| 1 | """
|
| 2 | visitor.py - base class for all our tree traversals.
|
| 3 |
|
| 4 | It validates many nodes, i.e. presenting a subset of the MyPy AST to
|
| 5 | subclasses.
|
| 6 | """
|
| 7 | import mypy
|
| 8 | from mypy.visitor import ExpressionVisitor, StatementVisitor
|
| 9 | from mypy.nodes import (Expression, Statement, ExpressionStmt, StrExpr,
|
| 10 | CallExpr, YieldExpr, NameExpr, MemberExpr, Argument,
|
| 11 | ClassDef, FuncDef, IfStmt, PassStmt, ListComprehension)
|
| 12 | from mypy.types import Type
|
| 13 |
|
| 14 | from mycpp.crash import catch_errors
|
| 15 | from mycpp import util
|
| 16 | from mycpp.util import SplitPyName, log
|
| 17 |
|
| 18 | from typing import (overload, Any, Union, Optional, List, Dict, Tuple, TextIO)
|
| 19 |
|
| 20 | NAME_CONFLICTS = ('stdin', 'stdout', 'stderr')
|
| 21 |
|
| 22 |
|
| 23 | class SimpleVisitor(ExpressionVisitor[None], StatementVisitor[None]):
|
| 24 | """
|
| 25 | A simple AST visitor that accepts every node in the AST. Derrived classes
|
| 26 | can override the visit methods that are relevant to them.
|
| 27 | """
|
| 28 |
|
| 29 | def __init__(self) -> None:
|
| 30 | self.module_path: Optional[str] = None
|
| 31 |
|
| 32 | self.current_class_name: Optional[util.SymbolPath] = None
|
| 33 | self.current_method_name: Optional[str] = None
|
| 34 |
|
| 35 | # So we can report multiple at once
|
| 36 | # module path, line number, message
|
| 37 | self.errors_keep_going: List[Tuple[str, int, str]] = []
|
| 38 |
|
| 39 | self.at_global_scope = True
|
| 40 | self.indent = 0
|
| 41 | self.f: Optional[TextIO] = None
|
| 42 |
|
| 43 | def SetOutputFile(self, f: TextIO) -> None:
|
| 44 | self.f = f
|
| 45 |
|
| 46 | def log(self, msg: str, *args: Any) -> None:
|
| 47 | """Log to STDERR"""
|
| 48 | ind_str = self.indent * ' '
|
| 49 | log(ind_str + msg, *args)
|
| 50 |
|
| 51 | def write(self, msg: str, *args: Any) -> None:
|
| 52 | if args:
|
| 53 | msg = msg % args
|
| 54 | assert self.f is not None
|
| 55 | self.f.write(msg)
|
| 56 |
|
| 57 | def write_ind(self, msg: str, *args: Any) -> None:
|
| 58 | ind_str = self.indent * ' '
|
| 59 | self.write(ind_str + msg, *args)
|
| 60 |
|
| 61 | #
|
| 62 | # COPIED from mypyc IRBuilder
|
| 63 | #
|
| 64 |
|
| 65 | @overload
|
| 66 | def accept(self, node: Expression) -> None:
|
| 67 | ...
|
| 68 |
|
| 69 | @overload
|
| 70 | def accept(self, node: Statement) -> None:
|
| 71 | ...
|
| 72 |
|
| 73 | def accept(self, node: Union[Statement, Expression]) -> None:
|
| 74 | with catch_errors(self.module_path, node.line):
|
| 75 | if isinstance(node, Expression):
|
| 76 | node.accept(self)
|
| 77 | else:
|
| 78 | node.accept(self)
|
| 79 |
|
| 80 | #
|
| 81 | # Error API
|
| 82 | #
|
| 83 |
|
| 84 | def report_error(self, node: Union[Statement, Expression, Argument],
|
| 85 | msg: str) -> None:
|
| 86 | err = (self.module_path, node.line, msg)
|
| 87 | self.errors_keep_going.append(err)
|
| 88 |
|
| 89 | def not_translated(self, node: Union[Statement, Expression],
|
| 90 | name: str) -> None:
|
| 91 | self.report_error(node, '%s not translated' % name)
|
| 92 |
|
| 93 | def not_python2(self, node: Union[Statement, Expression],
|
| 94 | name: str) -> None:
|
| 95 | self.report_error(node, "%s: shouldn't get here in Python 2" % name)
|
| 96 |
|
| 97 | def oils_visit_mypy_file(self, o: 'mypy.nodes.MypyFile') -> None:
|
| 98 | for node in o.defs:
|
| 99 | self.accept(node)
|
| 100 |
|
| 101 | def visit_mypy_file(self, o: 'mypy.nodes.MypyFile') -> None:
|
| 102 | if util.ShouldSkipPyFile(o):
|
| 103 | return
|
| 104 |
|
| 105 | self.module_path = o.path
|
| 106 |
|
| 107 | self.oils_visit_mypy_file(o)
|
| 108 |
|
| 109 | # Now show errors for each file
|
| 110 | for path, line_num, msg in self.errors_keep_going:
|
| 111 | self.log('%s:%s %s', path, line_num, msg)
|
| 112 |
|
| 113 | def oils_visit_for_stmt(self, o: 'mypy.nodes.ForStmt',
|
| 114 | func_name: Optional[str]) -> None:
|
| 115 | self.accept(o.index) # index var expression
|
| 116 | self.accept(o.expr)
|
| 117 | self.accept(o.body)
|
| 118 | if o.else_body:
|
| 119 | raise AssertionError("can't translate for-else")
|
| 120 |
|
| 121 | def visit_for_stmt(self, o: 'mypy.nodes.ForStmt') -> None:
|
| 122 |
|
| 123 | func_name = None # does the loop look like 'for x in func():' ?
|
| 124 | if (isinstance(o.expr, CallExpr) and
|
| 125 | isinstance(o.expr.callee, NameExpr)):
|
| 126 | func_name = o.expr.callee.name
|
| 127 |
|
| 128 | # In addition to func_name, can we also pass
|
| 129 | # iterated_over
|
| 130 | # enumerate() reversed() iteritems() is o.expr[0]
|
| 131 | # otherwise it's o.expr
|
| 132 | # And then you get the type, and if it's typing.Iterator, then the
|
| 133 | # virtual pass can set self.yield_eager_for
|
| 134 |
|
| 135 | self.oils_visit_for_stmt(o, func_name)
|
| 136 |
|
| 137 | # TODO: validate and destructure the different kinds of loops
|
| 138 | #
|
| 139 | # xrange() - 1 index
|
| 140 | # xrange negative
|
| 141 | # enumerate() - 2 indices
|
| 142 | # reversed() - container - 1 index
|
| 143 | # iteritems() - dict, 2 indices
|
| 144 | #
|
| 145 | # - over list
|
| 146 | # - over dict - list comprehensions would need this too
|
| 147 | # - over iterator
|
| 148 | #
|
| 149 | # LHS
|
| 150 | # - NameExpr
|
| 151 | # - TupleExpr
|
| 152 | #
|
| 153 | # More destructuring:
|
| 154 | #
|
| 155 | # item_type - is it a Tuple?
|
| 156 | # enumerate - o.inferred_item_type[1]
|
| 157 | # otherwise (xrange, reversed, iteritems) - o.inferred_item_type
|
| 158 | #
|
| 159 | # elif isinstance(item_type, TupleType): # for x, y in pairs
|
| 160 | # if over_dict:
|
| 161 | # ...
|
| 162 | # else # it's a List
|
| 163 | # if isinstance(o.index, TupleExpr):
|
| 164 | # ...
|
| 165 | # self._write_tuple_unpacking(temp_name, o.index.items, item_type.items)
|
| 166 | #
|
| 167 | # We need to detect this
|
| 168 | # And then also detect it for list comprehensions
|
| 169 |
|
| 170 | # Two different tests:
|
| 171 | # for loop test
|
| 172 | # if isinstance(o.index, TupleExpr):
|
| 173 |
|
| 174 | def visit_with_stmt(self, o: 'mypy.nodes.WithStmt') -> None:
|
| 175 | assert len(o.expr) == 1, o.expr
|
| 176 | expr = o.expr[0]
|
| 177 | assert isinstance(expr, CallExpr), expr
|
| 178 | self.accept(expr)
|
| 179 | self.accept(o.body)
|
| 180 |
|
| 181 | def oils_visit_func_def(self, o: 'mypy.nodes.FuncDef') -> None:
|
| 182 | """Only the functions we care about in Oils."""
|
| 183 | for arg in o.arguments:
|
| 184 | if arg.initializer:
|
| 185 | self.accept(arg.initializer)
|
| 186 |
|
| 187 | self.accept(o.body)
|
| 188 |
|
| 189 | def visit_func_def(self, o: 'mypy.nodes.FuncDef') -> None:
|
| 190 | # This could be a free function or a method
|
| 191 | # __init__ __exit__ and other methods call this, with self.current_class_name set
|
| 192 |
|
| 193 | # If an assignment statement is not in a function or method, then it's at global scope
|
| 194 |
|
| 195 | self.at_global_scope = False
|
| 196 | self.oils_visit_func_def(o)
|
| 197 | self.at_global_scope = True
|
| 198 |
|
| 199 | #
|
| 200 | # Classes
|
| 201 | #
|
| 202 |
|
| 203 | def oils_visit_constructor(self, o: ClassDef, stmt: FuncDef,
|
| 204 | base_class_sym: util.SymbolPath) -> None:
|
| 205 | self.accept(stmt)
|
| 206 |
|
| 207 | def oils_visit_dunder_exit(self, o: ClassDef, stmt: FuncDef,
|
| 208 | base_class_sym: util.SymbolPath) -> None:
|
| 209 | self.accept(stmt)
|
| 210 |
|
| 211 | def oils_visit_method(self, o: ClassDef, stmt: FuncDef,
|
| 212 | base_class_sym: util.SymbolPath) -> None:
|
| 213 | self.accept(stmt)
|
| 214 |
|
| 215 | def oils_visit_class_members(self, o: ClassDef,
|
| 216 | base_class_sym: util.SymbolPath) -> None:
|
| 217 | """Hook for writing member vars."""
|
| 218 | # Do nothing by default.
|
| 219 | pass
|
| 220 |
|
| 221 | def oils_visit_class_def(
|
| 222 | self, o: 'mypy.nodes.ClassDef',
|
| 223 | base_class_sym: Optional[util.SymbolPath]) -> None:
|
| 224 |
|
| 225 | for stmt in o.defs.body:
|
| 226 | # Skip class docstrings
|
| 227 | if (isinstance(stmt, ExpressionStmt) and
|
| 228 | isinstance(stmt.expr, StrExpr)):
|
| 229 | continue
|
| 230 |
|
| 231 | # Skip empty classes
|
| 232 | if isinstance(stmt, PassStmt):
|
| 233 | continue
|
| 234 |
|
| 235 | if isinstance(stmt, FuncDef):
|
| 236 | method_name = stmt.name
|
| 237 |
|
| 238 | # Don't translate
|
| 239 | if method_name in ('__enter__', '__repr__'):
|
| 240 | continue
|
| 241 |
|
| 242 | if method_name == '__init__': # Don't translate
|
| 243 | self.current_method_name = stmt.name
|
| 244 | self.oils_visit_constructor(o, stmt, base_class_sym)
|
| 245 | self.current_method_name = None
|
| 246 | continue
|
| 247 |
|
| 248 | if method_name == '__exit__': # Don't translate
|
| 249 | self.current_method_name = stmt.name
|
| 250 | self.oils_visit_dunder_exit(o, stmt, base_class_sym)
|
| 251 | self.current_method_name = None
|
| 252 | continue
|
| 253 |
|
| 254 | self.current_method_name = stmt.name
|
| 255 | self.oils_visit_method(o, stmt, base_class_sym)
|
| 256 | self.current_method_name = None
|
| 257 | continue
|
| 258 |
|
| 259 | # if 0: is allowed
|
| 260 | if isinstance(stmt, IfStmt):
|
| 261 | self.accept(stmt)
|
| 262 | continue
|
| 263 |
|
| 264 | self.report_error(
|
| 265 | o, 'Classes may only have method definitions, got %s' % stmt)
|
| 266 |
|
| 267 | self.oils_visit_class_members(o, base_class_sym)
|
| 268 |
|
| 269 | def visit_class_def(self, o: 'mypy.nodes.ClassDef') -> None:
|
| 270 | base_class_sym = None # single inheritance only
|
| 271 | if len(o.base_type_exprs) > 1:
|
| 272 | self.report_error(o, 'too many base types: %s' % o.base_type_exprs)
|
| 273 | return
|
| 274 |
|
| 275 | for b in o.base_type_exprs:
|
| 276 | if isinstance(b, NameExpr):
|
| 277 | if b.name != 'object' and b.name != 'Exception':
|
| 278 | base_class_sym = SplitPyName(b.fullname)
|
| 279 | elif isinstance(b, MemberExpr): # vm._Executor -> vm::_Executor
|
| 280 | assert isinstance(b.expr, NameExpr), b
|
| 281 | base_class_sym = SplitPyName(b.expr.fullname) + (b.name, )
|
| 282 | else:
|
| 283 | # shouldn't happen
|
| 284 | raise AssertionError(b)
|
| 285 |
|
| 286 | self.current_class_name = SplitPyName(o.fullname)
|
| 287 | self.oils_visit_class_def(o, base_class_sym)
|
| 288 | self.current_class_name = None
|
| 289 |
|
| 290 | # Statements
|
| 291 |
|
| 292 | def oils_visit_assignment_stmt(self, o: 'mypy.nodes.AssignmentStmt',
|
| 293 | lval: Expression, rval: Expression) -> None:
|
| 294 | self.accept(lval)
|
| 295 | self.accept(rval)
|
| 296 |
|
| 297 | def visit_assignment_stmt(self, o: 'mypy.nodes.AssignmentStmt') -> None:
|
| 298 | # We never use this idiom: x = y = 42
|
| 299 | assert len(o.lvalues) == 1, o.lvalues
|
| 300 | lval = o.lvalues[0]
|
| 301 |
|
| 302 | # Metadata we'll never use
|
| 303 | if isinstance(lval, NameExpr):
|
| 304 | if lval.name == '__all__':
|
| 305 | return
|
| 306 |
|
| 307 | # Special case for
|
| 308 | if isinstance(o.rvalue, ListComprehension):
|
| 309 | self.visit_assign_to_listcomp(o, lval)
|
| 310 | return
|
| 311 |
|
| 312 | # TODO: virtual pass might want this
|
| 313 | # However it depends on TYPES. Right now the visitor doesn't depend on types
|
| 314 | # if (isinstance(rval_type, Instance) and
|
| 315 | # rval_type.type.fullname == 'typing.Iterator'):
|
| 316 | # self._AssignToGenerator(o, lval, rval_type)
|
| 317 | # return
|
| 318 | # Key reason it needs to be in the virtual pass is that signatures
|
| 319 | # must change to allow an out param.
|
| 320 |
|
| 321 | self.oils_visit_assignment_stmt(o, lval, o.rvalue)
|
| 322 |
|
| 323 | def visit_operator_assignment_stmt(
|
| 324 | self, o: 'mypy.nodes.OperatorAssignmentStmt') -> None:
|
| 325 | self.accept(o.lvalue)
|
| 326 | self.accept(o.rvalue)
|
| 327 |
|
| 328 | def visit_block(self, block: 'mypy.nodes.Block') -> None:
|
| 329 | for stmt in block.body:
|
| 330 | self.accept(stmt)
|
| 331 |
|
| 332 | def oils_visit_expression_stmt(self,
|
| 333 | o: 'mypy.nodes.ExpressionStmt') -> None:
|
| 334 | self.accept(o.expr)
|
| 335 |
|
| 336 | def visit_expression_stmt(self, o: 'mypy.nodes.ExpressionStmt') -> None:
|
| 337 | # Ignore all docstrings: module, class, and function body
|
| 338 | if isinstance(o.expr, StrExpr):
|
| 339 | return
|
| 340 |
|
| 341 | # Either f() or obj.method()
|
| 342 | assert isinstance(o.expr, (CallExpr, YieldExpr)), o.expr
|
| 343 |
|
| 344 | self.oils_visit_expression_stmt(o)
|
| 345 |
|
| 346 | def visit_while_stmt(self, o: 'mypy.nodes.WhileStmt') -> None:
|
| 347 | self.accept(o.expr)
|
| 348 | self.accept(o.body)
|
| 349 |
|
| 350 | def visit_return_stmt(self, o: 'mypy.nodes.ReturnStmt') -> None:
|
| 351 | if o.expr:
|
| 352 | self.accept(o.expr)
|
| 353 |
|
| 354 | def visit_if_stmt(self, o: 'mypy.nodes.IfStmt') -> None:
|
| 355 | if util.ShouldVisitIfExpr(o):
|
| 356 | for expr in o.expr:
|
| 357 | self.accept(expr)
|
| 358 |
|
| 359 | if util.ShouldVisitIfBody(o):
|
| 360 | for body in o.body:
|
| 361 | self.accept(body)
|
| 362 |
|
| 363 | if util.ShouldVisitElseBody(o):
|
| 364 | self.accept(o.else_body)
|
| 365 |
|
| 366 | def visit_raise_stmt(self, o: 'mypy.nodes.RaiseStmt') -> None:
|
| 367 | if o.expr:
|
| 368 | self.accept(o.expr)
|
| 369 |
|
| 370 | def visit_try_stmt(self, o: 'mypy.nodes.TryStmt') -> None:
|
| 371 | self.accept(o.body)
|
| 372 | for handler in o.handlers:
|
| 373 | self.accept(handler)
|
| 374 |
|
| 375 | def visit_del_stmt(self, o: 'mypy.nodes.DelStmt') -> None:
|
| 376 | self.accept(o.expr)
|
| 377 |
|
| 378 | # Expressions
|
| 379 |
|
| 380 | def visit_generator_expr(self, o: 'mypy.nodes.GeneratorExpr') -> None:
|
| 381 | raise AssertionError()
|
| 382 |
|
| 383 | self.accept(o.left_expr)
|
| 384 |
|
| 385 | for expr in o.indices:
|
| 386 | self.accept(expr)
|
| 387 |
|
| 388 | for expr in o.sequences:
|
| 389 | self.accept(expr)
|
| 390 |
|
| 391 | for l in o.condlists:
|
| 392 | for expr in l:
|
| 393 | self.accept(expr)
|
| 394 |
|
| 395 | def visit_list_comprehension(self,
|
| 396 | o: 'mypy.nodes.ListComprehension') -> None:
|
| 397 | # old code
|
| 398 | #self.accept(o.generator)
|
| 399 | self.report_error(o,
|
| 400 | 'List comprehension must be assigned to a temp var')
|
| 401 |
|
| 402 | def oils_visit_assign_to_listcomp(self, lval: NameExpr,
|
| 403 | left_expr: Expression,
|
| 404 | index_expr: Expression, seq: Expression,
|
| 405 | cond: Expression) -> None:
|
| 406 | self.accept(lval)
|
| 407 | self.accept(left_expr)
|
| 408 | self.accept(index_expr)
|
| 409 | self.accept(seq)
|
| 410 | if cond is not None:
|
| 411 | self.accept(cond)
|
| 412 |
|
| 413 | def visit_assign_to_listcomp(self, o: 'mypy.nodes.AssignmentStmt',
|
| 414 | lval: NameExpr) -> None:
|
| 415 | gen = o.rvalue.generator # GeneratorExpr
|
| 416 |
|
| 417 | if (len(gen.indices) != 1 or len(gen.sequences) != 1 or
|
| 418 | len(gen.condlists) != 1):
|
| 419 | self.report_error(o, 'List comprehensions can only have one loop')
|
| 420 |
|
| 421 | index_expr = gen.indices[0]
|
| 422 | seq = gen.sequences[0]
|
| 423 | condlist = gen.condlists[0]
|
| 424 |
|
| 425 | if len(condlist) == 0:
|
| 426 | cond: Optional[Expression] = None
|
| 427 | elif len(condlist) == 1:
|
| 428 | cond = condlist[0]
|
| 429 | else:
|
| 430 | self.report_error(
|
| 431 | o, 'List comprehensions may have at most one condition')
|
| 432 |
|
| 433 | self.oils_visit_assign_to_listcomp(lval, gen.left_expr, index_expr,
|
| 434 | seq, cond)
|
| 435 |
|
| 436 | def visit_yield_expr(self, o: 'mypy.nodes.YieldExpr') -> None:
|
| 437 | self.accept(o.expr)
|
| 438 |
|
| 439 | def visit_op_expr(self, o: 'mypy.nodes.OpExpr') -> None:
|
| 440 | self.accept(o.left)
|
| 441 | self.accept(o.right)
|
| 442 |
|
| 443 | def visit_comparison_expr(self, o: 'mypy.nodes.ComparisonExpr') -> None:
|
| 444 | for operand in o.operands:
|
| 445 | self.accept(operand)
|
| 446 |
|
| 447 | def visit_unary_expr(self, o: 'mypy.nodes.UnaryExpr') -> None:
|
| 448 | # e.g. -42 or 'not x'
|
| 449 | self.accept(o.expr)
|
| 450 |
|
| 451 | def visit_list_expr(self, o: 'mypy.nodes.ListExpr') -> None:
|
| 452 | for item in o.items:
|
| 453 | self.accept(item)
|
| 454 |
|
| 455 | def visit_dict_expr(self, o: 'mypy.nodes.DictExpr') -> None:
|
| 456 | for k, v in o.items:
|
| 457 | self.accept(k)
|
| 458 | self.accept(v)
|
| 459 |
|
| 460 | def visit_tuple_expr(self, o: 'mypy.nodes.TupleExpr') -> None:
|
| 461 | for item in o.items:
|
| 462 | self.accept(item)
|
| 463 |
|
| 464 | def visit_index_expr(self, o: 'mypy.nodes.IndexExpr') -> None:
|
| 465 | self.accept(o.base)
|
| 466 | self.accept(o.index)
|
| 467 |
|
| 468 | def visit_slice_expr(self, o: 'mypy.nodes.SliceExpr') -> None:
|
| 469 | if o.begin_index:
|
| 470 | self.accept(o.begin_index)
|
| 471 |
|
| 472 | if o.end_index:
|
| 473 | self.accept(o.end_index)
|
| 474 |
|
| 475 | if o.stride:
|
| 476 | self.accept(o.stride)
|
| 477 |
|
| 478 | def visit_conditional_expr(self, o: 'mypy.nodes.ConditionalExpr') -> None:
|
| 479 | self.accept(o.cond)
|
| 480 | self.accept(o.if_expr)
|
| 481 | self.accept(o.else_expr)
|
| 482 |
|
| 483 | def oils_visit_log_call(self, fmt: StrExpr,
|
| 484 | args: List[Expression]) -> None:
|
| 485 | self.accept(fmt)
|
| 486 | for arg in args:
|
| 487 | self.accept(arg)
|
| 488 |
|
| 489 | def oils_visit_probe_call(self, o: 'mypy.nodes.CallExpr') -> None:
|
| 490 | self.accept(o.callee)
|
| 491 | for arg in o.args:
|
| 492 | self.accept(arg)
|
| 493 |
|
| 494 | def oils_visit_call_expr(self, o: 'mypy.nodes.CallExpr') -> None:
|
| 495 | self.accept(o.callee)
|
| 496 | for arg in o.args:
|
| 497 | self.accept(arg)
|
| 498 |
|
| 499 | def visit_call_expr(self, o: 'mypy.nodes.CallExpr') -> None:
|
| 500 | # Oils invariant: check that it'fs () or obj.method()
|
| 501 | assert isinstance(o.callee, (NameExpr, MemberExpr)), o.callee
|
| 502 |
|
| 503 | if isinstance(o.callee, NameExpr):
|
| 504 | callee_name = o.callee.name
|
| 505 |
|
| 506 | if callee_name == 'isinstance':
|
| 507 | self.report_error(o, 'isinstance() not allowed')
|
| 508 | return
|
| 509 |
|
| 510 | if callee_name == 'log':
|
| 511 | # Special printf-style varargs:
|
| 512 | #
|
| 513 | # log('foo %s', x)
|
| 514 | # =>
|
| 515 | # log(StrFormat('foo %s', x))
|
| 516 |
|
| 517 | args = o.args
|
| 518 | assert len(args) > 0, o
|
| 519 | assert isinstance(args[0], StrExpr), args[0]
|
| 520 | fmt = args[0]
|
| 521 |
|
| 522 | self.oils_visit_log_call(fmt, args[1:])
|
| 523 | return
|
| 524 |
|
| 525 | if callee_name == 'probe':
|
| 526 | # DTRACE_PROBE()
|
| 527 | self.oils_visit_probe_call(o)
|
| 528 | return
|
| 529 |
|
| 530 | self.oils_visit_call_expr(o)
|
| 531 |
|
| 532 | #
|
| 533 | # Leaf Statements and Expressions that do nothing
|
| 534 | #
|
| 535 |
|
| 536 | def visit_int_expr(self, o: 'mypy.nodes.IntExpr') -> None:
|
| 537 | pass
|
| 538 |
|
| 539 | def visit_float_expr(self, o: 'mypy.nodes.FloatExpr') -> None:
|
| 540 | pass
|
| 541 |
|
| 542 | def visit_str_expr(self, o: 'mypy.nodes.StrExpr') -> None:
|
| 543 | pass
|
| 544 |
|
| 545 | def visit_break_stmt(self, o: 'mypy.nodes.BreakStmt') -> None:
|
| 546 | pass
|
| 547 |
|
| 548 | def visit_continue_stmt(self, o: 'mypy.nodes.ContinueStmt') -> None:
|
| 549 | pass
|
| 550 |
|
| 551 | def visit_pass_stmt(self, o: 'mypy.nodes.PassStmt') -> None:
|
| 552 | pass
|
| 553 |
|
| 554 | def visit_import(self, o: 'mypy.nodes.Import') -> None:
|
| 555 | pass
|
| 556 |
|
| 557 | def visit_import_from(self, o: 'mypy.nodes.ImportFrom') -> None:
|
| 558 | pass
|
| 559 |
|
| 560 | def oils_visit_name_expr(self, o: 'mypy.nodes.NameExpr') -> None:
|
| 561 | pass
|
| 562 |
|
| 563 | def visit_name_expr(self, o: 'mypy.nodes.NameExpr') -> None:
|
| 564 | if o.name in NAME_CONFLICTS:
|
| 565 | self.report_error(
|
| 566 | o,
|
| 567 | "The name %r conflicts with C macros on some platforms; choose a different name"
|
| 568 | % o.name)
|
| 569 | return
|
| 570 |
|
| 571 | self.oils_visit_name_expr(o)
|
| 572 |
|
| 573 | def oils_visit_member_expr(self, o: 'mypy.nodes.MemberExpr') -> None:
|
| 574 | self.accept(o.expr)
|
| 575 |
|
| 576 | def visit_member_expr(self, o: 'mypy.nodes.MemberExpr') -> None:
|
| 577 | if o.name in NAME_CONFLICTS:
|
| 578 | self.report_error(
|
| 579 | o,
|
| 580 | "The name %r conflicts with C macros on some platforms; choose a different name"
|
| 581 | % o.name)
|
| 582 | return
|
| 583 |
|
| 584 | self.oils_visit_member_expr(o)
|
| 585 |
|
| 586 | #
|
| 587 | # Not doing anything with these?
|
| 588 | #
|
| 589 |
|
| 590 | def visit_cast_expr(self, o: 'mypy.nodes.CastExpr') -> None:
|
| 591 | # I think casts are handle in AssignmentStmt
|
| 592 | pass
|
| 593 |
|
| 594 | def visit_type_application(self, o: 'mypy.nodes.TypeApplication') -> None:
|
| 595 | # what is this?
|
| 596 | pass
|
| 597 |
|
| 598 | def visit_type_var_expr(self, o: 'mypy.nodes.TypeVarExpr') -> None:
|
| 599 | pass
|
| 600 |
|
| 601 | def visit_type_alias_expr(self, o: 'mypy.nodes.TypeAliasExpr') -> None:
|
| 602 | pass
|
| 603 |
|
| 604 | def visit_reveal_expr(self, o: 'mypy.nodes.RevealExpr') -> None:
|
| 605 | pass
|
| 606 |
|
| 607 | def visit_var(self, o: 'mypy.nodes.Var') -> None:
|
| 608 | # Is this a Python 3 class member?
|
| 609 | pass
|
| 610 |
|
| 611 | def visit_assert_stmt(self, o: 'mypy.nodes.AssertStmt') -> None:
|
| 612 | # no-op on purpose
|
| 613 | pass
|
| 614 |
|
| 615 | #
|
| 616 | # Not part of the mycpp dialect
|
| 617 | #
|
| 618 |
|
| 619 | def visit_lambda_expr(self, o: 'mypy.nodes.LambdaExpr') -> None:
|
| 620 | self.not_translated(o, 'lambda')
|
| 621 |
|
| 622 | def visit_set_comprehension(self,
|
| 623 | o: 'mypy.nodes.SetComprehension') -> None:
|
| 624 | self.not_translated(o, 'set comp')
|
| 625 |
|
| 626 | def visit_dictionary_comprehension(
|
| 627 | self, o: 'mypy.nodes.DictionaryComprehension') -> None:
|
| 628 | self.not_translated(o, 'dict comp')
|
| 629 |
|
| 630 | def visit_global_decl(self, o: 'mypy.nodes.GlobalDecl') -> None:
|
| 631 | self.not_translated(o, 'global')
|
| 632 |
|
| 633 | def visit_nonlocal_decl(self, o: 'mypy.nodes.NonlocalDecl') -> None:
|
| 634 | self.not_translated(o, 'nonlocal')
|
| 635 |
|
| 636 | def visit_exec_stmt(self, o: 'mypy.nodes.ExecStmt') -> None:
|
| 637 | self.report_error(o, 'exec not allowed')
|
| 638 |
|
| 639 | # Error
|
| 640 | def visit_print_stmt(self, o: 'mypy.nodes.PrintStmt') -> None:
|
| 641 | self.report_error(
|
| 642 | o,
|
| 643 | 'File should start with "from __future__ import print_function"')
|
| 644 |
|
| 645 | # UNHANDLED
|
| 646 |
|
| 647 | def visit_import_all(self, o: 'mypy.nodes.ImportAll') -> None:
|
| 648 | self.not_translated(o, 'ImportAll')
|
| 649 |
|
| 650 | def visit_overloaded_func_def(self,
|
| 651 | o: 'mypy.nodes.OverloadedFuncDef') -> None:
|
| 652 | self.not_python2(o, 'overloaded func')
|
| 653 |
|
| 654 | def visit_bytes_expr(self, o: 'mypy.nodes.BytesExpr') -> None:
|
| 655 | self.not_python2(o, 'bytes expr')
|
| 656 |
|
| 657 | def visit_unicode_expr(self, o: 'mypy.nodes.UnicodeExpr') -> None:
|
| 658 | self.not_translated(o, 'unicode expr')
|
| 659 |
|
| 660 | def visit_complex_expr(self, o: 'mypy.nodes.ComplexExpr') -> None:
|
| 661 | self.not_translated(o, 'complex expr')
|
| 662 |
|
| 663 | def visit_set_expr(self, o: 'mypy.nodes.SetExpr') -> None:
|
| 664 | self.not_translated(o, 'set expr')
|
| 665 |
|
| 666 | def visit_ellipsis(self, o: 'mypy.nodes.EllipsisExpr') -> None:
|
| 667 | # is this in .pyi files only?
|
| 668 | self.not_translated(o, 'ellipsis')
|
| 669 |
|
| 670 | def visit_yield_from_expr(self, o: 'mypy.nodes.YieldFromExpr') -> None:
|
| 671 | self.not_python2(o, 'yield from')
|
| 672 |
|
| 673 | def visit_star_expr(self, o: 'mypy.nodes.StarExpr') -> None:
|
| 674 | # mycpp/examples/invalid_python.py doesn't hit this?
|
| 675 | self.not_translated(o, 'star expr')
|
| 676 |
|
| 677 | def visit_super_expr(self, o: 'mypy.nodes.SuperExpr') -> None:
|
| 678 | self.not_translated(o, 'super expr')
|
| 679 |
|
| 680 | def visit_assignment_expr(self, o: 'mypy.nodes.AssignmentExpr') -> None:
|
| 681 | # I think this is a := b
|
| 682 | self.not_translated(o, 'assign expr')
|
| 683 |
|
| 684 | def visit_decorator(self, o: 'mypy.nodes.Decorator') -> None:
|
| 685 | self.not_translated(o, 'decorator')
|
| 686 |
|
| 687 | def visit_backquote_expr(self, o: 'mypy.nodes.BackquoteExpr') -> None:
|
| 688 | self.not_translated(o, 'backquote')
|
| 689 |
|
| 690 | def visit_namedtuple_expr(self, o: 'mypy.nodes.NamedTupleExpr') -> None:
|
| 691 | self.not_translated(o, 'namedtuple')
|
| 692 |
|
| 693 | def visit_enum_call_expr(self, o: 'mypy.nodes.EnumCallExpr') -> None:
|
| 694 | self.not_translated(o, 'enum')
|
| 695 |
|
| 696 | def visit_typeddict_expr(self, o: 'mypy.nodes.TypedDictExpr') -> None:
|
| 697 | self.not_translated(o, 'typed dict')
|
| 698 |
|
| 699 | def visit_newtype_expr(self, o: 'mypy.nodes.NewTypeExpr') -> None:
|
| 700 | self.not_translated(o, 'newtype')
|
| 701 |
|
| 702 | def visit__promote_expr(self, o: 'mypy.nodes.PromoteExpr') -> None:
|
| 703 | self.not_translated(o, 'promote')
|
| 704 |
|
| 705 | def visit_await_expr(self, o: 'mypy.nodes.AwaitExpr') -> None:
|
| 706 | self.not_translated(o, 'await')
|
| 707 |
|
| 708 | def visit_temp_node(self, o: 'mypy.nodes.TempNode') -> None:
|
| 709 | self.not_translated(o, 'temp')
|
| 710 |
|
| 711 |
|
| 712 | class TypedVisitor(SimpleVisitor):
|
| 713 | """Base class for visitors that need type info."""
|
| 714 |
|
| 715 | def __init__(self, types: Dict[Expression, Type]) -> None:
|
| 716 | SimpleVisitor.__init__(self)
|
| 717 | self.types = types
|
| 718 |
|
| 719 | def oils_visit_op_expr(self, o: 'mypy.nodes.OpExpr') -> None:
|
| 720 | self.accept(o.left)
|
| 721 | self.accept(o.right)
|
| 722 |
|
| 723 | def oils_visit_format_expr(self, left: Expression,
|
| 724 | right: Expression) -> None:
|
| 725 | """ mystr % x mystr % (x, y) """
|
| 726 | self.accept(left)
|
| 727 | self.accept(right)
|
| 728 |
|
| 729 | def visit_op_expr(self, o: 'mypy.nodes.OpExpr') -> None:
|
| 730 | if o.op == '%' and util.IsStr(self.types[o.left]):
|
| 731 | # 'x = %r' % x
|
| 732 | self.oils_visit_format_expr(o.left, o.right)
|
| 733 | return
|
| 734 |
|
| 735 | # Any other expression
|
| 736 | self.oils_visit_op_expr(o)
|