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

[NI] Don't perform useless computation for smartcasts

Browse Source
This commit is contained in:
Mikhail Zarechenskiy
2018-03-23 05:28:22 +03:00
parent e06c13732f
commit 15b46cdda9
1 changed files with 23 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files
compiler/resolution/src/org/jetbrains/kotlin/resolve/calls/components/KotlinCallCompleter.kt
+23 -14
View File
@@ -120,24 +120,33 @@ class KotlinCallCompleter(
expectedType: UnwrappedType?,
resolutionCallbacks: KotlinResolutionCallbacks
): ConstraintSystemCompletionMode {
val unsubstitutedReturnType = resolvedCall.candidateDescriptor.returnType?.unwrap() ?: return ConstraintSystemCompletionMode.PARTIAL
val withSmartCastInfo = resolutionCallbacks.createReceiverWithSmartCastInfo(resolvedCall)
if (expectedType != null && TypeUtils.noExpectedType(expectedType)) return ConstraintSystemCompletionMode.FULL
val actualType = withSmartCastInfo?.stableType ?: unsubstitutedReturnType
val returnType = resolvedCall.candidateDescriptor.returnType?.unwrap() ?: return ConstraintSystemCompletionMode.PARTIAL
val substitutedType: UnwrappedType
if (expectedType != null) {
val returnTypeWithSmartCastInfo = computeReturnTypeWithSmartCastInfo(returnType, resolutionCallbacks)
substitutedType = resolvedCall.substitutor.substituteKeepAnnotations(returnTypeWithSmartCastInfo)
val returnType = resolvedCall.substitutor.substituteKeepAnnotations(actualType)
if (expectedType != null && !TypeUtils.noExpectedType(expectedType) && !resolutionCallbacks.isCompileTimeConstant(
resolvedCall,
expectedType
)) {
csBuilder.addSubtypeConstraint(returnType, expectedType, ExpectedTypeConstraintPosition(resolvedCall.atom))
}
return if (expectedType != null || csBuilder.isProperType(returnType)) {
ConstraintSystemCompletionMode.FULL
if (!resolutionCallbacks.isCompileTimeConstant(resolvedCall, expectedType)) {
csBuilder.addSubtypeConstraint(substitutedType, expectedType, ExpectedTypeConstraintPosition(resolvedCall.atom))
}
} else {
ConstraintSystemCompletionMode.PARTIAL
substitutedType = resolvedCall.substitutor.substituteKeepAnnotations(returnType)
}
return if (expectedType != null || csBuilder.isProperType(substitutedType))
ConstraintSystemCompletionMode.FULL
else
ConstraintSystemCompletionMode.PARTIAL
}
private fun KotlinResolutionCandidate.computeReturnTypeWithSmartCastInfo(
returnType: UnwrappedType,
resolutionCallbacks: KotlinResolutionCallbacks
): UnwrappedType {
if (resolvedCall.atom.callKind != KotlinCallKind.VARIABLE) return returnType
return resolutionCallbacks.createReceiverWithSmartCastInfo(resolvedCall)?.stableType ?: returnType
}
private fun KotlinResolutionCandidate?.asCallResolutionResult(