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Make CharSequence.length a function instead of property

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And String.length as well.

This is done for JVM interoperability: java.lang.CharSequence is an open class
and has a function 'length()' which should be implemented in subclasses
somehow.

A minor unexpected effect of this is that String.length() is now a compile-time
constant (it wasn't such as a property because properties are not supported in
compile-time constant evaluation)

 #KT-3571 Fixed
This commit is contained in:
Alexander Udalov
2014-11-26 18:50:04 +03:00
parent 6b8da062a4
commit a7b88e9485
159 changed files with 265 additions and 313 deletions
Download Patch File Download Diff File Expand all files Collapse all files
compiler/testData/diagnostics/tests/nullabilityAndSmartCasts/kt244.kt
+6 -6
View File
@@ -5,18 +5,18 @@ package kt244
fun f(s: String?) {
if (s != null) {
<!DEBUG_INFO_SMARTCAST!>s<!>.length //ok
var <!UNUSED_VARIABLE!>i<!> = <!DEBUG_INFO_SMARTCAST!>s<!>.length //error: Only safe calls are allowed on a nullable receiver
System.out.println(<!DEBUG_INFO_SMARTCAST!>s<!>.length) //error
<!DEBUG_INFO_SMARTCAST!>s<!>.length() //ok
var <!UNUSED_VARIABLE!>i<!> = <!DEBUG_INFO_SMARTCAST!>s<!>.length() //error: Only safe calls are allowed on a nullable receiver
System.out.println(<!DEBUG_INFO_SMARTCAST!>s<!>.length()) //error
}
}
// more tests
class A(a: String?) {
val b = if (a != null) <!DEBUG_INFO_SMARTCAST!>a<!>.length else 1
val b = if (a != null) <!DEBUG_INFO_SMARTCAST!>a<!>.length() else 1
{
if (a != null) {
val <!UNUSED_VARIABLE!>c<!> = <!DEBUG_INFO_SMARTCAST!>a<!>.length
val <!UNUSED_VARIABLE!>c<!> = <!DEBUG_INFO_SMARTCAST!>a<!>.length()
}
}
@@ -24,7 +24,7 @@ class A(a: String?) {
{
if (a is String) {
i = <!DEBUG_INFO_SMARTCAST!>a<!>.length
i = <!DEBUG_INFO_SMARTCAST!>a<!>.length()
}
else {
i = 3