fixes

CompilationOption.hx

@@ -0,0 +1,73 @@
+package;
+#if macro
+import haxe.macro.Context;
+import haxe.macro.Expr;
+#end
+ 
+/**
+* CompilationOption allows us to use compile-time variables for advanced conditional compilation.
+*/
+class CompilationOption {
+	#if macro
+	/**
+	* Internal storage of the options.
+	*/
+	static var storage = new Map<String,Dynamic>();
+	#end
+ 
+	/**
+	* Set `key` to `value`.
+	* 
+	* For simplicity `value` can only be constant Bool/Int/Float/String or null.
+	* Array and structures are also possible, check:
+	* http://haxe.org/manual/macros#constant-arguments
+	* 
+	* Set `force` to true in order to override an option. 
+	* But be careful overriding will influenced by compilation order which may be hard to predict.
+	*/
+	@:overload(function (key:String, value:Bool, ?force:Bool = false):Void{})
+	@:overload(function (key:String, value:Int, ?force:Bool = false):Void{})
+	@:overload(function (key:String, value:Float, ?force:Bool = false):Void{})
+	@:overload(function (key:String, value:String, ?force:Bool = false):Void{})
+	macro static public function set(key:String, value:Dynamic, ?force:Bool = false) {
+		if (!force && storage.exists(key))
+			throw key + " has already been set to " + storage.get(key);
+ 
+		storage.set(key, value);
+ 
+		return macro {}; //an empty block, which means nothing
+	}
+ 
+	/**
+	* Return the option as a constant.
+	*/
+	macro static public function get(key:String):Expr {
+		return Context.makeExpr(storage.get(key), Context.currentPos());
+	}
+ 
+	/**
+	* Tell if `key` was set.
+	*/
+	macro static public function exists(key:String):ExprOf<Bool> {
+		return Context.makeExpr(storage.exists(key), Context.currentPos());
+	}
+ 
+	/**
+	* Removes an option. Returns true if there was such option.
+	*/
+	macro static public function remove(key:String):ExprOf<Bool> {
+		return Context.makeExpr(storage.remove(key), Context.currentPos());
+	}
+ 
+	/**
+	* Dump the options as an object with keys as fields.
+	* eg. trace(CompilationOption.dump());
+	*/
+	macro static public function dump():ExprOf<Dynamic> {
+		var obj = {};
+		for (key in storage.keys()) {
+			Reflect.setField(obj, key, storage.get(key));
+		}
+		return Context.makeExpr(obj, Context.currentPos());
+	}
+}