source

Jun 4, 2026

Changes in this version

+ func FindMatcherPos(expr string, within posrange.PositionRange, m *labels.Matcher) posrange.PositionRange

type Join

+ DeadInfo *DeadInfo

+ DeadLabels []DeadLabel

type Source

+ Indirect []*Source

type Unless

+ DeadInfo *DeadInfo

+ func (u Unless) MarshalYAML() (any, error)

Apr 20, 2026

Changes in this version

+ const FeatureBinopFillModifiers

+ const FeatureDurationExpr

+ const FeatureExperimentalFunctions

+ const FeatureExtendedRangeSelectors

+ func ResetFeatures()

+ func SetFeatures(f *Features)

+ type FeatureRequirement struct

+ Feature string

+ Fragments []posrange.PositionRange

+ Name string

+ type FeatureVersion struct

+ Flag string

+ MinVersion PrometheusVersion

+ StableVersion PrometheusVersion

+ func LookupFeatureVersion(name string) (FeatureVersion, bool)

+ type Features struct

+ func NewFeatures() *Features

+ func (f *Features) Lookup(name string) (FeatureVersion, bool)

+ func (f *Features) Register(name string, fv FeatureVersion)

+ type Fill struct

+ LHS float64

+ RHS float64

type Join

+ Fill *Fill

+ func (j Join) MarshalYAML() (any, error)

+ type PrometheusVersion struct

+ Major int

+ Minor int

+ Patch int

+ func ParseVersion(s string) (PrometheusVersion, error)

+ func (v PrometheusVersion) IsLessThan(other PrometheusVersion) bool

+ func (v PrometheusVersion) IsZero() bool

+ func (v PrometheusVersion) String() string

+ type RangeSelectorMode uint8

+ const RangeSelectorAnchored

+ const RangeSelectorDefault

+ const RangeSelectorSmoothed

+ func (rsm RangeSelectorMode) MarshalYAML() (any, error)

type Source

+ NeedsFeatures []FeatureRequirement

+ RangeSelectorMode RangeSelectorMode

Dec 1, 2025

Changes in this version

+ func FindArgumentPosition(expr string, within posrange.PositionRange, name string) posrange.PositionRange

+ func FindFuncNamePosition(expr string, within posrange.PositionRange, fn string) posrange.PositionRange

+ func FindFuncPosition(expr string, within posrange.PositionRange, fn string, ...) posrange.PositionRange

+ func GetQueryFragment(expr string, pos posrange.PositionRange) string

+ func MostOuterOperation[T promParser.Node](s Source) (T, bool)

+ type DeadInfo struct

+ Fragment posrange.PositionRange

+ Reason string

+ type DeadLabel struct

+ Kind DeadLabelKind

+ LabelFragment posrange.PositionRange

+ LabelReason string

+ Name string

+ Reason string

+ UsageFragment posrange.PositionRange

+ type DeadLabelKind uint8

+ const DuplicatedJoin

+ const ImpossibleDeadLabel

+ const OrphanedLabel

+ const UnusedLabel

+ func (dlk DeadLabelKind) String() string

+ type Join struct

+ AddedLabels []string

+ Depth int

+ IsOn bool

+ MatchingLabels []string

+ Op promParser.ItemType

+ Src Source

+ type LabelPromiseType uint8

+ const GuaranteedLabel

+ const ImpossibleLabel

+ const PossibleLabel

+ func (lpt LabelPromiseType) MarshalYAML() (any, error)

+ type LabelTransform struct

+ Fragment posrange.PositionRange

+ Kind LabelPromiseType

+ Reason string

+ type Operation struct

+ Arguments []string

+ Node promParser.Node

+ Operation string

+ func (so Operation) MarshalYAML() (any, error)

+ type Operations []Operation

+ type ReturnInfo struct

+ AlwaysReturns bool

+ IsReturnBool bool

+ KnownReturn bool

+ LogicalExpr string

+ ReturnedNumber float64

+ ValuePosition posrange.PositionRange

+ type Source struct

+ DeadInfo *DeadInfo

+ DeadLabels []DeadLabel

+ FixedLabels bool

+ IsConditional bool

+ Joins []Join

+ Labels map[string]LabelTransform

+ Operations Operations

+ Position posrange.PositionRange

+ ReturnInfo ReturnInfo

+ Returns promParser.ValueType

+ Type Type

+ Unless []Unless

+ UsedLabels []string

+ func LabelsSource(expr string, node promParser.Node) (src []Source)

+ func (s Source) CanHaveLabel(name string) bool

+ func (s Source) LabelExcludeReason(name string) (string, posrange.PositionRange)

+ func (s Source) Operation() string

+ func (s Source) TransformedLabels(kinds ...LabelPromiseType) []string

+ func (s Source) WalkSources(fn Visitor)

+ type Type uint8

+ const AggregateSource

+ const FuncSource

+ const NumberSource

+ const SelectorSource

+ const StringSource

+ const UnknownSource

+ func (st Type) MarshalYAML() (any, error)

+ type Unless struct

+ IsOn bool

+ MatchingLabels []string

+ Src Source

+ type Visitor func(s Source, j *Join, u *Unless)