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SQL comparison operators
author Adam Chlipala <adamc@hcoop.net>
date Sat, 16 Aug 2008 17:18:00 -0400
parents 38b299373676
children 2b665e822e9a
rev   line source
adamc@56 1 type int
adamc@56 2 type float
adamc@56 3 type string
adamc@91 4
adamc@119 5 type unit = {}
adamc@119 6
adamc@186 7 datatype bool = False | True
adamc@186 8
adamc@91 9
adamc@203 10 (** SQL *)
adamc@203 11
adamc@203 12 con sql_table :: {Type} -> Type
adamc@203 13
adamc@204 14 (*** Queries *)
adamc@204 15
adamc@204 16 con sql_query :: {{Type}} -> Type
adamc@209 17 con sql_exp :: {{Type}} -> Type -> Type
adamc@204 18
adamc@207 19 val sql_query : tables :: {({Type} * {Type})}
adamc@209 20 -> {From : $(fold (fn nm => fn selected_unselected :: ({Type} * {Type}) => fn acc =>
adamc@207 21 [nm] ~ acc => selected_unselected.1 ~ selected_unselected.2 =>
adamc@209 22 [nm = sql_table (selected_unselected.1 ++ selected_unselected.2)] ++ acc) [] tables),
adamc@209 23 Where : sql_exp (fold (fn nm => fn selected_unselected :: ({Type} * {Type}) => fn acc =>
adamc@209 24 [nm] ~ acc => selected_unselected.1 ~ selected_unselected.2 =>
adamc@209 25 [nm = selected_unselected.1 ++ selected_unselected.2] ++ acc) [] tables) bool}
adamc@207 26 -> sql_query (fold (fn nm => fn selected_unselected :: ({Type} * {Type}) => fn acc => [nm] ~ acc =>
adamc@207 27 [nm = selected_unselected.1] ++ acc) [] tables)
adamc@204 28
adamc@216 29 class sql_type
adamc@209 30 val sql_bool : sql_type bool
adamc@209 31 val sql_int : sql_type int
adamc@209 32 val sql_float : sql_type float
adamc@209 33 val sql_string : sql_type string
adamc@209 34
adamc@209 35 val sql_inject : tables ::: {{Type}} -> t ::: Type -> t -> sql_type t -> sql_exp tables t
adamc@209 36
adamc@219 37 type sql_comparison
adamc@219 38 val sql_eq : sql_comparison
adamc@219 39 val sql_ne : sql_comparison
adamc@219 40 val sql_lt : sql_comparison
adamc@219 41 val sql_le : sql_comparison
adamc@219 42 val sql_gt : sql_comparison
adamc@219 43 val sql_ge : sql_comparison
adamc@219 44 val sql_comparison : sql_comparison
adamc@219 45 -> tables ::: {{Type}} -> t ::: Type -> sql_exp tables t -> sql_exp tables t
adamc@219 46 -> sql_type t -> sql_exp tables bool
adamc@203 47
adamc@203 48 (** XML *)
adamc@203 49
adamc@139 50 con tag :: {Type} -> {Unit} -> {Unit} -> {Type} -> {Type} -> Type
adamc@91 51
adamc@91 52
adamc@139 53 con xml :: {Unit} -> {Type} -> {Type} -> Type
adamc@141 54 val cdata : ctx ::: {Unit} -> use ::: {Type} -> string -> xml ctx use []
adamc@104 55 val tag : attrsGiven ::: {Type} -> attrsAbsent ::: {Type} -> attrsGiven ~ attrsAbsent
adamc@139 56 -> ctxOuter ::: {Unit} -> ctxInner ::: {Unit}
adamc@139 57 -> useOuter ::: {Type} -> useInner ::: {Type} -> useOuter ~ useInner
adamc@139 58 -> bindOuter ::: {Type} -> bindInner ::: {Type} -> bindOuter ~ bindInner
adamc@104 59 -> $attrsGiven
adamc@139 60 -> tag (attrsGiven ++ attrsAbsent) ctxOuter ctxInner useOuter bindOuter
adamc@139 61 -> xml ctxInner useInner bindInner
adamc@139 62 -> xml ctxOuter (useOuter ++ useInner) (bindOuter ++ bindInner)
adamc@140 63 val join : ctx ::: {Unit}
adamc@139 64 -> use1 ::: {Type} -> bind1 ::: {Type} -> bind2 ::: {Type}
adamc@139 65 -> use1 ~ bind1 -> bind1 ~ bind2
adamc@140 66 -> xml ctx use1 bind1
adamc@140 67 -> xml ctx (use1 ++ bind1) bind2
adamc@140 68 -> xml ctx use1 (bind1 ++ bind2)
adamc@148 69 val useMore : ctx ::: {Unit} -> use1 ::: {Type} -> use2 ::: {Type} -> bind ::: {Type}
adamc@148 70 -> use1 ~ use2
adamc@148 71 -> xml ctx use1 bind
adamc@148 72 -> xml ctx (use1 ++ use2) bind
adamc@91 73
adamc@110 74 con xhtml = xml [Html]
adamc@139 75 con page = xhtml [] []
adamc@110 76
adamc@204 77 (*** HTML details *)
adamc@204 78
adamc@140 79 con html = [Html]
adamc@140 80 con head = [Head]
adamc@140 81 con body = [Body]
adamc@141 82 con lform = [Body, LForm]
adamc@93 83
adamc@140 84 val head : unit -> tag [] html head [] []
adamc@140 85 val title : unit -> tag [] head [] [] []
adamc@110 86
adamc@140 87 val body : unit -> tag [] html body [] []
adamc@140 88 con bodyTag = fn attrs :: {Type} => ctx ::: {Unit} -> [Body] ~ ctx -> unit
adamc@140 89 -> tag attrs ([Body] ++ ctx) ([Body] ++ ctx) [] []
adamc@141 90 con bodyTagStandalone = fn attrs :: {Type} => ctx ::: {Unit} -> [Body] ~ ctx -> unit
adamc@141 91 -> tag attrs ([Body] ++ ctx) [] [] []
adamc@141 92
adamc@141 93 val br : bodyTagStandalone []
adamc@119 94
adamc@140 95 val p : bodyTag []
adamc@140 96 val b : bodyTag []
adamc@140 97 val i : bodyTag []
adamc@140 98 val font : bodyTag [Size = int, Face = string]
adamc@140 99
adamc@140 100 val h1 : bodyTag []
adamc@140 101 val li : bodyTag []
adamc@140 102
adamc@140 103 val a : bodyTag [Link = page]
adamc@140 104
adamc@141 105 val lform : ctx ::: {Unit} -> [Body] ~ ctx -> bind ::: {Type}
adamc@141 106 -> xml lform [] bind
adamc@141 107 -> xml ([Body] ++ ctx) [] []
adamc@153 108 con lformTag = fn ty :: Type => fn inner :: {Unit} => fn attrs :: {Type} =>
adamc@141 109 ctx ::: {Unit} -> [LForm] ~ ctx
adamc@141 110 -> nm :: Name -> unit
adamc@153 111 -> tag attrs ([LForm] ++ ctx) inner [] [nm = ty]
adamc@153 112 val textbox : lformTag string [] []
adamc@155 113 val password : lformTag string [] []
adamc@153 114 val ltextarea : lformTag string [] []
adamc@153 115
adamc@190 116 val checkbox : lformTag bool [] []
adamc@190 117
adamc@153 118 con radio = [Body, Radio]
adamc@153 119 val radio : lformTag string radio []
adamc@153 120 val radioOption : unit -> tag [Value = string] radio [] [] []
adamc@142 121
adamc@154 122 con select = [Select]
adamc@154 123 val lselect : lformTag string select []
adamc@154 124 val loption : unit -> tag [Value = string] select [] [] []
adamc@154 125
adamc@142 126 val submit : ctx ::: {Unit} -> [LForm] ~ ctx
adamc@142 127 -> use ::: {Type} -> unit
adamc@142 128 -> tag [Action = $use -> page] ([LForm] ++ ctx) ([LForm] ++ ctx) use []