Script refactoring, codegen tests: change test data according to semantics change

Add some new tests for uncovered cases

compiler/testData/codegen/script/adder.kts

@@ -0,0 +1,5 @@
+var x = 0
+x++
+x++
+x++
+// expected: x: 3

compiler/testData/codegen/script/empty.kts

@@ -1,2 +1 @@
-
-// expected: rv: null
+// expected: rv: <nofield>

compiler/testData/codegen/script/helloWorld.kts

@@ -1,2 +1,2 @@
-// expected: rv: null
-System.out!!.println("hello world")
+// expected: rv: <nofield>
+System.out!!.println("hello world")

compiler/testData/codegen/script/inline.kts

@@ -11,4 +11,4 @@ fun main(): Int {
     return foo { x -> bar(x) }
 }
 
-main()
+val rv = main()

compiler/testData/codegen/script/outerCapture.kts

@@ -11,4 +11,4 @@ fun main(): Int {
     return foo { x -> bar(x) }
 }
 
-main()
+val rv = main()

compiler/testData/codegen/script/parameter.kts

@@ -2,4 +2,4 @@
 // param: what: kotlin.String: sky
 // param: color: kotlin.String: blue
 
-"$what color is $color"
+val rv = "$what color is $color"

compiler/testData/codegen/script/parameterArray.kts

@@ -1,4 +1,4 @@
 // param: args: kotlin.Array<kotlin.String>: three little words
 // expected: rv: little
 
-args[1]
+val rv = args[1]

compiler/testData/codegen/script/parameterClosure.kts

@@ -2,6 +2,6 @@
 
 fun addX(y: Int) = x + y
 
-addX(3)
+val rv = addX(3)
 
 // expected: rv: 13

compiler/testData/codegen/script/parameterLong.kts

@@ -2,4 +2,4 @@
 // param: aa: kotlin.Long: 17
 // param: bb: kotlin.Int: 2
 
-aa + bb
+val rv = aa + bb

compiler/testData/codegen/script/secondLevelFunction.kts

@@ -1,10 +1,10 @@
-val x: Int
+var x: Int = 0
 
 if (true) {
     fun foo(y: Int) = y + 20
     x = foo(9)
 }
 
-x
+val rv = x
 
 // expected: rv: 29

compiler/testData/codegen/script/secondLevelFunctionClosure.kts

@@ -1,11 +1,11 @@
 val z = 30
-val x: Int
+var x: Int = 0
 
 if (true) {
     fun foo() = z + 20
     x = foo()
 }
 
-x
+val rv = x
 
 // expected: rv: 50

compiler/testData/codegen/script/secondLevelVal.kts

@@ -2,7 +2,4 @@ if (true) {
     val archenemy = "Jim Moriarty"
 }
 
-true
-
-// expected: rv: true
 // expected: archenemy: <nofield>

compiler/testData/codegen/script/simpleClass.kts

@@ -2,6 +2,6 @@ class SimpleClass(val s: String) {
     fun foo() = s
 }
 
-SimpleClass("OK").foo()
+val rv = SimpleClass("OK").foo()
 
 // expected: rv: OK

compiler/testData/codegen/script/string.kts

@@ -1,3 +1,3 @@
-"O" + "K"
+val rv = "O" + "K"
 
 // expected: rv: OK

compiler/testData/codegen/script/topLevelFunction.kts

@@ -8,4 +8,4 @@ fun factorial(n: Int): Int {
     return product
 }
 
-factorial(10)
+val rv = factorial(10)

compiler/testData/codegen/script/topLevelFunctionClosure.kts

@@ -2,6 +2,6 @@ val x = 12
 
 fun foo(y: Int) = x + y
 
-foo(33)
+val rv = foo(33)
 
 // expected: rv: 45