Files
codegraph/__tests__/fixtures/kernel-parity/torture.kt
T
45a53eb5b5 feat(kernel): R7b Kotlin walker — kotlin module, vendored-grammar-C build, kotlin default-routed (#1382)
Sixth R7b port — the T1½ batch finale. Checklist-first recipe
(docs/design/kotlin-kernel-port-checklist.md, 1,121 lines, dist-extractor
ground truth); parity passed FIRST RUN on all three repos.

THE NOVEL MECHANISM — vendored-grammar-C (the §4 tracker's prescription,
first use): the crates.io tree-sitter-kotlin 0.3.8 pins `tree-sitter >= 0.21,
< 0.23` (the kernel links 0.25) and tree-sitter-kotlin-ng is a DIFFERENT
grammar (8 fields vs 0, renamed kinds — extractor-breaking), so no crate dep
is possible. The fwcd 0.3.8 tag's sha-matched parser.c + scanner.c are
vendored into codegraph-kernel/grammars/kotlin and compiled by build.rs (cc),
exposed via tree-sitter-language::LanguageFn. The wasm re-vendor is
behavior-NEUTRAL (0 CST/error disagreements across 1,984 gate-repo files;
old-vs-new full-init dumps byte-identical ×3) — a reproducibility re-vendor,
ABI stays 14.

Walker firsts: extension-function receivers (getReceiverType →
`WidgetK::extend` QN OVERRIDE with no package prefix, the qualified-receiver
`com::qext` first-segment bug, and the owner-contains fallback that excludes
`interface` kinds and is source-order dependent) and extractModifiers
(expect/actual platform modifiers → the node DECORATORS wire field on every
created node — the KMP synthesizer's feed, incl. `actual typealias`).
Preserved bug-for-bug: the FIELD_COUNT-0 dead cluster (no signatures, ZERO
type-annotation refs), hook-consumed property initializers emitting nothing
(incl. `by lazy {}`), the bodiless-vs-bodied class header asymmetry, enum-
entry bodies being invisible, KDoc never a docstring AND chain-breaking,
comment-gluing into import/package extents, `@Anno(args)` emitting nothing
while `@Marker` decorates, zero instantiates refs, the paren-then-lambda
`trailing()` garbage callee, text-includes visibility/suspend false
positives, and the packaged-file value-ref target drop. The fun-interface
misparse-recovery hook is DEFER-SHIELDED (every such file has_error) and
deliberately not ported. The swift-sweep lesson pre-applied: the shared
`assignment` shadow-prune case is implemented alongside the
property_declaration case.

Gates: sweeps 0-diff okio 299/322, okhttp 531/580, kotlinx.coroutines
1031/1082 (deferrals exactly the predicted 23/49/51 — both-arm grammar
reality incl. PHANTOM hasError files with complete CSTs; the kernel trusts
the flag); full-init dumps byte-identical ×3 (46.5k/108.9k/92.3k lines); KMP
expect/actual synthesis IDENTICAL across arms (412 edges on
kotlinx.coroutines — the tracker's KMP validation); kernel-kotlin-parity
suite (torture reflowed off the phantom shapes + .kts script + CRLF variants
+ fun-interface and phantom defer pins) + kotlin grammar-parity row (the
C-build ↔ wasm table identity proof); full suite 2,633 green ×2 under
CODEGRAPH_KERNEL_EXPECT=1. DEFAULT_ROUTED += kotlin (15 langs).

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
2026-07-20 17:33:18 -05:00

268 lines
5.2 KiB
Kotlin

/** KDoc for the file's package. */
package com.example.torture
import com.example.other.OtherClass
import com.example.util.helper
import com.example.wild.*
import com.example.alias.LongName as Short
// line comment run 1
// line comment run 2
fun topLevel(x: Int, s: String): WidgetK {
val local = x + 1
return WidgetK(local)
}
/** KDoc on extension fn. */
fun WidgetK.extend(n: Int): Int {
render()
return n
}
fun <T> List<T>.genericExt(): T = first()
fun com.example.Qualified.qext() {}
suspend fun suspender(): Unit { helper() }
private internal fun visFn() {}
fun inferred() = helper()
fun nullableRet(): WidgetK? = null
fun lambdaRet(): (Int) -> Unit = { }
expect fun platformThing(): Int
actual fun actualThing(): Int = 1
tailrec fun tailer(n: Int): Int = if (n <= 0) 0 else tailer(n - 1)
infix fun Int.pow(e: Int): Int = this
operator fun WidgetK.plus(o: WidgetK): WidgetK = this
val topVal: Int = 3
var topVar = "s"
const val TOP_CONST = 99
val topDelegated by lazy { WidgetK(1) }
val (destA, destB) = makePair()
val withGetter: Int
get() = 42
class WidgetK(val size: Int, private var name: String = defaultName()) {
val area: Int = size * size
var label: String? = null
val computed: Int
get() = size * 2
init {
val initLocal = 5
register(initLocal)
}
constructor(s: String) : this(s.length) {
log(s)
}
fun render(): Unit {
draw(size)
}
fun chainInner(): WidgetK = this
companion object {
val SHARED = WidgetK(0)
const val COMPANION_CONST = 7
fun create(): WidgetK = WidgetK(1)
}
companion object Named { }
}
data class DataK(val a: Int, val b: String)
abstract class AbstractK {
abstract fun impl(): Int
}
open class OpenBase(n: Int) {
open fun over() {}
}
class SubK(n: Int) : OpenBase(n), Drawable, Comparable<SubK> {
override fun over() {}
override fun compareTo(other: SubK): Int = 0
override fun draw() {}
}
class QualifiedSuper : com.example.deep.RemoteBase() { }
class DelegatedImpl(d: Drawable) : Drawable by d
interface Drawable {
fun draw()
fun outline(): Int = 1
val prop: Int get() = 2
}
sealed class SealedOp {
object Add : SealedOp()
data class Mul(val f: Int) : SealedOp()
}
sealed interface SealedIface
enum class Color {
RED, GREEN, BLUE
}
enum class Http(val code: Int) {
OK(200) {
override fun label(): String = "ok"
},
ERR(500) {
override fun label(): String = "err"
};
abstract fun label(): String
fun common(): Int = code
companion object {
fun of(c: Int): Http = OK
}
}
object Registry {
val instances = mutableListOf<WidgetK>()
var count = 0
const val REG_CONST = 1
fun register(w: WidgetK) { instances.add(w) }
}
annotation class MyMarker(val why: String = "")
@MyMarker
class Annotated {
@JvmStatic
fun jvmStatic() {}
@Deprecated("gone", ReplaceWith("new"))
fun old() {}
@field:JvmField
val fielded: Int = 1
@get:MyMarker
val got: Int = 2
}
typealias Handler = (Int) -> Unit
typealias WidgetList = List<WidgetK>
expect class PlatformFile {
fun path(): String
}
actual class ActualFile {
actual fun path(): String = "/"
}
actual typealias PlatformClock = java.time.Clock
fun caller() {
val w = WidgetK(1)
w.render()
this.toString()
super.hashCode()
Registry.register(w)
Registry.count
Color.RED
com.example.Fq.CONST_READ
WidgetK.create().render()
Foo.getInstance().bar()
lowerFactory().chain()
w.chainInner().render()
"literal".uppercase()
5.toString()
listOf(1, 2).size
w.label?.length
w.label!!.length
helper()
Short.static()
val fn: Handler = { i -> println(i) }
fn(3)
(fn)(4)
run { helper() }
listOf(1).forEach { it + 1 }
w.let { it.render() }
generic<Int>(1)
register(::topLevel)
register(OtherClass::handle)
register(w::render)
register(this::caller)
obtain(String::class)
val m = ::caller
val bound = w::render
val s = "interp $topVal and ${w.render()} end"
val multi = """raw $topVal"""
when (w.size) {
1 -> helper()
else -> draw(0)
}
if (topVal > 1) { helper() }
for (i in 1..3) { draw(i) }
fun localFn(): Int = 5
localFn()
class LocalClass {
fun lm() {}
}
object LocalObj {
fun om() {}
}
val anon = object : Drawable {
override fun draw() { helper() }
}
anon.draw()
label@ for (i in 1..2) { break@label }
val backtick = `weird name`()
}
fun `weird name`(): Int = 1
fun trailing(block: (Int) -> Int): Int = block(1)
fun useTrailing() {
trailing { it * 2 }
trailing() { it * 3 }
}
fun defaults(a: Int = compute(), b: String = "x") {}
fun varargFn(vararg xs: Int) {}
fun destructuringBody(p: Pair<Int, Int>) {
val (x, y) = p
draw(x + y)
}
fun assignRefs() {
Registry.count = 5
Registry.count += 1
}
fun nullish(x: WidgetK?) {
x?.render()
val l = x ?: WidgetK(0)
}
fun stringsEdge() {
val a = "quote \" and dollar ${'$'} done"
}
fun labeledLambda() {
listOf(1).forEach loop@{ if (it == 0) return@loop }
}
fun whereClause(): Int where Int : Comparable<Int> = 1