1],
         [Public],  [m4_pushdef([AT_DOXYGEN_PRIVATE], [NO])],
         [Private], [m4_pushdef([AT_DOXYGEN_PRIVATE], [YES])],
	 [m4_fatal([invalid argument: $1])])
AT_SETUP([Doxygen $1 Documentation])

AT_DATA([input.yy],
[[%skeleton "lalr1.cc"
%locations
%debug
%defines
%%
exp:;
%%
yy::parser::error (const location& l, const std::string& m)
{
  std::cerr << l << s << std::endl;
}
]])

AT_BISON_CHECK([-o input.cc input.yy], 0)

AT_DATA([Doxyfile],
[# The PROJECT_NAME tag is a single word (or a sequence of words
# surrounded by quotes) that should identify the project.
PROJECT_NAME = "Bison C++ Parser"

# The QUIET tag can be used to turn on/off the messages that are
# generated by doxygen. Possible values are YES and NO. If left blank
# NO is used.
QUIET = YES

# The WARNINGS tag can be used to turn on/off the warning messages
# that are generated by doxygen. Possible values are YES and NO. If
# left blank NO is used.
WARNINGS     = YES
# If WARN_IF_UNDOCUMENTED is set to YES, then doxygen will generate
# warnings for undocumented members. If EXTRACT_ALL is set to YES then
# this flag will automatically be disabled.
WARN_IF_UNDOCUMENTED   = YES
# If WARN_IF_DOC_ERROR is set to YES, doxygen will generate warnings
# for potential errors in the documentation, such as not documenting
# some parameters in a documented function, or documenting parameters
# that don't exist or using markup commands wrongly.
WARN_IF_DOC_ERROR      = YES
# The WARN_FORMAT tag determines the format of the warning messages
# that doxygen can produce. The string should contain the $file,
# $line, and $text tags, which will be replaced by the file and line
# number from which the warning originated and the warning text.
WARN_FORMAT            = "$file:$line: $text"

# If the EXTRACT_ALL tag is set to YES doxygen will assume all
# entities in documentation are documented, even if no documentation
# was available.  Private class members and static file members will
# be hidden unless the EXTRACT_PRIVATE and EXTRACT_STATIC tags are set
# to YES
EXTRACT_ALL            = YES

# If the EXTRACT_PRIVATE tag is set to YES all private members of a
# class will be included in the documentation.
EXTRACT_PRIVATE        = AT_DOXYGEN_PRIVATE

# If the EXTRACT_STATIC tag is set to YES all static members of a file
# will be included in the documentation.
EXTRACT_STATIC         = AT_DOXYGEN_PRIVATE
])

AT_CHECK([doxygen --version || exit 77], 0, ignore)
AT_CHECK([doxygen], 0, [], [ignore])

AT_CLEANUP

m4_popdef([AT_DOXYGEN_PRIVATE])
])# AT_CHECK_DOXYGEN

AT_CHECK_DOXYGEN([Public])
AT_CHECK_DOXYGEN([Private])




## ------------ ##
## Namespaces.  ##
## ------------ ##

# AT_CHECK_NAMESPACE(NAMESPACE-DECL, [COMPILE-ERROR])
# ---------------------------------------------------
# See if Bison can handle %define namespace "NAMESPACE-DECL".  If COMPILE-ERROR
# is specified, then Bison should accept the input, but compilation will fail,
# so don't check compilation.
m4_define([AT_CHECK_NAMESPACE],
[

AT_DATA_GRAMMAR([[input.y]],
[[%language "C++"
%defines
%define namespace "]$1["
%union { int i; }
%define global_tokens_and_yystype

%code {
  // YYSTYPE contains a namespace reference.
  int yylex (YYSTYPE *lval) {
    lval->i = 3;
    return 0;
  }
}

%%

start: ;

%%

void
]$1[::parser::error (const ]$1[::parser::location_type &loc,
                     const std::string &msg)
{
  std::cerr << "At " << loc << ": " << msg << std::endl;
}

int
main (void)
{
  ]$1[::parser p;
  return p.parse ();
}
]])

AT_BISON_CHECK([[-o input.cc input.y]])

m4_if([$#], [1],
[AT_COMPILE_CXX([[input]], [[input.cc]])
AT_PARSER_CHECK([[./input]])])

])

AT_SETUP([[Relative namespace references]])
AT_CHECK_NAMESPACE([[foo]])
AT_CHECK_NAMESPACE([[foo::bar]])
AT_CHECK_NAMESPACE([[foo::bar::baz]])
AT_CLEANUP

AT_SETUP([[Absolute namespace references]])
AT_CHECK_NAMESPACE([[::foo]])
AT_CHECK_NAMESPACE([[::foo::bar]])
AT_CHECK_NAMESPACE([[::foo::bar::baz]])
AT_CHECK_NAMESPACE([[	::foo]])
AT_CHECK_NAMESPACE([[  	 ::foo::bar]])
AT_CHECK_NAMESPACE([[  ::foo::bar::baz]])
AT_CLEANUP

AT_SETUP([[Syntactically invalid namespace references]])
AT_CHECK_NAMESPACE([[:foo:bar]], [[-]])
AT_CHECK_NAMESPACE([[foo: :bar]], [[-]])
# This one is interesting because `[3]' is encoded as `@<:@3@:>@', which
# contains single occurrences of `:'.
AT_CHECK_NAMESPACE([[foo[3]::bar::baz]], [[-]])
AT_CHECK_NAMESPACE([[foo::bar,baz]], [[-]])
AT_CHECK_NAMESPACE([[foo::bar::(baz]], [[-]])
AT_CLEANUP