New Intention Action: Replace a call to forEach function with for loop.

Replaces an expression of form x.forEach { … } with for (a in x) { … }.

idea/testData/intentions/convertToForEachLoop/complexReceiver.kt

@@ -0,0 +1,6 @@
+// WITH_RUNTIME
+fun main() {
+    val x = 1..4
+
+    <caret>x.reverse().forEach { it }
+}

idea/testData/intentions/convertToForEachLoop/complexReceiver.kt.after

@@ -0,0 +1,8 @@
+// WITH_RUNTIME
+fun main() {
+    val x = 1..4
+
+    for (it in x.reverse()) {
+        it
+    }
+}

idea/testData/intentions/convertToForEachLoop/explicitFunctionLiteral.kt

@@ -0,0 +1,6 @@
+// WITH_RUNTIME
+fun foo() {
+    val x = 1..4
+
+    <caret>x.forEach({ y -> y })
+}

idea/testData/intentions/convertToForEachLoop/explicitFunctionLiteral.kt.after

@@ -0,0 +1,8 @@
+// WITH_RUNTIME
+fun foo() {
+    val x = 1..4
+
+    for (y in x) {
+        y
+    }
+}

idea/testData/intentions/convertToForEachLoop/extraArguments.kt

@@ -0,0 +1,11 @@
+// IS_APPLICABLE: false
+// WITH_RUNTIME
+class Foo {
+    fun forEach(predicate: (Int) -> Int, bar: Int): Int = predicate(bar)
+}
+
+fun main() {
+    val x = Foo()
+
+    <caret>x.forEach({ it * 2 }, 2)
+}

idea/testData/intentions/convertToForEachLoop/implicitFunctionLiteralParameter.kt

@@ -0,0 +1,6 @@
+// WITH_RUNTIME
+fun foo() {
+    val x = 1..4
+
+    <caret>x.forEach { it }
+}

idea/testData/intentions/convertToForEachLoop/implicitFunctionLiteralParameter.kt.after

@@ -0,0 +1,8 @@
+// WITH_RUNTIME
+fun foo() {
+    val x = 1..4
+
+    for (it in x) {
+        it
+    }
+}

idea/testData/intentions/convertToForEachLoop/infixCall.kt

@@ -0,0 +1,6 @@
+// WITH_RUNTIME
+fun foo() {
+    val x = 1..4
+
+    <caret>x forEach { a -> a }
+}

idea/testData/intentions/convertToForEachLoop/infixCall.kt.after

@@ -0,0 +1,8 @@
+// WITH_RUNTIME
+fun foo() {
+    val x = 1..4
+
+    for (a in x) {
+        a
+    }
+}

idea/testData/intentions/convertToForEachLoop/parenthesizedExpression.kt

@@ -0,0 +1,4 @@
+// WITH_RUNTIME
+fun main() {
+    <caret>(1 rangeTo 2).forEach { x -> x }
+}

idea/testData/intentions/convertToForEachLoop/parenthesizedExpression.kt.after

@@ -0,0 +1,6 @@
+// WITH_RUNTIME
+fun main() {
+    for (x in 1 rangeTo 2) {
+        x
+    }
+}

idea/testData/intentions/convertToForEachLoop/simple.kt

@@ -0,0 +1,6 @@
+// WITH_RUNTIME
+fun foo() {
+    val x = 1..4
+
+    <caret>x.forEach { it.equals(1) }
+}

idea/testData/intentions/convertToForEachLoop/simple.kt.after

@@ -0,0 +1,8 @@
+// WITH_RUNTIME
+fun foo() {
+    val x = 1..4
+
+    for (it in x) {
+        it.equals(1)
+    }
+}

idea/testData/intentions/convertToForEachLoop/typeArgumentPresent.kt

@@ -0,0 +1,6 @@
+// WITH_RUNTIME
+fun foo() {
+    val x = 1..4
+
+    <caret>x.forEach<Int>({ it })
+}

idea/testData/intentions/convertToForEachLoop/typeArgumentPresent.kt.after

@@ -0,0 +1,8 @@
+// WITH_RUNTIME
+fun foo() {
+    val x = 1..4
+
+    for (it in x) {
+        it
+    }
+}

idea/testData/intentions/convertToForEachLoop/userDefined.kt

@@ -0,0 +1,11 @@
+// IS_APPLICABLE: false
+// WITH_RUNTIME
+class Foo {
+    fun forEach(predicate: (Int) -> Int): Int = predicate(0)
+}
+
+fun main() {
+    val x = Foo()
+
+    <caret>x.forEach({ it * 2 })
+}

idea/testData/intentions/convertToForEachLoop/zeroArguments.kt

@@ -0,0 +1,11 @@
+// IS_APPLICABLE: false
+// WITH_RUNTIME
+class Foo {
+    fun forEach(): Int = 0
+}
+
+fun main() {
+    val x = Foo()
+
+    <caret>x.forEach()
+}