LOGO,TURTLE like interpreter , built on top of java for learning and practical implementation of mechanism of a interpreter.
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1. Mini error suggestor(Partially done)
2. Work on parser

1.Simple doo lexer ,for tokenizing source code.

frd:70; //Move doo forward 70 units , making 0 degree angle with Y-axis(normal on x axis)(Default direction)
bkd:20; //Move backwards, towards -y axis ,0 degree with Y axis
rt:90; //turn right, making 90 degree agle wrt y-axis , rt:-90; or rt:270 == lt:90;
frd:50;
lt; //turn left , making 90 degree angle wrt x-axis(default angle values resp. to direction)

Output: Taking 1 '|' = 10 UNIT AND '--' = 10 UNIT

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• Java

• Book : COMPILERS(by Aho|Lam also known as the dragon book)