Logics

Handle logic boolean function

• Obtain a callable object from a descriptive String or a litteral expression
• Obtain the truth table for a logic function
• Get a representation as a sum of minterms or a product of maxterms

LogicFunction

Main interface with different implementation listed in the next sections.

List of methods required by this interface :

• get(boolean... vs) computes the result of the function for some inputs (NB: the order of the input must follow the alphabetical order)
• getNames() returns a String array where each element is only one character and represent the name of the corresponding variable
• getTruthTable() returns a boolean array of all value of the function for the 2^n possibles input combination
• getTruthTableRepresentation() returns a formatted String representing the truth-table
• expressAsSumOfMinterms() returns a String that can be used to create a new function that will behave exactly as this one using the sum of the minterms
• getMinTermsIndex() returns the indexs corresponding to the minterms of this function
• expressAsProductOfMaxterms() returns a String that can be used to create a new function that will behave exactly as this one using the product of the maxterms
• getMaxTermsIndex()returns the indexs corresponding to the maxterms of this function

LogicChain

The constructor of this class takes a String argument storing the description of the function using letters (a-z) for variables and litterals (0 or 1) and limited boolean operators (&, *, |, +, ', !). The description is parsed with a Parser object and throws RuntimeException is the String isn't valid.

The object is built using LogicNode objects representing either a constant, a variable or a binary / unary operator.

LogicTable

The constructor of this class is similar to the constructor of the LogicChain class, it first create a LogicNode object and then compute and store the truth table.

CallableHandler

The constructor expects a CallableLogic object and store it. CallableHandler objects do not print names unless provided by the setNames method.

CallableLogic

Functional interface returning a boolean value for a list of boolean inputs.