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[SourceKit] Record module loading errors when generating interfaces

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Record up to two errors emitted when we fail to
load a module for interface generation, and include
these errors in the message we pass back to the
editor. This should help us better pin down the
reason why interface generation failed.

rdar://109511099
This commit is contained in:
Hamish Knight
2023-06-15 23:55:07 +01:00
parent 85d59d2e55
commit a9f9bd1394
4 changed files with 185 additions and 14 deletions
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43
test/SourceKit/InterfaceGen/error_clang_module.swift Normal file
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// RUN: %empty-directory(%t/Inputs)
// RUN: %empty-directory(%t/Inputs/objcfail)
// RUN: split-file %s %t/Inputs
//--- objcfail/objcfail.h
#ifdef FAIL
#error some error from Clang module
// We only record the first error emitted, so we ignore this one.
#error another error from Clang module
#endif
void foo(void);
//--- objcfail/module.modulemap
module ObjCFail {
header "objcfail.h"
export *
}
//--- Library.swift
import ObjCFail
// First try printing the interface of the Clang module directly.
// RUN: %sourcekitd-test -req=interface-gen -module ObjCFail -- -I %t/Inputs/objcfail -target %target-triple %s | %FileCheck --check-prefix DIRECT-SUCCESS %s
// DIRECT-SUCCESS: public func foo()
// RUN: not %sourcekitd-test -req=interface-gen -module ObjCFail -- -Xcc -DFAIL -I %t/Inputs/objcfail -target %target-triple %s 2>&1 | %FileCheck --check-prefix DIRECT-FAIL %s
// DIRECT-FAIL: Could not load module: ObjCFail (could not build {{Objective-C|C}} module 'ObjCFail', some error from Clang module)
// Now try doing it transitively
// RUN: %target-swift-frontend -emit-module %t/Inputs/Library.swift -I %t/Inputs/objcfail -module-name Library -o %t
// RUN: %sourcekitd-test -req=interface-gen -module Library -- -I %t -target %target-triple %s | %FileCheck --check-prefix TRANSITIVE-SUCCESS %s
// TRANSITIVE-SUCCESS: import ObjCFail
// RUN: not %sourcekitd-test -req=interface-gen -module Library -- -Xcc -DFAIL -I %t -target %target-triple %s 2>&1 | %FileCheck --check-prefix TRANSITIVE-FAIL %s
// TRANSITIVE-FAIL: Could not load module: Library (could not build {{Objective-C|C}} module 'ObjCFail', some error from Clang module)