KT-20010 'Replace safe access expression with 'if' expression' IDEA Kotlin plugin intention may failed (#1288)

* 'Replace safe access expression with 'if' expression' IDEA Kotlin plugin intention may failed #KT-20010 Fixed

* #KT-20010 Fixed

idea/testData/intentions/branched/safeAccessToIfThen/assignment.kt

@@ -0,0 +1,9 @@
+class Foo {
+    var bar: Bar? = null
+}
+class Bar {
+    var baz = 1
+}
+fun test(foo: Foo?) {
+    foo?<caret>.bar = Bar()
+}

idea/testData/intentions/branched/safeAccessToIfThen/assignment.kt.after

@@ -0,0 +1,9 @@
+class Foo {
+    var bar: Bar? = null
+}
+class Bar {
+    var baz = 1
+}
+fun test(foo: Foo?) {
+    if (foo != null) foo.bar = Bar()
+}

idea/testData/intentions/branched/safeAccessToIfThen/assignment2.kt

@@ -0,0 +1,9 @@
+class Foo {
+    var bar: Bar? = null
+}
+class Bar {
+    var baz = 1
+}
+fun test(foo: Foo?) {
+    foo?<caret>.bar?.baz = 2
+}

idea/testData/intentions/branched/safeAccessToIfThen/assignment2.kt.after

@@ -0,0 +1,9 @@
+class Foo {
+    var bar: Bar? = null
+}
+class Bar {
+    var baz = 1
+}
+fun test(foo: Foo?) {
+    (if (foo != null) foo.bar else null)?.baz = 2
+}

idea/testData/intentions/branched/safeAccessToIfThen/assignment3.kt

@@ -0,0 +1,9 @@
+class Foo {
+    var bar: Bar? = null
+}
+class Bar {
+    var baz = 1
+}
+fun test(foo: Foo?) {
+    foo?.bar?<caret>.baz = 2
+}

idea/testData/intentions/branched/safeAccessToIfThen/assignment3.kt.after

@@ -0,0 +1,10 @@
+class Foo {
+    var bar: Bar? = null
+}
+class Bar {
+    var baz = 1
+}
+fun test(foo: Foo?) {
+    val bar = foo?.bar
+    if (bar != null) bar.baz = 2
+}

idea/testData/intentions/branched/safeAccessToIfThen/equality.kt

@@ -0,0 +1,9 @@
+class Foo {
+    var bar: Bar? = null
+}
+class Bar {
+    var baz = 1
+}
+fun test(foo: Foo?) {
+    foo?<caret>.bar == null
+}

idea/testData/intentions/branched/safeAccessToIfThen/equality.kt.after

@@ -0,0 +1,9 @@
+class Foo {
+    var bar: Bar? = null
+}
+class Bar {
+    var baz = 1
+}
+fun test(foo: Foo?) {
+    (if (foo != null) foo.bar else null) == null
+}