4.11.2 Defining and selecting modules

Special Form: define-module name body ...

Name must be a symbol If a module named name does not exist, create one. Then evaluates body sequentially in the module.

Special Form: select-module name

Makes a module named name as the current module. It is an error if no module named name exists.

If select-module is used in the Scheme file, its effect is limited inside the file, i.e. even if you load/require a file that uses select-module internallly, the current module of requirer is not affected.

Special Form: with-module name body ...

Evaluates body sequentially in the module named name. Returns the last result(s). If no moudle named name, an error is signalled.

Special Form: current-module

Evaluates to the current module in the compile context. Note that this is a special form, not a function. Module in Gauche is statically determined at compile time.

(define-module foo (export get-current-module) (define (get-current-module) (module-name (current-module)))) (define-module bar (import foo) (get-current-module)) => foo ; not bar