com.rpl.rama

Class Expr

java.lang.Object

com.rpl.rama.Expr

public class Expr
extends java.lang.Object

Specifies an expression to be used in an argument position in dataflow code. The expression executes like a nested each call that emits one result to out.

Example: Block.each(Ops.PLUS, new Expr(Ops.TIMES, 2, 3), 1).out("*res") computes 2 * 3 + 1 and stores result in "*res".

See Also:

Dataflow documentation

Constructor Summary

Constructors

Constructor and Description
Expr(com.rpl.rama.impl.NativeAnyArityRamaOperation op, java.lang.Object... args) Constructs an expression for built-in operation that takes any number of arguments
Expr(RamaFunction0<R> op) Constructs an expression with zero arguments
Expr(RamaFunction1<T0,R> op, java.lang.Object arg0) Constructs an expression with one argument
Expr(RamaFunction2<T0,T1,R> op, java.lang.Object arg0, java.lang.Object arg1) Constructs an expression with two arguments
Expr(RamaFunction3<T0,T1,T2,R> op, java.lang.Object arg0, java.lang.Object arg1, java.lang.Object arg2) Constructs an expression with three arguments
Expr(RamaFunction4<T0,T1,T2,T3,R> op, java.lang.Object arg0, java.lang.Object arg1, java.lang.Object arg2, java.lang.Object arg3) Constructs an expression with four arguments
Expr(RamaFunction5<T0,T1,T2,T3,T4,R> op, java.lang.Object arg0, java.lang.Object arg1, java.lang.Object arg2, java.lang.Object arg3, java.lang.Object arg4) Constructs an expression with five arguments
Expr(RamaFunction6<T0,T1,T2,T3,T4,T5,R> op, java.lang.Object arg0, java.lang.Object arg1, java.lang.Object arg2, java.lang.Object arg3, java.lang.Object arg4, java.lang.Object arg5) Constructs an expression with six arguments
Expr(RamaFunction7<T0,T1,T2,T3,T4,T5,T6,R> op, java.lang.Object arg0, java.lang.Object arg1, java.lang.Object arg2, java.lang.Object arg3, java.lang.Object arg4, java.lang.Object arg5, java.lang.Object arg6) Constructs an expression with seven arguments
Expr(RamaFunction8<T0,T1,T2,T3,T4,T5,T6,T7,R> op, java.lang.Object arg0, java.lang.Object arg1, java.lang.Object arg2, java.lang.Object arg3, java.lang.Object arg4, java.lang.Object arg5, java.lang.Object arg6, java.lang.Object arg7) Constructs an expression with eight arguments

Method Summary

Modifier and Type	Method and Description
java.util.List	getArgs()
java.lang.Object	getOp()

Methods inherited from class java.lang.Object

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

Constructor Detail

Expr

public Expr(RamaFunction0<R> op)

Constructs an expression with zero arguments

Expr

public Expr(RamaFunction1<T0,R> op,
            java.lang.Object arg0)

Constructs an expression with one argument

Expr

public Expr(RamaFunction2<T0,T1,R> op,
            java.lang.Object arg0,
            java.lang.Object arg1)

Constructs an expression with two arguments

Expr

public Expr(RamaFunction3<T0,T1,T2,R> op,
            java.lang.Object arg0,
            java.lang.Object arg1,
            java.lang.Object arg2)

Constructs an expression with three arguments

Expr

public Expr(RamaFunction4<T0,T1,T2,T3,R> op,
            java.lang.Object arg0,
            java.lang.Object arg1,
            java.lang.Object arg2,
            java.lang.Object arg3)

Constructs an expression with four arguments

Expr

public Expr(RamaFunction5<T0,T1,T2,T3,T4,R> op,
            java.lang.Object arg0,
            java.lang.Object arg1,
            java.lang.Object arg2,
            java.lang.Object arg3,
            java.lang.Object arg4)

Constructs an expression with five arguments

Expr

public Expr(RamaFunction6<T0,T1,T2,T3,T4,T5,R> op,
            java.lang.Object arg0,
            java.lang.Object arg1,
            java.lang.Object arg2,
            java.lang.Object arg3,
            java.lang.Object arg4,
            java.lang.Object arg5)

Constructs an expression with six arguments

Expr

public Expr(RamaFunction7<T0,T1,T2,T3,T4,T5,T6,R> op,
            java.lang.Object arg0,
            java.lang.Object arg1,
            java.lang.Object arg2,
            java.lang.Object arg3,
            java.lang.Object arg4,
            java.lang.Object arg5,
            java.lang.Object arg6)

Constructs an expression with seven arguments

Expr

public Expr(RamaFunction8<T0,T1,T2,T3,T4,T5,T6,T7,R> op,
            java.lang.Object arg0,
            java.lang.Object arg1,
            java.lang.Object arg2,
            java.lang.Object arg3,
            java.lang.Object arg4,
            java.lang.Object arg5,
            java.lang.Object arg6,
            java.lang.Object arg7)

Constructs an expression with eight arguments

Expr

public Expr(com.rpl.rama.impl.NativeAnyArityRamaOperation op,
            java.lang.Object... args)

Constructs an expression for built-in operation that takes any number of arguments

Method Detail

getOp

public java.lang.Object getOp()

getArgs

public java.util.List getArgs()