33 lines
843 B
Text
33 lines
843 B
Text
variable A : Type.{1}
|
|
variable a : A
|
|
variable g : A → A
|
|
variable f : A → A → A
|
|
|
|
(*
|
|
local f = Const("f")
|
|
local g = Const("g")
|
|
local comma = name(",")
|
|
function parse_pair()
|
|
local p1 = parser.parse_expr()
|
|
parser.check_token_next(comma, "invalid pair, ',' expected")
|
|
print("line: " .. tostring(parser.pos()))
|
|
local p2 = parser.parse_expr()
|
|
return f(p1, p2)
|
|
end
|
|
|
|
local lbracket = name("[")
|
|
local rbracket = name("]")
|
|
function parse_bracket()
|
|
local l, c = parser.pos()
|
|
parser.check_token_next(lbracket, "'[' expected")
|
|
local r = parser.parse_expr()
|
|
parser.check_token_next(rbracket, "']' expected")
|
|
return parser.save_pos(g(r), l, c)
|
|
end
|
|
*)
|
|
|
|
|
|
notation `tst` A:(call parse_pair) := A
|
|
notation `simple` A:(call parse_bracket) `,` B:(call parse_bracket) := f A B
|
|
variable b : A
|
|
check g (tst (simple [b], [a]), a)
|