const std = @import("std");
const tokens = @import("tokens.zig");
const Token = tokens.Token;

pub const NodeList = std.ArrayList(*Node);
pub const ParamList = std.ArrayList(*ParamDecl);

pub const NodeType = enum {
    Root,
    FnDecl,
};

pub const ParamDecl = struct {
    param_name: Token,

    // TODO types
    param_type: Token,
};

pub const FnDecl = struct {
    func_name: Token,
    params: ParamList,
    body: NodeList,
};

pub const Node = union(NodeType) {
    Root: NodeList,
    FnDecl: FnDecl,
};

pub fn mkRoot(allocator: *std.mem.Allocator) !*Node {
    var node = try allocator.create(Node);
    node.* = Node{ .Root = NodeList.init(allocator) };
    return node;
}