Find meta-information about File. If Spec resolves to a Prolog
source file, this predicate reads all terms upto the first term that
is not a directive. If Spec resolves to a SWI-Prolog `.qlf` file, it
extracts part of the information from the QLF file. It uses the
module and meta_predicate directives to assemble the information in
Options. Options processed:
- path(-Path)
- Path is the full path name of the referenced file. If Spec
resolves to a .qlf file, Path is the name of the embedded
Prolog file.
- module(-Module)
- Module is the module defines in Spec.
- exports(-Exports)
- Exports is a list of predicate indicators and operators
collected from the module/2 term and reexport declarations.
- public -Public
- Public declarations of the file. Currently always
[] for
.qlf files.
- meta(-Meta)
- Meta is a list of heads as they appear in meta_predicate/1
declarations. Currently always
[] for .qlf files.
- silent(+Boolean)
- Do not print any messages or raise exceptions on errors.
The information collected by this predicate is cached. The cached
data is considered valid as long as the modification time of the
file does not change.
- Arguments:
-
| Source | - is the file from which Spec is referenced. |