Intentions: Move class member to companion object

#KT-9697 In Progress

idea/testData/intentions/moveToCompanion/.intention

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+org.jetbrains.kotlin.idea.intentions.MoveMemberToCompanionObjectIntention

idea/testData/intentions/moveToCompanion/abstractFunction.kt

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+// IS_APPLICABLE: false
+
+abstract class A {
+    abstract fun <caret>foo()
+}

idea/testData/intentions/moveToCompanion/abstractProperty.kt

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+// IS_APPLICABLE: false
+
+abstract class A {
+    abstract val <caret>foo: Int
+}

idea/testData/intentions/moveToCompanion/dropFinal.kt

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+class A {
+    final fun <caret>foo() {
+
+    }
+}

idea/testData/intentions/moveToCompanion/dropFinal.kt.after

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+class A {
+    companion object {
+        fun foo() {
+
+        }
+    }
+}

idea/testData/intentions/moveToCompanion/dropOpen.kt

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+open class A {
+    open fun <caret>foo() {
+
+    }
+}

idea/testData/intentions/moveToCompanion/dropOpen.kt.after

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+open class A {
+    companion object {
+        fun foo() {
+
+        }
+    }
+}

idea/testData/intentions/moveToCompanion/enumEntry.kt

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+// IS_APPLICABLE: false
+
+enum class E {
+    A,
+    <caret>B,
+    C
+}

idea/testData/intentions/moveToCompanion/functionWithOverride.kt

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+// IS_APPLICABLE: false
+
+interface A {
+    fun foo()
+}
+
+class B: A {
+    override fun <caret>foo() {
+
+    }
+}

idea/testData/intentions/moveToCompanion/functionWithoutBody.kt

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+// IS_APPLICABLE: false
+
+interface A {
+    fun <caret>foo()
+}

idea/testData/intentions/moveToCompanion/inInnerClass.kt

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+// IS_APPLICABLE: false
+
+class A {
+    inner class B {
+        fun <caret>foo() {
+
+        }
+    }
+}

idea/testData/intentions/moveToCompanion/inLocalClass.kt

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+// IS_APPLICABLE: false
+
+fun foo() {
+    class A {
+        fun <caret>bar() {
+
+        }
+    }
+}

idea/testData/intentions/moveToCompanion/inObject.kt

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+// IS_APPLICABLE: false
+
+object A {
+    fun <caret>foo() {
+
+    }
+}

idea/testData/intentions/moveToCompanion/localFunction.kt

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+// IS_APPLICABLE: false
+
+fun foo() {
+    fun <caret>bar() {
+
+    }
+}

idea/testData/intentions/moveToCompanion/overriddenFunction.kt

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+// SHOULD_FAIL_WITH: Function <b><code>foo</code></b> is overridden by declaration(s) in a subclass
+open class A {
+    open fun <caret>foo() {
+
+    }
+}
+
+class B: A() {
+    override fun foo() {
+
+    }
+}

idea/testData/intentions/moveToCompanion/overriddenProperty.kt

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+// SHOULD_FAIL_WITH: Property <b><code>foo</code></b> is overridden by declaration(s) in a subclass
+open class A {
+    open val <caret>foo: Int = 1
+}
+
+class B: A() {
+    override val foo: Int = 2
+}

idea/testData/intentions/moveToCompanion/propertyUsingClassInstance.kt

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+// SHOULD_FAIL_WITH: Usages of outer class instance inside of property 'y' won't be processed
+class A {
+    val x = 1
+    val <caret>y = x + 1
+}

idea/testData/intentions/moveToCompanion/propertyWithOverride.kt

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+// IS_APPLICABLE: false
+
+interface A {
+    val foo: Int
+}
+
+class B: A {
+    override val <caret>foo: Int = 1
+}

idea/testData/intentions/moveToCompanion/topLevelFunction.kt

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+// IS_APPLICABLE: false
+
+fun <caret>foo() {
+
+}