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1 //===--- QueryParser.h - clang-query ----------------------------*- 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 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_QUERY_QUERY_PARSER_H
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10 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_QUERY_QUERY_PARSER_H
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11
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12 #include "Query.h"
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13 #include "QuerySession.h"
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14 #include "llvm/LineEditor/LineEditor.h"
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15 #include <cstddef>
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16
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17 namespace clang {
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18 namespace query {
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19
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20 class QuerySession;
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21
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22 class QueryParser {
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23 public:
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24 /// Parse \a Line as a query.
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25 ///
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26 /// \return A QueryRef representing the query, which may be an InvalidQuery.
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27 static QueryRef parse(StringRef Line, const QuerySession &QS);
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28
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29 /// Compute a list of completions for \a Line assuming a cursor at
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30 /// \param Pos characters past the start of \a Line, ordered from most
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31 /// likely to least likely.
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32 ///
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33 /// \return A vector of completions for \a Line.
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34 static std::vector<llvm::LineEditor::Completion>
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35 complete(StringRef Line, size_t Pos, const QuerySession &QS);
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36
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37 private:
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38 QueryParser(StringRef Line, const QuerySession &QS)
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39 : Line(Line), CompletionPos(nullptr), QS(QS) {}
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40
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41 StringRef lexWord();
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42
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43 template <typename T> struct LexOrCompleteWord;
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44
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45 QueryRef parseSetBool(bool QuerySession::*Var);
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46 QueryRef parseSetTraversalKind(TraversalKind QuerySession::*Var);
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47 template <typename QueryType> QueryRef parseSetOutputKind();
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48 QueryRef completeMatcherExpression();
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49
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50 QueryRef endQuery(QueryRef Q);
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51
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52 /// Parse [\p Begin,\p End).
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53 ///
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54 /// \return A reference to the parsed query object, which may be an
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55 /// \c InvalidQuery if a parse error occurs.
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56 QueryRef doParse();
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57
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58 StringRef Line;
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59
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60 const char *CompletionPos;
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61 std::vector<llvm::LineEditor::Completion> Completions;
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62
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63 const QuerySession &QS;
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64 };
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65
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66 } // namespace query
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67 } // namespace clang
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68
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69 #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_QUERY_QUERY_PARSER_H
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