| iproctor | 9a41a0c | 2007-07-16 21:59:24 +0000 | [diff] [blame^] | 1 | open Thrift |
| 2 | |
| 3 | module P = Protocol |
| 4 | |
| 5 | let get_byte i b = 255 land (i lsr (8*b)) |
| 6 | let get_byte64 i b = 255 land (Int64.to_int (Int64.shift_right i (8*b))) |
| 7 | |
| 8 | |
| 9 | let tv = P.t_type_to_i |
| 10 | let vt = P.t_type_of_i |
| 11 | |
| 12 | |
| 13 | let comp_int b n = |
| 14 | let s = ref 0 in |
| 15 | let sb = Sys.word_size - 8*n in |
| 16 | for i=0 to (n-1) do |
| 17 | s:=!s lor ((int_of_char b.[i]) lsl (8*(n-1-i))) |
| 18 | done; |
| 19 | s:=(!s lsl sb) asr sb; |
| 20 | !s |
| 21 | |
| 22 | let comp_int64 b n = |
| 23 | let s = ref 0L in |
| 24 | for i=0 to (n-1) do |
| 25 | s:=Int64.logor !s (Int64.shift_left (Int64.of_int (int_of_char b.[i])) (8*(n-1-i))) |
| 26 | done; |
| 27 | !s |
| 28 | |
| 29 | class t trans = |
| 30 | object (self) |
| 31 | inherit P.t trans |
| 32 | val ibyte = String.create 8 |
| 33 | method writeBool b = |
| 34 | ibyte.[0] <- char_of_int (if b then 1 else 0); |
| 35 | trans#write ibyte 0 1 |
| 36 | method writeByte i = |
| 37 | ibyte.[0] <- char_of_int (get_byte i 0); |
| 38 | trans#write ibyte 0 1 |
| 39 | method writeI16 i = |
| 40 | let gb = get_byte i in |
| 41 | ibyte.[1] <- char_of_int (gb 0); |
| 42 | ibyte.[0] <- char_of_int (gb 1); |
| 43 | trans#write ibyte 0 2 |
| 44 | method writeI32 i = |
| 45 | let gb = get_byte i in |
| 46 | for i=0 to 3 do |
| 47 | ibyte.[3-i] <- char_of_int (gb i) |
| 48 | done; |
| 49 | trans#write ibyte 0 4 |
| 50 | method writeI64 i= |
| 51 | let gb = get_byte64 i in |
| 52 | for i=0 to 7 do |
| 53 | ibyte.[7-i] <- char_of_int (gb i) |
| 54 | done; |
| 55 | trans#write ibyte 0 8 |
| 56 | method writeDouble d = |
| 57 | self#writeI64 (Int64.bits_of_float d) |
| 58 | method writeString s= |
| 59 | let n = String.length s in |
| 60 | self#writeI32(n); |
| 61 | trans#write s 0 n |
| 62 | method writeBinary a = self#writeString a |
| 63 | method writeMessageBegin (n,t,s) = |
| 64 | self#writeString n; |
| 65 | self#writeByte (P.message_type_to_i t); |
| 66 | self#writeI32 s |
| 67 | method writeMessageEnd = () |
| 68 | method writeStructBegin s = () |
| 69 | method writeStructEnd = () |
| 70 | method writeFieldBegin (n,t,i) = |
| 71 | self#writeByte (tv t); |
| 72 | self#writeI16 i |
| 73 | method writeFieldEnd = () |
| 74 | method writeFieldStop = |
| 75 | self#writeByte (tv (Protocol.T_STOP)) |
| 76 | method writeMapBegin (k,v,s) = |
| 77 | self#writeByte (tv k); |
| 78 | self#writeByte (tv v); |
| 79 | self#writeI32 s |
| 80 | method writeMapEnd = () |
| 81 | method writeListBegin (t,s) = |
| 82 | self#writeByte (tv t); |
| 83 | self#writeI32 s |
| 84 | method writeListEnd = () |
| 85 | method writeSetBegin (t,s) = |
| 86 | self#writeByte (tv t); |
| 87 | self#writeI32 s |
| 88 | method writeSetEnd = () |
| 89 | method readByte = |
| 90 | ignore (trans#readAll ibyte 0 1); |
| 91 | (comp_int ibyte 1) |
| 92 | method readI16 = |
| 93 | ignore (trans#readAll ibyte 0 2); |
| 94 | comp_int ibyte 2 |
| 95 | method readI32 = |
| 96 | ignore (trans#readAll ibyte 0 4); |
| 97 | comp_int ibyte 4 |
| 98 | method readI64 = |
| 99 | ignore (trans#readAll ibyte 0 8); |
| 100 | comp_int64 ibyte 8 |
| 101 | method readDouble = |
| 102 | Int64.float_of_bits (self#readI64) |
| 103 | method readBool = |
| 104 | self#readByte = 1 |
| 105 | method readString = |
| 106 | let sz = self#readI32 in |
| 107 | let buf = String.create sz in |
| 108 | ignore (trans#readAll buf 0 sz); |
| 109 | buf |
| 110 | method readBinary = self#readString |
| 111 | method readMessageBegin = |
| 112 | let s = self#readString in |
| 113 | let mt = P.message_type_of_i (self#readByte) in |
| 114 | (s,mt, self#readI32) |
| 115 | method readMessageEnd = () |
| 116 | method readStructBegin = |
| 117 | "" |
| 118 | method readStructEnd = () |
| 119 | method readFieldBegin = |
| 120 | let t = (vt (self#readByte)) |
| 121 | in |
| 122 | if t != P.T_STOP then |
| 123 | ("",t,self#readI16) |
| 124 | else ("",t,0); |
| 125 | method readFieldEnd = () |
| 126 | method readMapBegin = |
| 127 | let kt = vt (self#readByte) in |
| 128 | let vt = vt (self#readByte) in |
| 129 | (kt,vt, self#readI32) |
| 130 | method readMapEnd = () |
| 131 | method readListBegin = |
| 132 | let t = vt (self#readByte) in |
| 133 | (t,self#readI32) |
| 134 | method readListEnd = () |
| 135 | method readSetBegin = |
| 136 | let t = vt (self#readByte) in |
| 137 | (t, self#readI32); |
| 138 | method readSetEnd = () |
| 139 | end |
| 140 | |
| 141 | class factory = |
| 142 | object |
| 143 | inherit P.factory |
| 144 | method getProtocol tr = new t tr |
| 145 | end |