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lionel- merged 10 commits into from
Apr 7, 2026
Merged

Rewrite lazyeval on top of rlang C library and release lazyeval 0.2.3 #110

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f9f12e2
Rewrite lazyeval on top of rlang
lionel- Mar 31, 2026
9dc3608
Update revdeps
lionel- Mar 31, 2026
b36632b
Fail when promise is forced
lionel- Mar 31, 2026
a136bae
Fix environmant of non-promise bindings in `lazy()`
lionel- Mar 31, 2026
ef36896
Fix `expr_find()` tracing through forced promises
lionel- Mar 31, 2026
46d35cf
Fix formatting
lionel- Mar 31, 2026
b3ee94f
Remove dangling `is_lazy_load()` helper
lionel- Mar 31, 2026
5684fea
Fix URLs and other issues
lionel- Apr 3, 2026
28f623e
Rbuildignore dev files
lionel- Apr 3, 2026
5ce65f6
Increment version number to 0.2.3
lionel- Apr 3, 2026
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4 changes: 4 additions & 0 deletions .Rbuildignore
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Expand Up @@ -8,3 +8,7 @@
^\.httr-oauth$
^\.github$
^codecov\.yml$
(^|/)\.clangd$
^\.cache$
^compile_commands\.json$
^dev-notes$
5 changes: 3 additions & 2 deletions DESCRIPTION
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Package: lazyeval
Version: 0.2.2
Version: 0.2.3
Title: Lazy (Non-Standard) Evaluation
Description: An alternative approach to non-standard evaluation using
formulas. Provides a full implementation of LISP style 'quasiquotation',
Expand All @@ -20,4 +20,5 @@ Suggests:
testthat,
covr
VignetteBuilder: knitr
RoxygenNote: 6.1.1
RoxygenNote: 7.3.3
Config/build/compilation-database: true
20 changes: 12 additions & 8 deletions NEWS.md
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# lazyeval 0.2.3

* Fixes for CRAN checks. The new implementation is now compliant with the public C API of R and might differ from the historical one in subtle ways.


# lazyeval 0.2.2

Expand Down Expand Up @@ -25,21 +29,21 @@ Lazyeval has a new system for lazy-eval based on formulas, described in depth i

There are three key components:

* `f_eval()` evaluates a formula in the environment where it was defined.
If supplied, values are first looked for in an optional `data` argument.
* `f_eval()` evaluates a formula in the environment where it was defined.
If supplied, values are first looked for in an optional `data` argument.
Pronouns `.data` and `.env` can be used to resolve ambiguity in this case.
(#43). Longer forms `f_eval_rhs()` and `f_eval_lhs()` emphasise the side
of the formula that you want to evaluate (#64).

* `f_interp()` provides a full quasiquoting system using `uq()` for unquote
and `uqs()` for unquote-splice (#36).

* `f_capture()` and `dots_capture()` make it easy to turn promises
and `...` into explicit formulas. These should be used sparingly, as
generally lazy-eval is preferred to non-standard eval.

* For functions that work with `...`, `f_list()` and `as_f_list()` make it
possible to use the evaluated LHS of a formula to name the elements of a
possible to use the evaluated LHS of a formula to name the elements of a
list (#59).

The core components are accompanied by a number of helper functions:
Expand All @@ -48,12 +52,12 @@ The core components are accompanied by a number of helper functions:

* Create a formula from a quoted call and an environment with `f_new()`.

* "Unwrap" a formula removing one level from the stack of parent environments
* "Unwrap" a formula removing one level from the stack of parent environments
with `f_unwrap()`.

* Get or set either side of a formula with `f_rhs()` or `f_lhs()`, and
the environment with `f_env()`.

* Convert to text/label with `f_text()` and `f_label()`.

I've also added `expr_find()`, `expr_text()` and `expr_label()` explicitly to find the expression associated with a function argument, and label it for output (#58). This is one of the primary uses cases for NSE. `expr_env()` is a similar helper that returns the environment associated with a promise (#67).
Expand Down
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#' Formally, \code{f_interp} is a quasiquote function, \code{uq()} is the
#' unquote operator, and \code{uqs()} is the unquote splice operator.
#' These terms have a rich history in LISP, and live on in modern languages
#' like \href{Julia}{http://docs.julialang.org/en/release-0.1/manual/metaprogramming/}
#' and \href{Racket}{https://docs.racket-lang.org/reference/quasiquote.html}.
#' like Julia and Racket.
#'
#' @param f A one-sided formula.
#' @param x For \code{uq} and \code{uqf}, a formula. For \code{uqs}, a
Expand Down
6 changes: 2 additions & 4 deletions README.md
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# lazyeval

[![Lifecycle: retired](https://img.shields.io/badge/lifecycle-retired-orange.svg)](https://www.tidyverse.org/lifecycle/#retired)
[![Build Status](https://travis-ci.org/hadley/lazyeval.png?branch=master)](https://travis-ci.org/hadley/lazyeval)
[![Coverage Status](http://codecov.io/github/hadley/lazyeval/coverage.svg?branch=master)](http://codecov.io/github/hadley/lazyeval?branch=master)
[![Lifecycle: deprecated](https://img.shields.io/badge/lifecycle-deprecated-orange.svg)](https://lifecycle.r-lib.org/articles/stages.html)

The lazyeval package provides tools that make it easier to correctly implement non-standard evaluation (NSE) in R. You use lazy evaluation by requiring the user to "quote" specially evaluated arguments with `~`, and then using the lazyeval package to compute with those formulas. It is also possible to eliminate the use of the `~` by converting promises to formulas. This does make programming with such functions a little harder, but it can be worth it in certain situations. See `vignette("lazyeval")` for more details.

Expand All @@ -20,6 +18,6 @@ Install the development version from github with:
# install.packages("devtools")
devtools::install_github("hadley/lazyeval", build_vignettes = TRUE)
```
## Status [![Lifecycle: retired](https://img.shields.io/badge/lifecycle-retired-orange.svg)](https://www.tidyverse.org/lifecycle/#retired)
## Status [![Lifecycle: deprecated](https://img.shields.io/badge/lifecycle-deprecated-orange.svg)](https://lifecycle.r-lib.org/articles/stages.html)

lazyeval is retired: this means only changes necessary to keep it on CRAN will be made. We recommend using [rlang](https://rlang.r-lib.org/) instead.
19 changes: 1 addition & 18 deletions cran-comments.md
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This should fix the rchk warnings.

## Test environments

* local OS X install, R-release
* ubuntu 12.04, R 3.1 -> R-devel
* win-builder (R-devel)


## R CMD check results

0 errors | 0 warnings | 0 notes


## revdepcheck results

I haven't checked the reverse dependencies because the only changes are additional `PROTECT()`.
Now compliant with the public C API
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163 changes: 0 additions & 163 deletions revdep/README.md
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# Platform

|field |value |
|:--------|:----------------------------|
|version |R version 3.4.2 (2017-09-28) |
|os |macOS Sierra 10.12.6 |
|system |x86_64, darwin15.6.0 |
|ui |X11 |
|language |(EN) |
|collate |en_US.UTF-8 |
|tz |Europe/Brussels |
|date |2017-10-18 |

# Dependencies

|package |old |new |Δ |
|:--------|:-----|:-----|:--|
|lazyeval |0.2.0 |0.2.1 |* |

# Revdeps

## Couldn't check (7)

|package |version |error |warning |note |
|:--------------------------------|:-------|:-----|:-------|:----|
|[cpr](problems.md#cpr) |0.2.3 |1 | | |
|[HTSSIP](problems.md#htssip) |1.2.0 |1 | | |
|[jqr](problems.md#jqr) |1.0.0 |1 | | |
|[mrgsolve](problems.md#mrgsolve) |0.8.9 |1 | | |
|[openair](problems.md#openair) |2.1-5 |1 | | |
|[ropenaq](problems.md#ropenaq) |0.2.2 |1 | | |
|[sf](problems.md#sf) |0.5-4 |1 | | |

## All (127)

|package |version |error |warning |note |
|:------------------------------------------------------|:-------|:-----|:-------|:----|
|alakazam |0.2.8 | | | |
|AnnotationFilter |1.0.0 | | | |
|assertr |2.0.2.2 | | | |
|[atlantistools](problems.md#atlantistools) |0.4.3 | |1 | |
|basecallQC |1.0.1 | | | |
|binomen |0.1.2 | | | |
|bioinactivation |1.1.5 | | | |
|carpenter |0.2.1 | | | |
|chunked |0.4 | | | |
|cofeatureR |1.0.1 | | | |
|[condformat](problems.md#condformat) |0.6.0 |1 | |1 |
|corrr |0.2.1 | | | |
|[cpr](problems.md#cpr) |0.2.3 |1 | | |
|crosstalk |1.0.0 | | | |
|crplyr |0.1.4 | | | |
|cytominer |0.1.0 | | | |
|datastepr |0.0.2 | | | |
|ddpcr |1.8 | | | |
|distrr |0.0.4 | | | |
|dtplyr |0.0.2 | | | |
|easyformatr |0.1.2 | | | |
|[emil](problems.md#emil) |2.2.8 | | |1 |
|EpiModel |1.5.0 | | | |
|estprod |0.0.1 | | | |
|extdplyr |0.1.4 | | | |
|[eyetrackingR](problems.md#eyetrackingr) |0.1.6 |2 | | |
|[flextable](problems.md#flextable) |0.3.0 | | |1 |
|[foghorn](problems.md#foghorn) |0.4.4 |1 | | |
|fold |0.2.2 | | | |
|forestmodel |0.4.3 | | | |
|funModeling |1.6.5 | | | |
|[gaiah](problems.md#gaiah) |0.0.2 | | |1 |
|[GenomicDataCommons](problems.md#genomicdatacommons) |1.0.5 | | |2 |
|geojson |0.1.2 | | | |
|[geoparser](problems.md#geoparser) |0.1.1 |1 |1 | |
|ggforce |0.1.1 | | | |
|[ggguitar](problems.md#ggguitar) |0.1.1 | | |1 |
|ggloop |0.1.0 | | | |
|[ggplot2](problems.md#ggplot2) |2.2.1 | | |1 |
|[ggraptR](problems.md#ggraptr) |1.0 |1 | |1 |
|[ggstance](problems.md#ggstance) |0.3 | | |1 |
|[ggvis](problems.md#ggvis) |0.4.3 | | |1 |
|[grattan](problems.md#grattan) |1.5.1.2 | | |1 |
|[gutenbergr](problems.md#gutenbergr) |0.1.3 | | |1 |
|[harrietr](problems.md#harrietr) |0.2.2 | | |1 |
|heemod |0.9.2 | | | |
|[HTSSIP](problems.md#htssip) |1.2.0 |1 | | |
|[hurricaneexposure](problems.md#hurricaneexposure) |0.0.1 | | |1 |
|[huxtable](problems.md#huxtable) |1.0.0 | | |1 |
|iadf |0.1.0 | | | |
|IAT |0.3 | | | |
|[jqr](problems.md#jqr) |1.0.0 |1 | | |
|kntnr |0.4.1 | | | |
|lans2r |1.0.5 | | | |
|[lidR](problems.md#lidr) |1.3.1 | | |1 |
|lifelogr |0.1.0 | | | |
|[loopr](problems.md#loopr) |1.0.1 | | |1 |
|[lplyr](problems.md#lplyr) |0.1.6 |1 |1 | |
|manipulateWidget |0.7.0 | | | |
|[mapfuser](problems.md#mapfuser) |0.1.2 |1 | | |
|[markmyassignment](problems.md#markmyassignment) |0.6.1 | | |1 |
|[mason](problems.md#mason) |0.2.5 | | |1 |
|metacoder |0.1.3 | | | |
|[metagenomeFeatures](problems.md#metagenomefeatures) |1.8.1 | | |2 |
|metaplot |0.2.1 | | | |
|mockr |0.1 | | | |
|[modelr](problems.md#modelr) |0.1.1 | | |1 |
|[mosaic](problems.md#mosaic) |1.1.0 | | |2 |
|mosaicCore |0.4.0 | | | |
|[mosaicModel](problems.md#mosaicmodel) |0.3.0 | | |1 |
|[mrgsolve](problems.md#mrgsolve) |0.8.9 |1 | | |
|ncappc |0.2.1.1 | | | |
|networkreporting |0.1.1 | | | |
|nlstimedist |1.1.1 | | | |
|[nonmemica](problems.md#nonmemica) |0.7.6 | |1 |1 |
|[observer](problems.md#observer) |0.1.2 | | |1 |
|ompr |0.6.0 | | | |
|[openair](problems.md#openair) |2.1-5 |1 | | |
|padr |0.3.0 | | | |
|[parsemsf](problems.md#parsemsf) |0.1.0 |2 |1 |1 |
|photobiologyInOut |0.4.13 | | | |
|[PKPDmisc](problems.md#pkpdmisc) |2.0.0 | | |1 |
|plotly |4.7.1 | | | |
|poplite |0.99.19 | | | |
|[purrrlyr](problems.md#purrrlyr) |0.0.2 | | |1 |
|[R6Frame](problems.md#r6frame) |0.1.0 |1 | | |
|[rbokeh](problems.md#rbokeh) |0.5.0 | | |2 |
|request |0.1.0 | | | |
|rex |1.1.1 | | | |
|[rfishbase](problems.md#rfishbase) |2.1.2 | | |1 |
|[rgho](problems.md#rgho) |1.0.1 |1 |1 | |
|RmarineHeatWaves |0.15.7 | | | |
|[RNeXML](problems.md#rnexml) |2.0.7 | | |1 |
|[ropenaq](problems.md#ropenaq) |0.2.2 |1 | | |
|[rPref](problems.md#rpref) |1.2 | | |1 |
|rprev |0.2.4 | | | |
|[rscorecard](problems.md#rscorecard) |0.4.0 | |1 | |
|RSDA |2.0.2 | | | |
|[rtimicropem](problems.md#rtimicropem) |1.3 | | |1 |
|scrubr |0.1.1 | | | |
|[sf](problems.md#sf) |0.5-4 |1 | | |
|[shazam](problems.md#shazam) |0.1.8 | | |1 |
|simPH |1.3.10 | | | |
|[SpaDES.core](problems.md#spadescore) |0.1.0 |1 | |1 |
|[sparklyr](problems.md#sparklyr) |0.6.3 |1 | | |
|spdplyr |0.1.3 | | | |
|srvyr |0.2.2 | | | |
|statar |0.6.5 | | | |
|[statisticalModeling](problems.md#statisticalmodeling) |0.3.0 |1 |1 |1 |
|summariser |0.1.0 | | | |
|survutils |1.0.0 | | | |
|[sweep](problems.md#sweep) |0.2.0 | | |1 |
|[tadaatoolbox](problems.md#tadaatoolbox) |0.13.0 | | |2 |
|[taxa](problems.md#taxa) |0.1.0 | | |1 |
|[tbl2xts](problems.md#tbl2xts) |0.1.2 | | |1 |
|[tidyquant](problems.md#tidyquant) |0.5.3 |1 |1 |1 |
|tigger |0.2.11 | | | |
|[timetk](problems.md#timetk) |0.1.0 | | |1 |
|treeplyr |0.1.3 | | | |
|unpivotr |0.2.1 | | | |
|[valaddin](problems.md#valaddin) |0.1.2 | | |1 |
|[vqtl](problems.md#vqtl) |1.2.0 | | |1 |
|VWPre |0.9.6 | | | |
|webmockr |0.1.0 | | | |
|wrangle |0.4 | | | |
|wrswoR.benchmark |0.2 | | | |
|xpose4 |4.6.0 | | | |

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## revdepcheck results

We checked 52 reverse dependencies, comparing R CMD check results across CRAN and dev versions of this package.

* We saw 0 new problems
* We failed to check 0 packages

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*Wow, no problems at all. :)*
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