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Welcome to CEL Go Discuss!

Feel free to ask questions about the language, implementation, suspected bugs, and desired features.

-The CEL Maintainers

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Dan Kortschak, Tristan Swadell4

Sep 6

Capturing executed node ID during run time

On Thu, 2024-09-05 at 18:14 -0700, 'Tristan Swadell' via CEL Go Discussion Forum wrote: >

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Capturing executed node ID during run time

On Thu, 2024-09-05 at 18:14 -0700, 'Tristan Swadell' via CEL Go Discussion Forum wrote: >

Sep 6

Dan Kortschak, Tristan Swadell6

Jul 26

recovering syntax from an AST

On Sun, 2024-05-05 at 06:15 +0000, 'Dan Kortschak' via CEL Go Discussion Forum wrote: > I

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recovering syntax from an AST

On Sun, 2024-05-05 at 06:15 +0000, 'Dan Kortschak' via CEL Go Discussion Forum wrote: > I

Jul 26

Demontiê Junior, Tristan Swadell3

Jul 25

Get variables associated to the eval details

Hi Demontiê, The variables should definitely come back as identifiers, unless there's something

unread,

Get variables associated to the eval details

Hi Demontiê, The variables should definitely come back as identifiers, unless there's something

Jul 25

mohit nagpal, Tristan Swadell4

Jul 25

using custom pb type for expression error

Hi Mohit, The error message and the test setup don't appear to be quite the same. The type

unread,

using custom pb type for expression error

Hi Mohit, The error message and the test setup don't appear to be quite the same. The type

Jul 25

James Thompson, Tristan Swadell2

Jul 17

Mapping over a map

Hi James, By the end of this quarter, the plan is to have a v2 of comprehensions to support map ->

unread,

Mapping over a map

Hi James, By the end of this quarter, the plan is to have a v2 of comprehensions to support map ->

Jul 17

Jul 3

possible type analysis issue with map macro?

I have a program that I believe should compile but does not. ``` [ "one", "two",

unread,

possible type analysis issue with map macro?

I have a program that I believe should compile but does not. ``` [ "one", "two",

Jul 3

Dan Kortschak, Tristan Swadell9

Apr 15

possible to type convert/assert to a map?

I'm a bit surprised that I wasn't able to repro it with the old method, but I'm glad the

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possible to type convert/assert to a map?

I'm a bit surprised that I wasn't able to repro it with the old method, but I'm glad the

Apr 15

Dan Kortschak, Tristan Swadell6

Mar 18

disagreement between spec and Go implementation for macros over maps

Hi Dan, We'll preserve all existing behaviors as well. -Tristan On Fri, Mar 15, 2024 at 1:02 PM

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disagreement between spec and Go implementation for macros over maps

Hi Dan, We'll preserve all existing behaviors as well. -Tristan On Fri, Mar 15, 2024 at 1:02 PM

Mar 18

Andy Maule, Tristan Swadell4

Feb 29

Expression size limitations

Hi Andy, The codepoint limit is from the parser. You can adjust it, though I may not have exposed

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Expression size limitations

Hi Andy, The codepoint limit is from the parser. You can adjust it, though I may not have exposed

Feb 29

Andy Maule, Tristan Swadell2

Feb 28

switch case semantics

Hi Andy, Internally, we've been discussing switch-case / if-elseif-else style macros mostly to

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switch case semantics

Hi Andy, Internally, we've been discussing switch-case / if-elseif-else style macros mostly to

Feb 28

James Thompson, Tristan Swadell2

Feb 1

Proto optional fields

Hi James, Happy to hear that you're exploring CEL. I believe that the type of the field is not

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Proto optional fields

Hi James, Happy to hear that you're exploring CEL. I believe that the type of the field is not

Feb 1

Jan 15

query re the estimated time frame for next release

Hi, I'm wondering if there is a planned time frame for the next cel-go release? thanks Dan

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query re the estimated time frame for next release

Hi, I'm wondering if there is a planned time frame for the next cel-go release? thanks Dan

Jan 15

Dan Kortschak, Tristan Swadell6

11/21/23

runtime error source location decoration

On Tue, 2023-11-21 at 11:32 -0800, 'Tristan Swadell' via CEL Go Discussion Forum wrote: >

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runtime error source location decoration

On Tue, 2023-11-21 at 11:32 -0800, 'Tristan Swadell' via CEL Go Discussion Forum wrote: >

11/21/23

Mohit Nagpal, Tristan Swadell4

11/13/23

using inline vars in expressions

Hi Mohit, You are welcome to look at the structure of the `cel/inlining_test.go` which should give

unread,

using inline vars in expressions

Hi Mohit, You are welcome to look at the structure of the `cel/inlining_test.go` which should give

11/13/23

Dan Kortschak, Tristan Swadell5

11/2/23

testing map key existence

Hi Dan, Optional types are backwards compatible. Cheers, -Tristan On Wed, Nov 1, 2023 at 5:32 PM

unread,

testing map key existence

Hi Dan, Optional types are backwards compatible. Cheers, -Tristan On Wed, Nov 1, 2023 at 5:32 PM

11/2/23

Mohit Nagpal, Tristan Swadell3

9/18/23

Nested filtering using CEL.

under payload[b] there are sellerid1, selleride2 keys and city key is below that level. On Mon, Sep

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Nested filtering using CEL.

under payload[b] there are sellerid1, selleride2 keys and city key is below that level. On Mon, Sep

9/18/23

Dan Kortschak, Tristan Swadell4

8/23/23

type conversion int -> duration and int (milli/nano) -> timestamp

On Wed, 2023-08-23 at 16:11 -0700, 'Tristan Swadell' via CEL Go Discussion Forum wrote: >

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type conversion int -> duration and int (milli/nano) -> timestamp

On Wed, 2023-08-23 at 16:11 -0700, 'Tristan Swadell' via CEL Go Discussion Forum wrote: >

8/23/23

An Wa, Tristan Swadell2

7/31/23

Is there a way to rename default declarations?

I would recommend creating a separate namespaced variable / function rather than try to rename CEL

unread,

Is there a way to rename default declarations?

I would recommend creating a separate namespaced variable / function rather than try to rename CEL

7/31/23

Dan Kortschak, Tristan Swadell3

6/27/23

asserting a dyn to a map type

On Mon, 2023-06-26 at 11:44 -0700, 'Tristan Swadell' via CEL Go Discussion Forum wrote: >

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asserting a dyn to a map type

On Mon, 2023-06-26 at 11:44 -0700, 'Tristan Swadell' via CEL Go Discussion Forum wrote: >

6/27/23

Matheus de Faria Moraes

6/23/23

Hi everyone, I want to share CEL Playground! A web-based environment built with WASM to quickly test

unread,

Hi everyone, I want to share CEL Playground! A web-based environment built with WASM to quickly test

6/23/23

Chance Zibolski, Tristan Swadell3

6/22/23

Support for list/array slicing?

Hi Chance, Feel free to submit a PR to the `ext` package and we can go from there. Cheers, -Tristan

unread,

Support for list/array slicing?

Hi Chance, Feel free to submit a PR to the `ext` package and we can go from there. Cheers, -Tristan

6/22/23

Chirag Sharma, Charith Ellawala2

6/16/23

Define custom datatype in cel.NewEnv

Is your `Actor` type a protobuf? If so you can do something like this: env, err := cel.NewEnv(cel.

unread,

Define custom datatype in cel.NewEnv

Is your `Actor` type a protobuf? If so you can do something like this: env, err := cel.NewEnv(cel.

6/16/23

Chirag Sharma, Tristan Swadell2

6/13/23

Hi Chirag, The `test-user-access` field is not a valid identifier, so if you are using a map, I'd

unread,

Hi Chirag, The `test-user-access` field is not a valid identifier, so if you are using a map, I'd

6/13/23

Dan Kortschak, Tristan Swadell3

5/30/23

query post v0.12.0 cel.Library construction

On Tue, 2023-05-30 at 08:42 -0700, 'Tristan Swadell' via CEL Go Discussion Forum wrote: >

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query post v0.12.0 cel.Library construction

On Tue, 2023-05-30 at 08:42 -0700, 'Tristan Swadell' via CEL Go Discussion Forum wrote: >

5/30/23

Vyom Yadav, Tristan Swadell2

5/30/23

How is typeName mapped to exact type in implementation?

Hi Vyom, Sorry for the late reply, The type-name would be the protobuf type name, so proto package `

unread,

How is typeName mapped to exact type in implementation?

Hi Vyom, Sorry for the late reply, The type-name would be the protobuf type name, so proto package `

5/30/23

Michael Diao, Tristan Swadell2

4/12/23

How is the ast cached in memory for concurrent scenario?

Hi Michael, The Ast is read-only post-compile, and is safe to share among processes. You can create

unread,

How is the ast cached in memory for concurrent scenario?

Hi Michael, The Ast is read-only post-compile, and is safe to share among processes. You can create

4/12/23

Prathik Rajendran M, Tristan Swadell4

4/6/23

Is it possible to send the compiled AST over the wire?

Hi Prathik, You'll want to use `cel.AstToCheckedExpr()` to convert the AST to a protobuf, and

unread,

Is it possible to send the compiled AST over the wire?

Hi Prathik, You'll want to use `cel.AstToCheckedExpr()` to convert the AST to a protobuf, and

4/6/23

Prathik Rajendran M, Dan Kortschak2

3/15/23

Syntactic sugar for multiple in tests on a list

On Tue, 2023-03-14 at 19:21 -0700, Prathik Rajendran M wrote: > Hi, > > Is there any better

unread,

Syntactic sugar for multiple in tests on a list

On Tue, 2023-03-14 at 19:21 -0700, Prathik Rajendran M wrote: > Hi, > > Is there any better

3/15/23

Dolly Gyanchandani, Tristan Swadell2

2/17/23

How to do string replace and cast to int

Hi Dolly, I'm not super familiar with the setup for KrakenD, but could you tell me what issue you

unread,

How to do string replace and cast to int

Hi Dolly, I'm not super familiar with the setup for KrakenD, but could you tell me what issue you

2/17/23

Aditya, Tristan Swadell3

2/2/23

Does cel-go support multiple returns?

Thanks Tristan On Wednesday, February 1, 2023 at 11:18:35 PM UTC+5:45 tswa...@google.com wrote: Hi

unread,

Does cel-go support multiple returns?

Thanks Tristan On Wednesday, February 1, 2023 at 11:18:35 PM UTC+5:45 tswa...@google.com wrote: Hi

2/2/23

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