diff options
| author | Pierre-Marie Pédrot | 2020-03-20 15:52:42 +0100 |
|---|---|---|
| committer | Pierre-Marie Pédrot | 2020-03-20 15:52:42 +0100 |
| commit | 4d025d4161599ea20cd1dbf489a6412f019a7a7e (patch) | |
| tree | 9374846f74bc76efe4c4f3e8f5ffd7840014af5c /doc/sphinx/addendum/type-classes.rst | |
| parent | 5b7a6471cf812a708dbbb8943f30d525e46250f6 (diff) | |
| parent | 4b37834a2ed6a275daec1c98fac19795f96712ce (diff) | |
Merge PR #11665: Make Cumulative, NonCumulative and Private attributes.
Ack-by: SkySkimmer
Reviewed-by: jfehrle
Reviewed-by: ppedrot
Diffstat (limited to 'doc/sphinx/addendum/type-classes.rst')
| -rw-r--r-- | doc/sphinx/addendum/type-classes.rst | 50 |
1 files changed, 29 insertions, 21 deletions
diff --git a/doc/sphinx/addendum/type-classes.rst b/doc/sphinx/addendum/type-classes.rst index 7abeca7815..bd4c276571 100644 --- a/doc/sphinx/addendum/type-classes.rst +++ b/doc/sphinx/addendum/type-classes.rst @@ -47,7 +47,7 @@ Leibniz equality on some type. An example implementation is: | tt, tt => eq_refl tt end }. -Using the attribute ``refine``, if the term is not sufficient to +Using the :attr:`refine` attribute, if the term is not sufficient to finish the definition (e.g. due to a missing field or non-inferable hole) it must be finished in proof mode. If it is sufficient a trivial proof mode with no open goals is started. @@ -77,9 +77,9 @@ remaining fields, e.g.: Defined. One has to take care that the transparency of every field is -determined by the transparency of the :cmd:`Instance` proof. One can use -alternatively the :cmd:`Program Instance` variant which has richer facilities -for dealing with obligations. +determined by the transparency of the :cmd:`Instance` proof. One can +use alternatively the :attr:`program` attribute to get richer +facilities for dealing with obligations. Binding classes @@ -174,7 +174,7 @@ For example: .. coqtop:: in - Global Program Instance option_eqb : EqDec (option A) := + #[ global, program ] Instance option_eqb : EqDec (option A) := { eqb x y := match x, y with | Some x, Some y => eqb x y | None, None => true @@ -188,7 +188,7 @@ For example: About option_eqb. -Here the :cmd:`Global` modifier redeclares the instance at the end of the +Here the :attr:`global` attribute redeclares the instance at the end of the section, once it has been generalized by the context variables it uses. @@ -300,9 +300,11 @@ Summary of the commands The :cmd:`Class` command is used to declare a typeclass with parameters :token:`binders` and fields the declared record fields. - This command supports the :attr:`universes(polymorphic)`, :attr:`universes(monomorphic)`, + Like any command declaring a record, this command supports the + :attr:`universes(polymorphic)`, :attr:`universes(monomorphic)`, :attr:`universes(template)`, :attr:`universes(notemplate)`, - :attr:`Cumulative`, :attr:`NonCumulative` and :attr:`Private` attributes. + :attr:`universes(cumulative)`, :attr:`universes(noncumulative)` and + :attr:`private(matching)` attributes. .. _singleton-class: @@ -341,6 +343,25 @@ Summary of the commands :tacn:`auto` hints. If the priority :token:`num` is not specified, it defaults to the number of non-dependent binders of the instance. + This command supports the :attr:`global` attribute that can be + used on instances declared in a section so that their + generalization is automatically redeclared after the section is + closed. + + Like :cmd:`Definition`, it also supports the :attr:`program` + attribute to switch the type checking to `Program` (chapter + :ref:`programs`) and use the obligation mechanism to manage missing + fields. + + Finally, it supports the lighter :attr:`refine` attribute: + + .. attr:: refine + + This attribute can be used to leave holes or not provide all + fields in the definition of an instance and open the tactic mode + to fill them. It works exactly as if no body had been given and + the :tacn:`refine` tactic has been used first. + .. cmdv:: Instance @ident {* @binder } : forall {* @binder }, @term__0 {+ @term} {? | @num } := @term This syntax is used for declaration of singleton class instances or @@ -348,19 +369,6 @@ Summary of the commands {+ @term}`. One need not even mention the unique field name for singleton classes. - .. cmdv:: Global Instance - :name: Global Instance - - One can use the :cmd:`Global` modifier on instances declared in a - section so that their generalization is automatically redeclared - after the section is closed. - - .. cmdv:: Program Instance - :name: Program Instance - - Switches the type checking to `Program` (chapter :ref:`programs`) and - uses the obligation mechanism to manage missing fields. - .. cmdv:: Declare Instance :name: Declare Instance |
