Added DoubleBangToIfThenIntention

idea/testData/intentions/branched/doubleBangToIfThen/callExpression.kt

@@ -0,0 +1,7 @@
+fun foo(): String? {
+    return "foo"
+}
+
+fun main(args: Array<String>) {
+    foo()<caret>!!
+}

idea/testData/intentions/branched/doubleBangToIfThen/callExpression.kt.after

@@ -0,0 +1,7 @@
+fun foo(): String? {
+    return "foo"
+}
+
+fun main(args: Array<String>) {
+    if (foo() == null) throw NullPointerException("Expression 'foo()' must not be null")
+}

idea/testData/intentions/branched/doubleBangToIfThen/callExpressionParens.kt

@@ -0,0 +1,7 @@
+fun foo(): String? {
+    return "foo"
+}
+
+fun main(args: Array<String>) {
+    (foo())<caret>!!
+}

idea/testData/intentions/branched/doubleBangToIfThen/callExpressionParens.kt.after

@@ -0,0 +1,7 @@
+fun foo(): String? {
+    return "foo"
+}
+
+fun main(args: Array<String>) {
+    if (foo() == null) throw NullPointerException("Expression 'foo()' must not be null")
+}

idea/testData/intentions/branched/doubleBangToIfThen/exceptionTextEscapesQuotes.kt

@@ -0,0 +1,5 @@
+fun main(args: Array<String>) {
+    doSomething("one")<caret>!!
+}
+
+fun doSomething(a: Any): Any? = null

idea/testData/intentions/branched/doubleBangToIfThen/exceptionTextEscapesQuotes.kt.after

@@ -0,0 +1,5 @@
+fun main(args: Array<String>) {
+    if (doSomething("one") == null) throw NullPointerException("Expression 'doSomething(\"one\")' must not be null")
+}
+
+fun doSomething(a: Any): Any? = null

idea/testData/intentions/branched/doubleBangToIfThen/exceptionTextHandlesMultiline.kt

@@ -0,0 +1,7 @@
+fun main(args: Array<String>) {
+    val t = doSomething("one" + 1,
+            "two",
+            3 * 4)<caret>!!
+}
+
+fun doSomething(vararg a: Any): Any? = null

idea/testData/intentions/branched/doubleBangToIfThen/exceptionTextHandlesMultiline.kt.after

@@ -0,0 +1,8 @@
+fun main(args: Array<String>) {
+    val any = doSomething("one" + 1,
+            "two",
+            3 * 4)
+    val t = if (any != null) any else throw NullPointerException("Expression 'doSomething(\"one\" + 1, ...' must not be null")
+}
+
+fun doSomething(vararg a: Any): Any? = null

idea/testData/intentions/branched/doubleBangToIfThen/localVal.kt

@@ -0,0 +1,4 @@
+fun main(args: Array<String>) {
+    val a: String? = "A"
+    a<caret>!!
+}

idea/testData/intentions/branched/doubleBangToIfThen/localVal.kt.after

@@ -0,0 +1,4 @@
+fun main(args: Array<String>) {
+    val a: String? = "A"
+    if (a == null) throw NullPointerException("Expression 'a' must not be null")
+}

idea/testData/intentions/branched/doubleBangToIfThen/localVar.kt

@@ -0,0 +1,6 @@
+fun main(args: Array<String>) {
+    var a: String? = "A"
+    doSomething(a<caret>!!)
+}
+
+fun doSomething(a: Any){}

idea/testData/intentions/branched/doubleBangToIfThen/localVar.kt.after

@@ -0,0 +1,7 @@
+fun main(args: Array<String>) {
+    var a: String? = "A"
+    val s = a
+    doSomething(if (s != null) s else throw NullPointerException("Expression 'a' must not be null"))
+}
+
+fun doSomething(a: Any){}

idea/testData/intentions/branched/doubleBangToIfThen/simpleNameExpressionInParens.kt

@@ -0,0 +1,4 @@
+fun main(args: Array<String>) {
+    val foo: String? = "foo"
+    val t = (foo)<caret>!!
+}

idea/testData/intentions/branched/doubleBangToIfThen/simpleNameExpressionInParens.kt.after

@@ -0,0 +1,4 @@
+fun main(args: Array<String>) {
+    val foo: String? = "foo"
+    val t = if (foo != null) foo else throw NullPointerException("Expression 'foo' must not be null")
+}

idea/testData/intentions/branched/doubleBangToIfThen/topLevelVal.kt

@@ -0,0 +1,4 @@
+val a: String? = "A"
+fun main(args: Array<String>) {
+    a<caret>!!
+}

idea/testData/intentions/branched/doubleBangToIfThen/topLevelVal.kt.after

@@ -0,0 +1,4 @@
+val a: String? = "A"
+fun main(args: Array<String>) {
+    if (a == null) throw NullPointerException("Expression 'a' must not be null")
+}

idea/testData/intentions/branched/doubleBangToIfThen/topLevelValCustomGetter.kt

@@ -0,0 +1,6 @@
+val a: String?
+    get() = ""
+
+fun main(args: Array<String>) {
+    val x = a<caret>!!
+}

idea/testData/intentions/branched/doubleBangToIfThen/topLevelValCustomGetter.kt.after

@@ -0,0 +1,7 @@
+val a: String?
+    get() = ""
+
+fun main(args: Array<String>) {
+    val s = a
+    val x = if (s != null) s else throw NullPointerException("Expression 'a' must not be null")
+}

idea/testData/intentions/branched/doubleBangToIfThen/topLevelVar.kt

@@ -0,0 +1,4 @@
+var a: String? = "A"
+fun main(args: Array<String>) {
+    val t = a<caret>!!
+}

idea/testData/intentions/branched/doubleBangToIfThen/topLevelVar.kt.after

@@ -0,0 +1,5 @@
+var a: String? = "A"
+fun main(args: Array<String>) {
+    val s = a
+    val t = if (s != null) s else throw NullPointerException("Expression 'a' must not be null")
+}

idea/testData/intentions/branched/doubleBangToIfThen/topLevelVarCustomGetter.kt

@@ -0,0 +1,9 @@
+var a: String?
+    get() = ""
+    set(v) {}
+
+fun main(args: Array<String>) {
+    doSomething(a<caret>!!)
+}
+
+fun doSomething(a: Any){}

idea/testData/intentions/branched/doubleBangToIfThen/topLevelVarCustomGetter.kt.after

@@ -0,0 +1,10 @@
+var a: String?
+    get() = ""
+    set(v) {}
+
+fun main(args: Array<String>) {
+    val s = a
+    doSomething(if (s != null) s else throw NullPointerException("Expression 'a' must not be null"))
+}
+
+fun doSomething(a: Any){}

idea/testData/intentions/branched/doubleBangToIfThen/usedInAssignment.kt

@@ -0,0 +1,4 @@
+fun main(args: Array<String>) {
+    val foo: String? = "foo"
+    val x = foo<caret>!!
+}

idea/testData/intentions/branched/doubleBangToIfThen/usedInAssignment.kt.after

@@ -0,0 +1,4 @@
+fun main(args: Array<String>) {
+    val foo: String? = "foo"
+    val x = if (foo != null) foo else throw NullPointerException("Expression 'foo' must not be null")
+}