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#!/bin/sh

#########################################################################
# Copyright (C) 2009-2011 Tavian Barnes <tavianator@tavianator.com>     #
#                                                                       #
# This file is part of The Dimension Test Suite.                        #
#                                                                       #
# The Dimension Test Suite 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.                       #
#                                                                       #
# The Dimension Test Suite 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/>. #
#########################################################################

directives=$(${top_builddir}/dimension/dimension ${dimension_flags} --tokenize --parse ${srcdir}/directives.pov)
directives_exp="$(echo -n \
'(#version (float "3.6") ;
  #debug (string "debug")
  #warning (string "warning")
  #include (string "directives.inc")
  #declare (identifier "R") = (integer "1") ;
  #local (identifier "Color") = rgb < (integer "1") , (integer "0") , (integer "1") > ;
  #declare (identifier "Unused") = - (integer "1") ;
  #undef (identifier "Unused")
  #ifdef \( (identifier "Local") \)
    #error (string "Local escaped from include file")
  #end
  #ifdef \( (identifier "Unused") \)
    #error (string "#undef failed")
  #end
  #macro (identifier "Make_Sphere") \( (identifier "n") \)
    sphere {
      (identifier "Center") + < (integer "0") , (identifier "n") , (integer "0") > , (identifier "R")
      pigment {
        color (identifier "Color") green (integer "1")
      }
    }
  #end
  #macro (identifier "Inc") \( (identifier "n") \)
    #declare (identifier "n") = (identifier "n") + (integer "1") ;
  #end
  #declare (identifier "Counter") = (integer "0") ;
  #while \( (identifier "Counter") < (integer "2") \)
    #if \( #if \( (integer "1") = (integer "1") \) (integer "0") #end = (integer "0") & ! (integer "1") \)
      #error (string "Nested #if parsing failed")
    #else
      (identifier "Make_Sphere") \( (identifier "Counter") \)
    #end
    (identifier "Inc") \( (identifier "Counter") \)
  #end

  #declare (identifier "Box") =
    box {
      < - (integer "1") , - (integer "1") , - (integer "1") > ,
      < (integer "1") , (integer "1") , (integer "1") >
      pigment {
        color rgb < (integer "1") , (integer "1") , (integer "1") >
      }
    }

  object {
    (identifier "Box")
    finish {
      phong (float "0.2")
    }
  })' \
| tr '\n' ' ' | sed -r 's/[[:space:]]+/ /g')
$(echo -n \
'((object
    (sphere
      (vector (integer 0) (integer 0) (integer 0) (integer 0) (integer 0))
      (integer 1))
    (object-modifiers
      (pigment
        (vector (integer 1) (integer 1) (integer 1) (integer 0) (integer 0))
        pigment-modifiers)))
  (object
    (sphere
      (vector (integer 0) (integer 1) (integer 0) (integer 0) (integer 0))
      (integer 1))
    (object-modifiers
      (pigment
        (vector (integer 1) (integer 1) (integer 1) (integer 0) (integer 0))
         pigment-modifiers)))
  (object
    (box
      (vector (integer -1) (integer -1) (integer -1) (integer 0) (integer 0))
      (vector (integer 1) (integer 1) (integer 1) (integer 0) (integer 0)))
    (object-modifiers
      (pigment
        (vector (integer 1) (integer 1) (integer 1) (integer 0) (integer 0))
        pigment-modifiers)
      (finish
         (phong (float 0.2))))))' \
| tr '\n' ' ' | sed -r 's/[[:space:]]+/ /g')"

if [ "$directives" != "$directives_exp" ]; then
  echo "directives.pov parsed as \"$directives\"" >&2
  echo "             -- expected \"$directives_exp\"" >&2
  exit 1
fi