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A ‘forwarding module’ is a YAML file that’s meant to stand in for a .swiftmodule file and provide an up-to-date description of its dependencies, always using modification times. When a ‘prebuilt module’ is first loaded, we verify that it’s up-to-date by hashing all of its dependencies. Since this is orders of magnitude slower than reading mtimes, we’ll install a `forwarding module` containing the mtimes of the now-validated dependencies.
47 lines
3.5 KiB
Swift
47 lines
3.5 KiB
Swift
// RUN: %empty-directory(%t)
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// RUN: %empty-directory(%t/MCP)
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// RUN: %empty-directory(%t/prebuilt-cache)
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// First, prebuild a module and put it in the prebuilt cache.
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// RUN: sed -e 's/FromInterface/FromPrebuilt/g' %S/Inputs/prebuilt-module-cache/Lib.swiftinterface > %t/Lib.swiftinterface
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// RUN: %target-swift-frontend -build-module-from-parseable-interface -module-cache-path %t/MCP -serialize-parseable-module-interface-dependency-hashes -o %t/prebuilt-cache/Lib.swiftmodule %t/Lib.swiftinterface
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// Next, use the module and check if the forwarding module is in place.
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// RUN: not %target-swift-frontend -typecheck -enable-parseable-module-interface -parse-stdlib -module-cache-path %t/MCP -sdk %S/Inputs -I %S/Inputs/prebuilt-module-cache/ -prebuilt-module-cache-path %t/prebuilt-cache %s 2>&1 | %FileCheck -check-prefix=FROM-PREBUILT %s
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// Make sure we installed a forwarding module.
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// RUN: %{python} %S/Inputs/check-is-forwarding-module.py %t/MCP/Lib-*.swiftmodule
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// Now invalidate a dependency of the prebuilt module, and make sure the forwarding file is replaced with a real module.
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// RUN: touch %t/Lib.swiftinterface
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// RUN: not %target-swift-frontend -typecheck -enable-parseable-module-interface -parse-stdlib -module-cache-path %t/MCP -sdk %S/Inputs -I %S/Inputs/prebuilt-module-cache/ -prebuilt-module-cache-path %t/prebuilt-cache %s 2>&1 | %FileCheck -check-prefix=FROM-INTERFACE %s
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// Delete the cached module we just created, and create the forwarding module again
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// RUN: %empty-directory(%t/MCP)
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// RUN: not %target-swift-frontend -typecheck -enable-parseable-module-interface -parse-stdlib -module-cache-path %t/MCP -sdk %S/Inputs -I %S/Inputs/prebuilt-module-cache/ -prebuilt-module-cache-path %t/prebuilt-cache %s 2>&1 | %FileCheck -check-prefix=FROM-PREBUILT %s
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// Move the prebuilt module out of the way, so the forwarding module points to nothing.
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// RUN: mv %t/prebuilt-cache/Lib.swiftmodule %t/prebuilt-cache/NotLib.swiftmodule
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// Make sure we delete the existing forwarding module and rebuild from an interface.
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// RUN: not %target-swift-frontend -typecheck -enable-parseable-module-interface -parse-stdlib -module-cache-path %t/MCP -sdk %S/Inputs -I %S/Inputs/prebuilt-module-cache/ -prebuilt-module-cache-path %t/prebuilt-cache %s 2>&1 | %FileCheck -check-prefix=FROM-INTERFACE %s
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// Move the prebuilt module back to its original path
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// RUN: mv %t/prebuilt-cache/NotLib.swiftmodule %t/prebuilt-cache/Lib.swiftmodule
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// If the forwarding module is corrupted, we shouldn't rebuild the module in the cache,
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// we should delete it and generate a new forwarding module.
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// RUN: %empty-directory(%t/MCP)
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// RUN: not %target-swift-frontend -typecheck -enable-parseable-module-interface -parse-stdlib -module-cache-path %t/MCP -sdk %S/Inputs -I %S/Inputs/prebuilt-module-cache/ -prebuilt-module-cache-path %t/prebuilt-cache %s 2>&1
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// RUN: %{python} %S/Inputs/check-is-forwarding-module.py %t/MCP/Lib-*.swiftmodule
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// RUN: chmod a-r %t/MCP/Lib-*.swiftmodule
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// RUN: not %target-swift-frontend -typecheck -enable-parseable-module-interface -parse-stdlib -module-cache-path %t/MCP -sdk %S/Inputs -I %S/Inputs/prebuilt-module-cache/ -prebuilt-module-cache-path %t/prebuilt-cache %s 2>&1 | %FileCheck -check-prefix=FROM-PREBUILT %s
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// RUN: %{python} %S/Inputs/check-is-forwarding-module.py %t/MCP/Lib-*.swiftmodule
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import Lib
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struct X {}
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let _: X = Lib.testValue
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// FROM-INTERFACE: [[@LINE-1]]:16: error: cannot convert value of type 'FromInterface' to specified type 'X'
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// FROM-PREBUILT: [[@LINE-2]]:16: error: cannot convert value of type 'FromPrebuilt' to specified type 'X'
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