module ast
import tokenizer { Token, VuaToken }

struct Nil {}

struct String {
	contents string
}

struct Number {
	contents string
}

struct Boolean {
  value bool
}

@[packed]
struct TableFlags {
	array  bool
	object bool
	enum   bool
	class  bool
	struct bool
}

struct Table {
	flag   TableFlags
	data []Variable
}

struct Class {
	properties []VariableDef
	methods    []Function
}

struct Function {
	name   string
	params []VariableDef
	body   []Token
}

struct FunctionRef {
	index u32
}

struct Lambda {
	params []VariableDef
	body   []Token
	scope  ?FunctionRef
}

struct VariableDef {
	name string
	type VuaTaggedType
}

struct Variable {
	// maybe this name should be a null terminated string
	name  string
	value Expr
}

struct Expr {
  index u32
	type  VuaTaggedType
}

enum VuaTaggedType as u8 {
	nil
	string
	number
	boolean
	table
	function
}


type TokenIndex = u32

@[heap]
struct Nodes {
}

@[heap]
struct Tokens {
}

struct AST {
	tokens Tokens
	nodes  Nodes
	pos    int
}

union NodeData {
}

struct Node {
	token_type VuaToken
	data 		   NodeData
}