Macro to generate static fields with CbType's from enum

CbTypeAlias.hx

package;
enum CbTypeAlias 
{
	PLAYER; ENEMY; ITEM;
}

DefaultCbType.hx

package;
@:build(DefaultCbTypeBuilder.build())
class DefaultCbType {}

DefaultCbTypeBuilder.hx

package;
import haxe.macro.Context;
import haxe.macro.Expr;
import haxe.macro.Expr.Access;
import haxe.macro.Expr.Field;
import haxe.macro.Expr.FieldType;
import haxe.macro.TypeTools;
import haxe.macro.ExprTools;
#if !macro
import nape.callbacks.CbType;
import DefaultCbType;
#end

using haxe.macro.ExprTools;

/**
 * Macro to generate static fields with CbType's from enum
 * @author T1mL3arn
 */
class DefaultCbTypeBuilder
{
	static public function build()
	{		
		var cbaliaslist = Type.getEnumConstructs(CbTypeAlias);
		var fields:Array<Field> = Context.getBuildFields();
		var fillExpr:Array<Expr> = [];
		
		//CbType fields
		for (alias in cbaliaslist)
		{
			alias = alias.toUpperCase();
			var cbTypePath:TypePath = {name:"CbType", pack:["nape", "callbacks"]};
			var exprDef:ExprDef = ENew(cbTypePath, []);
			var cbExpr:Expr = {expr:exprDef, pos:Context.currentPos()};
			fields.push({
				name:	alias,
				doc:	'CbType for "${alias.toLowerCase()}" alias. (autogenerated)',
				access:	[Access.APublic, Access.AStatic],
				kind:	FieldType.FVar(TPath(cbTypePath), cbExpr),
				pos:	Context.currentPos()
			});
			
			fillExpr.push(macro cache['${alias.toLowerCase()}'] = DefaultCbType.$alias);
		}
		
		//building static method
		var fillMethodBody:Expr = {expr:EBlock(fillExpr), pos:Context.currentPos()};
		var cacheArg:FunctionArg = {name:"cache", opt:false, type:macro:Map<String, nape.callbacks.CbType>};
		var voidType:ComplexType = TPath({name:"Void", pack:[]});
		var fillGivenCacheFunction:Function = {args:[cacheArg], ret:voidType, expr:fillMethodBody};
		fields.push({
			name:	"fillGivenCache",
			doc:	"Fill's the given cache by all defined CbType objects",
			access:	[Access.APublic, Access.AStatic],
			kind:	FieldType.FFun(fillGivenCacheFunction),
			pos:	Context.currentPos()
		});
		
		return fields;
	}
}

Main.hx

// somewhere in Main.hx

function init()
{
	trace("types from fields:", DefaultCbType.ENEMY, DefaultCbType.PLAYER, DefaultCbType.ITEM);
	// prints: types from fields:,CbType#5,CbType#4,CbType#6
	
	trace("types from cache:");
	var cache = new Map<String, CbType>();
	DefaultCbType.fillGivenCache(cache);
	for (key in cache.keys())
		trace(key, cache[key]);
		
	//prints
	// Main.hx:25: types from cache
    // Main.hx:29: enemy,CbType#5
    // Main.hx:29: player,CbType#4
    // Main.hx:29: item,CbType#6
}

It works for pure haxe flash target. But not for OpenFl flash target (and even html5).
It prints

nape/2,0,20/zpp_nape/util/Debug.hx:432: characters 21-40 : You cannot access the flash package while in a macro (for flash.display.Shape)

Fixed by wrapping #if !macro for nape imports in DefaultCbTypeBuilder