compiler/idgen.nim


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#
#           The Nimrod Compiler
#        (c) Copyright 2012 Andreas Rumpf
#
#    See the file "copying.txt", included in this
#    distribution, for details about the copyright.
#

## This module contains a simple persistent id generator.

import idents, strutils, os, options

var gFrontEndId, gBackendId*: int

const
  debugIds* = false

when debugIds:
  import intsets
  
  var usedIds = InitIntSet()

proc registerID*(id: PIdObj) = 
  when debugIDs: 
    if id.id == -1 or ContainsOrIncl(usedIds, id.id): 
      InternalError("ID already used: " & $id.id)

proc getID*(): int {.inline.} = 
  result = gFrontEndId
  inc(gFrontEndId)

proc backendId*(): int {.inline.} = 
  result = gBackendId
  inc(gBackendId)

proc setId*(id: int)