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FIR IDE: add helper checking if a type is flexbily nullable

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This commit is contained in:
Tianyu Geng
2021-10-05 15:23:16 -07:00
committed by Ilya Kirillov
parent 68e70769c8
commit 39939c7213
1 changed files with 8 additions and 2 deletions
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analysis/analysis-api/src/org/jetbrains/kotlin/analysis/api/components/KtTypeInfoProvider.kt
+8 -2
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@@ -5,10 +5,13 @@
package org.jetbrains.kotlin.analysis.api.components
import org.jetbrains.kotlin.builtins.StandardNames
import org.jetbrains.kotlin.analysis.api.symbols.KtClassOrObjectSymbol
import org.jetbrains.kotlin.analysis.api.symbols.KtTypeAliasSymbol
import org.jetbrains.kotlin.analysis.api.types.*
import org.jetbrains.kotlin.analysis.api.types.KtFlexibleType
import org.jetbrains.kotlin.analysis.api.types.KtNonErrorClassType
import org.jetbrains.kotlin.analysis.api.types.KtType
import org.jetbrains.kotlin.analysis.api.types.KtTypeNullability
import org.jetbrains.kotlin.builtins.StandardNames
import org.jetbrains.kotlin.name.ClassId
public abstract class KtTypeInfoProvider : KtAnalysisSessionComponent() {
@@ -34,6 +37,9 @@ public interface KtTypeInfoProviderMixIn : KtAnalysisSessionMixIn {
/** Returns true if the type is explicitly marked as nullable. This means it's safe to assign `null` to a variable with this type. */
public val KtType.isMarkedNullable: Boolean get() = this.nullability == KtTypeNullability.NULLABLE
/** Returns true if the type is a platform flexible type and may or may not be marked nullable. */
public val KtType.hasFlexibleNullability: Boolean get() = this is KtFlexibleType && this.upperBound.isMarkedNullable != this.lowerBound.isMarkedNullable
public val KtType.isUnit: Boolean get() = isClassTypeWithClassId(DefaultTypeClassIds.UNIT)
public val KtType.isInt: Boolean get() = isClassTypeWithClassId(DefaultTypeClassIds.INT)
public val KtType.isLong: Boolean get() = isClassTypeWithClassId(DefaultTypeClassIds.LONG)