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Introduce "-internal" variant of bridging header import flags

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The flags "-import-bridging-header" and "-import-pch" import a bridging
header, treating the contents as a public import. Introduce
"internal-" variants of both flags that provide the same semantics,
but are intended to treat the imported contents as if they came in
through an internal import. This is just plumbing of the options for
the moment.
This commit is contained in:
Doug Gregor
2025-09-19 11:58:47 -07:00
parent ffa6d65f12
commit 2383d7ab2d
12 changed files with 148 additions and 19 deletions
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3
test/ClangImporter/Inputs/c-bridging-header.h Normal file
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typedef struct {
double x, y;
} MyPoint;

50
test/ClangImporter/InternalBridgingHeader/pch.swift Normal file
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// RUN: %empty-directory(%t)
// RUN: mkdir -p %t/tmp
// First test the explicit frontend-based bridging PCH generation and use works
// RUN: %target-swift-frontend -emit-pch -o %t/c-bridging-header.pch %S/../Inputs/c-bridging-header.h
// RUN: %target-typecheck-verify-swift -internal-import-bridging-header %t/c-bridging-header.pch
// Now test the driver-automated version is inert when disabled
// Output path of the PCH differs in the new driver, so force SWIFT_USE_OLD_DRIVER for now.
// RUN: env TMPDIR=%t/tmp/ SWIFT_USE_OLD_DRIVER=1 %target-swiftc_driver -typecheck -disable-bridging-pch -save-temps %s -internal-import-bridging-header %S/../Inputs/c-bridging-header.h
// RUN: not ls %t/tmp/*.pch >/dev/null 2>&1
// Test the driver-automated version works by default
// Output path of the PCH differs in the new driver, so force SWIFT_USE_OLD_DRIVER for now.
// RUN: env TMPDIR=%t/tmp/ SWIFT_USE_OLD_DRIVER=1 %target-swiftc_driver -typecheck -save-temps %s -internal-import-bridging-header %S/../Inputs/c-bridging-header.h
// RUN: ls %t/tmp/*.pch >/dev/null 2>&1
// RUN: llvm-objdump --raw-clang-ast %t/tmp/*.pch | llvm-bcanalyzer -dump | %FileCheck %s
// CHECK: ORIGINAL_FILE{{.*}}Inputs/c-bridging-header.h
// Test the driver-automated version deletes its PCH file when done
// RUN: rm %t/tmp/*.pch
// RUN: env TMPDIR=%t/tmp/ %target-swiftc_driver -typecheck %s -internal-import-bridging-header %S/../Inputs/c-bridging-header.h
// RUN: not ls %t/tmp/*.pch >/dev/null 2>&1
// Test -emit-pch invocation but with a persistent PCH
// RUN: %target-swift-frontend -emit-pch -pch-output-dir %t/pch %S/../Inputs/c-bridging-header.h
// RUN: %target-typecheck-verify-swift -internal-import-bridging-header %S/../Inputs/c-bridging-header.h -pch-output-dir %t/pch -pch-disable-validation
// RUN: ls %t/pch/*.pch >/dev/null 2>&1
// Test implicit use of persistent PCH
// RUN: %target-typecheck-verify-swift -internal-import-bridging-header %S/../Inputs/c-bridging-header.h -pch-output-dir %t/pch2
// RUN: ls %t/pch2/*.pch >/dev/null 2>&1
// RUN: touch %t/header.with.dot.h
// RUN: touch %t/test.swift
// RUN: %target-swift-frontend -typecheck %t/test.swift -internal-import-bridging-header %t/header.with.dot.h -pch-output-dir %t/pch_with_dot -module-cache-path %t/mcp1
// RUN: %target-swift-frontend -typecheck %t/test.swift -internal-import-bridging-header %t/header.with.dot.h -pch-output-dir %t/pch_with_dot -module-cache-path %t/mcp2
// RUN: ls %t/pch_with_dot/*swift*clang*.pch | count 2
// Test the driver-automated version using persistent PCH
// RUN: %target-swiftc_driver -typecheck -save-temps %s -internal-import-bridging-header %S/../Inputs/c-bridging-header.h -pch-output-dir %t/pch3
// RUN: ls %t/pch3/*.pch >/dev/null 2>&1
// RUN: llvm-objdump --raw-clang-ast %t/pch3/*.pch | llvm-bcanalyzer -dump | %FileCheck %s -check-prefix=PERSISTENT
// PERSISTENT: ORIGINAL_FILE{{.*}}Inputs/c-bridging-header.h
// Test that -pch-disable-validation works in that it won't implicitly create a PCH
// RUN: not %target-swift-frontend -typecheck %s -internal-import-bridging-header %S/../Inputs/c-bridging-header.h -pch-output-dir %t/no-pch -pch-disable-validation 2>&1 | %FileCheck %s -check-prefix=NO-VALIDATION
// NO-VALIDATION: PCH file {{.*}} not found
func getX(point: MyPoint) -> Double { point.x }