azalea/kotlin-fork
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Prohibit star-projections in last parameter of suspend functions

Browse Source
This commit is contained in:
Denis Zharkov
2016-09-29 15:51:26 +03:00
parent ea18ea0b8c
commit 96186c6217
5 changed files with 20 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files
compiler/frontend/src/org/jetbrains/kotlin/resolve/SuspendModifierChecker.kt
+7 -2
View File
@@ -46,7 +46,7 @@ object SuspendModifierChecker : SimpleDeclarationChecker {
val functionDescriptor = descriptor as? FunctionDescriptor ?: return
if (!functionDescriptor.isSuspend) return
val suspendModifierElement = declaration.modifierList?.getModifier(KtTokens.SUSPEND_KEYWORD).sure { "${declaration.text}" }
val suspendModifierElement = declaration.modifierList?.getModifier(KtTokens.SUSPEND_KEYWORD).sure { declaration.text }
fun report(message: String) {
diagnosticHolder.report(Errors.INAPPLICABLE_MODIFIER.on(suspendModifierElement, KtTokens.SUSPEND_KEYWORD, message))
}
@@ -70,11 +70,16 @@ object SuspendModifierChecker : SimpleDeclarationChecker {
}
}
val isValidContinuation = functionDescriptor.valueParameters.lastOrNull()?.type?.isValidContinuation() ?: false
val continuationParameterType = functionDescriptor.valueParameters.lastOrNull()?.type
val isValidContinuation = continuationParameterType?.isValidContinuation() ?: false
if (!isValidContinuation) {
report("last parameter of suspend function should have a type of Continuation<T>")
return
}
if (continuationParameterType?.arguments?.firstOrNull()?.isStarProjection == true) {
report("Continuation<*> is prohibited as a last parameter of suspend function")
}
}
}
compiler/testData/diagnostics/tests/coroutines/suspendApplicability.kt
Vendored
+5 -1
View File
@@ -27,7 +27,11 @@ class Controller {
}
<!INAPPLICABLE_MODIFIER!>suspend<!> fun starProjection(vararg x: Continuation<Any>) {
<!INAPPLICABLE_MODIFIER!>suspend<!> fun starProjection(x: Continuation<*>) {
}
<!INAPPLICABLE_MODIFIER!>suspend<!> fun varargs(vararg x: Continuation<Any>) {
}
compiler/testData/diagnostics/tests/coroutines/suspendApplicability.txt
Vendored
+2 -1
View File
@@ -10,9 +10,10 @@ public suspend fun kotlin.String.wrongExtension(/*0*/ x: kotlin.coroutines.Conti
public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
public final inline suspend fun inlineFun(/*0*/ x: kotlin.coroutines.Continuation<kotlin.Int>): kotlin.Unit
public final suspend fun noParams(): kotlin.Unit
public final suspend fun starProjection(/*0*/ vararg x: kotlin.coroutines.Continuation<kotlin.Any> /*kotlin.Array<out kotlin.coroutines.Continuation<kotlin.Any>>*/): kotlin.Unit
public final suspend fun starProjection(/*0*/ x: kotlin.coroutines.Continuation<*>): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
public final suspend fun valid(/*0*/ x: kotlin.coroutines.Continuation<kotlin.Int>): kotlin.Unit
public final suspend fun varargs(/*0*/ vararg x: kotlin.coroutines.Continuation<kotlin.Any> /*kotlin.Array<out kotlin.coroutines.Continuation<kotlin.Any>>*/): kotlin.Unit
public final suspend fun wrongParam(/*0*/ x: kotlin.collections.Collection<kotlin.Int>): kotlin.Unit
public final suspend fun kotlin.String.memberExtension(/*0*/ x: kotlin.coroutines.Continuation<kotlin.Int>): kotlin.Unit
}