pombredanne / bamboolean

Are you bamboozled by Booleans? Let Bamboolean interpret them.

Bamboolean interpreter

Supported from Python >= 3.4

Implementation of Bamboolean - Boolean Logic Language

Bamboolean is a simple language that consumes array of pre-defined variables, and returns boolean value if constraints on these variables are met.

Exemplary expressions in the language

Features

• Case in-sensitive variable names and keywords
• Comparison operators
• Logic AND / OR
• Expressions with parentheses
• Types: Floats, ints and string

Operators associativity

All operators are lef-associative

Operators precedence (the higher number the higher priority)

1. OR
2. AND
3. == | != | < | <= | > | >=

Testing

Run tests:

`python run_tests.py`

BNF Grammar

expr : simple_expr (OR simple_expr)*

simple_expr : term (AND term)*

term : constraint
     | LPAREN expr RPAREN

constraint : variable relational_operator value

value : INTEGER
      | FLOAT
      | STRING
      | BOOL

variable: ID

relational_operator : ( EQ | NE | LT | LTE | GT | GTE )