Script files
Launch
Mélodium scripts can be launched using melodium
command:
melodium main_script.mel
Or if the main script includes a shebang:
./main_script.mel
Recommended shebang being #!/usr/bin/env melodium
.
Hierarchy and inclusion
There are 3 roots when reffering to external elements in Mélodium:
main
, relative to the main script file;core
, relative to the build-in language elements;std
, relative to the standard library.
The local
root can also be used and refers to the current location of the script.
Areas in Mélodium are matching the filesystem hierarchy.
// Import element John from local/foo/bar, coming from file ./foo/bar.mel
use local/foo/bar::John
// Import element Doe from main/baz, coming from file <main dir>/baz.mel
use main/baz::Doe
Note about encoding
Mélodium script files are plain UTF-8 text, without byte order mark. This choice is made for three main reasons:
- a choice on encoding, even arbitrary, is better than no choice;
- Unicode provides the wider support for any characters from all human languages and scripts, existing and future, ensuring continuity;
- the Mélodium engine is implemented in Rust, itself natively representing text as UTF-8.