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##[
Utilities related to import and symbol resolution.
Experimental API, subject to change.
]##
#[
Possible future APIs:
* module symbols (https://github.com/nim-lang/Nim/pull/9560)
* whichModule (subsumes canImport / moduleExists) (https://github.com/timotheecour/Nim/issues/376)
* getCurrentPkgDir (https://github.com/nim-lang/Nim/pull/10530)
* import from a computed string + related APIs (https://github.com/nim-lang/Nim/pull/10527)
]#
when defined(nimImportutilsExample):
type
Foo = object
f0: int # private
Goo*[T] = object
g0: int # private
proc initFoo*(): auto = Foo()
proc privateAccess*(t: typedesc) {.magic: "PrivateAccess".} =
## Enables access to private fields of `t` in current scope.
runnableExamples("-d:nimImportutilsExample"):
# here we're importing a module containing:
# type
# Foo = object
# f0: int # private
# Goo*[T] = object
# g0: int # private
# proc initFoo*(): auto = Foo()
var f = initFoo()
block:
assert not compiles(f.f0)
privateAccess(f.type)
f.f0 = 1 # accessible in this scope
block:
assert f.f0 == 1 # still in scope
assert not compiles(f.f0)
# this also works with generics
privateAccess(Goo)
assert Goo[float](g0: 1).g0 == 1
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