moonrockz/gleam-parser/targets

README
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moonrockz/gleam-parser/targets does not have a README file

RegistrationError

pub(all) suberror RegistrationError {
  InvalidName(String)
  Conflict(String)
} derive(Eq, @moonbitlang/core/debug.Debug
Debug)

An invalid name or a registration that conflicts with an existing target. Conflict names the canonical target. Registration never replaces a value.

Name

source

pub struct Name {
  value : String
} derive(Eq, Hash, @moonbitlang/core/debug.Debug
Debug)

A target name that the scanner reads as one ordinary name. Standard identities and their aliases cannot be extension names. Construct this value with Name::Name or Name::from_string.

Name::Name

source

fn Name::Name(value : String) -> Name raise RegistrationError

Validate an extension name. Raise InvalidName for keywords, standard target names, aliases, whitespace, or punctuation.

test {
  assert_eq(@targets.Name("orbit").to_string(), "orbit")
  assert_eq(@targets.Name::from_string("js"), None)
}

Name::from_string

source

fn Name::from_string(value : String) -> Name?

Validate a name without raising an error. Return None for invalid names.

Name::to_string

source

fn Name::to_string(self : Name) -> String

Return the validated source spelling.

Registry

source

pub struct Registry {
  targets : ArrayView[Target]
} derive(Eq, @moonbitlang/core/debug.Debug
Debug)

An immutable set of canonical target identities. Standard identities and aliases are reserved. Use standard, then register for each extension.

Registry::all

source

fn Registry::all(self : Registry) -> Array[Target]

Return a copy of the registered identities in deterministic order, with standard targets first.

Registry::register

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fn Registry::register(self : Registry, target : Target) -> Registry raise RegistrationError

Return a new registry with this extension. Raise Conflict if the canonical name already exists, including either standard identity. The original registry is unchanged on success and failure.

test {
  let base = @targets.Registry::standard()
  let orbit = @targets.Target::extension("orbit")
  let extended = base.register(orbit)
  assert_eq(base.resolve("orbit"), None)
  assert_eq(extended.resolve("orbit"), Some(orbit))
}

Registry::resolve

source

fn Registry::resolve(self : Registry, name : String, aliases? : Bool) -> Target?

Resolve a registered canonical name. With aliases=true, also resolve the compiler's deprecated erl and js shorthands. The parser uses these shorthands only for @target, matching standard Gleam.

Registry::standard

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fn Registry::standard() -> Registry

The strict standard registry: Erlang and JavaScript.

Target

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pub(all) enum Target {
  Erlang
  JavaScript
  Extension(Name)
} derive(Eq, Hash, @moonbitlang/core/debug.Debug
Debug)

An execution or translation destination. Registration enables syntax and representation; it does not supply a backend or resolve foreign symbols. Extension identities contain a validated name and require no new enum case.

Target::extension

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fn Target::extension(name : String) -> Target raise RegistrationError

Construct an extension identity. Raise InvalidName for reserved or malformed names. Register the identity in a dialect before parsing it.

Target::name

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fn Target::name(self : Target) -> String

Return the canonical source and JSON spelling.

Target::of

source

fn Target::of(name : String) -> Target?

Read a standard compiler target name. Extensions require registry lookup.

Source Files

target.mbt

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#RegistrationError

#Name

#Name::Name

#Name::from_string

#Name::to_string

#Registry

#Registry::all

#Registry::register

#Registry::resolve

#Registry::standard

#Target

#Target::extension

#Target::name

#Target::of

Source Files

RegistrationError

Name

Name::Name

Name::from_string

Name::to_string

Registry

Registry::all

Registry::register

Registry::resolve

Registry::standard

Target

Target::extension

Target::name

Target::of