Make single-file classes tolerant to having many main()'s

compiler/testData/codegen/boxMultiFile/mainInFiles/1.kt

@@ -0,0 +1,21 @@
+package test
+
+class A {}
+
+fun getMain(className: String): java.lang.reflect.Method {
+    val classLoader = A().javaClass.classLoader
+    return classLoader.loadClass(className).getDeclaredMethod("main", Array<String>::class.java)
+}
+
+fun box(): String {
+    val bMain = getMain("pkg.AKt")
+    val cMain = getMain("pkg.BKt")
+
+    val args = Array(1, { "" })
+
+    bMain.invoke(null, args)
+    cMain.invoke(null, args)
+
+    return args[0]
+}
+

compiler/testData/codegen/boxMultiFile/mainInFiles/a.kt

@@ -0,0 +1,5 @@
+package pkg
+
+fun main(args: Array<String>) {
+    args[0] += "O"
+}

compiler/testData/codegen/boxMultiFile/mainInFiles/b.kt

@@ -0,0 +1,5 @@
+package pkg
+
+fun main(args: Array<String>) {
+    args[0] += "K"
+}

compiler/testData/diagnostics/tests/redeclarations/RedeclarationMainInMultiFile.kt

@@ -0,0 +1,5 @@
+// FILE: a.kt
+fun main(args: Array<String>) {}
+
+// FILE: b.kt
+fun main(args: Array<String>) {}

compiler/testData/diagnostics/tests/redeclarations/RedeclarationMainInMultiFile.txt

@@ -0,0 +1,4 @@
+package
+
+public fun main(/*0*/ args: kotlin.Array<kotlin.String>): kotlin.Unit
+public fun main(/*0*/ args: kotlin.Array<kotlin.String>): kotlin.Unit

compiler/testData/diagnostics/testsWithStdLib/CallToMainRedeclaredInMultiFile.kt

@@ -0,0 +1,8 @@
+// FILE: a.kt
+fun main(args: Array<String>) {}
+
+// FILE: b.kt
+fun main(args: Array<String>) {}
+
+// FILE: c.kt
+fun foo() { <!OVERLOAD_RESOLUTION_AMBIGUITY!>main<!>(arrayOf("a", "b")) }

compiler/testData/diagnostics/testsWithStdLib/CallToMainRedeclaredInMultiFile.txt

@@ -0,0 +1,5 @@
+package
+
+public fun foo(): kotlin.Unit
+public fun main(/*0*/ args: kotlin.Array<kotlin.String>): kotlin.Unit
+public fun main(/*0*/ args: kotlin.Array<kotlin.String>): kotlin.Unit

compiler/testData/diagnostics/testsWithStdLib/RedeclarationMainInMultiFileClass.kt

@@ -0,0 +1,11 @@
+// FILE: a.kt
+@file:JvmName("Util")
+@file:JvmMultifileClass
+
+<!CONFLICTING_JVM_DECLARATIONS!>fun main(args: Array<String>)<!> {}
+
+// FILE: b.kt
+@file:JvmName("Util")
+@file:JvmMultifileClass
+
+<!CONFLICTING_JVM_DECLARATIONS!>fun main(args: Array<String>)<!> {}

compiler/testData/diagnostics/testsWithStdLib/RedeclarationMainInMultiFileClass.txt

@@ -0,0 +1,4 @@
+package
+
+public fun main(/*0*/ args: kotlin.Array<kotlin.String>): kotlin.Unit
+public fun main(/*0*/ args: kotlin.Array<kotlin.String>): kotlin.Unit

compiler/testData/integration/ant/jvm/mainInFiles/a.kt

@@ -0,0 +1,5 @@
+package pkg
+
+fun main(args : Array<String>) {
+    println("A.main Ok")
+}

compiler/testData/integration/ant/jvm/mainInFiles/b.kt

@@ -0,0 +1,5 @@
+package pkg
+
+fun main(args : Array<String>) {
+    println("B.main Ok")
+}

compiler/testData/integration/ant/jvm/mainInFiles/build.log.expected

@@ -0,0 +1,12 @@
+OUT:
+Buildfile: [TestData]/build.xml
+
+build:
+  [kotlinc] Compiling [[TestData]] => [[Temp]/hello.jar]
+     [java] A.main Ok
+     [java] B.main Ok
+
+BUILD SUCCESSFUL
+Total time: [time]
+
+Return code: 0

compiler/testData/integration/ant/jvm/mainInFiles/build.xml

@@ -0,0 +1,23 @@
+<project name="Ant Task Test" default="build">
+    <taskdef resource="org/jetbrains/kotlin/ant/antlib.xml" classpath="${kotlin.lib}/kotlin-ant.jar"/>
+
+    <target name="build">
+        <kotlinc output="${temp}/hello.jar">
+            <src path="${test.data}"/>
+        </kotlinc>
+
+        <java classname="pkg.AKt" fork="true">
+            <classpath>
+                <pathelement location="${temp}/hello.jar"/>
+                <pathelement location="${kotlin.runtime.jar}"/>
+            </classpath>
+        </java>
+
+        <java classname="pkg.BKt" fork="true">
+            <classpath>
+                <pathelement location="${temp}/hello.jar"/>
+                <pathelement location="${kotlin.runtime.jar}"/>
+            </classpath>
+        </java>
+    </target>
+</project>