KEKW lang interpreter

Language examples

KEKW programs examples are located in the ./kekw-examples.

Implementation details

Interpreter uses hand-written lexer which is based on the Java's StreamTokenizer.

Parser was generated using GNU Bison 3.7.1. YACC file for generation with detailed grammar description can be found at ./src/parser/parser.y.

Run interpreter for some .kekw file

./scripts/run.sh
./scripts/run.sh ./kekw-examples/prog.kekw  

To run all tests:

./scripts/run_tests.sh

Both commands support verbose option for enhanced logging.

Generate java class for parser

./scripts/generate_parser.sh

Extension of specification

Comments

All symbols on the line after the symbol # will be ignored by the interpreter.

String

String is any sequence of characters enclosed in double quotes.

Print

Built-in function that takes one argument. The function prints the argument to the user terminal. If the argument is a Literal, it prints the value of that literal. In any other case, it prints the representation of the lexem in AST.