Sergej Jaskiewicz
d7d86a0e95
If a lambda expression does not capture any local variables, convert
it to a global free function and replace the lambda creation with
a reference to that function.
Example: for the following Kotlin code
```kotlin
fun foo(f: () -> Unit) = f()
fun bar() = foo { console.log("hello") }
```
before this patch, we generated:
```js
function foo(f) {
return f();
}
function bar() {
return foo(bar$lambda());
}
function bar$lambda() {
return function () {
console.log('hello');
};
}
```
after this patch, we generate:
```js
function foo(f) {
return f();
}
function bar() {
return foo(bar$lambda);
}
function bar$lambda() {
console.log('hello');
}
```
57 lines
1.6 KiB
Kotlin
Vendored
57 lines
1.6 KiB
Kotlin
Vendored
// WITH_STDLIB
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// CHECK_CASES_COUNT: function=bar1_u51tkt$ count=3 TARGET_BACKENDS=JS
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// CHECK_IF_COUNT: function=bar1_u51tkt$ count=0 TARGET_BACKENDS=JS
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// CHECK_CASES_COUNT: function=A$bar2$lambda count=3 TARGET_BACKENDS=JS
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// CHECK_CASES_COUNT: function=A$bar2$lambda count=4 IGNORED_BACKENDS=JS
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// CHECK_IF_COUNT: function=A$bar2$lambda count=0
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import kotlin.test.assertEquals
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enum class Season {
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WINTER,
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SPRING,
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SUMMER,
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AUTUMN
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}
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class A {
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public fun bar1(x : Season) : String {
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when (x) {
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Season.WINTER, Season.SPRING -> return "winter_spring"
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Season.SPRING -> return "spring"
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Season.SUMMER -> return "summer"
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else -> return "autumn";
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}
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}
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public fun bar2(y : Season) : String {
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return bar3(y) { x ->
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when (x) {
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Season.WINTER, Season.SPRING -> "winter_spring"
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Season.SPRING -> "spring"
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Season.SUMMER -> "summer"
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else -> "autumn"
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}
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}
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}
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private fun bar3(x : Season, block : (Season) -> String) = block(x)
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}
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fun box() : String {
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val a = A()
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assertEquals("winter_spring", a.bar1(Season.WINTER))
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assertEquals("winter_spring", a.bar1(Season.SPRING))
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assertEquals("summer", a.bar1(Season.SUMMER))
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assertEquals("autumn", a.bar1(Season.AUTUMN))
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assertEquals("winter_spring", a.bar2(Season.WINTER))
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assertEquals("winter_spring", a.bar2(Season.SPRING))
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assertEquals("summer", a.bar2(Season.SUMMER))
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assertEquals("autumn", a.bar2(Season.AUTUMN))
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return "OK"
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}
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