/
MultilineRawString.kt
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/
MultilineRawString.kt
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package io.gitlab.arturbosch.detekt.rules.style
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 org.jetbrains.kotlin.psi.KtCallExpression
import org.jetbrains.kotlin.psi.KtExpression
import org.jetbrains.kotlin.psi.KtStringTemplateExpression
import org.jetbrains.kotlin.psi.psiUtil.getQualifiedExpressionForReceiver
import org.jetbrains.kotlin.psi.psiUtil.getQualifiedExpressionForSelectorOrThis
/**
* All the Raw strings that have more than one line should be followed by `trimMargin()` or `trimIndent()`.
*
* <noncompliant>
* """
* Hello World!
* How are you?
* """
* </noncompliant>
*
* <compliant>
* """
* | Hello World!
* | How are you?
* """.trimMargin()
*
* """
* Hello World!
* How are you?
* """.trimIndent()
*
* """Hello World! How are you?"""
* </compliant>
*/
class MultilineRawString(val config: Config) : Rule(config) {
override val issue = Issue(
javaClass.simpleName,
Severity.Style,
"Multiline raw strings should be followed by `trimMargin()` or `trimIndent()`.",
Debt.FIVE_MINS
)
override fun visitStringTemplateExpression(expression: KtStringTemplateExpression) {
super.visitStringTemplateExpression(expression)
if (expression.text.lines().count() == 1) return
val nextCall = expression.getQualifiedExpressionForSelectorOrThis()
.getQualifiedExpressionForReceiver()
?.selectorExpression
?.asKtCallExpression()
?.calleeExpression
?.text
if (nextCall !in trimFunctions) {
report(
CodeSmell(
issue,
Entity.from(expression),
"Multiline raw strings should be followd by `trimMargin()` or `trimIndent()`",
)
)
}
}
}
private fun KtExpression.asKtCallExpression(): KtCallExpression? = this as? KtCallExpression
private val trimFunctions = listOf("trimIndent", "trimMargin")