operators

package
v0.22.1 Latest Latest
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Published: Nov 22, 2024 License: Apache-2.0, BSD-3-Clause Imports: 0 Imported by: 70

Documentation

Overview

Package operators defines the internal function names of operators.

All operators in the expression language are modelled as function calls.

Index

Constants

View Source
const (
	// Symbolic operators.
	Conditional   = "_?_:_"
	LogicalAnd    = "_&&_"
	LogicalOr     = "_||_"
	LogicalNot    = "!_"
	Equals        = "_==_"
	NotEquals     = "_!=_"
	Less          = "_<_"
	LessEquals    = "_<=_"
	Greater       = "_>_"
	GreaterEquals = "_>=_"
	Add           = "_+_"
	Subtract      = "_-_"
	Multiply      = "_*_"
	Divide        = "_/_"
	Modulo        = "_%_"
	Negate        = "-_"
	Index         = "_[_]"
	OptIndex      = "_[?_]"
	OptSelect     = "_?._"

	// Macros, must have a valid identifier.
	Has       = "has"
	All       = "all"
	Exists    = "exists"
	ExistsOne = "exists_one"
	Map       = "map"
	Filter    = "filter"

	// Named operators, must not have be valid identifiers.
	NotStrictlyFalse = "@not_strictly_false"
	In               = "@in"

	// Deprecated: named operators with valid identifiers.
	OldNotStrictlyFalse = "__not_strictly_false__"
	OldIn               = "_in_"
)

String "names" for CEL operators.

Variables

This section is empty.

Functions

func Arity added in v0.12.2

func Arity(symbol string) int

Arity returns the number of argument the operator takes -1 is returned if an undefined symbol is provided

func Find

func Find(text string) (string, bool)

Find the internal function name for an operator, if the input text is one.

func FindReverse added in v0.3.0

func FindReverse(symbol string) (string, bool)

FindReverse returns the unmangled, text representation of the operator.

func FindReverseBinaryOperator added in v0.3.1

func FindReverseBinaryOperator(symbol string) (string, bool)

FindReverseBinaryOperator returns the unmangled, text representation of a binary operator.

If the symbol does refer to an operator, but the operator does not have a display name the result is false.

func Precedence added in v0.3.0

func Precedence(symbol string) int

Precedence returns the operator precedence, where the higher the number indicates higher precedence operations.

Types

This section is empty.

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