Fix promoted argument types not being recorded

Author: thekid

ChangeLog.md

@@ -3,6 +3,10 @@ XP Compiler ChangeLog
 
 ## ?.?.? / ????-??-??
 
+## 0.9.1 / 2017-10-21
+
+* Fixed promoted argument types not being recorded - @thekid
+
 ## 0.9.0 / 2017-10-21
 
 * Added support for `$arg ==> $arg++` lambdas without argument braces

src/main/php/lang/ast/Emitter.class.php

@@ -392,7 +392,7 @@ protected function emitMethod($node) {
     $declare= $promote= $params= '';
     foreach ($node->value[2][0] as $param) {
       if (isset($param[4])) {
-        $declare= $param[4].' $'.$param[0].';';
+        $declare.= $param[4].' $'.$param[0].';';
         $promote.= '$this->'.$param[0].'= $'.$param[0].';';
         $this->meta[0][self::PROPERTY][$param[0]]= [
           DETAIL_RETURNS     => $param[2] ? $param[2]->name() : 'var',

src/test/php/lang/ast/unittest/emit/ArgumentPromotionTest.class.php

@@ -57,9 +57,12 @@ public function run() {
   #[@test]
   public function type_information() {
     $t= $this->type('class <T> {
-      public function __construct(private int $id) {
+      public function __construct(private int $id, private string $name) {
       }
     }');
-    $this->assertEquals(Primitive::$INT, $t->getField('id')->getType());
+    $this->assertEquals(
+      [Primitive::$INT, Primitive::$STRING],
+      [$t->getField('id')->getType(), $t->getField('name')->getType()]
+    );
   }
 }