randexp

Documentation

Index

• type RandexpGenerator
  • func NewRandexpGenerator(pattern string) (*RandexpGenerator, error)
  • func (g *RandexpGenerator) Generate(rng *rand.Rand) string

Types

type RandexpGenerator

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

RandexpGenerator generates random strings that match a compiled regex pattern. It uses regexp/syntax to parse the pattern, then walks the resulting AST. Safe for concurrent use: the generator is immutable after construction; callers supply their own *rand.Rand on each Generate call.

func NewRandexpGenerator

func NewRandexpGenerator(pattern string) (*RandexpGenerator, error)

NewRandexpGenerator parses pattern and returns a generator ready to call Generate.

func (*RandexpGenerator) Generate

func (g *RandexpGenerator) Generate(rng *rand.Rand) string

Generate returns a new random string matching the pattern. rng must not be shared across goroutines; each goroutine should pass its own.