Files
swift-mirror/test/SymbolGraph/EmptyExtension.swift
Max Obermeier 453fd2231b Allow for emission of swift.extension symbols for extensions to external types in swiftSymbolGraphGen (#59047)
This includes:
 - bumping the SWIFT_SYMBOLGRAPH_FORMAT_MINOR version
 - introduction of the "swift.extension" symbol and "extensionTo" relationship
 - adding support for ExtensionDecl to the Symbol class
 - adding a "typeKind" field to the symbol's extension mixin which indicates what kind
   of symbol was extended
 - intoduction of the -emit-extension-block-symbols flag, which enables the behavior
   outlined below
 - adaptions to SymbolGraphASTWalker that ensure a swift.extension symbol is emitted
   for each extension to a type that does not exist in the local symbol graph
 - adaptions to SymbolGraph and SymbolGraphASTWalker that ensure member and conformance
   relationships are correctly associated with the swift.extension symbol instead of
   the original type declaration's (extended nominal's) symbol where applicable
 - adaptions to SymbolGraphASTWalker that ensure swift.extension symbols are connected
   to their respective extended nominal's symbol using an extensionTo relationship

Testing:
- adds SymbolGraph tests that test behavior only relevant in
  -emit-extension-block-symbols mode
- adapts some SymbolGraph tests to additionally test similar behavior for
  extensions to external types in -emit-extension-block-symbols mode
- adapts some SymbolGraph tests to (additionally or exclusively) test the
  behavior with -emit-extension-block-symbols mode enabled

Bugfixes:
- fixes a bug where some conformsTo relationships implicated by the conformances
  declared on an extension to an external type were not emitted
  (see test/SymbolGraph/Relationships/ConformsTo/Indirect.swift)

Further changes:
- documents the strategy for naming and associating children declared in extensions
  to typealiases (see test/SymbolGraph/Relationships/MemberOf/Typealias.swift,
  test/SymbolGraph/Symbols/Names.swift)
2022-09-16 12:02:40 -06:00

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Swift

// RUN: %empty-directory(%t)
// RUN: %target-build-swift %s -module-name EmptyExtension -emit-module -emit-module-path %t/
// RUN: %target-swift-symbolgraph-extract -module-name EmptyExtension -I %t -pretty-print -output-dir %t
// RUN: %{python} -c 'import os.path; import sys; sys.exit(1 if os.path.exists(sys.argv[1]) else 0)' %t/EmptyExtension@Swift.symbols.json
// RUN: %empty-directory(%t)
// RUN: %target-build-swift %s -module-name EmptyExtension -emit-module -emit-module-path %t/
// RUN: %target-swift-symbolgraph-extract -module-name EmptyExtension -I %t -pretty-print -output-dir %t -emit-extension-block-symbols
// RUN: %{python} -c 'import os.path; import sys; sys.exit(1 if os.path.exists(sys.argv[1]) else 0)' %t/EmptyExtension@Swift.symbols.json
extension Sequence {
func foo() {}
}