(import) and (using) for pure-kiss classes

kiss/src/kiss/Kiss.hx

@@ -16,6 +16,7 @@ import kiss.SpecialForms;
 import kiss.Macros;
 import kiss.KissError;
 import kiss.cloner.Cloner;
+import tink.syntaxhub.*;
 
 using kiss.Kiss;
 using kiss.Helpers;
@@ -68,11 +69,11 @@ typedef KissState = {
 
 class Kiss {
     #if macro
-    public static function defaultKissState(?name):KissState {
-        var className = if(name == null){
+    public static function defaultKissState(?context:FrontendContext):KissState {
+        var className = if (context == null) {
             Context.getLocalClass().get().name;
-        }else{
-            name;
+        } else {
+            context.name;
         }
         var k = {
             className: className,
@@ -192,7 +193,7 @@ class Kiss {
         };
 
         FieldForms.addBuiltins(k);
-        k.specialForms = SpecialForms.builtins(k);
+        k.specialForms = SpecialForms.builtins(k, context);
         k.macros = Macros.builtins(k);
 
         return k;
@@ -276,7 +277,7 @@ class Kiss {
     /**
         Build macro: add fields to a class from a corresponding .kiss file
     **/
-    public static function build(?kissFile:String, ?k:KissState, useClassFields = true, ?className:String):Array<Field> {
+    public static function build(?kissFile:String, ?k:KissState, useClassFields = true, ?context:FrontendContext):Array<Field> {
 
         var classPath = Context.getPosInfos(Context.currentPos()).file;
         // (load... ) relative to the original file
@@ -292,7 +293,7 @@ class Kiss {
                 trace(kissFile);
             #end
                 if (k == null)
-                    k = defaultKissState(className);
+                    k = defaultKissState(context);
 
                 if (useClassFields) {
                     k.fieldList = Context.getBuildFields();

kiss/src/kiss/KissFrontend.hx

@@ -15,15 +15,18 @@ class KissFrontend implements FrontendPlugin {
 	
 	public function parse(file:String, context:FrontendContext):Void {
 
-		final fields 		= Kiss.build(file,null,false,context.name);
-		var pos 				= Context.makePosition({ file: file, min: 0, max: 999 });
-		#if debug trace(context.name); #end 
-		final type 			= context.getType();
-											context.addImport('kiss.Prelude',INormal,pos);
-		for (field in fields){
+		final fields = Kiss.build(file,null,false,context);
+		#if debug
+			trace(context.name);
+		#end 
+		final type = context.getType();
+		var pos = Context.makePosition({ file: file, min: 0, max: 0 });
+		context.addImport('kiss.Prelude',INormal,pos);
+		for (field in fields) {
 			type.fields.push(field);
 		}
 	}
+
 	static function use()
 		tink.SyntaxHub.frontends.whenever(new KissFrontend());
 }

kiss/src/kiss/SpecialForms.hx

@@ -13,12 +13,13 @@ using kiss.Helpers;
 using kiss.Prelude;
 using kiss.Kiss;
 using tink.MacroApi;
+import tink.syntaxhub.*;
 
 // Special forms convert Kiss reader expressions into Haxe macro expressions
 typedef SpecialFormFunction = (wholeExp:ReaderExp, args:Array<ReaderExp>, k:KissState) -> Expr;
 
 class SpecialForms {
-    public static function builtins(k:KissState) {
+    public static function builtins(k:KissState, ?context:FrontendContext) {
         var map:Map<String, SpecialFormFunction> = [];
 
         function renameAndDeprecate(oldName:String, newName:String) {
@@ -537,6 +538,48 @@ class SpecialForms {
             return e;
         };
 
+        function requireContext(exp, formName) {
+            if (context == null) {
+                throw KissError.fromExp(exp, '$formName cannot be used when calling Kiss as a build macro in a Haxe file.');
+            }
+        }
+
+        function none(exp) {
+            return EBlock([]).withMacroPosOf(exp);
+        }
+
+		k.doc("import", 1, null, "(import <types...>)");
+        map["import"] = (wholeExp:ReaderExp, exps:Array<ReaderExp>, k:KissState) -> {
+            requireContext(wholeExp, "import");
+            for (type in exps) {
+                context.addImport(Reader.toString(type.def), INormal, wholeExp.macroPos());
+            }
+            return none(wholeExp);
+        };
+
+        k.doc("importAs", 2, 2, "(importAs <Type> <Alias>)");
+        map["importAs"] = (wholeExp:ReaderExp, exps:Array<ReaderExp>, k:KissState) -> {
+            requireContext(wholeExp, "importAs");
+            context.addImport(Reader.toString(exps[0].def), IAsName(Reader.toString(exps[1].def)), wholeExp.macroPos());
+            return none(wholeExp);
+        };
+
+        k.doc("importAll", 1, 1, "(importAll <package>)");
+        map["importAll"] = (wholeExp:ReaderExp, exps:Array<ReaderExp>, k:KissState) -> {
+            requireContext(wholeExp, "importAll");
+            context.addImport(Reader.toString(exps[0].def), IAll, wholeExp.macroPos());
+            return none(wholeExp);
+        };
+        
+        k.doc("using", 1, null, "(using <Types...>)");
+        map["using"] = (wholeExp:ReaderExp, exps:Array<ReaderExp>, k:KissState) -> {
+            requireContext(wholeExp, "using");
+            for (type in exps) {
+                context.addUsing(Reader.toString(type.def), wholeExp.macroPos());
+            }
+            return none(wholeExp);
+        };
+
         return map;
     }
     

kiss/src/test/OtherPureKissClass.kiss

@@ -0,0 +1,3 @@
+(function extensionMethod [:String s] "EXTENDED")
+
+(defNew [&prop :Int num])

kiss/src/test/PureKissClass.kiss

@@ -0,0 +1,9 @@
+(import test.OtherPureKissClass)
+(importAs test.OtherPureKissClass Alias)
+(using test.OtherPureKissClass)
+
+(function test []
+    (assert (= (.extensionMethod "string") "EXTENDED"))
+    (let [instance (new OtherPureKissClass 5)
+            other (new Alias 5)]
+        (assert (= instance.num other.num 5))))

kiss/src/test/cases/BasicTestCase.hx

@@ -364,9 +364,17 @@ class BasicTestCase extends Test {
         _testQuickFractions();
     }
     
-     function testWhenLetGuards() {
+    function testWhenLetGuards() {
         _testWhenLetGuards();
-     }
+    }
+     
+    function testImportAndUsingInBuildMacro() {
+        _testImportAndUsingInBuildMacro();
+    }
+     
+    function testPureKissClasses() {
+        _testPureKissClasses();
+    }
      
 }
 

kiss/src/test/cases/BasicTestCase.kiss

@@ -694,3 +694,14 @@ From:[(assert false (+ \"false \" \"should \" \"have \" \"been \" \"true\"))]" m
     // Guards should be allowed in whenLet patterns
     (whenLet [(when true 5) 5]
         (Assert.pass)))
+
+(function _testImportAndUsingInBuildMacro []
+    (assertThrowsAtCompileTime (import pack.Type))
+    (assertThrowsAtCompileTime (importAs pack.Type Alias))
+    (assertThrowsAtCompileTime (importAll pack))
+    (assertThrowsAtCompileTime (using pack.Type))
+    (Assert.pass))
+
+(function _testPureKissClasses []
+    (PureKissClass.test)
+    (Assert.pass))