1 |
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2 | var Gun = require('./root');
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3 | Gun.chain.chain = function(){
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4 | var at = this._, chain = new this.constructor(this), cat = chain._;
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5 | cat.root = root = at.root;
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6 | cat.id = ++root._.once;
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7 | cat.back = this;
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8 | cat.on = Gun.on;
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9 | Gun.on('chain', cat);
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10 | cat.on('in', input, cat);
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11 | cat.on('out', output, cat);
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12 | return chain;
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13 | }
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14 | function output(at){
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15 | var cat = this.as, gun = cat.gun, root = gun.back(-1), put, get, now, tmp;
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16 | if(!at.gun){
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17 | at.gun = gun;
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18 | }
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19 | if(get = at.get){
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20 | if(!get[_soul]){
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21 | if(obj_has(get, _field)){
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22 | get = get[_field];
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23 | var next = get? (gun.get(get)._) : cat;
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24 | // TODO: BUG! Handle plural chains by iterating over them.
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25 | if(obj_has(next, 'put')){
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26 |
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27 |
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28 | next.on('in', next);
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29 | return;
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30 | }
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31 | if(obj_has(cat, 'put')){
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32 |
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33 | var val = cat.put, rel;
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34 | if(rel = Gun.node.soul(val)){
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35 | val = Gun.val.rel.ify(rel);
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36 | }
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37 | if(rel = Gun.val.rel.is(val)){
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38 | if(!at.gun._){ return }
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39 | (at.gun._).on('out', {
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40 | get: {'#': rel, '.': get},
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41 | '#': Gun.on.ask(Gun.HAM.synth, at.gun),
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42 | gun: at.gun
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43 | });
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44 | return;
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45 | }
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46 | if(u === val || Gun.val.is(val)){
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47 | if(!at.gun._){ return }
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48 | (at.gun._).on('in', {
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49 | get: get,
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50 | gun: at.gun
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51 | });
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52 | return;
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53 | }
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54 | } else
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55 | if(cat.map){
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56 | obj_map(cat.map, function(proxy){
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57 | proxy.at.on('in', proxy.at);
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58 | });
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59 | }
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60 | if(cat.soul){
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61 | if(!at.gun._){ return }
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62 | (at.gun._).on('out', {
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63 | get: {'#': cat.soul, '.': get},
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64 | '#': Gun.on.ask(Gun.HAM.synth, at.gun),
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65 | gun: at.gun
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66 | });
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67 | return;
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68 | }
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69 | if(cat.get){
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70 | if(!cat.back._){ return }
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71 | (cat.back._).on('out', {
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72 | get: obj_put({}, _field, cat.get),
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73 | gun: gun
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74 | });
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75 | return;
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76 | }
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77 | at = obj_to(at, {get: {}});
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78 | } else {
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79 | if(obj_has(cat, 'put')){
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80 |
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81 | cat.on('in', cat);
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82 | } else
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83 | if(cat.map){
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84 | obj_map(cat.map, function(proxy){
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85 | proxy.at.on('in', proxy.at);
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86 | });
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87 | }
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88 | if(cat.ack){
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89 | if(!obj_has(cat, 'put')){
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90 | return;
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91 | }
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92 | }
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93 | cat.ack = -1;
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94 | if(cat.soul){
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95 | cat.on('out', {
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96 | get: {'#': cat.soul},
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97 | '#': Gun.on.ask(Gun.HAM.synth, cat.gun),
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98 | });
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99 | return;
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100 | }
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101 | if(cat.get){
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102 | if(!cat.back._){ return }
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103 | (cat.back._).on('out', {
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104 | get: obj_put({}, _field, cat.get),
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105 | gun: cat.gun
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106 | });
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107 | return;
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108 | }
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109 | }
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110 | }
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111 | }
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112 | (cat.back._).on('out', at);
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113 | }
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114 | function input(at){
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115 | at = at._ || at;
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116 | var ev = this, cat = this.as, gun = at.gun, coat = gun._, change = at.put, back = cat.back._ || empty, rel, tmp;
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117 | if(0 > cat.ack && at.via && !Gun.val.rel.is(change)){
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118 | cat.ack = 1;
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119 | }
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120 | if(cat.get && at.get !== cat.get){
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121 | at = obj_to(at, {get: cat.get});
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122 | }
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123 | if(cat.field && coat !== cat){
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124 | at = obj_to(at, {gun: cat.gun});
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125 | if(coat.ack){
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126 | cat.ack = cat.ack || coat.ack;
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127 | }
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128 | }
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129 | if(u === change){
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130 | ev.to.next(at);
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131 | if(cat.soul){ return }
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132 | echo(cat, at, ev);
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133 | if(cat.field){
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134 | not(cat, at);
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135 | }
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136 | obj_del(coat.echo, cat.id);
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137 | obj_del(cat.map, coat.id);
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138 | return;
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139 | }
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140 | if(cat.soul){
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141 | ev.to.next(at);
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142 | echo(cat, at, ev);
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143 | obj_map(change, map, {at: at, cat: cat});
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144 | return;
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145 | }
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146 | if(!(rel = Gun.val.rel.is(change))){
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147 | if(Gun.val.is(change)){
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148 | if(cat.field || cat.soul){
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149 | not(cat, at);
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150 | } else
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151 | if(coat.field || coat.soul){
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152 | (coat.echo || (coat.echo = {}))[cat.id] = cat;
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153 | (cat.map || (cat.map = {}))[coat.id] = cat.map[coat.id] || {at: coat};
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154 |
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155 | }
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156 | ev.to.next(at);
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157 | echo(cat, at, ev);
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158 | return;
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159 | }
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160 | if(cat.field && coat !== cat && obj_has(coat, 'put')){
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161 | cat.put = coat.put;
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162 | };
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163 | if((rel = Gun.node.soul(change)) && coat.field){
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164 | coat.put = (cat.root.get(rel)._).put;
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165 | }
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166 | ev.to.next(at);
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167 | echo(cat, at, ev);
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168 | relate(cat, at, coat, rel);
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169 | obj_map(change, map, {at: at, cat: cat});
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170 | return;
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171 | }
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172 | relate(cat, at, coat, rel);
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173 | ev.to.next(at);
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174 | echo(cat, at, ev);
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175 | }
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176 | Gun.chain.chain.input = input;
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177 | function relate(cat, at, coat, rel){
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178 | if(!rel || node_ === cat.get){ return }
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179 | var tmp = (cat.root.get(rel)._);
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180 | if(cat.field){
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181 | coat = tmp;
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182 | } else
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183 | if(coat.field){
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184 | relate(coat, at, coat, rel);
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185 | }
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186 | if(coat === cat){ return }
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187 | (coat.echo || (coat.echo = {}))[cat.id] = cat;
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188 | if(cat.field && !(cat.map||empty)[coat.id]){
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189 | not(cat, at);
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190 | }
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191 | tmp = (cat.map || (cat.map = {}))[coat.id] = cat.map[coat.id] || {at: coat};
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192 | if(rel !== tmp.rel){
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193 | ask(cat, tmp.rel = rel);
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194 | }
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195 | }
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196 | function echo(cat, at, ev){
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197 | if(!cat.echo){ return }
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198 | if(cat.field){ at = obj_to(at, {event: ev}) }
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199 | obj_map(cat.echo, reverb, at);
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200 | }
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201 | function reverb(cat){
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202 | cat.on('in', this);
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203 | }
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204 | function map(data, key){
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205 | var cat = this.cat, next = cat.next || empty, via = this.at, gun, chain, at, tmp;
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206 | if(node_ === key && !next[key]){ return }
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207 | if(!(gun = next[key])){
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208 | return;
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209 | }
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210 | at = (gun._);
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211 |
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212 |
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213 |
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214 | if(at.field){
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215 | if(!(data && data[_soul] && Gun.val.rel.is(data) === Gun.node.soul(at.put))){
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216 | at.put = data;
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217 | }
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218 | chain = gun;
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219 | } else {
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220 | chain = via.gun.get(key);
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221 | }
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222 | at.on('in', {
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223 | put: data,
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224 | get: key,
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225 | gun: chain,
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226 | via: via
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227 | });
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228 | }
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229 | function not(cat, at){
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230 | if(!(cat.field || cat.soul)){ return }
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231 | var tmp = cat.map;
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232 | cat.map = null;
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233 | if(null === tmp){ return }
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234 | if(u === tmp && cat.put !== u){ return }
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235 | obj_map(tmp, function(proxy){
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236 | if(!(proxy = proxy.at)){ return }
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237 | obj_del(proxy.echo, cat.id);
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238 | });
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239 | obj_map(cat.next, function(gun, key){
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240 | var coat = (gun._);
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241 | coat.put = u;
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242 | if(coat.ack){
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243 | coat.ack = -1;
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244 | }
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245 | coat.on('in', {
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246 | get: key,
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247 | gun: gun,
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248 | put: u
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249 | });
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250 | });
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251 | }
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252 | function ask(cat, soul){
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253 | var tmp = (cat.root.get(soul)._);
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254 | if(cat.ack){
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255 | tmp.ack = tmp.ack || -1;
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256 | tmp.on('out', {
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257 | get: {'#': soul},
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258 | '#': Gun.on.ask(Gun.HAM.synth, tmp.gun),
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259 | gun: tmp.gun
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260 | });
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261 | return;
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262 | }
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263 | obj_map(cat.next, function(gun, key){
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264 | (gun._).on('out', {
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265 | get: {'#': soul, '.': key},
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266 | '#': Gun.on.ask(Gun.HAM.synth, tmp.gun),
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267 | gun: gun
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268 | });
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269 | });
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270 | }
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271 | var empty = {}, u;
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272 | var obj = Gun.obj, obj_has = obj.has, obj_put = obj.put, obj_del = obj.del, obj_to = obj.to, obj_map = obj.map;
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273 | var _soul = Gun._.soul, _field = Gun._.field, node_ = Gun.node._;
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274 | |
\ | No newline at end of file |