A symbol for a common block has `CommonBlockDetails` which contains
a list of the symbols that are in the common block.
The name of the symbol for the blank common block is the empty string.
That preserves the property that every symbol name is a substring of
the cooked source. We use the 0-length substring starting at the COMMON
statement so that when symbols are sorted by the location of the start
of the name it ends up in the right place.
Some of the checks on members of common blocks don't happen until the
end of the scope. They can't happen earlier because we don't necessarily
know the type and attributes.
Enhance `test_errors.sh` so that multiple errors can be expected for
a single line.
Original-commit: flang-compiler/f18@2c4ca6b5d3
Reviewed-on: https://github.com/flang-compiler/f18/pull/286
When an association selector is an expression, we get the type of the
associate-name from the type of the expression. If that is a derived
type, we were failing to get the derived type scope in copy of the
type that was made. That meant the component names were not resolved.
The fix is to copy the scope in the copy and move constructors of
`DerivedTypeSpec`. As a result, `DerivedTypeSpec::Instantiate` cannot
assume that the `scope_` is not set.
Original-commit: flang-compiler/f18@79eaa8c47f
Reviewed-on: https://github.com/flang-compiler/f18/pull/281
Tree-same-pre-rewrite: false
When the kind parameter is a constant name, that name must be resolved.
Add `CheckIntrinsicKind` and `CheckIntrinsicSize` for common checking of
valid intrinsic kinds. Previous we had different forms of the error
message depending on the context ( "unsupported INTEGER(KIND=47)" and
"INTEGER(KIND=47) is not a supported type").
Report error for parameters without initialization where are they
declared (in `Post(EntityDecl)`) rather than where they are referenced
(in `AnalyzeExpr`).
Remove error message from `AnalyzeKindParam`: `AnalyzeExpr` will report
the error (e.g. not integer, not constant, etc.).
Remove "name was not resolved" error from `AnalyzeExpr`: it should be
reported by name resolution.
Original-commit: flang-compiler/f18@9b0a99ce66
Reviewed-on: https://github.com/flang-compiler/f18/pull/281
Tree-same-pre-rewrite: false
Enhance `FindInTypeOrParents()` to also accept a `parser::Name` argument
and to resolve that name when the symbol is found. This causes binding
names in type-bound generic statements to be resolved. Move this process
to the beginning of the handling of such statements so that they are
resolve even if the generic spec is not and we return early.
Also resolve type parameter keywords in derived type specs
(e.g. `k` in `type(k=1) :: x`). That involves collecting and searching
the symbols of the `TypeParamDetails` to match the name with the symbol.
Original-commit: flang-compiler/f18@7387fb436d
Reviewed-on: https://github.com/flang-compiler/f18/pull/281
Tree-same-pre-rewrite: false
Handle variables in data statements differently from implied dos:
If a variable is first mentioned in a data statement, it is implicitly
declared in the current scope (and subsequent type declarations only
confirm the type).
In the implied do case, the only variables that can be implicitly
declared are the iteration variables. They must be created in the new
ImpliedDos scope. There must be one such scope for each data-stmt-object
because the variable name can be reused.
Resolve references to named constants, e.g. in complex-literal-constant
and data-stmt-value. This requires changing the handling of
named-constant-def as that is a definition, not a reference.
Original-commit: flang-compiler/f18@9952b56af0
Reviewed-on: https://github.com/flang-compiler/f18/pull/277
Tree-same-pre-rewrite: false
Namelist groups are represents by symbols with `NamelistDetails`.
Those contain a list of symbols representing the objects in the group.
References to namelist groups in io-control-spec are resolved.
In `.mod` files, namelist groups are written out at the end of the
module specification section. This is so that the declarations of the
objects in the namelist group appear before they are referenced.
Original-commit: flang-compiler/f18@8b70dbcac7
Reviewed-on: https://github.com/flang-compiler/f18/pull/277
Tree-same-pre-rewrite: false
remove needless template<> on some function overloads
dodge bogus compiler warning from gcc 8.1.0 only
stricter typing of expressions in symbols
adjust modfile12.f90 expected test results
add Unwrap, massage folding a bit
Use Unwrap to simplify folding
Move KindSelector analysis into expression semantics
fix crash
checkpoint
updates to TypeParamInquiry
support of %KIND type parameter inquiry
equality testing for expressions
checkpoint during PDT implementation
reformat
checkpoint derived type instantiation
checkpoint
resolve merge
debugging failed tests
fix failing resolve37.f90 test
all existing tests pass
clean up all build warnings
fix bug
update copyright dates
fix copyright dates
address review comments
review comment
merge with master after peeling off changes
bugfixing new feature
fix warning from old g++s
tweaks after merging with latest head
more bugfixing
making modfile17.f90 test work
Make kinds into expressions in symbol table types
big refactor for deferring kinds in intrinsic types
modfile17.f90 test passes
clean up TODOs
Simplify types as stored in scopes
Test KIND parameter default init expressions, debug them
Update copyright dates
address comments
remove dead line
address comments
Original-commit: flang-compiler/f18@1f43d0a048
Reviewed-on: https://github.com/flang-compiler/f18/pull/260
Tree-same-pre-rewrite: false
We need to be able to analyze the `Variable` in a `Selector` and an
expression. That worked in a previous iteration of `expression.h` by
analyzing each variant of `Variable`.
This fix adds an explicit public function to analyze a Variable and
return a `MaybeExpr`.
Original-commit: flang-compiler/f18@9848a5d48f
Reviewed-on: https://github.com/flang-compiler/f18/pull/262
Create `AssocEntityDetails` for symbols that represent entities
identified by the associate-name in ASSOCIATE and SELECT TYPE
constructs.
For ASSOCIATE, create a new scope for the associated entity.
For SELECT TYPE, create a new scope for each of type guard blocks.
Each one contains an associated entity with the appropriate type.
For SELECT TYPE, also create a place-holder symbol for the
associate-name in the SELECT TYPE statement. The real symbols
are in the new scopes and none of them is uniquely identified
with the associate-name.
Handling of `Selector` is common between these, with
`associate-name => expr | variable` recorded in
`ConstructVisitor::association_`.
When the selector is an expression, derive the type of the associated
entity from the type of the expression. This required some refactoring
of how `DeclTypeSpec`s are created. The `DerivedTypeSpec` that comes
from and expression is const so we can only create const `DeclTypeSpec`s
from it. But there were times during name resolution when we needed to
set type parameters in the current `DeclTypeSpec`. Now the non-const
`DerivedTypeSpec` is saved separately from the const `DeclTypeSpec`
while we are processing a declaration type spec. This makes it
unnecessary to save the derived type name.
Add a type alias for `common::Indirection` to reduce verbosity.
Original-commit: flang-compiler/f18@b7668cebe4
Reviewed-on: https://github.com/flang-compiler/f18/pull/261
Tree-same-pre-rewrite: false
A `part-ref` can be `%kind` on an entity of any intrinsic type or
`%len` on a character entity. During name resolution, recognize these
and don't report an error as if they are component references.
Create symbols for these names as well as `%re` and `%im`. This is
partly for completeness so that we don't get warnings about unresolve
names. It also allows us to avoid having to do string comparisons on
these names in more than one place.
Rework `AnalyzeExpr` on structure components to make use of these
symbols and also not treat `%kind` and `%len` as derived type component
references.
Original-commit: flang-compiler/f18@65ae81ebac
Reviewed-on: https://github.com/flang-compiler/f18/pull/256
If we fail to evaluate the kind expression we were getting an invalid
optional reference. Instead, fail with an assert. This can happen if an
intrinsic function is not folded, but that will be implemented
eventually.
Original-commit: flang-compiler/f18@3bdbfc34bb
Reviewed-on: https://github.com/flang-compiler/f18/pull/256
Tree-same-pre-rewrite: false
