com.alibaba.qlexpress4.runtime.instruction

Class GetFieldInstruction

java.lang.Object

com.alibaba.qlexpress4.runtime.instruction.QLInstruction

com.alibaba.qlexpress4.runtime.instruction.GetFieldInstruction

public class GetFieldInstruction
extends QLInstruction

Operation: get specified field of object on the top of stack Input: 1 Output: 1

Author: DQinYuan

Field Summary

Fields inherited from class com.alibaba.qlexpress4.runtime.instruction.QLInstruction

errorReporter

Constructor Summary

Constructors

Constructor and Description
GetFieldInstruction(ErrorReporter errorReporter, java.lang.String fieldName, boolean optional)

Method Summary

Modifier and Type	Method and Description
QResult	execute(QContext qContext, QLOptions qlOptions)
java.lang.String	getFieldName()
void	println(int index, int depth, java.util.function.Consumer<java.lang.String> debug)
int	stackInput()
int	stackOutput()

Methods inherited from class com.alibaba.qlexpress4.runtime.instruction.QLInstruction

getErrorReporter

Methods inherited from class java.lang.Object

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

Constructor Detail

GetFieldInstruction

public GetFieldInstruction(ErrorReporter errorReporter,
                           java.lang.String fieldName,
                           boolean optional)

Method Detail

execute

public QResult execute(QContext qContext,
                       QLOptions qlOptions)

Specified by:

execute in class QLInstruction

stackInput

public int stackInput()

Specified by:

stackInput in class QLInstruction

Returns:

input size

stackOutput

public int stackOutput()

Specified by:

stackOutput in class QLInstruction

Returns:

output size

println

public void println(int index,
                    int depth,
                    java.util.function.Consumer<java.lang.String> debug)

Specified by:

println in class QLInstruction

getFieldName

public java.lang.String getFieldName()