parse

type Env []string

type Node interface {
	Type() NodeType
	String() (string, error)
}

type NodeType int

type Parser struct {
	Name     string // name of the processing template
	Env      Env
	Restrict *Restrictions
	// contains filtered or unexported fields
}

type Pos int

type Restrictions struct {
	NoUnset bool
	NoEmpty bool
}

type SubstitutionNode struct {
	NodeType
	ExpType  itemType
	Variable *VariableNode
	Default  Node // Default could be variable or text
}

type TextNode struct {
	NodeType
	Text string
}

type VariableNode struct {
	NodeType
	Ident    string
	Env      Env
	Restrict *Restrictions
}