gauche.reload- Reloading modules
In the development cycle, you often have to reload modules frequently. This module supports it.
Note that some part of semantics of the program depends on the order of loading modules, so reloading arbitrary modules may change the program behavior unexpectedly. This module is for developers who knows what they are doing.
Redefinition rules: Reloading a module resets all the binding in the module by default. Sometimes it is not desirable, however. For example, you might want to keep an intermediate results in some variable. You can specify rules for the reloading procedure to determine which binding to keep.
The rule is described in the following syntax.
<module-rules> : (<module-rule> …) <module-rule> : (<module-pattern> <rule> …) <module-pattern> : a symbol module name, or a symbol containing glob pattern <rule> : procedure | symbol | regexp | (and <rule> …) | (or <rule> …) | (not <rule>)
<module-rules> is the global rule to determine per-module
<module-pattern> is either a symbol module name
or a symbol that contains glob pattern (e.g.
<rule> is a procedure, it is used as a predicate
and the bindings whose value satisfies the predicate are kept from
<rule> is a symbol, the binding of
the variable whose name is the symbol is kept. If
is a regexp, the bindings of the variable whose name matches the
regexp are kept.
Note that the mechanism to prevent redefinition is kind of ad-hoc
hack and semantically unclean. Especially, the right-hand expressions
defines are still evaluated, so any side effects they have
will be in effect (e.g.
define-class would still redefine a class).
It’s just for your convenience.
Take a look at the code if you want to know the exact behavior.
Reloads the specified module. You can optionally specify
redefinition rules by rule …,
where each rule is the term
<rule> defined above.
Reloads module(s) that have been modified since they are loaded
last time. If optional module-rules is given, it is
used to determine the redefinition rules for reloaded modules.
If module-rules is omitted, the current rules are used.
The default of current rules is empty. You can set the current
This is a parameter (see Parameters) that keeps
the default module rules for
If called without arguments, returns the current module rules.
If called with module-rules, sets the argument to the
current module rules.
This is a parameter to control verbosity of the reloading procedures. If called without arguments, returns the current verbosity flag. If called with flag, it is set to the current verbosity flag.