transform

Documentation

Index

• func ApplyAll(filter ast.FilterNode, passes []CompilerPass) (ast.FilterNode, error)
• type CompilerPass
  • func PrometheusKeySanitizePass() CompilerPass
  • func UnallocatedReplacementPass() CompilerPass

Functions

func ApplyAll

func ApplyAll(filter ast.FilterNode, passes []CompilerPass) (ast.FilterNode, error)

ApplyAll applies all the compiler passes serially and returns the resulting tree. This method copies the passes AST before executing the compiler passes.

Types

type CompilerPass

type CompilerPass interface {
	// Exec executes the pass on the provided AST. This method may either return
	// a new AST or the existing modified AST. Note that the parameter to this
	// method may be changed directly.
	Exec(filter ast.FilterNode) (ast.FilterNode, error)
}

CompilerPass is an interface which defines an implementation capable of accepting an input AST and making optimizations or changes, and returning a new (or the existing) AST.

func PrometheusKeySanitizePass

func PrometheusKeySanitizePass() CompilerPass

PrometheusKeySanitizePass returns a

func UnallocatedReplacementPass

func UnallocatedReplacementPass() CompilerPass

UnallocatedReplacementPass returns a CompilerPass implementation which replaces all __unallocated__ with empty string