1 |
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2 |
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3 | var token = exports.token = new Array(256);
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4 |
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5 | var format = require("./read-format").format;
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6 |
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7 | init();
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8 |
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9 | function init() {
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10 | var i;
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11 |
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12 |
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13 | for (i = 0x00; i <= 0x7f; i++) {
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14 | token[i] = constant(i);
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15 | }
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16 |
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17 |
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18 | for (i = 0x80; i <= 0x8f; i++) {
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19 | token[i] = fix(i - 0x80, format.map);
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20 | }
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21 |
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22 |
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23 | for (i = 0x90; i <= 0x9f; i++) {
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24 | token[i] = fix(i - 0x90, format.array);
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25 | }
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26 |
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27 |
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28 | for (i = 0xa0; i <= 0xbf; i++) {
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29 | token[i] = fix(i - 0xa0, format.str);
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30 | }
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31 |
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32 |
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33 | token[0xc0] = constant(null);
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34 |
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35 |
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36 | token[0xc1] = null;
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37 |
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38 |
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39 |
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40 | token[0xc2] = constant(false);
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41 | token[0xc3] = constant(true);
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42 |
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43 |
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44 |
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45 |
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46 | token[0xc4] = flex(format.uint8, format.bin);
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47 | token[0xc5] = flex(format.uint16, format.bin);
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48 | token[0xc6] = flex(format.uint32, format.bin);
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49 |
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50 |
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51 |
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52 |
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53 | token[0xc7] = flex(format.uint8, format.ext);
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54 | token[0xc8] = flex(format.uint16, format.ext);
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55 | token[0xc9] = flex(format.uint32, format.ext);
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56 |
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57 |
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58 |
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59 | token[0xca] = format.float32;
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60 | token[0xcb] = format.float64;
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61 |
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62 |
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63 |
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64 |
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65 |
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66 | token[0xcc] = format.uint8;
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67 | token[0xcd] = format.uint16;
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68 | token[0xce] = format.uint32;
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69 | token[0xcf] = format.uint64;
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70 |
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71 |
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72 |
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73 |
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74 |
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75 | token[0xd0] = format.int8;
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76 | token[0xd1] = format.int16;
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77 | token[0xd2] = format.int32;
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78 | token[0xd3] = format.int64;
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79 |
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80 |
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81 |
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82 |
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83 |
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84 |
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85 | token[0xd4] = fix(1, format.ext);
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86 | token[0xd5] = fix(2, format.ext);
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87 | token[0xd6] = fix(4, format.ext);
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88 | token[0xd7] = fix(8, format.ext);
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89 | token[0xd8] = fix(16, format.ext);
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90 |
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91 |
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92 |
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93 |
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94 | token[0xd9] = flex(format.uint8, format.str);
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95 | token[0xda] = flex(format.uint16, format.str);
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96 | token[0xdb] = flex(format.uint32, format.str);
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97 |
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98 |
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99 |
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100 | token[0xdc] = flex(format.uint16, format.array);
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101 | token[0xdd] = flex(format.uint32, format.array);
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102 |
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103 |
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104 |
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105 | token[0xde] = flex(format.uint16, format.map);
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106 | token[0xdf] = flex(format.uint32, format.map);
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107 |
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108 |
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109 | for (i = 0xe0; i <= 0xff; i++) {
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110 | token[i] = constant(i - 0x100);
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111 | }
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112 | }
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113 |
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114 | function constant(value) {
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115 | return function() {
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116 | return value;
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117 | };
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118 | }
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119 |
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120 | function flex(lenFunc, decodeFunc) {
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121 | return function(decoder) {
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122 | var len = lenFunc(decoder);
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123 | return decodeFunc(decoder, len);
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124 | };
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125 | }
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126 |
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127 | function fix(len, method) {
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128 | return function(decoder) {
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129 | return method(decoder, len);
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130 | };
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131 | }
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