DenkInterpreter

Interpreter Made for Pascal Like Language in Python. Ships with text editor ironically made in java. DenkInterpreter on github

Collaborators

• Kaushal Patil
• Dhruvil Dave

DenkInterpreter CLI

for support on langugae see DENK.md/DENK.pdf

requirements

• Python3
• Java min JDK8,optimun JDK 11 [For DenkEditor(GUI)]

for instruction on running Denk Interpreter text editor see READMEGUI.md/READMEGUI.pdf

How to run InterpreterCLI

To run on any of the test

• Linux

python3 interpreter.py test-10.pas

• Windows (with python installed as python3)

python interpreter.py test-10.pas

To see call stack

• Linux

python3 interpreter.py test-10.pas  --stack

• Windows (with python installed as python3)

python interpreter.py test-10.pas --stack

About tests:

• test-1 : to check basic working of math abilities language
• test-2 : to check basic defining of procedures in language
• test-3 : to check calling of procedures in language
• test-4 : to check nested procedures
• test-5 : checks boolean operations and datatype
• test-6 : to check conditionals of the lanaguage
• test-7 : to check looping construct of the language
• test-8 : to check input abilities of language
• test-9 : to check string support in the language
• test-10 : to check bitwise operator support of the language
• test-function : to check function declration and calling in langauge
• test-error-1 : to check error handling abilities of langauge

executed test results are saved in testresults directory

To create the ast of the program (using graphviz library) run:

• Linux

python3 visualise.py test-10.pas > test-10.dot && dot -Tpng -o test-10.png test-10.dot

• Windows (with pyhton installed as python3)

python visualise.py test-10.pas > test-10.dot && dot -Tpng -o test-10.png test-10.dot

example code that gives an idea about the language

program Main;
    var x, y : integer;
    procedure PlusXAndY();
        procedure PlusYAndX(a: integer; b: integer);
        begin
            x := x + a;
            y := y + b;
        end;
    begin
        x := x + 1;
        y := y + 1;
        PlusYAndX(2,3);
    end;
    function PlusBy1(a: integer): integer;
    begin
        PlusBy1 := a + 1;
    end;
begin { Main }
    x := 1;
    y := 0;
    PlusXAndY();
    x := PlusBy1(x);
    var a;
    var b;
    var b2;
    var c;
    a := 0;
    b := 0;
    b2 := 0;
    c := 1;
    while a < 10 do
    begin
        a := a + 1;
        while (b < 20) and (b >= 0) do
        begin
            b := b + 1;
            if (b > 10) then
                continue;
            b2 := b2 + 1;
        end;
        while (c < 30) and (c > 0) do
        begin
            if c >= 15 then
                break;
            c := c + 1;
        end;
    end;
    var x;
    var y;
    var z;
    var x=a|b;
    var y=~b2;
    var z=c<<2;

    writeln('x=',x,'y=',y,'z=',z);
end.  { Main }

example image of tree