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Diffstat (limited to 'doc/sphinx/language/extensions')
| -rw-r--r-- | doc/sphinx/language/extensions/implicit-arguments.rst | 44 |
1 files changed, 41 insertions, 3 deletions
diff --git a/doc/sphinx/language/extensions/implicit-arguments.rst b/doc/sphinx/language/extensions/implicit-arguments.rst index d93dc00e24..73b1b65097 100644 --- a/doc/sphinx/language/extensions/implicit-arguments.rst +++ b/doc/sphinx/language/extensions/implicit-arguments.rst @@ -351,7 +351,7 @@ application. Use the :n:`(@ident := @term)` form of :token:`arg` to do so, where :token:`ident` is the name of the implicit argument and :token:`term` is its corresponding explicit term. Alternatively, one can deactivate the hiding of implicit arguments for a single function application using the -:n:`@ @qualid {? @univ_annot } {* @term1 }` form of :token:`term10`. +:n:`@@qualid_annotated {+ @term1 }` form of :token:`term_application`. .. example:: Syntax for explicitly giving implicit arguments (continued) @@ -420,6 +420,30 @@ but succeeds in Deactivation of implicit arguments for parsing ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.. insertprodn term_explicit term_explicit + +.. prodn:: + term_explicit ::= @ @qualid_annotated + +This syntax can be used to disable implicit arguments for a single +function. + +.. example:: + + The function `id` has one implicit argument and one explicit + argument. + + .. coqtop:: all reset + + Check (id 0). + Definition id' := @id. + + The function `id'` has no implicit argument. + + .. coqtop:: all + + Check (id' nat 0). + .. flag:: Parsing Explicit Turning this flag on (it is off by default) deactivates the use of implicit arguments. @@ -429,6 +453,19 @@ Deactivation of implicit arguments for parsing to be given as if no arguments were implicit. By symmetry, this also affects printing. +.. example:: + + We can reproduce the example above using the :flag:`Parsing + Explicit` flag: + + .. coqtop:: all reset + + Set Parsing Explicit. + Definition id' := id. + Unset Parsing Explicit. + Check (id 1). + Check (id' nat 1). + .. _canonical-structure-declaration: Canonical structures @@ -606,7 +643,7 @@ Implicit generalization .. index:: `[! ] .. index:: `(! ) -.. insertprodn generalizing_binder typeclass_constraint +.. insertprodn generalizing_binder term_generalizing .. prodn:: generalizing_binder ::= `( {+, @typeclass_constraint } ) @@ -615,7 +652,8 @@ Implicit generalization typeclass_constraint ::= {? ! } @term | %{ @name %} : {? ! } @term | @name : {? ! } @term - + term_generalizing ::= `%{ @term %} + | `( @term ) Implicit generalization is an automatic elaboration of a statement with free variables into a closed statement where these variables are |
