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'read' type class
author Adam Chlipala <adamc@hcoop.net>
date Sun, 07 Sep 2008 11:53:30 -0400
parents 0cc956a3216f
children 6e665c7c96f6
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@288 9 datatype option t = None | Some of t
adamc@284 10
adamc@91 11
adamc@256 12 (** Basic type classes *)
adamc@256 13
adamc@256 14 class eq
adamc@256 15 val eq : t ::: Type -> eq t -> t -> t -> bool
adamc@257 16 val ne : t ::: Type -> eq t -> t -> t -> bool
adamc@256 17 val eq_int : eq int
adamc@256 18 val eq_string : eq string
adamc@256 19 val eq_bool : eq bool
adamc@256 20
adamc@256 21
adamc@283 22 (** String operations *)
adamc@283 23
adamc@283 24 val strcat : string -> string -> string
adamc@283 25
adamc@286 26 class show
adamc@286 27 val show : t ::: Type -> show t -> t -> string
adamc@286 28 val show_int : show int
adamc@286 29 val show_float : show float
adamc@286 30 val show_string : show string
adamc@286 31 val show_bool : show bool
adamc@286 32
adamc@290 33 class read
adamc@290 34 val read : t ::: Type -> read t -> string -> option t
adamc@290 35 val read_int : read int
adamc@290 36 val read_float : read float
adamc@290 37 val read_string : read string
adamc@290 38 val read_bool : read bool
adamc@288 39
adamc@283 40
adamc@203 41 (** SQL *)
adamc@203 42
adamc@203 43 con sql_table :: {Type} -> Type
adamc@203 44
adamc@204 45 (*** Queries *)
adamc@204 46
adamc@233 47 con sql_query :: {{Type}} -> {Type} -> Type
adamc@233 48 con sql_query1 :: {{Type}} -> {{Type}} -> {Type} -> Type
adamc@234 49 con sql_exp :: {{Type}} -> {{Type}} -> {Type} -> Type -> Type
adamc@204 50
adamc@223 51 con sql_subset :: {{Type}} -> {{Type}} -> Type
adamc@223 52 val sql_subset : keep_drop :: {({Type} * {Type})}
adamc@223 53 -> sql_subset
adamc@223 54 (fold (fn nm => fn fields :: ({Type} * {Type}) => fn acc =>
adamc@223 55 [nm] ~ acc => fields.1 ~ fields.2 =>
adamc@223 56 [nm = fields.1 ++ fields.2] ++ acc) [] keep_drop)
adamc@223 57 (fold (fn nm => fn fields :: ({Type} * {Type}) => fn acc =>
adamc@223 58 [nm] ~ acc =>
adamc@223 59 [nm = fields.1] ++ acc) [] keep_drop)
adamc@223 60 val sql_subset_all : tables :: {{Type}}
adamc@223 61 -> sql_subset tables tables
adamc@223 62
adamc@229 63 val sql_query1 : tables ::: {{Type}}
adamc@224 64 -> grouped ::: {{Type}}
adamc@233 65 -> selectedFields ::: {{Type}}
adamc@233 66 -> selectedExps ::: {Type}
adamc@223 67 -> {From : $(fold (fn nm => fn fields :: {Type} => fn acc =>
adamc@223 68 [nm] ~ acc => [nm = sql_table fields] ++ acc) [] tables),
adamc@234 69 Where : sql_exp tables [] [] bool,
adamc@224 70 GroupBy : sql_subset tables grouped,
adamc@234 71 Having : sql_exp grouped tables [] bool,
adamc@233 72 SelectFields : sql_subset grouped selectedFields,
adamc@233 73 SelectExps : $(fold (fn nm => fn t :: Type => fn acc =>
adamc@234 74 [nm] ~ acc => [nm = sql_exp grouped tables [] t] ++ acc) [] selectedExps) }
adamc@233 75 -> sql_query1 tables selectedFields selectedExps
adamc@229 76
adamc@229 77 type sql_relop
adamc@229 78 val sql_union : sql_relop
adamc@229 79 val sql_intersect : sql_relop
adamc@229 80 val sql_except : sql_relop
adamc@260 81 val sql_relop : tables1 ::: {{Type}}
adamc@229 82 -> tables2 ::: {{Type}}
adamc@233 83 -> selectedFields ::: {{Type}}
adamc@233 84 -> selectedExps ::: {Type}
adamc@260 85 -> sql_relop
adamc@233 86 -> sql_query1 tables1 selectedFields selectedExps
adamc@233 87 -> sql_query1 tables2 selectedFields selectedExps
adamc@233 88 -> sql_query1 selectedFields selectedFields selectedExps
adamc@229 89
adamc@230 90 type sql_direction
adamc@230 91 val sql_asc : sql_direction
adamc@230 92 val sql_desc : sql_direction
adamc@230 93
adamc@234 94 con sql_order_by :: {{Type}} -> {Type} -> Type
adamc@234 95 val sql_order_by_Nil : tables ::: {{Type}} -> exps :: {Type} -> sql_order_by tables exps
adamc@234 96 val sql_order_by_Cons : tables ::: {{Type}} -> exps ::: {Type} -> t ::: Type
adamc@268 97 -> sql_exp tables [] exps t -> sql_direction -> sql_order_by tables exps
adamc@234 98 -> sql_order_by tables exps
adamc@230 99
adamc@231 100 type sql_limit
adamc@231 101 val sql_no_limit : sql_limit
adamc@231 102 val sql_limit : int -> sql_limit
adamc@231 103
adamc@232 104 type sql_offset
adamc@232 105 val sql_no_offset : sql_offset
adamc@232 106 val sql_offset : int -> sql_offset
adamc@232 107
adamc@229 108 val sql_query : tables ::: {{Type}}
adamc@233 109 -> selectedFields ::: {{Type}}
adamc@233 110 -> selectedExps ::: {Type}
adamc@233 111 -> {Rows : sql_query1 tables selectedFields selectedExps,
adamc@234 112 OrderBy : sql_order_by tables selectedExps,
adamc@232 113 Limit : sql_limit,
adamc@232 114 Offset : sql_offset}
adamc@233 115 -> sql_query selectedFields selectedExps
adamc@204 116
adamc@225 117 val sql_field : otherTabs ::: {{Type}} -> otherFields ::: {Type} -> fieldType ::: Type -> agg ::: {{Type}}
adamc@234 118 -> exps ::: {Type}
adamc@221 119 -> tab :: Name -> field :: Name
adamc@234 120 -> sql_exp ([tab = [field = fieldType] ++ otherFields] ++ otherTabs) agg exps fieldType
adamc@234 121
adamc@234 122 val sql_exp : tabs ::: {{Type}} -> agg ::: {{Type}} -> t ::: Type -> rest ::: {Type} -> nm :: Name
adamc@234 123 -> sql_exp tabs agg ([nm = t] ++ rest) t
adamc@209 124
adamc@221 125 class sql_injectable
adamc@221 126 val sql_bool : sql_injectable bool
adamc@221 127 val sql_int : sql_injectable int
adamc@221 128 val sql_float : sql_injectable float
adamc@221 129 val sql_string : sql_injectable string
adamc@234 130 val sql_inject : tables ::: {{Type}} -> agg ::: {{Type}} -> exps ::: {Type} -> t ::: Type
adamc@234 131 -> sql_injectable t -> t -> sql_exp tables agg exps t
adamc@209 132
adamc@220 133 con sql_unary :: Type -> Type -> Type
adamc@220 134 val sql_not : sql_unary bool bool
adamc@234 135 val sql_unary : tables ::: {{Type}} -> agg ::: {{Type}} -> exps ::: {Type} -> arg ::: Type -> res ::: Type
adamc@234 136 -> sql_unary arg res -> sql_exp tables agg exps arg -> sql_exp tables agg exps res
adamc@220 137
adamc@220 138 con sql_binary :: Type -> Type -> Type -> Type
adamc@220 139 val sql_and : sql_binary bool bool bool
adamc@220 140 val sql_or : sql_binary bool bool bool
adamc@234 141 val sql_binary : tables ::: {{Type}} -> agg ::: {{Type}} -> exps ::: {Type}
adamc@234 142 -> arg1 ::: Type -> arg2 ::: Type -> res ::: Type
adamc@234 143 -> sql_binary arg1 arg2 res -> sql_exp tables agg exps arg1 -> sql_exp tables agg exps arg2
adamc@234 144 -> sql_exp tables agg exps res
adamc@220 145
adamc@219 146 type sql_comparison
adamc@219 147 val sql_eq : sql_comparison
adamc@219 148 val sql_ne : sql_comparison
adamc@219 149 val sql_lt : sql_comparison
adamc@219 150 val sql_le : sql_comparison
adamc@219 151 val sql_gt : sql_comparison
adamc@219 152 val sql_ge : sql_comparison
adamc@253 153 val sql_comparison : tables ::: {{Type}} -> agg ::: {{Type}} -> exps ::: {Type}
adamc@236 154 -> t ::: Type
adamc@253 155 -> sql_comparison
adamc@234 156 -> sql_exp tables agg exps t -> sql_exp tables agg exps t
adamc@234 157 -> sql_exp tables agg exps bool
adamc@203 158
adamc@235 159 val sql_count : tables ::: {{Type}} -> agg ::: {{Type}} -> exps ::: {Type}
adamc@235 160 -> unit -> sql_exp tables agg exps int
adamc@235 161
adamc@236 162 con sql_aggregate :: Type -> Type
adamc@236 163 val sql_aggregate : tables ::: {{Type}} -> agg ::: {{Type}} -> exps ::: {Type} -> t ::: Type
adamc@236 164 -> sql_aggregate t -> sql_exp agg agg exps t -> sql_exp tables agg exps t
adamc@236 165
adamc@236 166 class sql_summable
adamc@236 167 val sql_summable_int : sql_summable int
adamc@236 168 val sql_summable_float : sql_summable float
adamc@236 169 val sql_avg : t ::: Type -> sql_summable t -> sql_aggregate t
adamc@236 170 val sql_sum : t ::: Type -> sql_summable t -> sql_aggregate t
adamc@236 171
adamc@236 172 class sql_maxable
adamc@236 173 val sql_maxable_int : sql_maxable int
adamc@236 174 val sql_maxable_float : sql_maxable float
adamc@236 175 val sql_maxable_string : sql_maxable string
adamc@236 176 val sql_max : t ::: Type -> sql_maxable t -> sql_aggregate t
adamc@236 177 val sql_min : t ::: Type -> sql_maxable t -> sql_aggregate t
adamc@236 178
adamc@235 179
adamc@243 180 (*** Executing queries *)
adamc@243 181
adamc@243 182 con transaction :: Type -> Type
adamc@243 183 val return : t ::: Type
adamc@243 184 -> t -> transaction t
adamc@243 185 val bind : t1 ::: Type -> t2 ::: Type
adamc@243 186 -> transaction t1 -> (t1 -> transaction t2)
adamc@243 187 -> transaction t2
adamc@243 188
adamc@251 189 val query : tables ::: {{Type}} -> exps ::: {Type} -> tables ~ exps
adamc@252 190 -> state ::: Type
adamc@243 191 -> sql_query tables exps
adamc@251 192 -> ($(exps ++ fold (fn nm (fields :: {Type}) acc => [nm] ~ acc => [nm = $fields] ++ acc) [] tables)
adamc@243 193 -> state
adamc@243 194 -> transaction state)
adamc@243 195 -> state
adamc@243 196 -> transaction state
adamc@243 197
adamc@243 198
adamc@203 199 (** XML *)
adamc@203 200
adamc@139 201 con tag :: {Type} -> {Unit} -> {Unit} -> {Type} -> {Type} -> Type
adamc@91 202
adamc@91 203
adamc@139 204 con xml :: {Unit} -> {Type} -> {Type} -> Type
adamc@141 205 val cdata : ctx ::: {Unit} -> use ::: {Type} -> string -> xml ctx use []
adamc@104 206 val tag : attrsGiven ::: {Type} -> attrsAbsent ::: {Type} -> attrsGiven ~ attrsAbsent
adamc@139 207 -> ctxOuter ::: {Unit} -> ctxInner ::: {Unit}
adamc@139 208 -> useOuter ::: {Type} -> useInner ::: {Type} -> useOuter ~ useInner
adamc@139 209 -> bindOuter ::: {Type} -> bindInner ::: {Type} -> bindOuter ~ bindInner
adamc@104 210 -> $attrsGiven
adamc@139 211 -> tag (attrsGiven ++ attrsAbsent) ctxOuter ctxInner useOuter bindOuter
adamc@139 212 -> xml ctxInner useInner bindInner
adamc@139 213 -> xml ctxOuter (useOuter ++ useInner) (bindOuter ++ bindInner)
adamc@140 214 val join : ctx ::: {Unit}
adamc@139 215 -> use1 ::: {Type} -> bind1 ::: {Type} -> bind2 ::: {Type}
adamc@139 216 -> use1 ~ bind1 -> bind1 ~ bind2
adamc@140 217 -> xml ctx use1 bind1
adamc@140 218 -> xml ctx (use1 ++ bind1) bind2
adamc@140 219 -> xml ctx use1 (bind1 ++ bind2)
adamc@148 220 val useMore : ctx ::: {Unit} -> use1 ::: {Type} -> use2 ::: {Type} -> bind ::: {Type}
adamc@148 221 -> use1 ~ use2
adamc@148 222 -> xml ctx use1 bind
adamc@148 223 -> xml ctx (use1 ++ use2) bind
adamc@91 224
adamc@110 225 con xhtml = xml [Html]
adamc@139 226 con page = xhtml [] []
adamc@110 227
adamc@204 228 (*** HTML details *)
adamc@204 229
adamc@140 230 con html = [Html]
adamc@140 231 con head = [Head]
adamc@140 232 con body = [Body]
adamc@141 233 con lform = [Body, LForm]
adamc@93 234
adamc@140 235 val head : unit -> tag [] html head [] []
adamc@140 236 val title : unit -> tag [] head [] [] []
adamc@110 237
adamc@140 238 val body : unit -> tag [] html body [] []
adamc@140 239 con bodyTag = fn attrs :: {Type} => ctx ::: {Unit} -> [Body] ~ ctx -> unit
adamc@140 240 -> tag attrs ([Body] ++ ctx) ([Body] ++ ctx) [] []
adamc@141 241 con bodyTagStandalone = fn attrs :: {Type} => ctx ::: {Unit} -> [Body] ~ ctx -> unit
adamc@141 242 -> tag attrs ([Body] ++ ctx) [] [] []
adamc@141 243
adamc@141 244 val br : bodyTagStandalone []
adamc@119 245
adamc@140 246 val p : bodyTag []
adamc@140 247 val b : bodyTag []
adamc@140 248 val i : bodyTag []
adamc@140 249 val font : bodyTag [Size = int, Face = string]
adamc@140 250
adamc@140 251 val h1 : bodyTag []
adamc@140 252 val li : bodyTag []
adamc@140 253
adamc@280 254 val a : bodyTag [Link = transaction page]
adamc@140 255
adamc@141 256 val lform : ctx ::: {Unit} -> [Body] ~ ctx -> bind ::: {Type}
adamc@141 257 -> xml lform [] bind
adamc@141 258 -> xml ([Body] ++ ctx) [] []
adamc@153 259 con lformTag = fn ty :: Type => fn inner :: {Unit} => fn attrs :: {Type} =>
adamc@141 260 ctx ::: {Unit} -> [LForm] ~ ctx
adamc@141 261 -> nm :: Name -> unit
adamc@153 262 -> tag attrs ([LForm] ++ ctx) inner [] [nm = ty]
adamc@153 263 val textbox : lformTag string [] []
adamc@155 264 val password : lformTag string [] []
adamc@153 265 val ltextarea : lformTag string [] []
adamc@153 266
adamc@190 267 val checkbox : lformTag bool [] []
adamc@190 268
adamc@153 269 con radio = [Body, Radio]
adamc@153 270 val radio : lformTag string radio []
adamc@153 271 val radioOption : unit -> tag [Value = string] radio [] [] []
adamc@142 272
adamc@154 273 con select = [Select]
adamc@154 274 val lselect : lformTag string select []
adamc@154 275 val loption : unit -> tag [Value = string] select [] [] []
adamc@154 276
adamc@142 277 val submit : ctx ::: {Unit} -> [LForm] ~ ctx
adamc@142 278 -> use ::: {Type} -> unit
adamc@280 279 -> tag [Action = $use -> transaction page] ([LForm] ++ ctx) ([LForm] ++ ctx) use []
adamc@283 280
adamc@283 281
adamc@283 282 (** Aborting *)
adamc@283 283
adamc@283 284 val error : t ::: Type -> xml [Body] [] [] -> t