6.12 Compilation unitsこのページは最後に更新されてから1年以上経過しています。情報が古い可能性がありますので、ご注意ください。 last mod. 2008-04-15 (火) 15:20:50
unit-interface ::= { specification [;;] } unit-implementation ::= { definition [;;] } Compilation units bridge the module system and the separate compilation system. A compilation unit is composed of two parts: an interface and an implementation. The interface contains a sequence of specifications, just as the inside of a sig ... end signature expression. The implementation contains a sequence of definitions, just as the inside of a struct ... end module expression. A compilation unit also has a name unit-name, derived from the names of the files containing the interface and the implementation (see chapter 8 for more details). A compilation unit behaves roughly as the module definition module unit-name : sig unit-interface end = struct unit-implementation end A compilation unit can refer to other compilation units by their names, as if they were regular modules. For instance, if U is a compilation unit that defines a type t, other compilation units can refer to that type under the name U.t; they can also refer to U as a whole structure. Except for names of other compilation units, a unit interface or unit implementation must not have any other free variables. In other terms, the type-checking and compilation of an interface or implementation proceeds in the initial environment name_1 : sig specification_1 end ... name_n : sig specification_n end where name_1 ... name_n are the names of the other compilation units available in the search path (see chapter 8 for more details) and specification_1 ... specification_n are their respective interfaces. |