fix(swift): a call through a prefix operator, try or await keeps its callee and receiver (#2686)

tree-sitter-swift binds a prefix operator to the leftmost operand:
`!isReady()` parses as `(!isReady)()`, and `!store.contains(id)` as
`(!store).contains(id)`. `try` and `await` before a chain bind to the part
before its last call: `try! Decoder().decode(d)` parses as
`(try! Decoder()).decode(d)`. Both engines read the callee or receiver node
as written, so the call was named `!isReady`, which never resolves, or it
lost its receiver and name-matched whichever `contains` or `decode` came
first; a type path behind a `!` lost its path too.

Both walkers now strip these wrappers (a prefix operator other than an
implicit member's `.`, `try` and `await`) off a call's callee and receiver.
They read a receiver chain's text from its innermost wrapped operand on, for
the chained-call encoding and the type-path receiver, and look through a
prefix operator for the type a member read references: `!Config.shared.isOn`
references `Config`. An operator applied to a parenthesized value, `!(x)` or
`-(a + b)`, parses as a call of the operator and now emits no call.

swift-wrapped-call-receivers.test.ts checks the edges, and
TortureWrappedCalls.swift pins both engines' refs.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

CHANGELOG.md

@@ -201,6 +201,7 @@ and adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 - In JavaScript and TypeScript projects, a folder named `build` inside `src/` is now indexed for its TypeScript, JSX, Vue, Svelte and Astro files, so a feature kept there, like the `src/build/` pages of luci-go's milo, shows up in `codegraph_explore` and the routes that lazily load its pages link to them. Before, every folder named `build` was skipped as build output. The JavaScript, declaration and other files such a folder holds are still left out, since a build may have written them, and so is every `build` folder outside `src/`.
 - On Windows, a Swift call written after `try!`, like `try! Message2(data: data)` or `try! Settings.Defaults.load()`, now links to what it calls, as it already did on macOS and Linux. Before, the `!` was read as a logical not, so the call linked to nothing, and a call made through a type lost the type it was made on. Re-index Swift projects on Windows after upgrading.
 - In JavaScript and TypeScript, a barrel's `export { A, B as C } from './x'` now links each name it passes on to what `./x` exports, following barrels that pass it on in turn. Before, each name was looked up by itself and could link to a same-named symbol elsewhere in the project, such as another folder's `Provider`, and a name passed on from a package, like `export { debounce } from 'lodash'`, could link to a project function of that name. Re-index JavaScript and TypeScript projects after upgrading.
+- In Swift, a call written after `!` or another prefix operator, or chained after `try` or `await`, now links to what it calls. `if !isReady()` links to `isReady`, `!store.contains(id)` and `try! JSONDecoder().decode(…)` link to the method of the type they're called on rather than to whichever `contains` or `decode` came first, and `!Settings.Defaults.isOn()` lands on the type it names. Re-index Swift projects after upgrading.
 
 ## [1.6.2] - 2026-10-03
 

__tests__/fixtures/kernel-parity/TortureWrappedCalls.swift

@@ -0,0 +1,49 @@
+// Calls whose callee or receiver the grammar wraps. tree-sitter-swift binds a
+// prefix operator to the leftmost operand, so `!isReady()` parses as
+// `(!isReady)()` and `!store.contains(x)` as `(!store).contains(x)`; `try` and
+// `await` before a chain bind to its first call, so `try! Decoder().decode(d)`
+// parses as `(try! Decoder()).decode(d)`. None of them changes what is called.
+// An operator applied to a parenthesized value parses as a call of the
+// operator: `!(x)` calls `!` (a project may declare `prefix func !`), and
+// `-(x)` has no callee node at all.
+import Foundation
+
+let globalFlag = !Config.isEnabled()
+
+final class Screen {
+    static let ready = !Config.shared.isReady()
+    let store = Store()
+    var negated: Bool = !Store.isEmpty()
+
+    func update(items: [Item], data: Data, id: Int) async throws -> Bool {
+        let a = !isReady()
+        let b = !store.contains(id)
+        let c = !Config.check()
+        let d = -abs(id)
+        let e = !Settings.Defaults.isOn()
+        let f = !Settings.Defaults.shared.isOn()
+        let g = !self.isCancelled
+        let h = !Config.shared.isEnabled
+        let i = ~Mask.all.rawValue
+        let j = try! Decoder().decode(Item.self, from: data)
+        let k = try Parser.make().parse(data)
+        let l = try! Parser.make().tokens().first()
+        let m = try await Client.shared.fetch(id).items()
+        let n = await loader.load().items()
+        let o = try !isValid(data)
+        let p: Result<Int, Error> = .success(id)
+        let q = !(items.isEmpty)
+        let r = -(id + 1)
+        let s = -(id)
+        if !items.contains(where: { $0.id == id }) {
+            return !store.remove(id)
+        }
+        guard !Task.isCancelled, !isReady() else { return false }
+        _ = (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s)
+        return !Config.check() && -Offset.zero() < 0
+    }
+
+    func isReady() -> Bool { true }
+    func isValid(_ d: Data) throws -> Bool { true }
+    var isCancelled: Bool { false }
+}

__tests__/kernel-swift-parity.test.ts

@@ -18,7 +18,9 @@
  * assignment-prune case the swift-nio sweep caught, SWIFT_SPEC fn-refs with
  * the label-forward skip and #selector shapes) and its CRLF variant (derived
  * in-memory — #1329); TortureTry.swift: calls written after `try!`, `try?`
- * and `try`, which the Windows kernels' grammar build misparsed.
+ * and `try`, which the Windows kernels' grammar build misparsed;
+ * TortureWrappedCalls.swift: calls through a prefix operator, `try` or
+ * `await`, which the grammar wraps around the callee or receiver.
  *
  * The full-repo sweep lives in scripts/kernel-parity.mjs (Alamofire/vapor/
  * swift-nio, --max-deferral 0.3 — swift error incidence is structurally
@@ -172,6 +174,54 @@ describe.skipIf(!kernelBuilt)('kernel Swift extraction parity', () => {
     expect(refs.filter((r) => tryBangLines.has(r.line) && r.referenceName.includes('!'))).toEqual([]);
   });
 
+  // A call the grammar wraps. A prefix operator binds to the leftmost operand
+  // (`!isReady()` parses as `(!isReady)()`, `!store.contains(id)` as
+  // `(!store).contains(id)`), and `try`/`await` before a chain to the part
+  // before its last call (`try! Decoder().decode(d)` is
+  // `(try! Decoder()).decode(d)`). Both engines read through the wrappers; an
+  // implicit member (`.success(x)`) keeps its dot. An operator applied to a
+  // parenthesized value parses as a call of the operator: `!(x)` stays a call
+  // of `!`, and `-(x)`, which has no callee node, is no call (its argument
+  // text used to be read as one: `-(id)` called `id`).
+  it('a call through a prefix operator, try or await keeps its name and receiver, LF and CRLF', () => {
+    const source = fs.readFileSync(path.join(FIXTURE_DIR, 'TortureWrappedCalls.swift'), 'utf8');
+    assertParity('fixtures/TortureWrappedCalls.swift', source, 5);
+    assertParity('fixtures/TortureWrappedCalls.swift (crlf)', source.replace(/(?<!\r)\n/g, '\r\n'), 5);
+
+    process.env.CODEGRAPH_KERNEL_LANGS = 'all';
+    const refs = tryKernelExtract('fixtures/TortureWrappedCalls.swift', source, 'swift')!.unresolvedReferences;
+    const lines = source.split(/\r?\n/);
+    // The `kind` refs on the first line containing `text`, by name.
+    const on = (text: string, kind: 'calls' | 'references'): string[] => {
+      const i = lines.findIndex((l) => l.includes(text));
+      expect(i, `fixture line "${text}"`).toBeGreaterThanOrEqual(0);
+      return refs.filter((r) => r.line === i + 1 && r.referenceKind === kind).map((r) => r.referenceName).sort();
+    };
+    expect(on('let a = !isReady()', 'calls')).toEqual(['isReady']);
+    expect(on('let b = !store.contains(id)', 'calls')).toEqual(['store.contains']);
+    expect(on('let c = !Config.check()', 'calls')).toEqual(['Config.check']);
+    expect(on('let d = -abs(id)', 'calls')).toEqual(['abs']);
+    expect(on('let e = !Settings.Defaults.isOn()', 'calls')).toEqual(['Settings.Defaults.isOn']);
+    expect(on('let e = !Settings.Defaults.isOn()', 'references')).toEqual(['Settings']);
+    expect(on('let h = !Config.shared.isEnabled', 'references')).toEqual(['Config']);
+    expect(on('let i = ~Mask.all.rawValue', 'references')).toEqual(['Mask']);
+    expect(on('var negated: Bool = !Store.isEmpty()', 'calls')).toEqual(['Store.isEmpty']);
+    expect(on('let j = try! Decoder()', 'calls')).toEqual(['Decoder', 'Decoder().decode']);
+    expect(on('let k = try Parser.make()', 'calls')).toEqual(['Parser.make', 'Parser.make().parse']);
+    expect(on('let l = try! Parser.make().tokens()', 'calls'))
+      .toEqual(['Parser.make', 'Parser.make().tokens', 'Parser.make().tokens().first']);
+    expect(on('let o = try !isValid(data)', 'calls')).toEqual(['isValid']);
+    expect(on('let q = !(items.isEmpty)', 'calls')).toEqual(['!']);
+    expect(on('let r = -(id + 1)', 'calls')).toEqual([]);
+    expect(on('let s = -(id)', 'calls')).toEqual([]);
+    expect(on('return !store.remove(id)', 'calls')).toEqual(['store.remove']);
+    expect(on('guard !Task.isCancelled', 'calls')).toEqual(['isReady']);
+    expect(on('guard !Task.isCancelled', 'references')).toEqual(['Task']);
+    // Unchanged: an implicit member keeps its dot, a lowercase chain stays bare.
+    expect(on('let p: Result<Int, Error> = .success(id)', 'calls')).toEqual(['.success']);
+    expect(on('let n = await loader.load().items()', 'calls')).toEqual(['items', 'loader.load']);
+  });
+
   it('files with parse errors defer to the wasm extractor (recovery is encoding-dependent)', () => {
     // A NEW-only regression construct (`#if` between enum cases — the swift
     // checklist's grammar-bump delta 5) — errors on the 0.7.3 grammar.

__tests__/swift-wrapped-call-receivers.test.ts

@@ -0,0 +1,126 @@
+/**
+ * A Swift call keeps its name and receiver through a prefix operator, `try`
+ * and `await`.
+ *
+ * tree-sitter-swift binds a prefix operator to the leftmost operand:
+ * `!isReady()` parses as `(!isReady)()` and `!store.contains(id)` as
+ * `(!store).contains(id)`. `try` and `await` before a chain bind to the part
+ * before its last call: `try! Reader().read(s)` is `(try! Reader()).read(s)`.
+ * The call came out named `!isReady`, which links nothing, or lost its
+ * receiver and name-matched whichever `contains` came first. Every target
+ * here has a namesake on another type, so a guess can't pass.
+ */
+import { describe, it, expect, afterAll } from 'vitest';
+import * as fs from 'fs';
+import * as os from 'os';
+import * as path from 'path';
+import { CodeGraph } from '../src';
+
+const roots: string[] = [];
+afterAll(() => {
+  for (const r of roots.splice(0)) fs.rmSync(r, { recursive: true, force: true });
+});
+
+const FILES: Record<string, string> = {
+  'Sources/App/Store.swift': `final class Store {
+    func contains(_ id: Int) -> Bool { false }
+}
+final class Bag {
+    func contains(_ id: Int) -> Bool { true }
+}
+`,
+  'Sources/App/Config.swift': `enum Config {
+    static func check() -> Bool { true }
+    static func offset() -> Int { 1 }
+}
+enum Audit {
+    static func check() -> Bool { false }
+    static func offset() -> Int { 2 }
+}
+`,
+  'Sources/App/Settings.swift': `enum Settings {
+    enum Defaults {
+        static func isOn() -> Bool { true }
+    }
+}
+enum Flags {
+    enum Defaults {
+        static func isOn() -> Bool { false }
+    }
+}
+`,
+  'Sources/App/Parser.swift': `final class Parser {
+    static func make() -> Parser { Parser() }
+    func parse(_ s: String) throws -> Int { 0 }
+}
+final class Lexer {
+    func parse(_ s: String) throws -> Int { 1 }
+}
+final class Reader {
+    func read(_ s: String) throws -> Int { 0 }
+}
+final class Tape {
+    func read(_ s: String) throws -> Int { 1 }
+}
+final class Loader {
+    static func shared() -> Loader { Loader() }
+    func fetch(_ s: String) async throws -> Int { 0 }
+}
+final class Cache {
+    func fetch(_ s: String) async throws -> Int { 1 }
+}
+`,
+  'Sources/App/Screen.swift': `final class Screen {
+    let store = Store()
+    func isReady() -> Bool { true }
+    func one() -> Bool { !isReady() }
+    func two(_ id: Int) -> Bool { !store.contains(id) }
+    func three() -> Bool { !Config.check() }
+    func four() -> Int { -Config.offset() }
+    func five() -> Bool { !Settings.Defaults.isOn() }
+    func six(_ s: String) throws -> Int { try Parser.make().parse(s) }
+    func seven(_ s: String) -> Int { try! Reader().read(s) }
+    func eight(_ s: String) async throws -> Int { try await Loader.shared().fetch(s) }
+    func nine() -> Bool { !(isReady()) }
+}
+`,
+};
+
+describe('Swift: a call through a prefix operator, try or await', () => {
+  it('keeps its name and receiver', async () => {
+    const root = fs.mkdtempSync(path.join(os.tmpdir(), 'cg-swift-wrapped-'));
+    roots.push(root);
+    for (const [rel, content] of Object.entries(FILES)) {
+      fs.mkdirSync(path.dirname(path.join(root, rel)), { recursive: true });
+      fs.writeFileSync(path.join(root, rel), content);
+    }
+    const cg = await CodeGraph.init(root, { index: true });
+    try {
+      const reached = (caller: string): string[] => {
+        const from = cg.getNodesByName(caller).find((n) => n.kind === 'method');
+        expect(from, caller).toBeDefined();
+        return cg
+          .getOutgoingEdgesFrom([from!.id], ['calls', 'instantiates'])
+          .map((e) => cg.getNode(e.target))
+          .filter((n) => n && n.language === 'swift')
+          .map((n) => n!.qualifiedName)
+          .sort();
+      };
+      // `!isReady()` was a call of `!isReady`.
+      expect(reached('one')).toEqual(['Screen::isReady']);
+      // Through the receiver's type, not the first `contains`/`check`/`isOn`.
+      expect(reached('two')).toEqual(['Store::contains']);
+      expect(reached('three')).toEqual(['Config::check']);
+      expect(reached('four')).toEqual(['Config::offset']);
+      expect(reached('five')).toEqual(['Settings::Defaults::isOn']);
+      // A chain after `try`, `try!` and `try await`: on what the first call returns.
+      expect(reached('six')).toEqual(['Parser::make', 'Parser::parse']);
+      expect(reached('seven')).toEqual(['Reader', 'Reader::read']);
+      expect(reached('eight')).toEqual(['Loader::fetch', 'Loader::shared']);
+      // A negated parenthesized call reaches the call inside.
+      expect(reached('nine')).toEqual(['Screen::isReady']);
+    } finally {
+      cg.close();
+    }
+  });
+});

codegraph-kernel/src/swift.rs

@@ -128,6 +128,57 @@ fn is_type_path(s: &str) -> bool {
     segments >= 2
 }
 
+/// isSwiftCallWrapper (tree-sitter.ts): a wrapper that leaves a call's target
+/// the same — `try`/`await`, which before a chain bind to the part before its
+/// last call (`try! A().b()` is `(try! A()).b()`), or a prefix operator, which
+/// binds to the leftmost operand (`!isReady()` is `(!isReady)()`). An implicit
+/// member's leading `.` (`.success(x)`) is part of the name.
+fn is_call_wrapper(node: Node, src: &str) -> bool {
+    match node.kind() {
+        "try_expression" | "await_expression" => true,
+        "prefix_expression" => !src[node.byte_range()].starts_with('.'),
+        _ => false,
+    }
+}
+
+/// swiftWrappedOperand: the operand a call wrapper wraps.
+fn wrapped_operand<'t>(node: Node<'t>) -> Option<Node<'t>> {
+    node.child_by_field_name(if node.kind() == "prefix_expression" { "target" } else { "expr" })
+}
+
+/// peelSwiftCallWrappers: strip call wrappers off a callee or receiver.
+fn peel_call_wrappers<'t>(node: Node<'t>, src: &str) -> Node<'t> {
+    let mut cur = node;
+    while is_call_wrapper(cur, src) {
+        match wrapped_operand(cur) {
+            Some(inner) => cur = inner,
+            None => break,
+        }
+    }
+    cur
+}
+
+/// swiftUnwrappedText: a receiver's text from its innermost wrapped operand
+/// on — the wrappers sit on the chain's left edge, so `!Settings.Defaults`
+/// reads `Settings.Defaults` and `try! Foo.make().bar` reads `Foo.make().bar`.
+fn unwrapped_text<'s>(node: Node, src: &'s str) -> &'s str {
+    let mut start = node.start_byte();
+    let mut cur = Some(node);
+    while let Some(n) = cur {
+        if is_call_wrapper(n, src) {
+            cur = wrapped_operand(n);
+            if let Some(inner) = cur {
+                start = inner.start_byte();
+            }
+        } else if matches!(n.kind(), "navigation_expression" | "call_expression") {
+            cur = n.named_child(0);
+        } else {
+            break;
+        }
+    }
+    &src[start..node.end_byte()]
+}
+
 struct Scope {
     row: u32,
     kind: &'static str,
@@ -1023,6 +1074,13 @@ impl<'t> Walker<'t> {
             .child_by_field_name("function")
             .or_else(|| node.named_child(0));
         let Some(func) = func else { return };
+        // `-(a + b)`: an operator token applied to a parenthesized value leaves
+        // the call with no callee node, only its arguments (tree-sitter.ts).
+        // `!(x)` keeps its `bang` callee: a project may declare `prefix func !`.
+        if func.kind() == "call_suffix" {
+            return;
+        }
+        let func = peel_call_wrappers(func, self.src);
         let mut callee_name = String::new();
 
         if func.kind() == "navigation_expression" {
@@ -1043,11 +1101,14 @@ impl<'t> Walker<'t> {
                 });
             if let Some(property) = property {
                 let method_name = self.text(property);
+                // Through a prefix operator, `try` and `await`:
+                // `(!store).contains(x)`, `(try! A()).b()`.
                 let receiver = func
                     .child_by_field_name("object")
                     .or_else(|| func.child_by_field_name("operand"))
                     .or_else(|| func.child_by_field_name("argument"))
-                    .or_else(|| func.named_child(0));
+                    .or_else(|| func.named_child(0))
+                    .map(|r| peel_call_wrappers(r, self.src));
                 if let Some(r) = receiver {
                     if is_literal_receiver(r.kind()) {
                         return; // `"lit".upper()` / `5.times()` — nothing
@@ -1066,9 +1127,11 @@ impl<'t> Walker<'t> {
                 } else if receiver.map(|r| r.kind() == "call_expression").unwrap_or(false) {
                     // #750 swift re-encode: innerNav = receiver.namedChild(0),
                     // ws-stripped; capitalized chains only.
+                    // Without a wrapper on its left edge
+                    // (`try! Foo.make().bar().baz()`).
                     let inner = receiver.unwrap().named_child(0);
                     let inner_callee =
-                        inner.map(|n| strip_js_ws(self.text(n))).unwrap_or_default();
+                        inner.map(|n| strip_js_ws(unwrapped_text(n, self.src))).unwrap_or_default();
                     let reencode = inner_callee
                         .as_bytes()
                         .first()
@@ -1081,11 +1144,12 @@ impl<'t> Walker<'t> {
                     };
                 } else if let Some(path) = receiver
                     .filter(|r| r.kind() == "navigation_expression")
-                    .map(|r| strip_js_ws(self.text(r)))
+                    .map(|r| strip_js_ws(unwrapped_text(r, self.src)))
                     .filter(|p| is_type_path(p))
                 {
                     // A type path, `API.PackageController.GetRoute.query(on:)`:
-                    // keep it for the resolver (tree-sitter.ts SWIFT_TYPE_PATH_RECEIVER).
+                    // keep it for the resolver (tree-sitter.ts SWIFT_TYPE_PATH_RECEIVER),
+                    // without a prefix operator on its head (`!Settings.Defaults.isOn()`).
                     callee_name = format!("{path}.{method_name}");
                 } else {
                     // self_expression / super_expression / instance nav /
@@ -1138,6 +1202,9 @@ impl<'t> Walker<'t> {
             .or_else(|| node.child_by_field_name("scope"))
             .or_else(|| node.named_child(0));
         let Some(recv) = recv else { return };
+        // A prefix operator binds to the head: `!Config.shared.isOn` is
+        // `(!Config).shared.isOn` (tree-sitter.ts).
+        let recv = peel_call_wrappers(recv, self.src);
         if matches!(
             recv.kind(),
             "identifier" | "type_identifier" | "simple_identifier" | "name" | "scoped_type_identifier"

src/extraction/tree-sitter.ts

@@ -455,6 +455,57 @@ const THIS_FIELD_PROPERTY_TYPES = new Set(['property_identifier', 'private_prope
 /** A Swift receiver that is a path of types, `API.PackageController.GetRoute` — two segments or more, each capitalized. */
 const SWIFT_TYPE_PATH_RECEIVER = /^(?!Self\.)[A-Z]\w*(?:\.[A-Z]\w*)+$/;
 
+/**
+ * Swift wrappers that leave a call's target the same. tree-sitter-swift binds
+ * a prefix operator to the leftmost operand, so `!isReady()` parses as
+ * `(!isReady)()` and `!store.contains(x)` as `(!store).contains(x)`; and
+ * `try`/`await` before a chain bind to the part before its last call, so
+ * `try! A().b()` parses as `(try! A()).b()`. An implicit member's leading `.`
+ * (`.success(x)`) is part of the name, not a wrapper. Mirrored in the kernel's
+ * swift.rs.
+ */
+function isSwiftCallWrapper(node: SyntaxNode, source: string): boolean {
+  if (node.type === 'try_expression' || node.type === 'await_expression') return true;
+  return node.type === 'prefix_expression' && !getNodeText(node, source).startsWith('.');
+}
+
+/** The operand a {@link isSwiftCallWrapper} wraps. */
+function swiftWrappedOperand(node: SyntaxNode): SyntaxNode | null {
+  return getChildByField(node, node.type === 'prefix_expression' ? 'target' : 'expr');
+}
+
+/** Strip {@link isSwiftCallWrapper} wrappers off a Swift callee or receiver. */
+function peelSwiftCallWrappers(node: SyntaxNode, source: string): SyntaxNode {
+  let cur = node;
+  while (isSwiftCallWrapper(cur, source)) {
+    const inner = swiftWrappedOperand(cur);
+    if (!inner) break;
+    cur = inner;
+  }
+  return cur;
+}
+
+/**
+ * A Swift receiver's text from its innermost wrapped operand on: the wrappers
+ * sit on the chain's left edge, so `!Settings.Defaults` reads
+ * `Settings.Defaults` and `try! Foo.make().bar` reads `Foo.make().bar`.
+ */
+function swiftUnwrappedText(node: SyntaxNode, source: string): string {
+  let start = node.startIndex;
+  let cur: SyntaxNode | null = node;
+  while (cur) {
+    if (isSwiftCallWrapper(cur, source)) {
+      cur = swiftWrappedOperand(cur);
+      if (cur) start = cur.startIndex;
+    } else if (cur.type === 'navigation_expression' || cur.type === 'call_expression') {
+      cur = cur.namedChild(0);
+    } else {
+      break;
+    }
+  }
+  return source.substring(start, node.endIndex);
+}
+
 /**
  * Identifier-rooted member chains have no inferred property type (#1566),
  * including host API chains (#1707). Keep the existing `window.MyNamespace`
@@ -5347,7 +5398,17 @@ export class TreeSitterExtractor {
         }
       }
     } else {
-      const func = getChildByField(node, 'function') || node.namedChild(0);
+      let func = getChildByField(node, 'function') || node.namedChild(0);
+
+      if (func && this.language === 'swift') {
+        // `-(a + b)`: an operator token applied to a parenthesized value
+        // leaves the call with no callee node, only its arguments — which
+        // must not be read as a callee name. (`!(x)` keeps its `bang` callee:
+        // a project may declare a `prefix func !` for its own types.)
+        // Mirrored in the kernel's extract_call (swift.rs).
+        if (func.type === 'call_suffix') return;
+        func = peelSwiftCallWrappers(func, this.source);
+      }
 
       // C++ explicit operator call `a.operator+(b)` / `p->operator+(b)` (#1247):
       // tree-sitter-cpp can't parse an operator_name in field position, so the
@@ -5427,10 +5488,13 @@ export class TreeSitterExtractor {
             // TS/JS: look through wrappers that keep the receiver the same
             // object (`(x).m()`, `x!.m()`, `(x as T).m()`, `(await f()).m()`),
             // so the branches below see the identifier / call / chain the
-            // call is really made on.
+            // call is really made on. Swift: through a prefix operator, `try`
+            // and `await` (`(!store).contains(x)`, `(try! A()).b()`).
             const receiver = rawReceiver && TS_JS_CHAIN_LANGUAGES.has(this.language)
               ? peelTsJsReceiver(rawReceiver)
-              : rawReceiver;
+              : rawReceiver && this.language === 'swift'
+                ? peelSwiftCallWrappers(rawReceiver, this.source)
+                : rawReceiver;
             // A LITERAL receiver — `", ".join(...)`, `"x".toUpperCase()`,
             // `5.times`, `[].concat(...)` — calls a builtin of the literal's
             // type, never a project symbol. The bare-name fallback below let
@@ -5506,7 +5570,12 @@ export class TreeSitterExtractor {
                 // call_expression's first named child (a navigation_expression
                 // `Foo.getInstance`, or a bare identifier for a free/constructor call).
                 const innerNav = receiver.namedChild(0);
-                innerCallee = innerNav ? getNodeText(innerNav, this.source).replace(/\s+/g, '') : '';
+                // Swift: without a `try`/`await`/prefix operator on its left
+                // edge (`try! Foo.make().bar().baz()`).
+                const innerText = !innerNav ? ''
+                  : this.language === 'swift' ? swiftUnwrappedText(innerNav, this.source)
+                  : getNodeText(innerNav, this.source);
+                innerCallee = innerText.replace(/\s+/g, '');
                 // Only re-encode a CLASS / companion-factory / constructor chain,
                 // whose receiver chain starts with a capitalized type
                 // (`Foo.getInstance().bar()`, `Foo().bar()`). An instance chain
@@ -5541,7 +5610,7 @@ export class TreeSitterExtractor {
               this.language === 'swift' &&
               receiver &&
               receiver.type === 'navigation_expression' &&
-              SWIFT_TYPE_PATH_RECEIVER.test(getNodeText(receiver, this.source).replace(/\s+/g, ''))
+              SWIFT_TYPE_PATH_RECEIVER.test(swiftUnwrappedText(receiver, this.source).replace(/\s+/g, ''))
             ) {
               // Swift call through a type path — `API.PackageController.GetRoute.query(on:)`,
               // on one line or split before the `.query`. Keep the path: the
@@ -5549,9 +5618,11 @@ export class TreeSitterExtractor {
               // type's `query` came first (every route in a Vapor app has one).
               // The resolver finds the member on the type the path names, or
               // leaves the call unresolved. An instance chain (`self.store.load()`,
-              // `viewModel.state.reset()`) is not a type path and stays bare.
+              // `viewModel.state.reset()`) is not a type path and stays bare. A
-              // Mirrored in the kernel's extract_call (swift.rs).
+              // prefix operator on the path's head is not part of it
-              calleeName = `${getNodeText(receiver, this.source).replace(/\s+/g, '')}.${methodName}`;
+              // (`!Settings.Defaults.isOn()`). Mirrored in the kernel's
+              // extract_call (swift.rs).
+              calleeName = `${swiftUnwrappedText(receiver, this.source).replace(/\s+/g, '')}.${methodName}`;
             } else if (
               this.language === 'cfscript' &&
               receiver &&
@@ -6035,12 +6106,15 @@ export class TreeSitterExtractor {
     // The receiver must be a SIMPLE capitalized identifier — `Type.X`, not the
     // nested `a.B.c` (whose own head member-access is visited separately) nor a
     // lowercase `obj.field` / `pkg.func`.
-    const recv =
+    const rawRecv =
       getChildByField(node, 'object') ??
       getChildByField(node, 'expression') ??
       getChildByField(node, 'scope') ??
       node.namedChild(0);
-    if (!recv) return;
+    if (!rawRecv) return;
+    // Swift binds a prefix operator to the head: `!Config.shared.isOn` is
+    // `(!Config).shared.isOn`. Mirrored in the kernel (swift.rs).
+    const recv = this.language === 'swift' ? peelSwiftCallWrappers(rawRecv, this.source) : rawRecv;
     const t = recv.type;
     if (
       t === 'identifier' || t === 'type_identifier' || t === 'simple_identifier' ||