Mercurial Repositories > eric / file comparison
comparison: ThirdParty/Jasy/jasy/js/parse/Node.py
ThirdParty/Jasy/jasy/js/parse/Node.py
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- Py2 comp.
- changeset 2847
- 1843ef6e2656
- parent 2779
- 4d433896b6d6
- child 3145
- a9de05d4a22f
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| 2846:b852fe4d153a | 2847:1843ef6e2656 |
|---|---|
| 1 # | |
| 2 # Jasy - Web Tooling Framework | |
| 3 # Copyright 2010-2012 Zynga Inc. | |
| 4 # | |
| 5 | |
| 6 # | |
| 7 # License: MPL 1.1/GPL 2.0/LGPL 2.1 | |
| 8 # Authors: | |
| 9 # - Brendan Eich <brendan@mozilla.org> (Original JavaScript) (2004) | |
| 10 # - Sebastian Werner <info@sebastian-werner.net> (Refactoring Python) (2010) | |
| 11 # | |
| 12 | |
| 13 from __future__ import unicode_literals # __IGNORE_WARNING__ | |
| 14 | |
| 15 import copy | |
| 16 | |
| 17 class Node(list): | |
| 18 | |
| 19 __slots__ = [ | |
| 20 # core data | |
| 21 "line", "type", "tokenizer", "start", "end", "rel", "parent", | |
| 22 | |
| 23 # dynamic added data by other modules | |
| 24 "comments", "scope", | |
| 25 | |
| 26 # node type specific | |
| 27 "value", "expression", "body", "functionForm", "parenthesized", "fileId", | |
| 28 "params", "name", "readOnly", "initializer", "condition", "isLoop", "isEach", | |
| 29 "object", "assignOp", "iterator", "thenPart", "exception", "elsePart", "setup", | |
| 30 "postfix", "update", "tryBlock", "block", "defaultIndex", "discriminant", "label", | |
| 31 "statements", "finallyBlock", "statement", "variables", "names", "guard", "for", | |
| 32 "tail", "expressionClosure" | |
| 33 ] | |
| 34 | |
| 35 def __init__(self, tokenizer=None, type=None, args=[]): | |
| 36 list.__init__(self) | |
| 37 | |
| 38 self.start = 0 | |
| 39 self.end = 0 | |
| 40 self.line = None | |
| 41 | |
| 42 if tokenizer: | |
| 43 token = getattr(tokenizer, "token", None) | |
| 44 if token: | |
| 45 # We may define a custom type but use the same positioning as another | |
| 46 # token, e.g. transform curlys in block nodes, etc. | |
| 47 self.type = type if type else getattr(token, "type", None) | |
| 48 self.line = token.line | |
| 49 | |
| 50 # Start & end are file positions for error handling. | |
| 51 self.start = token.start | |
| 52 self.end = token.end | |
| 53 | |
| 54 else: | |
| 55 self.type = type | |
| 56 self.line = tokenizer.line | |
| 57 self.start = None | |
| 58 self.end = None | |
| 59 | |
| 60 self.tokenizer = tokenizer | |
| 61 | |
| 62 elif type: | |
| 63 self.type = type | |
| 64 | |
| 65 for arg in args: | |
| 66 self.append(arg) | |
| 67 | |
| 68 def getUnrelatedChildren(self): | |
| 69 """Collects all unrelated children""" | |
| 70 | |
| 71 collection = [] | |
| 72 for child in self: | |
| 73 if not hasattr(child, "rel"): | |
| 74 collection.append(child) | |
| 75 | |
| 76 return collection | |
| 77 | |
| 78 def getChildrenLength(self, filter=True): | |
| 79 """Number of (per default unrelated) children""" | |
| 80 | |
| 81 count = 0 | |
| 82 for child in self: | |
| 83 if not filter or not hasattr(child, "rel"): | |
| 84 count += 1 | |
| 85 return count | |
| 86 | |
| 87 def remove(self, kid): | |
| 88 """Removes the given kid""" | |
| 89 | |
| 90 if not kid in self: | |
| 91 raise Exception("Given node is no child!") | |
| 92 | |
| 93 if hasattr(kid, "rel"): | |
| 94 delattr(self, kid.rel) | |
| 95 del kid.rel | |
| 96 del kid.parent | |
| 97 | |
| 98 list.remove(self, kid) | |
| 99 | |
| 100 def insert(self, index, kid): | |
| 101 """Inserts the given kid at the given index""" | |
| 102 | |
| 103 if index is None: | |
| 104 return self.append(kid) | |
| 105 | |
| 106 if hasattr(kid, "parent"): | |
| 107 kid.parent.remove(kid) | |
| 108 | |
| 109 kid.parent = self | |
| 110 | |
| 111 return list.insert(self, index, kid) | |
| 112 | |
| 113 def append(self, kid, rel=None): | |
| 114 """Appends the given kid with an optional relation hint""" | |
| 115 | |
| 116 # kid can be null e.g. [1, , 2]. | |
| 117 if kid: | |
| 118 if hasattr(kid, "parent"): | |
| 119 kid.parent.remove(kid) | |
| 120 | |
| 121 # Debug | |
| 122 if not isinstance(kid, Node): | |
| 123 raise Exception("Invalid kid: %s" % kid) | |
| 124 | |
| 125 if hasattr(kid, "tokenizer"): | |
| 126 if hasattr(kid, "start"): | |
| 127 if not hasattr(self, "start") or \ | |
| 128 self.start == None or \ | |
| 129 kid.start < self.start: | |
| 130 self.start = kid.start | |
| 131 | |
| 132 if hasattr(kid, "end"): | |
| 133 if not hasattr(self, "end") or \ | |
| 134 self.end == None or \ | |
| 135 self.end < kid.end: | |
| 136 self.end = kid.end | |
| 137 | |
| 138 kid.parent = self | |
| 139 | |
| 140 # alias for function | |
| 141 if rel != None: | |
| 142 setattr(self, rel, kid) | |
| 143 setattr(kid, "rel", rel) | |
| 144 | |
| 145 # Block None kids when they should be related | |
| 146 if not kid and rel: | |
| 147 return | |
| 148 | |
| 149 return list.append(self, kid) | |
| 150 | |
| 151 def replace(self, kid, repl): | |
| 152 """Replaces the given kid with a replacement kid""" | |
| 153 | |
| 154 if repl in self: | |
| 155 self.remove(repl) | |
| 156 | |
| 157 self[self.index(kid)] = repl | |
| 158 | |
| 159 if hasattr(kid, "rel"): | |
| 160 repl.rel = kid.rel | |
| 161 setattr(self, kid.rel, repl) | |
| 162 | |
| 163 # cleanup old kid | |
| 164 delattr(kid, "rel") | |
| 165 | |
| 166 elif hasattr(repl, "rel"): | |
| 167 # delete old relation on new child | |
| 168 delattr(repl, "rel") | |
| 169 | |
| 170 delattr(kid, "parent") | |
| 171 repl.parent = self | |
| 172 | |
| 173 return kid | |
| 174 | |
| 175 def __deepcopy__(self, memo): | |
| 176 """Used by deepcopy function to clone Node instances""" | |
| 177 | |
| 178 # Create copy | |
| 179 if hasattr(self, "tokenizer"): | |
| 180 result = Node(tokenizer=self.tokenizer) | |
| 181 else: | |
| 182 result = Node(type=self.type) | |
| 183 | |
| 184 # Copy children | |
| 185 for child in self: | |
| 186 if child is None: | |
| 187 list.append(result, None) | |
| 188 else: | |
| 189 # Using simple list appends for better performance | |
| 190 childCopy = copy.deepcopy(child, memo) | |
| 191 childCopy.parent = result | |
| 192 list.append(result, childCopy) | |
| 193 | |
| 194 # Sync attributes | |
| 195 # Note: "parent" attribute is handled by append() already | |
| 196 for name in self.__slots__: | |
| 197 if hasattr(self, name) and not name in ("parent", "tokenizer"): | |
| 198 value = getattr(self, name) | |
| 199 if value is None: | |
| 200 pass | |
| 201 elif type(value) in (bool, int, float, str): | |
| 202 setattr(result, name, value) | |
| 203 elif type(value) in (list, set, dict, Node): | |
| 204 setattr(result, name, copy.deepcopy(value, memo)) | |
| 205 # Scope can be assigned (will be re-created when needed for the | |
| 206 # copied node) | |
| 207 elif name == "scope": | |
| 208 result.scope = self.scope | |
| 209 | |
| 210 return result | |
| 211 | |
| 212 def __eq__(self, other): | |
| 213 return self is other | |
| 214 | |
| 215 def __bool__(self): | |
| 216 return True |
