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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 | --Copyright (c) 1991-2002, The Numerical ALgorithms Group Ltd.
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)abbrev domain SUCH SuchThat
++ Description:
++ This domain implements "such that" forms
SuchThat(S1, S2): Cat == Capsule where
E ==> OutputForm
S1, S2: SetCategory
Cat == SetCategory with
construct: (S1, S2) -> %
++ construct(s,t) makes a form s:t
lhs: % -> S1
++ lhs(f) returns the left side of f
rhs: % -> S2
++ rhs(f) returns the right side of f
Capsule == add
Rep := Record(obj: S1, cond: S2)
construct(o, c) == [o, c]$Record(obj: S1, cond: S2)
lhs st == st.obj
rhs st == st.cond
coerce(w):E == infix("|"::E, w.obj::E, w.cond::E)
|