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85 lines
3.0 KiB
C++
85 lines
3.0 KiB
C++
// Copyright 2017-2018 ccls Authors
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// SPDX-License-Identifier: Apache-2.0
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#pragma once
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#include "lsp.hh"
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#include "utils.hh"
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#include <mutex>
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#include <optional>
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#include <string>
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#include <unordered_map>
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namespace ccls {
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struct WorkingFile {
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int64_t timestamp = 0;
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int version = 0;
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std::string filename;
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std::string buffer_content;
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// Note: This assumes 0-based lines (1-based lines are normally assumed).
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std::vector<std::string> index_lines;
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// Note: This assumes 0-based lines (1-based lines are normally assumed).
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std::vector<std::string> buffer_lines;
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// Mappings between index line number and buffer line number.
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// Empty indicates either buffer or index has been changed and re-computation
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// is required.
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// For index_to_buffer[i] == j, if j >= 0, we are confident that index line
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// i maps to buffer line j; if j == -1, FindMatchingLine will use the nearest
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// confident lines to resolve its line number.
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std::vector<int> index_to_buffer;
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std::vector<int> buffer_to_index;
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// A set of diagnostics that have been reported for this file.
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std::vector<Diagnostic> diagnostics;
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WorkingFile(const std::string &filename, const std::string &buffer_content);
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// This should be called when the indexed content has changed.
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void setIndexContent(const std::string &index_content);
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// This should be called whenever |buffer_content| has changed.
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void onBufferContentUpdated();
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// Finds the buffer line number which maps to index line number |line|.
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// Also resolves |column| if not NULL.
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// When resolving a range, use is_end = false for begin() and is_end =
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// true for end() to get a better alignment of |column|.
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std::optional<int> getBufferPosFromIndexPos(int line, int *column,
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bool is_end);
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// Finds the index line number which maps to buffer line number |line|.
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// Also resolves |column| if not NULL.
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std::optional<int> getIndexPosFromBufferPos(int line, int *column,
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bool is_end);
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// Returns the stable completion position (it jumps back until there is a
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// non-alphanumeric character).
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Position getCompletionPosition(Position pos, std::string *filter) const;
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private:
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// Compute index_to_buffer and buffer_to_index.
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void computeLineMapping();
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};
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struct WorkingFiles {
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WorkingFile *getFile(const std::string &path);
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WorkingFile *getFileUnlocked(const std::string &path);
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std::string getContent(const std::string &path);
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template <typename Fn> void withLock(Fn &&fn) {
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std::lock_guard lock(mutex);
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fn();
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}
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WorkingFile *onOpen(const TextDocumentItem &open);
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void onChange(const TextDocumentDidChangeParam &change);
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void onClose(const std::string &close);
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std::mutex mutex;
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std::unordered_map<std::string, std::unique_ptr<WorkingFile>> files;
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};
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int getOffsetForPosition(Position pos, std::string_view content);
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std::string_view lexIdentifierAroundPos(Position position,
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std::string_view content);
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} // namespace ccls
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