parse

type Expression struct {
	Type     int
	Name     string
	NameType string

	Children Expressions
}

type Expressions []*Expression

type Function struct {
	Level      int
	Name       string
	Params     Expressions
	Results    []string
	Statements []*Statement
}

type Statement struct {
	Level int
	Name  string
	Args  Expressions

	Init *Statement
	Cond *Expression
	Post *Statement
	Body []*Statement
}