Inspect traverses an AST in depth-first order: It starts by calling f(node, path); node must not be nil.

NewEngine returns a new engine.

NewTest returns an initialized empty Test.

ParseExpr returns the expression parsed from the input.

ParseMetric parses the input into a metric.

ParseMetricSelector parses the provided textual metric selector into a list of label matchers.

ParseStmts parses the input and returns the resulting statements or any occurring error.

Tree returns a string of the tree structure of the given node.

Walk traverses an AST in depth-first order: It starts by calling v.Visit(node, path); node must not be nil.

Non-operators.

The valid value types.

The valid value types.

The valid value types.

The valid value types.

The valid value types.

LookbackDelta determines the time since the last sample after which a time series is considered stale.

AggregateExpr represents an aggregation operation on a Vector.

AlertStmt represents an added alert rule.

BinaryExpr represents a binary expression between two child expressions.

Call represents a function call.

Engine handles the lifetime of queries from beginning to end.

EvalStmt holds an expression and information on the range it should be evaluated on.

Function represents a function of the expression language and is used by function nodes.

MatrixSelector represents a Matrix selection.

NumberLiteral represents a number.

ParenExpr wraps an expression so it cannot be disassembled as a consequence of operator precedence.

ParseErr wraps a parsing error with line and position context.

Point represents a single data point for a given timestamp.

RecordStmt represents an added recording rule.

Result holds the resulting value of an execution or an error if any occurred.

Sample is a single sample belonging to a metric.

Scalar is a data point that's explicitly not associated with a metric.

Series is a stream of data points belonging to a metric.

String represents a string value.

StringLiteral represents a string.

Test is a sequence of read and write commands that are run against a test storage.

UnaryExpr represents a unary operation on another expression.

VectorMatching describes how elements from two Vectors in a binary operation are supposed to be matched.

VectorSelector represents a Vector selection.

Expr is a generic interface for all expression types.

Node is a generic interface for all nodes in an AST.

A Query is derived from an a raw query string and can be run against an engine it is associated with.

Statement is a generic interface for all statements.

Value is a generic interface for values resulting from a query evaluation.

Visitor allows visiting a Node and its child nodes.

Expressions is a list of expression nodes that implements Node.

Matrix is a slice of Seriess that implements sort.Interface and has a String method.

Pos is the position in a string.

Statements is a list of statement nodes that implements Node.

ValueType describes a type of a value.

Vector is basically only an alias for model.Samples, but the contract is that in a Vector, all Samples have the same timestamp.

VectorMatchCardinality describes the cardinality relationship of two Vectors in a binary operation.