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Kotlin compiler plugin that improves Swift interface of a Kotlin Multiplatform framework.

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package co.touchlab.skie.kir.irbuilder.util

import co.touchlab.skie.phases.KotlinIrPhase
import co.touchlab.skie.phases.irFactory
import co.touchlab.skie.shim.createSimpleFunction
import org.jetbrains.kotlin.backend.common.lower.DeclarationIrBuilder
import org.jetbrains.kotlin.descriptors.DescriptorVisibility
import org.jetbrains.kotlin.descriptors.Modality
import org.jetbrains.kotlin.ir.builders.IrBuilderWithScope
import org.jetbrains.kotlin.ir.builders.parent
import org.jetbrains.kotlin.ir.declarations.IrDeclarationOrigin
import org.jetbrains.kotlin.ir.declarations.IrSimpleFunction
import org.jetbrains.kotlin.ir.expressions.IrBody
import org.jetbrains.kotlin.ir.symbols.IrSimpleFunctionSymbol
import org.jetbrains.kotlin.ir.symbols.impl.IrSimpleFunctionSymbolImpl
import org.jetbrains.kotlin.ir.types.IrType
import org.jetbrains.kotlin.ir.util.patchDeclarationParents
import org.jetbrains.kotlin.name.Name

context(KotlinIrPhase.Context)
fun IrBuilderWithScope.irSimpleFunction(
    name: Name,
    visibility: DescriptorVisibility,
    returnType: IrType,
    origin: IrDeclarationOrigin,
    symbol: IrSimpleFunctionSymbol = IrSimpleFunctionSymbolImpl(),
    modality: Modality = Modality.FINAL,
    isInline: Boolean = false,
    isExternal: Boolean = false,
    isTailrec: Boolean = false,
    isSuspend: Boolean = false,
    isOperator: Boolean = false,
    isInfix: Boolean = false,
    isExpect: Boolean = false,
    isFakeOverride: Boolean = origin == IrDeclarationOrigin.FAKE_OVERRIDE,
    body: DeclarationIrBuilder.() -> IrBody,
): IrSimpleFunction =
    irFactory.createSimpleFunction(
        startOffset = startOffset,
        endOffset = endOffset,
        origin = origin,
        symbol = symbol,
        name = name,
        visibility = visibility,
        modality = modality,
        returnType = returnType,
        isInline = isInline,
        isExternal = isExternal,
        isTailrec = isTailrec,
        isSuspend = isSuspend,
        isOperator = isOperator,
        isInfix = isInfix,
        isExpect = isExpect,
        isFakeOverride = isFakeOverride,
    ).apply {
        val irDeclarationBuilder = DeclarationIrBuilder(context, symbol, startOffset = startOffset, endOffset = endOffset)

        this.body = irDeclarationBuilder.body()

        this.patchDeclarationParents([email protected])
    }