2.3.0

treat function literals as synchronized by default

.travis.yml

@@ -8,8 +8,7 @@ sudo: false
 dist: trusty
 
 haxe:
-  - "3.2.1"
-  - "3.4.2"
+  - "3.4.7"
   - development
 
 addons:
@@ -36,21 +35,22 @@ install:
     elif [ "${TRAVIS_OS_NAME}" = "osx" ]; then
       brew update;
       brew install mono;
-      brew install python3;
-      brew tap homebrew/homebrew-php;
-      brew install php71;
+      brew upgrade python;
+      brew install php;
     fi
   # Download and setup a standalone flash player debugger
   - haxe flash/install.hxml
   # Install haxelibs
   - if [ "${TRAVIS_HAXE_VERSION}" = "development" ]; then
       haxelib git hxcpp https://github.com/HaxeFoundation/hxcpp.git;
+    else
+      haxelib install hxcpp;
+    fi
+  - if [ "${TRAVIS_HAXE_VERSION}" = "development" ] || [ "${TRAVIS_HAXE_VERSION}" = "3.2.1" ]; then
       pushd $(haxelib path hxcpp | head -1);
         pushd tools/hxcpp; haxe compile.hxml; popd;
         pushd project; neko build.n; popd;
       popd;
-    else
-      haxelib install hxcpp;
     fi
   - haxelib install hxjava
   - haxelib install hxcs
@@ -63,6 +63,7 @@ script:
     haxe build.hxml &&
     popd
   - haxe bin/build-interp.hxml
+  - haxe bin/build-interp.hxml -D hscriptPos
   - haxe bin/build-neko.hxml         && neko bin/Test.n
   - haxe bin/build-js.hxml           && node bin/Test.js
   - haxe bin/build-java.hxml         && java -jar bin/Test.jar

.vscode/launch.json

@@ -0,0 +1,16 @@
+{
+	// Utilisez IntelliSense pour en savoir plus sur les attributs possibles.
+	// Pointez pour afficher la description des attributs existants.
+	// Pour plus d'informations, visitez : https://go.microsoft.com/fwlink/?linkid=830387
+	"version": "0.2.0",
+	"configurations": [
+		{
+			"name": "HashLink (launch)",
+			"request": "launch",
+			"type": "hl",
+			"hxml": "hscript.hxml",
+			"cwd": "${workspaceRoot}",
+			"preLaunchTask": "Build"
+		}
+	]
+}

.vscode/tasks.json

@@ -0,0 +1,16 @@
+{
+	// See https://go.microsoft.com/fwlink/?LinkId=733558
+	// for the documentation about the tasks.json format
+	"version": "2.0.0",
+	"tasks": [
+		{
+			"label": "Build",
+			"type": "hxml",
+			"file": "hscript.hxml",
+			"group": {
+				"kind": "build",
+				"isDefault": true
+			}
+		}
+	]
+}

Test.hx

@@ -7,7 +7,7 @@ import hscript.Printer;
 import haxe.unit.*;
 
 class Test extends TestCase {
-	function assertScript(x,v:Dynamic,?vars : Dynamic,allowTypes=false) {
+	function assertScript(x,v:Dynamic,?vars : Dynamic, allowTypes=false, ?pos:haxe.PosInfos) {
 		var p = new hscript.Parser();
 		p.allowTypes = allowTypes;
 		var program = p.parseString(x);
@@ -18,7 +18,7 @@ class Test extends TestCase {
 			for( v in Reflect.fields(vars) )
 				interp.variables.set(v,Reflect.field(vars,v));
 		var ret : Dynamic = interp.execute(program);
-		assertEquals(v, ret);
+		assertEquals(v, ret, pos);
 	}
 
 	function test():Void {
@@ -99,6 +99,16 @@ class Test extends TestCase {
 		assertScript("var a:Array<Dynamic>=[1,2,4]; a[2]", 4, null, true);
 		assertScript("/**/0", 0);
 		assertScript("x=1;x*=-2", -2);
+		assertScript("var f = x -> x + 1; f(3)", 4);
+		assertScript("var f = (x) -> x + 1; f(3)", 4);
+		assertScript("var f = (x:Int) -> x + 1; f(3)", 4);
+		assertScript("var f = (x,y) -> x + y; f(3,1)", 4);
+		assertScript("var f = (x,y:Int) -> x + y; f(3,1)", 4);
+		assertScript("var f = (x:Int,y:Int) -> x + y; f(3,1)", 4);
+		assertScript("var f:Int->Int->Int = (x:Int,y:Int) -> x + y; f(3,1)", 4, null, true);
+		assertScript("var f:(x:Int, y:Int)->Int = (x:Int,y:Int) -> x + y; f(3,1)", 4, null, true);
+		assertScript("var f:(x:Int)->(y:Int, z:Int)->Int = (x:Int) -> (y:Int, z:Int) -> x + y + z; f(3)(1, 2)", 6, null, true);
+		assertScript("var f:(x:Int)->(Int, Int)->Int = (x:Int) -> (y:Int, z:Int) -> x + y + z; f(3)(1, 2)", 6, null, true);
 	}
 
 	function testMap():Void {
@@ -152,9 +162,16 @@ class Test extends TestCase {
 	}
 
 	static function main() {
+		#if ((haxe_ver < 4) && php)
+		// uncaught exception: The each() function is deprecated. This message will be suppressed on further calls (errno: 8192)
+		// in file: /Users/travis/build/andyli/hscript/bin/lib/Type.class.php line 178
+		untyped __php__("error_reporting(E_ALL ^ E_DEPRECATED);");
+		#end
+
 		var runner = new TestRunner();
 		runner.add(new Test());
 		var succeed = runner.run();
+
 		#if sys
 			Sys.exit(succeed ? 0 : 1);
 		#elseif flash

appveyor.yml

@@ -5,8 +5,10 @@ environment:
     HAXELIB_ROOT: C:\projects\haxelib
 
 install:
+  # http://help.appveyor.com/discussions/problems/5616-not-able-to-build-due-to-problem-in-chocolateyinstallps1
+  - ps: Set-Service wuauserv -StartupType Manual
   # Install the haxe chocolatey package (https://chocolatey.org/packages/haxe)
-  - cinst haxe -version 3.4.2 -y
+  - cinst haxe -version 3.4.7 -y
   - RefreshEnv
   # Setup haxelib
   - mkdir "%HAXELIB_ROOT%"

flash/.gitignore

@@ -1,3 +1,5 @@
 *.exe
 *.app
-flashplayerdebugger
+flashplayerdebugger
+LGPL/
+license.pdf

flash/Install.hx

@@ -1,4 +1,5 @@
 import Sys.*;
+import sys.FileSystem.*;
 import sys.io.File.*;
 import haxe.*;
 import haxe.io.*;
@@ -7,11 +8,11 @@ class Install {
 	// https://www.adobe.com/support/flashplayer/downloads.html
 	static var fpDownload(default, never) = switch (systemName()) {
 		case "Linux":
-			"http://fpdownload.macromedia.com/pub/flashplayer/updaters/25/flash_player_sa_linux_debug.x86_64.tar.gz";
+			"http://fpdownload.macromedia.com/pub/flashplayer/updaters/26/flash_player_sa_linux_debug.x86_64.tar.gz";
 		case "Mac":
-			"http://fpdownload.macromedia.com/pub/flashplayer/updaters/25/flashplayer_25_sa_debug.dmg";
+			"http://fpdownload.macromedia.com/pub/flashplayer/updaters/26/flashplayer_26_sa_debug.dmg";
 		case "Windows":
-			"http://fpdownload.macromedia.com/pub/flashplayer/updaters/25/flashplayer_25_sa_debug.exe";
+			"http://fpdownload.macromedia.com/pub/flashplayer/updaters/26/flashplayer_26_sa_debug.exe";
 		case _:
 			throw "unsupported system";
 	}
@@ -33,7 +34,7 @@ class Install {
 		case "Mac":
 			"/Library/Application Support/Macromedia/FlashPlayerTrust";
 		case "Windows":
-			Path.join([getEnv("SYSTEMROOT"), "system32", "Macromed", "Flash", "FlashPlayerTrust"]);
+			Path.join([getEnv("APPDATA"), "Macromedia", "Flash Player", "#Security", "FlashPlayerTrust"]);
 		case _:
 			throw "unsupported system";
 	}
@@ -45,12 +46,8 @@ class Install {
 					throw "failed to download flash player";
 				if (command("tar", ["-xf", Path.withoutDirectory(fpDownload), "-C", "flash"]) != 0)
 					throw "failed to extract flash player";
+				deleteFile(Path.withoutDirectory(fpDownload));
 			case "Mac":
-				// https://github.com/caskroom/homebrew-cask/pull/15381
-				if (command("brew", ["uninstall", "--force", "brew-cask"]) != 0)
-					throw "failed to brew uninstall --force brew-cask";
-				if (command("brew", ["tap", "caskroom/versions"]) != 0)
-					throw "failed to brew tap caskroom/versions";
 				if (command("brew", ["cask", "install", "flash-player-debugger"]) != 0)
 					throw "failed to install flash-player-debugger";
 			case "Windows":

haxelib.json

@@ -3,7 +3,7 @@
   "url": "https://github.com/HaxeFoundation/hscript",
   "license": "MIT",
   "description": "Haxe Script is a scripting engine for a subset of the Haxe language",
-  "version": "2.2.0",
+  "version": "2.3.0",
   "releasenote": "",
   "contributors": ["ncannasse"]
 }

hscript.hxml

@@ -1 +1,2 @@
-bin/build-flash.hxml
+bin/build-each.hxml
+-hl bin/Test.hl

hscript/Async.hx

@@ -79,8 +79,10 @@ class Async {
 
 	function buildSync( e : Expr, exit : Expr ) : Expr {
 		switch( expr(e) ) {
-		case EFunction(_):
-			return toCps(e, null, null);
+		case EFunction(_,_,name,_):
+			if( name != null )
+				return toCps(e, null, null);
+			return e;
 		case EBlock(el):
 			var v = saveVars();
 			for( e in el )
@@ -96,7 +98,7 @@ class Async {
 		case EBreak if( currentBreak != null ):
 			return currentBreak(e);
 		case EContinue if( currentLoop != null ):
-			return block([call(currentLoop, [nullId], e), mk(EReturn(),e)],e);
+			return block([retNull(currentLoop, e), mk(EReturn(),e)],e);
 		case EFor(_), EWhile(_):
 			var oldLoop = currentLoop, oldBreak = currentBreak;
 			currentLoop = null;
@@ -106,7 +108,7 @@ class Async {
 			currentBreak = oldBreak;
 			return e;
 		case EReturn(eret) if( exit != null ):
-			return block([call(exit,[eret == null ? nullId : eret], e), mk(EReturn(),e)], e);
+			return block([eret == null ? retNull(exit, e) : call(exit,[eret], e), mk(EReturn(),e)], e);
 		default:
 			return Tools.map(e, buildSync.bind(_, exit));
 		}
@@ -133,7 +135,9 @@ class Async {
 		return mk(EFunction([for( a in arg ) { name : a, t : null }], e, name), e);
 	}
 
-	inline function block(arr, e) {
+	inline function block(arr:Array<Expr>, e) {
+		if( arr.length == 1 && expr(arr[0]).match(EBlock(_)) )
+			return arr[0];
 		return mk(EBlock(arr), e);
 	}
 
@@ -149,8 +153,12 @@ class Async {
 		return mk(ECall(e, args), inf);
 	}
 
-	function retNull(e) : Expr {
-		return call(e, [nullId],e);
+	function retNull(e:Expr,?pos) : Expr {
+		switch( expr(e) ) {
+		case EFunction([{name:"_"}], e, _, _): return e;
+		default:
+		}
+		return call(e, [nullId], pos == null ? e : pos);
 	}
 
 	function makeCall( ecall, args : Array<Expr>, rest : Expr, exit, sync = false ) {
@@ -179,7 +187,9 @@ class Async {
 		if( !syncFlag )
 			return;
 		switch( expr(e) ) {
-		case ECall(_), EFunction(_):
+		case ECall(_):
+			syncFlag = false;
+		case EFunction(_,_,name,_) if( name != null ):
 			syncFlag = false;
 		case EMeta("sync" | "async", _, _):
 			// isolated from the sync part
@@ -206,7 +216,7 @@ class Async {
 			// local recursion
 			for( e in el )
 				switch( expr(e) ) {
-				case EFunction(_, _, name, null): varNames.push(name);
+				case EFunction(_, _, name, null): if( name != null ) varNames.push(name);
 				default:
 				}
 			while( el.length > 0 ) {
@@ -250,7 +260,7 @@ class Async {
 			var oldLoop = currentLoop, oldBreak = currentBreak;
 			var loop = ident("_loop" + id,e);
 			currentLoop = loop;
-			currentBreak = function(inf) return block([call(rest, [nullId], inf), mk(EReturn(),inf)], inf);
+			currentBreak = function(inf) return block([retNull(rest, inf), mk(EReturn(),inf)], inf);
 			var efor = block([
 				mk(EVar("_i" + id, call(ident("makeIterator",eit),[eit],eit)),eit),
 				fun("_", block([
@@ -258,7 +268,7 @@ class Async {
 					mk(EVar(v, call(field(it, "next",it), [], it)), it),
 					toCps(eloop, loop, exit),
 				], it),"_loop" + id),
-				call(loop, [nullId], e),
+				retNull(loop, e),
 			], e);
 			currentLoop = oldLoop;
 			currentBreak = oldBreak;
@@ -306,18 +316,18 @@ class Async {
 			var loop = ident("_loop" + id, cond);
 			var oldLoop = currentLoop, oldBreak = currentBreak;
 			currentLoop = loop;
-			currentBreak = function(e) return block([call(rest, [nullId], e), mk(EReturn(),e)],e);
+			currentBreak = function(e) return block([retNull(rest,e), mk(EReturn(),e)],e);
 			var ewhile = block([
 				fun("_r",
-					toCps(cond, fun("_c", mk(EIf(ident("_c", cond), toCps(ewh, loop, exit), call(rest, [nullId], cond)),cond)), exit)
+					toCps(cond, fun("_c", mk(EIf(ident("_c", cond), toCps(ewh, loop, exit), retNull(rest,cond)),cond)), exit)
 				, "_loop"+id),
-				call(loop, [nullId], cond),
+				retNull(loop, cond),
 			],e);
 			currentLoop = oldLoop;
 			currentBreak = oldBreak;
 			return ewhile;
 		case EReturn(eret):
-			return eret == null ? call(exit, [nullId], e) : toCps(eret, exit, exit);
+			return eret == null ? retNull(exit, e) : toCps(eret, exit, exit);
 		case EObject(fields):
 			var id = "_o" + uid++;
 			var rest = call(rest, [ident(id,e)], e);
@@ -353,10 +363,10 @@ class Async {
 			return toCps(earr, fun(id1, toCps(eindex, fun(id2, call(rest, [mk(EArray(ident(id1,e), ident(id2,e)),e)], e)), exit)), exit);
 		case EVar(v, t, ev):
 			if( ev == null )
-				return block([e, call(rest, [nullId],e)], e);
+				return block([e, retNull(rest, e)], e);
 			return block([
 				mk(EVar(v, t),e),
-				toCps(ev, fun("_r", block([binop("=", ident(v,e), ident("_r",e), e), call(rest,[nullId],e)], e)), exit),
+				toCps(ev, fun("_r", block([binop("=", ident(v,e), ident("_r",e), e), retNull(rest,e)], e)), exit),
 			],e);
 		case EConst(_), EIdent(_), EUnop(_), EField(_):
 			return call(rest, [e], e);
@@ -375,7 +385,7 @@ class Async {
 			return currentBreak(e);
 		case EContinue:
 			if( currentLoop == null ) throw "Continue outside loop";
-			return block([call(currentLoop, [nullId], e), mk(EReturn(),e)], e);
+			return block([retNull(currentLoop, e), mk(EReturn(),e)], e);
 		case ESwitch(v, cases, def):
 			var cases = [for( c in cases ) { values : c.values, expr : toCps(c.expr, rest, exit) } ];
 			return toCps(v, mk(EFunction([ { name : "_c", t : null } ], mk(ESwitch(ident("_c",v), cases, def == null ? retNull(rest) : toCps(def, rest, exit)),e)),e), exit );

hscript/Bytes.hx

@@ -72,10 +72,7 @@ class Bytes {
 	}
 
 	function doEncodeInt(v: Int) {
-		bout.addByte(v & 0xFF);
-		bout.addByte((v >> 8) & 0xFF);
-		bout.addByte((v >> 16) & 0xFF);
-		bout.addByte(v >>> 24);
+		bout.addInt32(v);
 	}
 
 	function doEncodeConst( c : Const ) {
@@ -107,7 +104,7 @@ class Bytes {
 	}
 
 	function doDecodeInt() {
-		var i = bin.get(pin) | (bin.get(pin+1) << 8) | (bin.get(pin+2) << 16) | (bin.get(pin+3) << 24);
+		var i = bin.getInt32(pin);
 		pin += 4;
 		return i;
 	}
@@ -249,11 +246,17 @@ class Bytes {
 			bout.addByte(args == null ? 0 : args.length + 1);
 			if( args != null ) for( e in args ) doEncode(e);
 			doEncode(e);
+		case ECheckType(e,_):
+			doEncode(e);
 		}
 	}
 
 	function doDecode() : Expr {
 	#if hscriptPos
+		if (bin.get(pin) == 255) {
+			pin++;
+			return null;
+		}
 		var origin = doDecodeString();
 		var line = doDecodeInt();
 		return { e : _doDecode(), pmin : 0, pmax : 0, origin : origin, line : line };
@@ -373,6 +376,8 @@ class Bytes {
 			var count = bin.get(pin++);
 			var args = count == 0 ? null : [for( i in 0...count - 1 ) doDecode()];
 			EMeta(name, args, doDecode());
+		case 26:
+			ECheckType(doDecode(), CTPath(["Void"]));
 		case 255:
 			null;
 		default:

hscript/Checker.hx

@@ -0,0 +1,940 @@
+package hscript;
+import hscript.Expr;
+
+/**
+	This is a special type that can be used in API.
+	It will be type-checked as `Script` but will compile/execute as `Real`
+**/
+typedef TypeCheck<Real,Script> = Real;
+
+enum TType {
+	TMono( r : { r : TType } );
+	TVoid;
+	TInt;
+	TFloat;
+	TBool;
+	TDynamic;
+	TParam( name : String );
+	TUnresolved( name : String );
+	TNull( t : TType );
+	TInst( c : CClass, args : Array<TType> );
+	TEnum( e : CEnum, args : Array<TType> );
+	TType( t : CTypedef, args : Array<TType> );
+	TAbstract( a : CAbstract, args : Array<TType> );
+	TFun( args : Array<{ name : String, opt : Bool, t : TType }>, ret : TType );
+	TAnon( fields : Array<{ name : String, opt : Bool, t : TType }> );
+}
+
+private enum WithType {
+	NoValue;
+	Value;
+	WithType( t : TType );
+}
+
+enum CTypedecl {
+	CTClass( c : CClass );
+	CTEnum( e : CEnum );
+	CTTypedef( t : CTypedef );
+	CTAlias( t : TType );
+	CTAbstract( a : CAbstract );
+}
+
+typedef CNamedType = {
+	var name : String;
+	var params : Array<TType>;
+}
+
+typedef CClass = {> CNamedType,
+	@:optional var superClass : TType;
+	@:optional var constructor : CField;
+	var fields : Map<String,CField>;
+	var statics : Map<String,CField>;
+}
+
+typedef CField = {
+	var isPublic : Bool;
+	var params : Array<TType>;
+	var name : String;
+	var t : TType;
+}
+
+typedef CEnum = {> CNamedType,
+	var constructors : Map<String,TType>;
+}
+
+typedef CTypedef = {> CNamedType,
+	var t : TType;
+}
+
+typedef CAbstract = {> CNamedType,
+}
+
+@:allow(hscript.Checker)
+class CheckerTypes {
+
+	var types : Map<String,CTypedecl> = new Map();
+	var t_string : TType;
+	var localParams : Map<String,TType>;
+
+	public function new() {
+		types = new Map();
+		types.set("Void",CTAlias(TVoid));
+		types.set("Int",CTAlias(TInt));
+		types.set("Float",CTAlias(TFloat));
+		types.set("Bool",CTAlias(TBool));
+		types.set("Dynamic",CTAlias(TDynamic));
+	}
+
+	public function addXmlApi( api : Xml ) {
+		var types = new haxe.rtti.XmlParser();
+		types.process(api, "");
+		var todo = [];
+		for( v in types.root )
+			addXmlType(v,todo);
+		for( f in todo )
+			f();
+		t_string = getType("String");
+	}
+
+	function addXmlType(x:haxe.rtti.CType.TypeTree,todo:Array<Void->Void>) {
+		switch (x) {
+		case TPackage(name, full, subs):
+			for( s in subs ) addXmlType(s,todo);
+		case TClassdecl(c):
+			if( types.exists(c.path) ) return;
+			var cl : CClass = {
+				name : c.path,
+				params : [],
+				fields : new Map(),
+				statics : new Map(),
+			};
+			for( p in c.params )
+				cl.params.push(TParam(p));
+			todo.push(function() {
+				localParams = [for( t in cl.params ) c.path+"."+Checker.typeStr(t) => t];
+				if( c.superClass != null )
+					cl.superClass = getType(c.superClass.path, [for( t in c.superClass.params ) makeXmlType(t)]);
+				var pkeys = [];
+				for( f in c.fields ) {
+					if( f.isOverride || f.name.substr(0,4) == "get_" || f.name.substr(0,4) == "set_" ) continue;
+					var skip = false;
+					for( m in f.meta )
+						if( m.name == ":noScript" ) {
+							skip = true;
+							break;
+						}
+					if( skip ) continue;
+					var fl : CField = { isPublic : f.isPublic, params : [], name : f.name, t : null };
+					for( p in f.params ) {
+						var pt = TParam(p);
+						var key = f.name+"."+p;
+						pkeys.push(key);
+						fl.params.push(pt);
+						localParams.set(key, pt);
+					}
+					fl.t = makeXmlType(f.type);
+					while( pkeys.length > 0 )
+						localParams.remove(pkeys.pop());
+					if( fl.name == "new" )
+						cl.constructor = fl;
+					else
+						cl.fields.set(f.name, fl);
+				}
+				localParams = null;
+			});
+			types.set(cl.name, CTClass(cl));
+		case TEnumdecl(e):
+			if( types.exists(e.path) ) return;
+			var en : CEnum = {
+				name : e.path,
+				params : [],
+				constructors: new Map(),
+			};
+			for( p in e.params )
+				en.params.push(TParam(p));
+			todo.push(function() {
+				localParams = [for( t in en.params ) e.path+"."+Checker.typeStr(t) => t];
+				localParams = null;
+			});
+			types.set(en.name, CTEnum(en));
+		case TTypedecl(t):
+			if( types.exists(t.path) ) return;
+			var td : CTypedef = {
+				name : t.path,
+				params : [],
+				t : null,
+			};
+			for( p in t.params )
+				td.params.push(TParam(p));
+			if( t.path == "hscript.TypeCheck" )
+				td.params.reverse();
+			todo.push(function() {
+				localParams = [for( pt in td.params ) t.path+"."+Checker.typeStr(pt) => pt];
+				td.t = makeXmlType(t.type);
+				localParams = null;
+			});
+			types.set(t.path, CTTypedef(td));
+		case TAbstractdecl(a):
+			if( types.exists(a.path) ) return;
+			var ta : CAbstract = {
+				name : a.path,
+				params : [],
+			};
+			for( p in a.params )
+				ta.params.push(TParam(p));
+			todo.push(function() {
+				localParams = [for( t in ta.params ) a.path+"."+Checker.typeStr(t) => t];
+				localParams = null;
+			});
+			types.set(a.path, CTAbstract(ta));
+		}
+	}
+
+	function makeXmlType( t : haxe.rtti.CType.CType ) : TType {
+		return switch (t) {
+		case CUnknown: TUnresolved("Unknown");
+		case CEnum(name, params): getType(name,[for( t in params ) makeXmlType(t)]);
+		case CClass(name, params): getType(name,[for( t in params ) makeXmlType(t)]);
+		case CTypedef(name, params): getType(name,[for( t in params ) makeXmlType(t)]);
+		case CFunction(args, ret): TFun([for( a in args ) { name : a.name, opt : a.opt, t : makeXmlType(a.t) }], makeXmlType(ret));
+		case CAnonymous(fields):
+			inline function isOpt(m:haxe.rtti.CType.MetaData) {
+				if( m == null ) return false;
+				var b = false;
+				for( m in m ) if( m.name == ":optional" ) { b = true; break; }
+				return b;
+			}
+			TAnon([for( f in fields ) { name : f.name, t : makeXmlType(f.type), opt : isOpt(f.meta) }]);
+		case CDynamic(t): TDynamic;
+		case CAbstract(name, params):
+			switch( name ) {
+			default:
+				getType(name,[for( t in params ) makeXmlType(t)]);
+			}
+		}
+	}
+
+	function getType( name : String, ?args : Array<TType> ) : TType {
+		if( localParams != null ) {
+			var t = localParams.get(name);
+			if( t != null ) return t;
+		}
+		var t = resolve(name,args);
+		if( t == null )
+			return TUnresolved(name); // most likely private class
+		return t;
+	}
+
+	public function resolve( name : String, ?args : Array<TType> ) : TType {
+		if( name == "Null" ) {
+			if( args == null || args.length != 1 ) throw "Missing Null<T> parameter";
+			return TNull(args[0]);
+		}
+		var t = types.get(name);
+		if( t == null ) return null;
+		if( args == null ) args = [];
+		return switch( t ) {
+		case CTClass(c): TInst(c,args);
+		case CTEnum(e): TEnum(e,args);
+		case CTTypedef(t): TType(t,args);
+		case CTAbstract(a): TAbstract(a, args);
+		case CTAlias(t): t;
+		}
+	}
+
+}
+
+class Checker {
+
+	public var types : CheckerTypes;
+	var locals : Map<String,TType>;
+	var globals : Map<String,TType> = new Map();
+	var events : Map<String,TType> = new Map();
+	public var allowAsync : Bool;
+	public var allowReturn : Null<TType>;
+
+	public function new( ?types ) {
+		if( types == null ) types = new CheckerTypes();
+		this.types = types;
+	}
+
+	public function setGlobal( name : String, type : TType ) {
+		globals.set(name, type);
+	}
+
+	public function setEvent( name : String, type : TType ) {
+		events.set(name, type);
+	}
+
+	public function getGlobals() {
+		return globals;
+	}
+
+	public function check( expr : Expr, ?withType : WithType ) {
+		if( withType == null ) withType = NoValue;
+		locals = new Map();
+		return typeExpr(expr,withType);
+	}
+
+	inline function edef( e : Expr ) {
+		#if hscriptPos
+		return e.e;
+		#else
+		return e;
+		#end
+	}
+
+	inline function error( msg : String, curExpr : Expr ) {
+		var e = ECustom(msg);
+		#if hscriptPos var e = new Error(e, curExpr.pmin, curExpr.pmax, curExpr.origin, curExpr.line); #end
+		throw e;
+	}
+
+	function saveLocals() {
+		return [for( k in locals.keys() ) k => locals.get(k)];
+	}
+
+	function makeType( t : CType, e : Expr ) : TType {
+		return switch (t) {
+		case CTPath(path, params):
+			var ct = types.resolve(path.join("."),params == null ? [] : [for( p in params ) makeType(t,e)]);
+			if( ct == null ) error("Unknown type "+path, e);
+			return ct;
+		case CTFun(args, ret):
+			var i = 0;
+			return TFun([for( a in args ) { name : "p"+(i++), opt : false, t : makeType(a,e) }], makeType(ret,e));
+		case CTAnon(fields):
+			return TAnon([for( f in fields ) { name : f.name, opt : false, t : makeType(f.t,e) }]);
+		case CTParent(t):
+			return makeType(t,e);
+		}
+	}
+
+	public static function typeStr( t : TType ) {
+		inline function makeArgs(args:Array<TType>) return args.length==0 ? "" : "<"+[for( t in args ) typeStr(t)].join(",")+">";
+		return switch (t) {
+		case TMono(r): r.r == null ? "Unknown" : typeStr(r.r);
+		case TInst(c, args): c.name + makeArgs(args);
+		case TEnum(e, args): e.name + makeArgs(args);
+		case TType(t, args): t.name + makeArgs(args);
+		case TAbstract(a, args): a.name + makeArgs(args);
+		case TFun(args, ret): "(" + [for( a in args ) (a.opt?"?":"")+(a.name == "" ? "" : a.name+":")+typeStr(a.t)].join(", ")+") -> "+typeStr(ret);
+		case TAnon(fields): "{" + [for( f in fields ) (f.opt?"?":"")+f.name+":"+typeStr(f.t)].join(", ")+"}";
+		case TParam(name): name;
+		case TNull(t): "Null<"+typeStr(t)+">";
+		case TUnresolved(name): "?"+name;
+		default: t.getName().substr(1);
+		}
+	}
+
+	function linkLoop( a : TType, t : TType ) {
+		if( t == a ) return true;
+		switch( t ) {
+		case TMono(r):
+			if( r.r == null ) return false;
+			return linkLoop(a,r.r);
+		case TEnum(_,tl), TInst(_,tl), TType(_,tl), TAbstract(_,tl):
+			for( t in tl )
+				if( linkLoop(a,t) )
+					return true;
+			return false;
+		case TFun(args,ret):
+			for( arg in args )
+				if( linkLoop(a,arg.t) )
+					return true;
+			return linkLoop(a,ret);
+		case TDynamic:
+			if( t == TDynamic )
+				return false;
+			return linkLoop(a,TDynamic);
+		case TAnon(fl):
+			for( f in fl )
+				if( linkLoop(a, f.t) )
+					return true;
+			return false;
+		default:
+			return false;
+		}
+	}
+
+	function link( a : TType, b : TType, r : { r : TType } ) {
+		if( linkLoop(a,b) )
+			return follow(b) == a;
+		if( b == TDynamic )
+			return true;
+		r.r = b;
+		return true;
+	}
+
+	function typeEq( t1 : TType, t2 : TType ) {
+		if( t1 == t2 )
+			return true;
+		switch( [t1,t2] ) {
+		case [TMono(r), _]:
+			if( r.r == null ) {
+				if( !link(t1,t2,r) )
+					return false;
+				r.r = t2;
+				return true;
+			}
+			return typeEq(r.r, t2);
+		case [_, TMono(r)]:
+			if( r.r == null ) {
+				if( !link(t2,t1,r) )
+					return false;
+				r.r = t1;
+				return true;
+			}
+			return typeEq(t1, r.r);
+		case [TType(t1,pl1),TType(t2,pl2)] if( t1 == t2 ):
+			for( i in 0...pl1.length )
+				if( !typeEq(pl1[i],pl2[i]) )
+					return false;
+			return true;
+		case [TType(t1,pl1), _]:
+			return typeEq(apply(t1.t, t1.params, pl1), t2);
+		case [_,TType(t2,pl2)]:
+			return typeEq(t1, apply(t2.t, t2.params, pl2));
+		case [TInst(cl1,pl1), TInst(cl2,pl2)] if( cl1 == cl2 ):
+			for( i in 0...pl1.length )
+				if( !typeEq(pl1[i],pl2[i]) )
+					return false;
+			return true;
+		case [TEnum(e1,pl1), TEnum(e2,pl2)] if( e1 == e2 ):
+			for( i in 0...pl1.length )
+				if( !typeEq(pl1[i],pl2[i]) )
+					return false;
+			return true;
+		case [TAbstract(a1,pl1), TAbstract(a2,pl2)] if( a1 == a2 ):
+			for( i in 0...pl1.length )
+				if( !typeEq(pl1[i],pl2[i]) )
+					return false;
+			return true;
+		case [TNull(t1), TNull(t2)]:
+			return typeEq(t1,t2);
+		case [TNull(t1), _]:
+			return typeEq(t1,t2);
+		case [_, TNull(t2)]:
+			return typeEq(t1,t2);
+		case [TFun(args1,r1), TFun(args2,r2)] if( args1.length == args2.length ):
+			for( i in 0...args1.length )
+				if( !typeEq(args1[i].t, args2[i].t) )
+					return false;
+			return typeEq(r1, r2);
+		case [TAnon(a1),TAnon(a2)] if( a1.length == a2.length ):
+			var m = new Map();
+			for( f in a2 )
+				m.set(f.name, f);
+			for( f1 in a1 ) {
+				var f2 = m.get(f1.name);
+				if( f2 == null ) return false;
+				if( !typeEq(f1.t,f2.t) )
+					return false;
+			}
+			return true;
+		default:
+		}
+		return false;
+	}
+
+	function tryUnify( t1 : TType, t2 : TType ) {
+		if( t1 == t2 )
+			return true;
+		switch( [t1,t2] ) {
+		case [TMono(r), _]:
+			if( r.r == null ) {
+				if( !link(t1,t2,r) )
+					return false;
+				r.r = t2;
+				return true;
+			}
+			return tryUnify(r.r, t2);
+		case [_, TMono(r)]:
+			if( r.r == null ) {
+				if( !link(t2,t1,r) )
+					return false;
+				r.r = t1;
+				return true;
+			}
+			return tryUnify(t1, r.r);
+		case [TType(t1,pl1), _]:
+			return tryUnify(apply(t1.t, t1.params, pl1), t2);
+		case [_,TType(t2,pl2)]:
+			return tryUnify(t1, apply(t2.t, t2.params, pl2));
+		case [TNull(t1), _]:
+			return tryUnify(t1,t2);
+		case [_, TNull(t2)]:
+			return tryUnify(t1,t2);
+		case [TFun(args1,r1),TFun(args2,r2)] if( args1.length == args2.length ):
+			for( i in 0...args1.length ) {
+				var a1 = args1[i];
+				var a2 = args2[i];
+				if( a2.opt && !a1.opt ) return false;
+				if( !tryUnify(a2.t, a1.t) ) return false;
+			}
+			return tryUnify(r1,r2);
+		case [_, TDynamic]:
+			return true;
+		case [TDynamic, _]:
+			return true;
+		case [TAnon(a1),TAnon(a2)]:
+			var m = new Map();
+			for( f in a1 )
+				m.set(f.name, f);
+			for( f2 in a2 ) {
+				var f1 = m.get(f2.name);
+				if( f1 == null ) {
+					if( f2.opt ) continue;
+					return false;
+				}
+				if( !typeEq(f1.t,f2.t) )
+					return false;
+			}
+			return true;
+		case [TInst(cl1,pl1), TInst(cl2,pl2)]:
+			while( cl1 != cl2 ) {
+				switch( cl1.superClass ) {
+				case null: return false;
+				case TInst(c, args):
+					pl1 = [for( a in args ) apply(a,cl1.params,pl1)];
+					cl1 = c;
+				default: throw "assert";
+				}
+			}
+			for( i in 0...pl1.length )
+				if( !typeEq(pl1[i],pl2[i]) )
+					return false;
+			return true;
+		case [TInt, TFloat]:
+			return true;
+		case [TFun(_), TAbstract({ name : "haxe.Function" },_)]:
+			return true;
+		default:
+		}
+		return typeEq(t1,t2);
+	}
+
+	function unify( t1 : TType, t2 : TType, e : Expr ) {
+		if( !tryUnify(t1,t2) )
+			error(typeStr(t1)+" should be "+typeStr(t2),e);
+	}
+
+	function apply( t : TType, params : Array<TType>, args : Array<TType> ) {
+		if( args.length != params.length ) throw "Invalid number of type parameters";
+		if( args.length == 0 )
+			return t;
+		var subst = new Map();
+		for( i in 0...params.length )
+			subst.set(params[i], args[i]);
+		function map(t:TType) {
+			var st = subst.get(t);
+			if( st != null ) return st;
+			return mapType(t,map);
+		}
+		return map(t);
+	}
+
+	public function mapType( t : TType, f : TType -> TType ) {
+		switch (t) {
+		case TMono(r):
+			if( r.r == null ) return t;
+			return f(t);
+		case TVoid, TInt, TFloat,TBool,TDynamic,TParam(_), TUnresolved(_):
+			return t;
+		case TEnum(_,[]), TInst(_,[]), TAbstract(_,[]), TType(_,[]):
+			return t;
+		case TNull(t):
+			return TNull(f(t));
+		case TInst(c, args):
+			return TInst(c, [for( t in args ) f(t)]);
+		case TEnum(e, args):
+			return TEnum(e, [for( t in args ) f(t)]);
+		case TType(t, args):
+			return TType(t, [for( t in args ) f(t)]);
+		case TAbstract(a, args):
+			return TAbstract(a, [for( t in args ) f(t)]);
+		case TFun(args, ret):
+			return TFun([for( a in args ) { name : a.name, opt : a.opt, t : f(a.t) }], f(ret));
+		case TAnon(fields):
+			return TAnon([for( af in fields ) { name : af.name, opt : af.opt, t : f(af.t) }]);
+		}
+	}
+
+	public function follow( t : TType ) {
+		return switch( t ) {
+		case TMono(r): if( r.r != null ) follow(r.r) else t;
+		case TType(t,args): apply(t.t, t.params, args);
+		case TNull(t): follow(t);
+		default: t;
+		}
+	}
+
+	public function getFields( t : TType ) {
+		var fields = [];
+		while( t != null ) {
+			t = follow(t);
+			switch( t ) {
+			case TInst(c, args):
+				for( fname in c.fields.keys() ) {
+					var f = c.fields.get(fname);
+					fields.push({ name : f.name, t : f.t });
+				}
+				t = c.superClass;
+			case TAnon(fl):
+				for( f in fl )
+					fields.push({ name : f.name, t : f.t });
+				break;
+			default:
+			}
+		}
+		return fields;
+	}
+
+	function getField( t : TType, f : String, e : Expr ) {
+		switch( follow(t) ) {
+		case TInst(c, args):
+			var cf = c.fields.get(f);
+			if( cf == null && allowAsync ) {
+				cf = c.fields.get("a_"+f);
+				if( cf != null ) {
+					var isPublic = true; // consider a_ prefixed as script specific
+					cf = { isPublic : isPublic, params : cf.params, name : cf.name, t : unasync(cf.t) };
+					if( cf.t == null ) cf = null;
+				}
+			}
+			if( cf == null ) {
+				if( c.superClass == null ) return null;
+				var ft = getField(c.superClass, f, e);
+				if( ft != null ) ft = apply(ft, c.params, args);
+				return ft;
+			}
+			if( !cf.isPublic )
+				error("Can't access private field "+f+" on "+c.name, e);
+			return apply(cf.t, c.params, args);
+		case TDynamic:
+			return makeMono();
+		case TAnon(fields):
+			for( af in fields )
+				if( af.name == f )
+					return af.t;
+			return null;
+		default:
+			return null;
+		}
+	}
+
+	public function unasync( t : TType ) : TType {
+		switch( follow(t) ) {
+		case TFun(args, ret) if( args.length > 0 ):
+			var rargs = args.copy();
+			switch( follow(rargs.shift().t) ) {
+			case TFun([r],_): return TFun(rargs,r.t);
+			default:
+			}
+		default:
+		}
+		return null;
+	}
+
+	function typeExprWith( expr : Expr, t : TType ) {
+		var et = typeExpr(expr, WithType(t));
+		unify(et, t, expr);
+		return t;
+	}
+
+	function makeMono() {
+		return TMono({r:null});
+	}
+
+	function makeIterator(t) : TType {
+		return TAnon([{ name : "next", opt : false, t : TFun([],t) }, { name : "hasNext", opt : false, t : TFun([],TBool) }]);
+	}
+
+	function mk(e,p) : Expr {
+		#if hscriptPos
+		return { e : e, pmin : p.pmin, pmax : p.pmax, origin : p.origin, line : p.line };
+		#else
+		return e;
+		#end
+	}
+
+	function isString( t : TType ) {
+		t = follow(t);
+		return t.match(TInst({name:"String"},_));
+	}
+
+	function typeExpr( expr : Expr, withType : WithType ) : TType {
+		switch( edef(expr) ) {
+		case EConst(c):
+			return switch (c) {
+			case CInt(_): TInt;
+			case CFloat(_): TFloat;
+			case CString(_): types.t_string;
+			}
+		case EIdent(v):
+			var l = locals.get(v);
+			if( l != null ) return l;
+			var g = globals.get(v);
+			if( g != null ) return g;
+			if( allowAsync ) {
+				g = globals.get("a_"+v);
+				if( g != null ) g = unasync(g);
+				if( g != null ) return g;
+			}
+			switch( v ) {
+			case "null":
+				return makeMono();
+			case "true", "false":
+				return TBool;
+			case "trace":
+				return TDynamic;
+			default:
+				error("Unknown identifier "+v, expr);
+			}
+		case EBlock(el):
+			var t = TVoid;
+			var locals = saveLocals();
+			for( e in el )
+				t = typeExpr(e, e == el[el.length-1] ? withType : NoValue);
+			this.locals = locals;
+			return t;
+		case EVar(n, t, init):
+			var vt = t == null ? makeMono() : makeType(t, expr);
+			if( init != null ) {
+				var et = typeExpr(init, t == null ? Value : WithType(vt));
+				if( t == null ) vt = et else unify(et,vt, init);
+			}
+			locals.set(n, vt);
+			return TVoid;
+		case EParent(e):
+			return typeExpr(e,withType);
+		case ECall(e, params):
+			var ft = typeExpr(e, Value);
+			switch( follow(ft) ) {
+			case TFun(args, ret):
+				for( i in 0...params.length ) {
+					var a = args[i];
+					if( a == null ) error("Too many arguments", params[i]);
+					var t = typeExpr(params[i], WithType(a.t));
+					unify(t, a.t, params[i]);
+				}
+				for( i in params.length...args.length )
+					if( !args[i].opt )
+						error("Missing argument '"+args[i].name+"'", expr);
+				return ret;
+			case TDynamic:
+				for( p in params ) typeExpr(p,Value);
+				return TDynamic;
+			default:
+				error(typeStr(ft)+" cannot be called", e);
+			}
+		case EField(o, f):
+			var ot = typeExpr(o, Value);
+			var ft = getField(ot, f, expr);
+			if( ft == null )
+				error(typeStr(ot)+" has no field "+f, expr);
+			return ft;
+		case ECheckType(v, t):
+			var ct = makeType(t, expr);
+			var vt = typeExpr(v, WithType(ct));
+			unify(vt, ct, v);
+			return ct;
+		case EMeta(_, _, e):
+			return typeExpr(e, withType);
+		case EIf(cond, e1, e2), ETernary(cond, e1, e2):
+			typeExprWith(cond, TBool);
+			var t1 = typeExpr(e1, withType);
+			if( e2 == null )
+				return t1;
+			var t2 = typeExpr(e2, withType);
+			if( withType == NoValue )
+				return TVoid;
+			if( tryUnify(t2,t1) )
+				return t1;
+			if( tryUnify(t1,t2) )
+				return t2;
+			unify(t2,t1,e2); // error
+		case EWhile(cond, e), EDoWhile(cond, e):
+			typeExprWith(cond,TBool);
+			typeExpr(e, NoValue);
+			return TVoid;
+		case EObject(fl):
+			switch( withType ) {
+			case WithType(follow(_) => TAnon(tfields)):
+				var map = [for( f in tfields ) f.name => f];
+				return TAnon([for( f in fl ) {
+					var ft = map.get(f.name);
+					if( ft == null ) error("Extra field "+f.name, f.e);
+					{ t : typeExprWith(f.e, ft.t), opt : false, name : f.name }
+				}]);
+			default:
+				return TAnon([for( f in fl ) { t : typeExpr(f.e, Value), opt : false, name : f.name }]);
+			}
+		case EBreak, EContinue:
+			return TVoid;
+		case EReturn(v):
+			var et = v == null ? TVoid : typeExpr(v, allowReturn == null ? Value : WithType(allowReturn));
+			if( allowReturn == null )
+				error("Return not allowed here", expr);
+			else
+				unify(et, allowReturn, v == null ? expr : v);
+			return TDynamic;
+		case EArrayDecl(el):
+			var et = null;
+			for( v in el ) {
+				var t = typeExpr(v, et == null ? Value : WithType(et));
+				if( et == null ) et = t else if( !tryUnify(t,et) ) {
+					if( tryUnify(et,t) ) et = t else unify(t,et,v);
+				}
+			}
+			if( et == null ) et = TDynamic;
+			return types.getType("Array",[et]);
+		case EArray(a, index):
+			typeExprWith(index, TInt);
+			var at = typeExpr(a, Value);
+			switch( follow(at) ) {
+			case TInst({ name : "Array"},[et]): return et;
+			default: error(typeStr(at)+" is not an Array", a);
+			}
+		case EThrow(e):
+			typeExpr(e, Value);
+			return TDynamic;
+		case EFunction(args, body, name, ret):
+			var tret = ret == null ? makeMono() : makeType(ret, expr);
+			var locals = saveLocals();
+			var oldRet = allowReturn;
+			allowReturn = tret;
+			var withArgs = null;
+			if( name != null && !withType.match(WithType(follow(_) => TFun(_))) ) {
+				var ev = events.get(name);
+				if( ev != null ) withType = WithType(ev);
+			}
+			switch( withType ) {
+			case WithType(follow(_) => TFun(args,ret)): withArgs = args; unify(tret,ret,expr);
+			default:
+			}
+			var targs = [for( i in 0...args.length ) {
+				var a = args[i];
+				var at = a.t == null ? makeMono() : makeType(a.t, expr);
+				if( withArgs != null && withArgs.length > i )
+					unify(withArgs[i].t, at, expr);
+				this.locals.set(a.name, at);
+				{ name : a.name, opt : a.opt, t : at };
+			}];
+
+			typeExpr(body,NoValue);
+			allowReturn = oldRet;
+			this.locals = locals;
+			var ft = TFun(targs,tret);
+			if( name != null )
+				locals.set(name, ft);
+			return ft;
+		case EUnop(op, _, e):
+			var et = typeExpr(e, Value);
+			switch( op ) {
+			case "++", "--":
+				unify(et,TInt,e);
+				return et;
+			case "!":
+				unify(et,TBool,e);
+				return et;
+			default:
+			}
+		case EFor(v, it, e):
+			var locals = saveLocals();
+			var itt = typeExpr(it, Value);
+			var vt = switch( follow(itt) ) {
+			case TInst({name:"Array"},[t]):
+				t;
+			default:
+				var t = makeMono();
+				var iter = makeIterator(t);
+				unify(itt,iter,it);
+				t;
+			}
+			this.locals.set(v, vt);
+			typeExpr(e, Value);
+			this.locals = locals;
+			return TVoid;
+		case EBinop(op, e1, e2):
+			switch( op ) {
+			case "&", "|", "^", ">>", ">>>", "<<":
+				typeExprWith(e1,TInt);
+				typeExprWith(e2,TInt);
+				return TInt;
+			case "=":
+				var vt = typeExpr(e1, Value);
+				typeExprWith(e2,vt);
+				return vt;
+			case "+":
+				var t1 = typeExpr(e1,WithType(TInt));
+				var t2 = typeExpr(e2,WithType(t1));
+				tryUnify(t1,t2);
+				switch( [follow(t1), follow(t2)]) {
+				case [TInt, TInt]:
+					return TInt;
+				case [TFloat, TInt], [TInt, TFloat], [TFloat, TFloat]:
+					return TFloat;
+				case [TDynamic, _], [_, TDynamic]:
+					return TDynamic;
+				case [t1,t2]:
+					if( isString(t1) || isString(t2) )
+						return types.t_string;
+					unify(t1, TFloat, e1);
+					unify(t2, TFloat, e2);
+				}
+			case "-", "*", "/", "%":
+				var t1 = typeExpr(e1,WithType(TInt));
+				var t2 = typeExpr(e2,WithType(t1));
+				if( !tryUnify(t1,t2) )
+					unify(t2,t1,e2);
+				switch( [follow(t1), follow(t2)]) {
+				case [TInt, TInt]:
+					if( op == "/" ) return TFloat;
+					return TInt;
+				case [TFloat|TDynamic, TInt|TDynamic], [TInt|TDynamic, TFloat|TDynamic], [TFloat, TFloat]:
+					return TFloat;
+				default:
+					unify(t1, TFloat, e1);
+					unify(t2, TFloat, e2);
+				}
+			case "&&", "||":
+				typeExprWith(e1,TBool);
+				typeExprWith(e2,TBool);
+				return TBool;
+			case "...":
+				typeExprWith(e1,TInt);
+				typeExprWith(e2,TInt);
+				return makeIterator(TInt);
+			case "==", "!=":
+				var t1 = typeExpr(e1,Value);
+				var t2 = typeExpr(e2,WithType(t1));
+				if( !tryUnify(t1,t2) )
+					unify(t2,t1,e2);
+				return TBool;
+			case ">", "<", ">=", "<=":
+				var t1 = typeExpr(e1,Value);
+				var t2 = typeExpr(e2,WithType(t1));
+				if( !tryUnify(t1,t2) )
+					unify(t2,t1,e2);
+				switch( follow(t1) ) {
+				case TInt, TFloat, TBool, TInst({name:"String"},_):
+				default:
+					error("Cannot compare "+typeStr(t1), expr);
+				}
+				return TBool;
+			default:
+				if( op.charCodeAt(op.length-1) == "=".code ) {
+					var t = typeExpr(mk(EBinop(op.substr(0,op.length-1),e1,e2),expr),withType);
+					return typeExpr(mk(EBinop("=",e1,e2),expr), withType);
+				}
+				error("Unsupported operation "+op, expr);
+			}
+		case ENew(cl, params):
+		case ETry(e, v, t, ecatch):
+		case ESwitch(e, cases, defaultExpr):
+		}
+		error("Don't know how to type "+edef(expr).getName(), expr);
+	}
+
+}

hscript/Expr.hx

@@ -40,6 +40,7 @@ typedef Expr = {
 }
 enum ExprDef {
 #else
+typedef ExprDef = Expr;
 enum Expr {
 #end
 	EConst( c : Const );
@@ -68,6 +69,7 @@ enum Expr {
 	ESwitch( e : Expr, cases : Array<{ values : Array<Expr>, expr : Expr }>, ?defaultExpr : Expr);
 	EDoWhile( cond : Expr, e : Expr);
 	EMeta( name : String, args : Array<Expr>, e : Expr );
+	ECheckType( e : Expr, t : CType );
 }
 
 typedef Argument = { name : String, ?t : CType, ?opt : Bool, ?value : Expr };
@@ -79,6 +81,8 @@ enum CType {
 	CTFun( args : Array<CType>, ret : CType );
 	CTAnon( fields : Array<{ name : String, t : CType, ?meta : Metadata }> );
 	CTParent( t : CType );
+	CTOpt( t : CType );
+	CTNamed( n : String, t : CType );
 }
 
 #if hscriptPos

hscript/Interp.hx

@@ -122,7 +122,7 @@ class Interp {
 
 	function assign( e1 : Expr, e2 : Expr ) : Dynamic {
 		var v = expr(e2);
-		switch( edef(e1) ) {
+		switch( Tools.expr(e1) ) {
 		case EIdent(id):
 			var l = locals.get(id);
 			if( l == null )
@@ -154,7 +154,7 @@ class Interp {
 
 	function evalAssignOp(op,fop,e1,e2) : Dynamic {
 		var v;
-		switch( edef(e1) ) {
+		switch( Tools.expr(e1) ) {
 		case EIdent(id):
 			var l = locals.get(id);
 			v = fop(expr(e1),expr(e2));
@@ -280,14 +280,6 @@ class Interp {
 		}
 	}
 
-	inline function edef( e : Expr ) {
-		#if hscriptPos
-		return e.e;
-		#else
-		return e;
-		#end
-	}
-
 	inline function error(e : #if hscriptPos ErrorDef #else Error #end, rethrow=false ) : Dynamic {
 		#if hscriptPos var e = new Error(e, curExpr.pmin, curExpr.pmax, curExpr.origin, curExpr.line); #end
 		if( rethrow ) this.rethrow(e) else throw e;
@@ -372,7 +364,7 @@ class Interp {
 			for( p in params )
 				args.push(expr(p));
 
-			switch( edef(e) ) {
+			switch( Tools.expr(e) ) {
 			case EField(e,f):
 				var obj = expr(e);
 				if( obj == null ) error(EInvalidAccess(f));
@@ -468,7 +460,7 @@ class Interp {
 			}
 			return f;
 		case EArrayDecl(arr):
-			if (arr.length > 0 && edef(arr[0]).match(EBinop("=>", _))) {
+			if (arr.length > 0 && Tools.expr(arr[0]).match(EBinop("=>", _))) {
 				var isAllString:Bool = true;
 				var isAllInt:Bool = true;
 				var isAllObject:Bool = true;
@@ -476,7 +468,7 @@ class Interp {
 				var keys:Array<Dynamic> = [];
 				var values:Array<Dynamic> = [];
 				for (e in arr) {
-					switch(edef(e)) {
+					switch(Tools.expr(e)) {
 						case EBinop("=>", eKey, eValue): {
 							var key:Dynamic = expr(eKey);
 							var value:Dynamic = expr(eValue);
@@ -574,6 +566,8 @@ class Interp {
 			return val;
 		case EMeta(_, _, e):
 			return expr(e);
+		case ECheckType(e,_):
+			return expr(e);
 		}
 		return null;
 	}

hscript/Macro.hx

@@ -113,6 +113,7 @@ class Macro {
 
 	function convertType( t : Expr.CType ) : ComplexType {
 		return switch( t ) {
+		case CTOpt(t): TOptional(convertType(t));
 		case CTPath(pack, args):
 			var params = [];
 			if( args != null )
@@ -127,6 +128,12 @@ class Macro {
 		case CTParent(t): TParent(convertType(t));
 		case CTFun(args, ret):
 			TFunction(map(args,convertType), convertType(ret));
+		case CTNamed(name, convertType(_) => ct):
+			#if (haxe_ver >= 4)
+				TNamed(name, ct);
+			#else
+				ct;
+			#end
 		case CTAnon(fields):
 			var tf = [];
 			for( f in fields ) {
@@ -238,6 +245,8 @@ class Macro {
 			case EMeta(m, params, esub):
 				var mpos = #if hscriptPos { file : p.file, min : e.pmin, max : e.pmax } #else p #end;
 				EMeta({ name : m, params : params == null ? [] : [for( p in params ) convert(p)], pos : mpos }, convert(esub));
+			case ECheckType(e, t):
+				ECheckType(convert(e), convertType(t));
 		}, pos : #if hscriptPos { file : p.file, min : e.pmin, max : e.pmax } #else p #end }
 	}
 

hscript/Parser.hx

@@ -150,7 +150,7 @@ class Parser {
 	}
 
 	public function invalidChar(c) {
-		error(EInvalidChar(c), readPos, readPos);
+		error(EInvalidChar(c), readPos-1, readPos-1);
 	}
 
 	function initParser( origin ) {
@@ -359,8 +359,31 @@ class Parser {
 			return parseExprNext(mk(EConst(c)));
 		case TPOpen:
 			var e = parseExpr();
-			ensure(TPClose);
-			return parseExprNext(mk(EParent(e),p1,tokenMax));
+			tk = token();
+			switch( tk ) {
+			case TPClose:
+				return parseExprNext(mk(EParent(e),p1,tokenMax));
+			case TDoubleDot:
+				var t = parseType();
+				tk = token();
+				switch( tk ) {
+				case TPClose:
+					return parseExprNext(mk(ECheckType(e,t),p1,tokenMax));
+				case TComma:
+					switch( expr(e) ) {
+					case EIdent(v): return parseLambda([{ name : v, t : t }], pmin(e));
+					default:
+					}
+				default:
+				}
+			case TComma:
+				switch( expr(e) ) {
+				case EIdent(v): return parseLambda([{name:v}], pmin(e));
+				default:
+				}
+			default:
+			}
+			return unexpected(tk);
 		case TBrOpen:
 			tk = token();
 			switch( tk ) {
@@ -450,6 +473,25 @@ class Parser {
 		}
 	}
 
+	function parseLambda( args : Array<Argument>, pmin ) {
+		while( true ) {
+			var id = getIdent();
+			var t = maybe(TDoubleDot) ? parseType() : null;
+			args.push({ name : id, t : t });
+			var tk = token();
+			switch( tk ) {
+			case TComma:
+			case TPClose:
+				break;
+			default:
+				unexpected(tk);
+			}
+		}
+		ensureToken(TOp("->"));
+		var eret = parseExpr();
+		return mk(EFunction(args, mk(EReturn(eret),pmin)), pmin);
+	}
+
 	function parseMetaArgs() {
 		var tk = token();
 		if( tk != TPOpen ) {
@@ -709,6 +751,21 @@ class Parser {
 		var tk = token();
 		switch( tk ) {
 		case TOp(op):
+
+			if( op == "->" ) {
+				// single arg reinterpretation of `f -> e` , `(f) -> e` and `(f:T) -> e`
+				switch( expr(e1) ) {
+				case EIdent(i), EParent(expr(_) => EIdent(i)):
+					var eret = parseExpr();
+					return mk(EFunction([{ name : i }], mk(EReturn(eret),pmin(eret))), pmin(e1));
+				case ECheckType(expr(_) => EIdent(i), t):
+					var eret = parseExpr();
+					return mk(EFunction([{ name : i, t : t }], mk(EReturn(eret),pmin(eret))), pmin(e1));
+				default:
+				}
+				unexpected(tk);
+			}
+
 			if( unops.get(op) ) {
 				if( isBlock(e1) || switch(expr(e1)) { case EParent(_): true; default: false; } ) {
 					push(tk);
@@ -737,8 +794,7 @@ class Parser {
 		}
 	}
 
-	function parseFunctionDecl() {
-		ensure(TPOpen);
+	function parseFunctionArgs() {
 		var args = new Array();
 		var tk = token();
 		if( tk != TPClose ) {
@@ -774,10 +830,16 @@ class Parser {
 					unexpected(tk);
 				}
 			}
-		}
+		}	
+		return args;	
+	}
+
+	function parseFunctionDecl() {
+		ensure(TPOpen);
+		var args = parseFunctionArgs();
 		var ret = null;
 		if( allowTypes ) {
-			tk = token();
+			var tk = token();
 			if( tk != TDoubleDot )
 				push(tk);
 			else
@@ -837,9 +899,53 @@ class Parser {
 			}
 			return parseTypeNext(CTPath(path, params));
 		case TPOpen:
-			var t = parseType();
-			ensure(TPClose);
-			return parseTypeNext(CTParent(t));
+			var a = token(),
+					b = token();
+			
+			push(b); 
+			push(a);
+
+			function withReturn(args) {
+				switch token() { // I think it wouldn't hurt if ensure used enumEq
+					case TOp('->'): 
+					case t: unexpected(t);
+				}
+
+				return CTFun(args, parseType());
+			}
+
+			switch [a, b] {
+				case [TPClose, _] | [TId(_), TDoubleDot]:
+					
+					var args = [for (arg in parseFunctionArgs()) {
+						switch arg.value {
+							case null:
+							case v:
+								error(ECustom('Default values not allowed in function types'), #if hscriptPos v.pmin, v.pmax #else 0, 0 #end);
+						}
+
+						CTNamed(arg.name, if (arg.opt) CTOpt(arg.t) else arg.t);
+					}];
+
+					return withReturn(args);
+				default:
+					
+					var t = parseType();
+					return switch token() {
+						case TComma:
+							var args = [t];
+							
+							while (true) {
+								args.push(parseType());
+								if (!maybe(TComma)) break;
+							}
+							ensure(TPClose);
+							withReturn(args);
+						case TPClose:
+							parseTypeNext(CTParent(t));
+						case t: unexpected(t);
+					}
+			}
 		case TBrOpen:
 			var fields = [];
 			var meta = null;

hscript/Printer.hx

@@ -48,6 +48,9 @@ class Printer {
 
 	function type( t : CType ) {
 		switch( t ) {
+		case CTOpt(t): 
+			add('?');
+			type(t);
 		case CTPath(path, params):
 			add(path.join("."));
 			if( params != null ) {
@@ -59,6 +62,19 @@ class Printer {
 				}
 				add(">");
 			}
+		case CTNamed(name, t):
+			add(name);
+			add(':');
+			type(t);
+		case CTFun(args, ret) if (Lambda.exists(args, function (a) return a.match(CTNamed(_, _)))):
+			add('(');
+			for (a in args)
+				switch a {
+					case CTNamed(_, _): type(a);
+					default: type(CTNamed('_', a));
+				}
+			add(')->');
+			type(ret);
 		case CTFun(args, ret):
 			if( args.length == 0 )
 				add("Void -> ");
@@ -300,6 +316,12 @@ class Printer {
 			}
 			add(" ");
 			expr(e);
+		case ECheckType(e, t):
+			add("(");
+			expr(e);
+			add(" : ");
+			addType(t);
+			add(")");
 		}
 	}
 

hscript/Tools.hx

@@ -25,7 +25,7 @@ import hscript.Expr;
 class Tools {
 
 	public static function iter( e : Expr, f : Expr -> Void ) {
-		switch( #if hscriptPos e.e #else e #end ) {
+		switch( expr(e) ) {
 		case EConst(_), EIdent(_):
 		case EVar(_, _, e): if( e != null ) f(e);
 		case EParent(e): f(e);
@@ -56,16 +56,13 @@ class Tools {
 			}
 			if( def != null ) f(def);
 		case EMeta(name, args, e): if( args != null ) for( a in args ) f(a); f(e);
+		case ECheckType(e,_): f(e);
 		}
 	}
 
 	public static function map( e : Expr, f : Expr -> Expr ) {
-		#if hscriptPos
-		var edef = switch( e.e ) {
-		#else
-		return switch( e ) {
-		#end
-		case EConst(_), EIdent(_), EBreak, EContinue: #if hscriptPos e.e #else e #end;
+		var edef = switch( expr(e) ) {
+		case EConst(_), EIdent(_), EBreak, EContinue: expr(e);
 		case EVar(n, t, e): EVar(n, t, if( e != null ) f(e) else null);
 		case EParent(e): EParent(f(e));
 		case EBlock(el): EBlock([for( e in el ) f(e)]);
@@ -88,9 +85,24 @@ class Tools {
 		case ETernary(c, e1, e2): ETernary(f(c), f(e1), f(e2));
 		case ESwitch(e, cases, def): ESwitch(f(e), [for( c in cases ) { values : [for( v in c.values ) f(v)], expr : f(c.expr) } ], def == null ? null : f(def));
 		case EMeta(name, args, e): EMeta(name, args == null ? null : [for( a in args ) f(a)], f(e));
+		case ECheckType(e,t): ECheckType(f(e), t);
 		}
+		return mk(edef, e);
+	}
+
+	public static inline function expr( e : Expr ) : ExprDef {
 		#if hscriptPos
-		return { e : edef, pmin : e.pmin, pmax : e.pmax, origin : e.origin, line : e.line };
+		return e.e;
+		#else
+		return e;
+		#end
+	}
+
+	public static inline function mk( e : ExprDef, p : Expr ) {
+		#if hscriptPos
+		return { e : e, pmin : p.pmin, pmax : p.pmax, origin : p.origin, line : p.line };
+		#else
+		return e;
 		#end
 	}
 

release.bat

@@ -1,4 +1,5 @@
 @echo off
+set PATH="C:\Program Files\7-Zip";%PATH%
 rm -rf release
 mkdir release
 cp haxelib.json README.md extraParams.hxml release