mirror of
https://github.com/MaskRay/ccls.git
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235 lines
8.5 KiB
C++
235 lines
8.5 KiB
C++
#include "clang_complete.h"
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#include "lsp_code_action.h"
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#include "message_handler.h"
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#include "query_utils.h"
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#include "queue_manager.h"
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namespace {
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MethodType kMethodType = "textDocument/codeLens";
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struct lsDocumentCodeLensParams {
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lsTextDocumentIdentifier textDocument;
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};
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MAKE_REFLECT_STRUCT(lsDocumentCodeLensParams, textDocument);
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using TCodeLens = lsCodeLens<lsCodeLensUserData, lsCodeLensCommandArguments>;
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struct In_TextDocumentCodeLens : public RequestMessage {
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MethodType GetMethodType() const override { return kMethodType; }
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lsDocumentCodeLensParams params;
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};
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MAKE_REFLECT_STRUCT(In_TextDocumentCodeLens, id, params);
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REGISTER_IN_MESSAGE(In_TextDocumentCodeLens);
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struct Out_TextDocumentCodeLens
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: public lsOutMessage<Out_TextDocumentCodeLens> {
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lsRequestId id;
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std::vector<lsCodeLens<lsCodeLensUserData, lsCodeLensCommandArguments>>
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result;
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};
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MAKE_REFLECT_STRUCT(Out_TextDocumentCodeLens, jsonrpc, id, result);
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struct CommonCodeLensParams {
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std::vector<TCodeLens>* result;
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QueryDatabase* db;
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WorkingFiles* working_files;
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WorkingFile* working_file;
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};
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Use OffsetStartColumn(Use use, int16_t offset) {
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use.range.start.column += offset;
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return use;
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}
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void AddCodeLens(const char* singular,
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const char* plural,
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CommonCodeLensParams* common,
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Use use,
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const std::vector<Use>& uses,
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bool force_display) {
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TCodeLens code_lens;
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optional<lsRange> range = GetLsRange(common->working_file, use.range);
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if (!range)
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return;
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if (use.file == QueryFileId())
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return;
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code_lens.range = *range;
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code_lens.command = lsCommand<lsCodeLensCommandArguments>();
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code_lens.command->command = "cquery.showReferences";
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code_lens.command->arguments.uri = GetLsDocumentUri(common->db, use.file);
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code_lens.command->arguments.position = code_lens.range.start;
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// Add unique uses.
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std::unordered_set<lsLocation> unique_uses;
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for (Use use1 : uses) {
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optional<lsLocation> location =
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GetLsLocation(common->db, common->working_files, use1);
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if (!location)
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continue;
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unique_uses.insert(*location);
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}
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code_lens.command->arguments.locations.assign(unique_uses.begin(),
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unique_uses.end());
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// User visible label
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size_t num_usages = unique_uses.size();
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code_lens.command->title = std::to_string(num_usages) + " ";
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if (num_usages == 1)
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code_lens.command->title += singular;
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else
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code_lens.command->title += plural;
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if (force_display || unique_uses.size() > 0)
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common->result->push_back(code_lens);
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}
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struct Handler_TextDocumentCodeLens
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: BaseMessageHandler<In_TextDocumentCodeLens> {
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MethodType GetMethodType() const override { return kMethodType; }
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void Run(In_TextDocumentCodeLens* request) override {
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Out_TextDocumentCodeLens out;
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out.id = request->id;
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lsDocumentUri file_as_uri = request->params.textDocument.uri;
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std::string path = file_as_uri.GetPath();
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clang_complete->NotifyView(path);
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QueryFile* file;
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if (!FindFileOrFail(db, project, request->id,
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request->params.textDocument.uri.GetPath(), &file)) {
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return;
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}
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CommonCodeLensParams common;
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common.result = &out.result;
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common.db = db;
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common.working_files = working_files;
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common.working_file = working_files->GetFileByFilename(file->def->path);
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for (SymbolRef sym : file->def->outline) {
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// NOTE: We OffsetColumn so that the code lens always show up in a
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// predictable order. Otherwise, the client may randomize it.
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Use use(sym.range, sym.id, sym.kind, sym.role, file->def->file);
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switch (sym.kind) {
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case SymbolKind::Type: {
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QueryType& type = db->GetType(sym);
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const QueryType::Def* def = type.AnyDef();
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if (!def || def->kind == lsSymbolKind::Namespace)
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continue;
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AddCodeLens("ref", "refs", &common, OffsetStartColumn(use, 0),
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type.uses, true /*force_display*/);
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AddCodeLens("derived", "derived", &common, OffsetStartColumn(use, 1),
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GetDeclarations(db, type.derived),
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false /*force_display*/);
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AddCodeLens("var", "vars", &common, OffsetStartColumn(use, 2),
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GetDeclarations(db, type.instances),
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false /*force_display*/);
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break;
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}
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case SymbolKind::Func: {
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QueryFunc& func = db->GetFunc(sym);
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const QueryFunc::Def* def = func.AnyDef();
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if (!def)
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continue;
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int16_t offset = 0;
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// For functions, the outline will report a location that is using the
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// extent since that is better for outline. This tries to convert the
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// extent location to the spelling location.
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auto try_ensure_spelling = [&](Use use) {
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Maybe<Use> def = GetDefinitionSpell(db, use);
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if (!def || def->range.start.line != use.range.start.line) {
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return use;
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}
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return *def;
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};
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std::vector<Use> base_callers = GetUsesForAllBases(db, func);
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std::vector<Use> derived_callers = GetUsesForAllDerived(db, func);
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if (base_callers.empty() && derived_callers.empty()) {
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Use loc = try_ensure_spelling(use);
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AddCodeLens("call", "calls", &common,
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OffsetStartColumn(loc, offset++), func.uses,
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true /*force_display*/);
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} else {
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Use loc = try_ensure_spelling(use);
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AddCodeLens("direct call", "direct calls", &common,
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OffsetStartColumn(loc, offset++), func.uses,
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false /*force_display*/);
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if (!base_callers.empty())
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AddCodeLens("base call", "base calls", &common,
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OffsetStartColumn(loc, offset++), base_callers,
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false /*force_display*/);
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if (!derived_callers.empty())
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AddCodeLens("derived call", "derived calls", &common,
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OffsetStartColumn(loc, offset++), derived_callers,
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false /*force_display*/);
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}
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AddCodeLens(
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"derived", "derived", &common, OffsetStartColumn(use, offset++),
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GetDeclarations(db, func.derived), false /*force_display*/);
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// "Base"
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if (def->bases.size() == 1) {
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Maybe<Use> base_loc = GetDefinitionSpell(
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db, SymbolIdx{def->bases[0], SymbolKind::Func});
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if (base_loc) {
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optional<lsLocation> ls_base =
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GetLsLocation(db, working_files, *base_loc);
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if (ls_base) {
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optional<lsRange> range =
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GetLsRange(common.working_file, sym.range);
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if (range) {
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TCodeLens code_lens;
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code_lens.range = *range;
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code_lens.range.start.character += offset++;
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code_lens.command = lsCommand<lsCodeLensCommandArguments>();
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code_lens.command->title = "Base";
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code_lens.command->command = "cquery.goto";
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code_lens.command->arguments.uri = ls_base->uri;
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code_lens.command->arguments.position = ls_base->range.start;
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out.result.push_back(code_lens);
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}
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}
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}
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} else {
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AddCodeLens("base", "base", &common, OffsetStartColumn(use, 1),
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GetDeclarations(db, def->bases),
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false /*force_display*/);
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}
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break;
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}
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case SymbolKind::Var: {
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QueryVar& var = db->GetVar(sym);
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const QueryVar::Def* def = var.AnyDef();
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if (!def || (def->is_local() && !config->codeLens.localVariables))
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continue;
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bool force_display = true;
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// Do not show 0 refs on macro with no uses, as it is most likely
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// a header guard.
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if (def->kind == lsSymbolKind::Macro)
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force_display = false;
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AddCodeLens("ref", "refs", &common, OffsetStartColumn(use, 0),
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var.uses, force_display);
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break;
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}
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case SymbolKind::File:
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case SymbolKind::Invalid: {
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assert(false && "unexpected");
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break;
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}
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};
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}
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QueueManager::WriteStdout(kMethodType, out);
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}
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};
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REGISTER_MESSAGE_HANDLER(Handler_TextDocumentCodeLens);
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} // namespace
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