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');
}
```
24 lines
627 B
Kotlin
Vendored
24 lines
627 B
Kotlin
Vendored
// EXPECTED_REACHABLE_NODES: 1284
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package foo
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// CHECK_FUNCTION_EXISTS: multiplyBy2$lambda
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// CHECK_CALLED_IN_SCOPE: scope=multiplyBy2 function=multiplyBy2$lambda TARGET_BACKENDS=JS
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// HAS_NO_CAPTURED_VARS: function=multiplyBy2 except=multiplyBy2$lambda
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// CHECK_NOT_CALLED_IN_SCOPE: scope=multiplyBy2 function=run
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internal inline fun <T> run(noinline func: (T) -> T, arg: T): T {
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return func(arg)
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}
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internal fun multiplyBy2(x: Int): Int {
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return run({ it * 2 }, x)
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}
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fun box(): String {
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assertEquals(0, multiplyBy2(0))
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assertEquals(4, multiplyBy2(2))
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assertEquals(8, multiplyBy2(4))
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return "OK"
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}
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