export type Program = Array<Decl | Stmt>

// Declarations
export type Decl = VarDecl

export type VarDecl = ADecl<"var", {
    type: Type,
}>

type ADecl<Ty, Args> = {
    type: "decl",
    decl_type: Ty,
    attrs: Array<Attr>,
    name: string,
    args: Args,
}

// Statements
export type Stmt = AssignStmt

export type AssignStmt = AStmt<"assign", {
    name: string,
    expr: Expr,
}>

type AStmt<Ty, Args> = {
    type: "stmt",
    stmt_type: Ty,
    args: Args,
}

// Expressions
export type Expr = number

// Attributes
export type Attr = {
    name: string,
    args: Array<string | number>,
}

// Types
export type Type = PrimitiveType

export type PrimitiveType = "s8" | "u8" | "u16"