398 lines
12 KiB
Python
398 lines
12 KiB
Python
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"""Dispatcher used when transforming a mypy AST to the IR form.
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mypyc.irbuild.builder and mypyc.irbuild.main are closely related.
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"""
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from __future__ import annotations
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from typing import NoReturn
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from mypy.nodes import (
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AssertStmt,
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AssertTypeExpr,
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AssignmentExpr,
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AssignmentStmt,
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AwaitExpr,
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Block,
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BreakStmt,
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BytesExpr,
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CallExpr,
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CastExpr,
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ClassDef,
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ComparisonExpr,
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ComplexExpr,
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ConditionalExpr,
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ContinueStmt,
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Decorator,
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DelStmt,
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DictExpr,
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DictionaryComprehension,
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EllipsisExpr,
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EnumCallExpr,
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ExpressionStmt,
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FloatExpr,
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ForStmt,
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FuncDef,
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GeneratorExpr,
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GlobalDecl,
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IfStmt,
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Import,
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ImportAll,
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ImportFrom,
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IndexExpr,
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IntExpr,
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LambdaExpr,
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ListComprehension,
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ListExpr,
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MatchStmt,
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MemberExpr,
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MypyFile,
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NamedTupleExpr,
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NameExpr,
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NewTypeExpr,
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NonlocalDecl,
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OperatorAssignmentStmt,
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OpExpr,
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OverloadedFuncDef,
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ParamSpecExpr,
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PassStmt,
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PromoteExpr,
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RaiseStmt,
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ReturnStmt,
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RevealExpr,
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SetComprehension,
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SetExpr,
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SliceExpr,
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StarExpr,
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StrExpr,
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SuperExpr,
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TempNode,
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TryStmt,
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TupleExpr,
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TypeAliasExpr,
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TypeApplication,
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TypedDictExpr,
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TypeVarExpr,
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TypeVarTupleExpr,
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UnaryExpr,
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Var,
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WhileStmt,
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WithStmt,
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YieldExpr,
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YieldFromExpr,
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)
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from mypyc.ir.ops import Value
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from mypyc.irbuild.builder import IRBuilder, IRVisitor, UnsupportedException
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from mypyc.irbuild.classdef import transform_class_def
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from mypyc.irbuild.expression import (
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transform_assignment_expr,
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transform_bytes_expr,
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transform_call_expr,
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transform_comparison_expr,
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transform_complex_expr,
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transform_conditional_expr,
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transform_dict_expr,
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transform_dictionary_comprehension,
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transform_ellipsis,
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transform_float_expr,
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transform_generator_expr,
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transform_index_expr,
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transform_int_expr,
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transform_list_comprehension,
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transform_list_expr,
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transform_member_expr,
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transform_name_expr,
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transform_op_expr,
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transform_set_comprehension,
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transform_set_expr,
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transform_slice_expr,
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transform_str_expr,
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transform_super_expr,
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transform_tuple_expr,
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transform_unary_expr,
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)
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from mypyc.irbuild.function import (
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transform_decorator,
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transform_func_def,
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transform_lambda_expr,
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transform_overloaded_func_def,
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)
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from mypyc.irbuild.statement import (
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transform_assert_stmt,
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transform_assignment_stmt,
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transform_await_expr,
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transform_block,
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transform_break_stmt,
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transform_continue_stmt,
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transform_del_stmt,
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transform_expression_stmt,
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transform_for_stmt,
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transform_if_stmt,
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transform_import,
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transform_import_all,
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transform_import_from,
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transform_match_stmt,
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transform_operator_assignment_stmt,
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transform_raise_stmt,
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transform_return_stmt,
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transform_try_stmt,
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transform_while_stmt,
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transform_with_stmt,
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transform_yield_expr,
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transform_yield_from_expr,
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)
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class IRBuilderVisitor(IRVisitor):
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"""Mypy node visitor that dispatches to node transform implementations.
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This class should have no non-trivial logic.
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This visitor is separated from the rest of code to improve modularity and
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to avoid import cycles.
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This is based on the visitor pattern
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(https://en.wikipedia.org/wiki/Visitor_pattern).
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"""
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# This gets passed to all the implementations and contains all the
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# state and many helpers. The attribute is initialized outside
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# this class since this class and IRBuilder form a reference loop.
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builder: IRBuilder
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def visit_mypy_file(self, mypyfile: MypyFile) -> None:
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assert False, "use transform_mypy_file instead"
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def visit_class_def(self, cdef: ClassDef) -> None:
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transform_class_def(self.builder, cdef)
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def visit_import(self, node: Import) -> None:
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transform_import(self.builder, node)
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def visit_import_from(self, node: ImportFrom) -> None:
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transform_import_from(self.builder, node)
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def visit_import_all(self, node: ImportAll) -> None:
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transform_import_all(self.builder, node)
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def visit_func_def(self, fdef: FuncDef) -> None:
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transform_func_def(self.builder, fdef)
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def visit_overloaded_func_def(self, o: OverloadedFuncDef) -> None:
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transform_overloaded_func_def(self.builder, o)
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def visit_decorator(self, dec: Decorator) -> None:
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transform_decorator(self.builder, dec)
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def visit_block(self, block: Block) -> None:
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transform_block(self.builder, block)
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# Statements
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def visit_expression_stmt(self, stmt: ExpressionStmt) -> None:
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transform_expression_stmt(self.builder, stmt)
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def visit_return_stmt(self, stmt: ReturnStmt) -> None:
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transform_return_stmt(self.builder, stmt)
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def visit_assignment_stmt(self, stmt: AssignmentStmt) -> None:
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transform_assignment_stmt(self.builder, stmt)
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def visit_operator_assignment_stmt(self, stmt: OperatorAssignmentStmt) -> None:
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transform_operator_assignment_stmt(self.builder, stmt)
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def visit_if_stmt(self, stmt: IfStmt) -> None:
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transform_if_stmt(self.builder, stmt)
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def visit_while_stmt(self, stmt: WhileStmt) -> None:
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transform_while_stmt(self.builder, stmt)
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def visit_for_stmt(self, stmt: ForStmt) -> None:
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transform_for_stmt(self.builder, stmt)
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def visit_break_stmt(self, stmt: BreakStmt) -> None:
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transform_break_stmt(self.builder, stmt)
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def visit_continue_stmt(self, stmt: ContinueStmt) -> None:
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transform_continue_stmt(self.builder, stmt)
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def visit_raise_stmt(self, stmt: RaiseStmt) -> None:
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transform_raise_stmt(self.builder, stmt)
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def visit_try_stmt(self, stmt: TryStmt) -> None:
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transform_try_stmt(self.builder, stmt)
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def visit_with_stmt(self, stmt: WithStmt) -> None:
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transform_with_stmt(self.builder, stmt)
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def visit_pass_stmt(self, stmt: PassStmt) -> None:
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pass
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def visit_assert_stmt(self, stmt: AssertStmt) -> None:
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transform_assert_stmt(self.builder, stmt)
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def visit_del_stmt(self, stmt: DelStmt) -> None:
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transform_del_stmt(self.builder, stmt)
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def visit_global_decl(self, stmt: GlobalDecl) -> None:
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# Pure declaration -- no runtime effect
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pass
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def visit_nonlocal_decl(self, stmt: NonlocalDecl) -> None:
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# Pure declaration -- no runtime effect
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pass
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def visit_match_stmt(self, stmt: MatchStmt) -> None:
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transform_match_stmt(self.builder, stmt)
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# Expressions
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def visit_name_expr(self, expr: NameExpr) -> Value:
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return transform_name_expr(self.builder, expr)
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def visit_member_expr(self, expr: MemberExpr) -> Value:
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return transform_member_expr(self.builder, expr)
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def visit_super_expr(self, expr: SuperExpr) -> Value:
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return transform_super_expr(self.builder, expr)
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def visit_call_expr(self, expr: CallExpr) -> Value:
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return transform_call_expr(self.builder, expr)
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def visit_unary_expr(self, expr: UnaryExpr) -> Value:
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return transform_unary_expr(self.builder, expr)
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def visit_op_expr(self, expr: OpExpr) -> Value:
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return transform_op_expr(self.builder, expr)
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def visit_index_expr(self, expr: IndexExpr) -> Value:
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return transform_index_expr(self.builder, expr)
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def visit_conditional_expr(self, expr: ConditionalExpr) -> Value:
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return transform_conditional_expr(self.builder, expr)
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def visit_comparison_expr(self, expr: ComparisonExpr) -> Value:
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return transform_comparison_expr(self.builder, expr)
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def visit_int_expr(self, expr: IntExpr) -> Value:
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return transform_int_expr(self.builder, expr)
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def visit_float_expr(self, expr: FloatExpr) -> Value:
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return transform_float_expr(self.builder, expr)
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def visit_complex_expr(self, expr: ComplexExpr) -> Value:
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return transform_complex_expr(self.builder, expr)
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def visit_str_expr(self, expr: StrExpr) -> Value:
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return transform_str_expr(self.builder, expr)
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def visit_bytes_expr(self, expr: BytesExpr) -> Value:
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return transform_bytes_expr(self.builder, expr)
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def visit_ellipsis(self, expr: EllipsisExpr) -> Value:
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return transform_ellipsis(self.builder, expr)
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def visit_list_expr(self, expr: ListExpr) -> Value:
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return transform_list_expr(self.builder, expr)
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def visit_tuple_expr(self, expr: TupleExpr) -> Value:
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return transform_tuple_expr(self.builder, expr)
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def visit_dict_expr(self, expr: DictExpr) -> Value:
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return transform_dict_expr(self.builder, expr)
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def visit_set_expr(self, expr: SetExpr) -> Value:
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return transform_set_expr(self.builder, expr)
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def visit_list_comprehension(self, expr: ListComprehension) -> Value:
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return transform_list_comprehension(self.builder, expr)
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def visit_set_comprehension(self, expr: SetComprehension) -> Value:
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return transform_set_comprehension(self.builder, expr)
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def visit_dictionary_comprehension(self, expr: DictionaryComprehension) -> Value:
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return transform_dictionary_comprehension(self.builder, expr)
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def visit_slice_expr(self, expr: SliceExpr) -> Value:
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return transform_slice_expr(self.builder, expr)
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def visit_generator_expr(self, expr: GeneratorExpr) -> Value:
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return transform_generator_expr(self.builder, expr)
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def visit_lambda_expr(self, expr: LambdaExpr) -> Value:
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return transform_lambda_expr(self.builder, expr)
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def visit_yield_expr(self, expr: YieldExpr) -> Value:
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return transform_yield_expr(self.builder, expr)
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def visit_yield_from_expr(self, o: YieldFromExpr) -> Value:
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return transform_yield_from_expr(self.builder, o)
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def visit_await_expr(self, o: AwaitExpr) -> Value:
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return transform_await_expr(self.builder, o)
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def visit_assignment_expr(self, o: AssignmentExpr) -> Value:
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return transform_assignment_expr(self.builder, o)
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# Constructs that shouldn't ever show up
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def visit_enum_call_expr(self, o: EnumCallExpr) -> Value:
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assert False, "can't compile analysis-only expressions"
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def visit__promote_expr(self, o: PromoteExpr) -> Value:
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assert False, "can't compile analysis-only expressions"
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def visit_namedtuple_expr(self, o: NamedTupleExpr) -> Value:
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assert False, "can't compile analysis-only expressions"
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def visit_newtype_expr(self, o: NewTypeExpr) -> Value:
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assert False, "can't compile analysis-only expressions"
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def visit_temp_node(self, o: TempNode) -> Value:
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assert False, "can't compile analysis-only expressions"
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def visit_type_alias_expr(self, o: TypeAliasExpr) -> Value:
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assert False, "can't compile analysis-only expressions"
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def visit_type_application(self, o: TypeApplication) -> Value:
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assert False, "can't compile analysis-only expressions"
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def visit_type_var_expr(self, o: TypeVarExpr) -> Value:
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assert False, "can't compile analysis-only expressions"
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def visit_paramspec_expr(self, o: ParamSpecExpr) -> Value:
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assert False, "can't compile analysis-only expressions"
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def visit_type_var_tuple_expr(self, o: TypeVarTupleExpr) -> Value:
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assert False, "can't compile analysis-only expressions"
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def visit_typeddict_expr(self, o: TypedDictExpr) -> Value:
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assert False, "can't compile analysis-only expressions"
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def visit_reveal_expr(self, o: RevealExpr) -> Value:
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assert False, "can't compile analysis-only expressions"
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def visit_var(self, o: Var) -> None:
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assert False, "can't compile Var; should have been handled already?"
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def visit_cast_expr(self, o: CastExpr) -> Value:
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assert False, "CastExpr should have been handled in CallExpr"
|
||
|
|
|
||
|
|
def visit_assert_type_expr(self, o: AssertTypeExpr) -> Value:
|
||
|
|
assert False, "AssertTypeExpr should have been handled in CallExpr"
|
||
|
|
|
||
|
|
def visit_star_expr(self, o: StarExpr) -> Value:
|
||
|
|
assert False, "should have been handled in Tuple/List/Set/DictExpr or CallExpr"
|
||
|
|
|
||
|
|
# Helpers
|
||
|
|
|
||
|
|
def bail(self, msg: str, line: int) -> NoReturn:
|
||
|
|
"""Reports an error and aborts compilation up until the last accept() call
|
||
|
|
|
||
|
|
(accept() catches the UnsupportedException and keeps on
|
||
|
|
processing. This allows errors to be non-blocking without always
|
||
|
|
needing to write handling for them.
|
||
|
|
"""
|
||
|
|
self.builder.error(msg, line)
|
||
|
|
raise UnsupportedException()
|