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1 //===--- CodeCompletionStrings.h ---------------------------------*- C++-*-===//
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2 //
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3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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4 // See https://llvm.org/LICENSE.txt for license information.
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5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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6 //
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7 //===----------------------------------------------------------------------===//
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8 //
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9 // Functions for retrieving code completion information from
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10 // `CodeCompletionString`.
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11 //
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12 //===----------------------------------------------------------------------===//
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13
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14 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANGD_CODECOMPLETIONSTRINGS_H
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15 #define LLVM_CLANG_TOOLS_EXTRA_CLANGD_CODECOMPLETIONSTRINGS_H
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16
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17 #include "clang/Sema/CodeCompleteConsumer.h"
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18
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19 namespace clang {
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20 class ASTContext;
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21
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22 namespace clangd {
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23
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24 /// Gets a minimally formatted documentation comment of \p Result, with comment
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25 /// markers stripped. See clang::RawComment::getFormattedText() for the detailed
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26 /// explanation of how the comment text is transformed.
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27 /// Returns empty string when no comment is available.
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28 /// If \p CommentsFromHeaders parameter is set, only comments from the main
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29 /// file will be returned. It is used to workaround crashes when parsing
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30 /// comments in the stale headers, coming from completion preamble.
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31 std::string getDocComment(const ASTContext &Ctx,
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32 const CodeCompletionResult &Result,
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33 bool CommentsFromHeaders);
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34
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35 /// Similar to getDocComment, but returns the comment for a NamedDecl.
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36 std::string getDeclComment(const ASTContext &Ctx, const NamedDecl &D);
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37
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38 /// Formats the signature for an item, as a display string and snippet.
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39 /// e.g. for const_reference std::vector<T>::at(size_type) const, this returns:
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40 /// *Signature = "(size_type) const"
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41 /// *Snippet = "(${1:size_type})"
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42 /// If set, RequiredQualifiers is the text that must be typed before the name.
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43 /// e.g "Base::" when calling a base class member function that's hidden.
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44 ///
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45 /// When \p CompletingPattern is true, the last placeholder will be of the form
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46 /// ${0:…}, indicating the cursor should stay there.
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47 void getSignature(const CodeCompletionString &CCS, std::string *Signature,
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48 std::string *Snippet,
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49 std::string *RequiredQualifiers = nullptr,
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50 bool CompletingPattern = false);
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51
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52 /// Assembles formatted documentation for a completion result. This includes
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53 /// documentation comments and other relevant information like annotations.
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54 ///
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55 /// \param DocComment is a documentation comment for the original declaration,
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56 /// it should be obtained via getDocComment or getParameterDocComment.
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57 std::string formatDocumentation(const CodeCompletionString &CCS,
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58 llvm::StringRef DocComment);
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59
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60 /// Gets detail to be used as the detail field in an LSP completion item. This
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61 /// is usually the return type of a function.
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62 std::string getReturnType(const CodeCompletionString &CCS);
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63
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64 } // namespace clangd
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65 } // namespace clang
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66
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67 #endif // LLVM_CLANG_TOOLS_EXTRA_CLANGD_CODECOMPLETIONSTRINGS_H
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