Jeremy Hylton | 53187f3 | 2000-02-08 19:01:29 +0000 | [diff] [blame] | 1 | import os |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 2 | import marshal |
Jeremy Hylton | 53187f3 | 2000-02-08 19:01:29 +0000 | [diff] [blame] | 3 | import stat |
| 4 | import struct |
Jeremy Hylton | ad9a86f | 2000-02-16 00:55:44 +0000 | [diff] [blame] | 5 | import types |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 6 | from cStringIO import StringIO |
| 7 | |
| 8 | from compiler import ast, parse, walk |
| 9 | from compiler import pyassem, misc |
| 10 | from compiler.pyassem import CO_VARARGS, CO_VARKEYWORDS, TupleArg |
| 11 | |
| 12 | def compile(filename): |
| 13 | f = open(filename) |
| 14 | buf = f.read() |
| 15 | f.close() |
| 16 | mod = Module(buf, filename) |
| 17 | mod.compile() |
| 18 | f = open(filename + "c", "wb") |
| 19 | mod.dump(f) |
| 20 | f.close() |
| 21 | |
| 22 | class Module: |
| 23 | def __init__(self, source, filename): |
| 24 | self.filename = filename |
| 25 | self.source = source |
| 26 | self.code = None |
| 27 | |
| 28 | def compile(self): |
| 29 | ast = parse(self.source) |
| 30 | root, filename = os.path.split(self.filename) |
| 31 | gen = ModuleCodeGenerator(filename) |
| 32 | walk(ast, gen, 1) |
| 33 | self.code = gen.getCode() |
| 34 | |
| 35 | def dump(self, f): |
| 36 | f.write(self.getPycHeader()) |
| 37 | marshal.dump(self.code, f) |
| 38 | |
| 39 | MAGIC = (20121 | (ord('\r')<<16) | (ord('\n')<<24)) |
| 40 | |
| 41 | def getPycHeader(self): |
| 42 | # compile.c uses marshal to write a long directly, with |
| 43 | # calling the interface that would also generate a 1-byte code |
| 44 | # to indicate the type of the value. simplest way to get the |
| 45 | # same effect is to call marshal and then skip the code. |
| 46 | magic = marshal.dumps(self.MAGIC)[1:] |
| 47 | mtime = os.stat(self.filename)[stat.ST_MTIME] |
| 48 | mtime = struct.pack('i', mtime) |
| 49 | return magic + mtime |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 50 | |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 51 | class CodeGenerator: |
Jeremy Hylton | 3e0910c | 2000-02-10 17:20:39 +0000 | [diff] [blame] | 52 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 53 | optimized = 0 # is namespace access optimized? |
Jeremy Hylton | 3050d51 | 2000-02-12 00:12:38 +0000 | [diff] [blame] | 54 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 55 | def __init__(self, filename): |
| 56 | ## Subclasses must define a constructor that intializes self.graph |
| 57 | ## before calling this init function |
| 58 | ## self.graph = pyassem.PyFlowGraph() |
| 59 | self.filename = filename |
| 60 | self.locals = misc.Stack() |
| 61 | self.loops = misc.Stack() |
| 62 | self.curStack = 0 |
| 63 | self.maxStack = 0 |
| 64 | self._setupGraphDelegation() |
Jeremy Hylton | 53187f3 | 2000-02-08 19:01:29 +0000 | [diff] [blame] | 65 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 66 | def _setupGraphDelegation(self): |
| 67 | self.emit = self.graph.emit |
| 68 | self.newBlock = self.graph.newBlock |
| 69 | self.startBlock = self.graph.startBlock |
| 70 | self.nextBlock = self.graph.nextBlock |
| 71 | self.setDocstring = self.graph.setDocstring |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 72 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 73 | def getCode(self): |
| 74 | """Return a code object""" |
| 75 | return self.graph.getCode() |
Jeremy Hylton | 76d01b8 | 2000-02-11 20:27:07 +0000 | [diff] [blame] | 76 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 77 | # Next five methods handle name access |
Jeremy Hylton | 53187f3 | 2000-02-08 19:01:29 +0000 | [diff] [blame] | 78 | |
Jeremy Hylton | 4024560 | 2000-02-08 21:15:48 +0000 | [diff] [blame] | 79 | def isLocalName(self, name): |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 80 | return self.locals.top().has_elt(name) |
Jeremy Hylton | 4024560 | 2000-02-08 21:15:48 +0000 | [diff] [blame] | 81 | |
Jeremy Hylton | 3e0910c | 2000-02-10 17:20:39 +0000 | [diff] [blame] | 82 | def storeName(self, name): |
| 83 | self._nameOp('STORE', name) |
| 84 | |
| 85 | def loadName(self, name): |
| 86 | self._nameOp('LOAD', name) |
| 87 | |
| 88 | def delName(self, name): |
| 89 | self._nameOp('DELETE', name) |
| 90 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 91 | def _nameOp(self, prefix, name): |
| 92 | if not self.optimized: |
| 93 | self.emit(prefix + '_NAME', name) |
| 94 | return |
| 95 | if self.isLocalName(name): |
| 96 | self.emit(prefix + '_FAST', name) |
| 97 | else: |
| 98 | self.emit(prefix + '_GLOBAL', name) |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 99 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 100 | # The first few visitor methods handle nodes that generator new |
| 101 | # code objects |
| 102 | |
| 103 | def visitModule(self, node): |
| 104 | lnf = walk(node.node, LocalNameFinder(), 0) |
| 105 | self.locals.push(lnf.getLocals()) |
| 106 | self.setDocstring(node.doc) |
| 107 | self.visit(node.node) |
| 108 | self.emit('LOAD_CONST', None) |
| 109 | self.emit('RETURN_VALUE') |
| 110 | |
| 111 | def visitFunction(self, node): |
| 112 | self._visitFuncOrLambda(node, isLambda=0) |
| 113 | self.storeName(node.name) |
| 114 | |
| 115 | def visitLambda(self, node): |
| 116 | self._visitFuncOrLambda(node, isLambda=1) |
| 117 | ## self.storeName("<lambda>") |
| 118 | |
| 119 | def _visitFuncOrLambda(self, node, isLambda): |
| 120 | gen = FunctionCodeGenerator(node, self.filename, isLambda) |
| 121 | walk(node.code, gen) |
| 122 | gen.finish() |
| 123 | self.emit('SET_LINENO', node.lineno) |
| 124 | for default in node.defaults: |
| 125 | self.visit(default) |
| 126 | self.emit('LOAD_CONST', gen.getCode()) |
| 127 | self.emit('MAKE_FUNCTION', len(node.defaults)) |
| 128 | |
| 129 | def visitClass(self, node): |
| 130 | gen = ClassCodeGenerator(node, self.filename) |
| 131 | walk(node.code, gen) |
| 132 | gen.finish() |
| 133 | self.emit('SET_LINENO', node.lineno) |
| 134 | self.emit('LOAD_CONST', node.name) |
| 135 | for base in node.bases: |
| 136 | self.visit(base) |
| 137 | self.emit('BUILD_TUPLE', len(node.bases)) |
| 138 | self.emit('LOAD_CONST', gen.getCode()) |
| 139 | self.emit('MAKE_FUNCTION', 0) |
| 140 | self.emit('CALL_FUNCTION', 0) |
| 141 | self.emit('BUILD_CLASS') |
| 142 | self.storeName(node.name) |
| 143 | |
| 144 | # The rest are standard visitor methods |
| 145 | |
| 146 | # The next few implement control-flow statements |
| 147 | |
| 148 | def visitIf(self, node): |
| 149 | end = self.newBlock() |
| 150 | numtests = len(node.tests) |
| 151 | for i in range(numtests): |
| 152 | test, suite = node.tests[i] |
| 153 | if hasattr(test, 'lineno'): |
| 154 | self.emit('SET_LINENO', test.lineno) |
| 155 | self.visit(test) |
| 156 | ## if i == numtests - 1 and not node.else_: |
| 157 | ## nextTest = end |
| 158 | ## else: |
| 159 | ## nextTest = self.newBlock() |
| 160 | nextTest = self.newBlock() |
| 161 | self.emit('JUMP_IF_FALSE', nextTest) |
| 162 | self.nextBlock() |
| 163 | self.emit('POP_TOP') |
| 164 | self.visit(suite) |
| 165 | self.emit('JUMP_FORWARD', end) |
| 166 | self.nextBlock(nextTest) |
| 167 | self.emit('POP_TOP') |
| 168 | if node.else_: |
| 169 | self.visit(node.else_) |
| 170 | self.nextBlock(end) |
| 171 | |
| 172 | def visitWhile(self, node): |
| 173 | self.emit('SET_LINENO', node.lineno) |
| 174 | |
| 175 | loop = self.newBlock() |
| 176 | else_ = self.newBlock() |
| 177 | |
| 178 | after = self.newBlock() |
| 179 | self.emit('SETUP_LOOP', after) |
| 180 | |
| 181 | self.nextBlock(loop) |
| 182 | self.loops.push(loop) |
| 183 | |
| 184 | self.emit('SET_LINENO', node.lineno) |
| 185 | self.visit(node.test) |
| 186 | self.emit('JUMP_IF_FALSE', else_ or after) |
| 187 | |
| 188 | self.nextBlock() |
| 189 | self.emit('POP_TOP') |
| 190 | self.visit(node.body) |
| 191 | self.emit('JUMP_ABSOLUTE', loop) |
| 192 | |
| 193 | self.startBlock(else_) # or just the POPs if not else clause |
| 194 | self.emit('POP_TOP') |
| 195 | self.emit('POP_BLOCK') |
| 196 | if node.else_: |
| 197 | self.visit(node.else_) |
| 198 | self.loops.pop() |
| 199 | self.nextBlock(after) |
| 200 | |
| 201 | def visitFor(self, node): |
| 202 | start = self.newBlock() |
| 203 | anchor = self.newBlock() |
| 204 | after = self.newBlock() |
| 205 | self.loops.push(start) |
| 206 | |
| 207 | self.emit('SET_LINENO', node.lineno) |
| 208 | self.emit('SETUP_LOOP', after) |
| 209 | self.visit(node.list) |
| 210 | self.visit(ast.Const(0)) |
| 211 | self.nextBlock(start) |
| 212 | self.emit('SET_LINENO', node.lineno) |
| 213 | self.emit('FOR_LOOP', anchor) |
| 214 | self.visit(node.assign) |
| 215 | self.visit(node.body) |
| 216 | self.emit('JUMP_ABSOLUTE', start) |
| 217 | self.nextBlock(anchor) |
| 218 | self.emit('POP_BLOCK') |
| 219 | if node.else_: |
| 220 | self.visit(node.else_) |
| 221 | self.loops.pop() |
| 222 | self.nextBlock(after) |
| 223 | |
| 224 | def visitBreak(self, node): |
| 225 | if not self.loops: |
| 226 | raise SyntaxError, "'break' outside loop (%s, %d)" % \ |
| 227 | (self.filename, node.lineno) |
| 228 | self.emit('SET_LINENO', node.lineno) |
| 229 | self.emit('BREAK_LOOP') |
| 230 | |
| 231 | def visitContinue(self, node): |
| 232 | if not self.loops: |
| 233 | raise SyntaxError, "'continue' outside loop (%s, %d)" % \ |
| 234 | (self.filename, node.lineno) |
| 235 | l = self.loops.top() |
| 236 | self.emit('SET_LINENO', node.lineno) |
| 237 | self.emit('JUMP_ABSOLUTE', l) |
| 238 | self.nextBlock() |
| 239 | |
| 240 | def visitTest(self, node, jump): |
| 241 | end = self.newBlock() |
| 242 | for child in node.nodes[:-1]: |
| 243 | self.visit(child) |
| 244 | self.emit(jump, end) |
| 245 | self.nextBlock() |
| 246 | self.emit('POP_TOP') |
| 247 | self.visit(node.nodes[-1]) |
| 248 | self.nextBlock(end) |
| 249 | |
| 250 | def visitAnd(self, node): |
| 251 | self.visitTest(node, 'JUMP_IF_FALSE') |
| 252 | |
| 253 | def visitOr(self, node): |
| 254 | self.visitTest(node, 'JUMP_IF_TRUE') |
| 255 | |
| 256 | def visitCompare(self, node): |
| 257 | self.visit(node.expr) |
| 258 | cleanup = self.newBlock() |
| 259 | for op, code in node.ops[:-1]: |
| 260 | self.visit(code) |
| 261 | self.emit('DUP_TOP') |
| 262 | self.emit('ROT_THREE') |
| 263 | self.emit('COMPARE_OP', op) |
| 264 | self.emit('JUMP_IF_FALSE', cleanup) |
| 265 | self.nextBlock() |
| 266 | self.emit('POP_TOP') |
| 267 | # now do the last comparison |
| 268 | if node.ops: |
| 269 | op, code = node.ops[-1] |
| 270 | self.visit(code) |
| 271 | self.emit('COMPARE_OP', op) |
| 272 | if len(node.ops) > 1: |
| 273 | end = self.newBlock() |
| 274 | self.emit('JUMP_FORWARD', end) |
| 275 | self.nextBlock(cleanup) |
| 276 | self.emit('ROT_TWO') |
| 277 | self.emit('POP_TOP') |
| 278 | self.nextBlock(end) |
| 279 | |
| 280 | # exception related |
| 281 | |
| 282 | def visitAssert(self, node): |
| 283 | # XXX would be interesting to implement this via a |
| 284 | # transformation of the AST before this stage |
| 285 | end = self.newBlock() |
| 286 | self.emit('SET_LINENO', node.lineno) |
| 287 | # XXX __debug__ and AssertionError appear to be special cases |
| 288 | # -- they are always loaded as globals even if there are local |
| 289 | # names. I guess this is a sort of renaming op. |
| 290 | self.emit('LOAD_GLOBAL', '__debug__') |
| 291 | self.emit('JUMP_IF_FALSE', end) |
| 292 | self.nextBlock() |
| 293 | self.emit('POP_TOP') |
| 294 | self.visit(node.test) |
| 295 | self.emit('JUMP_IF_TRUE', end) |
| 296 | self.nextBlock() |
| 297 | self.emit('LOAD_GLOBAL', 'AssertionError') |
| 298 | self.visit(node.fail) |
| 299 | self.emit('RAISE_VARARGS', 2) |
| 300 | self.nextBlock(end) |
| 301 | self.emit('POP_TOP') |
| 302 | |
| 303 | def visitRaise(self, node): |
| 304 | self.emit('SET_LINENO', node.lineno) |
| 305 | n = 0 |
| 306 | if node.expr1: |
| 307 | self.visit(node.expr1) |
| 308 | n = n + 1 |
| 309 | if node.expr2: |
| 310 | self.visit(node.expr2) |
| 311 | n = n + 1 |
| 312 | if node.expr3: |
| 313 | self.visit(node.expr3) |
| 314 | n = n + 1 |
| 315 | self.emit('RAISE_VARARGS', n) |
| 316 | |
| 317 | def visitTryExcept(self, node): |
| 318 | handlers = self.newBlock() |
| 319 | end = self.newBlock() |
| 320 | if node.else_: |
| 321 | lElse = self.newBlock() |
| 322 | else: |
| 323 | lElse = end |
| 324 | self.emit('SET_LINENO', node.lineno) |
| 325 | self.emit('SETUP_EXCEPT', handlers) |
| 326 | self.visit(node.body) |
| 327 | self.emit('POP_BLOCK') |
| 328 | self.emit('JUMP_FORWARD', lElse) |
| 329 | self.nextBlock(handlers) |
| 330 | |
| 331 | last = len(node.handlers) - 1 |
| 332 | for i in range(len(node.handlers)): |
| 333 | expr, target, body = node.handlers[i] |
| 334 | if hasattr(expr, 'lineno'): |
| 335 | self.emit('SET_LINENO', expr.lineno) |
| 336 | if expr: |
| 337 | self.emit('DUP_TOP') |
| 338 | self.visit(expr) |
| 339 | self.emit('COMPARE_OP', 'exception match') |
| 340 | next = self.newBlock() |
| 341 | self.emit('JUMP_IF_FALSE', next) |
| 342 | self.nextBlock() |
| 343 | self.emit('POP_TOP') |
| 344 | self.emit('POP_TOP') |
| 345 | if target: |
| 346 | self.visit(target) |
| 347 | else: |
| 348 | self.emit('POP_TOP') |
| 349 | self.emit('POP_TOP') |
| 350 | self.visit(body) |
| 351 | self.emit('JUMP_FORWARD', end) |
| 352 | if expr: |
| 353 | self.nextBlock(next) |
| 354 | self.emit('POP_TOP') |
| 355 | self.emit('END_FINALLY') |
| 356 | if node.else_: |
| 357 | self.nextBlock(lElse) |
| 358 | self.visit(node.else_) |
| 359 | self.nextBlock(end) |
| 360 | |
| 361 | def visitTryFinally(self, node): |
| 362 | final = self.newBlock() |
| 363 | self.emit('SET_LINENO', node.lineno) |
| 364 | self.emit('SETUP_FINALLY', final) |
| 365 | self.visit(node.body) |
| 366 | self.emit('POP_BLOCK') |
| 367 | self.emit('LOAD_CONST', None) |
| 368 | self.nextBlock(final) |
| 369 | self.visit(node.final) |
| 370 | self.emit('END_FINALLY') |
| 371 | |
| 372 | # misc |
| 373 | |
| 374 | ## def visitStmt(self, node): |
| 375 | ## # nothing to do except walk the children |
| 376 | ## pass |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 377 | |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 378 | def visitDiscard(self, node): |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 379 | self.visit(node.expr) |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 380 | self.emit('POP_TOP') |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 381 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 382 | def visitConst(self, node): |
| 383 | self.emit('LOAD_CONST', node.value) |
| 384 | |
| 385 | def visitKeyword(self, node): |
| 386 | self.emit('LOAD_CONST', node.name) |
| 387 | self.visit(node.expr) |
| 388 | |
| 389 | def visitGlobal(self, node): |
| 390 | # no code to generate |
| 391 | pass |
| 392 | |
| 393 | def visitName(self, node): |
| 394 | self.loadName(node.name) |
| 395 | |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 396 | def visitPass(self, node): |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 397 | self.emit('SET_LINENO', node.lineno) |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 398 | |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 399 | def visitImport(self, node): |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 400 | self.emit('SET_LINENO', node.lineno) |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 401 | for name in node.names: |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 402 | self.emit('IMPORT_NAME', name) |
Jeremy Hylton | 3e0910c | 2000-02-10 17:20:39 +0000 | [diff] [blame] | 403 | self.storeName(name) |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 404 | |
| 405 | def visitFrom(self, node): |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 406 | self.emit('SET_LINENO', node.lineno) |
| 407 | self.emit('IMPORT_NAME', node.modname) |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 408 | for name in node.names: |
Jeremy Hylton | 126960b | 2000-02-14 21:33:10 +0000 | [diff] [blame] | 409 | if name == '*': |
| 410 | self.namespace = 0 |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 411 | self.emit('IMPORT_FROM', name) |
| 412 | self.emit('POP_TOP') |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 413 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 414 | def visitGetattr(self, node): |
| 415 | self.visit(node.expr) |
| 416 | self.emit('LOAD_ATTR', node.attrname) |
| 417 | |
| 418 | # next five implement assignments |
| 419 | |
| 420 | def visitAssign(self, node): |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 421 | self.emit('SET_LINENO', node.lineno) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 422 | self.visit(node.expr) |
| 423 | dups = len(node.nodes) - 1 |
| 424 | for i in range(len(node.nodes)): |
| 425 | elt = node.nodes[i] |
| 426 | if i < dups: |
| 427 | self.emit('DUP_TOP') |
| 428 | if isinstance(elt, ast.Node): |
| 429 | self.visit(elt) |
Jeremy Hylton | 3050d51 | 2000-02-12 00:12:38 +0000 | [diff] [blame] | 430 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 431 | def visitAssName(self, node): |
| 432 | if node.flags == 'OP_ASSIGN': |
| 433 | self.storeName(node.name) |
| 434 | elif node.flags == 'OP_DELETE': |
| 435 | self.delName(node.name) |
| 436 | else: |
| 437 | print "oops", node.flags |
Jeremy Hylton | 76d01b8 | 2000-02-11 20:27:07 +0000 | [diff] [blame] | 438 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 439 | def visitAssAttr(self, node): |
| 440 | self.visit(node.expr) |
| 441 | if node.flags == 'OP_ASSIGN': |
| 442 | self.emit('STORE_ATTR', node.attrname) |
| 443 | elif node.flags == 'OP_DELETE': |
| 444 | self.emit('DELETE_ATTR', node.attrname) |
| 445 | else: |
| 446 | print "warning: unexpected flags:", node.flags |
| 447 | print node |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 448 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 449 | def visitAssTuple(self, node): |
| 450 | if findOp(node) != 'OP_DELETE': |
| 451 | self.emit('UNPACK_TUPLE', len(node.nodes)) |
| 452 | for child in node.nodes: |
| 453 | self.visit(child) |
| 454 | |
| 455 | visitAssList = visitAssTuple |
| 456 | |
| 457 | def visitExec(self, node): |
| 458 | self.visit(node.expr) |
| 459 | if node.locals is None: |
| 460 | self.emit('LOAD_CONST', None) |
| 461 | else: |
| 462 | self.visit(node.locals) |
| 463 | if node.globals is None: |
| 464 | self.emit('DUP_TOP') |
| 465 | else: |
| 466 | self.visit(node.globals) |
| 467 | self.emit('EXEC_STMT') |
Jeremy Hylton | 76d01b8 | 2000-02-11 20:27:07 +0000 | [diff] [blame] | 468 | |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 469 | def visitCallFunc(self, node): |
Jeremy Hylton | 3050d51 | 2000-02-12 00:12:38 +0000 | [diff] [blame] | 470 | pos = 0 |
| 471 | kw = 0 |
Jeremy Hylton | 4eb504c | 2000-02-10 20:55:50 +0000 | [diff] [blame] | 472 | if hasattr(node, 'lineno'): |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 473 | self.emit('SET_LINENO', node.lineno) |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 474 | self.visit(node.node) |
| 475 | for arg in node.args: |
| 476 | self.visit(arg) |
Jeremy Hylton | 3050d51 | 2000-02-12 00:12:38 +0000 | [diff] [blame] | 477 | if isinstance(arg, ast.Keyword): |
| 478 | kw = kw + 1 |
| 479 | else: |
| 480 | pos = pos + 1 |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 481 | self.emit('CALL_FUNCTION', kw << 8 | pos) |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 482 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 483 | def visitPrint(self, node): |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 484 | self.emit('SET_LINENO', node.lineno) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 485 | for child in node.nodes: |
| 486 | self.visit(child) |
| 487 | self.emit('PRINT_ITEM') |
| 488 | |
| 489 | def visitPrintnl(self, node): |
| 490 | self.visitPrint(node) |
| 491 | self.emit('PRINT_NEWLINE') |
| 492 | |
| 493 | def visitReturn(self, node): |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 494 | self.emit('SET_LINENO', node.lineno) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 495 | self.visit(node.value) |
| 496 | self.emit('RETURN_VALUE') |
Jeremy Hylton | 4024560 | 2000-02-08 21:15:48 +0000 | [diff] [blame] | 497 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 498 | # slice and subscript stuff |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 499 | |
| 500 | def visitSlice(self, node): |
| 501 | self.visit(node.expr) |
| 502 | slice = 0 |
| 503 | if node.lower: |
| 504 | self.visit(node.lower) |
| 505 | slice = slice | 1 |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 506 | if node.upper: |
| 507 | self.visit(node.upper) |
| 508 | slice = slice | 2 |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 509 | if node.flags == 'OP_APPLY': |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 510 | self.emit('SLICE+%d' % slice) |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 511 | elif node.flags == 'OP_ASSIGN': |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 512 | self.emit('STORE_SLICE+%d' % slice) |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 513 | elif node.flags == 'OP_DELETE': |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 514 | self.emit('DELETE_SLICE+%d' % slice) |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 515 | else: |
Jeremy Hylton | 4f6bcd8 | 2000-02-15 23:45:26 +0000 | [diff] [blame] | 516 | print "weird slice", node.flags |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 517 | raise |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 518 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 519 | def visitSubscript(self, node): |
Jeremy Hylton | 4024560 | 2000-02-08 21:15:48 +0000 | [diff] [blame] | 520 | self.visit(node.expr) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 521 | for sub in node.subs: |
| 522 | self.visit(sub) |
| 523 | if len(node.subs) > 1: |
| 524 | self.emit('BUILD_TUPLE', len(node.subs)) |
| 525 | if node.flags == 'OP_APPLY': |
| 526 | self.emit('BINARY_SUBSCR') |
| 527 | elif node.flags == 'OP_ASSIGN': |
| 528 | self.emit('STORE_SUBSCR') |
Jeremy Hylton | 3ec7e2c | 2000-02-17 22:09:35 +0000 | [diff] [blame] | 529 | elif node.flags == 'OP_DELETE': |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 530 | self.emit('DELETE_SUBSCR') |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 531 | |
Jeremy Hylton | 7fab23e | 2000-03-06 19:10:54 +0000 | [diff] [blame] | 532 | # binary ops |
| 533 | |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 534 | def binaryOp(self, node, op): |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 535 | self.visit(node.left) |
| 536 | self.visit(node.right) |
| 537 | self.emit(op) |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 538 | |
| 539 | def visitAdd(self, node): |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 540 | return self.binaryOp(node, 'BINARY_ADD') |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 541 | |
| 542 | def visitSub(self, node): |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 543 | return self.binaryOp(node, 'BINARY_SUBTRACT') |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 544 | |
| 545 | def visitMul(self, node): |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 546 | return self.binaryOp(node, 'BINARY_MULTIPLY') |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 547 | |
| 548 | def visitDiv(self, node): |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 549 | return self.binaryOp(node, 'BINARY_DIVIDE') |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 550 | |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 551 | def visitMod(self, node): |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 552 | return self.binaryOp(node, 'BINARY_MODULO') |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 553 | |
Jeremy Hylton | 126960b | 2000-02-14 21:33:10 +0000 | [diff] [blame] | 554 | def visitPower(self, node): |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 555 | return self.binaryOp(node, 'BINARY_POWER') |
Jeremy Hylton | 126960b | 2000-02-14 21:33:10 +0000 | [diff] [blame] | 556 | |
| 557 | def visitLeftShift(self, node): |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 558 | return self.binaryOp(node, 'BINARY_LSHIFT') |
Jeremy Hylton | 126960b | 2000-02-14 21:33:10 +0000 | [diff] [blame] | 559 | |
| 560 | def visitRightShift(self, node): |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 561 | return self.binaryOp(node, 'BINARY_RSHIFT') |
Jeremy Hylton | 126960b | 2000-02-14 21:33:10 +0000 | [diff] [blame] | 562 | |
Jeremy Hylton | 7fab23e | 2000-03-06 19:10:54 +0000 | [diff] [blame] | 563 | # unary ops |
| 564 | |
| 565 | def unaryOp(self, node, op): |
| 566 | self.visit(node.expr) |
| 567 | self.emit(op) |
Jeremy Hylton | 7fab23e | 2000-03-06 19:10:54 +0000 | [diff] [blame] | 568 | |
Jeremy Hylton | 126960b | 2000-02-14 21:33:10 +0000 | [diff] [blame] | 569 | def visitInvert(self, node): |
| 570 | return self.unaryOp(node, 'UNARY_INVERT') |
| 571 | |
Jeremy Hylton | 4024560 | 2000-02-08 21:15:48 +0000 | [diff] [blame] | 572 | def visitUnarySub(self, node): |
| 573 | return self.unaryOp(node, 'UNARY_NEGATIVE') |
| 574 | |
| 575 | def visitUnaryAdd(self, node): |
| 576 | return self.unaryOp(node, 'UNARY_POSITIVE') |
| 577 | |
| 578 | def visitUnaryInvert(self, node): |
| 579 | return self.unaryOp(node, 'UNARY_INVERT') |
| 580 | |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 581 | def visitNot(self, node): |
| 582 | return self.unaryOp(node, 'UNARY_NOT') |
| 583 | |
Jeremy Hylton | 4024560 | 2000-02-08 21:15:48 +0000 | [diff] [blame] | 584 | def visitBackquote(self, node): |
| 585 | return self.unaryOp(node, 'UNARY_CONVERT') |
| 586 | |
Jeremy Hylton | 7fab23e | 2000-03-06 19:10:54 +0000 | [diff] [blame] | 587 | # bit ops |
| 588 | |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 589 | def bitOp(self, nodes, op): |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 590 | self.visit(nodes[0]) |
| 591 | for node in nodes[1:]: |
| 592 | self.visit(node) |
| 593 | self.emit(op) |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 594 | |
| 595 | def visitBitand(self, node): |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 596 | return self.bitOp(node.nodes, 'BINARY_AND') |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 597 | |
| 598 | def visitBitor(self, node): |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 599 | return self.bitOp(node.nodes, 'BINARY_OR') |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 600 | |
| 601 | def visitBitxor(self, node): |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 602 | return self.bitOp(node.nodes, 'BINARY_XOR') |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 603 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 604 | # object constructors |
Jeremy Hylton | 4024560 | 2000-02-08 21:15:48 +0000 | [diff] [blame] | 605 | |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 606 | def visitEllipsis(self, node): |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 607 | self.emit('LOAD_CONST', Ellipsis) |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 608 | |
Jeremy Hylton | 4024560 | 2000-02-08 21:15:48 +0000 | [diff] [blame] | 609 | def visitTuple(self, node): |
| 610 | for elt in node.nodes: |
| 611 | self.visit(elt) |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 612 | self.emit('BUILD_TUPLE', len(node.nodes)) |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 613 | |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 614 | def visitList(self, node): |
| 615 | for elt in node.nodes: |
| 616 | self.visit(elt) |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 617 | self.emit('BUILD_LIST', len(node.nodes)) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 618 | |
| 619 | def visitSliceobj(self, node): |
| 620 | for child in node.nodes: |
| 621 | self.visit(child) |
| 622 | self.emit('BUILD_SLICE', len(node.nodes)) |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 623 | |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 624 | def visitDict(self, node): |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 625 | # XXX is this a good general strategy? could it be done |
| 626 | # separately from the general visitor |
| 627 | lineno = getattr(node, 'lineno', None) |
| 628 | if lineno: |
| 629 | self.emit('SET_LINENO', lineno) |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 630 | self.emit('BUILD_MAP', 0) |
| 631 | for k, v in node.items: |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 632 | lineno2 = getattr(node, 'lineno', None) |
| 633 | if lineno != lineno2: |
| 634 | self.emit('SET_LINENO', lineno2) |
| 635 | lineno = lineno2 |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 636 | self.emit('DUP_TOP') |
| 637 | self.visit(v) |
| 638 | self.emit('ROT_TWO') |
| 639 | self.visit(k) |
| 640 | self.emit('STORE_SUBSCR') |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 641 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 642 | class ModuleCodeGenerator(CodeGenerator): |
| 643 | super_init = CodeGenerator.__init__ |
| 644 | |
| 645 | def __init__(self, filename): |
| 646 | # XXX <module> is ? in compile.c |
| 647 | self.graph = pyassem.PyFlowGraph("<module>", filename) |
| 648 | self.super_init(filename) |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 649 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 650 | class FunctionCodeGenerator(CodeGenerator): |
| 651 | super_init = CodeGenerator.__init__ |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 652 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 653 | optimized = 1 |
| 654 | lambdaCount = 0 |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 655 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 656 | def __init__(self, func, filename, isLambda=0): |
| 657 | if isLambda: |
| 658 | klass = FunctionCodeGenerator |
| 659 | name = "<lambda.%d>" % klass.lambdaCount |
| 660 | klass.lambdaCount = klass.lambdaCount + 1 |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 661 | else: |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 662 | name = func.name |
| 663 | args, hasTupleArg = generateArgList(func.argnames) |
| 664 | self.graph = pyassem.PyFlowGraph(name, filename, args, |
| 665 | optimized=1) |
| 666 | self.isLambda = isLambda |
| 667 | self.super_init(filename) |
| 668 | |
| 669 | lnf = walk(func.code, LocalNameFinder(args), 0) |
| 670 | self.locals.push(lnf.getLocals()) |
| 671 | if func.varargs: |
| 672 | self.graph.setFlag(CO_VARARGS) |
| 673 | if func.kwargs: |
| 674 | self.graph.setFlag(CO_VARKEYWORDS) |
| 675 | self.emit('SET_LINENO', func.lineno) |
| 676 | if hasTupleArg: |
| 677 | self.generateArgUnpack(func.argnames) |
| 678 | |
| 679 | def finish(self): |
| 680 | self.graph.startExitBlock() |
| 681 | if not self.isLambda: |
| 682 | self.emit('LOAD_CONST', None) |
| 683 | self.emit('RETURN_VALUE') |
| 684 | |
| 685 | def generateArgUnpack(self, args): |
| 686 | count = 0 |
| 687 | for arg in args: |
| 688 | if type(arg) == types.TupleType: |
| 689 | self.emit('LOAD_FAST', '.nested%d' % count) |
| 690 | count = count + 1 |
| 691 | self.unpackTuple(arg) |
| 692 | |
| 693 | def unpackTuple(self, tup): |
| 694 | self.emit('UNPACK_TUPLE', len(tup)) |
| 695 | for elt in tup: |
| 696 | if type(elt) == types.TupleType: |
| 697 | self.unpackTuple(elt) |
| 698 | else: |
| 699 | self.emit('STORE_FAST', elt) |
| 700 | |
| 701 | class ClassCodeGenerator(CodeGenerator): |
| 702 | super_init = CodeGenerator.__init__ |
| 703 | |
| 704 | def __init__(self, klass, filename): |
| 705 | self.graph = pyassem.PyFlowGraph(klass.name, filename, |
| 706 | optimized=0) |
| 707 | self.super_init(filename) |
| 708 | lnf = walk(klass.code, LocalNameFinder(), 0) |
| 709 | self.locals.push(lnf.getLocals()) |
| 710 | |
| 711 | def finish(self): |
| 712 | self.graph.startExitBlock() |
| 713 | self.emit('LOAD_LOCALS') |
| 714 | self.emit('RETURN_VALUE') |
| 715 | |
| 716 | |
| 717 | def generateArgList(arglist): |
| 718 | """Generate an arg list marking TupleArgs""" |
| 719 | args = [] |
| 720 | extra = [] |
| 721 | count = 0 |
| 722 | for elt in arglist: |
| 723 | if type(elt) == types.StringType: |
| 724 | args.append(elt) |
| 725 | elif type(elt) == types.TupleType: |
| 726 | args.append(TupleArg(count, elt)) |
| 727 | count = count + 1 |
| 728 | extra.extend(misc.flatten(elt)) |
| 729 | else: |
| 730 | raise ValueError, "unexpect argument type:", elt |
| 731 | return args + extra, count |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 732 | |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 733 | class LocalNameFinder: |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 734 | """Find local names in scope""" |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 735 | def __init__(self, names=()): |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 736 | self.names = misc.Set() |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 737 | self.globals = misc.Set() |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 738 | for name in names: |
| 739 | self.names.add(name) |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 740 | |
| 741 | def getLocals(self): |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 742 | for elt in self.globals.elements(): |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 743 | if self.names.has_elt(elt): |
| 744 | self.names.remove(elt) |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 745 | return self.names |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 746 | |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 747 | def visitDict(self, node): |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 748 | pass |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 749 | |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 750 | def visitGlobal(self, node): |
| 751 | for name in node.names: |
| 752 | self.globals.add(name) |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 753 | |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 754 | def visitFunction(self, node): |
| 755 | self.names.add(node.name) |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 756 | |
Jeremy Hylton | 76d01b8 | 2000-02-11 20:27:07 +0000 | [diff] [blame] | 757 | def visitLambda(self, node): |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 758 | pass |
Jeremy Hylton | 76d01b8 | 2000-02-11 20:27:07 +0000 | [diff] [blame] | 759 | |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 760 | def visitImport(self, node): |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 761 | for name in node.names: |
| 762 | self.names.add(name) |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 763 | |
| 764 | def visitFrom(self, node): |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 765 | for name in node.names: |
| 766 | self.names.add(name) |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 767 | |
Jeremy Hylton | 7fab23e | 2000-03-06 19:10:54 +0000 | [diff] [blame] | 768 | def visitClass(self, node): |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 769 | self.names.add(node.name) |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 770 | |
| 771 | def visitAssName(self, node): |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 772 | self.names.add(node.name) |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 773 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 774 | def findOp(node): |
| 775 | """Find the op (DELETE, LOAD, STORE) in an AssTuple tree""" |
| 776 | v = OpFinder() |
| 777 | walk(node, v, 0) |
| 778 | return v.op |
| 779 | |
Jeremy Hylton | 3ec7e2c | 2000-02-17 22:09:35 +0000 | [diff] [blame] | 780 | class OpFinder: |
| 781 | def __init__(self): |
| 782 | self.op = None |
| 783 | def visitAssName(self, node): |
| 784 | if self.op is None: |
| 785 | self.op = node.flags |
| 786 | elif self.op != node.flags: |
| 787 | raise ValueError, "mixed ops in stmt" |
| 788 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 789 | if __name__ == "__main__": |
| 790 | import sys |
Jeremy Hylton | 3ec7e2c | 2000-02-17 22:09:35 +0000 | [diff] [blame] | 791 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 792 | for file in sys.argv[1:]: |
| 793 | compile(file) |