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Example of Optimized Javascript Object as a StringMap<Dynamic>
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| package project; | |
| abstract JSObjectStringMap({}) { | |
| public inline function new(?i:{}) { | |
| this = if (i == null) {} else i; | |
| } | |
| } |
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| package starlight.core; | |
| import haxe.macro.Expr; | |
| import haxe.macro.ExprTools; | |
| import starlight.core.JSObjectStringMap; | |
| class JSObjectStringMapTools { | |
| macro public static inline function set(obj:ExprOf<JSObjectStringMap>, field:ExprOf<String>, value:Expr) { | |
| return macro untyped __js__('${ExprTools.toString(obj)}[${ExprTools.toString(field)}] = ${ExprTools.toString(value)}'); | |
| } | |
| macro public static inline function get(obj:ExprOf<JSObjectStringMap>, field:ExprOf<String>) { | |
| return macro untyped __js__('${ExprTools.toString(obj)}[${ExprTools.toString(field)}]'); | |
| } | |
| macro public static inline function exists(obj:ExprOf<JSObjectStringMap>, field:ExprOf<String>) { | |
| return macro untyped __js__('${ExprTools.toString(field)} in ${ExprTools.toString(obj)}'); | |
| } | |
| macro public static inline function keys(obj:ExprOf<JSObjectStringMap>) { | |
| return macro (untyped __js__('Object.keys(${ExprTools.toString(obj)})'):Array<String>); | |
| } | |
| macro public static inline function arrayKeys(obj:ExprOf<JSObjectStringMap>) { | |
| return macro (untyped __js__('Object.keys(${ExprTools.toString(obj)})'):Array<String>); | |
| } | |
| macro public static inline function size(obj:ExprOf<JSObjectStringMap>) { | |
| return macro untyped __js__('Object.keys(${ExprTools.toString(obj)}).length'); | |
| } | |
| macro public static function values(obj:ExprOf<JSObjectStringMap>):ExprOf<Array<Dynamic>> { | |
| return macro [for (key in (untyped __js__('Object.keys(${ExprTools.toString(obj)})'):Array<String>)) (untyped __js__('${ExprTools.toString(obj)}[key]'))]; | |
| } | |
| } |
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| package project; | |
| import JSObjectStringMap; | |
| import JSObjectStringMapTools; | |
| class App extends Lens { | |
| static function main() { | |
| var a = new JSObjectStringMap(); // compiles to: var a = { }; | |
| JSObjectStringMapTools.set(a, 'a', 1); // compiles to: a['a'] = 1; | |
| JSObjectStringMapTools.keys(a); // compiles to: Object.keys(a); | |
| } | |
| } |
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I'm leaving this here for reference from the mailinglist. I recommend using DynamicAccess in the standard library instead.