const std = @import("std");
const lang = @import("lang.zig");

pub const RunError = error{UnknownCommand};

pub const Runner = struct {
    allocator: *std.mem.Allocator,

    pub fn init(allocator: *std.mem.Allocator) Runner {
        return Runner{ .allocator = allocator };
    }

    fn runCommand(self: *Runner, cmd: *lang.Command) !void {
        return switch (cmd.command) {
            .Noop => {},
            else => blk: {
                std.debug.warn("Unknown command: {}\n", cmd.command);
                break :blk RunError.UnknownCommand;
            },
        };
    }

    pub fn runCommands(
        self: *Runner,
        cmds: lang.CommandList,
        debug_flag: bool,
    ) !void {
        var it = cmds.iterator();

        while (it.next()) |cmd| {
            if (debug_flag) cmd.print();
            try self.runCommand(cmd);
        }
    }
};