Package org.linuxforhealth.fhir.database.utils.query.node

Class LeftParenExpNode

java.lang.Object

org.linuxforhealth.fhir.database.utils.query.node.LeftParenExpNode

All Implemented Interfaces:

ExpNode

public class LeftParenExpNode
extends java.lang.Object
implements ExpNode

Represents a left paren when parsing an expression

Constructor Summary

Constructors

Constructor	Description
LeftParenExpNode()

Method Summary

Modifier and Type	Method	Description
boolean	isLeftParen()	Is this expression node a left-paren
void	popOperands(java.util.Stack<ExpNode> stack)	Read the operands from the stack
int	precedence()	Precedence of this expression node.
<T> T	visit(ExpNodeVisitor<T> visitor)	Generic evaluation visitor

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.linuxforhealth.fhir.database.utils.query.node.ExpNode

isOperand, isOperator, isRightParen

Constructor Detail

LeftParenExpNode

public LeftParenExpNode()

Method Detail

visit

public <T> T visit(ExpNodeVisitor<T> visitor)

Description copied from interface: ExpNode

Generic evaluation visitor

Specified by:

visit in interface ExpNode

Returns:

precedence

public int precedence()

Description copied from interface: ExpNode

Precedence of this expression node. Used to parse the expression into the correct tree. We use 0 to represent the highest precedence

Specified by:

precedence in interface ExpNode

Returns:

popOperands

public void popOperands(java.util.Stack<ExpNode> stack)

Description copied from interface: ExpNode

Read the operands from the stack

Specified by:

popOperands in interface ExpNode

isLeftParen

public boolean isLeftParen()

Description copied from interface: ExpNode

Is this expression node a left-paren

Specified by:

isLeftParen in interface ExpNode

Returns: