Open-source multiplayer game server compatible with the RuneScape client
https://www.openrs2.org/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
58 lines
2.0 KiB
58 lines
2.0 KiB
package dev.openrs2.deob.transform
|
|
|
|
import dev.openrs2.asm.MemberDesc
|
|
import dev.openrs2.asm.classpath.ClassPath
|
|
import dev.openrs2.asm.classpath.Library
|
|
import dev.openrs2.asm.transform.Transformer
|
|
import org.objectweb.asm.Opcodes
|
|
import org.objectweb.asm.tree.ClassNode
|
|
import org.objectweb.asm.tree.FieldInsnNode
|
|
import org.objectweb.asm.tree.FieldNode
|
|
import javax.inject.Singleton
|
|
|
|
@Singleton
|
|
class FieldOrderTransformer : Transformer() {
|
|
override fun transformClass(classPath: ClassPath, library: Library, clazz: ClassNode): Boolean {
|
|
sortFields(clazz, CONSTRUCTOR, Opcodes.PUTFIELD)
|
|
sortFields(clazz, STATIC_CONSTRUCTOR, Opcodes.PUTSTATIC)
|
|
return false
|
|
}
|
|
|
|
private companion object {
|
|
private const val CONSTRUCTOR = "<init>"
|
|
private const val STATIC_CONSTRUCTOR = "<clinit>"
|
|
private val STATIC_COMPARATOR = Comparator<FieldNode> { a, b ->
|
|
val aStatic = a.access and Opcodes.ACC_STATIC != 0
|
|
val bStatic = b.access and Opcodes.ACC_STATIC != 0
|
|
when {
|
|
aStatic && !bStatic -> -1
|
|
!aStatic && bStatic -> 1
|
|
else -> 0
|
|
}
|
|
}
|
|
|
|
private fun sortFields(clazz: ClassNode, ctorName: String, opcode: Int) {
|
|
val ctor = clazz.methods.find { it.name == ctorName } ?: return
|
|
|
|
val fields = mutableMapOf<MemberDesc, Int>()
|
|
var index = 0
|
|
for (insn in ctor.instructions) {
|
|
if (insn.opcode != opcode) {
|
|
continue
|
|
}
|
|
|
|
val putfield = insn as FieldInsnNode
|
|
if (putfield.owner != clazz.name) {
|
|
continue
|
|
}
|
|
|
|
val desc = MemberDesc(putfield)
|
|
if (!fields.containsKey(desc)) {
|
|
fields[desc] = index++
|
|
}
|
|
}
|
|
|
|
clazz.fields.sortWith(STATIC_COMPARATOR.thenBy { fields.getOrDefault(MemberDesc(it), -1) })
|
|
}
|
|
}
|
|
}
|
|
|