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It is possible that import resolution failed because we are attempting to resolve a module which can only be brought in via a modulemap of a different Clang module dependency which is not otherwise on the current search paths. For example, suppose we are scanning a '.swiftinterface' for module 'Foo', which contains: ''' @_exported import Foo import Bar ... Where 'Foo' is the underlying Framework clang module whose '.modulemap' defines an auxiliary module 'Bar'. Because 'Foo' is a framework, its modulemap is under '<some_framework_search_path>/Foo.framework/Modules/module.modulemap'. Which means that lookup of `Bar` alone from Swift will not be able to locate the module in it. However, the lookup of Foo will itself bring in the auxiliary module becuase the Clang scanner instance scanning for clang module Foo will be able to find it in the corresponding framework module's modulemap and register it as a dependency which means it will be registered with the scanner's cache in the step above. To handle such cases, we first add all successfully-resolved modules and (for Clang modules) their transitive dependencies to the cache, and then attempt to re-query imports for which resolution originally failed from the cache. If this fails, then the scanner genuinely failed to resolve this dependency.
21 lines
1.0 KiB
Swift
21 lines
1.0 KiB
Swift
// REQUIRES: OS=macosx
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// RUN: %empty-directory(%t)
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// RUN: %target-swift-frontend -scan-dependencies %s -o %t/deps.json -emit-dependencies -emit-dependencies-path %t/deps.d -disable-implicit-concurrency-module-import -disable-implicit-string-processing-module-import -F %S/Inputs/Frameworks
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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 -test-dependency-scan-cache-serialization %s -o %t/deps.json -emit-dependencies -emit-dependencies-path %t/deps.d -disable-implicit-concurrency-module-import -disable-implicit-string-processing-module-import -F %S/Inputs/Frameworks
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// RUN: %validate-json %t/deps.json | %FileCheck %s
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import ScannerTestKit
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// CHECK: "mainModuleName": "deps"
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// CHECK: directDependencies
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// CHECK-DAG: "swift": "ScannerTestKit"
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// CHECK-DAG: "swift": "Swift"
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// CHECK-DAG: "swift": "SwiftOnoneSupport"
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// CHECK: ],
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// CHECK: "isFramework": true
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