forked from OSchip/llvm-project
57 lines
2.2 KiB
C++
57 lines
2.2 KiB
C++
//===--- Merge.h -------------------------------------------------*- 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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#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANGD_INDEX_MERGE_H
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#define LLVM_CLANG_TOOLS_EXTRA_CLANGD_INDEX_MERGE_H
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#include "Index.h"
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namespace clang {
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namespace clangd {
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// Merge symbols L and R, preferring data from L in case of conflict.
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// The two symbols must have the same ID.
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// Returned symbol may contain data owned by either source.
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Symbol mergeSymbol(const Symbol &L, const Symbol &R);
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// MergedIndex is a composite index based on two provided Indexes:
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// - the Dynamic index covers few files, but is relatively up-to-date.
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// - the Static index covers a bigger set of files, but is relatively stale.
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// The returned index attempts to combine results, and avoid duplicates.
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//
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// FIXME: We don't have a mechanism in Index to track deleted symbols and
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// refs in dirty files, so the merged index may return stale symbols
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// and refs from Static index.
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class MergedIndex : public SymbolIndex {
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const SymbolIndex *Dynamic, *Static;
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public:
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// The constructor does not access the symbols.
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// It's safe to inherit from this class and pass pointers to derived members.
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MergedIndex(const SymbolIndex *Dynamic, const SymbolIndex *Static)
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: Dynamic(Dynamic), Static(Static) {}
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bool fuzzyFind(const FuzzyFindRequest &,
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llvm::function_ref<void(const Symbol &)>) const override;
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void lookup(const LookupRequest &,
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llvm::function_ref<void(const Symbol &)>) const override;
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bool refs(const RefsRequest &,
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llvm::function_ref<void(const Ref &)>) const override;
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void relations(const RelationsRequest &,
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llvm::function_ref<void(const SymbolID &, const Symbol &)>)
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const override;
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size_t estimateMemoryUsage() const override {
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return Dynamic->estimateMemoryUsage() + Static->estimateMemoryUsage();
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}
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};
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} // namespace clangd
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} // namespace clang
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#endif // LLVM_CLANG_TOOLS_EXTRA_CLANGD_INDEX_MERGE_H
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