Package dev.cel.common

Enum Operator

java.lang.Object

java.lang.Enum<Operator>

dev.cel.common.Operator

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<Operator>

public enum Operator
extends java.lang.Enum<Operator>

Package-private enumeration of Common Expression Language operators.

Equivalent to operators.

Enum Constant Summary

Enum Constants

Enum Constant	Description
ADD
ALL
CONDITIONAL
DIVIDE
EQUALS
EXISTS
EXISTS_ONE	Deprecated.
EXISTS_ONE_NEW
FILTER
GREATER
GREATER_EQUALS
HAS
IN
INDEX
LESS
LESS_EQUALS
LOGICAL_AND
LOGICAL_NOT
LOGICAL_OR
MAP
MODULO
MULTIPLY
NEGATE
NOT_EQUALS
NOT_STRICTLY_FALSE
OLD_IN	Deprecated.
OLD_NOT_STRICTLY_FALSE	Deprecated.
OPTIONAL_INDEX
OPTIONAL_SELECT
SUBTRACT

Method Summary

Modifier and Type	Method	Description
static java.util.Optional<Operator>	find(java.lang.String text)	Lookup an operator by its unmangled name, as used with the source text of an expression.
static java.util.Optional<Operator>	findReverse(java.lang.String op)	Lookup an operator by its mangled name (ex: _&&_), as used within the AST.
java.lang.String	getFunction()	Returns the mangled operator name, as used within the AST.
static java.util.Optional<java.lang.String>	lookupBinaryOperator(java.lang.String op)	Looks up the associated binary operator based on its function name (Ex: _||_ -> ||)
static int	lookupPrecedence(java.lang.String op)	Returns the precedence of the operator.
static java.util.Optional<java.lang.String>	lookupUnaryOperator(java.lang.String op)	Looks up the associated unary operator based on its function name (Ex: !_ -> !)
static Operator	valueOf(java.lang.String name)	Returns the enum constant of this type with the specified name.
static Operator[]	values()	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

CONDITIONAL

public static final Operator CONDITIONAL

LOGICAL_AND

public static final Operator LOGICAL_AND

LOGICAL_OR

public static final Operator LOGICAL_OR

LOGICAL_NOT

public static final Operator LOGICAL_NOT

EQUALS

public static final Operator EQUALS

NOT_EQUALS

public static final Operator NOT_EQUALS

LESS

public static final Operator LESS

LESS_EQUALS

public static final Operator LESS_EQUALS

GREATER

public static final Operator GREATER

GREATER_EQUALS

public static final Operator GREATER_EQUALS

ADD

public static final Operator ADD

SUBTRACT

public static final Operator SUBTRACT

MULTIPLY

public static final Operator MULTIPLY

DIVIDE

public static final Operator DIVIDE

MODULO

public static final Operator MODULO

NEGATE

public static final Operator NEGATE

INDEX

public static final Operator INDEX

HAS

public static final Operator HAS

ALL

public static final Operator ALL

EXISTS

public static final Operator EXISTS

EXISTS_ONE

@Deprecated
public static final Operator EXISTS_ONE

Deprecated.

EXISTS_ONE_NEW

public static final Operator EXISTS_ONE_NEW

MAP

public static final Operator MAP

FILTER

public static final Operator FILTER

NOT_STRICTLY_FALSE

public static final Operator NOT_STRICTLY_FALSE

IN

public static final Operator IN

OPTIONAL_INDEX

public static final Operator OPTIONAL_INDEX

OPTIONAL_SELECT

public static final Operator OPTIONAL_SELECT

OLD_NOT_STRICTLY_FALSE

@Deprecated
public static final Operator OLD_NOT_STRICTLY_FALSE

Deprecated.

OLD_IN

@Deprecated
public static final Operator OLD_IN

Deprecated.

Method Detail

values

public static Operator[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (Operator c : Operator.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static Operator valueOf(java.lang.String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

java.lang.IllegalArgumentException - if this enum type has no constant with the specified name

java.lang.NullPointerException - if the argument is null

getFunction

public java.lang.String getFunction()

Returns the mangled operator name, as used within the AST.

find

public static java.util.Optional<Operator> find(java.lang.String text)

Lookup an operator by its unmangled name, as used with the source text of an expression.

findReverse

public static java.util.Optional<Operator> findReverse(java.lang.String op)

Lookup an operator by its mangled name (ex: _&&_), as used within the AST.

lookupPrecedence

public static int lookupPrecedence(java.lang.String op)

Returns the precedence of the operator.

Returns:

Integer value describing precedence. Higher value means higher precedence. Returns 0 if the operator is not found.

lookupUnaryOperator

public static java.util.Optional<java.lang.String> lookupUnaryOperator(java.lang.String op)

Looks up the associated unary operator based on its function name (Ex: !_ -> !)

lookupBinaryOperator

public static java.util.Optional<java.lang.String> lookupBinaryOperator(java.lang.String op)

Looks up the associated binary operator based on its function name (Ex: _||_ -> ||)