flower

type Edge struct {
	Caller *Node
	Callee *Node
}

type Flow struct {
	FlowFile
	Name     string
	Doc      string
	Code     string
	Line     int
	YamlNode *yaml.Node
}

type FlowFile struct {
	Path string
}

type FlowTemplateBinding struct {
	Flows []*Flow
	Nodes map[string]*Node
}

type Graph struct {
	Root  *Node           // the distinguished root node
	Nodes map[*Flow]*Node // all nodes by function
}

type Node struct {
	Flow *Flow
	ID   int
	In   []*Edge
	Out  []*Edge
}