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comparison: src/eric7/ThirdParty/Jasy/jasy/parse/AbstractNode.py
src/eric7/ThirdParty/Jasy/jasy/parse/AbstractNode.py
- branch
- eric7
- changeset 9955
- aa02420279fe
- parent 9954
- 7c5fa3eef082
- child 9956
- 5b138f996a1e
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| 9954:7c5fa3eef082 | 9955:aa02420279fe |
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| 1 # | |
| 2 # Jasy - Web Tooling Framework | |
| 3 # Copyright 2013-2014 Sebastian Werner | |
| 4 # | |
| 5 | |
| 6 import json, copy | |
| 7 | |
| 8 class AbstractNode(list): | |
| 9 | |
| 10 __slots__ = [ | |
| 11 # core data | |
| 12 "line", "type", "tokenizer", "start", "end", "rel", "parent", | |
| 13 | |
| 14 # dynamic added data by other modules | |
| 15 "comments", "scope", "values", | |
| 16 | |
| 17 # node type specific | |
| 18 "value", "parenthesized", "fileId", "params", | |
| 19 "name", "initializer", "condition", "assignOp", | |
| 20 "thenPart", "elsePart", "statements", | |
| 21 "statement", "variables", "names", "postfix" | |
| 22 ] | |
| 23 | |
| 24 | |
| 25 def __init__(self, tokenizer=None, type=None, args=[]): | |
| 26 list.__init__(self) | |
| 27 | |
| 28 self.start = 0 | |
| 29 self.end = 0 | |
| 30 self.line = None | |
| 31 | |
| 32 if tokenizer: | |
| 33 token = getattr(tokenizer, "token", None) | |
| 34 if token: | |
| 35 # We may define a custom type but use the same positioning as another token | |
| 36 # e.g. transform curlys in block nodes, etc. | |
| 37 self.type = type if type else getattr(token, "type", None) | |
| 38 self.line = token.line | |
| 39 | |
| 40 # Start & end are file positions for error handling. | |
| 41 self.start = token.start | |
| 42 self.end = token.end | |
| 43 | |
| 44 else: | |
| 45 self.type = type | |
| 46 self.line = tokenizer.line | |
| 47 self.start = None | |
| 48 self.end = None | |
| 49 | |
| 50 self.tokenizer = tokenizer | |
| 51 | |
| 52 elif type: | |
| 53 self.type = type | |
| 54 | |
| 55 for arg in args: | |
| 56 self.append(arg) | |
| 57 | |
| 58 | |
| 59 def getFileName(self): | |
| 60 """ | |
| 61 Traverses up the tree to find a node with a fileId and returns it | |
| 62 """ | |
| 63 | |
| 64 node = self | |
| 65 while node: | |
| 66 fileId = getattr(node, "fileId", None) | |
| 67 if fileId is not None: | |
| 68 return fileId | |
| 69 | |
| 70 node = getattr(node, "parent", None) | |
| 71 | |
| 72 | |
| 73 def getUnrelatedChildren(self): | |
| 74 """Collects all unrelated children""" | |
| 75 | |
| 76 collection = [] | |
| 77 for child in self: | |
| 78 if not hasattr(child, "rel"): | |
| 79 collection.append(child) | |
| 80 | |
| 81 return collection | |
| 82 | |
| 83 | |
| 84 def getChildrenLength(self, filter=True): | |
| 85 """Number of (per default unrelated) children""" | |
| 86 | |
| 87 count = 0 | |
| 88 for child in self: | |
| 89 if not filter or not hasattr(child, "rel"): | |
| 90 count += 1 | |
| 91 return count | |
| 92 | |
| 93 | |
| 94 def remove(self, kid): | |
| 95 """Removes the given kid""" | |
| 96 | |
| 97 if not kid in self: | |
| 98 raise Exception("Given node is no child!") | |
| 99 | |
| 100 if hasattr(kid, "rel"): | |
| 101 delattr(self, kid.rel) | |
| 102 del kid.rel | |
| 103 del kid.parent | |
| 104 | |
| 105 list.remove(self, kid) | |
| 106 | |
| 107 | |
| 108 def insert(self, index, kid): | |
| 109 """Inserts the given kid at the given index""" | |
| 110 | |
| 111 if index is None: | |
| 112 return self.append(kid) | |
| 113 | |
| 114 if hasattr(kid, "parent"): | |
| 115 kid.parent.remove(kid) | |
| 116 | |
| 117 kid.parent = self | |
| 118 | |
| 119 return list.insert(self, index, kid) | |
| 120 | |
| 121 | |
| 122 def insertAll(self, index, kids): | |
| 123 """Inserts all kids starting with the given index""" | |
| 124 | |
| 125 if index is None: | |
| 126 for kid in list(kids): | |
| 127 self.append(kid) | |
| 128 else: | |
| 129 for pos, kid in enumerate(list(kids)): | |
| 130 self.insert(index+pos, kid) | |
| 131 | |
| 132 | |
| 133 def insertAllReplace(self, orig, kids): | |
| 134 """Inserts all kids at the same position as the original node (which is removed afterwards)""" | |
| 135 | |
| 136 index = self.index(orig) | |
| 137 for pos, kid in enumerate(list(kids)): | |
| 138 self.insert(index+pos, kid) | |
| 139 | |
| 140 self.remove(orig) | |
| 141 | |
| 142 | |
| 143 def append(self, kid, rel=None): | |
| 144 """Appends the given kid with an optional relation hint""" | |
| 145 | |
| 146 # kid can be null e.g. [1, , 2]. | |
| 147 if kid: | |
| 148 if hasattr(kid, "parent"): | |
| 149 kid.parent.remove(kid) | |
| 150 | |
| 151 # Debug | |
| 152 if not isinstance(kid, AbstractNode): | |
| 153 raise Exception("Invalid kid: %s" % kid) | |
| 154 | |
| 155 if hasattr(kid, "tokenizer"): | |
| 156 if hasattr(kid, "start"): | |
| 157 if not hasattr(self, "start") or self.start == None or kid.start < self.start: | |
| 158 self.start = kid.start | |
| 159 | |
| 160 if hasattr(kid, "end"): | |
| 161 if not hasattr(self, "end") or self.end == None or self.end < kid.end: | |
| 162 self.end = kid.end | |
| 163 | |
| 164 kid.parent = self | |
| 165 | |
| 166 # alias for function | |
| 167 if rel != None: | |
| 168 setattr(self, rel, kid) | |
| 169 setattr(kid, "rel", rel) | |
| 170 | |
| 171 # Block None kids when they should be related | |
| 172 if not kid and rel: | |
| 173 return | |
| 174 | |
| 175 return list.append(self, kid) | |
| 176 | |
| 177 | |
| 178 def replace(self, kid, repl): | |
| 179 """Replaces the given kid with a replacement kid""" | |
| 180 | |
| 181 if repl in self: | |
| 182 self.remove(repl) | |
| 183 | |
| 184 self[self.index(kid)] = repl | |
| 185 | |
| 186 if hasattr(kid, "rel"): | |
| 187 repl.rel = kid.rel | |
| 188 setattr(self, kid.rel, repl) | |
| 189 | |
| 190 # cleanup old kid | |
| 191 delattr(kid, "rel") | |
| 192 | |
| 193 elif hasattr(repl, "rel"): | |
| 194 # delete old relation on new child | |
| 195 delattr(repl, "rel") | |
| 196 | |
| 197 delattr(kid, "parent") | |
| 198 repl.parent = self | |
| 199 | |
| 200 return kid | |
| 201 | |
| 202 | |
| 203 def toXml(self, format=True, indent=0, tab=" "): | |
| 204 """Converts the node to XML""" | |
| 205 | |
| 206 lead = tab * indent if format else "" | |
| 207 innerLead = tab * (indent+1) if format else "" | |
| 208 lineBreak = "\n" if format else "" | |
| 209 | |
| 210 relatedChildren = [] | |
| 211 attrsCollection = [] | |
| 212 | |
| 213 for name in self.__slots__: | |
| 214 # "type" is used as node name - no need to repeat it as an attribute | |
| 215 # "parent" is a relation to the parent node - for serialization we ignore these at the moment | |
| 216 # "rel" is used internally to keep the relation to the parent - used by nodes which need to keep track of specific children | |
| 217 # "start" and "end" are for debugging only | |
| 218 if hasattr(self, name) and name not in ("type", "parent", "comments", "selector", "rel", "start", "end") and name[0] != "_": | |
| 219 value = getattr(self, name) | |
| 220 if isinstance(value, AbstractNode): | |
| 221 if hasattr(value, "rel"): | |
| 222 relatedChildren.append(value) | |
| 223 | |
| 224 elif type(value) in (bool, int, float, str, list, set, dict): | |
| 225 if type(value) == bool: | |
| 226 value = "true" if value else "false" | |
| 227 elif type(value) in (int, float): | |
| 228 value = str(value) | |
| 229 elif type(value) in (list, set, dict): | |
| 230 if type(value) == dict: | |
| 231 value = value.keys() | |
| 232 if len(value) == 0: | |
| 233 continue | |
| 234 try: | |
| 235 value = ",".join(value) | |
| 236 except TypeError as ex: | |
| 237 raise Exception("Invalid attribute list child at: %s: %s" % (name, ex)) | |
| 238 | |
| 239 attrsCollection.append('%s=%s' % (name, json.dumps(value))) | |
| 240 | |
| 241 attrs = (" " + " ".join(attrsCollection)) if len(attrsCollection) > 0 else "" | |
| 242 | |
| 243 comments = getattr(self, "comments", None) | |
| 244 scope = getattr(self, "scope", None) | |
| 245 selector = getattr(self, "selector", None) | |
| 246 | |
| 247 if len(self) == 0 and len(relatedChildren) == 0 and (not comments or len(comments) == 0) and not scope and not selector: | |
| 248 result = "%s<%s%s/>%s" % (lead, self.type, attrs, lineBreak) | |
| 249 | |
| 250 else: | |
| 251 result = "%s<%s%s>%s" % (lead, self.type, attrs, lineBreak) | |
| 252 | |
| 253 if comments: | |
| 254 for comment in comments: | |
| 255 result += '%s<comment context="%s" variant="%s">%s</comment>%s' % (innerLead, comment.context, comment.variant, comment.text, lineBreak) | |
| 256 | |
| 257 if scope: | |
| 258 for statKey in scope: | |
| 259 statValue = scope[statKey] | |
| 260 if statValue != None and len(statValue) > 0: | |
| 261 if type(statValue) is set: | |
| 262 statValue = ",".join(statValue) | |
| 263 elif type(statValue) is dict: | |
| 264 statValue = ",".join(statValue.keys()) | |
| 265 | |
| 266 result += '%s<stat name="%s">%s</stat>%s' % (innerLead, statKey, statValue, lineBreak) | |
| 267 | |
| 268 if selector: | |
| 269 for entry in selector: | |
| 270 result += '%s<selector>%s</selector>%s' % (innerLead, entry, lineBreak) | |
| 271 | |
| 272 for child in self: | |
| 273 if not child: | |
| 274 result += "%s<none/>%s" % (innerLead, lineBreak) | |
| 275 elif not hasattr(child, "rel"): | |
| 276 result += child.toXml(format, indent+1) | |
| 277 elif not child in relatedChildren: | |
| 278 raise Exception("Oops, irritated by non related: %s in %s - child says it is related as %s" % (child.type, self.type, child.rel)) | |
| 279 | |
| 280 for child in relatedChildren: | |
| 281 result += "%s<%s>%s" % (innerLead, child.rel, lineBreak) | |
| 282 result += child.toXml(format, indent+2) | |
| 283 result += "%s</%s>%s" % (innerLead, child.rel, lineBreak) | |
| 284 | |
| 285 result += "%s</%s>%s" % (lead, self.type, lineBreak) | |
| 286 | |
| 287 return result | |
| 288 | |
| 289 | |
| 290 def __deepcopy__(self, memo): | |
| 291 """Used by deepcopy function to clone AbstractNode instances""" | |
| 292 | |
| 293 CurrentClass = self.__class__ | |
| 294 | |
| 295 # Create copy | |
| 296 if hasattr(self, "tokenizer"): | |
| 297 result = CurrentClass(tokenizer=self.tokenizer) | |
| 298 else: | |
| 299 result = CurrentClass(type=self.type) | |
| 300 | |
| 301 # Copy children | |
| 302 for child in self: | |
| 303 if child is None: | |
| 304 list.append(result, None) | |
| 305 else: | |
| 306 # Using simple list appends for better performance | |
| 307 childCopy = copy.deepcopy(child, memo) | |
| 308 childCopy.parent = result | |
| 309 list.append(result, childCopy) | |
| 310 | |
| 311 # Sync attributes | |
| 312 # Note: "parent" attribute is handled by append() already | |
| 313 for name in self.__slots__: | |
| 314 if hasattr(self, name) and not name in ("parent", "tokenizer"): | |
| 315 value = getattr(self, name) | |
| 316 if value is None: | |
| 317 pass | |
| 318 elif type(value) in (bool, int, float, str): | |
| 319 setattr(result, name, value) | |
| 320 elif type(value) in (list, set, dict, CurrentClass): | |
| 321 setattr(result, name, copy.deepcopy(value, memo)) | |
| 322 # Scope can be assigned (will be re-created when needed for the copied node) | |
| 323 elif name == "scope": | |
| 324 result.scope = self.scope | |
| 325 | |
| 326 return result | |
| 327 | |
| 328 | |
| 329 def getSource(self): | |
| 330 """Returns the source code of the node""" | |
| 331 | |
| 332 if not self.tokenizer: | |
| 333 raise Exception("Could not find source for node '%s'" % self.type) | |
| 334 | |
| 335 if getattr(self, "start", None) is not None: | |
| 336 if getattr(self, "end", None) is not None: | |
| 337 return self.tokenizer.source[self.start:self.end] | |
| 338 return self.tokenizer.source[self.start:] | |
| 339 | |
| 340 if getattr(self, "end", None) is not None: | |
| 341 return self.tokenizer.source[:self.end] | |
| 342 | |
| 343 return self.tokenizer.source[:] | |
| 344 | |
| 345 | |
| 346 # Map Python built-ins | |
| 347 __repr__ = toXml | |
| 348 __str__ = toXml | |
| 349 | |
| 350 | |
| 351 def __eq__(self, other): | |
| 352 return self is other | |
| 353 | |
| 354 def __bool__(self): | |
| 355 return True |
