Add intention to expand boolean expression

#KT-38597 Fixed

idea/testData/intentions/expandBooleanExpression/.intention

@@ -0,0 +1 @@
+org.jetbrains.kotlin.idea.intentions.ExpandBooleanExpressionIntention

idea/testData/intentions/expandBooleanExpression/binary.kt

@@ -0,0 +1,3 @@
+fun test(i: Int): Boolean {
+    return i == 1 || i == 2<caret> || i == 3
+}

idea/testData/intentions/expandBooleanExpression/binary.kt.after

@@ -0,0 +1,7 @@
+fun test(i: Int): Boolean {
+    return if (i == 1 || i == 2 || i == 3) {
+        true
+    } else {
+        false
+    }
+}

idea/testData/intentions/expandBooleanExpression/call.kt

@@ -0,0 +1,5 @@
+fun test(b: Boolean): Boolean {
+    return <caret>foo(b)
+}
+
+fun foo(b: Boolean) = true

idea/testData/intentions/expandBooleanExpression/call.kt.after

@@ -0,0 +1,9 @@
+fun test(b: Boolean): Boolean {
+    return if (foo(b)) {
+        true
+    } else {
+        false
+    }
+}
+
+fun foo(b: Boolean) = true

idea/testData/intentions/expandBooleanExpression/constant.kt

@@ -0,0 +1,4 @@
+// IS_APPLICABLE: false
+fun test(): Boolean {
+    return true<caret>
+}

idea/testData/intentions/expandBooleanExpression/inArgument.kt

@@ -0,0 +1,6 @@
+// IS_APPLICABLE: false
+fun test(b: Boolean) {
+    foo(b<caret>)
+}
+
+fun foo(b: Boolean) {}

idea/testData/intentions/expandBooleanExpression/inParameter.kt

@@ -0,0 +1,3 @@
+// IS_APPLICABLE: false
+fun test(i: Int, b: Boolean = i == 1<caret>) {
+}

idea/testData/intentions/expandBooleanExpression/inStringTemplate.kt

@@ -0,0 +1,4 @@
+// IS_APPLICABLE: false
+fun test(b: Boolean) {
+    val s = "b is $b<caret>"
+}

idea/testData/intentions/expandBooleanExpression/is.kt

@@ -0,0 +1,3 @@
+fun test(a: Any): Boolean {
+    return a <caret>is String
+}

idea/testData/intentions/expandBooleanExpression/is.kt.after

@@ -0,0 +1,7 @@
+fun test(a: Any): Boolean {
+    return if (a is String) {
+        true
+    } else {
+        false
+    }
+}

idea/testData/intentions/expandBooleanExpression/parenthesized.kt

@@ -0,0 +1,3 @@
+fun test(i: Int): Boolean {
+    return (i == 1 || i == 2<caret> || i == 3)
+}

idea/testData/intentions/expandBooleanExpression/parenthesized.kt.after

@@ -0,0 +1,7 @@
+fun test(i: Int): Boolean {
+    return if ((i == 1 || i == 2 || i == 3)) {
+        true
+    } else {
+        false
+    }
+}

idea/testData/intentions/expandBooleanExpression/postfix.kt

@@ -0,0 +1,3 @@
+fun test(b: Boolean?): Boolean {
+    return <caret>b!!
+}

idea/testData/intentions/expandBooleanExpression/postfix.kt.after

@@ -0,0 +1,7 @@
+fun test(b: Boolean?): Boolean {
+    return if (b!!) {
+        true
+    } else {
+        false
+    }
+}

idea/testData/intentions/expandBooleanExpression/prefix.kt

@@ -0,0 +1,3 @@
+fun test(i: Int): Boolean {
+    return !(i == 1 || i == 2<caret> || i == 3)
+}

idea/testData/intentions/expandBooleanExpression/prefix.kt.after

@@ -0,0 +1,7 @@
+fun test(i: Int): Boolean {
+    return if (!(i == 1 || i == 2 || i == 3)) {
+        true
+    } else {
+        false
+    }
+}

idea/testData/intentions/expandBooleanExpression/qualified.kt

@@ -0,0 +1,7 @@
+fun test(b: Boolean) {
+    val b = Foo().bar()<caret>
+}
+
+class Foo {
+    fun bar() = true
+}

idea/testData/intentions/expandBooleanExpression/qualified.kt.after

@@ -0,0 +1,11 @@
+fun test(b: Boolean) {
+    val b = if (Foo().bar()) {
+        true
+    } else {
+        false
+    }
+}
+
+class Foo {
+    fun bar() = true
+}

idea/testData/intentions/expandBooleanExpression/variable.kt

@@ -0,0 +1,3 @@
+fun test(b: Boolean): Boolean {
+    return b<caret>
+}

idea/testData/intentions/expandBooleanExpression/variable.kt.after

@@ -0,0 +1,7 @@
+fun test(b: Boolean): Boolean {
+    return <caret>if (b) {
+        true
+    } else {
+        false
+    }
+}