Unnecessary local variable: highlight with INFORMATION level when initializer has any multi-line blocks (#3359)

#KT-26752 Fixed

idea/testData/inspectionsLocal/unnecessaryVariable/ifElse.kt

@@ -0,0 +1,13 @@
+// HIGHLIGHT: INFORMATION
+fun test(b: Boolean): Int {
+    val <caret>result = if (b) {
+        foo()
+    } else {
+        bar()
+    }
+    return result
+}
+
+fun foo() = 1
+
+fun bar() = 2

idea/testData/inspectionsLocal/unnecessaryVariable/ifElse.kt.after

@@ -0,0 +1,12 @@
+// HIGHLIGHT: INFORMATION
+fun test(b: Boolean): Int {
+    return if (b) {
+        foo()
+    } else {
+        bar()
+    }
+}
+
+fun foo() = 1
+
+fun bar() = 2

idea/testData/inspectionsLocal/unnecessaryVariable/ifElse2.kt

@@ -0,0 +1,9 @@
+// HIGHLIGHT: GENERIC_ERROR_OR_WARNING
+fun test(b: Boolean): Int {
+    val <caret>result = if (b) foo() else bar()
+    return result
+}
+
+fun foo() = 1
+
+fun bar() = 2

idea/testData/inspectionsLocal/unnecessaryVariable/ifElse2.kt.after

@@ -0,0 +1,8 @@
+// HIGHLIGHT: GENERIC_ERROR_OR_WARNING
+fun test(b: Boolean): Int {
+    return if (b) foo() else bar()
+}
+
+fun foo() = 1
+
+fun bar() = 2

idea/testData/inspectionsLocal/unnecessaryVariable/ifElse3.kt

@@ -0,0 +1,12 @@
+// HIGHLIGHT: GENERIC_ERROR_OR_WARNING
+fun test(b: Boolean): Int {
+    val <caret>result = if (b)
+        foo()
+    else
+        bar()
+    return result
+}
+
+fun foo() = 1
+
+fun bar() = 2

idea/testData/inspectionsLocal/unnecessaryVariable/ifElse3.kt.after

@@ -0,0 +1,11 @@
+// HIGHLIGHT: GENERIC_ERROR_OR_WARNING
+fun test(b: Boolean): Int {
+    return if (b)
+        foo()
+    else
+        bar()
+}
+
+fun foo() = 1
+
+fun bar() = 2

idea/testData/inspectionsLocal/unnecessaryVariable/ifElse4.kt

@@ -0,0 +1,14 @@
+// HIGHLIGHT: GENERIC_ERROR_OR_WARNING
+fun test(b: Boolean): Int {
+    val <caret>result = if (b)
+        baz { foo() }
+    else
+        baz { bar() }
+    return result
+}
+
+fun foo() = 1
+
+fun bar() = 2
+
+fun baz(f: () -> Int) = f()

idea/testData/inspectionsLocal/unnecessaryVariable/ifElse4.kt.after

@@ -0,0 +1,13 @@
+// HIGHLIGHT: GENERIC_ERROR_OR_WARNING
+fun test(b: Boolean): Int {
+    return if (b)
+        baz { foo() }
+    else
+        baz { bar() }
+}
+
+fun foo() = 1
+
+fun bar() = 2
+
+fun baz(f: () -> Int) = f()

idea/testData/inspectionsLocal/unnecessaryVariable/ifElse5.kt

@@ -0,0 +1,18 @@
+// HIGHLIGHT: INFORMATION
+fun test(b: Boolean): Int {
+    val <caret>result = if (b)
+        baz {
+            foo()
+        }
+    else
+        baz {
+            bar()
+        }
+    return result
+}
+
+fun foo() = 1
+
+fun bar() = 2
+
+fun baz(f: () -> Int) = f()

idea/testData/inspectionsLocal/unnecessaryVariable/ifElse5.kt.after

@@ -0,0 +1,17 @@
+// HIGHLIGHT: INFORMATION
+fun test(b: Boolean): Int {
+    return if (b)
+        baz {
+            foo()
+        }
+    else
+        baz {
+            bar()
+        }
+}
+
+fun foo() = 1
+
+fun bar() = 2
+
+fun baz(f: () -> Int) = f()

idea/testData/inspectionsLocal/unnecessaryVariable/lambda.kt

@@ -0,0 +1,9 @@
+// HIGHLIGHT: GENERIC_ERROR_OR_WARNING
+fun test(): Int {
+    val <caret>result = foo { bar() }
+    return result
+}
+
+fun foo(f: () -> Int) = f()
+
+fun bar() = 1

idea/testData/inspectionsLocal/unnecessaryVariable/lambda.kt.after

@@ -0,0 +1,8 @@
+// HIGHLIGHT: GENERIC_ERROR_OR_WARNING
+fun test(): Int {
+    return foo { bar() }
+}
+
+fun foo(f: () -> Int) = f()
+
+fun bar() = 1

idea/testData/inspectionsLocal/unnecessaryVariable/lambda2.kt

@@ -0,0 +1,11 @@
+// HIGHLIGHT: INFORMATION
+fun test(): Int {
+    val <caret>result = foo {
+        bar()
+    }
+    return result
+}
+
+fun foo(f: () -> Int) = f()
+
+fun bar() = 1

idea/testData/inspectionsLocal/unnecessaryVariable/lambda2.kt.after

@@ -0,0 +1,10 @@
+// HIGHLIGHT: INFORMATION
+fun test(): Int {
+    return foo {
+        bar()
+    }
+}
+
+fun foo(f: () -> Int) = f()
+
+fun bar() = 1

idea/testData/inspectionsLocal/unnecessaryVariable/try.kt

@@ -0,0 +1,13 @@
+// HIGHLIGHT: INFORMATION
+fun test(): Int {
+    val <caret>result = try {
+        foo()
+    } finally {
+        bar()
+    }
+    return result
+}
+
+fun foo() = 1
+
+fun bar() {}

idea/testData/inspectionsLocal/unnecessaryVariable/try.kt.after

@@ -0,0 +1,12 @@
+// HIGHLIGHT: INFORMATION
+fun test(): Int {
+    return try {
+        foo()
+    } finally {
+        bar()
+    }
+}
+
+fun foo() = 1
+
+fun bar() {}

idea/testData/inspectionsLocal/unnecessaryVariable/when.kt

@@ -0,0 +1,12 @@
+// HIGHLIGHT: INFORMATION
+fun test(i: Int): Int {
+    val <caret>result = when (i) {
+        1 -> foo()
+        else -> bar()
+    }
+    return result
+}
+
+fun foo() = 1
+
+fun bar() = 2

idea/testData/inspectionsLocal/unnecessaryVariable/when.kt.after

@@ -0,0 +1,11 @@
+// HIGHLIGHT: INFORMATION
+fun test(i: Int): Int {
+    return when (i) {
+        1 -> foo()
+        else -> bar()
+    }
+}
+
+fun foo() = 1
+
+fun bar() = 2