Merge pull request #56 from kornilova-l/end-to-end-tests-for-unions

[WIP] End to end tests for unions

Author: kornilova203

bindgen/visitor/TreeVisitor.cpp

@@ -108,7 +108,8 @@ void TreeVisitor::handleUnion(clang::RecordDecl *record, std::string name) {
     std::vector<Field> fields;
 
     for (const clang::FieldDecl *field : record->fields()) {
-        maxSize = std::max(maxSize, astContext->getTypeSize(field->getType()));
+        uint64_t sizeInBytes = astContext->getTypeSize(field->getType()) / 8;
+        maxSize = std::max(maxSize, sizeInBytes);
         std::string fname = field->getNameAsString();
         std::string ftype = handleReservedWords(
             typeTranslator.Translate(field->getType(), &name));

tests/samples/PrivateMembers.scala

@@ -16,7 +16,7 @@ object PrivateMembers {
   type struct_structWithPrivateStruct = native.CStruct1[native.Ptr[struct_structWithPrivateType]]
   type struct_normalStruct = native.CStruct1[native.CInt]
   type struct_privateStructWithTypedef = native.CStruct1[native.Ptr[__private_type]]
-  type union___unionWithPrivateName = native.CArray[Byte, native.Nat.Digit[native.Nat._3, native.Nat._2]]
+  type union___unionWithPrivateName = native.CArray[Byte, native.Nat._4]
   def getTypeThatUsesPrivateTypes(): pid_t = native.extern
   def getPrivateType(): native.Ptr[__private_type] = native.extern
   def usesPrivateUnion(anonymous0: union___unionWithPrivateName): Unit = native.extern

tests/samples/ReservedWords.scala

@@ -15,7 +15,7 @@ object ReservedWords {
   type `finally` = struct_finally
   type struct_object = native.CStruct2[`match`, native.CInt]
   type struct_finally = native.CStruct2[`def`, `lazy`]
-  type union_lazy = native.CArray[Byte, native.Nat.Digit[native.Nat._1, native.Nat.Digit[native.Nat._2, native.Nat._8]]]
+  type union_lazy = native.CArray[Byte, native.Nat.Digit[native.Nat._1, native.Nat._6]]
   def `with`(`sealed`: `match`, `implicit`: native.Ptr[`match`], `forSome`: `lazy`): `type` = native.extern
   def `implicit`(`type`: native.Ptr[`finally`]): `match` = native.extern
   def _1(): Unit = native.extern

tests/samples/Union.c

@@ -0,0 +1,6 @@
+#include "Union.h"
+#include <stdlib.h>
+
+void setIntValue(union values *v) { v->i = 10; }
+
+void setLongValue(union values *v) { v->l = 10000000000; }

tests/samples/Union.h

@@ -1,5 +1,9 @@
-union point {
-    long a;
-    int b;
-    long long c;
+union values {
+    long l;
+    int i;
+    long long ll;
 };
+
+void setIntValue(union values *v);
+
+void setLongValue(union values *v);

tests/samples/Union.scala

@@ -6,19 +6,21 @@ import scala.scalanative.native._
 @native.link("bindgentests")
 @native.extern
 object Union {
-  type union_point = native.CArray[Byte, native.Nat.Digit[native.Nat._6, native.Nat._4]]
+  type union_values = native.CArray[Byte, native.Nat._8]
+  def setIntValue(v: native.Ptr[union_values]): Unit = native.extern
+  def setLongValue(v: native.Ptr[union_values]): Unit = native.extern
 }
 
 import Union._
 
 object UnionHelpers {
 
-  implicit class union_point_pos(val p: native.Ptr[union_point]) extends AnyVal {
-    def a: native.Ptr[native.CLong] = p.cast[native.Ptr[native.CLong]]
-    def a_=(value: native.CLong): Unit = !p.cast[native.Ptr[native.CLong]] = value
-    def b: native.Ptr[native.CInt] = p.cast[native.Ptr[native.CInt]]
-    def b_=(value: native.CInt): Unit = !p.cast[native.Ptr[native.CInt]] = value
-    def c: native.Ptr[native.CLongLong] = p.cast[native.Ptr[native.CLongLong]]
-    def c_=(value: native.CLongLong): Unit = !p.cast[native.Ptr[native.CLongLong]] = value
+  implicit class union_values_pos(val p: native.Ptr[union_values]) extends AnyVal {
+    def l: native.Ptr[native.CLong] = p.cast[native.Ptr[native.CLong]]
+    def l_=(value: native.CLong): Unit = !p.cast[native.Ptr[native.CLong]] = value
+    def i: native.Ptr[native.CInt] = p.cast[native.Ptr[native.CInt]]
+    def i_=(value: native.CInt): Unit = !p.cast[native.Ptr[native.CInt]] = value
+    def ll: native.Ptr[native.CLongLong] = p.cast[native.Ptr[native.CLongLong]]
+    def ll_=(value: native.CLongLong): Unit = !p.cast[native.Ptr[native.CLongLong]] = value
   }
 }

tests/samples/src/test/scala/org/scalanative/bindgen/samples/UnionTests.scala

@@ -0,0 +1,19 @@
+package org.scalanative.bindgen.samples
+
+import utest._
+import scala.scalanative.native._
+import org.scalanative.bindgen.samples.UnionHelpers._
+
+object UnionTests extends TestSuite {
+  val tests = Tests {
+    'getValues - {
+      Zone {implicit zone =>
+        val structPtr = alloc[Union.union_values]
+        Union.setIntValue(structPtr)
+        assert(!structPtr.i == 10)
+        Union.setLongValue(structPtr)
+        assert(!structPtr.l == 10000000000L)
+      }
+    }
+  }
+}