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(#24219)
Previously, the compiler never differentiated between `untyped`/`typed`
argument default values and other types, it considered any parameter
with a type as typed and called `semExprWithType`, which both
typechecked it and disallowed `void` expressions. Now, we perform no
typechecking at all on `untyped` template param default values, and call
`semExpr` instead for `typed` params, which allows expressions with
`void` type.
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fixes #19866 given #23997
When searching for a module-qualified symbol, `qualifiedLookUp` tries to
obtain the raw identifier from the RHS of the dot field. However it only
does this when the RHS is either an `nkIdent` or an `nkAccQuoted` node,
not when the node is a resolved symbol or a symchoice, such as in
templates and generics when the module symbol can't be resolved yet.
Since the LHS is a module symbol when the compiler checks for this, any
resolved symbol information doesn't matter, since it has to be a member
of the module. So we now obtain the identifier from these nodes as well
as the unresolved identifier nodes.
The test is a bit niche and possibly not officially supported, but this
is likely a more general problem and I just couldn't think of another
test that would be more "proper". It's better than the error message
`'a' has no type` at least.
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fixes #19277, refs #24169, refs #18124
When pragmas are pushed to a routine, if the routine symbol AST isn't
nil by the time the pushed pragmas are being processed, the pragmas are
implicitly added to the symbol AST. However this is done without
restriction on the pragma, if the pushed pragma isn't supposed to apply
to the routine, it's still added to the routine. This is why the symbol
AST for templates wasn't set before the pushed pragma processing in
#18124. Now, the pragmas added to the AST are restricted to ones that
apply to the given routine. This means we can set the template symbol
AST earlier so that the pragmas get added to the template AST.
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(#24111)
alternative to #24101
#23892 changed the opensym experimental switch so that it has to be
enabled in the context of the generic/template declarations capturing
the symbols, not the context of the instantiation of the
generics/templates. This was to be in line with where the compiler gives
the warnings and changes behavior in a potentially breaking way.
However `results` [depends on the old
behavior](https://github.com/arnetheduck/nim-results/blob/71d404b314479a6205bfd050f4fe5fe49cdafc69/results.nim#L1428),
so that the callers of the macros provided by results always take
advantage of the opensym behavior. To accomodate this, we change the
behavior of the old experimental option that `results` uses,
`genericsOpenSym`, so that ignores the information of whether or not
symbols are intentionally opened and always gives the opensym behavior
as long as it's enabled at instantiation time. This should keep
`results` working as is. However this differs from the normal opensym
switch in that it doesn't generate `nnkOpenSym`.
Before it was just a generics-only version of `openSym` along with
`templateOpenSym` which was only for templates. So `templateOpenSym` is
removed along with this change, but no one appears to have used it.
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fixes #24112
Sym nodes in templates that could be open are [given `nil`
type](https://github.com/nim-lang/Nim/blob/22d2cf217597468ace8ba540d6990b1f6d8a816a/compiler/semtempl.nim#L274)
when `--experimentalOpenSym` is disabled so that they can be semchecked
to give a warning since #24007. The first nodes of object constructors
(in this case) and in type conversions don't replace their first node
(the symbol) with a typechecked one, they only call `semTypeNode` on it
and leave it as is.
Effect tracking checks if the type of a sym node has a destructor to
check if the node type should be replaced with the sym type. But this
causes a segfault when the type of the node is nil. To fix this, we
always set the node type to the sym type if the node type is nil.
Alternatively `semObjConstr` and `semConv` could be changed to set the
type of their first node to the found type but I'm not sure if this
would break anything. They could call `semExprWithType` on the first
node but `semTypeNode` would still have to be called (maybe call it
before?). This isn't a problem if the sym node has a type but is just
nested in `nkOpenSym` or `nkOpenSymChoice` which have nil type instead
(i.e. with openSym enabled), so maybe this still is the "most general"
solution, I don't know.
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fixes #23506
#24065 broke compilation of template parameter default values that
depended on other template parameters. But this was never implemented
anyway, actually attempting to use those default values breaks the
compiler as in #23506. So these are now implemented as well as fixing
the regression.
First, if a default value expression uses any unresolved arguments
(generic or normal template parameters) in a template header, we leave
it untyped, instead of applying the generic typechecking (fixing the
regression). Then, just before the body of the template is about to be
explored, the default value expressions are handled in the same manner
as the body as well. This captures symbols including the parameters, so
the expression is checked again if it contains a parameter symbol, and
marked with `nfDefaultRefsParam` if it does (as an optimization to not
check it later).
Then when the template is being evaluated, when substituting a
parameter, if we try to substitute with a node marked
`nfDefaultRefsParam`, we also evaluate it as we would the template body
instead of passing it as just a copy (the reason why it never worked
before). This way we save time if a default value doesn't refer to
another parameter and could just be copied regardless.
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fixes #15314, fixes #24002
The OpenSym behavior first added to generics in #23091 now also applies
to templates, since templates can also capture symbols that are meant to
be replaced by local symbols if the context imports symbols with the
same name, as in the issue #24002. The experimental switch
`templateOpenSym` is added to enable this behavior for templates only,
and the experimental switch `openSym` is added to enable it for both
templates and generics, and the documentation now mainly mentions this
switch.
Additionally the logic for `nkOpenSymChoice` nodes that were previously
wrapped in `nkOpenSym` now apply to all `nkOpenSymChoice` nodes, and so
these nodes aren't wrapped in `nkOpenSym` anymore. This means
`nkOpenSym` can only have children of kind `nkSym` again, so it is more
in line with the structure of symchoice nodes. As for why they aren't
merged with `nkOpenSymChoice` nodes yet, we need some way to signal that
the node shouldn't become ambiguous if other options exist at
instantiation time, we already captured a symbol at the beginning and
another symbol can only replace it if it's closer in scope and
unambiguous.
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fixes #23813, partially reverts #23392
Before #23392, if a `gensym` symbol was defined before a proc with the
same name in a template even with an `inject` annotation, the proc would
be `gensym`. After #23392 the proc was instead changed to be `inject` as
long as no `gensym` annotation was given. Now, to keep compatibility
with the old behavior, the behavior is changed back to infer the proc as
`gensym` when no `inject` annotation is given, however an explicit
`inject` annotation will still inject the proc. This is also documented
in the manual as the old behavior was undocumented and the new behavior
is slightly different.
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closes #13426
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fixes #23326
In a routine declaration node in a template, if the routine is marked as
`gensym`, the compiler adds it as a new symbol to a preliminary scope of
the template. If it's not marked as gensym, then it searches the
preliminary scope of the template for the name of the routine, then when
it matches a template parameter or a gensym identifier, the compiler
replaces the name node with a symbol node of the found symbol.
This makes sense for the template parameter since it has to be replaced
later, but not really for the gensym identifier, as it doesn't allow us
to inject a routine with the same name as an identifier previously
declared as gensym (the problem in #23326 is when this is in another
`when` branch).
However this is the only channel to reuse a gensym symbol in a
declaration, so maybe removing it has side effects. For example if we
have:
```nim
proc foo(x: int) {.gensym.} = discard
proc foo(x: float) {.gensym.} = discard
```
it will not behave the same as
```nim
proc foo(x: int) {.gensym.} = discard
proc foo(x: float) = discard
```
behaved previously, which maybe allowed overloading over the gensym'd
symbols.
A note to the "undeclared identifier" error message has also been added
for a potential error code that implicitly depended on the old behavior
might give, namely ``undeclared identifier: 'abc`gensym123'``, which
happens when in a template an identifier is first declared gensym in
code that doesn't compile, then as a routine which injects by default,
then the identifier is used.
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closes #22846
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fixes #22775
It's pre-existing that [`prepareOperand` doesn't typecheck expressions
which have
types](https://github.com/nim-lang/Nim/blob/a4f3bf374238df96f0982b7106e3702da6b485b1/compiler/sigmatch.nim#L2444).
Templates can take typed subscript expressions, transform them into
calls to `[]`, and then have this `[]` not be resolved later if the
expression is nested inside of a call argument, which leaks an untyped
expression past semantic analysis. To prevent this, don't transform any
typed subscript expressions into calls to `[]` in templates. Ditto for
curly subscripts (with `{}`) and assignments to subscripts and curly
subscripts (with `[]=` and `{}=`).
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closes #8390, closes #11726, closes #8446, closes #21221, closes #7461,
closes #7995
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* correct logic for qualified symbol in templates
fixes #19865
* add test
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* test case haul for old generic/template/macro issues
closes #12582, closes #19552, closes #2465, closes #4596, closes #15246,
closes #12683, closes #7889, closes #4547, closes #12415, closes #2002,
closes #1771, closes #5121
The test for #5648 is also moved into its own test
from `types/tissues_types` due to not being joinable.
* fix template gensym test
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* fix generic param substitution in templates
fixes #13527, fixes #17240, fixes #6340, fixes #20033, fixes #19576, fixes #19076
* fix bare except in test, test updated packages in CI
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* Don't ignore return in semTemplateDef
* Add test
---------
Co-authored-by: SirOlaf <>
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module name specifier (#22109)
* fixes #21231; template with module as parameter elides usage/checking of module name specifier
* add a test case
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add test to close #7223, close #11733
closes #7223, closes #11733, were fixed by #22076
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* consider object types as declarative in templates
fixes #16005
* correct logic for nkRecList children, inject fields
* don't actually inject fields
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* fix dot calls with resolved symbols in templates
* make old code work
* fix custom number literals test
* remove leftover debug marker
* enable "bug 9" test too
* fix renderer, add test for #7085
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* clean up some test categories
* mention exact slice issue
* magics into system
* move trangechecks into overflow
* move tmemory to system
* try fix CI
* try fix CI
* final CI fix
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fixes #21920
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* alias syntax fixes, improvements and tests
* even better, cannot use alias syntax with generics
* more type tests, improve comment
* fix again
* consistent error message + make t5167_5 work
* more comments, remove {.noalias.}
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* document general use of `_`, error message, fixes
fixes #20687, fixes #21435
Documentation and changelog updated to clarify new universal behavior
of `_`. Also new error message for attempting to use `_`, new tests,
and fixes with overloadable symbols and
implicit generics.
* add test for #21435
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* test disable do: block lambda lifting
* fix last test [skip ci]
* deprecate `do:` meaning `do ():` + misc cleanup
closes https://github.com/nim-lang/RFCs/issues/486
* oops
* fix
* no idea what could be causing nimsuggest failure other than this
* ensure ci works
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* fix #19149 Invalid codegen when returning var tuple from a template
* fix type
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* test qualifiedLookUp in templates
* check later
* add testcase
* add 4errormsg
* Update tests/template/m1027a.nim
Co-authored-by: Clay Sweetser <Varriount@users.noreply.github.com>
* Update tests/template/m1027b.nim
Co-authored-by: Clay Sweetser <Varriount@users.noreply.github.com>
Co-authored-by: Andreas Rumpf <rumpf_a@web.de>
Co-authored-by: Clay Sweetser <Varriount@users.noreply.github.com>
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(#20578)
* Handle nkOpenSymChoice for nkAccQuoted in considerQuotedIdent
* Add test
* Update compiler/lookups.nim
Co-authored-by: SirOlaf <a>
Co-authored-by: Andreas Rumpf <rumpf_a@web.de>
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fix nim-lang#19700 Crash when passing a template to a generic function expecting a procedure
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* pragma for sfCallsite instead of name check at every template definition
Not documented because it seems to be for internal use?
Should also make it possible to make comparisons and setops imports, but this doesn't have to be done.
I can reuse a name like `cursor` for the pragma as well, added a new name just to be safe.
* make sfCallsite recursive, add tests
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* defaults to Orc
* bootstrap using refc
* use gc
* init orc defines
* unregister orc
* fix gc
* fix commands
* add prepareMutation for orc
* enable deepcopy for orc
* prepareMutation
* more fixes
* some cases
* bug #20081
* partial fixes
* partial fixes
* fixes command line
* more fixes
* build Nim with refc
* use gc
* more fixes
* rstore
* orc doesn't support threadpool
* more shallowCopy
* more fixes
* fixes unsafeNew
* workarounds
* small
* more fixes
* fixes some megatest
* tcodegenbugs1 refc
* fxies megatest
* build nimble with refc
* workaround tensordsl tests
* replace shallowCopy with move
* fixes action
* workaround
* add todo
* fixes important packages
* unpublic unregisterArcOrc
* fixes cpp
* enable windows
Co-authored-by: xflywind <43030857+xflywind@users.noreply.github.com>
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* fix #13515
* only compile test
* no idea why this PR is unlocking this
* don't rope in symchoices
* even more restrictive
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* test CI for template redefinitions
* adapt asyncmacro
* fix quote
* fix again
* try something else
* revert
* fix ioselectors_select, disable packages CI
* adapt more tests & simplify
* more
* more
* more
* rename to redefine, warn on implicit redefinition
* basic documentation [skip ci]
* Update compiler/lineinfos.nim
Co-authored-by: konsumlamm <44230978+konsumlamm@users.noreply.github.com>
Co-authored-by: konsumlamm <44230978+konsumlamm@users.noreply.github.com>
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While this fix seems innocent,
this unlocks the hidden behavior of
method calls not being able to call
gensym'ed routines inside templates.
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* fix term rewriting with sideeffect
fix #6217
* add tests
* Update tests/template/template_various.nim
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* style usages (openArray)
* revert doc changes
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* silence error output from template_various.nim
* any => auto in tests
* avoid showing failed for parseSpec since this is expected behavior in 2 cases: tincludefile.nim, tnav1.nim
* enforce InheritFromException
* fixup
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- use `doAssert` in t17433
- use setGenericParamsMisc in semTemplateDef akin to semProcAux
- pragma handling in semTemplateDef inline with semProcAux
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