Module com.maroontress.intexpr

Package com.maroontress.intexpr.impl

Class Operator

java.lang.Object

com.maroontress.intexpr.impl.Operator

All Implemented Interfaces:

Instruction

public final class Operator
extends Object
implements Instruction

The instruction that pops the operand(s) from the stack, executes the function with the operand(s), and pushes the return value to the stack.

Method Summary

Modifier and Type	Method	Description
void	accept(Deque<SyntaxNode> stack)	Interacts with the specified stack of the SyntaxNode object to build a SyntaxTree object.
int	apply(int[] stack, int offset)	Interacts with the specified stack of an integer.
OperatorSpec	getSpec()	Returns the OperatorSpec object of this operator.
static Optional<Operator>	of(com.maroontress.clione.Token token, OperatorType type)	Creates a new Operator object corresponding to the specified token and OperatorType.
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Details

of

public static Optional<Operator> of(com.maroontress.clione.Token token,
 OperatorType type)

Creates a new Operator object corresponding to the specified token and OperatorType.

Parameters:

token - The token corresponding to the operator.

type - The operator type (OperatorType.UNARY or OperatorType.BINARY).

Returns:

The new operator.

getSpec

public OperatorSpec getSpec()

Returns the OperatorSpec object of this operator.

Returns:

The OperatorSpec object.

accept

public void accept(Deque<SyntaxNode> stack)

Interacts with the specified stack of the SyntaxNode object to build a SyntaxTree object.

Specified by:

accept in interface Instruction

Parameters:

stack - The stack of a SyntaxNode object.

apply

public int apply(int[] stack,
 int offset)

Interacts with the specified stack of an integer.

Specified by:

apply in interface Instruction

Parameters:

stack - The stack of an integer.

offset - The position of the top of the stack.

Returns:

The new offset of the top of the stack.

toString

public String toString()

Overrides:

toString in class Object