operators

Documentation

Overview

package operators defines constant operator names and helper functions for identifying the operator and its kind.

Index

• Constants
• func Find(text string) (string, bool)
• func IsRestriction(op string) bool

Constants

const (
	Sequence   = "_sequence_" // Sequence of conjunctions.
	LogicalAnd = "_&&_"       // Conjunction operator (a AND b).
	LogicalOr  = "_||_"       // Disjunction operator (a OR b).
	LogicalNot = "_!"         // Negation using the keyword NOT
	Negate     = "-_"         // Negation using the minus
	Index      = "_[_]"       // Index operation on a map or list.

	// Restriction operations.
	Global        = "_global_"
	Has           = "_:_"
	Equals        = "_==_"
	Greater       = "_>_"
	GreaterEquals = "_>=_"
	Less          = "_<_"
	LessEquals    = "_<=_"
	NotEquals     = "_!=_"
)

All CEL operators are modelled as function calls. The list of constants below uses mangled operator names to avoid collisions with user-defined functions.

Functions

func Find

func Find(text string) (string, bool)

Find the operator name from the function name and whether it could be found.

func IsRestriction

func IsRestriction(op string) bool

Determine whether the operator is a restriction.