Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 1 | import imp |
Jeremy Hylton | 53187f3 | 2000-02-08 19:01:29 +0000 | [diff] [blame] | 2 | import os |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 3 | import marshal |
Jeremy Hylton | 53187f3 | 2000-02-08 19:01:29 +0000 | [diff] [blame] | 4 | import stat |
Jeremy Hylton | 2051608 | 2000-09-01 20:33:26 +0000 | [diff] [blame] | 5 | import string |
Jeremy Hylton | 53187f3 | 2000-02-08 19:01:29 +0000 | [diff] [blame] | 6 | import struct |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 7 | import sys |
Jeremy Hylton | ad9a86f | 2000-02-16 00:55:44 +0000 | [diff] [blame] | 8 | import types |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 9 | from cStringIO import StringIO |
| 10 | |
| 11 | from compiler import ast, parse, walk |
Jeremy Hylton | 364f9b9 | 2001-04-12 06:40:42 +0000 | [diff] [blame] | 12 | from compiler import pyassem, misc, future, symbols |
| 13 | from compiler.consts import SC_LOCAL, SC_GLOBAL, SC_FREE, SC_CELL |
| 14 | from compiler.pyassem import CO_VARARGS, CO_VARKEYWORDS, CO_NEWLOCALS,\ |
| 15 | CO_NESTED, TupleArg |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 16 | |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 17 | # Do we have Python 1.x or Python 2.x? |
| 18 | try: |
| 19 | VERSION = sys.version_info[0] |
| 20 | except AttributeError: |
| 21 | VERSION = 1 |
| 22 | |
Jeremy Hylton | be317e6 | 2000-05-02 22:32:59 +0000 | [diff] [blame] | 23 | callfunc_opcode_info = { |
| 24 | # (Have *args, Have **args) : opcode |
| 25 | (0,0) : "CALL_FUNCTION", |
| 26 | (1,0) : "CALL_FUNCTION_VAR", |
| 27 | (0,1) : "CALL_FUNCTION_KW", |
| 28 | (1,1) : "CALL_FUNCTION_VAR_KW", |
| 29 | } |
| 30 | |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 31 | def compile(filename, display=0): |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 32 | f = open(filename) |
| 33 | buf = f.read() |
| 34 | f.close() |
| 35 | mod = Module(buf, filename) |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 36 | mod.compile(display) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 37 | f = open(filename + "c", "wb") |
| 38 | mod.dump(f) |
| 39 | f.close() |
| 40 | |
| 41 | class Module: |
| 42 | def __init__(self, source, filename): |
Jeremy Hylton | 2afff32 | 2001-08-27 21:51:52 +0000 | [diff] [blame^] | 43 | self.filename = os.path.abspath(filename) |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 44 | self.source = source |
| 45 | self.code = None |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 46 | |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 47 | def compile(self, display=0): |
Jeremy Hylton | 80e29bd | 2001-04-09 04:28:48 +0000 | [diff] [blame] | 48 | tree = parse(self.source) |
Jeremy Hylton | 2afff32 | 2001-08-27 21:51:52 +0000 | [diff] [blame^] | 49 | gen = NestedScopeModuleCodeGenerator(self.filename) |
| 50 | walk(tree, gen, verbose=1) |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 51 | if display: |
| 52 | import pprint |
Jeremy Hylton | 80e29bd | 2001-04-09 04:28:48 +0000 | [diff] [blame] | 53 | print pprint.pprint(tree) |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 54 | self.code = gen.getCode() |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 55 | |
| 56 | def dump(self, f): |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 57 | f.write(self.getPycHeader()) |
| 58 | marshal.dump(self.code, f) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 59 | |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 60 | MAGIC = imp.get_magic() |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 61 | |
| 62 | def getPycHeader(self): |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 63 | # compile.c uses marshal to write a long directly, with |
| 64 | # calling the interface that would also generate a 1-byte code |
| 65 | # to indicate the type of the value. simplest way to get the |
| 66 | # same effect is to call marshal and then skip the code. |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 67 | mtime = os.stat(self.filename)[stat.ST_MTIME] |
| 68 | mtime = struct.pack('i', mtime) |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 69 | return self.MAGIC + mtime |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 70 | |
Jeremy Hylton | 364f9b9 | 2001-04-12 06:40:42 +0000 | [diff] [blame] | 71 | class LocalNameFinder: |
| 72 | """Find local names in scope""" |
| 73 | def __init__(self, names=()): |
| 74 | self.names = misc.Set() |
| 75 | self.globals = misc.Set() |
| 76 | for name in names: |
| 77 | self.names.add(name) |
| 78 | |
| 79 | # XXX list comprehensions and for loops |
| 80 | |
| 81 | def getLocals(self): |
| 82 | for elt in self.globals.elements(): |
| 83 | if self.names.has_elt(elt): |
| 84 | self.names.remove(elt) |
| 85 | return self.names |
| 86 | |
| 87 | def visitDict(self, node): |
| 88 | pass |
| 89 | |
| 90 | def visitGlobal(self, node): |
| 91 | for name in node.names: |
| 92 | self.globals.add(name) |
| 93 | |
| 94 | def visitFunction(self, node): |
| 95 | self.names.add(node.name) |
| 96 | |
| 97 | def visitLambda(self, node): |
| 98 | pass |
| 99 | |
| 100 | def visitImport(self, node): |
| 101 | for name, alias in node.names: |
| 102 | self.names.add(alias or name) |
| 103 | |
| 104 | def visitFrom(self, node): |
| 105 | for name, alias in node.names: |
| 106 | self.names.add(alias or name) |
| 107 | |
| 108 | def visitClass(self, node): |
| 109 | self.names.add(node.name) |
| 110 | |
| 111 | def visitAssName(self, node): |
| 112 | self.names.add(node.name) |
| 113 | |
Jeremy Hylton | 2afff32 | 2001-08-27 21:51:52 +0000 | [diff] [blame^] | 114 | def is_constant_false(node): |
| 115 | if isinstance(node, ast.Const): |
| 116 | if not node.value: |
| 117 | return 1 |
| 118 | return 0 |
| 119 | |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 120 | class CodeGenerator: |
Jeremy Hylton | 364f9b9 | 2001-04-12 06:40:42 +0000 | [diff] [blame] | 121 | """Defines basic code generator for Python bytecode |
| 122 | |
| 123 | This class is an abstract base class. Concrete subclasses must |
| 124 | define an __init__() that defines self.graph and then calls the |
| 125 | __init__() defined in this class. |
| 126 | |
| 127 | The concrete class must also define the class attributes |
| 128 | NameFinder, FunctionGen, and ClassGen. These attributes can be |
| 129 | defined in the initClass() method, which is a hook for |
| 130 | initializing these methods after all the classes have been |
| 131 | defined. |
| 132 | """ |
Jeremy Hylton | 3e0910c | 2000-02-10 17:20:39 +0000 | [diff] [blame] | 133 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 134 | optimized = 0 # is namespace access optimized? |
Jeremy Hylton | 364f9b9 | 2001-04-12 06:40:42 +0000 | [diff] [blame] | 135 | __initialized = None |
Jeremy Hylton | 3050d51 | 2000-02-12 00:12:38 +0000 | [diff] [blame] | 136 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 137 | def __init__(self, filename): |
Jeremy Hylton | 364f9b9 | 2001-04-12 06:40:42 +0000 | [diff] [blame] | 138 | if self.__initialized is None: |
| 139 | self.initClass() |
| 140 | self.__class__.__initialized = 1 |
| 141 | self.checkClass() |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 142 | self.filename = filename |
| 143 | self.locals = misc.Stack() |
| 144 | self.loops = misc.Stack() |
| 145 | self.curStack = 0 |
| 146 | self.maxStack = 0 |
Jeremy Hylton | 92f3972 | 2000-09-01 20:47:37 +0000 | [diff] [blame] | 147 | self.last_lineno = None |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 148 | self._setupGraphDelegation() |
Jeremy Hylton | 53187f3 | 2000-02-08 19:01:29 +0000 | [diff] [blame] | 149 | |
Jeremy Hylton | 364f9b9 | 2001-04-12 06:40:42 +0000 | [diff] [blame] | 150 | def initClass(self): |
| 151 | """This method is called once for each class""" |
| 152 | |
| 153 | def checkClass(self): |
| 154 | """Verify that class is constructed correctly""" |
| 155 | try: |
| 156 | assert hasattr(self, 'graph') |
| 157 | assert getattr(self, 'NameFinder') |
| 158 | assert getattr(self, 'FunctionGen') |
| 159 | assert getattr(self, 'ClassGen') |
| 160 | except AssertionError, msg: |
| 161 | intro = "Bad class construction for %s" % self.__class__.__name__ |
| 162 | raise AssertionError, intro |
| 163 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 164 | def _setupGraphDelegation(self): |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 165 | self.emit = self.graph.emit |
| 166 | self.newBlock = self.graph.newBlock |
| 167 | self.startBlock = self.graph.startBlock |
| 168 | self.nextBlock = self.graph.nextBlock |
| 169 | self.setDocstring = self.graph.setDocstring |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 170 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 171 | def getCode(self): |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 172 | """Return a code object""" |
| 173 | return self.graph.getCode() |
Jeremy Hylton | 76d01b8 | 2000-02-11 20:27:07 +0000 | [diff] [blame] | 174 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 175 | # Next five methods handle name access |
Jeremy Hylton | 53187f3 | 2000-02-08 19:01:29 +0000 | [diff] [blame] | 176 | |
Jeremy Hylton | 4024560 | 2000-02-08 21:15:48 +0000 | [diff] [blame] | 177 | def isLocalName(self, name): |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 178 | return self.locals.top().has_elt(name) |
Jeremy Hylton | 4024560 | 2000-02-08 21:15:48 +0000 | [diff] [blame] | 179 | |
Jeremy Hylton | 3e0910c | 2000-02-10 17:20:39 +0000 | [diff] [blame] | 180 | def storeName(self, name): |
| 181 | self._nameOp('STORE', name) |
| 182 | |
| 183 | def loadName(self, name): |
| 184 | self._nameOp('LOAD', name) |
| 185 | |
| 186 | def delName(self, name): |
| 187 | self._nameOp('DELETE', name) |
| 188 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 189 | def _nameOp(self, prefix, name): |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 190 | if not self.optimized: |
| 191 | self.emit(prefix + '_NAME', name) |
| 192 | return |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 193 | if self.isLocalName(name): |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 194 | self.emit(prefix + '_FAST', name) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 195 | else: |
| 196 | self.emit(prefix + '_GLOBAL', name) |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 197 | |
Jeremy Hylton | 13d7094 | 2001-04-12 21:04:43 +0000 | [diff] [blame] | 198 | def _implicitNameOp(self, prefix, name): |
| 199 | """Emit name ops for names generated implicitly by for loops |
| 200 | |
| 201 | The interpreter generates names that start with a period or |
| 202 | dollar sign. The symbol table ignores these names because |
| 203 | they aren't present in the program text. |
| 204 | """ |
| 205 | if self.optimized: |
| 206 | self.emit(prefix + '_FAST', name) |
| 207 | else: |
| 208 | self.emit(prefix + '_NAME', name) |
| 209 | |
Jeremy Hylton | 542b11a | 2001-04-12 20:21:39 +0000 | [diff] [blame] | 210 | def set_lineno(self, node, force=0): |
Jeremy Hylton | 92f3972 | 2000-09-01 20:47:37 +0000 | [diff] [blame] | 211 | """Emit SET_LINENO if node has lineno attribute and it is |
| 212 | different than the last lineno emitted. |
Jeremy Hylton | 7daf04d | 2000-08-04 16:56:51 +0000 | [diff] [blame] | 213 | |
| 214 | Returns true if SET_LINENO was emitted. |
| 215 | |
| 216 | There are no rules for when an AST node should have a lineno |
| 217 | attribute. The transformer and AST code need to be reviewed |
| 218 | and a consistent policy implemented and documented. Until |
| 219 | then, this method works around missing line numbers. |
| 220 | """ |
| 221 | lineno = getattr(node, 'lineno', None) |
Jeremy Hylton | 542b11a | 2001-04-12 20:21:39 +0000 | [diff] [blame] | 222 | if lineno is not None and (lineno != self.last_lineno |
| 223 | or force): |
Jeremy Hylton | 7daf04d | 2000-08-04 16:56:51 +0000 | [diff] [blame] | 224 | self.emit('SET_LINENO', lineno) |
Jeremy Hylton | 92f3972 | 2000-09-01 20:47:37 +0000 | [diff] [blame] | 225 | self.last_lineno = lineno |
Jeremy Hylton | 7daf04d | 2000-08-04 16:56:51 +0000 | [diff] [blame] | 226 | return 1 |
| 227 | return 0 |
| 228 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 229 | # The first few visitor methods handle nodes that generator new |
Jeremy Hylton | 364f9b9 | 2001-04-12 06:40:42 +0000 | [diff] [blame] | 230 | # code objects. They use class attributes to determine what |
| 231 | # specialized code generators to use. |
| 232 | |
| 233 | NameFinder = LocalNameFinder |
| 234 | FunctionGen = None |
| 235 | ClassGen = None |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 236 | |
| 237 | def visitModule(self, node): |
Jeremy Hylton | 13d7094 | 2001-04-12 21:04:43 +0000 | [diff] [blame] | 238 | self.emit('SET_LINENO', 0) |
Jeremy Hylton | 9ab019b | 2001-04-11 16:24:30 +0000 | [diff] [blame] | 239 | if node.doc: |
Jeremy Hylton | 2afff32 | 2001-08-27 21:51:52 +0000 | [diff] [blame^] | 240 | self.emit('LOAD_CONST', node.doc) |
| 241 | self.storeName('__doc__') |
| 242 | lnf = walk(node.node, self.NameFinder(), verbose=0) |
| 243 | self.locals.push(lnf.getLocals()) |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 244 | self.visit(node.node) |
| 245 | self.emit('LOAD_CONST', None) |
| 246 | self.emit('RETURN_VALUE') |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 247 | |
| 248 | def visitFunction(self, node): |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 249 | self._visitFuncOrLambda(node, isLambda=0) |
Jeremy Hylton | 9ab019b | 2001-04-11 16:24:30 +0000 | [diff] [blame] | 250 | if node.doc: |
| 251 | self.setDocstring(node.doc) |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 252 | self.storeName(node.name) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 253 | |
| 254 | def visitLambda(self, node): |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 255 | self._visitFuncOrLambda(node, isLambda=1) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 256 | |
Jeremy Hylton | 364f9b9 | 2001-04-12 06:40:42 +0000 | [diff] [blame] | 257 | def _visitFuncOrLambda(self, node, isLambda=0): |
| 258 | gen = self.FunctionGen(node, self.filename, self.scopes, isLambda) |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 259 | walk(node.code, gen) |
| 260 | gen.finish() |
Jeremy Hylton | 7daf04d | 2000-08-04 16:56:51 +0000 | [diff] [blame] | 261 | self.set_lineno(node) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 262 | for default in node.defaults: |
| 263 | self.visit(default) |
Jeremy Hylton | 314e3fb | 2000-11-06 03:43:11 +0000 | [diff] [blame] | 264 | self.emit('LOAD_CONST', gen) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 265 | self.emit('MAKE_FUNCTION', len(node.defaults)) |
| 266 | |
| 267 | def visitClass(self, node): |
Jeremy Hylton | 364f9b9 | 2001-04-12 06:40:42 +0000 | [diff] [blame] | 268 | gen = self.ClassGen(node, self.filename, self.scopes) |
Jeremy Hylton | 9ab019b | 2001-04-11 16:24:30 +0000 | [diff] [blame] | 269 | if node.doc: |
Jeremy Hylton | 2afff32 | 2001-08-27 21:51:52 +0000 | [diff] [blame^] | 270 | self.emit('LOAD_CONST', node.doc) |
| 271 | self.storeName('__doc__') |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 272 | walk(node.code, gen) |
| 273 | gen.finish() |
Jeremy Hylton | 7daf04d | 2000-08-04 16:56:51 +0000 | [diff] [blame] | 274 | self.set_lineno(node) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 275 | self.emit('LOAD_CONST', node.name) |
| 276 | for base in node.bases: |
| 277 | self.visit(base) |
| 278 | self.emit('BUILD_TUPLE', len(node.bases)) |
Jeremy Hylton | 364f9b9 | 2001-04-12 06:40:42 +0000 | [diff] [blame] | 279 | self.emit('LOAD_CONST', gen) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 280 | self.emit('MAKE_FUNCTION', 0) |
| 281 | self.emit('CALL_FUNCTION', 0) |
| 282 | self.emit('BUILD_CLASS') |
| 283 | self.storeName(node.name) |
| 284 | |
| 285 | # The rest are standard visitor methods |
| 286 | |
| 287 | # The next few implement control-flow statements |
| 288 | |
| 289 | def visitIf(self, node): |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 290 | end = self.newBlock() |
| 291 | numtests = len(node.tests) |
| 292 | for i in range(numtests): |
| 293 | test, suite = node.tests[i] |
Jeremy Hylton | 2afff32 | 2001-08-27 21:51:52 +0000 | [diff] [blame^] | 294 | if is_constant_false(test): |
| 295 | # XXX will need to check generator stuff here |
| 296 | continue |
Jeremy Hylton | 7daf04d | 2000-08-04 16:56:51 +0000 | [diff] [blame] | 297 | self.set_lineno(test) |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 298 | self.visit(test) |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 299 | nextTest = self.newBlock() |
| 300 | self.emit('JUMP_IF_FALSE', nextTest) |
| 301 | self.nextBlock() |
| 302 | self.emit('POP_TOP') |
| 303 | self.visit(suite) |
| 304 | self.emit('JUMP_FORWARD', end) |
Jeremy Hylton | 314e3fb | 2000-11-06 03:43:11 +0000 | [diff] [blame] | 305 | self.startBlock(nextTest) |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 306 | self.emit('POP_TOP') |
| 307 | if node.else_: |
| 308 | self.visit(node.else_) |
| 309 | self.nextBlock(end) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 310 | |
| 311 | def visitWhile(self, node): |
Jeremy Hylton | 7daf04d | 2000-08-04 16:56:51 +0000 | [diff] [blame] | 312 | self.set_lineno(node) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 313 | |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 314 | loop = self.newBlock() |
| 315 | else_ = self.newBlock() |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 316 | |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 317 | after = self.newBlock() |
| 318 | self.emit('SETUP_LOOP', after) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 319 | |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 320 | self.nextBlock(loop) |
| 321 | self.loops.push(loop) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 322 | |
Jeremy Hylton | bb0bae6 | 2001-04-12 21:54:41 +0000 | [diff] [blame] | 323 | self.set_lineno(node, force=1) |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 324 | self.visit(node.test) |
| 325 | self.emit('JUMP_IF_FALSE', else_ or after) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 326 | |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 327 | self.nextBlock() |
| 328 | self.emit('POP_TOP') |
| 329 | self.visit(node.body) |
| 330 | self.emit('JUMP_ABSOLUTE', loop) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 331 | |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 332 | self.startBlock(else_) # or just the POPs if not else clause |
| 333 | self.emit('POP_TOP') |
| 334 | self.emit('POP_BLOCK') |
Jeremy Hylton | bb0bae6 | 2001-04-12 21:54:41 +0000 | [diff] [blame] | 335 | self.loops.pop() |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 336 | if node.else_: |
| 337 | self.visit(node.else_) |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 338 | self.nextBlock(after) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 339 | |
| 340 | def visitFor(self, node): |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 341 | start = self.newBlock() |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 342 | anchor = self.newBlock() |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 343 | after = self.newBlock() |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 344 | self.loops.push(start) |
| 345 | |
Jeremy Hylton | 7daf04d | 2000-08-04 16:56:51 +0000 | [diff] [blame] | 346 | self.set_lineno(node) |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 347 | self.emit('SETUP_LOOP', after) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 348 | self.visit(node.list) |
| 349 | self.visit(ast.Const(0)) |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 350 | self.nextBlock(start) |
Jeremy Hylton | bb0bae6 | 2001-04-12 21:54:41 +0000 | [diff] [blame] | 351 | self.set_lineno(node, force=1) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 352 | self.emit('FOR_LOOP', anchor) |
Jeremy Hylton | 314e3fb | 2000-11-06 03:43:11 +0000 | [diff] [blame] | 353 | self.nextBlock() |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 354 | self.visit(node.assign) |
| 355 | self.visit(node.body) |
| 356 | self.emit('JUMP_ABSOLUTE', start) |
Jeremy Hylton | 314e3fb | 2000-11-06 03:43:11 +0000 | [diff] [blame] | 357 | self.startBlock(anchor) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 358 | self.emit('POP_BLOCK') |
Jeremy Hylton | bb0bae6 | 2001-04-12 21:54:41 +0000 | [diff] [blame] | 359 | self.loops.pop() |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 360 | if node.else_: |
| 361 | self.visit(node.else_) |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 362 | self.nextBlock(after) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 363 | |
| 364 | def visitBreak(self, node): |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 365 | if not self.loops: |
| 366 | raise SyntaxError, "'break' outside loop (%s, %d)" % \ |
| 367 | (self.filename, node.lineno) |
Jeremy Hylton | 7daf04d | 2000-08-04 16:56:51 +0000 | [diff] [blame] | 368 | self.set_lineno(node) |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 369 | self.emit('BREAK_LOOP') |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 370 | |
| 371 | def visitContinue(self, node): |
| 372 | if not self.loops: |
| 373 | raise SyntaxError, "'continue' outside loop (%s, %d)" % \ |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 374 | (self.filename, node.lineno) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 375 | l = self.loops.top() |
Jeremy Hylton | 7daf04d | 2000-08-04 16:56:51 +0000 | [diff] [blame] | 376 | self.set_lineno(node) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 377 | self.emit('JUMP_ABSOLUTE', l) |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 378 | self.nextBlock() |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 379 | |
| 380 | def visitTest(self, node, jump): |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 381 | end = self.newBlock() |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 382 | for child in node.nodes[:-1]: |
| 383 | self.visit(child) |
| 384 | self.emit(jump, end) |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 385 | self.nextBlock() |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 386 | self.emit('POP_TOP') |
| 387 | self.visit(node.nodes[-1]) |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 388 | self.nextBlock(end) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 389 | |
| 390 | def visitAnd(self, node): |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 391 | self.visitTest(node, 'JUMP_IF_FALSE') |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 392 | |
| 393 | def visitOr(self, node): |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 394 | self.visitTest(node, 'JUMP_IF_TRUE') |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 395 | |
| 396 | def visitCompare(self, node): |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 397 | self.visit(node.expr) |
| 398 | cleanup = self.newBlock() |
| 399 | for op, code in node.ops[:-1]: |
| 400 | self.visit(code) |
| 401 | self.emit('DUP_TOP') |
| 402 | self.emit('ROT_THREE') |
| 403 | self.emit('COMPARE_OP', op) |
| 404 | self.emit('JUMP_IF_FALSE', cleanup) |
| 405 | self.nextBlock() |
| 406 | self.emit('POP_TOP') |
| 407 | # now do the last comparison |
| 408 | if node.ops: |
| 409 | op, code = node.ops[-1] |
| 410 | self.visit(code) |
| 411 | self.emit('COMPARE_OP', op) |
| 412 | if len(node.ops) > 1: |
| 413 | end = self.newBlock() |
| 414 | self.emit('JUMP_FORWARD', end) |
Jeremy Hylton | 314e3fb | 2000-11-06 03:43:11 +0000 | [diff] [blame] | 415 | self.startBlock(cleanup) |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 416 | self.emit('ROT_TWO') |
| 417 | self.emit('POP_TOP') |
| 418 | self.nextBlock(end) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 419 | |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 420 | # list comprehensions |
| 421 | __list_count = 0 |
| 422 | |
| 423 | def visitListComp(self, node): |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 424 | self.set_lineno(node) |
| 425 | # setup list |
| 426 | append = "$append%d" % self.__list_count |
| 427 | self.__list_count = self.__list_count + 1 |
| 428 | self.emit('BUILD_LIST', 0) |
| 429 | self.emit('DUP_TOP') |
| 430 | self.emit('LOAD_ATTR', 'append') |
Jeremy Hylton | 13d7094 | 2001-04-12 21:04:43 +0000 | [diff] [blame] | 431 | self._implicitNameOp('STORE', append) |
Jeremy Hylton | 542b11a | 2001-04-12 20:21:39 +0000 | [diff] [blame] | 432 | |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 433 | stack = [] |
Jeremy Hylton | 542b11a | 2001-04-12 20:21:39 +0000 | [diff] [blame] | 434 | for i, for_ in zip(range(len(node.quals)), node.quals): |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 435 | start, anchor = self.visit(for_) |
| 436 | cont = None |
| 437 | for if_ in for_.ifs: |
| 438 | if cont is None: |
| 439 | cont = self.newBlock() |
| 440 | self.visit(if_, cont) |
| 441 | stack.insert(0, (start, cont, anchor)) |
Jeremy Hylton | 542b11a | 2001-04-12 20:21:39 +0000 | [diff] [blame] | 442 | |
Jeremy Hylton | 13d7094 | 2001-04-12 21:04:43 +0000 | [diff] [blame] | 443 | self._implicitNameOp('LOAD', append) |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 444 | self.visit(node.expr) |
| 445 | self.emit('CALL_FUNCTION', 1) |
| 446 | self.emit('POP_TOP') |
| 447 | |
| 448 | for start, cont, anchor in stack: |
| 449 | if cont: |
| 450 | skip_one = self.newBlock() |
| 451 | self.emit('JUMP_FORWARD', skip_one) |
Jeremy Hylton | 314e3fb | 2000-11-06 03:43:11 +0000 | [diff] [blame] | 452 | self.startBlock(cont) |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 453 | self.emit('POP_TOP') |
| 454 | self.nextBlock(skip_one) |
| 455 | self.emit('JUMP_ABSOLUTE', start) |
Jeremy Hylton | 314e3fb | 2000-11-06 03:43:11 +0000 | [diff] [blame] | 456 | self.startBlock(anchor) |
Jeremy Hylton | 13d7094 | 2001-04-12 21:04:43 +0000 | [diff] [blame] | 457 | self._implicitNameOp('DELETE', append) |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 458 | |
| 459 | self.__list_count = self.__list_count - 1 |
| 460 | |
| 461 | def visitListCompFor(self, node): |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 462 | start = self.newBlock() |
| 463 | anchor = self.newBlock() |
| 464 | |
| 465 | self.visit(node.list) |
| 466 | self.visit(ast.Const(0)) |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 467 | self.nextBlock(start) |
Jeremy Hylton | 13d7094 | 2001-04-12 21:04:43 +0000 | [diff] [blame] | 468 | self.emit('SET_LINENO', node.lineno) |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 469 | self.emit('FOR_LOOP', anchor) |
Jeremy Hylton | 314e3fb | 2000-11-06 03:43:11 +0000 | [diff] [blame] | 470 | self.nextBlock() |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 471 | self.visit(node.assign) |
| 472 | return start, anchor |
| 473 | |
| 474 | def visitListCompIf(self, node, branch): |
Jeremy Hylton | 542b11a | 2001-04-12 20:21:39 +0000 | [diff] [blame] | 475 | self.set_lineno(node, force=1) |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 476 | self.visit(node.test) |
| 477 | self.emit('JUMP_IF_FALSE', branch) |
| 478 | self.newBlock() |
| 479 | self.emit('POP_TOP') |
| 480 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 481 | # exception related |
| 482 | |
| 483 | def visitAssert(self, node): |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 484 | # XXX would be interesting to implement this via a |
| 485 | # transformation of the AST before this stage |
| 486 | end = self.newBlock() |
Jeremy Hylton | 7daf04d | 2000-08-04 16:56:51 +0000 | [diff] [blame] | 487 | self.set_lineno(node) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 488 | # XXX __debug__ and AssertionError appear to be special cases |
| 489 | # -- they are always loaded as globals even if there are local |
| 490 | # names. I guess this is a sort of renaming op. |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 491 | self.emit('LOAD_GLOBAL', '__debug__') |
| 492 | self.emit('JUMP_IF_FALSE', end) |
| 493 | self.nextBlock() |
| 494 | self.emit('POP_TOP') |
| 495 | self.visit(node.test) |
| 496 | self.emit('JUMP_IF_TRUE', end) |
| 497 | self.nextBlock() |
Jeremy Hylton | 314e3fb | 2000-11-06 03:43:11 +0000 | [diff] [blame] | 498 | self.emit('POP_TOP') |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 499 | self.emit('LOAD_GLOBAL', 'AssertionError') |
Jeremy Hylton | 314e3fb | 2000-11-06 03:43:11 +0000 | [diff] [blame] | 500 | if node.fail: |
| 501 | self.visit(node.fail) |
| 502 | self.emit('RAISE_VARARGS', 2) |
| 503 | else: |
| 504 | self.emit('RAISE_VARARGS', 1) |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 505 | self.nextBlock(end) |
| 506 | self.emit('POP_TOP') |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 507 | |
| 508 | def visitRaise(self, node): |
Jeremy Hylton | 7daf04d | 2000-08-04 16:56:51 +0000 | [diff] [blame] | 509 | self.set_lineno(node) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 510 | n = 0 |
| 511 | if node.expr1: |
| 512 | self.visit(node.expr1) |
| 513 | n = n + 1 |
| 514 | if node.expr2: |
| 515 | self.visit(node.expr2) |
| 516 | n = n + 1 |
| 517 | if node.expr3: |
| 518 | self.visit(node.expr3) |
| 519 | n = n + 1 |
| 520 | self.emit('RAISE_VARARGS', n) |
| 521 | |
| 522 | def visitTryExcept(self, node): |
| 523 | handlers = self.newBlock() |
| 524 | end = self.newBlock() |
| 525 | if node.else_: |
| 526 | lElse = self.newBlock() |
| 527 | else: |
| 528 | lElse = end |
Jeremy Hylton | 7daf04d | 2000-08-04 16:56:51 +0000 | [diff] [blame] | 529 | self.set_lineno(node) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 530 | self.emit('SETUP_EXCEPT', handlers) |
Jeremy Hylton | 314e3fb | 2000-11-06 03:43:11 +0000 | [diff] [blame] | 531 | self.nextBlock() |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 532 | self.visit(node.body) |
| 533 | self.emit('POP_BLOCK') |
| 534 | self.emit('JUMP_FORWARD', lElse) |
Jeremy Hylton | 314e3fb | 2000-11-06 03:43:11 +0000 | [diff] [blame] | 535 | self.startBlock(handlers) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 536 | |
| 537 | last = len(node.handlers) - 1 |
| 538 | for i in range(len(node.handlers)): |
| 539 | expr, target, body = node.handlers[i] |
Jeremy Hylton | 7daf04d | 2000-08-04 16:56:51 +0000 | [diff] [blame] | 540 | self.set_lineno(expr) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 541 | if expr: |
| 542 | self.emit('DUP_TOP') |
| 543 | self.visit(expr) |
| 544 | self.emit('COMPARE_OP', 'exception match') |
| 545 | next = self.newBlock() |
| 546 | self.emit('JUMP_IF_FALSE', next) |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 547 | self.nextBlock() |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 548 | self.emit('POP_TOP') |
| 549 | self.emit('POP_TOP') |
| 550 | if target: |
| 551 | self.visit(target) |
| 552 | else: |
| 553 | self.emit('POP_TOP') |
| 554 | self.emit('POP_TOP') |
| 555 | self.visit(body) |
| 556 | self.emit('JUMP_FORWARD', end) |
| 557 | if expr: |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 558 | self.nextBlock(next) |
Jeremy Hylton | 314e3fb | 2000-11-06 03:43:11 +0000 | [diff] [blame] | 559 | else: |
| 560 | self.nextBlock() |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 561 | self.emit('POP_TOP') |
| 562 | self.emit('END_FINALLY') |
| 563 | if node.else_: |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 564 | self.nextBlock(lElse) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 565 | self.visit(node.else_) |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 566 | self.nextBlock(end) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 567 | |
| 568 | def visitTryFinally(self, node): |
| 569 | final = self.newBlock() |
Jeremy Hylton | 7daf04d | 2000-08-04 16:56:51 +0000 | [diff] [blame] | 570 | self.set_lineno(node) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 571 | self.emit('SETUP_FINALLY', final) |
Jeremy Hylton | 314e3fb | 2000-11-06 03:43:11 +0000 | [diff] [blame] | 572 | self.nextBlock() |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 573 | self.visit(node.body) |
| 574 | self.emit('POP_BLOCK') |
| 575 | self.emit('LOAD_CONST', None) |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 576 | self.nextBlock(final) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 577 | self.visit(node.final) |
| 578 | self.emit('END_FINALLY') |
| 579 | |
| 580 | # misc |
| 581 | |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 582 | def visitDiscard(self, node): |
Jeremy Hylton | 01d1293 | 2001-04-11 16:36:25 +0000 | [diff] [blame] | 583 | self.set_lineno(node) |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 584 | self.visit(node.expr) |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 585 | self.emit('POP_TOP') |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 586 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 587 | def visitConst(self, node): |
| 588 | self.emit('LOAD_CONST', node.value) |
| 589 | |
| 590 | def visitKeyword(self, node): |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 591 | self.emit('LOAD_CONST', node.name) |
| 592 | self.visit(node.expr) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 593 | |
| 594 | def visitGlobal(self, node): |
| 595 | # no code to generate |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 596 | pass |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 597 | |
| 598 | def visitName(self, node): |
Jeremy Hylton | 92f3972 | 2000-09-01 20:47:37 +0000 | [diff] [blame] | 599 | self.set_lineno(node) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 600 | self.loadName(node.name) |
| 601 | |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 602 | def visitPass(self, node): |
Jeremy Hylton | 7daf04d | 2000-08-04 16:56:51 +0000 | [diff] [blame] | 603 | self.set_lineno(node) |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 604 | |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 605 | def visitImport(self, node): |
Jeremy Hylton | 7daf04d | 2000-08-04 16:56:51 +0000 | [diff] [blame] | 606 | self.set_lineno(node) |
Jeremy Hylton | 2051608 | 2000-09-01 20:33:26 +0000 | [diff] [blame] | 607 | for name, alias in node.names: |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 608 | if VERSION > 1: |
| 609 | self.emit('LOAD_CONST', None) |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 610 | self.emit('IMPORT_NAME', name) |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 611 | mod = string.split(name, ".")[0] |
| 612 | self.storeName(alias or mod) |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 613 | |
| 614 | def visitFrom(self, node): |
Jeremy Hylton | 7daf04d | 2000-08-04 16:56:51 +0000 | [diff] [blame] | 615 | self.set_lineno(node) |
Jeremy Hylton | 2051608 | 2000-09-01 20:33:26 +0000 | [diff] [blame] | 616 | fromlist = map(lambda (name, alias): name, node.names) |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 617 | if VERSION > 1: |
| 618 | self.emit('LOAD_CONST', tuple(fromlist)) |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 619 | self.emit('IMPORT_NAME', node.modname) |
Jeremy Hylton | 2051608 | 2000-09-01 20:33:26 +0000 | [diff] [blame] | 620 | for name, alias in node.names: |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 621 | if VERSION > 1: |
| 622 | if name == '*': |
| 623 | self.namespace = 0 |
| 624 | self.emit('IMPORT_STAR') |
| 625 | # There can only be one name w/ from ... import * |
| 626 | assert len(node.names) == 1 |
| 627 | return |
| 628 | else: |
| 629 | self.emit('IMPORT_FROM', name) |
| 630 | self._resolveDots(name) |
| 631 | self.storeName(alias or name) |
Jeremy Hylton | 4e1be72 | 2000-10-12 20:23:23 +0000 | [diff] [blame] | 632 | else: |
| 633 | self.emit('IMPORT_FROM', name) |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 634 | self.emit('POP_TOP') |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 635 | |
Jeremy Hylton | 2051608 | 2000-09-01 20:33:26 +0000 | [diff] [blame] | 636 | def _resolveDots(self, name): |
| 637 | elts = string.split(name, ".") |
| 638 | if len(elts) == 1: |
| 639 | return |
| 640 | for elt in elts[1:]: |
| 641 | self.emit('LOAD_ATTR', elt) |
| 642 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 643 | def visitGetattr(self, node): |
| 644 | self.visit(node.expr) |
| 645 | self.emit('LOAD_ATTR', node.attrname) |
| 646 | |
| 647 | # next five implement assignments |
| 648 | |
| 649 | def visitAssign(self, node): |
Jeremy Hylton | 7daf04d | 2000-08-04 16:56:51 +0000 | [diff] [blame] | 650 | self.set_lineno(node) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 651 | self.visit(node.expr) |
| 652 | dups = len(node.nodes) - 1 |
| 653 | for i in range(len(node.nodes)): |
| 654 | elt = node.nodes[i] |
| 655 | if i < dups: |
| 656 | self.emit('DUP_TOP') |
| 657 | if isinstance(elt, ast.Node): |
| 658 | self.visit(elt) |
Jeremy Hylton | 3050d51 | 2000-02-12 00:12:38 +0000 | [diff] [blame] | 659 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 660 | def visitAssName(self, node): |
| 661 | if node.flags == 'OP_ASSIGN': |
| 662 | self.storeName(node.name) |
| 663 | elif node.flags == 'OP_DELETE': |
| 664 | self.delName(node.name) |
| 665 | else: |
| 666 | print "oops", node.flags |
Jeremy Hylton | 76d01b8 | 2000-02-11 20:27:07 +0000 | [diff] [blame] | 667 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 668 | def visitAssAttr(self, node): |
| 669 | self.visit(node.expr) |
| 670 | if node.flags == 'OP_ASSIGN': |
| 671 | self.emit('STORE_ATTR', node.attrname) |
| 672 | elif node.flags == 'OP_DELETE': |
| 673 | self.emit('DELETE_ATTR', node.attrname) |
| 674 | else: |
| 675 | print "warning: unexpected flags:", node.flags |
| 676 | print node |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 677 | |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 678 | def _visitAssSequence(self, node, op='UNPACK_SEQUENCE'): |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 679 | if findOp(node) != 'OP_DELETE': |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 680 | self.emit(op, len(node.nodes)) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 681 | for child in node.nodes: |
| 682 | self.visit(child) |
| 683 | |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 684 | if VERSION > 1: |
| 685 | visitAssTuple = _visitAssSequence |
| 686 | visitAssList = _visitAssSequence |
| 687 | else: |
| 688 | def visitAssTuple(self, node): |
| 689 | self._visitAssSequence(node, 'UNPACK_TUPLE') |
| 690 | |
| 691 | def visitAssList(self, node): |
| 692 | self._visitAssSequence(node, 'UNPACK_LIST') |
| 693 | |
| 694 | # augmented assignment |
| 695 | |
| 696 | def visitAugAssign(self, node): |
| 697 | aug_node = wrap_aug(node.node) |
| 698 | self.visit(aug_node, "load") |
| 699 | self.visit(node.expr) |
| 700 | self.emit(self._augmented_opcode[node.op]) |
| 701 | self.visit(aug_node, "store") |
| 702 | |
| 703 | _augmented_opcode = { |
| 704 | '+=' : 'INPLACE_ADD', |
| 705 | '-=' : 'INPLACE_SUBTRACT', |
| 706 | '*=' : 'INPLACE_MULTIPLY', |
| 707 | '/=' : 'INPLACE_DIVIDE', |
| 708 | '%=' : 'INPLACE_MODULO', |
| 709 | '**=': 'INPLACE_POWER', |
| 710 | '>>=': 'INPLACE_RSHIFT', |
| 711 | '<<=': 'INPLACE_LSHIFT', |
| 712 | '&=' : 'INPLACE_AND', |
| 713 | '^=' : 'INPLACE_XOR', |
| 714 | '|=' : 'INPLACE_OR', |
| 715 | } |
| 716 | |
| 717 | def visitAugName(self, node, mode): |
| 718 | if mode == "load": |
| 719 | self.loadName(node.name) |
| 720 | elif mode == "store": |
| 721 | self.storeName(node.name) |
| 722 | |
| 723 | def visitAugGetattr(self, node, mode): |
| 724 | if mode == "load": |
| 725 | self.visit(node.expr) |
| 726 | self.emit('DUP_TOP') |
| 727 | self.emit('LOAD_ATTR', node.attrname) |
| 728 | elif mode == "store": |
| 729 | self.emit('ROT_TWO') |
| 730 | self.emit('STORE_ATTR', node.attrname) |
| 731 | |
| 732 | def visitAugSlice(self, node, mode): |
| 733 | if mode == "load": |
Jeremy Hylton | 84ec1f9 | 2001-04-11 16:43:13 +0000 | [diff] [blame] | 734 | self.visitSlice(node, 1) |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 735 | elif mode == "store": |
| 736 | slice = 0 |
| 737 | if node.lower: |
| 738 | slice = slice | 1 |
| 739 | if node.upper: |
| 740 | slice = slice | 2 |
| 741 | if slice == 0: |
| 742 | self.emit('ROT_TWO') |
| 743 | elif slice == 3: |
| 744 | self.emit('ROT_FOUR') |
| 745 | else: |
| 746 | self.emit('ROT_THREE') |
| 747 | self.emit('STORE_SLICE+%d' % slice) |
| 748 | |
| 749 | def visitAugSubscript(self, node, mode): |
| 750 | if len(node.subs) > 1: |
| 751 | raise SyntaxError, "augmented assignment to tuple is not possible" |
| 752 | if mode == "load": |
| 753 | self.visitSubscript(node, 1) |
| 754 | elif mode == "store": |
| 755 | self.emit('ROT_THREE') |
| 756 | self.emit('STORE_SUBSCR') |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 757 | |
| 758 | def visitExec(self, node): |
| 759 | self.visit(node.expr) |
| 760 | if node.locals is None: |
| 761 | self.emit('LOAD_CONST', None) |
| 762 | else: |
| 763 | self.visit(node.locals) |
| 764 | if node.globals is None: |
| 765 | self.emit('DUP_TOP') |
| 766 | else: |
| 767 | self.visit(node.globals) |
| 768 | self.emit('EXEC_STMT') |
Jeremy Hylton | 76d01b8 | 2000-02-11 20:27:07 +0000 | [diff] [blame] | 769 | |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 770 | def visitCallFunc(self, node): |
Jeremy Hylton | 3050d51 | 2000-02-12 00:12:38 +0000 | [diff] [blame] | 771 | pos = 0 |
| 772 | kw = 0 |
Jeremy Hylton | 7daf04d | 2000-08-04 16:56:51 +0000 | [diff] [blame] | 773 | self.set_lineno(node) |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 774 | self.visit(node.node) |
| 775 | for arg in node.args: |
| 776 | self.visit(arg) |
Jeremy Hylton | 3050d51 | 2000-02-12 00:12:38 +0000 | [diff] [blame] | 777 | if isinstance(arg, ast.Keyword): |
| 778 | kw = kw + 1 |
| 779 | else: |
| 780 | pos = pos + 1 |
Jeremy Hylton | be317e6 | 2000-05-02 22:32:59 +0000 | [diff] [blame] | 781 | if node.star_args is not None: |
| 782 | self.visit(node.star_args) |
| 783 | if node.dstar_args is not None: |
| 784 | self.visit(node.dstar_args) |
| 785 | have_star = node.star_args is not None |
| 786 | have_dstar = node.dstar_args is not None |
| 787 | opcode = callfunc_opcode_info[have_star, have_dstar] |
| 788 | self.emit(opcode, kw << 8 | pos) |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 789 | |
Jeremy Hylton | 2afff32 | 2001-08-27 21:51:52 +0000 | [diff] [blame^] | 790 | def visitPrint(self, node, newline=0): |
Jeremy Hylton | 7daf04d | 2000-08-04 16:56:51 +0000 | [diff] [blame] | 791 | self.set_lineno(node) |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 792 | if node.dest: |
| 793 | self.visit(node.dest) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 794 | for child in node.nodes: |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 795 | if node.dest: |
| 796 | self.emit('DUP_TOP') |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 797 | self.visit(child) |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 798 | if node.dest: |
| 799 | self.emit('ROT_TWO') |
| 800 | self.emit('PRINT_ITEM_TO') |
| 801 | else: |
| 802 | self.emit('PRINT_ITEM') |
Jeremy Hylton | 2afff32 | 2001-08-27 21:51:52 +0000 | [diff] [blame^] | 803 | if node.dest and not newline: |
| 804 | self.emit('POP_TOP') |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 805 | |
| 806 | def visitPrintnl(self, node): |
Jeremy Hylton | 2afff32 | 2001-08-27 21:51:52 +0000 | [diff] [blame^] | 807 | self.visitPrint(node, newline=1) |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 808 | if node.dest: |
| 809 | self.emit('PRINT_NEWLINE_TO') |
| 810 | else: |
| 811 | self.emit('PRINT_NEWLINE') |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 812 | |
| 813 | def visitReturn(self, node): |
Jeremy Hylton | 7daf04d | 2000-08-04 16:56:51 +0000 | [diff] [blame] | 814 | self.set_lineno(node) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 815 | self.visit(node.value) |
| 816 | self.emit('RETURN_VALUE') |
Jeremy Hylton | 4024560 | 2000-02-08 21:15:48 +0000 | [diff] [blame] | 817 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 818 | # slice and subscript stuff |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 819 | |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 820 | def visitSlice(self, node, aug_flag=None): |
| 821 | # aug_flag is used by visitAugSlice |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 822 | self.visit(node.expr) |
| 823 | slice = 0 |
| 824 | if node.lower: |
| 825 | self.visit(node.lower) |
| 826 | slice = slice | 1 |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 827 | if node.upper: |
| 828 | self.visit(node.upper) |
| 829 | slice = slice | 2 |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 830 | if aug_flag: |
| 831 | if slice == 0: |
| 832 | self.emit('DUP_TOP') |
| 833 | elif slice == 3: |
| 834 | self.emit('DUP_TOPX', 3) |
| 835 | else: |
| 836 | self.emit('DUP_TOPX', 2) |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 837 | if node.flags == 'OP_APPLY': |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 838 | self.emit('SLICE+%d' % slice) |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 839 | elif node.flags == 'OP_ASSIGN': |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 840 | self.emit('STORE_SLICE+%d' % slice) |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 841 | elif node.flags == 'OP_DELETE': |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 842 | self.emit('DELETE_SLICE+%d' % slice) |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 843 | else: |
Jeremy Hylton | 4f6bcd8 | 2000-02-15 23:45:26 +0000 | [diff] [blame] | 844 | print "weird slice", node.flags |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 845 | raise |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 846 | |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 847 | def visitSubscript(self, node, aug_flag=None): |
Jeremy Hylton | 4024560 | 2000-02-08 21:15:48 +0000 | [diff] [blame] | 848 | self.visit(node.expr) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 849 | for sub in node.subs: |
| 850 | self.visit(sub) |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 851 | if aug_flag: |
| 852 | self.emit('DUP_TOPX', 2) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 853 | if len(node.subs) > 1: |
| 854 | self.emit('BUILD_TUPLE', len(node.subs)) |
| 855 | if node.flags == 'OP_APPLY': |
| 856 | self.emit('BINARY_SUBSCR') |
| 857 | elif node.flags == 'OP_ASSIGN': |
| 858 | self.emit('STORE_SUBSCR') |
Jeremy Hylton | 3ec7e2c | 2000-02-17 22:09:35 +0000 | [diff] [blame] | 859 | elif node.flags == 'OP_DELETE': |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 860 | self.emit('DELETE_SUBSCR') |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 861 | |
Jeremy Hylton | 7fab23e | 2000-03-06 19:10:54 +0000 | [diff] [blame] | 862 | # binary ops |
| 863 | |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 864 | def binaryOp(self, node, op): |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 865 | self.visit(node.left) |
| 866 | self.visit(node.right) |
| 867 | self.emit(op) |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 868 | |
| 869 | def visitAdd(self, node): |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 870 | return self.binaryOp(node, 'BINARY_ADD') |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 871 | |
| 872 | def visitSub(self, node): |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 873 | return self.binaryOp(node, 'BINARY_SUBTRACT') |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 874 | |
| 875 | def visitMul(self, node): |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 876 | return self.binaryOp(node, 'BINARY_MULTIPLY') |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 877 | |
| 878 | def visitDiv(self, node): |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 879 | return self.binaryOp(node, 'BINARY_DIVIDE') |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 880 | |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 881 | def visitMod(self, node): |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 882 | return self.binaryOp(node, 'BINARY_MODULO') |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 883 | |
Jeremy Hylton | 126960b | 2000-02-14 21:33:10 +0000 | [diff] [blame] | 884 | def visitPower(self, node): |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 885 | return self.binaryOp(node, 'BINARY_POWER') |
Jeremy Hylton | 126960b | 2000-02-14 21:33:10 +0000 | [diff] [blame] | 886 | |
| 887 | def visitLeftShift(self, node): |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 888 | return self.binaryOp(node, 'BINARY_LSHIFT') |
Jeremy Hylton | 126960b | 2000-02-14 21:33:10 +0000 | [diff] [blame] | 889 | |
| 890 | def visitRightShift(self, node): |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 891 | return self.binaryOp(node, 'BINARY_RSHIFT') |
Jeremy Hylton | 126960b | 2000-02-14 21:33:10 +0000 | [diff] [blame] | 892 | |
Jeremy Hylton | 7fab23e | 2000-03-06 19:10:54 +0000 | [diff] [blame] | 893 | # unary ops |
| 894 | |
| 895 | def unaryOp(self, node, op): |
| 896 | self.visit(node.expr) |
| 897 | self.emit(op) |
Jeremy Hylton | 7fab23e | 2000-03-06 19:10:54 +0000 | [diff] [blame] | 898 | |
Jeremy Hylton | 126960b | 2000-02-14 21:33:10 +0000 | [diff] [blame] | 899 | def visitInvert(self, node): |
| 900 | return self.unaryOp(node, 'UNARY_INVERT') |
| 901 | |
Jeremy Hylton | 4024560 | 2000-02-08 21:15:48 +0000 | [diff] [blame] | 902 | def visitUnarySub(self, node): |
| 903 | return self.unaryOp(node, 'UNARY_NEGATIVE') |
| 904 | |
| 905 | def visitUnaryAdd(self, node): |
| 906 | return self.unaryOp(node, 'UNARY_POSITIVE') |
| 907 | |
| 908 | def visitUnaryInvert(self, node): |
| 909 | return self.unaryOp(node, 'UNARY_INVERT') |
| 910 | |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 911 | def visitNot(self, node): |
| 912 | return self.unaryOp(node, 'UNARY_NOT') |
| 913 | |
Jeremy Hylton | 4024560 | 2000-02-08 21:15:48 +0000 | [diff] [blame] | 914 | def visitBackquote(self, node): |
| 915 | return self.unaryOp(node, 'UNARY_CONVERT') |
| 916 | |
Jeremy Hylton | 7fab23e | 2000-03-06 19:10:54 +0000 | [diff] [blame] | 917 | # bit ops |
| 918 | |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 919 | def bitOp(self, nodes, op): |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 920 | self.visit(nodes[0]) |
| 921 | for node in nodes[1:]: |
| 922 | self.visit(node) |
| 923 | self.emit(op) |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 924 | |
| 925 | def visitBitand(self, node): |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 926 | return self.bitOp(node.nodes, 'BINARY_AND') |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 927 | |
| 928 | def visitBitor(self, node): |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 929 | return self.bitOp(node.nodes, 'BINARY_OR') |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 930 | |
| 931 | def visitBitxor(self, node): |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 932 | return self.bitOp(node.nodes, 'BINARY_XOR') |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 933 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 934 | # object constructors |
Jeremy Hylton | 4024560 | 2000-02-08 21:15:48 +0000 | [diff] [blame] | 935 | |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 936 | def visitEllipsis(self, node): |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 937 | self.emit('LOAD_CONST', Ellipsis) |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 938 | |
Jeremy Hylton | 4024560 | 2000-02-08 21:15:48 +0000 | [diff] [blame] | 939 | def visitTuple(self, node): |
| 940 | for elt in node.nodes: |
| 941 | self.visit(elt) |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 942 | self.emit('BUILD_TUPLE', len(node.nodes)) |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 943 | |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 944 | def visitList(self, node): |
| 945 | for elt in node.nodes: |
| 946 | self.visit(elt) |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 947 | self.emit('BUILD_LIST', len(node.nodes)) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 948 | |
| 949 | def visitSliceobj(self, node): |
| 950 | for child in node.nodes: |
| 951 | self.visit(child) |
| 952 | self.emit('BUILD_SLICE', len(node.nodes)) |
Jeremy Hylton | 5e0ce53 | 2000-02-10 00:47:08 +0000 | [diff] [blame] | 953 | |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 954 | def visitDict(self, node): |
Jeremy Hylton | 7daf04d | 2000-08-04 16:56:51 +0000 | [diff] [blame] | 955 | lineno = getattr(node, 'lineno', None) |
| 956 | if lineno: |
| 957 | set.emit('SET_LINENO', lineno) |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 958 | self.emit('BUILD_MAP', 0) |
| 959 | for k, v in node.items: |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 960 | lineno2 = getattr(node, 'lineno', None) |
Jeremy Hylton | 7daf04d | 2000-08-04 16:56:51 +0000 | [diff] [blame] | 961 | if lineno2 is not None and lineno != lineno2: |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 962 | self.emit('SET_LINENO', lineno2) |
| 963 | lineno = lineno2 |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 964 | self.emit('DUP_TOP') |
| 965 | self.visit(v) |
| 966 | self.emit('ROT_TWO') |
| 967 | self.visit(k) |
| 968 | self.emit('STORE_SUBSCR') |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 969 | |
Jeremy Hylton | 364f9b9 | 2001-04-12 06:40:42 +0000 | [diff] [blame] | 970 | class NestedScopeCodeGenerator(CodeGenerator): |
Jeremy Hylton | 80e29bd | 2001-04-09 04:28:48 +0000 | [diff] [blame] | 971 | __super_visitModule = CodeGenerator.visitModule |
Jeremy Hylton | 364f9b9 | 2001-04-12 06:40:42 +0000 | [diff] [blame] | 972 | __super_visitClass = CodeGenerator.visitClass |
| 973 | __super__visitFuncOrLambda = CodeGenerator._visitFuncOrLambda |
| 974 | |
| 975 | def parseSymbols(self, tree): |
| 976 | s = symbols.SymbolVisitor() |
| 977 | walk(tree, s) |
| 978 | return s.scopes |
Jeremy Hylton | 80e29bd | 2001-04-09 04:28:48 +0000 | [diff] [blame] | 979 | |
| 980 | def visitModule(self, node): |
Jeremy Hylton | 364f9b9 | 2001-04-12 06:40:42 +0000 | [diff] [blame] | 981 | self.scopes = self.parseSymbols(node) |
| 982 | self.scope = self.scopes[node] |
Jeremy Hylton | 80e29bd | 2001-04-09 04:28:48 +0000 | [diff] [blame] | 983 | self.__super_visitModule(node) |
| 984 | |
Jeremy Hylton | 364f9b9 | 2001-04-12 06:40:42 +0000 | [diff] [blame] | 985 | def _nameOp(self, prefix, name): |
| 986 | scope = self.scope.check_name(name) |
| 987 | if scope == SC_LOCAL: |
| 988 | if not self.optimized: |
| 989 | self.emit(prefix + '_NAME', name) |
| 990 | else: |
| 991 | self.emit(prefix + '_FAST', name) |
| 992 | elif scope == SC_GLOBAL: |
| 993 | self.emit(prefix + '_GLOBAL', name) |
| 994 | elif scope == SC_FREE or scope == SC_CELL: |
| 995 | self.emit(prefix + '_DEREF', name) |
| 996 | else: |
| 997 | raise RuntimeError, "unsupported scope for var %s: %d" % \ |
| 998 | (name, scope) |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 999 | |
Jeremy Hylton | 364f9b9 | 2001-04-12 06:40:42 +0000 | [diff] [blame] | 1000 | def _visitFuncOrLambda(self, node, isLambda=0): |
| 1001 | gen = self.FunctionGen(node, self.filename, self.scopes, isLambda) |
| 1002 | walk(node.code, gen) |
| 1003 | gen.finish() |
| 1004 | self.set_lineno(node) |
| 1005 | for default in node.defaults: |
| 1006 | self.visit(default) |
| 1007 | frees = gen.scope.get_free_vars() |
| 1008 | if frees: |
| 1009 | for name in frees: |
| 1010 | self.emit('LOAD_CLOSURE', name) |
| 1011 | self.emit('LOAD_CONST', gen) |
| 1012 | self.emit('MAKE_CLOSURE', len(node.defaults)) |
| 1013 | else: |
| 1014 | self.emit('LOAD_CONST', gen) |
| 1015 | self.emit('MAKE_FUNCTION', len(node.defaults)) |
Jeremy Hylton | 84ec1f9 | 2001-04-11 16:43:13 +0000 | [diff] [blame] | 1016 | |
Jeremy Hylton | 364f9b9 | 2001-04-12 06:40:42 +0000 | [diff] [blame] | 1017 | def visitClass(self, node): |
| 1018 | gen = self.ClassGen(node, self.filename, self.scopes) |
| 1019 | if node.doc: |
Jeremy Hylton | 2afff32 | 2001-08-27 21:51:52 +0000 | [diff] [blame^] | 1020 | self.emit('LOAD_CONST', node.doc) |
| 1021 | self.storeName('__doc__') |
Jeremy Hylton | 364f9b9 | 2001-04-12 06:40:42 +0000 | [diff] [blame] | 1022 | walk(node.code, gen) |
| 1023 | gen.finish() |
| 1024 | self.set_lineno(node) |
| 1025 | self.emit('LOAD_CONST', node.name) |
| 1026 | for base in node.bases: |
| 1027 | self.visit(base) |
| 1028 | self.emit('BUILD_TUPLE', len(node.bases)) |
| 1029 | frees = gen.scope.get_free_vars() |
| 1030 | for name in frees: |
| 1031 | self.emit('LOAD_CLOSURE', name) |
| 1032 | self.emit('LOAD_CONST', gen) |
| 1033 | if frees: |
| 1034 | self.emit('MAKE_CLOSURE', 0) |
| 1035 | else: |
| 1036 | self.emit('MAKE_FUNCTION', 0) |
| 1037 | self.emit('CALL_FUNCTION', 0) |
| 1038 | self.emit('BUILD_CLASS') |
| 1039 | self.storeName(node.name) |
| 1040 | |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 1041 | |
Jeremy Hylton | 364f9b9 | 2001-04-12 06:40:42 +0000 | [diff] [blame] | 1042 | class LGBScopeMixin: |
| 1043 | """Defines initClass() for Python 2.1-compatible scoping""" |
| 1044 | def initClass(self): |
| 1045 | self.__class__.NameFinder = LocalNameFinder |
| 1046 | self.__class__.FunctionGen = FunctionCodeGenerator |
| 1047 | self.__class__.ClassGen = ClassCodeGenerator |
| 1048 | |
| 1049 | class NestedScopeMixin: |
| 1050 | """Defines initClass() for nested scoping (Python 2.2-compatible)""" |
| 1051 | def initClass(self): |
| 1052 | self.__class__.NameFinder = LocalNameFinder |
| 1053 | self.__class__.FunctionGen = NestedFunctionCodeGenerator |
| 1054 | self.__class__.ClassGen = NestedClassCodeGenerator |
| 1055 | |
| 1056 | class ModuleCodeGenerator(LGBScopeMixin, CodeGenerator): |
| 1057 | __super_init = CodeGenerator.__init__ |
| 1058 | |
| 1059 | scopes = None |
| 1060 | |
| 1061 | def __init__(self, filename): |
| 1062 | self.graph = pyassem.PyFlowGraph("<module>", filename) |
| 1063 | self.__super_init(filename) |
| 1064 | |
| 1065 | class NestedScopeModuleCodeGenerator(NestedScopeMixin, |
| 1066 | NestedScopeCodeGenerator): |
| 1067 | __super_init = CodeGenerator.__init__ |
| 1068 | |
| 1069 | def __init__(self, filename): |
| 1070 | self.graph = pyassem.PyFlowGraph("<module>", filename) |
| 1071 | self.__super_init(filename) |
Jeremy Hylton | 2afff32 | 2001-08-27 21:51:52 +0000 | [diff] [blame^] | 1072 | ## self.graph.setFlag(CO_NESTED) |
Jeremy Hylton | 364f9b9 | 2001-04-12 06:40:42 +0000 | [diff] [blame] | 1073 | |
| 1074 | class AbstractFunctionCode: |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 1075 | optimized = 1 |
| 1076 | lambdaCount = 0 |
Jeremy Hylton | 8b6323d | 2000-02-04 00:28:21 +0000 | [diff] [blame] | 1077 | |
Jeremy Hylton | 364f9b9 | 2001-04-12 06:40:42 +0000 | [diff] [blame] | 1078 | def __init__(self, func, filename, scopes, isLambda): |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 1079 | if isLambda: |
| 1080 | klass = FunctionCodeGenerator |
| 1081 | name = "<lambda.%d>" % klass.lambdaCount |
| 1082 | klass.lambdaCount = klass.lambdaCount + 1 |
Jeremy Hylton | 873bdc1 | 2000-02-17 17:56:29 +0000 | [diff] [blame] | 1083 | else: |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 1084 | name = func.name |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 1085 | args, hasTupleArg = generateArgList(func.argnames) |
| 1086 | self.graph = pyassem.PyFlowGraph(name, filename, args, |
Jeremy Hylton | 9ab019b | 2001-04-11 16:24:30 +0000 | [diff] [blame] | 1087 | optimized=1) |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 1088 | self.isLambda = isLambda |
| 1089 | self.super_init(filename) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 1090 | |
Jeremy Hylton | 9ab019b | 2001-04-11 16:24:30 +0000 | [diff] [blame] | 1091 | if not isLambda and func.doc: |
| 1092 | self.setDocstring(func.doc) |
| 1093 | |
Jeremy Hylton | 2afff32 | 2001-08-27 21:51:52 +0000 | [diff] [blame^] | 1094 | lnf = walk(func.code, self.NameFinder(args), verbose=0) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 1095 | self.locals.push(lnf.getLocals()) |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 1096 | if func.varargs: |
| 1097 | self.graph.setFlag(CO_VARARGS) |
| 1098 | if func.kwargs: |
| 1099 | self.graph.setFlag(CO_VARKEYWORDS) |
Jeremy Hylton | 7daf04d | 2000-08-04 16:56:51 +0000 | [diff] [blame] | 1100 | self.set_lineno(func) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 1101 | if hasTupleArg: |
| 1102 | self.generateArgUnpack(func.argnames) |
| 1103 | |
| 1104 | def finish(self): |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 1105 | self.graph.startExitBlock() |
| 1106 | if not self.isLambda: |
| 1107 | self.emit('LOAD_CONST', None) |
| 1108 | self.emit('RETURN_VALUE') |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 1109 | |
| 1110 | def generateArgUnpack(self, args): |
Jeremy Hylton | bfb0cf8 | 2001-04-12 17:33:34 +0000 | [diff] [blame] | 1111 | for i in range(len(args)): |
| 1112 | arg = args[i] |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 1113 | if type(arg) == types.TupleType: |
Jeremy Hylton | bfb0cf8 | 2001-04-12 17:33:34 +0000 | [diff] [blame] | 1114 | self.emit('LOAD_FAST', '.%d' % (i * 2)) |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 1115 | self.unpackSequence(arg) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 1116 | |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 1117 | def unpackSequence(self, tup): |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 1118 | if VERSION > 1: |
| 1119 | self.emit('UNPACK_SEQUENCE', len(tup)) |
| 1120 | else: |
| 1121 | self.emit('UNPACK_TUPLE', len(tup)) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 1122 | for elt in tup: |
| 1123 | if type(elt) == types.TupleType: |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 1124 | self.unpackSequence(elt) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 1125 | else: |
Jeremy Hylton | 3f76b7e | 2001-04-12 06:52:27 +0000 | [diff] [blame] | 1126 | self._nameOp('STORE', elt) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 1127 | |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 1128 | unpackTuple = unpackSequence |
| 1129 | |
Jeremy Hylton | 364f9b9 | 2001-04-12 06:40:42 +0000 | [diff] [blame] | 1130 | class FunctionCodeGenerator(LGBScopeMixin, AbstractFunctionCode, |
| 1131 | CodeGenerator): |
| 1132 | super_init = CodeGenerator.__init__ # call be other init |
| 1133 | scopes = None |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 1134 | |
Jeremy Hylton | 364f9b9 | 2001-04-12 06:40:42 +0000 | [diff] [blame] | 1135 | class NestedFunctionCodeGenerator(AbstractFunctionCode, |
| 1136 | NestedScopeMixin, |
| 1137 | NestedScopeCodeGenerator): |
| 1138 | super_init = NestedScopeCodeGenerator.__init__ # call be other init |
| 1139 | __super_init = AbstractFunctionCode.__init__ |
| 1140 | |
| 1141 | def __init__(self, func, filename, scopes, isLambda): |
| 1142 | self.scopes = scopes |
| 1143 | self.scope = scopes[func] |
| 1144 | self.__super_init(func, filename, scopes, isLambda) |
| 1145 | self.graph.setFreeVars(self.scope.get_free_vars()) |
| 1146 | self.graph.setCellVars(self.scope.get_cell_vars()) |
Jeremy Hylton | 2afff32 | 2001-08-27 21:51:52 +0000 | [diff] [blame^] | 1147 | ## self.graph.setFlag(CO_NESTED) |
Jeremy Hylton | 364f9b9 | 2001-04-12 06:40:42 +0000 | [diff] [blame] | 1148 | |
| 1149 | class AbstractClassCode: |
| 1150 | |
| 1151 | def __init__(self, klass, filename, scopes): |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 1152 | self.graph = pyassem.PyFlowGraph(klass.name, filename, |
| 1153 | optimized=0) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 1154 | self.super_init(filename) |
Jeremy Hylton | 2afff32 | 2001-08-27 21:51:52 +0000 | [diff] [blame^] | 1155 | lnf = walk(klass.code, self.NameFinder(), verbose=0) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 1156 | self.locals.push(lnf.getLocals()) |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 1157 | self.graph.setFlag(CO_NEWLOCALS) |
Jeremy Hylton | 9ab019b | 2001-04-11 16:24:30 +0000 | [diff] [blame] | 1158 | if klass.doc: |
| 1159 | self.setDocstring(klass.doc) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 1160 | |
Jeremy Hylton | 660cc77 | 2001-04-12 06:49:00 +0000 | [diff] [blame] | 1161 | def _nameOp(self, prefix, name): |
Jeremy Hylton | 3f76b7e | 2001-04-12 06:52:27 +0000 | [diff] [blame] | 1162 | # Class namespaces are always unoptimized |
Jeremy Hylton | 660cc77 | 2001-04-12 06:49:00 +0000 | [diff] [blame] | 1163 | self.emit(prefix + '_NAME', name) |
| 1164 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 1165 | def finish(self): |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 1166 | self.graph.startExitBlock() |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 1167 | self.emit('LOAD_LOCALS') |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 1168 | self.emit('RETURN_VALUE') |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 1169 | |
Jeremy Hylton | 364f9b9 | 2001-04-12 06:40:42 +0000 | [diff] [blame] | 1170 | class ClassCodeGenerator(LGBScopeMixin, AbstractClassCode, CodeGenerator): |
| 1171 | super_init = CodeGenerator.__init__ |
| 1172 | scopes = None |
| 1173 | |
| 1174 | class NestedClassCodeGenerator(AbstractClassCode, |
| 1175 | NestedScopeMixin, |
| 1176 | NestedScopeCodeGenerator): |
| 1177 | super_init = NestedScopeCodeGenerator.__init__ # call be other init |
| 1178 | __super_init = AbstractClassCode.__init__ |
| 1179 | |
| 1180 | def __init__(self, klass, filename, scopes): |
| 1181 | self.scopes = scopes |
| 1182 | self.scope = scopes[klass] |
| 1183 | self.__super_init(klass, filename, scopes) |
| 1184 | self.graph.setFreeVars(self.scope.get_free_vars()) |
| 1185 | self.graph.setCellVars(self.scope.get_cell_vars()) |
Jeremy Hylton | 2afff32 | 2001-08-27 21:51:52 +0000 | [diff] [blame^] | 1186 | ## self.graph.setFlag(CO_NESTED) |
Jeremy Hylton | 364f9b9 | 2001-04-12 06:40:42 +0000 | [diff] [blame] | 1187 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 1188 | def generateArgList(arglist): |
| 1189 | """Generate an arg list marking TupleArgs""" |
| 1190 | args = [] |
| 1191 | extra = [] |
| 1192 | count = 0 |
Jeremy Hylton | bfb0cf8 | 2001-04-12 17:33:34 +0000 | [diff] [blame] | 1193 | for i in range(len(arglist)): |
| 1194 | elt = arglist[i] |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 1195 | if type(elt) == types.StringType: |
| 1196 | args.append(elt) |
| 1197 | elif type(elt) == types.TupleType: |
Jeremy Hylton | bfb0cf8 | 2001-04-12 17:33:34 +0000 | [diff] [blame] | 1198 | args.append(TupleArg(i * 2, elt)) |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 1199 | extra.extend(misc.flatten(elt)) |
Jeremy Hylton | bfb0cf8 | 2001-04-12 17:33:34 +0000 | [diff] [blame] | 1200 | count = count + 1 |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 1201 | else: |
| 1202 | raise ValueError, "unexpect argument type:", elt |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 1203 | return args + extra, count |
Jeremy Hylton | a505812 | 2000-02-14 14:14:29 +0000 | [diff] [blame] | 1204 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 1205 | def findOp(node): |
| 1206 | """Find the op (DELETE, LOAD, STORE) in an AssTuple tree""" |
| 1207 | v = OpFinder() |
Jeremy Hylton | 2afff32 | 2001-08-27 21:51:52 +0000 | [diff] [blame^] | 1208 | walk(node, v, verbose=0) |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 1209 | return v.op |
| 1210 | |
Jeremy Hylton | 3ec7e2c | 2000-02-17 22:09:35 +0000 | [diff] [blame] | 1211 | class OpFinder: |
| 1212 | def __init__(self): |
| 1213 | self.op = None |
| 1214 | def visitAssName(self, node): |
| 1215 | if self.op is None: |
| 1216 | self.op = node.flags |
| 1217 | elif self.op != node.flags: |
| 1218 | raise ValueError, "mixed ops in stmt" |
Jeremy Hylton | 614e87f | 2001-04-12 20:24:26 +0000 | [diff] [blame] | 1219 | visitAssAttr = visitAssName |
Jeremy Hylton | 3ec7e2c | 2000-02-17 22:09:35 +0000 | [diff] [blame] | 1220 | |
Jeremy Hylton | 9c048f9 | 2000-10-13 21:58:13 +0000 | [diff] [blame] | 1221 | class Delegator: |
| 1222 | """Base class to support delegation for augmented assignment nodes |
| 1223 | |
| 1224 | To generator code for augmented assignments, we use the following |
| 1225 | wrapper classes. In visitAugAssign, the left-hand expression node |
| 1226 | is visited twice. The first time the visit uses the normal method |
| 1227 | for that node . The second time the visit uses a different method |
| 1228 | that generates the appropriate code to perform the assignment. |
| 1229 | These delegator classes wrap the original AST nodes in order to |
| 1230 | support the variant visit methods. |
| 1231 | """ |
| 1232 | def __init__(self, obj): |
| 1233 | self.obj = obj |
| 1234 | |
| 1235 | def __getattr__(self, attr): |
| 1236 | return getattr(self.obj, attr) |
| 1237 | |
| 1238 | class AugGetattr(Delegator): |
| 1239 | pass |
| 1240 | |
| 1241 | class AugName(Delegator): |
| 1242 | pass |
| 1243 | |
| 1244 | class AugSlice(Delegator): |
| 1245 | pass |
| 1246 | |
| 1247 | class AugSubscript(Delegator): |
| 1248 | pass |
| 1249 | |
| 1250 | wrapper = { |
| 1251 | ast.Getattr: AugGetattr, |
| 1252 | ast.Name: AugName, |
| 1253 | ast.Slice: AugSlice, |
| 1254 | ast.Subscript: AugSubscript, |
| 1255 | } |
| 1256 | |
| 1257 | def wrap_aug(node): |
| 1258 | return wrapper[node.__class__](node) |
| 1259 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 1260 | if __name__ == "__main__": |
| 1261 | import sys |
Jeremy Hylton | 3ec7e2c | 2000-02-17 22:09:35 +0000 | [diff] [blame] | 1262 | |
Jeremy Hylton | 36cc6a2 | 2000-03-16 20:06:59 +0000 | [diff] [blame] | 1263 | for file in sys.argv[1:]: |
Thomas Wouters | 46cc7c0 | 2000-08-12 20:32:46 +0000 | [diff] [blame] | 1264 | compile(file) |