-- Copyright (c) 1991-2002, The Numerical ALgorithms Group Ltd.
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-- Copyright (C) 2007, Gabriel Dos Reis.
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import posit
namespace BOOT

--% Functions to handle specific errors (mostly syntax)
 

syGeneralErrorHere: () -> %Void
syGeneralErrorHere() ==
   sySpecificErrorHere('S2CY0002, [])
 
sySpecificErrorHere: (%Symbol,%List %Form) -> %Void
sySpecificErrorHere(key,args) ==
   sySpecificErrorAtToken($stok, key, args)
 
sySpecificErrorAtToken: (%Thing,%Symbol,%List %Form) -> %Void
sySpecificErrorAtToken(tok,key,args) ==
   pos := tokPosn tok
   ncSoftError(pos, key, args)
 
syIgnoredFromTo: (%List %Form,%List %Form) -> %Void
syIgnoredFromTo(pos1, pos2) ==
  if pfGlobalLinePosn pos1 = pfGlobalLinePosn pos2 then
      ncSoftError(FromTo(pos1,pos2), 'S2CY0005, [])
  else
      ncSoftError(From pos1, 'S2CY0003, [])
      ncSoftError(To   pos2, 'S2CY0004, [])
 
npTrapForm: %Thing -> %Void
npTrapForm(x)==
   a:=pfSourceStok x
   a='NoToken =>
         syGeneralErrorHere()
         THROW("TRAPPOINT","TRAPPED")
   ncSoftError(tokPosn a, 'S2CY0002, [])
   THROW("TRAPPOINT","TRAPPED")
 
npTrap: () -> %Thing
npTrap()==
   ncSoftError(tokPosn $stok,'S2CY0002,[])
   THROW("TRAPPOINT","TRAPPED")