def getSortVarNotInTerm(sv, term):
"""
get a sv that is not in term
"""
i = 0
while ASTUtils.exists(term, lambda x: x == sv):
i = i + 1
newsv = PPSortVar(sv.name + '_' + str(i))
sv = newsv
return sv
def mkDimVarNotInTerm(dv, term):
"""
get a dv that is not in term
"""
i = 0
while ASTUtils.exists(term, lambda x: x == dv):
i = i + 1
newdv = PPDimVar(dv.name + '_' + str(i))
dv = newdv
return dv
def occursIn(sv: PPSortVar, sort: PPSort) -> bool:
"""
Check if a variable occurs in a term
"""
return ASTUtils.exists(sort, lambda x: x == sv)
