package org.jetbrains.skia

internal expect fun <R> commonSynchronized(lock: Any, block: () -> R)

internal expect fun defaultLanguageTag(): String

expect class Pattern {
    fun split(input: CharSequence): Array<String>
    fun matcher(input: CharSequence): Matcher
}

expect class Matcher {
    // Named groups are not supported in k/n. That's why we can use only numeric groups
    fun group(ix: Int): String?
    fun matches(): Boolean
}

internal expect fun compilePattern(regex: String): Pattern

@OptIn(ExperimentalMultiplatform::class)
@OptionalExpectation
expect annotation class ExternalSymbolName(val name: String)

@OptIn(ExperimentalMultiplatform::class)
@OptionalExpectation
@Target(AnnotationTarget.FUNCTION)
expect annotation class ModuleImport(
    val module: String,
    val name: String
)