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The diagnostics engine has some code to pretty-print a declaration when there is no source location for that declaration. The declaration is pretty-printed into a source buffer, and a source location into that buffer is synthesizes. This applies to synthesized declarations as well as those imported from Swift modules (without source code) or from Clang. Reimplement this pretty-printing for declarations as a request. In doing so, change the manner in which we do the printing: the diagnostics engine printed the entire enclosing type into a buffer whose name was the module + that type. This meant that the buffer was shared by every member of that type, but also meant that we would end up deserializing a lot of declarations just for printing and potentially doing a lot more work for these diagnostics.
14 lines
797 B
Swift
14 lines
797 B
Swift
// RUN: %empty-directory(%t)
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// RUN: %target-swift-frontend -emit-module -module-name ModuleA -emit-module-path %t/ModuleA.swiftmodule -primary-file %S/Inputs/TestablePrintASTLocationsModule.swift -enable-testing
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// RUN: %target-swift-frontend -emit-module -module-name ModuleB -emit-module-path %t/ModuleB.swiftmodule -primary-file %S/Inputs/TestablePrintASTLocationsModule.swift -enable-testing
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// RUN: not %target-swift-frontend -typecheck -I %t %s 2>&1 | %FileCheck %s
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@testable import ModuleA
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@testable import ModuleB
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ambiguous()
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// CHECK: testable-printast-locations.swift:[[@LINE-2]]:1: error: ambiguous use of 'ambiguous()'
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// CHECK: ModuleA.ambiguous:1:15: note: found this candidate in module 'ModuleA'
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// CHECK: ModuleB.ambiguous:1:15: note: found this candidate in module 'ModuleB'
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