org.jetbrains.kotlin.ir.backend.js.utils.MinimizedNameGenerator.kt Maven / Gradle / Ivy

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/*
 * Copyright 2010-2022 JetBrains s.r.o. and Kotlin Programming Language contributors.
 * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
 */

package org.jetbrains.kotlin.ir.backend.js.utils

class MinimizedNameGenerator {
    private var index = 0
    private val functionSignatureToName = mutableMapOf()
    private val reservedNames = mutableSetOf()

    fun generateNextName(): String {
        var candidate = index++.toJsIdentifier()
        while (candidate in reservedNames) {
            candidate = index++.toJsIdentifier()
        }
        return candidate
    }

    fun nameBySignature(signature: String): String {
        return functionSignatureToName.getOrPut(signature) {
            generateNextName()
        }
    }

    fun reserveName(signature: String) {
        reservedNames.add(signature)
    }

    fun clear() {
        index = 0
        functionSignatureToName.clear()
        reservedNames.clear()
    }
}