Create from usage: Support generation of Java methods from usages in Kotlin code

idea/testData/quickfix/createFromUsage/createFunction/call/extensionFunOnGroovyType.after.kt

@@ -0,0 +1,10 @@
+// "Create extension function 'foo'" "true"
+// ERROR: Unresolved reference: foo
+
+fun test(): Int {
+    return A().foo()
+}
+
+fun A.foo(): Int {
+    throw UnsupportedOperationException("not implemented") //To change body of created functions use File | Settings | File Templates.
+}

idea/testData/quickfix/createFromUsage/createFunction/call/extensionFunOnGroovyType.before.Main.kt

@@ -0,0 +1,6 @@
+// "Create extension function 'foo'" "true"
+// ERROR: Unresolved reference: foo
+
+fun test(): Int {
+    return A().<caret>foo()
+}

idea/testData/quickfix/createFromUsage/createFunction/call/extensionFunOnGroovyType.before.data.Sample.groovy

@@ -0,0 +1,3 @@
+class A {
+
+}

idea/testData/quickfix/createFromUsage/createFunction/call/extensionFunOnJavaType.after.kt

@@ -0,0 +1,10 @@
+// "Create extension function 'foo'" "true"
+// ERROR: Unresolved reference: foo
+
+fun test(): Int? {
+    return A().foo(1, "2")
+}
+
+fun A.foo(i: Int, s: String): Int? {
+    throw UnsupportedOperationException("not implemented") //To change body of created functions use File | Settings | File Templates.
+}

idea/testData/quickfix/createFromUsage/createFunction/call/extensionFunOnJavaType.before.Main.kt

@@ -0,0 +1,6 @@
+// "Create extension function 'foo'" "true"
+// ERROR: Unresolved reference: foo
+
+fun test(): Int? {
+    return A().<caret>foo(1, "2")
+}

idea/testData/quickfix/createFromUsage/createFunction/call/extensionFunOnJavaType.before.data.Sample.java

@@ -0,0 +1,3 @@
+class A {
+
+}

idea/testData/quickfix/createFromUsage/createFunction/call/funOnGroovyType.before.Main.kt

@@ -0,0 +1,8 @@
+// "Create function 'foo'" "false"
+// ACTION: Convert to expression body
+// ACTION: Create extension function 'foo'
+// ERROR: Unresolved reference: foo
+
+fun test(): Int {
+    return A().<caret>foo()
+}

idea/testData/quickfix/createFromUsage/createFunction/call/funOnGroovyType.before.data.Sample.groovy

@@ -0,0 +1,3 @@
+class A {
+
+}

idea/testData/quickfix/createFromUsage/createFunction/call/funOnJavaInterface.after.data.Sample.java

@@ -0,0 +1,7 @@
+import org.jetbrains.annotations.Nullable;
+
+interface A {
+
+    @Nullable
+    <T, U> U foo(U u, T t);
+}

idea/testData/quickfix/createFromUsage/createFunction/call/funOnJavaInterface.after.kt

@@ -0,0 +1,7 @@
+// "Create function 'foo'" "true"
+// ERROR: Unresolved reference: foo
+
+fun test(a: A): Int? {
+    return a.foo<String, Int>(1, "2")
+}
+

idea/testData/quickfix/createFromUsage/createFunction/call/funOnJavaInterface.before.Main.kt

@@ -0,0 +1,6 @@
+// "Create function 'foo'" "true"
+// ERROR: Unresolved reference: foo
+
+fun test(a: A): Int? {
+    return a.<caret>foo<String, Int>(1, "2")
+}

idea/testData/quickfix/createFromUsage/createFunction/call/funOnJavaInterface.before.data.Sample.java

@@ -0,0 +1,3 @@
+interface A {
+
+}

idea/testData/quickfix/createFromUsage/createFunction/call/funOnJavaType.after.data.Sample.java

@@ -0,0 +1,10 @@
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+class A {
+
+    @Nullable
+    public Integer foo(int i, @NotNull String s) {
+        return null;
+    }
+}

idea/testData/quickfix/createFromUsage/createFunction/call/funOnJavaType.after.kt

@@ -1,10 +1,7 @@
-// "Create extension function 'foo'" "true"
+// "Create function 'foo'" "true"
 // ERROR: Unresolved reference: foo
 
-fun test(): Int {
+fun test(): Int? {
     return A().foo(1, "2")
 }
 
-fun A.foo(i: Int, s: String): Int {
-    throw UnsupportedOperationException("not implemented") //To change body of created functions use File | Settings | File Templates.
-}

idea/testData/quickfix/createFromUsage/createFunction/call/funOnJavaType.before.Main.kt

@@ -1,6 +1,6 @@
-// "Create extension function 'foo'" "true"
+// "Create function 'foo'" "true"
 // ERROR: Unresolved reference: foo
 
-fun test(): Int {
+fun test(): Int? {
     return A().<caret>foo(1, "2")
 }

idea/testData/quickfix/createFromUsage/createFunction/call/genericFunOnJavaType.after.data.Sample.java

@@ -0,0 +1,6 @@
+class A {
+
+    public <T, U> U foo(U u, T t) {
+        return null;
+    }
+}

idea/testData/quickfix/createFromUsage/createFunction/call/genericFunOnJavaType.after.kt

@@ -0,0 +1,7 @@
+// "Create function 'foo'" "true"
+// ERROR: Unresolved reference: foo
+
+fun test(): Int {
+    return A().foo<String, Int>(1, "2")
+}
+

idea/testData/quickfix/createFromUsage/createFunction/call/genericFunOnJavaType.before.Main.kt

@@ -0,0 +1,6 @@
+// "Create function 'foo'" "true"
+// ERROR: Unresolved reference: foo
+
+fun test(): Int {
+    return A().<caret>foo<String, Int>(1, "2")
+}

idea/testData/quickfix/createFromUsage/createFunction/call/genericFunOnJavaType.before.data.Sample.java

@@ -0,0 +1,3 @@
+class A {
+
+}