-- Copyright 2023 Stanford University, NVIDIA Corporation
--
-- 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.

-- Regent Code Generation Hooks

local codegen_hooks = {}

function codegen_hooks.set_update_mapping_tag(fn)
  codegen_hooks.update_mapping_tag = fn
end

function codegen_hooks.gen_update_mapping_tag(tag_var, has_tag, task_var)
  if codegen_hooks.update_mapping_tag then
    assert(not has_tag, "attempting to update mapping tag on task which already has one set")
    return quote
      [tag_var] =
        [codegen_hooks.update_mapping_tag]([task_var])
    end
  else
    return quote end
  end
end

return codegen_hooks
