Files
codegraph/__tests__/fixtures/kernel-parity/torture.scala
T
bdd687b49f feat(kernel): R7b Scala walker — scala module, vendored-grammar-C master@0aca5d0a6f, scala default-routed (#1385)
R7b batch 4 #3 (docs/design/scala-kernel-port-checklist.md is the
authoritative quirk list). The third vendored-grammar-C language and the
biggest grammar in the tree (35MB parser.c): the vendored wasm is
tree-sitter/tree-sitter-scala master@0aca5d0a6f — a post-v0.26.0 generation
sync that is not a release (the 0.26.0 crate is 30 states BEHIND, so a
crate pin would be a silent downgrade). NO wasm change: production has
parsed with this exact revision since #91 — the kernel-grammar-parity row
(ABI 15, 26,650 states, 32 fields, id-by-id tables) is the whole alignment
proof.

Preserved bug-for-bug (all probe-pinned): the leak-through asymmetries —
extension methods mint NO nodes (first def's body calls leak to the
enclosing scope, later defs invisible, and the braced form resolves its
body field to the `{` TOKEN via first-match-wins field lookup → whole
extension invisible); anonymous `new T { … }` template_body members leak to
the enclosing scope (findAnonymousClassBody misses template_body); the
bodied-vs-bodiless class asymmetry (bodiless headers walk class_parameters
→ default-value calls emit FROM the class; bodied ones never see them) —
plus first-segment import names (`import com.example.C` → `com`), the
val/var hook keyed on the enclosing-definition NODE TYPE (object vals →
constants/value-ref targets, class/trait/enum/given vals → fields) with
consumed initializers, every def routed through extractMethod with the
top-level function fallback, nested defs in bodies minting NOTHING (the
inverse of kotlin) while body-local classes extract fully, curried
signatures keeping only the FIRST parameter list (type params win the
`parameters` field), enum cases positioned at the CASE node with invisible
params/extends tails, extends with-chains via scalaBaseTypeName,
`@deprecated(args)` decorates, the #750 capitalized-chain re-encode
(`WidgetS.create().render`), literal-receiver silence, static-member reads
AND writes, infix invisibility, `derives` silence, scaladoc retention with
the CRLF `\r` pin, full value-reference machinery (shadow prune, last-wins
same-name targets, `$X`/`${X}` interpolation reads), and SCALA_SPEC
fn-refs (bare ids + postfix eta unwrap + varinit, var-init non-capture).

Gates: parity sweeps first-run 0-diff on os-lib/cats/scala3-compiler-src/
scala3-library-src — 1,935 clean files byte-parity, deferrals 0/15/57/116
matching the survey's predictions exactly (scala-3's PHANTOM hasError
files — flag-true, zero ERROR nodes, capture-checking `^` — defer on the
FLAG); full-init dumps byte-identical ×3 (os-lib, cats, scala3 whole-repo
950,889 dump lines); kernel-scala-parity suite (9 fixtures + 9 in-memory
CRLF variants incl. Scala-3 indentation through the external scanner +
phantom/real-error defer pins + first-segment/namespace/value-ref pins);
full suite 2,669 green ×3 with CODEGRAPH_KERNEL_EXPECT=1
(kernel-scaffold's stays-wasm example moved scala → pascal).
DEFAULT_ROUTED += scala (19 langs).

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
2026-07-20 19:02:52 -05:00

178 lines
3.9 KiB
Scala

package com.example.torture
import com.example.other.OtherClass
import com.example.multi.{Alpha, Beta}
import com.example.wild._
import com.example.star.*
import com.example.alias.{LongName => Short}
/** Scaladoc for topLevel — kept? */
def topLevel(a: Int): WidgetS = new WidgetS(a)
// line one
// line two
def lineDoc(): Int = 1
def curried(a: Int)(b: String)(implicit ord: Ordering[Int]): Int = a
def genericDef[A: Numeric, B <: BoundT](x: A): B = ???
def inferredRet(a: Int) = a + 1
def unitRet(): Unit = ()
def genericLeak[T](t: T): T = t
def qualRet(w: WidgetS): com.example.other.Remote = ???
private def privTop(): Int = 1
@main def entry(): Unit = topLevel(1)
@deprecated("gone", "1.0") def old(): Int = 0
val topVal: Int = 3
var topVar = 4
lazy val topLazy = compute()
val (tupA, tupB) = (1, 2)
val Some(extracted) = Option(9)
val SHARED_TABLE: Map[String, Int] = Map.empty
val topInit = WidgetS.create()
class WidgetS(val size: Int, label: String = defaultLabel()) extends BaseW(size) with Drawable with Ordered[WidgetS] {
val cachedName: String = "w"
var mutable = 0
private val secret = 3
@volatile var annotatedField: Int = 0
def this() = this(0, "d")
def render(): RenderResult = {
val local = helperR(size)
Registry.register(this)
new RenderResult(local)
}
def +(other: WidgetS): WidgetS = new WidgetS(size + other.size)
def compare(that: WidgetS): Int = size - that.size
@inline def fast(): Int = 1
protected def hook(): Unit = ()
}
object WidgetS {
val DEFAULT_SIZE = 10
def create(): WidgetS = new WidgetS(DEFAULT_SIZE, "c")
def readDefault(): Int = DEFAULT_SIZE + 1
}
case class DataS(x: Int, y: String = mkY())
case object SingletonS extends MarkerT
abstract class AbsS {
def abstractM(): Int
def concrete(): Int = abstractM() + 1
}
trait Drawable {
def draw(): Unit
def area(): Double = 0.0
val traitVal: Int = 7
}
sealed trait Shape
object Circle extends Shape
class Square extends Shape
trait MarkerT
class DelegatedImpl(d: Drawable) extends Drawable {
def draw(): Unit = d.draw()
}
enum Http {
case Ok, NotFound
case Custom(code: Int)
def describe(): String = s"code"
}
enum Planet(mass: Double) {
case Earth extends Planet(5.9)
case Mars extends Planet(0.6)
}
given intOrd: Ordering[WidgetS] = new Ordering[WidgetS] {
def compare(a: WidgetS, b: WidgetS): Int = a.size - b.size
}
given String = "anon"
extension (s: String)
def doubleUp: String = concat(s, s)
def tripleUp: String = concat(s, concat(s, s))
extension [A](xs: List[A]) def secondOpt: Option[A] = xs.drop(1).headOption
implicit class RichIntS(val i: Int) {
def twice: Int = i * 2
}
type WidgetList = List[WidgetS]
opaque type Meters = Double
object CallSites {
def run(w: WidgetS): Unit = {
helper(1)
w.render()
WidgetS(1)
WidgetS.create().render()
lowerFactory().chain()
a.b.method3()
this.mine()
super.hashCode()
"lit".toUpperCase()
5.toString()
genericCall[Int](1)
val n2 = new Ordering[Int] { def compare(p: Int, q: Int): Int = p - q }
val s1 = s"plain $topVal and ${w.render()} end"
val e1 = registerCb(handler _)
val e2 = handler _
registerCb(handler)
val r1 = list map transform
val r2 = 1 :: rest
w match {
case ws: WidgetS => use(ws)
case _ => ()
}
for { x <- xs; y <- ys if y > 0 } yield combineXY(x, y)
}
def mine(): Int = 1
def handler(): Unit = ()
def localHost(): Int = {
def innerFn(k: Int): Int = k * 2
val lam = (q: Int) => q + 1
class LocalClass { def lm(): Int = 3 }
object LocalObj { def om(): Int = 4 }
innerFn(lam(1)) + helperCall()
}
}
object StaticReads {
def reads(): Unit = {
val c1 = Registry.count
val c2 = Http.Ok
val c3 = com.example.Fq.CONST_READ
Registry.count = 5
process(Registry.count)
Registry.register(null)
}
}
package object utilpkg {
def pkgHelper(): Int = 1
val pkgShared = 2
}