[clang] Use value instead of getValue (NFC)

Revert "Don't use Optional::hasValue (NFC)"

This reverts commit aa8feeefd3ac6c78ee8f67bf033976fc7d68bc6d.

Don't use Optional::hasValue (NFC)

[clang] Use value_or instead of getValueOr (NFC)

[clang][extract-api] Don't emit symbols prefixed with an underscore

These symbols are understood to not be used for client API consumption
by convention so they should not appear in the generated sy

[clang][extract-api] Don't emit symbols prefixed with an underscore

These symbols are understood to not be used for client API consumption
by convention so they should not appear in the generated symbol graph.

Differential Revision: https://reviews.llvm.org/D125678

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[clang][extract-api] Emit "functionSignature" in SGF for ObjC methods.

- Split GlobalRecord into two distinct types to be able to introduce
has_function_signature type trait.
- Add has_function_sign

[clang][extract-api] Emit "functionSignature" in SGF for ObjC methods.

- Split GlobalRecord into two distinct types to be able to introduce
has_function_signature type trait.
- Add has_function_signature type trait.
- Serialize function signatures as part of serializeAPIRecord for
records that are known to have a function signature.

Differential Revision: https://reviews.llvm.org/D123304

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[clang][extract-api] Emit "navigator" property of "name" in SymbolGraph

Differential Revision: https://reviews.llvm.org/D123391

[clang][extract-api] Add Objective-C Category support

Add (partial) support for Objective-C category records in ExtractAPI.
The current ExtractAPI collects everything for an Objective-C category,
bu

[clang][extract-api] Add Objective-C Category support

Add (partial) support for Objective-C category records in ExtractAPI.
The current ExtractAPI collects everything for an Objective-C category,
but not fully serialized in the SymbolGraphSerializer. Categories
extending external interfaces are disgarded during serialization, and
categories extending known interfaces are merged (all members surfaced)
into the interfaces.

Differential Revision: https://reviews.llvm.org/D122774

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[clang][extract-api] Add support for typedefs

Typedef records consist of the symbol associated with the underlying
TypedefDecl and a SymbolReference to the underlying type. Additionally
typedefs for

[clang][extract-api] Add support for typedefs

Typedef records consist of the symbol associated with the underlying
TypedefDecl and a SymbolReference to the underlying type. Additionally
typedefs for anonymous TagTypes use the typedef'd name as the symbol
name in their respective records and USRs. As a result the declaration
fragments for the anonymous TagType are those for the associated
typedef. This means that when the user is defining a typedef to a
typedef to a anonymous type, we use a reference the anonymous TagType
itself and do not emit the typedef to the anonymous type in the
generated symbol graph, including in the type destination of further
typedef symbol records.

Differential Revision: https://reviews.llvm.org/D123019

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[clang][extract-api] Fix small issues with SymbolGraphSerializer

This includes:
- replacing "relationhips" with "relationships"
- emitting the "pathComponents" property on symbols
- emitting the "ac

[clang][extract-api] Fix small issues with SymbolGraphSerializer

This includes:
- replacing "relationhips" with "relationships"
- emitting the "pathComponents" property on symbols
- emitting the "accessLevel" property on symbols

Differential Revision: https://reviews.llvm.org/D123045

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[clang][extract-api] Add support for macros

To achieve this we hook into the preprocessor during the
ExtractAPIAction and record definitions for macros that don't get
undefined during preprocessing.

[clang][extract-api] Add Objective-C protocol support

Add support for Objective-C protocol declarations in ExtractAPI.

Depends on D122446

Differential Revision: https://reviews.llvm.org/D122511

[clang][extract-api] Add Objective-C interface support

Add support for Objective-C interface declarations in ExtractAPI.

Depends on D122495

Differential Revision: https://reviews.llvm.org/D122446

[clang][extract-api] Use correct language info from inputs

The current way of getting the `clang::Language` from `LangOptions` does
not handle Objective-C correctly because `clang::Language::ObjC` d

[clang][extract-api] Use correct language info from inputs

The current way of getting the `clang::Language` from `LangOptions` does
not handle Objective-C correctly because `clang::Language::ObjC` does
not correspond to any `LangStandard`. This patch passes the correct
`Language` from the frontend input information.

Differential Revision: https://reviews.llvm.org/D122495

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Add HLSL Language Option and Preprocessor

Bringing in HLSL as a language as well as language options for each of
the HLSL language standards.

While the HLSL language is unimplemented, this patch ad

Add HLSL Language Option and Preprocessor

Bringing in HLSL as a language as well as language options for each of
the HLSL language standards.

While the HLSL language is unimplemented, this patch adds the
HLSL-specific preprocessor defines which enables testing of the command
line options through the driver.

Reviewed By: pete, rnk

Differential Revision: https://reviews.llvm.org/D122087

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[NFC][clang][extract-api] Rename variable

Rename a local variable name to avoid potential ambiguity/conflict for
some compilers.

[clang][extract-api] Add struct support

- Add `StructFieldRecord` and `StructRecord` to store API information
for structs
- Implement `VisitRecordDecl` in `ExtractAPIVisitor`
- Implement Symbol Gr

[clang][extract-api] Add struct support

- Add `StructFieldRecord` and `StructRecord` to store API information
for structs
- Implement `VisitRecordDecl` in `ExtractAPIVisitor`
- Implement Symbol Graph serialization for struct records.
- Add test case for struct records.

Depends on D121873

Differential Revision: https://reviews.llvm.org/D122202

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[clang][extract-api] Add enum support

Add support for enum records
- Add `EnumConstantRecord` and `EnumRecord` to store API information for
enums
- Implement `VisitEnumDecl` in `ExtractAPIVisitor`

[clang][extract-api] Add enum support

Add support for enum records
- Add `EnumConstantRecord` and `EnumRecord` to store API information for
enums
- Implement `VisitEnumDecl` in `ExtractAPIVisitor`
- Implement serializatin for enum records and `MemberOf` relationship
- Add test case for enum records
- Few other improvements

Depends on D122160

Differential Revision: https://reviews.llvm.org/D121873

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[clang][extract-api] Suppprt for the module name property in SymbolGraph

Adds `--product-name=` flag to the clang driver. This gets forwarded to
cc1 only when we are performing a ExtractAPI Action.

[clang][extract-api] Suppprt for the module name property in SymbolGraph

Adds `--product-name=` flag to the clang driver. This gets forwarded to
cc1 only when we are performing a ExtractAPI Action. This is used to
populate the `name` field of the module object in the generated SymbolGraph.

Differential Revision: https://reviews.llvm.org/D122141

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[NFC][clang][extract-api] Use proper name string for Objective-C language

Change the Symbol Graph serializer for ExtractAPI to use `objective-c`
for the language name string for Objective-C, to alig

[NFC][clang][extract-api] Use proper name string for Objective-C language

Change the Symbol Graph serializer for ExtractAPI to use `objective-c`
for the language name string for Objective-C, to align with clang
frontend standards.

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[clang][extract-api] Refactor ExtractAPI and improve docs

- The name SymbolGraph is inappropriate and confusing for the new library
for clang-extract-api. Refactor and rename things to make it cle

[clang][extract-api] Refactor ExtractAPI and improve docs

- The name SymbolGraph is inappropriate and confusing for the new library
for clang-extract-api. Refactor and rename things to make it clear that
ExtractAPI is the core functionality and SymbolGraph is one serializer
for the API information.
- Add documentation comments to ExtractAPI classes and methods to improve
readability and clearness of the ExtractAPI work.

Differential Revision: https://reviews.llvm.org/D122160

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