Add platformStatic annotation to main method from java

#KT-8219 Fixed

idea/testData/copyPaste/conversion/FileWithNoPackageStatement.expected.kt

@@ -1,7 +1,9 @@
 package to
 
+import kotlin.platform.platformStatic
+
 public object JavaClass {
-    public fun main(args: Array<String>) {
+    platformStatic public fun main(args: Array<String>) {
         println("Hello, world!")
     }
-}
+}

j2k/src/org/jetbrains/kotlin/j2k/Converter.kt

@@ -148,17 +148,7 @@ class Converter private constructor(
 
     private fun convertFile(javaFile: PsiJavaFile): File {
         var convertedChildren = javaFile.getChildren().map { convertTopElement(it) }.filterNotNull()
-        return File(convertedChildren, createMainFunction(javaFile)).assignPrototype(javaFile)
-    }
-
-    private fun createMainFunction(file: PsiJavaFile): String? {
-        for (`class` in file.getClasses()) {
-            val mainMethod = PsiMethodUtil.findMainMethod(`class`)
-            if (mainMethod != null) {
-                return "fun main(args: Array<String>) = ${`class`.getName()}.${mainMethod.getName()}(args)"
-            }
-        }
-        return null
+        return File(convertedChildren).assignPrototype(javaFile)
     }
 
     public fun convertAnnotations(owner: PsiModifierListOwner): Annotations
@@ -428,6 +418,17 @@ class Converter private constructor(
 
         if (function == null) return null
 
+        if (PsiMethodUtil.isMainMethod(method)) {
+            val fqName = FqName("kotlin.platform.platformStatic")
+            val identifier = Identifier(fqName.shortName().identifier, imports = listOf(fqName)).assignNoPrototype()
+
+            function.annotations += Annotations(
+                    listOf(Annotation(identifier,
+                                      listOf(),
+                                      withAt = false,
+                                      newLineAfter = false).assignNoPrototype())).assignNoPrototype()
+        }
+
         if (function.parameterList.parameters.any { it.defaultValue != null } && !function.modifiers.isPrivate) {
             function.annotations += Annotations(
                     listOf(Annotation(Identifier("jvmOverloads").assignNoPrototype(),

j2k/src/org/jetbrains/kotlin/j2k/ast/File.kt

@@ -25,11 +25,8 @@ class PackageStatement(val packageName: String) : Element() {
     }
 }
 
-class File(val elements: List<Element>, val mainFunction: String?) : Element() {
+class File(val elements: List<Element>) : Element() {
     override fun generateCode(builder: CodeBuilder) {
         builder.append(elements, "\n")
-        if (mainFunction != null) {
-            builder append "\n\n" append mainFunction
-        }
     }
 }

j2k/testData/fileOrElement/classExpression/primitivesAndArrays.kt

@@ -1,5 +1,7 @@
+import kotlin.platform.platformStatic
+
 public object A {
-    public fun main(args: Array<String>) {
+    platformStatic public fun main(args: Array<String>) {
         println(Void.TYPE)
         println(Integer.TYPE)
         println(java.lang.Double.TYPE)
@@ -8,5 +10,3 @@ public object A {
         println(javaClass<Array<Array<Any>>>())
     }
 }
-
-fun main(args: Array<String>) = A.main(args)

j2k/testData/fileOrElement/for/withContinue1.kt

@@ -1,5 +1,7 @@
+import kotlin.platform.platformStatic
+
 public object TestClass {
-    public fun main(args: Array<String>) {
+    platformStatic public fun main(args: Array<String>) {
         var i = 0
         while (i < 10) {
             if (i == 4 || i == 8) {
@@ -11,6 +13,4 @@ public object TestClass {
             ++i
         }
     }
-}
-
-fun main(args: Array<String>) = TestClass.main(args)
+}

j2k/testData/fileOrElement/for/withContinue2.kt

@@ -1,5 +1,7 @@
+import kotlin.platform.platformStatic
+
 public object TestClass {
-    public fun main(args: Array<String>) {
+    platformStatic public fun main(args: Array<String>) {
         var i = 0
         var j = 1
         while (i < 10) {
@@ -14,6 +16,4 @@ public object TestClass {
             j *= 2
         }
     }
-}
-
-fun main(args: Array<String>) = TestClass.main(args)
+}

j2k/testData/fileOrElement/for/withContinue3.kt

@@ -1,5 +1,7 @@
+import kotlin.platform.platformStatic
+
 public object TestClass {
-    public fun main(args: Array<String>) {
+    platformStatic public fun main(args: Array<String>) {
         var i = 1
         while (i < 1000) {
             if (i == 4 || i == 8) {
@@ -10,6 +12,4 @@ public object TestClass {
             i *= 2
         }
     }
-}
-
-fun main(args: Array<String>) = TestClass.main(args)
+}

j2k/testData/fileOrElement/for/withContinueAndLabels.kt

@@ -1,5 +1,7 @@
+import kotlin.platform.platformStatic
+
 public object TestClass {
-    public fun main(args: Array<String>) {
+    platformStatic public fun main(args: Array<String>) {
         var i = 1
         OuterLoop1@ OuterLoop2@ while (i < 1000) {
             var j = 1
@@ -22,6 +24,4 @@ public object TestClass {
             i *= 2
         }
     }
-}
-
-fun main(args: Array<String>) = TestClass.main(args)
+}

j2k/testData/fileOrElement/function/main.kt

@@ -1,2 +1,5 @@
-public fun main(args: Array<String>) {
+import kotlin.platform.platformStatic
+
+
+platformStatic public fun main(args: Array<String>) {
 }

j2k/testData/fileOrElement/function/main2.kt

@@ -1,6 +1,6 @@
-public object A {
-    public fun main(args: Array<String>) {
-    }
-}
+import kotlin.platform.platformStatic
 
-fun main(args: Array<String>) = A.main(args)
+public object A {
+    platformStatic public fun main(args: Array<String>) {
+    }
+}

j2k/testData/fileOrElement/function/mainAndNullabilitySetting.kt

@@ -1,7 +1,7 @@
+import kotlin.platform.platformStatic
+
 // !forceNotNullTypes: false
 public object A {
-    public fun main(args: Array<String>) {
+    platformStatic public fun main(args: Array<String>) {
     }
-}
-
-fun main(args: Array<String>) = A.main(args)
+}

j2k/testData/fileOrElement/issues/kt-638.kt

@@ -1,4 +1,6 @@
 // ERROR: Property must be initialized or be abstract
+import kotlin.platform.platformStatic
+
 public class Identifier<T> {
     public val name: T
     private val myHasDollar: Boolean
@@ -21,11 +23,9 @@ public class Identifier<T> {
 }
 
 public object User {
-    public fun main(args: Array<String>) {
+    platformStatic public fun main(args: Array<String>) {
         val i1 = Identifier("name", false, true)
         val i2 = Identifier("name", false)
         val i3 = Identifier("name")
     }
-}
-
-fun main(args: Array<String>) = User.main(args)
+}

j2k/testData/fileOrElement/issues/kt-807.kt

@@ -3,9 +3,10 @@
 // ERROR: Assignments are not expressions, and only expressions are allowed in this context
 // ERROR: Unresolved reference: close
 import java.io.*
+import kotlin.platform.platformStatic
 
 object FileRead {
-    public fun main(args: Array<String>) {
+    platformStatic public fun main(args: Array<String>) {
         try {
             val fstream = FileInputStream()
             val `in` = DataInputStream(fstream)
@@ -20,6 +21,4 @@ object FileRead {
         }
 
     }
-}
-
-fun main(args: Array<String>) = FileRead.main(args)
+}

j2k/testData/fileOrElement/issues/kt-871.kt

@@ -1,9 +1,9 @@
 package demo
 
+import kotlin.platform.platformStatic
+
 object Program {
-    public fun main(args: Array<String>) {
+    platformStatic public fun main(args: Array<String>) {
         println("Halo!")
     }
-}
-
-fun main(args: Array<String>) = Program.main(args)
+}

j2k/testData/fileOrElement/switch/comlicatedFallDown.kt

@@ -1,5 +1,7 @@
 package demo
 
+import kotlin.platform.platformStatic
+
 public object SwitchDemo {
     public fun print(o: Any) {
         println(o)
@@ -76,10 +78,8 @@ public object SwitchDemo {
         println(monthString)
     }
 
-    public fun main(args: Array<String>) {
+    platformStatic public fun main(args: Array<String>) {
         for (i in 1..12)
             test(i)
     }
-}
-
-fun main(args: Array<String>) = SwitchDemo.main(args)
+}

j2k/testData/fileOrElement/switch/emptySwitch.kt

@@ -1,5 +1,7 @@
+import kotlin.platform.platformStatic
+
 public object NonDefault {
-    public fun main(args: Array<String>) {
+    platformStatic public fun main(args: Array<String>) {
 
         val value = 3
         val valueString = ""
@@ -8,6 +10,4 @@ public object NonDefault {
         }
         println(valueString)
     }
-}
-
-fun main(args: Array<String>) = NonDefault.main(args)
+}

j2k/testData/fileOrElement/switch/fallDown.kt

@@ -1,7 +1,9 @@
 package switch_demo
 
+import kotlin.platform.platformStatic
+
 public object SwitchDemo {
-    public fun main(args: Array<String>) {
+    platformStatic public fun main(args: Array<String>) {
         val month = 8
         val monthString: String
         when (month) {
@@ -10,6 +12,4 @@ public object SwitchDemo {
         }
         println(monthString)
     }
-}
-
-fun main(args: Array<String>) = SwitchDemo.main(args)
+}

j2k/testData/fileOrElement/switch/fallDownWithBlocks.kt

@@ -1,5 +1,7 @@
+import kotlin.platform.platformStatic
+
 public object C {
-    public fun main(args: Array<String>) {
+    platformStatic public fun main(args: Array<String>) {
         when (args.size()) {
             1 -> {
                 run {
@@ -18,6 +20,4 @@ public object C {
             }
         }
     }
-}
-
-fun main(args: Array<String>) = C.main(args)
+}

j2k/testData/fileOrElement/switch/kt-539.kt

@@ -1,7 +1,9 @@
 package switch_demo
 
+import kotlin.platform.platformStatic
+
 public object SwitchDemo {
-    public fun main(args: Array<String>) {
+    platformStatic public fun main(args: Array<String>) {
 
         val month = 8
         val monthString: String
@@ -22,6 +24,4 @@ public object SwitchDemo {
         }
         println(monthString)
     }
-}
-
-fun main(args: Array<String>) = SwitchDemo.main(args)
+}

j2k/testData/fileOrElement/switch/nondefault.kt

@@ -1,5 +1,7 @@
+import kotlin.platform.platformStatic
+
 public object NonDefault {
-    public fun main(args: Array<String>) {
+    platformStatic public fun main(args: Array<String>) {
 
         val value = 3
         var valueString = ""
@@ -10,6 +12,4 @@ public object NonDefault {
         }
         println(valueString)
     }
-}
-
-fun main(args: Array<String>) = NonDefault.main(args)
+}