9811353abf
Convert each Entity to ObjectEntity at the end of each scope. Add `ConvertToObjectEntity()` to achieve this, similar to `ConvertToProcEntity()`. Move them both up into `ScopeHandler` because they need to be called from `PopScope()`. In a proc-decl, only mark the proc as a function if it has a return type. If no return type is declared, function vs. subroutine is determined by: - for a module it is a subroutine (at end of specification-part) - otherwise it is by usage If an entity that could otherwise be a function is used as the base of a structure component, that forces it to be an object. Because we have to change it to an object entity at that point, the `base` in `FindComponent()` can't be const, and that propagates to all of its callers. Remove the name argument to `ApplyImplicitRules` as it is unneeded. Fixes flang-compiler/f18#191. Original-commit: flang-compiler/f18@9bd8bf7c37 Reviewed-on: https://github.com/flang-compiler/f18/pull/194 Tree-same-pre-rewrite: false
78 lines
1.9 KiB
Fortran
78 lines
1.9 KiB
Fortran
! Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved.
|
|
!
|
|
! Licensed under the Apache License, Version 2.0 (the "License");
|
|
! you may not use this file except in compliance with the License.
|
|
! You may obtain a copy of the License at
|
|
!
|
|
! http://www.apache.org/licenses/LICENSE-2.0
|
|
!
|
|
! Unless required by applicable law or agreed to in writing, software
|
|
! distributed under the License is distributed on an "AS IS" BASIS,
|
|
! WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
! See the License for the specific language governing permissions and
|
|
! limitations under the License.
|
|
|
|
integer :: y
|
|
procedure() :: a
|
|
procedure(real) :: b
|
|
call a ! OK - can be function or subroutine
|
|
!ERROR: Cannot call subroutine 'a' like a function
|
|
c = a()
|
|
!ERROR: Cannot call function 'b' like a subroutine
|
|
call b
|
|
!ERROR: Cannot call function 'y' like a subroutine
|
|
call y
|
|
call x
|
|
!ERROR: Cannot call subroutine 'x' like a function
|
|
z = x()
|
|
end
|
|
|
|
subroutine s
|
|
!ERROR: Cannot call function 'f' like a subroutine
|
|
call f
|
|
!ERROR: Cannot call subroutine 's' like a function
|
|
i = s()
|
|
contains
|
|
function f()
|
|
end
|
|
end
|
|
|
|
subroutine s2
|
|
! subroutine vs. function is determined by use
|
|
external :: a, b
|
|
call a()
|
|
!ERROR: Cannot call subroutine 'a' like a function
|
|
x = a()
|
|
x = b()
|
|
!ERROR: Cannot call function 'b' like a subroutine
|
|
call b()
|
|
end
|
|
|
|
subroutine s3
|
|
! subroutine vs. function is determined by use, even in internal subprograms
|
|
external :: a
|
|
procedure() :: b
|
|
contains
|
|
subroutine s3a()
|
|
x = a()
|
|
call b()
|
|
end
|
|
subroutine s3b()
|
|
!ERROR: Cannot call function 'a' like a subroutine
|
|
call a()
|
|
!ERROR: Cannot call subroutine 'b' like a function
|
|
x = b()
|
|
end
|
|
end
|
|
|
|
module m
|
|
! subroutine vs. function is determined at end of specification part
|
|
external :: a
|
|
procedure() :: b
|
|
contains
|
|
subroutine s()
|
|
call a()
|
|
!ERROR: Cannot call subroutine 'b' like a function
|
|
x = b()
|
|
end
|
|
end
|