package dolmen

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package dolmen
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Module Ty.VarSource

A module for variables that occur in types.

Sourcetype t = ty_var

The type of variables the can occur in types

Sourceval print : Format.formatter -> t -> unit

Printer.

Sourceval hash : t -> int

A hash function for type variables, should be suitable to create hashtables.

Sourceval equal : t -> t -> bool

An equality function on type variables. Should be compatible with the hash function.

Sourceval compare : t -> t -> int

Comparison function on variables.

Sourceval mk : string -> t

Create a new type variable with the given name.

Sourceval wildcard : unit -> t

Type wildcard

Sourceval is_wildcard : t -> bool

Predictae to distinguish wildcard type variables.

Sourceval get_tag : t -> 'a Tag.t -> 'a option

Get the value bound to a tag.

Sourceval get_tag_list : t -> 'a list Tag.t -> 'a list

Get the list of values bound to a list tag, returning the empty list if no value is bound.

Sourceval get_tag_last : t -> 'a list Tag.t -> 'a option

Get the last value bound to a list tag.

Sourceval set_tag : t -> 'a Tag.t -> 'a -> unit

Set the value bound to the tag.

Sourceval add_tag : t -> 'a list Tag.t -> 'a -> unit

Bind an additional value to a list tag.

Sourceval add_tag_opt : t -> 'a list Tag.t -> 'a option -> unit

Optionally bind an additional value to a list tag.

Sourceval add_tag_list : t -> 'a list Tag.t -> 'a list -> unit

Bind a list of additional values to a list tag.

Sourceval unset_tag : t -> _ Tag.t -> unit

Remove the binding to the given tag.

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