Function

Summary

Loads a fasl file created by dump-forms-to-file or with-output-to-fasl-file.

Package

system

Signature

load-data-file file &rest args => result

Arguments

file

A pathname designator.

args

Arguments passed to load .

Values

result

A generalized boolean.

Description

The function load-data-file loads a fasl file created by dump-forms-to-file or with-output-to-fasl-file.

load-data-file has the same semantics as load , but treats fasl files differently:

• it cannot load a fasl generated by compile-file.
• it allows loading of fasls generated by dump-forms-to-file or with-output-to-fasl-file, including those generated by a previous version of LispWorks.

load-data-file is intended to work with data files generated in a previous version of LispWorks. In particular you can load data files generated by LispWorks 4.3, LispWorks 4.4 and LispWorks 5.0 into LispWorks 5.1.

Fasl files generated by dump-forms-to-file or with-output-to-fasl-file must only be loaded using load-data-file .

The pathname specified by file must be recognized as a fasl file type, otherwise load-data-file will load it as a text file.

Compatibility Note

The default fasl file type in LispWorks 5.0 and later differs to LispWorks 4.x on Windows and Linux, as described in compile-file. Therefore you may need to do something like this to ensure your LispWorks 4.x data file is recognized as a fasl file when loading it in this version of LispWorks:

(let ((sys::*binary-file-types* 

       (cons "fsl" sys::*binary-file-types*)))

  (sys:load-data-file "C:/temp/data.fsl"))

Compatibility Note

The fixnum type in LispWorks 5.0 and later is larger than in LispWorks 4.x on Windows and Linux. A bignum dumped in a LispWorks 4.x data file will be loaded as a fixnum in LispWorks 5.0 and later if its value is within the fixnum range.

See also

dump-forms-to-file
with-output-to-fasl-file