com.helger.jcodemodel

Class JLambda

java.lang.Object

com.helger.jcodemodel.JLambda

All Implemented Interfaces:

IJExpression, IJGenerable, IJObject

public class JLambda
extends Object
implements IJExpression

This is a single Java 8 lambda expression. It consists of 0-n parameters and a body statement. For example in (a, b) -> a + b "a" and "b" are parameters and "a + b" is the body statement.

Since:

2.7.10

Author:

Philip Helger

Constructor Summary

Constructors

Constructor and Description
JLambda() Create an empty lambda without any parameter.

Method Summary

Modifier and Type	Method and Description
JLambdaParam	addParam(AbstractJType aType, String sName) Add a parameter with a type name.
JLambdaParam	addParam(String sName) Add a parameter without a type name.
JLambdaBlock	body()
void	generate(JFormatter f)
int	paramCount()
List<JLambdaParam>	params()
static JLambda	simple(IJExpression aExpr) Create a new no argument lambda that just returns the provided expression.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.helger.jcodemodel.IJExpression

_instanceof, band, bor, cand, complement, component, component, component0, cor, decr, div, div, div, div, div, eq, eq0, eqNull, gt, gt, gt0, gte, gte, gte0, incr, invoke, invoke, lt, lt, lt0, lte, lte, lte0, minus, minus, minus, minus, minus, minus, mod, mod, mod, mul, mul, mul, mul, mul, ne, ne0, neNull, not, plus, plus, plus, plus, plus, plus, postdecr, postincr, predecr, preincr, ref, ref, shl, shl, shr, shr, shrz, shrz, xor

Constructor Detail

JLambda

public JLambda()

Create an empty lambda without any parameter.

Method Detail

addParam

@Nonnull
public JLambdaParam addParam(@Nonnull
                                       String sName)

Add a parameter without a type name.

Parameters:

sName - The variable name to use. May not be null.

Returns:

The created JLambdaParam object.

addParam

@Nonnull
public JLambdaParam addParam(@Nullable
                                       AbstractJType aType,
                                       @Nonnull
                                       String sName)

Add a parameter with a type name.

Parameters:

aType - The Type of the parameter. May be null.

sName - The variable name to use. May not be null.

Returns:

The created JLambdaParam object.

params

@Nonnull
public List<JLambdaParam> params()

Returns:

An unmodifiable list with all parameters present. Never null.

paramCount

@Nonnegative
public int paramCount()

body

@Nonnull
public JLambdaBlock body()

generate

public void generate(@Nonnull
                     JFormatter f)

Specified by:

generate in interface IJGenerable

simple

@Nonnull
public static JLambda simple(@Nonnull
                                       IJExpression aExpr)

Create a new no argument lambda that just returns the provided expression.

Parameters:

aExpr - Expression to be returned. May not be null.

Returns:

Never null.

Since:

3.0.0