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Named Arguments #625

Merged
merged 32 commits into from
Sep 17, 2023
Merged

Named Arguments #625

merged 32 commits into from
Sep 17, 2023

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gdotdesign
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This PR implements the ability to call functions with an alternative syntax using the names of the arguments.

component Main {
  fun test (argument1 : String, argument2: Number) : Html {
    <div/>
  }

  fun render : Html {
    test(argument2: 0, argument1: "")
  }
}

The only rule as of now is that there can't be normal arguments and labelled arguments in a call.

@gdotdesign gdotdesign requested a review from Sija August 8, 2023 12:35
@gdotdesign gdotdesign self-assigned this Aug 8, 2023
@gdotdesign gdotdesign added this to the 0.19.0 milestone Aug 8, 2023
src/compilers/call.cr Outdated Show resolved Hide resolved
.parameters
.index { |param| param.label == argument.name.try(&.value) }

raise CallNotFoundArgument, {
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Suggested change
raise CallNotFoundArgument, {
raise ArgumentNameMismatch, {

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I don't agree with change, it's not a mismatch (although it could be) but a not found parameter.

If we really need to change this, then It could be CallArgumentNameMismatch.

src/type_checkers/call.cr Outdated Show resolved Hide resolved
Comment on lines -21 to +31
parameters.map(&.to_pretty.as(String))
parameters.map do |param|
pretty =
param.to_pretty.as(String)

if param.label
"#{param.label}: #{pretty}"
else
pretty
end
end
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I'd refactor this into Record#to_pretty(named_arguments: true).

src/type_checkers/argument.cr Outdated Show resolved Hide resolved
src/type_checkers/call.cr Outdated Show resolved Hide resolved
src/type_checkers/call.cr Outdated Show resolved Hide resolved
@Sija Sija added enhancement New feature or request language Language feature labels Aug 9, 2023
@gdotdesign gdotdesign requested a review from Sija September 7, 2023 08:32
@gdotdesign gdotdesign marked this pull request as ready for review September 7, 2023 08:32
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Nice 🤩

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Sija commented Sep 9, 2023

As a side note: I'd use Calls with named arguments or Named arguments in calls wording rather than Labeled calls, which IMO is a bit abstract.

Base automatically changed from locales to master September 17, 2023 19:10
@gdotdesign gdotdesign changed the title Labelled Calls. Named Arguments Sep 17, 2023
@gdotdesign gdotdesign merged commit 5acd5b8 into master Sep 17, 2023
@gdotdesign gdotdesign deleted the labelled-calls branch September 17, 2023 19:29
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2 participants