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The algorithm already performs pairwise checks on module dependencies brought into compilation per-source-file. Previously, the algorithm considered the entire sub-graph of a given source file. Actual source compiles do not consider the full transitive module dependency set for cross-import-overlay lookup, but rather only directly-imported modules in a given source file, and '@_exported import' Swift transitive dependencies. This change adds tracking of whether a given import statement is 'exported' to the dependency scanner and then refines the cross-import overlay lookup logic to only consider transitive modules that are exported by directly-imported dependencies.
42 lines
2.0 KiB
Swift
42 lines
2.0 KiB
Swift
// RUN: %empty-directory(%t)
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// RUN: mkdir -p %t/clang-module-cache
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// RUN: %target-swift-frontend -scan-dependencies -module-load-mode prefer-interface -module-cache-path %t/clang-module-cache %s -o %t/deps.json -I %S/Inputs/CHeaders -I %S/Inputs/Swift -I %S/Inputs/CHeaders/ExtraCModules -import-objc-header %S/Inputs/CHeaders/Bridging.h -swift-version 4 -module-name CrossImportTestModule -enable-cross-import-overlays
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// Check the contents of the JSON output
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// RUN: %validate-json %t/deps.json | %FileCheck %s
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// Ensure that round-trip serialization does not affect result
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// RUN: %target-swift-frontend -scan-dependencies -module-load-mode prefer-interface -test-dependency-scan-cache-serialization -module-cache-path %t/clang-module-cache %s -o %t/deps.json -I %S/Inputs/CHeaders -I %S/Inputs/Swift -I %S/Inputs/CHeaders/ExtraCModules -import-objc-header %S/Inputs/CHeaders/Bridging.h -swift-version 4 -module-name CrossImportTestModule -enable-cross-import-overlays
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// RUN: %validate-json %t/deps.json | %FileCheck %s
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// REQUIRES: executable_test
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// REQUIRES: objc_interop
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@_exported import CrossImportTestModule
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import EWrapper
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import SubEWrapper
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// CHECK: "directDependencies": [
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// CHECK-DAG: "swift": "EWrapper"
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// CHECK-DAG: "swift": "F"
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// CHECK-DAG: "swift": "SubEWrapper"
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// CHECK-DAG: "swift": "Swift"
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// CHECK-DAG: "swift": "SwiftOnoneSupport"
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// CHECK-DAG: "swift": "_Concurrency"
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// CHECK-DAG: "swift": "_StringProcessing"
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// CHECK-DAG: "swift": "_cross_import_E"
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// CHECK-DAG: "clang": "_SwiftConcurrencyShims"
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// CHECK-DAG: "clang": "CrossImportTestModule"
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// Ensure a transitive dependency via "_cross_import_E" is not a direct dep of main module
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// CHECK-NOT: "clang": "X"
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// CHECK: ],
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// CHECK: "swift": {
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// CHECK-NEXT: "commandLine": [
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// CHECK-NEXT: "-disable-cross-import-overlay-search",
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// CHECK-NEXT: "-swift-module-cross-import",
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// CHECK-NEXT: "E",
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// CHECK-NEXT: SubE.swiftoverlay
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// Ensure a transitive dependency via "_cross_import_E" is recorded in the graph still
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// CHECK: "clang": "X"
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