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nseval 0.5.2 (release date: 2023-07-01)

Fixes:

  • In preparation for normalization of an official R API, references to non-API functions DDVAL, Rf_findVarInFrame3, SET_TYPEOF, SET_BODY, SET_FORMALS and SET_CLOENV have been removed. The calls to PROMSXP accessor functions remain, as they are central to this package's purpose and it is not yet clear what the official API will have in their place.

nseval 0.5.1 (release date: 2023-12-11)

Fixes:

  • Fix issues raised by CRAN:
    • Always cast argument of printf("%p", ...) to (void *)

nseval 0.5

Changes

  • The representation of quotations has been changed. Quotations are now represented as expressions with a class attribute. This means that you can eval a quotation and it will return the same value that a promise would return when forced. This also means that you can bquote or substitute to place a quotation into an expression, and the resulting expression will evaluate hygienically.
  • The better to support hygiene, arg* will check if there a quotation in the argument expression (as it would be if the call had been done with bquote) and transparently unwrap it.
  • Added method is_forced_.name.
  • Added arg_value to peek at values of promises (without forcing).
  • Added as.quo conversion methods for formulas and rlang quosures.

Fixes:

  • Added some support for "weird" promises. These are created by primitive s3 methods dispatched from a generic like c. These promises are forced (have a value, which was dispatched from) but still have an environment.

nseval 0.4.3

Fixes

  • Added memory protection calls where identified by rchk.
  • Comply with -Wstrict-prototypes.

nseval 0.4.2

Changes

  • Implemented all.equal method for quotation objects.
  • dots and quotation objects now print themselves in a deparse()-like style.
  • is_*_() functions how have methods for promises/dots.
  • set_ and set_enclos_ are added to help with making assignments.

Fixes

  • Fixed handling of missing arguments in do and quo.
  • do now passes arguments via a temporary binding of ... in some cases. This should fix some cases where sys.calls() returned naked promises, which made for confusing debugging. For R versions before 4.0 the old behavior is retained.
  • Fixed man pages which were not generated completely.
  • locate(fn, mode="function") now works in the case where fn is a forced promise containing a function.

nseval 0.4.1

Fixes

  • caller now correctly returns its ifnotfound argument.

nseval 0.4

Initial CRAN Release.