dest_thy_type : {Thy:string, Name:string, Args:hol_type list} -> term

SYNOPSIS

Breaks apart a type (other than a variable type).

DESCRIBE

If ty is an application of a type operator Tyop, which was declared in theory Thy, to a list of types Args, then dest_thy_type ty returns {Tyop,Thy,Args}.

FAILURE

Fails if ty is a type variable.

EXAMPLE

   - dest_thy_type (alpha --> bool);
   > val it = {Args = [`:'a`, `:bool`], Thy = "min", Tyop = "fun"} :

   - try dest_thy_type alpha;

   Exception raised at Type.dest_thy_type:

SEEALSO  dest_type,   mk_thy_type,   mk_type,   mk_thy_const