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Deprecation.kt
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Deprecation.kt
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package io.gitlab.arturbosch.detekt.rules.bugs
import io.gitlab.arturbosch.detekt.api.CodeSmell
import io.gitlab.arturbosch.detekt.api.Config
import io.gitlab.arturbosch.detekt.api.Debt
import io.gitlab.arturbosch.detekt.api.Entity
import io.gitlab.arturbosch.detekt.api.Issue
import io.gitlab.arturbosch.detekt.api.Rule
import io.gitlab.arturbosch.detekt.api.Severity
import io.gitlab.arturbosch.detekt.api.internal.RequiresTypeResolution
import org.jetbrains.kotlin.com.intellij.psi.PsiElement
import org.jetbrains.kotlin.diagnostics.Errors
import org.jetbrains.kotlin.psi.KtFile
import org.jetbrains.kotlin.psi.KtNamedDeclaration
import org.jetbrains.kotlin.resolve.BindingContext
/**
* Deprecated elements are expected to be removed in the future. Alternatives should be found if possible.
*
*/
@RequiresTypeResolution
class Deprecation(config: Config) : Rule(config) {
override val issue = Issue(
"Deprecation",
Severity.Defect,
"Deprecated elements should not be used.",
Debt.TWENTY_MINS
)
override val defaultRuleIdAliases = setOf("DEPRECATION")
override fun visitCondition(root: KtFile) = bindingContext != BindingContext.EMPTY && super.visitCondition(root)
override fun visitElement(element: PsiElement) {
if (hasDeprecationCompilerWarnings(element)) {
val entity = if (element is KtNamedDeclaration) Entity.atName(element) else Entity.from(element)
report(CodeSmell(issue, entity, "${element.text} is deprecated."))
}
super.visitElement(element)
}
private fun hasDeprecationCompilerWarnings(element: PsiElement) =
bindingContext.diagnostics
.forElement(element)
.any { it.factory == Errors.DEPRECATION }
}