temql

Documentation

Index

• Constants
• Variables
• func ParseExpr(input string) interface{}
• func ParseLabels(input string) (labels.Labels, error)
• func ParseMetric(input string) (m labels.Labels, err error)
• type Expr
• type Item
  • func (i *Item) PositionRange() PositionRange
• type ItemType
• type Node
• type ParseErr
• type ParseErrors
• type Pos
• type PositionRange
• type TermBinaryExpr
  • func (t *TermBinaryExpr) Print()
  • func (t *TermBinaryExpr) String() string
• type TermExpr
  • func (t *TermExpr) String() string
• type VectorSelector
  • func (*VectorSelector) String() string

Constants

const COMMA = 57358

const EOF = 57360

const EQL = 57354

const ERROR = 57359

const IDENTIFIER = 57355

const LAND = 57352

const LEFT_BRACE = 57350

const LEFT_PAREN = 57348

const LOR = 57353

const METRIC_IDENTIFIER = 57357

const RIGHT_BRACE = 57351

const RIGHT_PAREN = 57349

const START_EXPRESSION = 57347

const START_METRIC = 57346

const STRING = 57356

Variables

var ItemTypeStr = map[ItemType]string{
	LEFT_PAREN:  "(",
	RIGHT_PAREN: ")",
	LEFT_BRACE:  "{",
	RIGHT_BRACE: "}",
	EQL:         "=",
	COMMA:       ",",
}

符号定义

Functions

func ParseExpr

func ParseExpr(input string) interface{}

func ParseLabels

func ParseLabels(input string) (labels.Labels, error)

func ParseMetric

func ParseMetric(input string) (m labels.Labels, err error)

Types

type Expr

type Expr interface {
	Node
}

type Item

type Item struct {
	Typ ItemType // The type of this Item.
	Pos Pos      // The starting position, in bytes, of this Item in the input string.
	Val string   // The value of this Item.
}

Item represents a token or text string returned from the scanner.

func (*Item) PositionRange

func (i *Item) PositionRange() PositionRange

Item implements the Node interface. This makes it possible to call mergeRanges on them.

type ItemType

type ItemType int

type Node

type Node interface {
	// String representation of the node that returns the given node when parsed
	// as part of a valid query.
	String() string
}

type ParseErr

type ParseErr struct {
	PositionRange PositionRange
	Err           error
	Query         string

	// LineOffset is an additional line offset to be added. Only used inside unit tests.
	LineOffset int
}

ParseErr wraps a parsing error with line and position context.

type ParseErrors

type ParseErrors []ParseErr

type Pos

type Pos int

type PositionRange

type PositionRange struct {
	Start Pos
	End   Pos
}

PositionRange describes a position in the input string of the parser.

type TermBinaryExpr

type TermBinaryExpr struct {
	Op       ItemType // The operation of the expression.
	LHS, RHS Expr     // The operands on the respective sides of the operator.
}

func (*TermBinaryExpr) Print

func (t *TermBinaryExpr) Print()

func (*TermBinaryExpr) String

func (t *TermBinaryExpr) String() string

type TermExpr

type TermExpr struct {
	Name string
}

func (*TermExpr) String

func (t *TermExpr) String() string

type VectorSelector

type VectorSelector struct {
	Name string

	Expr Expr

	LabelMatchers []*prompb.LabelMatcher
}

func (*VectorSelector) String

func (*VectorSelector) String() string