1 | package com.framsticks.structure; |
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2 | |
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3 | import java.util.HashSet; |
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4 | import java.util.List; |
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5 | import java.util.Set; |
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6 | |
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7 | import javax.annotation.Nonnull; |
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8 | |
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9 | import org.apache.logging.log4j.Logger; |
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10 | import org.apache.logging.log4j.LogManager; |
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11 | |
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12 | import com.framsticks.communication.File; |
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13 | import com.framsticks.params.Access; |
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14 | import com.framsticks.params.CompositeParam; |
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15 | import com.framsticks.params.EventListener; |
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16 | import com.framsticks.params.FramsClass; |
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17 | import com.framsticks.params.ListAccess; |
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18 | import com.framsticks.params.Param; |
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19 | import com.framsticks.params.ParamBuilder; |
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20 | import com.framsticks.params.PrimitiveParam; |
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21 | import com.framsticks.params.PropertiesAccess; |
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22 | import com.framsticks.params.UniqueListAccess; |
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23 | import com.framsticks.params.ParamsUtil; |
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24 | import com.framsticks.params.types.EventParam; |
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25 | import com.framsticks.params.types.ObjectParam; |
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26 | import com.framsticks.params.types.ProcedureParam; |
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27 | import com.framsticks.parsers.Loaders; |
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28 | import com.framsticks.parsers.MultiParamLoader; |
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29 | import com.framsticks.util.FramsticksException; |
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30 | import com.framsticks.util.dispatching.Dispatching; |
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31 | import com.framsticks.util.dispatching.FutureHandler; |
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32 | import com.framsticks.util.dispatching.Future; |
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33 | import com.framsticks.util.dispatching.RunAt; |
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34 | |
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35 | import static com.framsticks.params.ParamsUtil.getParam; |
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36 | |
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37 | import static com.framsticks.util.dispatching.Dispatching.*; |
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38 | |
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39 | public final class TreeOperations { |
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40 | |
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41 | private static final Logger log = LogManager.getLogger(TreeOperations.class); |
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42 | |
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43 | private TreeOperations() { |
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44 | } |
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45 | |
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46 | public static final SideNoteKey<Boolean> FETCHED_MARK = SideNoteKey.make(Boolean.class); |
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47 | |
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48 | public static @Nonnull FramsClass processFetchedInfo(Tree tree, File file) { |
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49 | assert tree.isActive(); |
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50 | FramsClass framsClass = Loaders.loadFramsClass(file.getContent()); |
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51 | log.debug("process fetched info for {}: {}", tree, framsClass); |
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52 | tree.putInfoIntoCache(framsClass); |
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53 | return framsClass; |
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54 | } |
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55 | |
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56 | public static Path create(Path path) { |
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57 | assert !path.isResolved(); |
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58 | |
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59 | Access access = path.getTree().prepareAccess(path.getTop().getParam()); |
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60 | Object child = createAccessee(path.getTree(), access); |
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61 | assert child != null; |
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62 | if (path.size() == 1) { |
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63 | path.getTree().assignRootObject(child); |
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64 | } else { |
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65 | Access parentAccess = bindAccess(path.getUnder()); |
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66 | |
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67 | /** this special case is not very good - maybe hide it in createAccessee? */ |
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68 | if (parentAccess instanceof UniqueListAccess) { |
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69 | access.select(child); |
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70 | access.set(((UniqueListAccess) parentAccess).getUidName(), path.getTop().getParam().getId()); |
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71 | } |
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72 | |
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73 | parentAccess.set(path.getTop().getParam(), child); |
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74 | } |
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75 | path = path.appendResolution(child); |
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76 | return path; |
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77 | } |
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78 | |
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79 | public static void processFetchedValues(final Path path, final List<File> files, final Access access, final FutureHandler<Path> future) { |
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80 | assert files.size() == 1; |
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81 | assert path.isTheSame(files.get(0).getPath()); |
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82 | |
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83 | try { |
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84 | log.debug("process fetched values: {}", path); |
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85 | final Access parsingAccess = new PropertiesAccess(access.getFramsClass()); |
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86 | final List<Object> results = MultiParamLoader.loadAll(files.get(0).getContent(), parsingAccess); |
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87 | |
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88 | Dispatching.dispatchIfNotActive(path.getTree(), new RunAt<Tree>(future) { |
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89 | @Override |
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90 | protected void runAt() { |
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91 | |
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92 | Path result = path.tryResolveIfNeeded(); |
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93 | |
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94 | if (!result.isResolved()) { |
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95 | result = create(result); |
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96 | } |
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97 | |
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98 | if (path.getTop().getParam() instanceof ObjectParam) { |
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99 | assert results.size() == 1; |
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100 | ParamsUtil.takeAllNonNullValues(bindAccess(result), parsingAccess.select(results.get(0))); |
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101 | mark(result.getTree(), result.getTopObject(), FETCHED_MARK, true); |
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102 | future.pass(result); |
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103 | return; |
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104 | } |
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105 | |
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106 | final ListAccess listAccess = (ListAccess) access; |
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107 | |
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108 | listAccess.select(result.getTopObject()); |
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109 | Set<String> oldValuesIds = new HashSet<>(); |
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110 | for (Param p : listAccess.getParams()) { |
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111 | oldValuesIds.add(p.getId()); |
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112 | } |
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113 | |
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114 | Access targetAccess = listAccess.getElementAccess();//.cloneAccess(); |
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115 | |
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116 | int number = 0; |
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117 | for (Object r : results) { |
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118 | |
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119 | parsingAccess.select(r); |
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120 | String id; |
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121 | if (listAccess instanceof UniqueListAccess) { |
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122 | id = parsingAccess.get(((UniqueListAccess) listAccess).getUidName(), String.class); |
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123 | } else { |
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124 | id = Integer.toString(number); |
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125 | } |
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126 | ++number; |
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127 | |
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128 | Object childTo = listAccess.get(id, Object.class); |
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129 | boolean newOne; |
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130 | if (childTo == null) { |
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131 | childTo = createAccessee(result.getTree(), targetAccess); |
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132 | newOne = true; |
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133 | } else { |
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134 | assert oldValuesIds.contains(id); |
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135 | newOne = false; |
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136 | } |
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137 | oldValuesIds.remove(id); |
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138 | |
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139 | targetAccess.select(childTo); |
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140 | ParamsUtil.takeAllNonNullValues(targetAccess, parsingAccess); |
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141 | if (newOne) { |
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142 | listAccess.set(id, childTo); |
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143 | } |
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144 | mark(result.getTree(), childTo, FETCHED_MARK, true); |
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145 | |
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146 | } |
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147 | mark(result.getTree(), result.getTopObject(), FETCHED_MARK, true); |
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148 | |
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149 | /** It looks tricky for ArrayListAccess but should also work. |
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150 | * |
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151 | * They should be sorted. |
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152 | */ |
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153 | for (String id : oldValuesIds) { |
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154 | listAccess.set(id, null); |
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155 | } |
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156 | future.pass(result); |
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157 | } |
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158 | }); |
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159 | |
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160 | } catch (FramsticksException e) { |
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161 | throw new FramsticksException().msg("exception occurred while loading").cause(e); |
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162 | } |
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163 | } |
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164 | |
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165 | public static FramsClass getInfo(Path path) { |
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166 | Tree tree = path.getTree(); |
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167 | assert tree.isActive(); |
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168 | log.debug("get info for: {}", path); |
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169 | final String name = path.getTop().getParam().getContainedTypeName(); |
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170 | return tree.getInfoFromCache(name); |
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171 | } |
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172 | |
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173 | public static void findInfo(final Path path, final FutureHandler<FramsClass> future) { |
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174 | log.debug("find info for: {}", path); |
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175 | try { |
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176 | Tree tree = path.getTree(); |
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177 | assert tree.isActive(); |
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178 | final FramsClass framsClass = getInfo(path); |
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179 | if (framsClass != null) { |
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180 | future.pass(framsClass); |
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181 | return; |
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182 | } |
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183 | tree.info(path, future); |
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184 | } catch (FramsticksException e) { |
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185 | future.handle(e); |
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186 | } |
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187 | } |
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188 | |
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189 | public static @Nonnull |
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190 | Access bindAccessFromSideNote(Tree tree, Object object) { |
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191 | CompositeParam param = tree.getSideNote(object, Path.OBJECT_PARAM_KEY); |
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192 | if (param == null) { |
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193 | throw new FramsticksException().msg("failed to bind access from side node").arg("tree", tree).arg("object", object).arg("type", object.getClass()); |
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194 | } |
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195 | return tree.prepareAccess(param).select(object); |
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196 | } |
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197 | |
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198 | public static @Nonnull |
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199 | Access bindAccess(Tree tree, String path) { |
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200 | log.debug("bind access for textual: {} in {}", path, tree); |
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201 | return bindAccess(Path.to(tree, path)); |
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202 | } |
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203 | |
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204 | public static @Nonnull |
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205 | Access bindAccess(Node node) { |
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206 | Tree tree = node.getTree(); |
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207 | assert tree.isActive(); |
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208 | assert node.getObject() != null; |
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209 | |
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210 | try { |
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211 | Access access = tree.prepareAccess(node.getParam()); |
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212 | tree.putSideNote(node.getObject(), Path.OBJECT_PARAM_KEY, node.getParam()); |
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213 | |
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214 | return access.select(node.getObject()); |
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215 | } catch (FramsticksException e) { |
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216 | throw new FramsticksException().msg("failed to prepare access for param").arg("param", node.getParam()).cause(e); |
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217 | // log.error("failed to bind access for {}: ", node.getParam(), e); |
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218 | } |
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219 | } |
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220 | |
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221 | public static @Nonnull |
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222 | Access bindAccess(Path path) { |
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223 | assert path.getTree().isActive(); |
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224 | path.assureResolved(); |
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225 | log.debug("bind access for: {}", path); |
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226 | return bindAccess(path.getTop()); |
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227 | } |
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228 | |
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229 | public static void set(final Path path, final PrimitiveParam<?> param, final Object value, final FutureHandler<Integer> future) { |
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230 | final Tree tree = path.getTree(); |
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231 | |
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232 | dispatchIfNotActive(tree, new RunAt<Tree>(future) { |
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233 | @Override |
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234 | protected void runAt() { |
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235 | tree.set(path, param, value, future); |
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236 | } |
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237 | }); |
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238 | } |
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239 | |
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240 | public static <R> void call(final Path path, final String procedureName, final Object[] arguments, final Class<R> resultType, final FutureHandler<R> future) { |
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241 | final Tree tree = path.getTree(); |
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242 | |
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243 | dispatchIfNotActive(tree, new RunAt<Tree>(future) { |
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244 | @Override |
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245 | protected void runAt() { |
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246 | path.assureResolved(); |
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247 | tree.call(path, getParam(path, procedureName, ProcedureParam.class), arguments, resultType, future); |
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248 | } |
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249 | }); |
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250 | } |
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251 | |
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252 | public static <R> void call(final Path path, final ProcedureParam param, final Object[] arguments, final Class<R> resultType, final FutureHandler<R> future) { |
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253 | final Tree tree = path.getTree(); |
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254 | |
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255 | dispatchIfNotActive(tree, new RunAt<Tree>(future) { |
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256 | @Override |
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257 | protected void runAt() { |
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258 | tree.call(path, param, arguments, resultType, future); |
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259 | } |
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260 | }); |
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261 | } |
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262 | |
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263 | public static <A> void addListener(final Path path, final EventParam param, final EventListener<A> listener, final Class<A> argument, final FutureHandler<Void> future) { |
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264 | final Tree tree = path.getTree(); |
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265 | |
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266 | dispatchIfNotActive(tree, new RunAt<Tree>(future) { |
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267 | @Override |
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268 | protected void runAt() { |
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269 | tree.addListener(path, param, listener, argument, future); |
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270 | } |
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271 | }); |
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272 | } |
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273 | |
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274 | public static void removeListener(final Path path, final EventParam param, final EventListener<?> listener, final FutureHandler<Void> future) { |
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275 | final Tree tree = path.getTree(); |
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276 | |
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277 | dispatchIfNotActive(tree, new RunAt<Tree>(future) { |
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278 | @Override |
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279 | protected void runAt() { |
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280 | tree.removeListener(path, param, listener, future); |
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281 | } |
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282 | }); |
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283 | } |
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284 | |
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285 | /** |
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286 | * |
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287 | * If StackOverflow occurs in that loop in LocalTree it is probably caused |
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288 | * the by the fact, that get operation may find the object, but Path resolution |
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289 | * cannot. |
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290 | * */ |
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291 | public static void tryGet(final Tree tree, final String targetPath, final FutureHandler<Path> future) { |
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292 | log.debug("resolve textual: {} for {}", targetPath, tree); |
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293 | dispatchIfNotActive(tree, new RunAt<Tree>(future) { |
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294 | |
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295 | @Override |
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296 | protected void runAt() { |
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297 | final Path path = Path.tryTo(tree, targetPath).tryResolveIfNeeded(); |
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298 | log.debug("found: {}", path); |
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299 | if (path.isResolved()) { |
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300 | future.pass(path); |
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301 | return; |
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302 | } |
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303 | |
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304 | tree.get(path, new Future<Path>(future) { |
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305 | @Override |
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306 | protected void result(Path result) { |
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307 | // if (result.isResolved(targetPath)) { |
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308 | // future.pass(result); |
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309 | // return; |
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310 | // } |
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311 | log.debug("retrying resolve textual: {} for {} with {}", targetPath, tree, result); |
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312 | tryGet(tree, targetPath, future); |
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313 | } |
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314 | }); |
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315 | } |
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316 | }); |
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317 | } |
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318 | |
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319 | public static FramsClass getInfoFromCache(Path path) { |
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320 | assert path.getTree().isActive(); |
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321 | return path.getTree().getInfoFromCache(path.getTop().getParam().getContainedTypeName()); |
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322 | } |
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323 | |
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324 | public static Object createAccessee(Tree tree, CompositeParam param) { |
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325 | Object object = tree.prepareAccess(param).createAccessee(); |
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326 | tree.putSideNote(object, Path.OBJECT_PARAM_KEY, param); |
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327 | return object; |
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328 | } |
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329 | |
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330 | public static Object createAccessee(Tree tree, Access access) { |
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331 | Object object = access.createAccessee(); |
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332 | tree.putSideNote(object, Path.OBJECT_PARAM_KEY, access.buildParam(new ParamBuilder()).finish(CompositeParam.class)); |
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333 | return object; |
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334 | } |
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335 | |
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336 | public static boolean isMarked(Tree tree, Object object, SideNoteKey<Boolean> mark, boolean defValue) { |
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337 | assert tree.isActive(); |
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338 | Boolean v = tree.getSideNote(object, mark); |
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339 | return (v != null ? v : defValue); |
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340 | } |
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341 | |
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342 | public static void mark(Tree tree, Object object, SideNoteKey<Boolean> mark, boolean value) { |
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343 | assert tree.isActive(); |
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344 | tree.putSideNote(object, mark, value); |
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345 | } |
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346 | |
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347 | public static FramsClass getFramsClass(Path path) { |
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348 | return path.getTree().getRegistry().getFramsClass(path.getTop().getParam()); |
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349 | } |
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350 | |
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351 | // public static <T extends Param> T getParam(Path path, String id, Class<T> type) { |
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352 | // return getFramsClass(path).getParamEntry(id, type); |
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353 | // } |
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354 | |
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355 | public static <T> T getOrCreateSideNote(Tree tree, Object object, SideNoteKey<T> key) { |
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356 | T result = tree.getSideNote(object, key); |
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357 | if (result == null) { |
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358 | result = key.newValue(); |
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359 | tree.putSideNote(object, key, result); |
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360 | } |
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361 | return result; |
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362 | } |
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363 | |
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364 | public static <T> boolean hasSideNotes(Tree tree, Object object, SideNoteKey<T> key) { |
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365 | return tree.getSideNote(object, key) != null; |
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366 | } |
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367 | |
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368 | public static <T> boolean hasSideNote(Path path, SideNoteKey<T> key) { |
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369 | return path.getTree().getSideNote(path.getTopObject(), key) != null; |
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370 | } |
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371 | |
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372 | public static <T> T getSideNote(Path path, SideNoteKey<T> key) { |
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373 | assert path.isResolved(); |
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374 | return path.getTree().getSideNote(path.getTopObject(), key); |
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375 | } |
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376 | |
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377 | public static <T> void putSideNote(Path path, SideNoteKey<T> key, T value) { |
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378 | path.getTree().putSideNote(path.getTopObject(), key, value); |
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379 | } |
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380 | |
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381 | public static boolean removeSideNote(Path path, SideNoteKey<?> key) { |
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382 | assert path.isResolved(); |
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383 | return path.getTree().removeSideNote(path.getTopObject(), key); |
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384 | } |
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385 | |
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386 | } |
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