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
+    }
+}

idea/testData/quickfix/createFromUsage/createFunction/call/kt10983.kt

@@ -7,6 +7,7 @@
 // ACTION: Create property 'maximumSizeOfGroup'
 // ACTION: Introduce local variable
 // ACTION: Rename reference
+// ACTION: Expand boolean expression to 'if else'
 // ERROR: A 'return' expression required in a function with a block body ('{...}')
 // ERROR: The expression cannot be a selector (occur after a dot)
 // ERROR: Type inference failed: inline fun <T> Iterable<T>.firstOrNull(predicate: (T) -> Boolean): T?<br>cannot be applied to<br>receiver: Collection<List<String>>  arguments: ((List<String>) -> () -> Boolean)<br>

idea/testData/quickfix/makeTypeParameterReified/noTypeParameter.kt

@@ -2,5 +2,6 @@
 // ACTION: Change type arguments to <*>
 // ACTION: Convert to block body
 // ACTION: Introduce local variable
+// ACTION: Expand boolean expression to 'if else'
 // ERROR: Cannot check for instance of erased type: List<Int>
 fun test(a: List<Any>) = a is List<Int><caret>

idea/testData/quickfix/makeTypeParameterReified/noTypeParameter2.kt

@@ -2,5 +2,6 @@
 // ACTION: Change type arguments to <*>
 // ACTION: Convert to block body
 // ACTION: Introduce local variable
+// ACTION: Expand boolean expression to 'if else'
 // ERROR: Cannot check for instance of erased type: List<Int>
 fun <T> test(a: List<Any>) = a is List<Int><caret>

idea/testData/quickfix/nullables/unsafeInfixCall/noComparison.kt

@@ -3,6 +3,7 @@
 // ACTION: Add non-null asserted (!!) call
 // ACTION: Flip '>'
 // ACTION: Replace overloaded operator with function call
+// ACTION: Expand boolean expression to 'if else'
 
 class SafeType {
     operator fun compareTo(other : SafeType) = 0

idea/testData/quickfix/nullables/unsafeInfixCall/unsafeComparisonInCondition.kt

@@ -2,6 +2,7 @@
 // ACTION: Add non-null asserted (!!) call
 // ACTION: Flip '<'
 // ACTION: Replace overloaded operator with function call
+// ACTION: Expand boolean expression to 'if else'
 // ERROR: Operator call corresponds to a dot-qualified call 'w?.x.compareTo(42)' which is not allowed on a nullable receiver 'w?.x'.
 
 class Wrapper(val x: Int)

idea/testData/quickfix/nullables/unsafeInfixCall/unsafeComparisonInLogic.kt

@@ -4,6 +4,7 @@
 // ACTION: Replace '&&' with '||'
 // ACTION: Replace overloaded operator with function call
 // ACTION: Simplify boolean expression
+// ACTION: Expand boolean expression to 'if else'
 // ERROR: Operator call corresponds to a dot-qualified call 'w?.x.compareTo(42)' which is not allowed on a nullable receiver 'w?.x'.
 
 class Wrapper(val x: Int)

idea/testData/quickfix/nullables/unsafeInfixCall/unsafeComparisonInWhen.kt

@@ -3,6 +3,7 @@
 // ACTION: Flip '<='
 // ACTION: Enable a trailing comma by default in the formatter
 // ACTION: Replace overloaded operator with function call
+// ACTION: Expand boolean expression to 'if else'
 // ERROR: Operator call corresponds to a dot-qualified call 'w?.x.compareTo(42)' which is not allowed on a nullable receiver 'w?.x'.
 
 class Wrapper(val x: Int)

idea/testData/quickfix/nullables/unsafeInfixCall/unsafeComparisonInWhile.kt

@@ -2,6 +2,7 @@
 // ACTION: Add non-null asserted (!!) call
 // ACTION: Flip '>='
 // ACTION: Replace overloaded operator with function call
+// ACTION: Expand boolean expression to 'if else'
 // ERROR: Operator call corresponds to a dot-qualified call 'w?.x.compareTo(42)' which is not allowed on a nullable receiver 'w?.x'.
 
 class Wrapper(val x: Int)

idea/testData/quickfix/typeMismatch/typeMismatchOnReturnedExpression/multiFakeOverrideForOperatorConvention.kt

@@ -1,6 +1,7 @@
 // "Change return type of called function 'AA.contains' to 'Int'" "false"
 // ACTION: Change return type of enclosing function 'AAA.g' to 'Boolean'
 // ACTION: Replace overloaded operator with function call
+// ACTION: Expand boolean expression to 'if else'
 // ERROR: Type mismatch: inferred type is Boolean but Int was expected
 interface A {
     operator fun contains(i: Int): Boolean