diff options
| author |  Ziv Scully <ziv@mit.edu> | 2014-11-10 22:04:40 -0500 |
|---|---|---|
| committer | Ziv Scully <ziv@mit.edu> | 2014-11-10 22:04:40 -0500 |
| commit | dc5e7102563b9c0714391f86b6dcf852445ee192 (patch) | |
| tree | c3d3413da82cff5b180dd917ad98e4963a48d64c /src/sql.sig | |
| parent | 7b94f3433f47e4e5010dc2af6010181da49637e8 (diff) | |
Progress towards invalidation based on equalities of fields.
Diffstat (limited to 'src/sql.sig')
| -rw-r--r-- | src/sql.sig | 26 |
1 files changed, 16 insertions, 10 deletions
diff --git a/src/sql.sig b/src/sql.sig index cf2ae14a..5f5d1b23 100644 --- a/src/sql.sig +++ b/src/sql.sig @@ -26,24 +26,30 @@ datatype exp = | Recd of (string * exp) list | Proj of exp * string -datatype reln = - Known - | Sql of string - | PCon0 of string - | PCon1 of string - | Eq +datatype cmp = + Eq | Ne | Lt | Le | Gt | Ge +datatype reln = + Known + | Sql of string + | PCon0 of string + | PCon1 of string + | Cmp of cmp + +datatype lop = + And + | Or + datatype prop = True | False | Unknown - | And of prop * prop - | Or of prop * prop + | Lop of lop * prop * prop | Reln of reln * exp list | Cond of exp * prop @@ -52,8 +58,8 @@ type 'a parser val parse : 'a parser -> Mono.exp -> 'a option datatype Rel = - Exps of exp * exp -> prop - | Props of prop * prop -> prop + RCmp of cmp + | RLop of lop datatype sqexp = SqConst of Prim.t |