-- Copyright 2023 Stanford University
--
-- Licensed under the Apache License, Version 2.0 (the "License");
-- you may not use this file except in compliance with the License.
-- You may obtain a copy of the License at
--
--     http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.

import "regent"

local struct i2 { x : int, y : int }
terra i2.metamethods.__add(a : i2, b : i2) : i2
  return i2 { x = a.x + b.x, y = a.y + b.y }
end
terra i2.metamethods.__sub(a : i2, b : i2) : i2
  return i2 { x = a.x - b.x, y = a.y - b.y }
end
local i2d = index_type(i2, "i2d")

task main()
  var is = ispace(i2d, { x = 1, y = 3 })
  var t = i2d { x = 10, y = 20 }
  for i in is do
    t += i + { x = 100, y = 200 }
  end
  regentlib.assert(t.x == 310, "test failed")
  regentlib.assert(t.y == 623, "test failed")
end
regentlib.start(main)
