water.rapids.ast

Class AstRoot

java.lang.Object

water.Iced<AstRoot>

water.rapids.ast.AstRoot

All Implemented Interfaces:

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

Direct Known Subclasses:

AstExec, AstFrame, AstParameter, AstPrimitive, AstRow

public abstract class AstRoot
extends Iced<AstRoot>

Rapids expression Abstract Syntax Tree.

Subclasses define the program semantics

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static java.util.HashMap<java.lang.String,AstParameter>	CONSTS
static java.util.HashMap<java.lang.String,AstPrimitive>	PRIMS

Constructor Summary

Constructors

Constructor and Description
AstRoot()

Method Summary

Methods

Modifier and Type	Method and Description
Val	apply(Env env, Env.StackHelp stk, AstRoot[] asts)
int[]	columns(java.lang.String[] names)
abstract java.lang.String	description()
abstract java.lang.String	example()
abstract Val	exec(Env env)
abstract int	nargs()
static AstId	newAstFrame(Frame f)
static AstStr	newAstStr(java.lang.String s)
abstract java.lang.String	str()
java.lang.String	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

Field Detail

PRIMS

public static final java.util.HashMap<java.lang.String,AstPrimitive> PRIMS

CONSTS

public static final java.util.HashMap<java.lang.String,AstParameter> CONSTS

Constructor Detail

AstRoot

public AstRoot()

Method Detail

exec

public abstract Val exec(Env env)

apply

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

str

public abstract java.lang.String str()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

example

public abstract java.lang.String example()

description

public abstract java.lang.String description()

nargs

public abstract int nargs()

columns

public int[] columns(java.lang.String[] names)

newAstFrame

public static AstId newAstFrame(Frame f)

newAstStr

public static AstStr newAstStr(java.lang.String s)