water.rapids.ast.prims.operators

Class AstBinOp

java.lang.Object

water.Iced<AstRoot>

water.rapids.ast.AstRoot

water.rapids.ast.AstPrimitive

water.rapids.ast.prims.operators.AstBinOp

All Implemented Interfaces:

java.io.Externalizable, java.io.Serializable, java.lang.Cloneable, Freezable<AstRoot>

Direct Known Subclasses:

AstAnd, AstDiv, AstEq, AstGe, AstGt, AstIntDiv, AstIntDivR, AstLAnd, AstLe, AstLOr, AstLt, AstMod, AstModR, AstMul, AstNe, AstOr, AstPlus, AstPow, AstRound, AstSignif, AstSub

public abstract class AstBinOp
extends AstPrimitive

Binary operator. Subclasses auto-widen between scalars and Frames, and have exactly two arguments

See Also:

Serialized Form

Field Summary

Fields inherited from class water.rapids.ast.AstRoot

CONSTS, PRIMS

Constructor Summary

Constructors

Constructor and Description
AstBinOp()

Method Summary

Methods

Modifier and Type	Method and Description
Val	apply(Env env, Env.StackHelp stk, AstRoot[] asts)
java.lang.String[]	args()
boolean	categoricalOK()
ValFrame	frame_op_scalar(Frame fr, double d) Auto-widen the scalar to every element of the frame
int	nargs()
abstract double	op(double l, double r) Override to express a basic math primitive
Val	prim_apply(Val left, Val rite)
double	str_op(BufferedString l, BufferedString r)

Methods inherited from class water.rapids.ast.AstPrimitive

description, example, exec

Methods inherited from class water.rapids.ast.AstRoot

columns, newAstFrame, newAstStr, str, toString

Methods inherited from class water.Iced

asBytes, clone, copyOver, frozenType, read, readExternal, readJSON, reloadFromBytes, toJsonString, write, writeExternal, writeJSON

Methods inherited from class java.lang.Object

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

Constructor Detail

AstBinOp

public AstBinOp()

Method Detail

args

public java.lang.String[] args()

Specified by:

args in class AstPrimitive

nargs

public int nargs()

Specified by:

nargs in class AstRoot

apply

public Val apply(Env env,
        Env.StackHelp stk,
        AstRoot[] asts)

Overrides:

apply in class AstRoot

prim_apply

public Val prim_apply(Val left,
             Val rite)

op

public abstract double op(double l,
        double r)

Override to express a basic math primitive

str_op

public double str_op(BufferedString l,
            BufferedString r)

frame_op_scalar

public ValFrame frame_op_scalar(Frame fr,
                       double d)

Auto-widen the scalar to every element of the frame

categoricalOK

public boolean categoricalOK()