strategies

type BlockContext struct {
	Input   *ast.FieldList
	Output  *ast.FieldList
	Vars    map[string]*ast.Ident
	Builder VarBuilder
}

type Chain interface {
	BuildFlow([]types.Component, types.Component, *goTypes.Info) (ast.Expr, []string, error)
	Register(string, Generator) error
}

type ComponentCall interface {
	Fn() ast.Expr
	Input() *ast.FieldList
	Output() *ast.FieldList
	Name() *ast.Ident
}

type ComponentStmt interface {
	Stmt() ast.Stmt
	InputFields() []*ast.Field
	OutputFields() []*ast.Field
	ErrStmt() *ast.BlockStmt
	Name() string
}

type FlowGen interface {
	AddImport(string)
	BuildComponentStmt(ctx *BlockContext, cCall, failureCall ComponentCall) ComponentStmt
	ApplyPlugins(ctx *BlockContext, componentStmt ComponentStmt) *ast.BlockStmt
	ServiceName() string
	VarBuilder() VarBuilder
	GenComponentCall(types.Component) (ComponentCall, error)
	TypesInfo() *goTypes.Info
}

type Generator func(FlowGen, types.Component) (ComponentCall, error)

type Option func(c *chain)

type VarBuilder func(t ast.Expr) *ast.Ident