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Merge pull request swiftlang#33114 from brentdax/check-your-interfaces-at-the-door
Verify that just-emitted module interfaces parse and typecheck
2 parents e1d0ea2 + f824204 commit 8fbd449

23 files changed

+203
-26
lines changed

‎include/swift/AST/DiagnosticsSema.def‎

Lines changed: 6 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -708,12 +708,12 @@ ERROR(sema_opening_import,Fatal,
708708
ERROR(serialization_load_failed,Fatal,
709709
"failed to load module '%0'", (StringRef))
710710
ERROR(module_interface_build_failed,Fatal,
711-
"failed to build module '%0' from its module interface; "
712-
"%select{the compiler that produced it, '%2', may have used features "
713-
"that aren't supported by this compiler, '%3'"
714-
"|it may have been damaged or it may have triggered a bug in the Swift "
715-
"compiler when it was produced}1",
716-
(StringRef, bool, StringRef, StringRef))
711+
"failed to %select{build module '%1' from its module interface|verify "
712+
"module interface of '%1'}0; %select{the compiler that produced it, "
713+
"'%3', may have used features that aren't supported by this compiler, "
714+
"'%4'|it may have been damaged or it may have triggered a bug in the "
715+
"Swift compiler when it was produced}2",
716+
(bool, StringRef, bool, StringRef, StringRef))
717717
ERROR(serialization_malformed_module,Fatal,
718718
"malformed compiled module: %0", (StringRef))
719719
ERROR(serialization_module_too_new,Fatal,

‎include/swift/Driver/Action.h‎

Lines changed: 22 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -51,9 +51,10 @@ class Action {
5151
GenerateDSYMJob,
5252
VerifyDebugInfoJob,
5353
GeneratePCHJob,
54+
VerifyModuleInterfaceJob,
5455

5556
JobFirst = CompileJob,
56-
JobLast = GeneratePCHJob
57+
JobLast = VerifyModuleInterfaceJob
5758
};
5859

5960
static const char *getClassName(Kind AC);
@@ -357,6 +358,26 @@ class StaticLinkJobAction : public JobAction {
357358
}
358359
};
359360

361+
class VerifyModuleInterfaceJobAction : public JobAction {
362+
virtual void anchor();
363+
file_types::ID inputType;
364+
365+
public:
366+
VerifyModuleInterfaceJobAction(const Action * ModuleEmitter,
367+
file_types::ID inputType)
368+
: JobAction(Action::Kind::VerifyModuleInterfaceJob, { ModuleEmitter },
369+
file_types::TY_Nothing), inputType(inputType) {
370+
assert(inputType == file_types::TY_SwiftModuleInterfaceFile ||
371+
inputType == file_types::TY_PrivateSwiftModuleInterfaceFile);
372+
}
373+
374+
file_types::ID getInputType() const { return inputType; }
375+
376+
static bool classof(const Action *A) {
377+
return A->getKind() == Action::Kind::VerifyModuleInterfaceJob;
378+
}
379+
};
380+
360381
} // end namespace driver
361382
} // end namespace swift
362383

‎include/swift/Driver/ToolChain.h‎

Lines changed: 3 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -162,6 +162,9 @@ class ToolChain {
162162
virtual InvocationInfo
163163
constructInvocation(const VerifyDebugInfoJobAction &job,
164164
const JobContext &context) const;
165+
virtual InvocationInfo
166+
constructInvocation(const VerifyModuleInterfaceJobAction &job,
167+
const JobContext &context) const;
165168
virtual InvocationInfo constructInvocation(const GeneratePCHJobAction &job,
166169
const JobContext &context) const;
167170
virtual InvocationInfo

‎include/swift/Frontend/FrontendOptions.h‎

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -116,6 +116,8 @@ class FrontendOptions {
116116

117117
/// Build from a swiftinterface, as close to `import` as possible
118118
CompileModuleFromInterface,
119+
/// Same as CompileModuleFromInterface, but stopping after typechecking
120+
TypecheckModuleFromInterface,
119121

120122
EmitSIBGen, ///< Emit serialized AST + raw SIL
121123
EmitSIB, ///< Emit serialized AST + canonical SIL

‎include/swift/Frontend/ModuleInterfaceLoader.h‎

Lines changed: 13 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -285,6 +285,8 @@ class ExplicitModuleMapParser {
285285
};
286286

287287
struct ModuleInterfaceLoaderOptions {
288+
FrontendOptions::ActionType requestedAction =
289+
FrontendOptions::ActionType::EmitModuleOnly;
288290
bool remarkOnRebuildFromInterface = false;
289291
bool disableInterfaceLock = false;
290292
bool disableImplicitSwiftModule = false;
@@ -293,7 +295,17 @@ struct ModuleInterfaceLoaderOptions {
293295
remarkOnRebuildFromInterface(Opts.RemarkOnRebuildFromModuleInterface),
294296
disableInterfaceLock(Opts.DisableInterfaceFileLock),
295297
disableImplicitSwiftModule(Opts.DisableImplicitModules),
296-
mainExecutablePath(Opts.MainExecutablePath) {}
298+
mainExecutablePath(Opts.MainExecutablePath)
299+
{
300+
switch (Opts.RequestedAction) {
301+
case FrontendOptions::ActionType::TypecheckModuleFromInterface:
302+
requestedAction = FrontendOptions::ActionType::Typecheck;
303+
break;
304+
default:
305+
requestedAction = FrontendOptions::ActionType::EmitModuleOnly;
306+
break;
307+
}
308+
}
297309
ModuleInterfaceLoaderOptions() = default;
298310
};
299311

‎include/swift/Frontend/ModuleInterfaceSupport.h‎

Lines changed: 4 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -41,12 +41,15 @@ struct ModuleInterfaceOptions {
4141
/// back .swiftinterface and reconstructing .swiftmodule.
4242
std::string Flags;
4343

44-
// Print SPI decls and attributes.
44+
/// Print SPI decls and attributes.
4545
bool PrintSPIs = false;
4646

4747
/// Print imports with both @_implementationOnly and @_spi, only applies
4848
/// when PrintSPIs is true.
4949
bool ExperimentalSPIImports = false;
50+
51+
/// Intentionally print invalid syntax into the file.
52+
bool DebugPrintInvalidSyntax = false;
5053
};
5154

5255
extern version::Version InterfaceFormatVersion;

‎include/swift/Option/FrontendOptions.td‎

Lines changed: 8 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -260,6 +260,9 @@ def debug_forbid_typecheck_prefix : Separate<["-"], "debug-forbid-typecheck-pref
260260
HelpText<"Triggers llvm fatal_error if typechecker tries to typecheck a decl "
261261
"with the provided prefix name">;
262262

263+
def debug_emit_invalid_swiftinterface_syntax : Flag<["-"], "debug-emit-invalid-swiftinterface-syntax">,
264+
HelpText<"Write an invalid declaration into swiftinterface files">;
265+
263266
def debug_cycles : Flag<["-"], "debug-cycles">,
264267
HelpText<"Print out debug dumps when cycles are detected in evaluation">;
265268
def build_request_dependency_graph : Flag<["-"], "build-request-dependency-graph">,
@@ -645,6 +648,11 @@ def build_module_from_parseable_interface :
645648
Alias<compile_module_from_interface>,
646649
ModeOpt;
647650

651+
def typecheck_module_from_interface :
652+
Flag<["-"], "typecheck-module-from-interface">,
653+
HelpText<"Treat the (single) input as a swiftinterface and typecheck it">,
654+
ModeOpt;
655+
648656
def module_interface_preserve_types_as_written :
649657
Flag<["-"], "module-interface-preserve-types-as-written">,
650658
HelpText<"When emitting a module interface, preserve types as they were "

‎include/swift/Option/Options.td‎

Lines changed: 9 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -460,6 +460,15 @@ def emit_private_module_interface_path :
460460
DoesNotAffectIncrementalBuild, ArgumentIsPath, SupplementaryOutput]>,
461461
MetaVarName<"<path>">, HelpText<"Output private module interface file to <path>">;
462462

463+
def verify_emitted_module_interface :
464+
Flag<["-"], "verify-emitted-module-interface">,
465+
Flags<[NoInteractiveOption, DoesNotAffectIncrementalBuild]>,
466+
HelpText<"Check that module interfaces emitted during compilation typecheck">;
467+
def no_verify_emitted_module_interface :
468+
Flag<["-"], "no-verify-emitted-module-interface">,
469+
Flags<[NoInteractiveOption, DoesNotAffectIncrementalBuild]>,
470+
HelpText<"Don't check that module interfaces emitted during compilation typecheck">;
471+
463472
def avoid_emit_module_source_info :
464473
Flag<["-"], "avoid-emit-module-source-info">,
465474
Flags<[NoInteractiveOption, DoesNotAffectIncrementalBuild]>,

‎lib/Driver/Action.cpp‎

Lines changed: 3 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -33,6 +33,7 @@ const char *Action::getClassName(Kind AC) {
3333
case Kind::GenerateDSYMJob: return "generate-dSYM";
3434
case Kind::VerifyDebugInfoJob: return "verify-debug-info";
3535
case Kind::GeneratePCHJob: return "generate-pch";
36+
case Kind::VerifyModuleInterfaceJob: return "verify-module-interface";
3637
}
3738

3839
llvm_unreachable("invalid class");
@@ -65,3 +66,5 @@ void GenerateDSYMJobAction::anchor() {}
6566
void VerifyDebugInfoJobAction::anchor() {}
6667

6768
void GeneratePCHJobAction::anchor() {}
69+
70+
void VerifyModuleInterfaceJobAction::anchor() {}

‎lib/Driver/Driver.cpp‎

Lines changed: 24 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -2208,6 +2208,30 @@ void Driver::buildActions(SmallVectorImpl<const Action *> &TopLevelActions,
22082208
TopLevelActions.push_back(MergeModuleAction);
22092209
TopLevelActions.append(AllLinkerInputs.begin(), AllLinkerInputs.end());
22102210
}
2211+
2212+
#ifdef NDEBUG
2213+
bool verifyInterfacesByDefault = false;
2214+
#else
2215+
bool verifyInterfacesByDefault = true;
2216+
#endif
2217+
2218+
if (MergeModuleAction
2219+
&& Args.hasFlag(options::OPT_verify_emitted_module_interface,
2220+
options::OPT_no_verify_emitted_module_interface,
2221+
verifyInterfacesByDefault)) {
2222+
if (Args.hasArgNoClaim(options::OPT_emit_module_interface,
2223+
options::OPT_emit_module_interface_path)) {
2224+
TopLevelActions.push_back(
2225+
C.createAction<VerifyModuleInterfaceJobAction>(MergeModuleAction,
2226+
file_types::TY_SwiftModuleInterfaceFile));
2227+
}
2228+
2229+
if (Args.hasArgNoClaim(options::OPT_emit_private_module_interface_path)) {
2230+
TopLevelActions.push_back(
2231+
C.createAction<VerifyModuleInterfaceJobAction>(MergeModuleAction,
2232+
file_types::TY_PrivateSwiftModuleInterfaceFile));
2233+
}
2234+
}
22112235
}
22122236

22132237
bool Driver::handleImmediateArgs(const ArgList &Args, const ToolChain &TC) {

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