Transpiler

Transpiler from PascalABC.NET to C#. Includes transpiler module which performs all logic and a simple web interface to interact with.

Run in docker

To run a docker container with web interface you can use following commands:

docker build . -t transpiler
docker run -p 8000:8000 --rm transpiler

After that you can check localhost:8000.

Known issues

• Operational assignments are not supported.

// ok
var a: integer := 10;
a := a + 1;

// not supported
var a: integer := 10;
a += 1;

• Type hints in variable definitions are always required:

// ok
var a: char := 'a';

// not supported
var a := 'a';

• Inline nested for, while and if statements are not supported

// ok
if true then
begin
    if true then
        print('str');
end;

// not supported
if true then
    if true then
        print('str');

• Boolean operands must be wrapped into brackets

//ok
var b: boolean := (10 < 15) and (5 > 0);

//not supported
var b: boolean := 10 < 15 and 5 > 0;

• Comparison of chars and strings are not valid in generated code

var c: char := 'c';
var s: string := 'str';

//not valid in generated code
var b: boolean := s = c;

• Comparison of strings and chars by <, >, <=, >= are not valid in generated code

//not valid in generated code
var b: boolean := 'str1' > 'str2';

• Number and type of arguments are not checked in function's call

• Base functions are converted by map

//example
write() -> Console.Write()
read() -> Console.Read()

• Functions that are not contained in map converted with the same name

//example
some_function() -> some_function()

Contribute

Requirements: Python 3.10 or above.

Create, activate virtual env and install dependencies:

python -m venv env
source env/bin/activate
pip install -r requirements.txt

It's recommended to set log level to DEBUG when testing. Use

export LOG_LEVEL=DEBUG

before running any of the command below.

Run transpiler module with

python -m transpiler path/to/source/code

e.g.

python -m transpiler examples/supported_syntax.pas

To run web module, install web dependencies first:

pip install -r requirements-web.txt

Then run it with

python -m web --dev

where --dev sets uvicorn config suitable for development, e.g. it configures hot reload.

Before submitting a pull request make sure that your code passes all tests and there are no flake8 linter errors. Check it with

python -m unittest
flake8

Any new feature must be accompanied by new test for this feature.