derek.holloway
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52 lines
2.0 KiB
C++
52 lines
2.0 KiB
C++
//===--- DumpAST.h - Serialize clang AST to LSP -----------------*- C++-*--===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// Exposing clang's AST can give insight into the precise meaning of code.
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// (C++ is a complicated language, and very few people know all its rules).
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// Despite the name, clang's AST describes *semantics* and so includes nodes
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// for implicit behavior like conversions.
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//
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// It's also useful to developers who work with the clang AST specifically,
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// and want to know how certain constructs are represented.
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//
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// The main representation is not based on the familiar -ast-dump output,
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// which is heavy on internal details.
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// It also does not use the -ast-dump=json output, which captures the same
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// detail in a machine-friendly way, but requires client-side logic to present.
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// Instead, the key information is bundled into a few fields (role/kind/detail)
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// with weakly-defined semantics, optimized for easy presentation.
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// The -ast-dump output is preserved in the 'arcana' field, and may be shown
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// e.g. as a tooltip.
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//
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// The textDocument/ast method implemented here is a clangd extension.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANGD_DUMPAST_H
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#define LLVM_CLANG_TOOLS_EXTRA_CLANGD_DUMPAST_H
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#include "Protocol.h"
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#include "clang/AST/ASTContext.h"
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namespace clang {
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class DynTypedNode;
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namespace syntax {
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class TokenBuffer;
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} // namespace syntax
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namespace clangd {
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// Note: It's safe for the node to be a TranslationUnitDecl, as this function
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// does not deserialize the preamble.
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ASTNode dumpAST(const DynTypedNode &, const syntax::TokenBuffer &Tokens,
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const ASTContext &);
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} // namespace clangd
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} // namespace clang
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#endif
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