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// Copyright 2000-2021 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
package org.jetbrains.kotlin.idea.inspections.jdk2k
import com.intellij.codeInspection.LocalQuickFix
import com.intellij.codeInspection.ProblemDescriptor
import com.intellij.codeInspection.ProblemsHolder
import com.intellij.openapi.project.Project
import org.jetbrains.kotlin.idea.KotlinBundle
import org.jetbrains.kotlin.idea.caches.resolve.analyze
import org.jetbrains.kotlin.idea.caches.resolve.resolveToCall
import org.jetbrains.kotlin.idea.inspections.AbstractKotlinInspection
import org.jetbrains.kotlin.idea.inspections.collections.isCalling
import org.jetbrains.kotlin.idea.util.safeAnalyzeNonSourceRootCode
import org.jetbrains.kotlin.idea.util.textRangeIn
import org.jetbrains.kotlin.name.FqName
import org.jetbrains.kotlin.psi.KtCallExpression
import org.jetbrains.kotlin.psi.KtSimpleNameExpression
import org.jetbrains.kotlin.psi.callExpressionVisitor
import org.jetbrains.kotlin.psi.psiUtil.getReceiverExpression
import org.jetbrains.kotlin.resolve.calls.util.getResolvedCall
import org.jetbrains.kotlin.resolve.calls.util.getType
import org.jetbrains.kotlin.resolve.lazy.BodyResolveMode
import org.jetbrains.kotlin.types.typeUtil.isChar
class ReplaceJavaStaticMethodWithKotlinAnalogInspection : AbstractKotlinInspection() {
override fun buildVisitor(holder: ProblemsHolder, isOnTheFly: Boolean) = callExpressionVisitor(fun(call) {
val callee = call.calleeExpression ?: return
val replacements = REPLACEMENTS[callee.text]
?.filter { it.filter(call) && it.transformation.isApplicable(call) }
?.takeIf { it.isNotEmpty() }
?.let { list ->
val context = call.safeAnalyzeNonSourceRootCode(BodyResolveMode.PARTIAL)
val callDescriptor = call.getResolvedCall(context) ?: return
list.filter {
callDescriptor.isCalling(FqName(it.javaMethodFqName)) && it.transformation.isApplicableInContext(
call,
context
)
}
}
?.takeIf { it.isNotEmpty() }
?.map(::ReplaceWithKotlinAnalogFunction)
?.toTypedArray() ?: return
holder.registerProblem(
call,
callee.textRangeIn(call),
KotlinBundle.message("should.be.replaced.with.kotlin.function"),
*replacements
)
})
private class ReplaceWithKotlinAnalogFunction(private val replacement: Replacement) : LocalQuickFix {
override fun getName() = KotlinBundle.message("replace.with.kotlin.analog.function.text", replacement.kotlinFunctionShortName)
override fun getFamilyName() = KotlinBundle.message("replace.with.kotlin.analog.function.family.name")
override fun applyFix(project: Project, descriptor: ProblemDescriptor) {
val callExpression = descriptor.psiElement as? KtCallExpression ?: return
replacement.transformation(callExpression, replacement)
}
}
companion object {
private val JAVA_PRIMITIVES = listOf(
"Integer" to "Int",
"Long" to "Long",
"Byte" to "Byte",
"Character" to "Char",
"Short" to "Short",
"Double" to "Double",
"Float" to "Float"
).flatMap { (javaPrimitive, kotlinPrimitive) ->
listOf(
Replacement("java.lang.$javaPrimitive.toString", "kotlin.text.toString", ToExtensionFunctionWithNonNullableReceiver) {
it.valueArguments.size == 2
},
Replacement(
"java.lang.$javaPrimitive.toString",
"kotlin.primitives.$kotlinPrimitive.toString",
ToExtensionFunctionWithNullableReceiver
) { call ->
val valueArguments = call.valueArguments
when {
valueArguments.size != 1 -> false
javaPrimitive != "Character" -> true
else -> {
val singleArgument = valueArguments.single().getArgumentExpression()
if (singleArgument != null) {
val context = call.analyze(BodyResolveMode.PARTIAL)
singleArgument.getType(context)?.isChar() == true
} else {
false
}
}
}
},
Replacement(
"java.lang.$javaPrimitive.compare",
"kotlin.primitives.$kotlinPrimitive.compareTo",
ToExtensionFunctionWithNonNullableReceiver
)
)
}
private val JAVA_IO = listOf(
Replacement("java.io.PrintStream.print", "kotlin.io.print", filter = ::isJavaSystemOut),
Replacement("java.io.PrintStream.println", "kotlin.io.println", filter = ::isJavaSystemOut)
)
// TODO: implement [java.lang.System.arraycopy]
private val JAVA_SYSTEM = listOf(
Replacement("java.lang.System.exit", "kotlin.system.exitProcess")
)
private val JAVA_MATH = listOf(
Replacement("java.lang.Math.abs", "kotlin.math.abs"),
Replacement("java.lang.Math.acos", "kotlin.math.acos"),
Replacement("java.lang.Math.asin", "kotlin.math.asin"),
Replacement("java.lang.Math.atan", "kotlin.math.atan"),
Replacement("java.lang.Math.atan2", "kotlin.math.atan2"),
Replacement("java.lang.Math.ceil", "kotlin.math.ceil"),
Replacement("java.lang.Math.cos", "kotlin.math.cos"),
Replacement("java.lang.Math.cosh", "kotlin.math.cosh"),
Replacement("java.lang.Math.exp", "kotlin.math.exp"),
Replacement("java.lang.Math.expm1", "kotlin.math.expm1"),
Replacement("java.lang.Math.floor", "kotlin.math.floor"),
Replacement("java.lang.Math.hypot", "kotlin.math.hypot"),
Replacement("java.lang.Math.IEEEremainder", "kotlin.math.IEEErem", ToExtensionFunctionWithNonNullableReceiver),
Replacement("java.lang.Math.log", "kotlin.math.ln"),
Replacement("java.lang.Math.log1p", "kotlin.math.ln1p"),
Replacement("java.lang.Math.log10", "kotlin.math.log10"),
Replacement("java.lang.Math.max", "kotlin.math.max"),
Replacement("java.lang.Math.max", "kotlin.ranges.coerceAtLeast", ToExtensionFunctionWithNonNullableReceiver),
Replacement("java.lang.Math.min", "kotlin.math.min"),
Replacement("java.lang.Math.min", "kotlin.ranges.coerceAtMost", ToExtensionFunctionWithNonNullableReceiver),
Replacement("java.lang.Math.nextDown", "kotlin.math.nextDown", ToExtensionFunctionWithNonNullableReceiver),
Replacement("java.lang.Math.nextAfter", "kotlin.math.nextTowards", ToExtensionFunctionWithNonNullableReceiver),
Replacement("java.lang.Math.nextUp", "kotlin.math.nextUp", ToExtensionFunctionWithNonNullableReceiver),
Replacement("java.lang.Math.pow", "kotlin.math.pow", ToExtensionFunctionWithNonNullableReceiver),
Replacement("java.lang.Math.rint", "kotlin.math.round"),
Replacement("java.lang.Math.round", "kotlin.math.roundToLong", ToExtensionFunctionWithNonNullableReceiver),
Replacement("java.lang.Math.round", "kotlin.math.roundToInt", ToExtensionFunctionWithNonNullableReceiver),
Replacement("java.lang.Math.signum", "kotlin.math.sign"),
Replacement("java.lang.Math.sin", "kotlin.math.sin"),
Replacement("java.lang.Math.sinh", "kotlin.math.sinh"),
Replacement("java.lang.Math.sqrt", "kotlin.math.sqrt"),
Replacement("java.lang.Math.tan", "kotlin.math.tan"),
Replacement("java.lang.Math.tanh", "kotlin.math.tanh"),
Replacement("java.lang.Math.copySign", "kotlin.math.withSign", ToExtensionFunctionWithNonNullableReceiver)
)
// TODO: implement [java.util.Arrays.binarySearch, java.util.Arrays.fill, java.util.Arrays.sort]
private val JAVA_COLLECTIONS = listOf(
Replacement("java.util.Arrays.copyOf", "kotlin.collections.copyOf", ToExtensionFunctionWithNonNullableReceiver) {
it.valueArguments.size == 2
},
Replacement("java.util.Arrays.copyOfRange", "kotlin.collections.copyOfRange", ToExtensionFunctionWithNonNullableReceiver),
Replacement("java.util.Arrays.equals", "kotlin.collections.contentEquals", ToExtensionFunctionWithNonNullableArguments) {
it.valueArguments.size == 2
},
Replacement("java.util.Arrays.deepEquals", "kotlin.collections.contentDeepEquals", ToExtensionFunctionWithNonNullableArguments),
Replacement(
"java.util.Arrays.deepHashCode",
"kotlin.collections.contentDeepHashCode",
ToExtensionFunctionWithNonNullableReceiver
),
Replacement("java.util.Arrays.hashCode", "kotlin.collections.contentHashCode", ToExtensionFunctionWithNonNullableReceiver),
Replacement(
"java.util.Arrays.deepToString",
"kotlin.collections.contentDeepToString",
ToExtensionFunctionWithNonNullableReceiver
),
Replacement("java.util.Arrays.toString", "kotlin.collections.contentToString", ToExtensionFunctionWithNonNullableReceiver),
Replacement("java.util.Arrays.asList", "kotlin.collections.listOf"),
Replacement("java.util.Arrays.asList", "kotlin.collections.mutableListOf"),
Replacement("java.util.Set.of", "kotlin.collections.setOf"),
Replacement("java.util.Set.of", "kotlin.collections.mutableSetOf"),
Replacement("java.util.List.of", "kotlin.collections.listOf"),
Replacement("java.util.List.of", "kotlin.collections.mutableListOf")
)
private val REPLACEMENTS = (JAVA_MATH + JAVA_SYSTEM + JAVA_IO + JAVA_PRIMITIVES + JAVA_COLLECTIONS)
.groupBy { it.javaMethodShortName }
}
}
data class Replacement(
val javaMethodFqName: String,
val kotlinFunctionFqName: String,
val transformation: Transformation = WithoutAdditionalTransformation,
val filter: (KtCallExpression) -> Boolean = { true }
) {
private fun String.shortName() = takeLastWhile { it != '.' }
val javaMethodShortName = javaMethodFqName.shortName()
val kotlinFunctionShortName = kotlinFunctionFqName.shortName()
}
private fun isJavaSystemOut(callExpression: KtCallExpression): Boolean =
(callExpression.calleeExpression as? KtSimpleNameExpression)
?.getReceiverExpression()
?.resolveToCall()
?.isCalling(FqName("java.lang.System.out")) ?: false
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