A small command line application and Dassie compiler extension allowing you to embed Dassie expressions into any file.
git clone https://github.com/jgh07/Dassie.Preprocessor.git
cd Dassie.Preprocessor
build
On Linux, you'll need to manually build using the dotnet command. You will probably run into issues either way, since the Dassie compiler codebase is sadly still pretty Windows-centric.
After building, you can either use the application directly using the pp command, or import it as a compiler extension and run it as dc pp:
dc package import build/pp.dll
Here is an example file with embedded Dassie expressions:
#head {
import System
}
#members {
Add (x: int32, y: int32) = x + y
GetBalance (): int32 = 3
}
The ultimate answer to the great question of life, the universe and everything is ${21 * 2}.
Today is ${DateTime.Now}.
I have €${GetBalance} in my bank account.
Adding 5 and 10 together yields ${Add 5, 10}.
Assuming the above text is stored in a file called example.txt, running the command dc pp example.txt will yield an output file called example.out.txt with the following content (at the time of writing):
The ultimate answer to the great question of life, the universe and everything is 42.
Today is 01.09.2024 23:41:25.
I have €3 in my bank account.
Adding 5 and 10 together yields 15.
A template file contains 3 elements:
- Plain text
- Dassie expressions:
${ ... } - Named sections:
#<Name> { ... }
Sections contain Dassie source code, but are not included in the output file. They are used to define functions (in the members section) and declare imports (in the head section). Inside of a section, closing braces need to be escaped using two braces: }}.
Currently, the tool does not support any external references. I will add support for Dassie project files (dsconfig.xml) soon.