org.jetbrains.kotlin.library.impl.IrFileReaders.kt Maven / Gradle / Ivy
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Common klib reader and writer
/*
* Copyright 2010-2019 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.library.impl
import org.jetbrains.kotlin.konan.file.File
import java.nio.ByteBuffer
abstract class IrArrayReader(private val buffer: ReadBuffer) {
private val indexToOffset: IntArray
fun entryCount() = indexToOffset.size - 1
init {
val count = buffer.int
indexToOffset = IntArray(count + 1)
indexToOffset[0] = 4 * (count + 1)
for (i in 0 until count) {
val size = buffer.int
indexToOffset[i + 1] = indexToOffset[i] + size
}
}
fun tableItemBytes(id: Int): ByteArray {
val offset = indexToOffset[id]
val size = indexToOffset[id + 1] - offset
val result = ByteArray(size)
buffer.position = offset
buffer.get(result, 0, size)
return result
}
}
class IrArrayFileReader(file: File) : IrArrayReader(ReadBuffer.WeakFileBuffer(file.javaFile()))
class IrArrayMemoryReader(bytes: ByteArray) : IrArrayReader(ReadBuffer.MemoryBuffer(bytes))
class IrIntArrayMemoryReader(bytes: ByteArray) {
val array = run {
val buffer = ReadBuffer.MemoryBuffer(bytes)
val result = IntArray(buffer.int)
for (i in result.indices) {
result[i] = buffer.int
}
result
}
}
class IrLongArrayMemoryReader(bytes: ByteArray) {
val array = run {
val buffer = ReadBuffer.MemoryBuffer(bytes)
val result = LongArray(buffer.int)
for (i in result.indices) {
result[i] = buffer.long
}
result
}
}
abstract class IrMultiArrayReader(private val buffer: ReadBuffer) {
private val indexToOffset: IntArray
private val indexIndexToOffset = mutableMapOf()
private fun readOffsets(position: Int): IntArray {
buffer.position = position
val count = buffer.int
val result = IntArray(count + 1)
result[0] = 4 * (count + 1)
for (i in 0 until count) {
val size = buffer.int
result[i + 1] = result[i] + size
}
return result
}
init {
indexToOffset = readOffsets(0)
}
fun tableItemBytes(id: Int): ByteArray {
val offset = indexToOffset[id]
val size = indexToOffset[id + 1] - offset
val result = ByteArray(size)
buffer.position = offset
buffer.get(result, 0, size)
return result
}
fun tableItemBytes(row: Int, column: Int): ByteArray {
val rowOffset = indexToOffset[row]
val columnOffsets = indexIndexToOffset.getOrPut(row) {
readOffsets(rowOffset)
}
val dataOffset = columnOffsets[column]
val dataSize = columnOffsets[column + 1] - dataOffset
val result = ByteArray(dataSize)
buffer.position = rowOffset + dataOffset
buffer.get(result, 0, dataSize)
return result
}
}
class IrMultiArrayFileReader(file: File) : IrMultiArrayReader(ReadBuffer.WeakFileBuffer(file.javaFile()))
class IrMultiArrayMemoryReader(bytes: ByteArray) : IrMultiArrayReader(ReadBuffer.MemoryBuffer(bytes))
abstract class IrMultiTableReader(private val buffer: ReadBuffer, private val keyReader: ReadBuffer.() -> K) {
private val indexToOffset: IntArray
private val indexToIndexMap = mutableMapOf>>()
private fun readOffsets(position: Int): IntArray {
buffer.position = position
val count = buffer.int
val result = IntArray(count + 1)
result[0] = 4 * (count + 1)
for (i in 0 until count) {
val size = buffer.int
result[i + 1] = result[i] + size
}
return result
}
init {
indexToOffset = readOffsets(0)
}
private fun readIndexMap(position: Int): Map> {
buffer.position = position
val result = mutableMapOf>()
val count = buffer.int
for (i in 0 until count) {
val key = keyReader(buffer)
val offset = buffer.int
val size = buffer.int
result[key] = offset to size
}
return result
}
fun tableItemBytes(idx: Int): ByteArray {
val rowOffset = indexToOffset[idx]
val nextOffset = indexToOffset[idx + 1]
val size = nextOffset - rowOffset
val result = ByteArray(size)
buffer.position = rowOffset
buffer.get(result, 0, size)
return result
}
fun tableItemBytes(row: Int, id: K): ByteArray {
val rowOffset = indexToOffset[row]
val indexToMap = indexToIndexMap.getOrPut(row) {
readIndexMap(rowOffset)
}
val coordinates = indexToMap[id] ?: error("No coordinates found for $id")
val offset = coordinates.first
val size = coordinates.second
val result = ByteArray(size)
buffer.position = rowOffset + offset
buffer.get(result, 0, size)
return result
}
}
abstract class IrTableReader(private val buffer: ReadBuffer, keyReader: ReadBuffer.() -> K) {
private val indexToOffset = mutableMapOf>()
init {
val count = buffer.int
for (i in 0 until count) {
val key = keyReader(buffer)
val offset = buffer.int
val size = buffer.int
indexToOffset[key] = offset to size
}
}
fun tableItemBytes(id: K): ByteArray {
val coordinates = indexToOffset[id] ?: error("No coordinates found for $id")
val offset = coordinates.first
val size = coordinates.second
val result = ByteArray(size)
buffer.position = offset
buffer.get(result, 0, size)
return result
}
}
val ByteArray.buffer: ByteBuffer get() = ByteBuffer.wrap(this)
fun File.javaFile(): java.io.File = java.io.File(path)
class IndexIrTableFileReader(file: File) : IrTableReader(ReadBuffer.WeakFileBuffer(file.javaFile()), { long })
class IndexIrTableMemoryReader(bytes: ByteArray) : IrTableReader(ReadBuffer.MemoryBuffer(bytes), { long })
data class DeclarationId(val id: Int)
class DeclarationIrTableFileReader(file: File) :
IrTableReader(ReadBuffer.WeakFileBuffer(file.javaFile()), { DeclarationId(int) })
class DeclarationIrTableMemoryReader(bytes: ByteArray) :
IrTableReader(ReadBuffer.MemoryBuffer(bytes), { DeclarationId(int) })
class DeclarationIrMultiTableFileReader(file: File) :
IrMultiTableReader(ReadBuffer.WeakFileBuffer(file.javaFile()), { DeclarationId(int) })
class DeclarationIrMultiTableMemoryReader(bytes: ByteArray) :
IrMultiTableReader(ReadBuffer.MemoryBuffer(bytes), { DeclarationId(int) })
fun IrArrayReader.toArray(): Array = Array(this.entryCount()) { i -> this.tableItemBytes(i) }