Mercurial Repositories > eric / file comparison
comparison: eric7/Utilities/ClassBrowsers/jsclbr.py
eric7/Utilities/ClassBrowsers/jsclbr.py
- branch
- eric7
- changeset 8312
- 800c432b34c8
- parent 8207
- d359172d11be
- child 8881
- 54e42bc2437a
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| 8311:4e8b98454baa | 8312:800c432b34c8 |
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| 1 # -*- coding: utf-8 -*- | |
| 2 | |
| 3 # Copyright (c) 2013 - 2021 Detlev Offenbach <detlev@die-offenbachs.de> | |
| 4 # | |
| 5 | |
| 6 """ | |
| 7 Parse a JavaScript file and retrieve variables and functions. | |
| 8 | |
| 9 It uses the JavaScript parser contained in the jasy web framework. | |
| 10 """ | |
| 11 | |
| 12 import jasy.script.parse.Parser as jsParser | |
| 13 import jasy.script.tokenize.Tokenizer as jsTokenizer | |
| 14 | |
| 15 import Utilities | |
| 16 import Utilities.ClassBrowsers as ClassBrowsers | |
| 17 from . import ClbrBaseClasses | |
| 18 | |
| 19 SUPPORTED_TYPES = [ClassBrowsers.JS_SOURCE] | |
| 20 | |
| 21 _modules = {} # cache of modules we've seen | |
| 22 | |
| 23 | |
| 24 class VisibilityMixin(ClbrBaseClasses.ClbrVisibilityMixinBase): | |
| 25 """ | |
| 26 Mixin class implementing the notion of visibility. | |
| 27 """ | |
| 28 def __init__(self): | |
| 29 """ | |
| 30 Constructor | |
| 31 """ | |
| 32 if self.name.startswith('__'): | |
| 33 self.setPrivate() | |
| 34 elif self.name.startswith('_'): | |
| 35 self.setProtected() | |
| 36 else: | |
| 37 self.setPublic() | |
| 38 | |
| 39 | |
| 40 class Function(ClbrBaseClasses.Function, VisibilityMixin): | |
| 41 """ | |
| 42 Class to represent a Python function. | |
| 43 """ | |
| 44 def __init__(self, module, name, file, lineno, signature='', | |
| 45 separator=','): | |
| 46 """ | |
| 47 Constructor | |
| 48 | |
| 49 @param module name of the module containing this function | |
| 50 @param name name of this function | |
| 51 @param file filename containing this class | |
| 52 @param lineno linenumber of the class definition | |
| 53 @param signature parameterlist of the method | |
| 54 @param separator string separating the parameters | |
| 55 """ | |
| 56 ClbrBaseClasses.Function.__init__(self, module, name, file, lineno, | |
| 57 signature, separator) | |
| 58 VisibilityMixin.__init__(self) | |
| 59 | |
| 60 | |
| 61 class Attribute(ClbrBaseClasses.Attribute, VisibilityMixin): | |
| 62 """ | |
| 63 Class to represent a class attribute. | |
| 64 """ | |
| 65 def __init__(self, module, name, file, lineno): | |
| 66 """ | |
| 67 Constructor | |
| 68 | |
| 69 @param module name of the module containing this class | |
| 70 @param name name of this class | |
| 71 @param file filename containing this attribute | |
| 72 @param lineno linenumber of the class definition | |
| 73 """ | |
| 74 ClbrBaseClasses.Attribute.__init__(self, module, name, file, lineno) | |
| 75 VisibilityMixin.__init__(self) | |
| 76 | |
| 77 | |
| 78 class Visitor: | |
| 79 """ | |
| 80 Class implementing a visitor going through the parsed tree. | |
| 81 """ | |
| 82 def __init__(self, src, module, filename): | |
| 83 """ | |
| 84 Constructor | |
| 85 | |
| 86 @param src source to be parsed (string) | |
| 87 @param module name of the module (string) | |
| 88 @param filename file name (string) | |
| 89 """ | |
| 90 self.__dict = {} | |
| 91 self.__dict_counts = {} | |
| 92 self.__root = None | |
| 93 self.__stack = [] | |
| 94 | |
| 95 self.__module = module | |
| 96 self.__file = filename | |
| 97 self.__source = src | |
| 98 | |
| 99 # normalize line endings | |
| 100 self.__source = self.__source.replace("\r\n", "\n").replace("\r", "\n") | |
| 101 | |
| 102 # ensure source ends with an eol | |
| 103 if bool(self.__source) and self.__source[-1] != '\n': | |
| 104 self.__source = self.__source + '\n' | |
| 105 | |
| 106 def parse(self): | |
| 107 """ | |
| 108 Public method to parse the source. | |
| 109 | |
| 110 @return dictionary containing the parsed information | |
| 111 """ | |
| 112 try: | |
| 113 self.__root = jsParser.parse(self.__source, self.__file) | |
| 114 self.__visit(self.__root) | |
| 115 except jsParser.SyntaxError: | |
| 116 # ignore syntax errors of the parser | |
| 117 pass | |
| 118 except jsTokenizer.ParseError: | |
| 119 # ignore syntax errors of the tokenizer | |
| 120 pass | |
| 121 | |
| 122 return self.__dict | |
| 123 | |
| 124 def __visit(self, root): | |
| 125 """ | |
| 126 Private method implementing the visit logic delegating to interesting | |
| 127 methods. | |
| 128 | |
| 129 @param root root node to visit | |
| 130 """ | |
| 131 def call(n): | |
| 132 getattr(self, "visit_{0}".format(n.type), | |
| 133 self.visit_noop)(n) | |
| 134 | |
| 135 call(root) | |
| 136 for node in root: | |
| 137 self.__visit(node) | |
| 138 | |
| 139 def visit_noop(self, node): | |
| 140 """ | |
| 141 Public method to ignore the given node. | |
| 142 | |
| 143 @param node reference to the node (jasy.script.parse.Node.Node) | |
| 144 """ | |
| 145 pass | |
| 146 | |
| 147 def visit_function(self, node): | |
| 148 """ | |
| 149 Public method to treat a function node. | |
| 150 | |
| 151 @param node reference to the node (jasy.script.parse.Node.Node) | |
| 152 """ | |
| 153 if ( | |
| 154 node.type == "function" and | |
| 155 getattr(node, "name", None) and | |
| 156 node.functionForm == "declared_form" | |
| 157 ): | |
| 158 if self.__stack and self.__stack[-1].endlineno < node.line: | |
| 159 del self.__stack[-1] | |
| 160 endline = node.line + self.__source.count( | |
| 161 '\n', node.start, node.end) | |
| 162 if getattr(node, "params", None): | |
| 163 func_sig = ", ".join([p.value for p in node.params]) | |
| 164 else: | |
| 165 func_sig = "" | |
| 166 if self.__stack: | |
| 167 # it's a nested function | |
| 168 cur_func = self.__stack[-1] | |
| 169 f = Function(None, node.name, | |
| 170 self.__file, node.line, func_sig) | |
| 171 f.setEndLine(endline) | |
| 172 cur_func._addmethod(node.name, f) | |
| 173 else: | |
| 174 f = Function(self.__module, node.name, | |
| 175 self.__file, node.line, func_sig) | |
| 176 f.setEndLine(endline) | |
| 177 func_name = node.name | |
| 178 if func_name in self.__dict_counts: | |
| 179 self.__dict_counts[func_name] += 1 | |
| 180 func_name = "{0}_{1:d}".format( | |
| 181 func_name, self.__dict_counts[func_name]) | |
| 182 else: | |
| 183 self.__dict_counts[func_name] = 0 | |
| 184 self.__dict[func_name] = f | |
| 185 self.__stack.append(f) | |
| 186 | |
| 187 def visit_property_init(self, node): | |
| 188 """ | |
| 189 Public method to treat a property_init node. | |
| 190 | |
| 191 @param node reference to the node (jasy.script.parse.Node.Node) | |
| 192 """ | |
| 193 if node.type == "property_init" and node[1].type == "function": | |
| 194 if self.__stack and self.__stack[-1].endlineno < node[0].line: | |
| 195 del self.__stack[-1] | |
| 196 endline = node[0].line + self.__source.count( | |
| 197 '\n', node.start, node[1].end) | |
| 198 if getattr(node[1], "params", None): | |
| 199 func_sig = ", ".join([p.value for p in node[1].params]) | |
| 200 else: | |
| 201 func_sig = "" | |
| 202 if self.__stack: | |
| 203 # it's a nested function | |
| 204 cur_func = self.__stack[-1] | |
| 205 f = Function(None, node[0].value, | |
| 206 self.__file, node[0].line, func_sig) | |
| 207 f.setEndLine(endline) | |
| 208 cur_func._addmethod(node[0].value, f) | |
| 209 else: | |
| 210 f = Function(self.__module, node[0].value, | |
| 211 self.__file, node[0].line, func_sig) | |
| 212 f.setEndLine(endline) | |
| 213 func_name = node[0].value | |
| 214 if func_name in self.__dict_counts: | |
| 215 self.__dict_counts[func_name] += 1 | |
| 216 func_name = "{0}_{1:d}".format( | |
| 217 func_name, self.__dict_counts[func_name]) | |
| 218 else: | |
| 219 self.__dict_counts[func_name] = 0 | |
| 220 self.__dict[func_name] = f | |
| 221 self.__stack.append(f) | |
| 222 | |
| 223 def visit_var(self, node): | |
| 224 """ | |
| 225 Public method to treat a variable node. | |
| 226 | |
| 227 @param node reference to the node (jasy.script.parse.Node.Node) | |
| 228 """ | |
| 229 if ( | |
| 230 node.type == "var" and | |
| 231 node.parent.type == "script" and | |
| 232 node.getChildrenLength() | |
| 233 ): | |
| 234 if self.__stack and self.__stack[-1].endlineno < node[0].line: | |
| 235 del self.__stack[-1] | |
| 236 if self.__stack: | |
| 237 # function variables | |
| 238 for var in node: | |
| 239 attr = Attribute( | |
| 240 self.__module, var.name, self.__file, var.line) | |
| 241 self.__stack[-1]._addattribute(attr) | |
| 242 else: | |
| 243 # global variable | |
| 244 if "@@Globals@@" not in self.__dict: | |
| 245 self.__dict["@@Globals@@"] = ClbrBaseClasses.ClbrBase( | |
| 246 self.__module, "Globals", self.__file, 0) | |
| 247 for var in node: | |
| 248 self.__dict["@@Globals@@"]._addglobal(Attribute( | |
| 249 self.__module, var.name, self.__file, var.line)) | |
| 250 | |
| 251 def visit_const(self, node): | |
| 252 """ | |
| 253 Public method to treat a constant node. | |
| 254 | |
| 255 @param node reference to the node (jasy.script.parse.Node.Node) | |
| 256 """ | |
| 257 if ( | |
| 258 node.type == "const" and | |
| 259 node.parent.type == "script" and | |
| 260 node.getChildrenLength() | |
| 261 ): | |
| 262 if self.__stack and self.__stack[-1].endlineno < node[0].line: | |
| 263 del self.__stack[-1] | |
| 264 if self.__stack: | |
| 265 # function variables | |
| 266 for var in node: | |
| 267 attr = Attribute(self.__module, "const " + var.name, | |
| 268 self.__file, var.line) | |
| 269 self.__stack[-1]._addattribute(attr) | |
| 270 else: | |
| 271 # global variable | |
| 272 if "@@Globals@@" not in self.__dict: | |
| 273 self.__dict["@@Globals@@"] = ClbrBaseClasses.ClbrBase( | |
| 274 self.__module, "Globals", self.__file, 0) | |
| 275 for var in node: | |
| 276 self.__dict["@@Globals@@"]._addglobal( | |
| 277 Attribute(self.__module, "const " + var.name, | |
| 278 self.__file, var.line)) | |
| 279 | |
| 280 | |
| 281 def readmodule_ex(module, path=None): | |
| 282 """ | |
| 283 Read a JavaScript file and return a dictionary of functions and variables. | |
| 284 | |
| 285 @param module name of the JavaScript file (string) | |
| 286 @param path path the file should be searched in (list of strings) | |
| 287 @return the resulting dictionary | |
| 288 """ | |
| 289 global _modules | |
| 290 | |
| 291 if module in _modules: | |
| 292 # we've seen this file before... | |
| 293 return _modules[module] | |
| 294 | |
| 295 # search the path for the file | |
| 296 f = None | |
| 297 fullpath = [] if path is None else path[:] | |
| 298 f, file, (suff, mode, type) = ClassBrowsers.find_module(module, fullpath) | |
| 299 if f: | |
| 300 f.close() | |
| 301 if type not in SUPPORTED_TYPES: | |
| 302 # not CORBA IDL source, can't do anything with this module | |
| 303 _modules[module] = {} | |
| 304 return {} | |
| 305 | |
| 306 try: | |
| 307 src = Utilities.readEncodedFile(file)[0] | |
| 308 except (UnicodeError, OSError): | |
| 309 # can't do anything with this module | |
| 310 _modules[module] = {} | |
| 311 return {} | |
| 312 | |
| 313 _modules[module] = scan(src, file, module) | |
| 314 return _modules[module] | |
| 315 | |
| 316 | |
| 317 def scan(src, file, module): | |
| 318 """ | |
| 319 Public method to scan the given source text. | |
| 320 | |
| 321 @param src source text to be scanned | |
| 322 @type str | |
| 323 @param file file name associated with the source text | |
| 324 @type str | |
| 325 @param module module name associated with the source text | |
| 326 @type str | |
| 327 @return dictionary containing the extracted data | |
| 328 @rtype dict | |
| 329 """ | |
| 330 # convert eol markers the Python style | |
| 331 src = src.replace("\r\n", "\n").replace("\r", "\n") | |
| 332 | |
| 333 dictionary = {} | |
| 334 | |
| 335 visitor = Visitor(src, module, file) | |
| 336 dictionary = visitor.parse() | |
| 337 _modules[module] = dictionary | |
| 338 return dictionary |
