elisp @@ macro

[bpt/guile.git] / doc / ref / new-docstrings.texi

@c module-for-docstring (guile)



@deffn {Scheme Procedure} uniform-array->bytevector array
@deffnx {C Function} scm_uniform_array_to_bytevector (array)
Return a newly allocated bytevector whose contents
will be copied from the uniform array @var{array}.
@end deffn

@deffn {Scheme Procedure} %start-stack id thunk
@deffnx {C Function} scm_sys_start_stack (id, thunk)
Call @var{thunk} on an evaluator stack tagged with @var{id}.
@end deffn

@deffn {Scheme Procedure} guardian-destroyed? guardian
@deffnx {C Function} scm_guardian_destroyed_p (guardian)
Return @code{#t} if @var{guardian} has been destroyed, otherwise @code{#f}.
@end deffn

@deffn {Scheme Procedure} guardian-greedy? guardian
@deffnx {C Function} scm_guardian_greedy_p (guardian)
Return @code{#t} if @var{guardian} is a greedy guardian, otherwise @code{#f}.
@end deffn

@deffn {Scheme Procedure} destroy-guardian! guardian
@deffnx {C Function} scm_destroy_guardian_x (guardian)
Destroys @var{guardian}, by making it impossible to put any more
objects in it or get any objects from it.  It also unguards any
objects guarded by @var{guardian}.
@end deffn

@deffn {Scheme Procedure} gc-dump
@deffnx {C Function} scm_gc_dump ()
Dump information about the garbage collector's internal data structures and memory usage to the standard output.
@end deffn

@deffn {Scheme Procedure} gc-disable
@deffnx {C Function} scm_gc_disable ()
Disables the garbage collector.  Nested calls are permitted.  GC is re-enabled once @code{gc-enable} has been called the same number of times @code{gc-disable} was called.
@end deffn

@deffn {Scheme Procedure} gc-enable
@deffnx {C Function} scm_gc_enable ()
Enables the garbage collector.
@end deffn

@deffn {Scheme Procedure} make-generalized-vector type len [fill]
@deffnx {C Function} scm_make_generalized_vector (type, len, fill)
Make a generalized vector
@end deffn

@deffn {Scheme Procedure} set-primitive-generic! subr generic
@deffnx {C Function} scm_set_primitive_generic_x (subr, generic)

@end deffn

@deffn {Scheme Procedure} nl-langinfo item [locale]
@deffnx {C Function} scm_nl_langinfo (item, locale)
Return a string denoting locale information for @var{item} in the current locale or that specified by @var{locale}.  The semantics and arguments are the same as those of the X/Open @code{nl_langinfo} function (@pxref{The Elegant and Fast Way, @code{nl_langinfo},, libc, The GNU C Library Reference Manual}).
@end deffn

@deffn {Scheme Procedure} %warn-autocompilation-enabled
@deffnx {C Function} scm_sys_warn_autocompilation_enabled ()

@end deffn

@deffn {Scheme Procedure} make-syncase-macro type binding
@deffnx {C Function} scm_make_syncase_macro (type, binding)
Return a @dfn{macro} that requires expansion by syntax-case.
While users should not call this function, it is useful to know
that syntax-case macros are represented as Guile primitive macros.
@end deffn

@deffn {Scheme Procedure} make-extended-syncase-macro m type binding
@deffnx {C Function} scm_make_extended_syncase_macro (m, type, binding)
Extend a core macro @var{m} with a syntax-case binding.
@end deffn

@deffn {Scheme Procedure} syncase-macro-type m
@deffnx {C Function} scm_syncase_macro_type (m)
Return the type of the macro @var{m}.
@end deffn

@deffn {Scheme Procedure} syncase-macro-binding m
@deffnx {C Function} scm_syncase_macro_binding (m)
Return the binding of the macro @var{m}.
@end deffn

@deffn {Scheme Procedure} memoize-expression exp
@deffnx {C Function} scm_memoize_expression (exp)
Memoize the expression @var{exp}.
@end deffn

@deffn {Scheme Procedure} unmemoize-expression m
@deffnx {C Function} scm_unmemoize_expression (m)
Unmemoize the memoized expression @var{m}.
@end deffn

@deffn {Scheme Procedure} memoized-expression-typecode m
@deffnx {C Function} scm_memoized_expression_typecode (m)
Return the typecode from the memoized expression @var{m}.
@end deffn

@deffn {Scheme Procedure} memoized-expression-data m
@deffnx {C Function} scm_memoized_expression_data (m)
Return the data from the memoized expression @var{m}.
@end deffn

@deffn {Scheme Procedure} memoized-typecode sym
@deffnx {C Function} scm_memoized_typecode (sym)
Return the memoized typecode corresponding to the symbol @var{sym}.
@end deffn

@deffn {Scheme Procedure} memoize-variable-access! m mod
@deffnx {C Function} scm_memoize_variable_access_x (m, mod)
Look up and cache the variable that @var{m} will access, returning the variable.
@end deffn

@deffn {Scheme Procedure} module-local-variable module sym
@deffnx {C Function} scm_module_local_variable (module, sym)
Return the variable bound to @var{sym} in @var{module}.  Return @code{#f} is @var{sym} is not bound locally in @var{module}.
@end deffn

@deffn {Scheme Procedure} module-variable module sym
@deffnx {C Function} scm_module_variable (module, sym)
Return the variable bound to @var{sym} in @var{module}.  This may be both a local variable or an imported variable.  Return @code{#f} is @var{sym} is not bound in @var{module}.
@end deffn

@deffn {Scheme Procedure} eval-closure-module eval_closure
@deffnx {C Function} scm_eval_closure_module (eval_closure)
Return the module associated with this eval closure.
@end deffn

@deffn {Scheme Procedure} module-transformer module
@deffnx {C Function} scm_module_transformer (module)
Returns the syntax expander for the given module.
@end deffn

@deffn {Scheme Procedure} module-public-interface module
@deffnx {C Function} scm_module_public_interface (module)
Return the public interface of @var{module}.

If @var{module} has no public interface, @code{#f} is returned.
@end deffn

@deffn {Scheme Procedure} define! sym value
@deffnx {C Function} scm_define (sym, value)
Define @var{sym} to be @var{value} in the current module.Returns the variable itself. Note that this is a procedure, not a macro.
@end deffn

@deffn {Scheme Procedure} module-reverse-lookup module variable
@deffnx {C Function} scm_module_reverse_lookup (module, variable)
Return the symbol under which @var{variable} is bound in @var{module} or @var{#f} if @var{variable} is not visible from @var{module}.  If @var{module} is @code{#f}, then the pre-module obarray is used.
@end deffn

@deffn {Scheme Procedure} cddr x
@deffnx {C Function} scm_cddr (x)

@end deffn

@deffn {Scheme Procedure} make-promise thunk
@deffnx {C Function} scm_make_promise (thunk)
Create a new promise object.

@code{make-promise} is a procedural form of @code{delay}.
These two expressions are equivalent:
@lisp
(delay @var{exp})
(make-promise (lambda () @var{exp}))
@end lisp

@end deffn

@deffn {Scheme Procedure} %get-stack-size
@deffnx {C Function} scm_sys_get_stack_size ()
Return the current thread's C stack size (in Scheme objects).
@end deffn

@deffn {Scheme Procedure} %string-dump str
@deffnx {C Function} scm_sys_string_dump (str)
Returns an association list containing debugging information
for @var{str}. The association list has the following entries.@table @code
@item string
The string itself.
@item start
The start index of the string into its stringbuf
@item length
The length of the string
@item shared
If this string is a substring, it returns its parent string.
Otherwise, it returns @code{#f}
@item read-only
@code{#t} if the string is read-only
@item stringbuf-chars
A new string containing this string's stringbuf's characters
@item stringbuf-length
The number of characters in this stringbuf
@item stringbuf-shared
@code{#t} if this stringbuf is shared
@item stringbuf-wide
@code{#t} if this stringbuf's characters are stored in a
32-bit buffer, or @code{#f} if they are stored in an 8-bit
buffer
@end table
@end deffn

@deffn {Scheme Procedure} %symbol-dump sym
@deffnx {C Function} scm_sys_symbol_dump (sym)
Returns an association list containing debugging information
for @var{sym}. The association list has the following entries.@table @code
@item symbol
The symbol itself
@item hash
Its hash value
@item interned
@code{#t} if it is an interned symbol
@item stringbuf-chars
A new string containing this symbols's stringbuf's characters
@item stringbuf-length
The number of characters in this stringbuf
@item stringbuf-shared
@code{#t} if this stringbuf is shared
@item stringbuf-wide
@code{#t} if this stringbuf's characters are stored in a
32-bit buffer, or @code{#f} if they are stored in an 8-bit
buffer
@end table
@end deffn

@deffn {Scheme Procedure} string-bytes-per-char string
@deffnx {C Function} scm_string_bytes_per_char (string)
Return the bytes used to represent a character in @var{string}.This will return 1 or 4.
@end deffn

@deffn {Scheme Procedure} uniform-vector-element-type v
@deffnx {C Function} scm_uniform_vector_element_type (v)
Return the type of the elements in the uniform vector, @var{v}.
@end deffn

@deffn {Scheme Procedure} uniform-vector-element-size v
@deffnx {C Function} scm_uniform_vector_element_size (v)
Return the number of bytes allocated to each element in the
uniform vector, @var{v}.
@end deffn

@deffn {Scheme Procedure} canonicalize-path path
@deffnx {C Function} scm_canonicalize_path (path)
Return the canonical path of @var{path}. A canonical path has
no @code{.} or @code{..} components, nor any repeated path
separators (@code{/}) nor symlinks.

Raises an error if any component of @var{path} does not exist.
@end deffn

@deffn {Scheme Procedure} getrlimit resource
@deffnx {C Function} scm_getrlimit (resource)
Get a resource limit for this process. @var{resource} identifies the resource,
either as an integer or as a symbol. For example, @code{(getrlimit 'stack)}
gets the limits associated with @code{RLIMIT_STACK}.

@code{getrlimit} returns two values, the soft and the hard limit. If no
limit is set for the resource in question, the returned limit will be @code{#f}.
@end deffn

@deffn {Scheme Procedure} setrlimit resource soft hard
@deffnx {C Function} scm_setrlimit (resource, soft, hard)
Set a resource limit for this process. @var{resource} identifies the resource,
either as an integer or as a symbol. @var{soft} and @var{hard} should be integers,
or @code{#f} to indicate no limit (i.e., @code{RLIM_INFINITY}).

For example, @code{(setrlimit 'stack 150000 300000)} sets the @code{RLIMIT_STACK}
limit to 150 kilobytes, with a hard limit of 300 kB.
@end deffn