org.scijava.parsington.eval

Interface StackEvaluator

All Superinterfaces:

Evaluator

All Known Subinterfaces:

StandardStackEvaluator

All Known Implementing Classes:

DefaultStackEvaluator

public interface StackEvaluator
extends Evaluator

Interface for stack-based expression evaluators, operating on postfix queues.

Author:

Curtis Rueden

Method Summary

Modifier and Type	Method and Description
default Object	evaluate(LinkedList<Object> queue) Evaluates a postfix token queue.
default Object	evaluate(String expression) Evaluates an infix expression.
default Object	evaluate(SyntaxTree syntaxTree) Evaluates a syntax tree.
Object	execute(Operator op, Deque<Object> stack) Executes an operation with the specified value stack.

Methods inherited from interface org.scijava.parsington.eval.Evaluator

get, getParser, isStrict, set, setAll, setStrict, value, var

Method Detail

execute

Object execute(Operator op,
               Deque<Object> stack)

Executes an operation with the specified value stack.

Parameters:

op - The operator to execute.

stack - The value stack containing the arguments to pass.

Returns:

The result of the operation.

evaluate

default Object evaluate(String expression)

Description copied from interface: Evaluator

Evaluates an infix expression.

Specified by:

evaluate in interface Evaluator

Parameters:

expression - The infix expression to evaluate.

Returns:

The result of the evaluation.

evaluate

default Object evaluate(SyntaxTree syntaxTree)

Description copied from interface: Evaluator

Evaluates a syntax tree.

Specified by:

evaluate in interface Evaluator

Parameters:

syntaxTree - The syntax tree to evaluate.

Returns:

The result of the evaluation.

evaluate

default Object evaluate(LinkedList<Object> queue)

Description copied from interface: Evaluator

Evaluates a postfix token queue.

Specified by:

evaluate in interface Evaluator

Parameters:

queue - The postfix token queue to evaluate.

Returns:

The result of the evaluation.