[WIP] feat(std): add time module to standard library #779

Etherian · 2019-08-24T17:42:11Z

Description

Adds a time module to the standard library which exposes the functionality of Rust's std::time.

Status

In Development

Outstanding design questions

~~How should std.time be structured -- std.time.Instant.now, std.time.instant_now, std.instant.now, or something else?~~ (std.time.Instant.now)
~~Should std.time be behind a feature? Should that feature be default?~~ (not behind feature)

To Do

Future Directions

add duration.from_secs_float, duration.as_secs_float, duration.mul_float, and duration.div_float
Add more full-featured date-and-time functionality to the standard library? Chrono?

Etherian · 2019-08-24T18:01:53Z

Here's my rough draft of a std.time module. Structurally, I'm leaning towards each of the three types getting their own namespace -- e.g. std.time.Instant.now or std.time.Duration.checked_sub.

For now, I'm stuck on an error that occurs when I attempt to import std.time.

> .\target\debug\gluon.exe -i
gluon (:h for help, :q to quit)
> let time = import! std.time
error: error: Userdata cannot be cloned
- <std.time>:3:20
  |
3 | let time = import! std.time.prim
  |                    ^^^^^^^^^^^^^
  |

Any suggestions?

src/std_lib/time.rs

Marwes · 2019-08-25T08:54:12Z

Here's my rough draft of a std.time module. Structurally, I'm leaning towards each of the three types getting their own namespace -- e.g. std.time.Instant.now or std.time.Duration.checked_sub.

👍 std.time.duration.checked_sub etc

Marwes · 2019-08-25T08:55:51Z

Should std.time be behind a feature? Should that feature be default?

I don't think a feature is warranted for modules mirroring rusts std library. If we end up seeing that gluon's standard library is to large at some point it could be investigated then.

Etherian · 2019-08-30T00:18:19Z

Adding #[gluon_userdata(clone)] caused a couple errors.

error[E0053]: method `deep_clone` has an incompatible type for trait
  --> src\std_lib\time.rs:16:24
   |
16 | #[derive(Clone, Debug, Userdata, Trace, VmType)]
   |                        ^^^^^^^^ expected struct `vm::gc::Borrow`, found struct `vm::gc::GcPtr`
   |
   = note: expected type `fn(&std_lib::time::Duration, &'gc mut vm::api::Cloner<'_>) -> std::result::Result<vm::gc::Borrow<'gc, vm::gc::GcPtr<std::boxed::Box<(dyn vm::api::Userdata + 'static)>>>, vm::Error>`
              found type `fn(&std_lib::time::Duration, &mut vm::api::Cloner<'_>) -> std::result::Result<vm::gc::GcPtr<std::boxed::Box<(dyn vm::api::Userdata + 'static)>>, vm::Error>`

error[E0308]: mismatched types
  --> src\std_lib\time.rs:16:24
   |
16 | #[derive(Clone, Debug, Userdata, Trace, VmType)]
   |                        ^^^^^^^^
   |                        |
   |                        expected struct `vm::gc::GcPtr`, found struct `vm::gc::Borrow`
   |                        expected `std::result::Result<vm::gc::GcPtr<std::boxed::Box<(dyn vm::api::Userdata + 'static)>>, vm::Error>` because of return type
   |
   = note: expected type `std::result::Result<vm::gc::GcPtr<std::boxed::Box<(dyn vm::api::Userdata + 'static)>>, _>`
              found type `std::result::Result<vm::gc::Borrow<'_, vm::gc::GcPtr<std::boxed::Box<dyn vm::api::Userdata>>, >, _>`

@Etherian

cc gluon-lang#779 cc @Etherian

Etherian · 2019-09-12T19:47:11Z

Could you mentor me regarding tests for this module? I don't have much experience writing tests and I am not confident I can write them correctly and thoroughly. Maybe you could give me examples or an outline of what properties to test and how to test those properties?

Also, how do I include documentation for external types and values?

Marwes · 2019-09-15T17:46:12Z

Since this is mostly just exposing functions defined and tested by rust itself I don't think the testing needs to be so thorough. Having some examples like in https://doc.rust-lang.org/std/time/struct.Duration.html would be good though.

There isn't a way to define documentation in rust code so you will need to define it in the gluon module

/// Docs
let new = prim.new
{
    new,
    /// Docs
    checked_sub = prim.checked_sub,
    ....
}

Doc tests require some unfortunate boilerplate atm, but you can look at the json module for how they are done

gluon/std/json/de.glu

Lines 67 to 77 in a507ed0

    
           /// Deserializes a `Bool` 
        
           /// 
        
           /// ``` 
        
           /// let { ? } = import! std.effect 
        
           /// let { Value, bool, deserialize_with } = import! std.json.de 
        
           /// let { Result, ? } = import! std.result 
        
           /// let { assert_eq, ? } = import! std.test 
        
           /// 
        
           /// seq assert_eq (deserialize_with bool "true") (Ok True) 
        
           /// assert_eq (deserialize_with bool "123") (Err "Expected bool") 
        
           /// ```

…reak referential transparency

Etherian · 2020-08-15T17:40:30Z

I finally got around to finishing the doc comments for std.time. Is there a way I can test the examples without running the whole doc test suite?

Marwes · 2020-08-15T17:48:57Z

cargo test --test main --features test -- @time should only compile and run tests for modules matching time

Etherian · 2020-08-16T01:41:53Z

It looks like doc comments are not currently recognized on record entries, which is where I have placed my docs for the time modules. Could this behavior be added, and/or should I restructure my gluon files so doc comments are all attached to let bindings?

cc gluon-lang#779

Marwes · 2020-08-16T09:18:24Z

#870

870: test: Extract doc tests defined in record fields r=Marwes a=Marwes cc #779 Co-authored-by: Markus Westerlind <[email protected]>

Etherian · 2020-09-06T23:26:23Z

I'm running into a few errors while testing the examples.

This line in some examples

let dur_show : Show duration.Duration = { show = \_ -> "<duration>" }

seems to cause the following error:

thread 'tokio-runtime-worker' panicked at 'Lambda without source location. Please report an issue at https://github.com/gluon-lang/gluon/issues', check\src\rename.rs:246:94

Replacing the lambdas with const fixed these errors.

Various other errors occur unpredictably. In fact, one time all the tests passed without any of these errors. I don't have any guesses as to why they are occurring.

thread 'tokio-runtime-worker' panicked at 'assertion failed: `(left == right)`
  left: `7`,
 right: `3`', vm\src\stack.rs:579:9

thread 'tokio-runtime-worker' panicked at 'called `Result::unwrap()` on an `Err` value: "PoisonError { inner: .. }"', vm\src\thread.rs:1143:22

thread 'tokio-runtime-worker' panicked at 'Attempted to pop Frame { offset: 22, state: Extern(ExternState { function: std.time.prim.system_time.duration_since 0x5dcb40, call_state: Poll, locked: None }), excess: false } but std.time.prim.system_time.now was expected

thread 'tokio-runtime-worker' panicked at 'Expected extern: Closure(ClosureState { closure: ClosureData { function: 0x12cc4750:wrap@38_5, upvars: [] }, instruction_index: 0 }). Please report an issue at https://github.com/gluon-lang/gluon/issues', vm\src\stack.rs:251:18

thread ':tokio-runtime-worker' panicked at ':ValueRef is not an Userdata: Int(0). Please report an issue at https://github.com/gluon-lang/gluon/issues', <rustlib>/src/rust\src\libstd\macros.rs:16:9

Full output of a test run

> cargo test --test main --features test time
    Finished test [unoptimized + debuginfo] target(s) in 1.33s
     Running target\debug\deps\main-79fe047da3eb48b4.exe
main
        doc
                std.time.duration
                        Duration ... ok
                        new ... ok
                        from_secs ... ok
                        from_millis ... ok
                        from_micros ... ok
                        from_nanos ... ok
                        as_secs ... ok
                        subsec_millis ... ok
                        subsec_micros ... ok
                        subsec_nanos ... ok
                        as_millis ... ok
                        as_micros ... thread 'tokio-runtime-workerok' panicked at '
Expected extern: Closure(ClosureState { closure: ClosureData { function: 0x1438a1d0:assert_some@59_5, upvars: [<0x12d29420:wrap@38_5 0x141afa28>, {2147483648: {2147483648: <0x12d84980:std.effect.functor@35_11 0x142b1a28>}, {2147483648: {2147483648: <0x12d84980:std.effect.functor@35_11 0x142b1a
                        as_nanos ... 28>}, <0x1413ddc0:std.effect.applicative@40_13 0x142b1d28>, <0x14088e80:wrap_eff@28_5 0x142b1728>}, {2147483648: {2147483648: {2147483648: }, <0x1413ddc0:std.effect.applicative@40_13 0x142b1d28>, <0x14088e80:wrap_eff@28_5 0x142b1728>}, <0x14088ee0:flat_map_eff@29_5 0x142b1828>}, <0x13ed0020:ruokn_pure@56_5 0x142b1f28>, <0x13ed0000:inject_rest@51_5 0x142b1e28>}, <0x140fdb90:tell@22_5 0x14394ea8>] }, instruction_index: 0 }). Please report an issue at https://github.com/gluon-lang/gluon/issues
', vm\src\stack.rs                      checked_add ... :ok251
:18                     checked_sub ...
thread 'oktokio-runtime-workernote: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

' panicked at 'Attempted to pop Frame { offset: 22, state: Extern(ExternState { function: std.time.prim.system_time.duration_since 0x5dcb40, call_state: Poll, locked: None }), excess: false } but std.time.prim.system_time.now was expected                     checked_mul ... ', okvm\src\thread.rs
:1927                   checked_div ... :thread 'ok13tokio-runtime-worker

' panicked at 'called `Result::unwrap()` on an `Err` value: "PoisonError { inner: .. }"
thread '', tokio-runtime-workervm\src\thread.rs         std.time.instant
' panicked at ':called `Result::unwrap()` on an `Err` value: "PoisonError { inner: .. }"1143                    Instant ... ', :okvm\src\thread.rs22
:
1143                    now ... :FAILED22

thread 'thread 'tokio-runtime-workerExpected extern: Closure(ClosureState { closure: ClosureData { function: 0x1438a1d0:assert_some@59_5, upvars: [<0x12d29420:wrap@38_5 0x141afa28>, {2147483648: {2147483648: <0x12d84980:std.effect.functor@35_11 0x142b1a28>}, {2147483648: {2147483648: <0x12d84980:std.effect.functor@35_11 tokio-runtime-worker' panicked at '0x142b1a28>}, <0x1413ddc0:std.effect.applicative@40_13 0x142b1d28>, <0x14088e80:wrap_eff@28_5 0x142b1728>}, {2147483648: {2147483648: {2147483648: }, <0x1413ddc0:std.effect.applicative@40_13 0x142b1d28>, <0x14088e80:wrap_eff@28_5 0x142b1728>}, <0x14088ee0:flat_map_eff@29_5 0x142b1828>}, <0x13e' panicked at 'called `Result::unwrap()` on an `Err` value: "PoisonError { inner: .. }"d0020:run_pure@56_5 0x142b1f28>, <0x13ed0000:inject_rest@51_5 0x142b1e28>}, <0x140fdb90:tell@22_5 0x14394ea8>] }, instruction_index: 0 }). Please rcalled `Result::unwrap()` on an `Err` value: "PoisonError { inner: .. }"', eport an issue at https://github.com/gluon-lang/gluon/issues', vm\src\thread.rs                      durvm\src\thread.rsation_since ... ::1143FAILED1143:
:2222

thread 'thread 'tokio-runtime-workercalled `Result::unwrap()` on an `Err` value: "PoisonError { inner: .. }"tokio-runtime-worker' panicked at '
        saturating_duration_since ... ' pacalled `Result::unwrap()` on an `Err` value: "PoisonError { inner: .. }"nicked at 'FAILED', called `Result::unwrap()` on an `Err` value: "PoisonError { inner: .. }"
vm\src\thread.rs', :GetOffset on <0x12d29420:wrap@38_5 0x141afa28>vm\src\thread.rs1143:                 elapsed ... :114322FAILED:

22thread '
tokio-runtime-worker' panicked at 'thread 'called `Result::unwrap()` on an `Err` value: "PoisonError { inner: .. }"tokio-runtime-worker', ' panicked at 'vm\src\thread.rscalled `Result::unwrap()` on an `Err` value: "PoisonError { inner: .. }":1143', vm\src\thread.rs::221143:
22
thread 'called `Result::unwrap()` on an `Err` value: "PoisonError { inner: .. }"tokio-runtime-worker                    checked_add ... ' panicked FAILEDat '
called `Result::unwrap()` on an `Err` value: "PoisonError { inner: .. }"', vm\src\thread.rscalled `Result::unwrap()` on an `Err` value: "PoisonError { inner: .. }":                       checked_sub ... 1143:FAILED22

called `Result::unwrap()` on an `Err` value: "PoisonError { inner: .. }"
                std.time.system_time
                        unix_epoch ... FAILED
Attempted to pop Frame { offset: 22, state: Extern(ExternState { function: std.time.prim.system_time.duration_since 0x5dcb40, call_state: Poll, locked: None }), excess: false } but std.time.prim.system_time.now was expected                    now ... FAILED
called `Result::unwrap()` on an `Err` value: "PoisonError { inner: .. }"                        duration_since ... FAILED
called `Result::unwrap()` on an `Err` value: "PoisonError { inner: .. }"                        elapsed ... FAILED
called `Result::unwrap()` on an `Err` value: "PoisonError { inner: .. }"                        checked_add ... FAILED
called `Result::unwrap()` on an `Err` value: "PoisonError { inner: .. }"                        checked_sub ... FAILED
called `Result::unwrap()` on an `Err` value: "PoisonError { inner: .. }"


test result: FAILED. 18 passed; 12 failed; 175 filtered
Some tests failed
error: test failed, to rerun pass '--test main'

Etherian · 2020-10-03T17:35:59Z

@Marwes Have you had a chance to look at this?

Marwes · 2020-10-08T10:23:30Z

Sorry, no. Haven't had that much motivation to code outside of work lately. Won't have time over the weekend either but I will try to look at it next week.

Etherian · 2020-10-09T23:38:40Z

Sure. No rush. 🙂

Etherian · 2021-08-02T21:34:32Z

The good news is no conflicts have cropped up. The bad news is that it's still throwing errors I don't know how to solve. Do you have time to take a look, @Marwes?

Etherian added 2 commits August 24, 2019 00:02

feat(std): add std::time bindings

474387f

feat(std): add std.time module

5c51709

Marwes requested changes Aug 25, 2019

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Marwes added a commit to Marwes/gluon that referenced this pull request Aug 30, 2019

fix: Add tests and fix the regression with clone_userdata

df07872

cc gluon-lang#779 cc @Etherian

Marwes mentioned this pull request Aug 30, 2019

fix: Add tests and fix the regression with clone_userdata #780

Merged

Etherian added 4 commits August 30, 2019 20:32

feat(std): restructure std.time

a878f7b

Merge branch 'master' into time

db6add0

add rest of std::time functions

04b4bf7

Merge branch 'master' into time

b47e513

Etherian added 11 commits September 25, 2019 03:04

wrap return of Instant.now & SystemTime.now in IO monad, since they b…

905a314

…reak referential transparency

add eq and lt functions to each type

1c3e5b4

reformat std.time and add docs for std.time.duration

f50c72f

fix imports in std.time modules

593a376

various cleanups and fixes

30e5cfb

Merge branch 'master' into time

9eb327c

Merge branch 'master' into time

8ff4a16

fix(std): remove panic condition of time.instant.elapsed

f38694d

add docs for std.time.instant

13066ca

Merge branch 'master' into time

08ddac7

Merge branch 'master' into time

b8b70c5

Marwes added a commit to Marwes/gluon that referenced this pull request Aug 16, 2020

test: Extract doc tests defined in record fields

1c8a1c0

cc gluon-lang#779

Marwes mentioned this pull request Aug 16, 2020

test: Extract doc tests defined in record fields #870

Merged

bors bot added a commit that referenced this pull request Aug 16, 2020

Merge #870

e150b9f

870: test: Extract doc tests defined in record fields r=Marwes a=Marwes cc #779 Co-authored-by: Markus Westerlind <[email protected]>

Etherian added 6 commits August 16, 2020 13:07

Merge branch 'master' into time

49eab26

Merge branch 'master' into time

608fb89

feat(std): add saturating_duration_since to instant and system_time

4d6b6f5

doc(std): add docs to system_time.glu

1bd60a7

add saturating_duration_since to instant.glu

2eaaf1d

clean up doc comments in duration.glu and instant.glu

3e98782

Merge branch 'master' into time

0fe007e

Etherian added 2 commits July 29, 2021 22:42

feat(std.time): expose types in std.time

996e0cc

Merge branch 'master' into time

6f931e0

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[WIP] feat(std): add time module to standard library #779

[WIP] feat(std): add time module to standard library #779

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[WIP] feat(std): add time module to standard library #779

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Description

Status

Outstanding design questions

To Do

Future Directions

Etherian commented Aug 24, 2019 • edited Loading

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