clang 18.0.0git
LocalizationChecker.cpp
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1//=- LocalizationChecker.cpp -------------------------------------*- C++ -*-==//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file defines a set of checks for localizability including:
10// 1) A checker that warns about uses of non-localized NSStrings passed to
11// UI methods expecting localized strings
12// 2) A syntactic checker that warns against the bad practice of
13// not including a comment in NSLocalizedString macros.
14//
15//===----------------------------------------------------------------------===//
16
17#include "clang/AST/Attr.h"
18#include "clang/AST/Decl.h"
19#include "clang/AST/DeclObjC.h"
22#include "clang/Lex/Lexer.h"
31#include "llvm/ADT/STLExtras.h"
32#include "llvm/Support/Unicode.h"
33#include <optional>
34
35using namespace clang;
36using namespace ento;
37
38namespace {
39struct LocalizedState {
40private:
41 enum Kind { NonLocalized, Localized } K;
42 LocalizedState(Kind InK) : K(InK) {}
43
44public:
45 bool isLocalized() const { return K == Localized; }
46 bool isNonLocalized() const { return K == NonLocalized; }
47
48 static LocalizedState getLocalized() { return LocalizedState(Localized); }
49 static LocalizedState getNonLocalized() {
50 return LocalizedState(NonLocalized);
51 }
52
53 // Overload the == operator
54 bool operator==(const LocalizedState &X) const { return K == X.K; }
55
56 // LLVMs equivalent of a hash function
57 void Profile(llvm::FoldingSetNodeID &ID) const { ID.AddInteger(K); }
58};
59
60class NonLocalizedStringChecker
61 : public Checker<check::PreCall, check::PostCall, check::PreObjCMessage,
62 check::PostObjCMessage,
63 check::PostStmt<ObjCStringLiteral>> {
64
65 mutable std::unique_ptr<BugType> BT;
66
67 // Methods that require a localized string
68 mutable llvm::DenseMap<const IdentifierInfo *,
69 llvm::DenseMap<Selector, uint8_t>> UIMethods;
70 // Methods that return a localized string
71 mutable llvm::SmallSet<std::pair<const IdentifierInfo *, Selector>, 12> LSM;
72 // C Functions that return a localized string
73 mutable llvm::SmallSet<const IdentifierInfo *, 5> LSF;
74
75 void initUIMethods(ASTContext &Ctx) const;
76 void initLocStringsMethods(ASTContext &Ctx) const;
77
78 bool hasNonLocalizedState(SVal S, CheckerContext &C) const;
79 bool hasLocalizedState(SVal S, CheckerContext &C) const;
80 void setNonLocalizedState(SVal S, CheckerContext &C) const;
81 void setLocalizedState(SVal S, CheckerContext &C) const;
82
83 bool isAnnotatedAsReturningLocalized(const Decl *D) const;
84 bool isAnnotatedAsTakingLocalized(const Decl *D) const;
85 void reportLocalizationError(SVal S, const CallEvent &M, CheckerContext &C,
86 int argumentNumber = 0) const;
87
88 int getLocalizedArgumentForSelector(const IdentifierInfo *Receiver,
89 Selector S) const;
90
91public:
92 NonLocalizedStringChecker();
93
94 // When this parameter is set to true, the checker assumes all
95 // methods that return NSStrings are unlocalized. Thus, more false
96 // positives will be reported.
97 bool IsAggressive = false;
98
99 void checkPreObjCMessage(const ObjCMethodCall &msg, CheckerContext &C) const;
100 void checkPostObjCMessage(const ObjCMethodCall &msg, CheckerContext &C) const;
101 void checkPostStmt(const ObjCStringLiteral *SL, CheckerContext &C) const;
102 void checkPreCall(const CallEvent &Call, CheckerContext &C) const;
103 void checkPostCall(const CallEvent &Call, CheckerContext &C) const;
104};
105
106} // end anonymous namespace
107
109 LocalizedState)
110
111NonLocalizedStringChecker::NonLocalizedStringChecker() {
112 BT.reset(new BugType(this, "Unlocalizable string",
113 "Localizability Issue (Apple)"));
114}
115
116namespace {
117class NonLocalizedStringBRVisitor final : public BugReporterVisitor {
118
119 const MemRegion *NonLocalizedString;
120 bool Satisfied;
121
122public:
123 NonLocalizedStringBRVisitor(const MemRegion *NonLocalizedString)
124 : NonLocalizedString(NonLocalizedString), Satisfied(false) {
125 assert(NonLocalizedString);
126 }
127
130 PathSensitiveBugReport &BR) override;
131
132 void Profile(llvm::FoldingSetNodeID &ID) const override {
133 ID.Add(NonLocalizedString);
134 }
135};
136} // End anonymous namespace.
137
138#define NEW_RECEIVER(receiver) \
139 llvm::DenseMap<Selector, uint8_t> &receiver##M = \
140 UIMethods.insert({&Ctx.Idents.get(#receiver), \
141 llvm::DenseMap<Selector, uint8_t>()}) \
142 .first->second;
143#define ADD_NULLARY_METHOD(receiver, method, argument) \
144 receiver##M.insert( \
145 {Ctx.Selectors.getNullarySelector(&Ctx.Idents.get(#method)), argument});
146#define ADD_UNARY_METHOD(receiver, method, argument) \
147 receiver##M.insert( \
148 {Ctx.Selectors.getUnarySelector(&Ctx.Idents.get(#method)), argument});
149#define ADD_METHOD(receiver, method_list, count, argument) \
150 receiver##M.insert({Ctx.Selectors.getSelector(count, method_list), argument});
151
152/// Initializes a list of methods that require a localized string
153/// Format: {"ClassName", {{"selectorName:", LocStringArg#}, ...}, ...}
154void NonLocalizedStringChecker::initUIMethods(ASTContext &Ctx) const {
155 if (!UIMethods.empty())
156 return;
157
158 // UI Methods
159 NEW_RECEIVER(UISearchDisplayController)
160 ADD_UNARY_METHOD(UISearchDisplayController, setSearchResultsTitle, 0)
161
162 NEW_RECEIVER(UITabBarItem)
163 IdentifierInfo *initWithTitleUITabBarItemTag[] = {
164 &Ctx.Idents.get("initWithTitle"), &Ctx.Idents.get("image"),
165 &Ctx.Idents.get("tag")};
166 ADD_METHOD(UITabBarItem, initWithTitleUITabBarItemTag, 3, 0)
167 IdentifierInfo *initWithTitleUITabBarItemImage[] = {
168 &Ctx.Idents.get("initWithTitle"), &Ctx.Idents.get("image"),
169 &Ctx.Idents.get("selectedImage")};
170 ADD_METHOD(UITabBarItem, initWithTitleUITabBarItemImage, 3, 0)
171
172 NEW_RECEIVER(NSDockTile)
173 ADD_UNARY_METHOD(NSDockTile, setBadgeLabel, 0)
174
175 NEW_RECEIVER(NSStatusItem)
176 ADD_UNARY_METHOD(NSStatusItem, setTitle, 0)
177 ADD_UNARY_METHOD(NSStatusItem, setToolTip, 0)
178
179 NEW_RECEIVER(UITableViewRowAction)
180 IdentifierInfo *rowActionWithStyleUITableViewRowAction[] = {
181 &Ctx.Idents.get("rowActionWithStyle"), &Ctx.Idents.get("title"),
182 &Ctx.Idents.get("handler")};
183 ADD_METHOD(UITableViewRowAction, rowActionWithStyleUITableViewRowAction, 3, 1)
184 ADD_UNARY_METHOD(UITableViewRowAction, setTitle, 0)
185
186 NEW_RECEIVER(NSBox)
187 ADD_UNARY_METHOD(NSBox, setTitle, 0)
188
189 NEW_RECEIVER(NSButton)
190 ADD_UNARY_METHOD(NSButton, setTitle, 0)
191 ADD_UNARY_METHOD(NSButton, setAlternateTitle, 0)
192 IdentifierInfo *radioButtonWithTitleNSButton[] = {
193 &Ctx.Idents.get("radioButtonWithTitle"), &Ctx.Idents.get("target"),
194 &Ctx.Idents.get("action")};
195 ADD_METHOD(NSButton, radioButtonWithTitleNSButton, 3, 0)
196 IdentifierInfo *buttonWithTitleNSButtonImage[] = {
197 &Ctx.Idents.get("buttonWithTitle"), &Ctx.Idents.get("image"),
198 &Ctx.Idents.get("target"), &Ctx.Idents.get("action")};
199 ADD_METHOD(NSButton, buttonWithTitleNSButtonImage, 4, 0)
200 IdentifierInfo *checkboxWithTitleNSButton[] = {
201 &Ctx.Idents.get("checkboxWithTitle"), &Ctx.Idents.get("target"),
202 &Ctx.Idents.get("action")};
203 ADD_METHOD(NSButton, checkboxWithTitleNSButton, 3, 0)
204 IdentifierInfo *buttonWithTitleNSButtonTarget[] = {
205 &Ctx.Idents.get("buttonWithTitle"), &Ctx.Idents.get("target"),
206 &Ctx.Idents.get("action")};
207 ADD_METHOD(NSButton, buttonWithTitleNSButtonTarget, 3, 0)
208
209 NEW_RECEIVER(NSSavePanel)
210 ADD_UNARY_METHOD(NSSavePanel, setPrompt, 0)
211 ADD_UNARY_METHOD(NSSavePanel, setTitle, 0)
212 ADD_UNARY_METHOD(NSSavePanel, setNameFieldLabel, 0)
213 ADD_UNARY_METHOD(NSSavePanel, setNameFieldStringValue, 0)
214 ADD_UNARY_METHOD(NSSavePanel, setMessage, 0)
215
216 NEW_RECEIVER(UIPrintInfo)
217 ADD_UNARY_METHOD(UIPrintInfo, setJobName, 0)
218
219 NEW_RECEIVER(NSTabViewItem)
220 ADD_UNARY_METHOD(NSTabViewItem, setLabel, 0)
221 ADD_UNARY_METHOD(NSTabViewItem, setToolTip, 0)
222
223 NEW_RECEIVER(NSBrowser)
224 IdentifierInfo *setTitleNSBrowser[] = {&Ctx.Idents.get("setTitle"),
225 &Ctx.Idents.get("ofColumn")};
226 ADD_METHOD(NSBrowser, setTitleNSBrowser, 2, 0)
227
228 NEW_RECEIVER(UIAccessibilityElement)
229 ADD_UNARY_METHOD(UIAccessibilityElement, setAccessibilityLabel, 0)
230 ADD_UNARY_METHOD(UIAccessibilityElement, setAccessibilityHint, 0)
231 ADD_UNARY_METHOD(UIAccessibilityElement, setAccessibilityValue, 0)
232
233 NEW_RECEIVER(UIAlertAction)
234 IdentifierInfo *actionWithTitleUIAlertAction[] = {
235 &Ctx.Idents.get("actionWithTitle"), &Ctx.Idents.get("style"),
236 &Ctx.Idents.get("handler")};
237 ADD_METHOD(UIAlertAction, actionWithTitleUIAlertAction, 3, 0)
238
239 NEW_RECEIVER(NSPopUpButton)
240 ADD_UNARY_METHOD(NSPopUpButton, addItemWithTitle, 0)
241 IdentifierInfo *insertItemWithTitleNSPopUpButton[] = {
242 &Ctx.Idents.get("insertItemWithTitle"), &Ctx.Idents.get("atIndex")};
243 ADD_METHOD(NSPopUpButton, insertItemWithTitleNSPopUpButton, 2, 0)
244 ADD_UNARY_METHOD(NSPopUpButton, removeItemWithTitle, 0)
245 ADD_UNARY_METHOD(NSPopUpButton, selectItemWithTitle, 0)
246 ADD_UNARY_METHOD(NSPopUpButton, setTitle, 0)
247
248 NEW_RECEIVER(NSTableViewRowAction)
249 IdentifierInfo *rowActionWithStyleNSTableViewRowAction[] = {
250 &Ctx.Idents.get("rowActionWithStyle"), &Ctx.Idents.get("title"),
251 &Ctx.Idents.get("handler")};
252 ADD_METHOD(NSTableViewRowAction, rowActionWithStyleNSTableViewRowAction, 3, 1)
253 ADD_UNARY_METHOD(NSTableViewRowAction, setTitle, 0)
254
255 NEW_RECEIVER(NSImage)
256 ADD_UNARY_METHOD(NSImage, setAccessibilityDescription, 0)
257
258 NEW_RECEIVER(NSUserActivity)
259 ADD_UNARY_METHOD(NSUserActivity, setTitle, 0)
260
261 NEW_RECEIVER(NSPathControlItem)
262 ADD_UNARY_METHOD(NSPathControlItem, setTitle, 0)
263
264 NEW_RECEIVER(NSCell)
265 ADD_UNARY_METHOD(NSCell, initTextCell, 0)
266 ADD_UNARY_METHOD(NSCell, setTitle, 0)
267 ADD_UNARY_METHOD(NSCell, setStringValue, 0)
268
269 NEW_RECEIVER(NSPathControl)
270 ADD_UNARY_METHOD(NSPathControl, setPlaceholderString, 0)
271
272 NEW_RECEIVER(UIAccessibility)
273 ADD_UNARY_METHOD(UIAccessibility, setAccessibilityLabel, 0)
274 ADD_UNARY_METHOD(UIAccessibility, setAccessibilityHint, 0)
275 ADD_UNARY_METHOD(UIAccessibility, setAccessibilityValue, 0)
276
277 NEW_RECEIVER(NSTableColumn)
278 ADD_UNARY_METHOD(NSTableColumn, setTitle, 0)
279 ADD_UNARY_METHOD(NSTableColumn, setHeaderToolTip, 0)
280
281 NEW_RECEIVER(NSSegmentedControl)
282 IdentifierInfo *setLabelNSSegmentedControl[] = {
283 &Ctx.Idents.get("setLabel"), &Ctx.Idents.get("forSegment")};
284 ADD_METHOD(NSSegmentedControl, setLabelNSSegmentedControl, 2, 0)
285 IdentifierInfo *setToolTipNSSegmentedControl[] = {
286 &Ctx.Idents.get("setToolTip"), &Ctx.Idents.get("forSegment")};
287 ADD_METHOD(NSSegmentedControl, setToolTipNSSegmentedControl, 2, 0)
288
289 NEW_RECEIVER(NSButtonCell)
290 ADD_UNARY_METHOD(NSButtonCell, setTitle, 0)
291 ADD_UNARY_METHOD(NSButtonCell, setAlternateTitle, 0)
292
293 NEW_RECEIVER(NSDatePickerCell)
294 ADD_UNARY_METHOD(NSDatePickerCell, initTextCell, 0)
295
296 NEW_RECEIVER(NSSliderCell)
297 ADD_UNARY_METHOD(NSSliderCell, setTitle, 0)
298
299 NEW_RECEIVER(NSControl)
300 ADD_UNARY_METHOD(NSControl, setStringValue, 0)
301
302 NEW_RECEIVER(NSAccessibility)
303 ADD_UNARY_METHOD(NSAccessibility, setAccessibilityValueDescription, 0)
304 ADD_UNARY_METHOD(NSAccessibility, setAccessibilityLabel, 0)
305 ADD_UNARY_METHOD(NSAccessibility, setAccessibilityTitle, 0)
306 ADD_UNARY_METHOD(NSAccessibility, setAccessibilityPlaceholderValue, 0)
307 ADD_UNARY_METHOD(NSAccessibility, setAccessibilityHelp, 0)
308
309 NEW_RECEIVER(NSMatrix)
310 IdentifierInfo *setToolTipNSMatrix[] = {&Ctx.Idents.get("setToolTip"),
311 &Ctx.Idents.get("forCell")};
312 ADD_METHOD(NSMatrix, setToolTipNSMatrix, 2, 0)
313
314 NEW_RECEIVER(NSPrintPanel)
315 ADD_UNARY_METHOD(NSPrintPanel, setDefaultButtonTitle, 0)
316
317 NEW_RECEIVER(UILocalNotification)
318 ADD_UNARY_METHOD(UILocalNotification, setAlertBody, 0)
319 ADD_UNARY_METHOD(UILocalNotification, setAlertAction, 0)
320 ADD_UNARY_METHOD(UILocalNotification, setAlertTitle, 0)
321
322 NEW_RECEIVER(NSSlider)
323 ADD_UNARY_METHOD(NSSlider, setTitle, 0)
324
325 NEW_RECEIVER(UIMenuItem)
326 IdentifierInfo *initWithTitleUIMenuItem[] = {&Ctx.Idents.get("initWithTitle"),
327 &Ctx.Idents.get("action")};
328 ADD_METHOD(UIMenuItem, initWithTitleUIMenuItem, 2, 0)
329 ADD_UNARY_METHOD(UIMenuItem, setTitle, 0)
330
331 NEW_RECEIVER(UIAlertController)
332 IdentifierInfo *alertControllerWithTitleUIAlertController[] = {
333 &Ctx.Idents.get("alertControllerWithTitle"), &Ctx.Idents.get("message"),
334 &Ctx.Idents.get("preferredStyle")};
335 ADD_METHOD(UIAlertController, alertControllerWithTitleUIAlertController, 3, 1)
336 ADD_UNARY_METHOD(UIAlertController, setTitle, 0)
337 ADD_UNARY_METHOD(UIAlertController, setMessage, 0)
338
339 NEW_RECEIVER(UIApplicationShortcutItem)
340 IdentifierInfo *initWithTypeUIApplicationShortcutItemIcon[] = {
341 &Ctx.Idents.get("initWithType"), &Ctx.Idents.get("localizedTitle"),
342 &Ctx.Idents.get("localizedSubtitle"), &Ctx.Idents.get("icon"),
343 &Ctx.Idents.get("userInfo")};
344 ADD_METHOD(UIApplicationShortcutItem,
345 initWithTypeUIApplicationShortcutItemIcon, 5, 1)
346 IdentifierInfo *initWithTypeUIApplicationShortcutItem[] = {
347 &Ctx.Idents.get("initWithType"), &Ctx.Idents.get("localizedTitle")};
348 ADD_METHOD(UIApplicationShortcutItem, initWithTypeUIApplicationShortcutItem,
349 2, 1)
350
351 NEW_RECEIVER(UIActionSheet)
352 IdentifierInfo *initWithTitleUIActionSheet[] = {
353 &Ctx.Idents.get("initWithTitle"), &Ctx.Idents.get("delegate"),
354 &Ctx.Idents.get("cancelButtonTitle"),
355 &Ctx.Idents.get("destructiveButtonTitle"),
356 &Ctx.Idents.get("otherButtonTitles")};
357 ADD_METHOD(UIActionSheet, initWithTitleUIActionSheet, 5, 0)
358 ADD_UNARY_METHOD(UIActionSheet, addButtonWithTitle, 0)
359 ADD_UNARY_METHOD(UIActionSheet, setTitle, 0)
360
361 NEW_RECEIVER(UIAccessibilityCustomAction)
362 IdentifierInfo *initWithNameUIAccessibilityCustomAction[] = {
363 &Ctx.Idents.get("initWithName"), &Ctx.Idents.get("target"),
364 &Ctx.Idents.get("selector")};
365 ADD_METHOD(UIAccessibilityCustomAction,
366 initWithNameUIAccessibilityCustomAction, 3, 0)
367 ADD_UNARY_METHOD(UIAccessibilityCustomAction, setName, 0)
368
369 NEW_RECEIVER(UISearchBar)
370 ADD_UNARY_METHOD(UISearchBar, setText, 0)
371 ADD_UNARY_METHOD(UISearchBar, setPrompt, 0)
372 ADD_UNARY_METHOD(UISearchBar, setPlaceholder, 0)
373
374 NEW_RECEIVER(UIBarItem)
375 ADD_UNARY_METHOD(UIBarItem, setTitle, 0)
376
377 NEW_RECEIVER(UITextView)
378 ADD_UNARY_METHOD(UITextView, setText, 0)
379
380 NEW_RECEIVER(NSView)
381 ADD_UNARY_METHOD(NSView, setToolTip, 0)
382
383 NEW_RECEIVER(NSTextField)
384 ADD_UNARY_METHOD(NSTextField, setPlaceholderString, 0)
385 ADD_UNARY_METHOD(NSTextField, textFieldWithString, 0)
386 ADD_UNARY_METHOD(NSTextField, wrappingLabelWithString, 0)
387 ADD_UNARY_METHOD(NSTextField, labelWithString, 0)
388
389 NEW_RECEIVER(NSAttributedString)
390 ADD_UNARY_METHOD(NSAttributedString, initWithString, 0)
391 IdentifierInfo *initWithStringNSAttributedString[] = {
392 &Ctx.Idents.get("initWithString"), &Ctx.Idents.get("attributes")};
393 ADD_METHOD(NSAttributedString, initWithStringNSAttributedString, 2, 0)
394
395 NEW_RECEIVER(NSText)
396 ADD_UNARY_METHOD(NSText, setString, 0)
397
398 NEW_RECEIVER(UIKeyCommand)
399 IdentifierInfo *keyCommandWithInputUIKeyCommand[] = {
400 &Ctx.Idents.get("keyCommandWithInput"), &Ctx.Idents.get("modifierFlags"),
401 &Ctx.Idents.get("action"), &Ctx.Idents.get("discoverabilityTitle")};
402 ADD_METHOD(UIKeyCommand, keyCommandWithInputUIKeyCommand, 4, 3)
403 ADD_UNARY_METHOD(UIKeyCommand, setDiscoverabilityTitle, 0)
404
405 NEW_RECEIVER(UILabel)
406 ADD_UNARY_METHOD(UILabel, setText, 0)
407
408 NEW_RECEIVER(NSAlert)
409 IdentifierInfo *alertWithMessageTextNSAlert[] = {
410 &Ctx.Idents.get("alertWithMessageText"), &Ctx.Idents.get("defaultButton"),
411 &Ctx.Idents.get("alternateButton"), &Ctx.Idents.get("otherButton"),
412 &Ctx.Idents.get("informativeTextWithFormat")};
413 ADD_METHOD(NSAlert, alertWithMessageTextNSAlert, 5, 0)
414 ADD_UNARY_METHOD(NSAlert, addButtonWithTitle, 0)
415 ADD_UNARY_METHOD(NSAlert, setMessageText, 0)
416 ADD_UNARY_METHOD(NSAlert, setInformativeText, 0)
417 ADD_UNARY_METHOD(NSAlert, setHelpAnchor, 0)
418
419 NEW_RECEIVER(UIMutableApplicationShortcutItem)
420 ADD_UNARY_METHOD(UIMutableApplicationShortcutItem, setLocalizedTitle, 0)
421 ADD_UNARY_METHOD(UIMutableApplicationShortcutItem, setLocalizedSubtitle, 0)
422
423 NEW_RECEIVER(UIButton)
424 IdentifierInfo *setTitleUIButton[] = {&Ctx.Idents.get("setTitle"),
425 &Ctx.Idents.get("forState")};
426 ADD_METHOD(UIButton, setTitleUIButton, 2, 0)
427
428 NEW_RECEIVER(NSWindow)
429 ADD_UNARY_METHOD(NSWindow, setTitle, 0)
430 IdentifierInfo *minFrameWidthWithTitleNSWindow[] = {
431 &Ctx.Idents.get("minFrameWidthWithTitle"), &Ctx.Idents.get("styleMask")};
432 ADD_METHOD(NSWindow, minFrameWidthWithTitleNSWindow, 2, 0)
433 ADD_UNARY_METHOD(NSWindow, setMiniwindowTitle, 0)
434
435 NEW_RECEIVER(NSPathCell)
436 ADD_UNARY_METHOD(NSPathCell, setPlaceholderString, 0)
437
438 NEW_RECEIVER(UIDocumentMenuViewController)
439 IdentifierInfo *addOptionWithTitleUIDocumentMenuViewController[] = {
440 &Ctx.Idents.get("addOptionWithTitle"), &Ctx.Idents.get("image"),
441 &Ctx.Idents.get("order"), &Ctx.Idents.get("handler")};
442 ADD_METHOD(UIDocumentMenuViewController,
443 addOptionWithTitleUIDocumentMenuViewController, 4, 0)
444
445 NEW_RECEIVER(UINavigationItem)
446 ADD_UNARY_METHOD(UINavigationItem, initWithTitle, 0)
447 ADD_UNARY_METHOD(UINavigationItem, setTitle, 0)
448 ADD_UNARY_METHOD(UINavigationItem, setPrompt, 0)
449
450 NEW_RECEIVER(UIAlertView)
451 IdentifierInfo *initWithTitleUIAlertView[] = {
452 &Ctx.Idents.get("initWithTitle"), &Ctx.Idents.get("message"),
453 &Ctx.Idents.get("delegate"), &Ctx.Idents.get("cancelButtonTitle"),
454 &Ctx.Idents.get("otherButtonTitles")};
455 ADD_METHOD(UIAlertView, initWithTitleUIAlertView, 5, 0)
456 ADD_UNARY_METHOD(UIAlertView, addButtonWithTitle, 0)
457 ADD_UNARY_METHOD(UIAlertView, setTitle, 0)
458 ADD_UNARY_METHOD(UIAlertView, setMessage, 0)
459
460 NEW_RECEIVER(NSFormCell)
461 ADD_UNARY_METHOD(NSFormCell, initTextCell, 0)
462 ADD_UNARY_METHOD(NSFormCell, setTitle, 0)
463 ADD_UNARY_METHOD(NSFormCell, setPlaceholderString, 0)
464
465 NEW_RECEIVER(NSUserNotification)
466 ADD_UNARY_METHOD(NSUserNotification, setTitle, 0)
467 ADD_UNARY_METHOD(NSUserNotification, setSubtitle, 0)
468 ADD_UNARY_METHOD(NSUserNotification, setInformativeText, 0)
469 ADD_UNARY_METHOD(NSUserNotification, setActionButtonTitle, 0)
470 ADD_UNARY_METHOD(NSUserNotification, setOtherButtonTitle, 0)
471 ADD_UNARY_METHOD(NSUserNotification, setResponsePlaceholder, 0)
472
473 NEW_RECEIVER(NSToolbarItem)
474 ADD_UNARY_METHOD(NSToolbarItem, setLabel, 0)
475 ADD_UNARY_METHOD(NSToolbarItem, setPaletteLabel, 0)
476 ADD_UNARY_METHOD(NSToolbarItem, setToolTip, 0)
477
478 NEW_RECEIVER(NSProgress)
479 ADD_UNARY_METHOD(NSProgress, setLocalizedDescription, 0)
480 ADD_UNARY_METHOD(NSProgress, setLocalizedAdditionalDescription, 0)
481
482 NEW_RECEIVER(NSSegmentedCell)
483 IdentifierInfo *setLabelNSSegmentedCell[] = {&Ctx.Idents.get("setLabel"),
484 &Ctx.Idents.get("forSegment")};
485 ADD_METHOD(NSSegmentedCell, setLabelNSSegmentedCell, 2, 0)
486 IdentifierInfo *setToolTipNSSegmentedCell[] = {&Ctx.Idents.get("setToolTip"),
487 &Ctx.Idents.get("forSegment")};
488 ADD_METHOD(NSSegmentedCell, setToolTipNSSegmentedCell, 2, 0)
489
490 NEW_RECEIVER(NSUndoManager)
491 ADD_UNARY_METHOD(NSUndoManager, setActionName, 0)
492 ADD_UNARY_METHOD(NSUndoManager, undoMenuTitleForUndoActionName, 0)
493 ADD_UNARY_METHOD(NSUndoManager, redoMenuTitleForUndoActionName, 0)
494
495 NEW_RECEIVER(NSMenuItem)
496 IdentifierInfo *initWithTitleNSMenuItem[] = {
497 &Ctx.Idents.get("initWithTitle"), &Ctx.Idents.get("action"),
498 &Ctx.Idents.get("keyEquivalent")};
499 ADD_METHOD(NSMenuItem, initWithTitleNSMenuItem, 3, 0)
500 ADD_UNARY_METHOD(NSMenuItem, setTitle, 0)
501 ADD_UNARY_METHOD(NSMenuItem, setToolTip, 0)
502
503 NEW_RECEIVER(NSPopUpButtonCell)
504 IdentifierInfo *initTextCellNSPopUpButtonCell[] = {
505 &Ctx.Idents.get("initTextCell"), &Ctx.Idents.get("pullsDown")};
506 ADD_METHOD(NSPopUpButtonCell, initTextCellNSPopUpButtonCell, 2, 0)
507 ADD_UNARY_METHOD(NSPopUpButtonCell, addItemWithTitle, 0)
508 IdentifierInfo *insertItemWithTitleNSPopUpButtonCell[] = {
509 &Ctx.Idents.get("insertItemWithTitle"), &Ctx.Idents.get("atIndex")};
510 ADD_METHOD(NSPopUpButtonCell, insertItemWithTitleNSPopUpButtonCell, 2, 0)
511 ADD_UNARY_METHOD(NSPopUpButtonCell, removeItemWithTitle, 0)
512 ADD_UNARY_METHOD(NSPopUpButtonCell, selectItemWithTitle, 0)
513 ADD_UNARY_METHOD(NSPopUpButtonCell, setTitle, 0)
514
515 NEW_RECEIVER(NSViewController)
516 ADD_UNARY_METHOD(NSViewController, setTitle, 0)
517
518 NEW_RECEIVER(NSMenu)
519 ADD_UNARY_METHOD(NSMenu, initWithTitle, 0)
520 IdentifierInfo *insertItemWithTitleNSMenu[] = {
521 &Ctx.Idents.get("insertItemWithTitle"), &Ctx.Idents.get("action"),
522 &Ctx.Idents.get("keyEquivalent"), &Ctx.Idents.get("atIndex")};
523 ADD_METHOD(NSMenu, insertItemWithTitleNSMenu, 4, 0)
524 IdentifierInfo *addItemWithTitleNSMenu[] = {
525 &Ctx.Idents.get("addItemWithTitle"), &Ctx.Idents.get("action"),
526 &Ctx.Idents.get("keyEquivalent")};
527 ADD_METHOD(NSMenu, addItemWithTitleNSMenu, 3, 0)
528 ADD_UNARY_METHOD(NSMenu, setTitle, 0)
529
530 NEW_RECEIVER(UIMutableUserNotificationAction)
531 ADD_UNARY_METHOD(UIMutableUserNotificationAction, setTitle, 0)
532
533 NEW_RECEIVER(NSForm)
534 ADD_UNARY_METHOD(NSForm, addEntry, 0)
535 IdentifierInfo *insertEntryNSForm[] = {&Ctx.Idents.get("insertEntry"),
536 &Ctx.Idents.get("atIndex")};
537 ADD_METHOD(NSForm, insertEntryNSForm, 2, 0)
538
539 NEW_RECEIVER(NSTextFieldCell)
540 ADD_UNARY_METHOD(NSTextFieldCell, setPlaceholderString, 0)
541
542 NEW_RECEIVER(NSUserNotificationAction)
543 IdentifierInfo *actionWithIdentifierNSUserNotificationAction[] = {
544 &Ctx.Idents.get("actionWithIdentifier"), &Ctx.Idents.get("title")};
545 ADD_METHOD(NSUserNotificationAction,
546 actionWithIdentifierNSUserNotificationAction, 2, 1)
547
548 NEW_RECEIVER(UITextField)
549 ADD_UNARY_METHOD(UITextField, setText, 0)
550 ADD_UNARY_METHOD(UITextField, setPlaceholder, 0)
551
552 NEW_RECEIVER(UIBarButtonItem)
553 IdentifierInfo *initWithTitleUIBarButtonItem[] = {
554 &Ctx.Idents.get("initWithTitle"), &Ctx.Idents.get("style"),
555 &Ctx.Idents.get("target"), &Ctx.Idents.get("action")};
556 ADD_METHOD(UIBarButtonItem, initWithTitleUIBarButtonItem, 4, 0)
557
558 NEW_RECEIVER(UIViewController)
559 ADD_UNARY_METHOD(UIViewController, setTitle, 0)
560
561 NEW_RECEIVER(UISegmentedControl)
562 IdentifierInfo *insertSegmentWithTitleUISegmentedControl[] = {
563 &Ctx.Idents.get("insertSegmentWithTitle"), &Ctx.Idents.get("atIndex"),
564 &Ctx.Idents.get("animated")};
565 ADD_METHOD(UISegmentedControl, insertSegmentWithTitleUISegmentedControl, 3, 0)
566 IdentifierInfo *setTitleUISegmentedControl[] = {
567 &Ctx.Idents.get("setTitle"), &Ctx.Idents.get("forSegmentAtIndex")};
568 ADD_METHOD(UISegmentedControl, setTitleUISegmentedControl, 2, 0)
569
570 NEW_RECEIVER(NSAccessibilityCustomRotorItemResult)
572 *initWithItemLoadingTokenNSAccessibilityCustomRotorItemResult[] = {
573 &Ctx.Idents.get("initWithItemLoadingToken"),
574 &Ctx.Idents.get("customLabel")};
575 ADD_METHOD(NSAccessibilityCustomRotorItemResult,
576 initWithItemLoadingTokenNSAccessibilityCustomRotorItemResult, 2, 1)
577 ADD_UNARY_METHOD(NSAccessibilityCustomRotorItemResult, setCustomLabel, 0)
578
579 NEW_RECEIVER(UIContextualAction)
580 IdentifierInfo *contextualActionWithStyleUIContextualAction[] = {
581 &Ctx.Idents.get("contextualActionWithStyle"), &Ctx.Idents.get("title"),
582 &Ctx.Idents.get("handler")};
583 ADD_METHOD(UIContextualAction, contextualActionWithStyleUIContextualAction, 3,
584 1)
585 ADD_UNARY_METHOD(UIContextualAction, setTitle, 0)
586
587 NEW_RECEIVER(NSAccessibilityCustomRotor)
588 IdentifierInfo *initWithLabelNSAccessibilityCustomRotor[] = {
589 &Ctx.Idents.get("initWithLabel"), &Ctx.Idents.get("itemSearchDelegate")};
590 ADD_METHOD(NSAccessibilityCustomRotor,
591 initWithLabelNSAccessibilityCustomRotor, 2, 0)
592 ADD_UNARY_METHOD(NSAccessibilityCustomRotor, setLabel, 0)
593
594 NEW_RECEIVER(NSWindowTab)
595 ADD_UNARY_METHOD(NSWindowTab, setTitle, 0)
596 ADD_UNARY_METHOD(NSWindowTab, setToolTip, 0)
597
598 NEW_RECEIVER(NSAccessibilityCustomAction)
599 IdentifierInfo *initWithNameNSAccessibilityCustomAction[] = {
600 &Ctx.Idents.get("initWithName"), &Ctx.Idents.get("handler")};
601 ADD_METHOD(NSAccessibilityCustomAction,
602 initWithNameNSAccessibilityCustomAction, 2, 0)
603 IdentifierInfo *initWithNameTargetNSAccessibilityCustomAction[] = {
604 &Ctx.Idents.get("initWithName"), &Ctx.Idents.get("target"),
605 &Ctx.Idents.get("selector")};
606 ADD_METHOD(NSAccessibilityCustomAction,
607 initWithNameTargetNSAccessibilityCustomAction, 3, 0)
608 ADD_UNARY_METHOD(NSAccessibilityCustomAction, setName, 0)
609}
610
611#define LSF_INSERT(function_name) LSF.insert(&Ctx.Idents.get(function_name));
612#define LSM_INSERT_NULLARY(receiver, method_name) \
613 LSM.insert({&Ctx.Idents.get(receiver), Ctx.Selectors.getNullarySelector( \
614 &Ctx.Idents.get(method_name))});
615#define LSM_INSERT_UNARY(receiver, method_name) \
616 LSM.insert({&Ctx.Idents.get(receiver), \
617 Ctx.Selectors.getUnarySelector(&Ctx.Idents.get(method_name))});
618#define LSM_INSERT_SELECTOR(receiver, method_list, arguments) \
619 LSM.insert({&Ctx.Idents.get(receiver), \
620 Ctx.Selectors.getSelector(arguments, method_list)});
621
622/// Initializes a list of methods and C functions that return a localized string
623void NonLocalizedStringChecker::initLocStringsMethods(ASTContext &Ctx) const {
624 if (!LSM.empty())
625 return;
626
627 IdentifierInfo *LocalizedStringMacro[] = {
628 &Ctx.Idents.get("localizedStringForKey"), &Ctx.Idents.get("value"),
629 &Ctx.Idents.get("table")};
630 LSM_INSERT_SELECTOR("NSBundle", LocalizedStringMacro, 3)
631 LSM_INSERT_UNARY("NSDateFormatter", "stringFromDate")
632 IdentifierInfo *LocalizedStringFromDate[] = {
633 &Ctx.Idents.get("localizedStringFromDate"), &Ctx.Idents.get("dateStyle"),
634 &Ctx.Idents.get("timeStyle")};
635 LSM_INSERT_SELECTOR("NSDateFormatter", LocalizedStringFromDate, 3)
636 LSM_INSERT_UNARY("NSNumberFormatter", "stringFromNumber")
637 LSM_INSERT_NULLARY("UITextField", "text")
638 LSM_INSERT_NULLARY("UITextView", "text")
639 LSM_INSERT_NULLARY("UILabel", "text")
640
641 LSF_INSERT("CFDateFormatterCreateStringWithDate");
642 LSF_INSERT("CFDateFormatterCreateStringWithAbsoluteTime");
643 LSF_INSERT("CFNumberFormatterCreateStringWithNumber");
644}
645
646/// Checks to see if the method / function declaration includes
647/// __attribute__((annotate("returns_localized_nsstring")))
648bool NonLocalizedStringChecker::isAnnotatedAsReturningLocalized(
649 const Decl *D) const {
650 if (!D)
651 return false;
652 return std::any_of(
653 D->specific_attr_begin<AnnotateAttr>(),
654 D->specific_attr_end<AnnotateAttr>(), [](const AnnotateAttr *Ann) {
655 return Ann->getAnnotation() == "returns_localized_nsstring";
656 });
657}
658
659/// Checks to see if the method / function declaration includes
660/// __attribute__((annotate("takes_localized_nsstring")))
661bool NonLocalizedStringChecker::isAnnotatedAsTakingLocalized(
662 const Decl *D) const {
663 if (!D)
664 return false;
665 return std::any_of(
666 D->specific_attr_begin<AnnotateAttr>(),
667 D->specific_attr_end<AnnotateAttr>(), [](const AnnotateAttr *Ann) {
668 return Ann->getAnnotation() == "takes_localized_nsstring";
669 });
670}
671
672/// Returns true if the given SVal is marked as Localized in the program state
673bool NonLocalizedStringChecker::hasLocalizedState(SVal S,
674 CheckerContext &C) const {
675 const MemRegion *mt = S.getAsRegion();
676 if (mt) {
677 const LocalizedState *LS = C.getState()->get<LocalizedMemMap>(mt);
678 if (LS && LS->isLocalized())
679 return true;
680 }
681 return false;
682}
683
684/// Returns true if the given SVal is marked as NonLocalized in the program
685/// state
686bool NonLocalizedStringChecker::hasNonLocalizedState(SVal S,
687 CheckerContext &C) const {
688 const MemRegion *mt = S.getAsRegion();
689 if (mt) {
690 const LocalizedState *LS = C.getState()->get<LocalizedMemMap>(mt);
691 if (LS && LS->isNonLocalized())
692 return true;
693 }
694 return false;
695}
696
697/// Marks the given SVal as Localized in the program state
698void NonLocalizedStringChecker::setLocalizedState(const SVal S,
699 CheckerContext &C) const {
700 const MemRegion *mt = S.getAsRegion();
701 if (mt) {
702 ProgramStateRef State =
703 C.getState()->set<LocalizedMemMap>(mt, LocalizedState::getLocalized());
704 C.addTransition(State);
705 }
706}
707
708/// Marks the given SVal as NonLocalized in the program state
709void NonLocalizedStringChecker::setNonLocalizedState(const SVal S,
710 CheckerContext &C) const {
711 const MemRegion *mt = S.getAsRegion();
712 if (mt) {
713 ProgramStateRef State = C.getState()->set<LocalizedMemMap>(
714 mt, LocalizedState::getNonLocalized());
715 C.addTransition(State);
716 }
717}
718
719
720static bool isDebuggingName(std::string name) {
721 return StringRef(name).lower().find("debug") != StringRef::npos;
722}
723
724/// Returns true when, heuristically, the analyzer may be analyzing debugging
725/// code. We use this to suppress localization diagnostics in un-localized user
726/// interfaces that are only used for debugging and are therefore not user
727/// facing.
729 const Decl *D = C.getCurrentAnalysisDeclContext()->getDecl();
730 if (!D)
731 return false;
732
733 if (auto *ND = dyn_cast<NamedDecl>(D)) {
734 if (isDebuggingName(ND->getNameAsString()))
735 return true;
736 }
737
738 const DeclContext *DC = D->getDeclContext();
739
740 if (auto *CD = dyn_cast<ObjCContainerDecl>(DC)) {
741 if (isDebuggingName(CD->getNameAsString()))
742 return true;
743 }
744
745 return false;
746}
747
748
749/// Reports a localization error for the passed in method call and SVal
750void NonLocalizedStringChecker::reportLocalizationError(
751 SVal S, const CallEvent &M, CheckerContext &C, int argumentNumber) const {
752
753 // Don't warn about localization errors in classes and methods that
754 // may be debug code.
756 return;
757
758 static CheckerProgramPointTag Tag("NonLocalizedStringChecker",
759 "UnlocalizedString");
760 ExplodedNode *ErrNode = C.addTransition(C.getState(), C.getPredecessor(), &Tag);
761
762 if (!ErrNode)
763 return;
764
765 // Generate the bug report.
766 auto R = std::make_unique<PathSensitiveBugReport>(
767 *BT, "User-facing text should use localized string macro", ErrNode);
768 if (argumentNumber) {
769 R->addRange(M.getArgExpr(argumentNumber - 1)->getSourceRange());
770 } else {
771 R->addRange(M.getSourceRange());
772 }
773 R->markInteresting(S);
774
775 const MemRegion *StringRegion = S.getAsRegion();
776 if (StringRegion)
777 R->addVisitor(std::make_unique<NonLocalizedStringBRVisitor>(StringRegion));
778
779 C.emitReport(std::move(R));
780}
781
782/// Returns the argument number requiring localized string if it exists
783/// otherwise, returns -1
784int NonLocalizedStringChecker::getLocalizedArgumentForSelector(
785 const IdentifierInfo *Receiver, Selector S) const {
786 auto method = UIMethods.find(Receiver);
787
788 if (method == UIMethods.end())
789 return -1;
790
791 auto argumentIterator = method->getSecond().find(S);
792
793 if (argumentIterator == method->getSecond().end())
794 return -1;
795
796 int argumentNumber = argumentIterator->getSecond();
797 return argumentNumber;
798}
799
800/// Check if the string being passed in has NonLocalized state
801void NonLocalizedStringChecker::checkPreObjCMessage(const ObjCMethodCall &msg,
802 CheckerContext &C) const {
803 initUIMethods(C.getASTContext());
804
805 const ObjCInterfaceDecl *OD = msg.getReceiverInterface();
806 if (!OD)
807 return;
808 const IdentifierInfo *odInfo = OD->getIdentifier();
809
810 Selector S = msg.getSelector();
811
812 std::string SelectorString = S.getAsString();
813 StringRef SelectorName = SelectorString;
814 assert(!SelectorName.empty());
815
816 if (odInfo->isStr("NSString")) {
817 // Handle the case where the receiver is an NSString
818 // These special NSString methods draw to the screen
819
820 if (!(SelectorName.startswith("drawAtPoint") ||
821 SelectorName.startswith("drawInRect") ||
822 SelectorName.startswith("drawWithRect")))
823 return;
824
825 SVal svTitle = msg.getReceiverSVal();
826
827 bool isNonLocalized = hasNonLocalizedState(svTitle, C);
828
829 if (isNonLocalized) {
830 reportLocalizationError(svTitle, msg, C);
831 }
832 }
833
834 int argumentNumber = getLocalizedArgumentForSelector(odInfo, S);
835 // Go up each hierarchy of superclasses and their protocols
836 while (argumentNumber < 0 && OD->getSuperClass() != nullptr) {
837 for (const auto *P : OD->all_referenced_protocols()) {
838 argumentNumber = getLocalizedArgumentForSelector(P->getIdentifier(), S);
839 if (argumentNumber >= 0)
840 break;
841 }
842 if (argumentNumber < 0) {
843 OD = OD->getSuperClass();
844 argumentNumber = getLocalizedArgumentForSelector(OD->getIdentifier(), S);
845 }
846 }
847
848 if (argumentNumber < 0) { // There was no match in UIMethods
849 if (const Decl *D = msg.getDecl()) {
850 if (const ObjCMethodDecl *OMD = dyn_cast_or_null<ObjCMethodDecl>(D)) {
851 for (auto [Idx, FormalParam] : llvm::enumerate(OMD->parameters())) {
852 if (isAnnotatedAsTakingLocalized(FormalParam)) {
853 argumentNumber = Idx;
854 break;
855 }
856 }
857 }
858 }
859 }
860
861 if (argumentNumber < 0) // Still no match
862 return;
863
864 SVal svTitle = msg.getArgSVal(argumentNumber);
865
866 if (const ObjCStringRegion *SR =
867 dyn_cast_or_null<ObjCStringRegion>(svTitle.getAsRegion())) {
868 StringRef stringValue =
869 SR->getObjCStringLiteral()->getString()->getString();
870 if ((stringValue.trim().size() == 0 && stringValue.size() > 0) ||
871 stringValue.empty())
872 return;
873 if (!IsAggressive && llvm::sys::unicode::columnWidthUTF8(stringValue) < 2)
874 return;
875 }
876
877 bool isNonLocalized = hasNonLocalizedState(svTitle, C);
878
879 if (isNonLocalized) {
880 reportLocalizationError(svTitle, msg, C, argumentNumber + 1);
881 }
882}
883
884void NonLocalizedStringChecker::checkPreCall(const CallEvent &Call,
885 CheckerContext &C) const {
886 const auto *FD = dyn_cast_or_null<FunctionDecl>(Call.getDecl());
887 if (!FD)
888 return;
889
890 auto formals = FD->parameters();
891 for (unsigned i = 0, ei = std::min(static_cast<unsigned>(formals.size()),
892 Call.getNumArgs()); i != ei; ++i) {
893 if (isAnnotatedAsTakingLocalized(formals[i])) {
894 auto actual = Call.getArgSVal(i);
895 if (hasNonLocalizedState(actual, C)) {
896 reportLocalizationError(actual, Call, C, i + 1);
897 }
898 }
899 }
900}
901
902static inline bool isNSStringType(QualType T, ASTContext &Ctx) {
903
905 if (!PT)
906 return false;
907
909 if (!Cls)
910 return false;
911
912 IdentifierInfo *ClsName = Cls->getIdentifier();
913
914 // FIXME: Should we walk the chain of classes?
915 return ClsName == &Ctx.Idents.get("NSString") ||
916 ClsName == &Ctx.Idents.get("NSMutableString");
917}
918
919/// Marks a string being returned by any call as localized
920/// if it is in LocStringFunctions (LSF) or the function is annotated.
921/// Otherwise, we mark it as NonLocalized (Aggressive) or
922/// NonLocalized only if it is not backed by a SymRegion (Non-Aggressive),
923/// basically leaving only string literals as NonLocalized.
924void NonLocalizedStringChecker::checkPostCall(const CallEvent &Call,
925 CheckerContext &C) const {
926 initLocStringsMethods(C.getASTContext());
927
928 if (!Call.getOriginExpr())
929 return;
930
931 // Anything that takes in a localized NSString as an argument
932 // and returns an NSString will be assumed to be returning a
933 // localized NSString. (Counter: Incorrectly combining two LocalizedStrings)
934 const QualType RT = Call.getResultType();
935 if (isNSStringType(RT, C.getASTContext())) {
936 for (unsigned i = 0; i < Call.getNumArgs(); ++i) {
937 SVal argValue = Call.getArgSVal(i);
938 if (hasLocalizedState(argValue, C)) {
939 SVal sv = Call.getReturnValue();
940 setLocalizedState(sv, C);
941 return;
942 }
943 }
944 }
945
946 const Decl *D = Call.getDecl();
947 if (!D)
948 return;
949
950 const IdentifierInfo *Identifier = Call.getCalleeIdentifier();
951
952 SVal sv = Call.getReturnValue();
953 if (isAnnotatedAsReturningLocalized(D) || LSF.contains(Identifier)) {
954 setLocalizedState(sv, C);
955 } else if (isNSStringType(RT, C.getASTContext()) &&
956 !hasLocalizedState(sv, C)) {
957 if (IsAggressive) {
958 setNonLocalizedState(sv, C);
959 } else {
960 const SymbolicRegion *SymReg =
961 dyn_cast_or_null<SymbolicRegion>(sv.getAsRegion());
962 if (!SymReg)
963 setNonLocalizedState(sv, C);
964 }
965 }
966}
967
968/// Marks a string being returned by an ObjC method as localized
969/// if it is in LocStringMethods or the method is annotated
970void NonLocalizedStringChecker::checkPostObjCMessage(const ObjCMethodCall &msg,
971 CheckerContext &C) const {
972 initLocStringsMethods(C.getASTContext());
973
974 if (!msg.isInstanceMessage())
975 return;
976
977 const ObjCInterfaceDecl *OD = msg.getReceiverInterface();
978 if (!OD)
979 return;
980 const IdentifierInfo *odInfo = OD->getIdentifier();
981
982 Selector S = msg.getSelector();
983 std::string SelectorName = S.getAsString();
984
985 std::pair<const IdentifierInfo *, Selector> MethodDescription = {odInfo, S};
986
987 if (LSM.count(MethodDescription) ||
988 isAnnotatedAsReturningLocalized(msg.getDecl())) {
989 SVal sv = msg.getReturnValue();
990 setLocalizedState(sv, C);
991 }
992}
993
994/// Marks all empty string literals as localized
995void NonLocalizedStringChecker::checkPostStmt(const ObjCStringLiteral *SL,
996 CheckerContext &C) const {
997 SVal sv = C.getSVal(SL);
998 setNonLocalizedState(sv, C);
999}
1000
1002NonLocalizedStringBRVisitor::VisitNode(const ExplodedNode *Succ,
1003 BugReporterContext &BRC,
1005 if (Satisfied)
1006 return nullptr;
1007
1008 std::optional<StmtPoint> Point = Succ->getLocation().getAs<StmtPoint>();
1009 if (!Point)
1010 return nullptr;
1011
1012 auto *LiteralExpr = dyn_cast<ObjCStringLiteral>(Point->getStmt());
1013 if (!LiteralExpr)
1014 return nullptr;
1015
1016 SVal LiteralSVal = Succ->getSVal(LiteralExpr);
1017 if (LiteralSVal.getAsRegion() != NonLocalizedString)
1018 return nullptr;
1019
1020 Satisfied = true;
1021
1024
1025 if (!L.isValid() || !L.asLocation().isValid())
1026 return nullptr;
1027
1028 auto Piece = std::make_shared<PathDiagnosticEventPiece>(
1029 L, "Non-localized string literal here");
1030 Piece->addRange(LiteralExpr->getSourceRange());
1031
1032 return std::move(Piece);
1033}
1034
1035namespace {
1036class EmptyLocalizationContextChecker
1037 : public Checker<check::ASTDecl<ObjCImplementationDecl>> {
1038
1039 // A helper class, which walks the AST
1040 class MethodCrawler : public ConstStmtVisitor<MethodCrawler> {
1041 const ObjCMethodDecl *MD;
1042 BugReporter &BR;
1043 AnalysisManager &Mgr;
1044 const CheckerBase *Checker;
1046
1047 public:
1048 MethodCrawler(const ObjCMethodDecl *InMD, BugReporter &InBR,
1049 const CheckerBase *Checker, AnalysisManager &InMgr,
1050 AnalysisDeclContext *InDCtx)
1051 : MD(InMD), BR(InBR), Mgr(InMgr), Checker(Checker), DCtx(InDCtx) {}
1052
1053 void VisitStmt(const Stmt *S) { VisitChildren(S); }
1054
1055 void VisitObjCMessageExpr(const ObjCMessageExpr *ME);
1056
1057 void reportEmptyContextError(const ObjCMessageExpr *M) const;
1058
1059 void VisitChildren(const Stmt *S) {
1060 for (const Stmt *Child : S->children()) {
1061 if (Child)
1062 this->Visit(Child);
1063 }
1064 }
1065 };
1066
1067public:
1068 void checkASTDecl(const ObjCImplementationDecl *D, AnalysisManager &Mgr,
1069 BugReporter &BR) const;
1070};
1071} // end anonymous namespace
1072
1073void EmptyLocalizationContextChecker::checkASTDecl(
1075 BugReporter &BR) const {
1076
1077 for (const ObjCMethodDecl *M : D->methods()) {
1079
1080 const Stmt *Body = M->getBody();
1081 if (!Body) {
1082 assert(M->isSynthesizedAccessorStub());
1083 continue;
1084 }
1085
1086 MethodCrawler MC(M->getCanonicalDecl(), BR, this, Mgr, DCtx);
1087 MC.VisitStmt(Body);
1088 }
1089}
1090
1091/// This check attempts to match these macros, assuming they are defined as
1092/// follows:
1093///
1094/// #define NSLocalizedString(key, comment) \
1095/// [[NSBundle mainBundle] localizedStringForKey:(key) value:@"" table:nil]
1096/// #define NSLocalizedStringFromTable(key, tbl, comment) \
1097/// [[NSBundle mainBundle] localizedStringForKey:(key) value:@"" table:(tbl)]
1098/// #define NSLocalizedStringFromTableInBundle(key, tbl, bundle, comment) \
1099/// [bundle localizedStringForKey:(key) value:@"" table:(tbl)]
1100/// #define NSLocalizedStringWithDefaultValue(key, tbl, bundle, val, comment)
1101///
1102/// We cannot use the path sensitive check because the macro argument we are
1103/// checking for (comment) is not used and thus not present in the AST,
1104/// so we use Lexer on the original macro call and retrieve the value of
1105/// the comment. If it's empty or nil, we raise a warning.
1106void EmptyLocalizationContextChecker::MethodCrawler::VisitObjCMessageExpr(
1107 const ObjCMessageExpr *ME) {
1108
1109 // FIXME: We may be able to use PPCallbacks to check for empty context
1110 // comments as part of preprocessing and avoid this re-lexing hack.
1111 const ObjCInterfaceDecl *OD = ME->getReceiverInterface();
1112 if (!OD)
1113 return;
1114
1115 const IdentifierInfo *odInfo = OD->getIdentifier();
1116
1117 if (!(odInfo->isStr("NSBundle") &&
1118 ME->getSelector().getAsString() ==
1119 "localizedStringForKey:value:table:")) {
1120 return;
1121 }
1122
1123 SourceRange R = ME->getSourceRange();
1124 if (!R.getBegin().isMacroID())
1125 return;
1126
1127 // getImmediateMacroCallerLoc gets the location of the immediate macro
1128 // caller, one level up the stack toward the initial macro typed into the
1129 // source, so SL should point to the NSLocalizedString macro.
1130 SourceLocation SL =
1132 std::pair<FileID, unsigned> SLInfo =
1134
1135 SrcMgr::SLocEntry SE = Mgr.getSourceManager().getSLocEntry(SLInfo.first);
1136
1137 // If NSLocalizedString macro is wrapped in another macro, we need to
1138 // unwrap the expansion until we get to the NSLocalizedStringMacro.
1139 while (SE.isExpansion()) {
1140 SL = SE.getExpansion().getSpellingLoc();
1141 SLInfo = Mgr.getSourceManager().getDecomposedLoc(SL);
1142 SE = Mgr.getSourceManager().getSLocEntry(SLInfo.first);
1143 }
1144
1145 std::optional<llvm::MemoryBufferRef> BF =
1146 Mgr.getSourceManager().getBufferOrNone(SLInfo.first, SL);
1147 if (!BF)
1148 return;
1149 LangOptions LangOpts;
1150 Lexer TheLexer(SL, LangOpts, BF->getBufferStart(),
1151 BF->getBufferStart() + SLInfo.second, BF->getBufferEnd());
1152
1153 Token I;
1154 Token Result; // This will hold the token just before the last ')'
1155 int p_count = 0; // This is for parenthesis matching
1156 while (!TheLexer.LexFromRawLexer(I)) {
1157 if (I.getKind() == tok::l_paren)
1158 ++p_count;
1159 if (I.getKind() == tok::r_paren) {
1160 if (p_count == 1)
1161 break;
1162 --p_count;
1163 }
1164 Result = I;
1165 }
1166
1167 if (isAnyIdentifier(Result.getKind())) {
1168 if (Result.getRawIdentifier().equals("nil")) {
1169 reportEmptyContextError(ME);
1170 return;
1171 }
1172 }
1173
1174 if (!isStringLiteral(Result.getKind()))
1175 return;
1176
1177 StringRef Comment =
1178 StringRef(Result.getLiteralData(), Result.getLength()).trim('"');
1179
1180 if ((Comment.trim().size() == 0 && Comment.size() > 0) || // Is Whitespace
1181 Comment.empty()) {
1182 reportEmptyContextError(ME);
1183 }
1184}
1185
1186void EmptyLocalizationContextChecker::MethodCrawler::reportEmptyContextError(
1187 const ObjCMessageExpr *ME) const {
1188 // Generate the bug report.
1189 BR.EmitBasicReport(MD, Checker, "Context Missing",
1190 "Localizability Issue (Apple)",
1191 "Localized string macro should include a non-empty "
1192 "comment for translators",
1194}
1195
1196namespace {
1197class PluralMisuseChecker : public Checker<check::ASTCodeBody> {
1198
1199 // A helper class, which walks the AST
1200 class MethodCrawler : public RecursiveASTVisitor<MethodCrawler> {
1201 BugReporter &BR;
1202 const CheckerBase *Checker;
1204
1205 // This functions like a stack. We push on any IfStmt or
1206 // ConditionalOperator that matches the condition
1207 // and pop it off when we leave that statement
1209 // This is true when we are the direct-child of a
1210 // matching statement
1211 bool InMatchingStatement = false;
1212
1213 public:
1214 explicit MethodCrawler(BugReporter &InBR, const CheckerBase *Checker,
1215 AnalysisDeclContext *InAC)
1216 : BR(InBR), Checker(Checker), AC(InAC) {}
1217
1218 bool VisitIfStmt(const IfStmt *I);
1219 bool EndVisitIfStmt(IfStmt *I);
1220 bool TraverseIfStmt(IfStmt *x);
1221 bool VisitConditionalOperator(const ConditionalOperator *C);
1222 bool TraverseConditionalOperator(ConditionalOperator *C);
1223 bool VisitCallExpr(const CallExpr *CE);
1224 bool VisitObjCMessageExpr(const ObjCMessageExpr *ME);
1225
1226 private:
1227 void reportPluralMisuseError(const Stmt *S) const;
1228 bool isCheckingPlurality(const Expr *E) const;
1229 };
1230
1231public:
1232 void checkASTCodeBody(const Decl *D, AnalysisManager &Mgr,
1233 BugReporter &BR) const {
1234 MethodCrawler Visitor(BR, this, Mgr.getAnalysisDeclContext(D));
1235 Visitor.TraverseDecl(const_cast<Decl *>(D));
1236 }
1237};
1238} // end anonymous namespace
1239
1240// Checks the condition of the IfStmt and returns true if one
1241// of the following heuristics are met:
1242// 1) The conidtion is a variable with "singular" or "plural" in the name
1243// 2) The condition is a binary operator with 1 or 2 on the right-hand side
1244bool PluralMisuseChecker::MethodCrawler::isCheckingPlurality(
1245 const Expr *Condition) const {
1246 const BinaryOperator *BO = nullptr;
1247 // Accounts for when a VarDecl represents a BinaryOperator
1248 if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(Condition)) {
1249 if (const VarDecl *VD = dyn_cast<VarDecl>(DRE->getDecl())) {
1250 const Expr *InitExpr = VD->getInit();
1251 if (InitExpr) {
1252 if (const BinaryOperator *B =
1253 dyn_cast<BinaryOperator>(InitExpr->IgnoreParenImpCasts())) {
1254 BO = B;
1255 }
1256 }
1257 if (VD->getName().lower().find("plural") != StringRef::npos ||
1258 VD->getName().lower().find("singular") != StringRef::npos) {
1259 return true;
1260 }
1261 }
1262 } else if (const BinaryOperator *B = dyn_cast<BinaryOperator>(Condition)) {
1263 BO = B;
1264 }
1265
1266 if (BO == nullptr)
1267 return false;
1268
1269 if (IntegerLiteral *IL = dyn_cast_or_null<IntegerLiteral>(
1270 BO->getRHS()->IgnoreParenImpCasts())) {
1271 llvm::APInt Value = IL->getValue();
1272 if (Value == 1 || Value == 2) {
1273 return true;
1274 }
1275 }
1276 return false;
1277}
1278
1279// A CallExpr with "LOC" in its identifier that takes in a string literal
1280// has been shown to almost always be a function that returns a localized
1281// string. Raise a diagnostic when this is in a statement that matches
1282// the condition.
1283bool PluralMisuseChecker::MethodCrawler::VisitCallExpr(const CallExpr *CE) {
1284 if (InMatchingStatement) {
1285 if (const FunctionDecl *FD = CE->getDirectCallee()) {
1286 std::string NormalizedName =
1287 StringRef(FD->getNameInfo().getAsString()).lower();
1288 if (NormalizedName.find("loc") != std::string::npos) {
1289 for (const Expr *Arg : CE->arguments()) {
1290 if (isa<ObjCStringLiteral>(Arg))
1291 reportPluralMisuseError(CE);
1292 }
1293 }
1294 }
1295 }
1296 return true;
1297}
1298
1299// The other case is for NSLocalizedString which also returns
1300// a localized string. It's a macro for the ObjCMessageExpr
1301// [NSBundle localizedStringForKey:value:table:] Raise a
1302// diagnostic when this is in a statement that matches
1303// the condition.
1304bool PluralMisuseChecker::MethodCrawler::VisitObjCMessageExpr(
1305 const ObjCMessageExpr *ME) {
1306 const ObjCInterfaceDecl *OD = ME->getReceiverInterface();
1307 if (!OD)
1308 return true;
1309
1310 const IdentifierInfo *odInfo = OD->getIdentifier();
1311
1312 if (odInfo->isStr("NSBundle") &&
1313 ME->getSelector().getAsString() == "localizedStringForKey:value:table:") {
1314 if (InMatchingStatement) {
1315 reportPluralMisuseError(ME);
1316 }
1317 }
1318 return true;
1319}
1320
1321/// Override TraverseIfStmt so we know when we are done traversing an IfStmt
1322bool PluralMisuseChecker::MethodCrawler::TraverseIfStmt(IfStmt *I) {
1324 return EndVisitIfStmt(I);
1325}
1326
1327// EndVisit callbacks are not provided by the RecursiveASTVisitor
1328// so we override TraverseIfStmt and make a call to EndVisitIfStmt
1329// after traversing the IfStmt
1330bool PluralMisuseChecker::MethodCrawler::EndVisitIfStmt(IfStmt *I) {
1331 MatchingStatements.pop_back();
1332 if (!MatchingStatements.empty()) {
1333 if (MatchingStatements.back() != nullptr) {
1334 InMatchingStatement = true;
1335 return true;
1336 }
1337 }
1338 InMatchingStatement = false;
1339 return true;
1340}
1341
1342bool PluralMisuseChecker::MethodCrawler::VisitIfStmt(const IfStmt *I) {
1343 const Expr *Condition = I->getCond();
1344 if (!Condition)
1345 return true;
1346 Condition = Condition->IgnoreParenImpCasts();
1347 if (isCheckingPlurality(Condition)) {
1348 MatchingStatements.push_back(I);
1349 InMatchingStatement = true;
1350 } else {
1351 MatchingStatements.push_back(nullptr);
1352 InMatchingStatement = false;
1353 }
1354
1355 return true;
1356}
1357
1358// Preliminary support for conditional operators.
1359bool PluralMisuseChecker::MethodCrawler::TraverseConditionalOperator(
1362 MatchingStatements.pop_back();
1363 if (!MatchingStatements.empty()) {
1364 if (MatchingStatements.back() != nullptr)
1365 InMatchingStatement = true;
1366 else
1367 InMatchingStatement = false;
1368 } else {
1369 InMatchingStatement = false;
1370 }
1371 return true;
1372}
1373
1374bool PluralMisuseChecker::MethodCrawler::VisitConditionalOperator(
1375 const ConditionalOperator *C) {
1376 const Expr *Condition = C->getCond()->IgnoreParenImpCasts();
1377 if (isCheckingPlurality(Condition)) {
1378 MatchingStatements.push_back(C);
1379 InMatchingStatement = true;
1380 } else {
1381 MatchingStatements.push_back(nullptr);
1382 InMatchingStatement = false;
1383 }
1384 return true;
1385}
1386
1387void PluralMisuseChecker::MethodCrawler::reportPluralMisuseError(
1388 const Stmt *S) const {
1389 // Generate the bug report.
1390 BR.EmitBasicReport(AC->getDecl(), Checker, "Plural Misuse",
1391 "Localizability Issue (Apple)",
1392 "Plural cases are not supported across all languages. "
1393 "Use a .stringsdict file instead",
1395}
1396
1397//===----------------------------------------------------------------------===//
1398// Checker registration.
1399//===----------------------------------------------------------------------===//
1400
1401void ento::registerNonLocalizedStringChecker(CheckerManager &mgr) {
1402 NonLocalizedStringChecker *checker =
1403 mgr.registerChecker<NonLocalizedStringChecker>();
1404 checker->IsAggressive =
1406 checker, "AggressiveReport");
1407}
1408
1409bool ento::shouldRegisterNonLocalizedStringChecker(const CheckerManager &mgr) {
1410 return true;
1411}
1412
1413void ento::registerEmptyLocalizationContextChecker(CheckerManager &mgr) {
1414 mgr.registerChecker<EmptyLocalizationContextChecker>();
1415}
1416
1417bool ento::shouldRegisterEmptyLocalizationContextChecker(
1418 const CheckerManager &mgr) {
1419 return true;
1420}
1421
1422void ento::registerPluralMisuseChecker(CheckerManager &mgr) {
1423 mgr.registerChecker<PluralMisuseChecker>();
1424}
1425
1426bool ento::shouldRegisterPluralMisuseChecker(const CheckerManager &mgr) {
1427 return true;
1428}
StringRef P
StringRef Identifier
Definition: Format.cpp:2984
#define X(type, name)
Definition: Value.h:142
#define LSM_INSERT_SELECTOR(receiver, method_list, arguments)
#define NEW_RECEIVER(receiver)
#define LSM_INSERT_NULLARY(receiver, method_name)
#define LSF_INSERT(function_name)
#define ADD_UNARY_METHOD(receiver, method, argument)
#define ADD_METHOD(receiver, method_list, count, argument)
#define LSM_INSERT_UNARY(receiver, method_name)
static bool isDebuggingContext(CheckerContext &C)
Returns true when, heuristically, the analyzer may be analyzing debugging code.
static bool isDebuggingName(std::string name)
static bool isNSStringType(QualType T, ASTContext &Ctx)
#define REGISTER_MAP_WITH_PROGRAMSTATE(Name, Key, Value)
Declares an immutable map of type NameTy, suitable for placement into the ProgramState.
Holds long-lived AST nodes (such as types and decls) that can be referred to throughout the semantic ...
Definition: ASTContext.h:182
IdentifierTable & Idents
Definition: ASTContext.h:636
AnalysisDeclContext contains the context data for the function, method or block under analysis.
bool getCheckerBooleanOption(StringRef CheckerName, StringRef OptionName, bool SearchInParents=false) const
Interprets an option's string value as a boolean.
A builtin binary operation expression such as "x + y" or "x <= y".
Definition: Expr.h:3862
Expr * getRHS() const
Definition: Expr.h:3913
CallExpr - Represents a function call (C99 6.5.2.2, C++ [expr.call]).
Definition: Expr.h:2847
FunctionDecl * getDirectCallee()
If the callee is a FunctionDecl, return it. Otherwise return null.
Definition: Expr.h:3017
arg_range arguments()
Definition: Expr.h:3086
ConditionalOperator - The ?: ternary operator.
Definition: Expr.h:4201
ConstStmtVisitor - This class implements a simple visitor for Stmt subclasses.
Definition: StmtVisitor.h:194
DeclContext - This is used only as base class of specific decl types that can act as declaration cont...
Definition: DeclBase.h:1435
A reference to a declared variable, function, enum, etc.
Definition: Expr.h:1248
Decl - This represents one declaration (or definition), e.g.
Definition: DeclBase.h:85
DeclContext * getDeclContext()
Definition: DeclBase.h:453
specific_attr_iterator< T > specific_attr_end() const
Definition: DeclBase.h:573
specific_attr_iterator< T > specific_attr_begin() const
Definition: DeclBase.h:568
Kind getKind() const
Definition: DeclBase.h:447
This represents one expression.
Definition: Expr.h:110
Expr * IgnoreParenImpCasts() LLVM_READONLY
Skip past any parentheses and implicit casts which might surround this expression until reaching a fi...
Definition: Expr.cpp:3031
Represents a function declaration or definition.
Definition: Decl.h:1957
One of these records is kept for each identifier that is lexed.
bool isStr(const char(&Str)[StrLen]) const
Return true if this is the identifier for the specified string.
IdentifierInfo & get(StringRef Name)
Return the identifier token info for the specified named identifier.
IfStmt - This represents an if/then/else.
Definition: Stmt.h:2132
Expr * getCond()
Definition: Stmt.h:2209
Keeps track of the various options that can be enabled, which controls the dialect of C or C++ that i...
Definition: LangOptions.h:83
Lexer - This provides a simple interface that turns a text buffer into a stream of tokens.
Definition: Lexer.h:78
IdentifierInfo * getIdentifier() const
Get the identifier that names this declaration, if there is one.
Definition: Decl.h:269
method_range methods() const
Definition: DeclObjC.h:1012
ObjCImplementationDecl - Represents a class definition - this is where method definitions are specifi...
Definition: DeclObjC.h:2595
Represents an ObjC class declaration.
Definition: DeclObjC.h:1150
all_protocol_range all_referenced_protocols() const
Definition: DeclObjC.h:1413
ObjCInterfaceDecl * getSuperClass() const
Definition: DeclObjC.cpp:351
An expression that sends a message to the given Objective-C object or class.
Definition: ExprObjC.h:945
Selector getSelector() const
Definition: ExprObjC.cpp:293
ObjCInterfaceDecl * getReceiverInterface() const
Retrieve the Objective-C interface to which this message is being directed, if known.
Definition: ExprObjC.cpp:314
ObjCMethodDecl - Represents an instance or class method declaration.
Definition: DeclObjC.h:140
Represents a pointer to an Objective C object.
Definition: Type.h:6430
const ObjCObjectType * getObjectType() const
Gets the type pointed to by this ObjC pointer.
Definition: Type.h:6467
ObjCInterfaceDecl * getInterface() const
Gets the interface declaration for this object type, if the base type really is an interface.
Definition: Type.h:6409
ObjCStringLiteral, used for Objective-C string literals i.e.
Definition: ExprObjC.h:51
std::optional< T > getAs() const
Convert to the specified ProgramPoint type, returning std::nullopt if this ProgramPoint is not of the...
Definition: ProgramPoint.h:147
A (possibly-)qualified type.
Definition: Type.h:736
A class that does preorder or postorder depth-first traversal on the entire Clang AST and visits each...
Smart pointer class that efficiently represents Objective-C method names.
std::string getAsString() const
Derive the full selector name (e.g.
Encodes a location in the source.
bool isValid() const
Return true if this is a valid SourceLocation object.
SourceLocation getImmediateMacroCallerLoc(SourceLocation Loc) const
Gets the location of the immediate macro caller, one level up the stack toward the initial macro type...
std::pair< FileID, unsigned > getDecomposedLoc(SourceLocation Loc) const
Decompose the specified location into a raw FileID + Offset pair.
std::optional< llvm::MemoryBufferRef > getBufferOrNone(FileID FID, SourceLocation Loc=SourceLocation()) const
Return the buffer for the specified FileID.
const SrcMgr::SLocEntry & getSLocEntry(FileID FID, bool *Invalid=nullptr) const
A trivial tuple used to represent a source range.
SourceLocation getBegin() const
SourceLocation getSpellingLoc() const
This is a discriminated union of FileInfo and ExpansionInfo.
const ExpansionInfo & getExpansion() const
Stmt - This represents one statement.
Definition: Stmt.h:84
SourceRange getSourceRange() const LLVM_READONLY
SourceLocation tokens are not useful in isolation - they are low level value objects created/interpre...
Definition: Stmt.cpp:325
Token - This structure provides full information about a lexed token.
Definition: Token.h:35
tok::TokenKind getKind() const
Definition: Token.h:93
const T * getAs() const
Member-template getAs<specific type>'.
Definition: Type.h:7558
Represents a variable declaration or definition.
Definition: Decl.h:916
AnalysisDeclContext * getAnalysisDeclContext(const Decl *D)
SourceManager & getSourceManager() override
const SourceManager & getSourceManager() const
Definition: BugReporter.h:721
BugReporterVisitors are used to add custom diagnostics along a path.
virtual void Profile(llvm::FoldingSetNodeID &ID) const =0
virtual PathDiagnosticPieceRef VisitNode(const ExplodedNode *Succ, BugReporterContext &BRC, PathSensitiveBugReport &BR)=0
Return a diagnostic piece which should be associated with the given node.
BugReporter is a utility class for generating PathDiagnostics for analysis.
Definition: BugReporter.h:584
const SourceManager & getSourceManager()
Definition: BugReporter.h:616
void EmitBasicReport(const Decl *DeclWithIssue, const CheckerBase *Checker, StringRef BugName, StringRef BugCategory, StringRef BugStr, PathDiagnosticLocation Loc, ArrayRef< SourceRange > Ranges=std::nullopt, ArrayRef< FixItHint > Fixits=std::nullopt)
Represents an abstract call to a function or method along a particular path.
Definition: CallEvent.h:152
virtual SVal getArgSVal(unsigned Index) const
Returns the value of a given argument at the time of the call.
Definition: CallEvent.cpp:308
virtual const Expr * getArgExpr(unsigned Index) const
Returns the expression associated with a given argument.
Definition: CallEvent.h:292
SVal getReturnValue() const
Returns the return value of the call.
Definition: CallEvent.cpp:322
virtual SourceRange getSourceRange() const
Returns a source range for the entire call, suitable for outputting in diagnostics.
Definition: CallEvent.h:283
const AnalyzerOptions & getAnalyzerOptions() const
CHECKER * registerChecker(AT &&... Args)
Used to register checkers.
Tag that can use a checker name as a message provider (see SimpleProgramPointTag).
Definition: Checker.h:509
ProgramPoint getLocation() const
getLocation - Returns the edge associated with the given node.
SVal getSVal(const Stmt *S) const
Get the value of an arbitrary expression at this node.
MemRegion - The root abstract class for all memory regions.
Definition: MemRegion.h:96
Represents any expression that calls an Objective-C method.
Definition: CallEvent.h:1171
const ObjCMethodDecl * getDecl() const override
Returns the declaration of the function or method that will be called.
Definition: CallEvent.h:1201
bool isInstanceMessage() const
Definition: CallEvent.h:1211
SVal getReceiverSVal() const
Returns the value of the receiver at the time of this call.
Definition: CallEvent.cpp:1004
const ObjCInterfaceDecl * getReceiverInterface() const
Get the interface for the receiver.
Definition: CallEvent.h:1230
Selector getSelector() const
Definition: CallEvent.h:1219
The region associated with an ObjCStringLiteral.
Definition: MemRegion.h:858
static PathDiagnosticLocation create(const Decl *D, const SourceManager &SM)
Create a location corresponding to the given declaration.
SVal - This represents a symbolic expression, which can be either an L-value or an R-value.
Definition: SVals.h:55
const MemRegion * getAsRegion() const
Definition: SVals.cpp:120
StringRegion - Region associated with a StringLiteral.
Definition: MemRegion.h:824
SymbolicRegion - A special, "non-concrete" region.
Definition: MemRegion.h:775
llvm::PointerUnion< const LocationContext *, AnalysisDeclContext * > LocationOrAnalysisDeclContext
std::shared_ptr< PathDiagnosticPiece > PathDiagnosticPieceRef
bool isStringLiteral(TokenKind K)
Return true if this is a C or C++ string-literal (or C++11 user-defined-string-literal) token.
Definition: TokenKinds.h:89
bool isAnyIdentifier(TokenKind K)
Return true if this is a raw identifier or an identifier kind.
Definition: TokenKinds.h:83
bool operator==(const CallGraphNode::CallRecord &LHS, const CallGraphNode::CallRecord &RHS)
Definition: CallGraph.h:207
#define false
Definition: stdbool.h:22