eval

package

v1.2.6 Latest Latest Go to latest Published: Aug 6, 2025 License: Apache-2.0 Imports: 8 Imported by: 0

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Valid go.mod file
Redistributable license
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Stable version
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Repository

github.com/cedar-policy/cedar-go

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Documentation ¶

Index ¶

Variables
func Ignore() types.Value
func IsIgnore(v types.Value) bool
func IsVariable(v types.Value) bool
func PartialError(err error) ast.IsNode
func PartialPolicy(env Env, p *ast.Policy) (policy *ast.Policy, keep bool)
func PolicyToNode(p *ast.Policy) ast.Node
func ToPartialError(n ast.IsNode) (error, bool)
func ToVariable(ent types.EntityUID) (types.String, bool)
func TypeName(v types.Value) string
func ValueToBool(v types.Value) (types.Boolean, error)
func ValueToDatetime(v types.Value) (types.Datetime, error)
func ValueToDecimal(v types.Value) (types.Decimal, error)
func ValueToDuration(v types.Value) (types.Duration, error)
func ValueToEntity(v types.Value) (types.EntityUID, error)
func ValueToIP(v types.Value) (types.IPAddr, error)
func ValueToLong(v types.Value) (types.Long, error)
func ValueToRecord(v types.Value) (types.Record, error)
func ValueToSet(v types.Value) (types.Set, error)
func ValueToString(v types.Value) (types.String, error)
func Variable(v types.String) types.Value
type BoolEvaler
- func Compile(p *ast.Policy) BoolEvaler
- func (e *BoolEvaler) Eval(env Env) (types.Boolean, error)
type ComparableValue
type Env
type Evaler
- func ToEval(n ast.IsNode) Evaler

Constants ¶

This section is empty.

Variables ¶

View Source

var ErrType = fmt.Errorf("type error")

Functions ¶

func Ignore ¶ added in v0.3.1

func Ignore() types.Value

func IsIgnore ¶ added in v0.3.1

func IsIgnore(v types.Value) bool

func IsVariable ¶ added in v0.3.1

func IsVariable(v types.Value) bool

func PartialError ¶ added in v1.2.6

func PartialError(err error) ast.IsNode

PartialError returns a node that represents a partial error.

func PartialPolicy ¶ added in v0.3.1

func PartialPolicy(env Env, p *ast.Policy) (policy *ast.Policy, keep bool)

PartialPolicy returns a partially evaluated version of the policy and a boolean indicating if the policy should be kept. (Policies that are determined to evaluate to false are not kept.)

func PolicyToNode ¶ added in v1.2.6

func PolicyToNode(p *ast.Policy) ast.Node

func ToPartialError ¶ added in v1.2.6

func ToPartialError(n ast.IsNode) (error, bool)

ToPartialError returns the error if the node is a partial error.

func ToVariable ¶ added in v0.3.1

func ToVariable(ent types.EntityUID) (types.String, bool)

func TypeName ¶

func TypeName(v types.Value) string

func ValueToBool ¶

func ValueToBool(v types.Value) (types.Boolean, error)

func ValueToDatetime ¶ added in v0.3.2

func ValueToDatetime(v types.Value) (types.Datetime, error)

func ValueToDecimal ¶

func ValueToDecimal(v types.Value) (types.Decimal, error)

func ValueToDuration ¶ added in v0.3.2

func ValueToDuration(v types.Value) (types.Duration, error)

func ValueToEntity ¶

func ValueToEntity(v types.Value) (types.EntityUID, error)

func ValueToIP ¶

func ValueToIP(v types.Value) (types.IPAddr, error)

func ValueToLong ¶

func ValueToLong(v types.Value) (types.Long, error)

func ValueToRecord ¶

func ValueToRecord(v types.Value) (types.Record, error)

func ValueToSet ¶

func ValueToSet(v types.Value) (types.Set, error)

func ValueToString ¶

func ValueToString(v types.Value) (types.String, error)

func Variable ¶ added in v0.3.1

func Variable(v types.String) types.Value

Types ¶

type BoolEvaler ¶ added in v0.3.1

type BoolEvaler struct {
	// contains filtered or unexported fields
}

func Compile ¶

func Compile(p *ast.Policy) BoolEvaler

func (*BoolEvaler) Eval ¶ added in v0.3.1

func (e *BoolEvaler) Eval(env Env) (types.Boolean, error)

type ComparableValue ¶ added in v0.3.2

type ComparableValue interface {
	types.Value

	// LessThan returns true if the lhs is less than the rhs, and an
	// error if the rhs is not comparable to the lhs
	LessThan(types.Value) (bool, error)

	// LessThan returns true if the lhs is less than or equal to the
	// rhs, and an error if the rhs is not comparable to the lhs
	LessThanOrEqual(types.Value) (bool, error)
}

ComparableValue provides the interface that must be implemented to support operator overloading of <, <=, >, and >=

type Env ¶ added in v0.3.1

type Env struct {
	Entities                    types.EntityGetter
	Principal, Action, Resource types.Value
	Context                     types.Value
}

type Evaler ¶

type Evaler interface {
	Eval(Env) (types.Value, error)
}

func ToEval ¶ added in v1.2.4

func ToEval(n ast.IsNode) Evaler

Source Files ¶

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