Function transform_block

mypyc/irbuild/statement.py:137–155

(builder: IRBuilder, block: Block)

def transform_block(builder: IRBuilder, block: Block) -> None:
    if not block.is_unreachable:
        builder.block_reachable_stack.append(True)
        for stmt in block.body:
            builder.accept(stmt)
            if not builder.block_reachable_stack[-1]:
                # The rest of the block is unreachable, so skip it
                break
        builder.block_reachable_stack.pop()
    # Raise a RuntimeError if we hit a non-empty unreachable block.
    # Don't complain about empty unreachable blocks, since mypy inserts
    # those after `if MYPY`.
    elif block.body:
        builder.add(
            RaiseStandardError(
                RaiseStandardError.RUNTIME_ERROR, "Reached allegedly unreachable code!", block.line
            )
        )
        builder.add(Unreachable())


def transform_expression_stmt(builder: IRBuilder, stmt: ExpressionStmt) -> None: