equal
deleted
inserted
replaced
716 ((Scan.lift (Args.name --| (Args.$$$ "\\<equiv>" || Args.$$$ "==")) >> SOME) |
716 ((Scan.lift (Args.name --| (Args.$$$ "\\<equiv>" || Args.$$$ "==")) >> SOME) |
717 -- Args.term) >> SOME || |
717 -- Args.term) >> SOME || |
718 inst >> Option.map (pair NONE); |
718 inst >> Option.map (pair NONE); |
719 |
719 |
720 val free = Scan.state -- Args.term >> (fn (_, Free v) => v | (context, t) => |
720 val free = Scan.state -- Args.term >> (fn (_, Free v) => v | (context, t) => |
721 error ("Bad free variable: " ^ ProofContext.string_of_term (Context.proof_of context) t)); |
721 error ("Bad free variable: " ^ Syntax.string_of_term (Context.proof_of context) t)); |
722 |
722 |
723 fun unless_more_args scan = Scan.unless (Scan.lift |
723 fun unless_more_args scan = Scan.unless (Scan.lift |
724 ((Args.$$$ arbitraryN || Args.$$$ takingN || Args.$$$ typeN || |
724 ((Args.$$$ arbitraryN || Args.$$$ takingN || Args.$$$ typeN || |
725 Args.$$$ predN || Args.$$$ setN || Args.$$$ ruleN) -- Args.colon)) scan; |
725 Args.$$$ predN || Args.$$$ setN || Args.$$$ ruleN) -- Args.colon)) scan; |
726 |
726 |