less red-code-inducing handling of nullability with array accesses

src/org/jetbrains/jet/j2k/ast/Expressions.kt

@@ -3,8 +3,9 @@ package org.jetbrains.jet.j2k.ast
 import org.jetbrains.jet.j2k.ast.types.Type
 
 public open class ArrayAccessExpression(val expression : Expression, val index : Expression) : Expression() {
-    override fun toKotlin() = expression.toKotlin() + "[" + index.toKotlin() + "]"
-    override fun isNullable() = expression.isNullable()
+    override fun toKotlin() = expression.toKotlin() +
+        (if (expression.isNullable()) "!!" else "") +
+        "[" + index.toKotlin() + "]"
 }
 
 public open class AssignmentExpression(val left : Expression, val right : Expression, val op : String) : Expression() {

tests/testData/ast/for/statement/forRangeWithLE.kt

@@ -1,4 +1,4 @@
 var array : IntArray? = IntArray(10)
 for (i in 0..10) {
-array[i] = i
+array!![i] = i
 }

tests/testData/ast/for/statement/forRangeWithLT.kt

@@ -1,4 +1,4 @@
 var array : IntArray? = IntArray(10)
 for (i in 0..10 - 1) {
-array[i] = i
+array!![i] = i
 }

tests/testData/ast/for/statement/forWithBlock.kt

@@ -1,4 +1,4 @@
 var array : IntArray? = IntArray(10)
 for (i in 0..10 - 1) {
-array[i] = i
+array!![i] = i
 }