Bind extended work

2014-11-17 19:46:59 +02:00
parent 1b15534d50
commit 910f8f0d6f
1 changed files with 48 additions and 0 deletions
@@ -0,0 +1,48 @@
+package bindx;
+
+#if macro
+
+import bindx.Error;
+import haxe.macro.Expr;
+
+#end
+class Bindx {
+    
+    @:noUsing macro static public function bindChain(expr:Expr, listener:Expr):Expr {
+        return internalBindChain(expr, listener);
+    }
+    
+    #if macro
+    static function internalBindChain(expr:Expr, listener:Expr):Expr {
+        var prevField = Bind.checkField(expr);
+        var field = prevField;
+        var fields = [];
+        var rest:Expr;
+        while (field != null) {
+            try {
+                field = Bind.tryCheckField(prevField.expr);
+                fields.push(field.field);
+                rest = field.expr;
+            } 
+            catch (e:FatalError) {
+                e.contextFatal();
+            }
+            catch (e:Error) {
+                switch (prevField.expr) {
+                    case EField(e, field):
+                        var classType = Context.typeof(e).follow().getClass();
+                        var field:ClassField = classType.findField(field, null);
+                        fields.push(field);
+                        rest = e;
+                    case EConst(CIdent(_)):
+                        rest = prevField.expr;
+                    case _:
+                        rest = prevField.expr;
+                    }
+            }
+            prevField = field;
+        }
+    }
+    #end
+    
+}