Package net.hydromatic.morel.ast

Class Core.Literal

java.lang.Object

net.hydromatic.morel.ast.AstNode

net.hydromatic.morel.ast.Core.BaseNode

net.hydromatic.morel.ast.Core.Exp

net.hydromatic.morel.ast.Core.Literal

Enclosing class:

Core

public static class Core.Literal
extends Core.Exp

Code of a literal (constant).

Field Summary

Fields

Modifier and Type	Field	Description
final Comparable	value

Fields inherited from class net.hydromatic.morel.ast.Core.Exp

type

Fields inherited from class net.hydromatic.morel.ast.AstNode

op, pos

Constructor Summary

Constructors

Constructor	Description
Literal(Op op, Type type, Comparable value)	Creates a Literal.

Method Summary

Modifier and Type	Method	Description
Core.Exp	accept(Shuttle shuttle)	Accepts a shuttle, calling the Shuttle.visit(net.hydromatic.morel.ast.Ast.Literal) method appropriate to the type of this node, and returning the result.
void	accept(Visitor visitor)	Accepts a visitor, calling the Shuttle.visit(net.hydromatic.morel.ast.Ast.Literal) method appropriate to the type of this node, and returning the result.
boolean	equals(Object o)
int	hashCode()
boolean	isConstant()	Returns whether this expression is a constant.
(package private) AstWriter	unparse(AstWriter w, int left, int right)
<C> C	unwrap(Class<C> clazz)	Returns the value of this literal as a given class, or throws ClassCastException.
(package private) static Comparable	wrap(Core.Exp exp, Object value)

Methods inherited from class net.hydromatic.morel.ast.Core.Exp

arg, forEachArg, isCallTo, type

Methods inherited from class net.hydromatic.morel.ast.AstNode

toString, unparse

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

value

public final Comparable value

Constructor Details

Literal

Literal(Op op,
 Type type,
 Comparable value)

Creates a Literal.

Method Details

wrap

static Comparable wrap(Core.Exp exp,
 Object value)

unwrap

public <C> C unwrap(Class<C> clazz)

Returns the value of this literal as a given class, or throws ClassCastException. If the class is not Comparable, the value will be in a wrapper.

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

accept

public Core.Exp accept(Shuttle shuttle)

Description copied from class: AstNode

Accepts a shuttle, calling the Shuttle.visit(net.hydromatic.morel.ast.Ast.Literal) method appropriate to the type of this node, and returning the result.

Specified by:

accept in class Core.Exp

accept

public void accept(Visitor visitor)

Description copied from class: AstNode

Accepts a visitor, calling the Shuttle.visit(net.hydromatic.morel.ast.Ast.Literal) method appropriate to the type of this node, and returning the result.

Overrides:

accept in class Core.BaseNode

unparse

AstWriter unparse(AstWriter w,
 int left,
 int right)

Specified by:

unparse in class AstNode

isConstant

public boolean isConstant()

Description copied from class: Core.Exp

Returns whether this expression is a constant.

Examples include literals 1, true, constructors applied to constants, records and tuples whose arguments are constant.

Overrides:

isConstant in class Core.Exp