Move private fields into constructor

Private fields that are accessed only from the constructor,
and are accessed only after they are properly initialized are now
moved into the constructor. This avoids creating a redundant objetc field.
Good example: gcd in Rationals (see constrs.scala).

1 files changed, 33 insertions, 0 deletions

diff --git a/tests/pos/constrs.scala b/tests/pos/constrs.scala
new file mode 100644
index 000000000..dc0e1a369
--- /dev/null
+++ b/tests/pos/constrs.scala
@@ -0,0 +1,33 @@
+class Foo(x: Int, var y: Int) {
+
+  val z: Int = 0
+
+  var u: Int = _
+
+  def f = x
+
+}
+
+class Baz(val base: Int) {
+
+}
+
+
+class Bar(base: Int, byName: => String, local: Int) extends Baz(base + local) {
+
+  def f() = println(base.toString + byName)
+
+}
+
+class Rational(n: Int, d: Int) {
+  def gcd(x: Int, y: Int): Int = ???
+  private val x = gcd(n, d)
+  def numer = n / x
+  def denom = d / x
+}
+class Rational2(n: Int, d: Int) {
+  def gcd(x: Int, y: Int): Int = ???
+  private val x = gcd(n, d)
+  val numer = n / x
+  val denom = d / x
+}