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Support textDocument/{formatting,onTypeFormatting,rangeFormatting}
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| /* Copyright 2017-2018 ccls Authors | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| ==============================================================================*/ | ||
|
|
||
| #include "message_handler.h" | ||
| #include "pipeline.hh" | ||
| #include "working_files.h" | ||
|
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||
| #include <clang/Format/Format.h> | ||
| #include <clang/Tooling/Core/Replacement.h> | ||
|
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| using namespace ccls; | ||
| using namespace clang; | ||
|
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||
| namespace { | ||
| const MethodType formatting = "textDocument/formatting", | ||
| onTypeFormatting = "textDocument/onTypeFormatting", | ||
| rangeFormatting = "textDocument/rangeFormatting"; | ||
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| struct lsFormattingOptions { | ||
| // Size of a tab in spaces. | ||
| int tabSize; | ||
| // Prefer spaces over tabs. | ||
| bool insertSpaces; | ||
| }; | ||
| MAKE_REFLECT_STRUCT(lsFormattingOptions, tabSize, insertSpaces); | ||
|
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| struct Out_TextDocumentFormatting | ||
| : public lsOutMessage<Out_TextDocumentFormatting> { | ||
| lsRequestId id; | ||
| std::vector<lsTextEdit> result; | ||
| }; | ||
| MAKE_REFLECT_STRUCT(Out_TextDocumentFormatting, jsonrpc, id, result); | ||
|
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||
| llvm::Expected<tooling::Replacements> | ||
| FormatCode(std::string_view code, std::string_view file, tooling::Range Range) { | ||
| StringRef Code(code.data(), code.size()), File(file.data(), file.size()); | ||
| auto Style = format::getStyle("file", File, "LLVM", Code, nullptr); | ||
| if (!Style) | ||
| return Style.takeError(); | ||
| tooling::Replacements IncludeReplaces = | ||
| format::sortIncludes(*Style, Code, {Range}, File); | ||
| auto Changed = tooling::applyAllReplacements(Code, IncludeReplaces); | ||
| if (!Changed) | ||
| return Changed.takeError(); | ||
| return IncludeReplaces.merge(format::reformat( | ||
| *Style, *Changed, | ||
| tooling::calculateRangesAfterReplacements(IncludeReplaces, {Range}), | ||
| File)); | ||
| } | ||
|
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| std::vector<lsTextEdit> | ||
| ReplacementsToEdits(std::string_view code, const tooling::Replacements &Repls) { | ||
| std::vector<lsTextEdit> ret; | ||
| int i = 0, line = 0, col = 0; | ||
| auto move = [&](int p) { | ||
| for (; i < p; i++) | ||
| if (code[i] == '\n') | ||
| line++, col = 0; | ||
| else { | ||
| if ((uint8_t)code[i] >= 128) { | ||
| while (128 <= (uint8_t)code[++i] && (uint8_t)code[i] < 192) | ||
| ; | ||
| i--; | ||
| } | ||
| col++; | ||
| } | ||
| }; | ||
| for (const auto &R : Repls) { | ||
| move(R.getOffset()); | ||
| int l = line, c = col; | ||
| move(R.getOffset() + R.getLength()); | ||
| ret.push_back({{{l, c}, {line, col}}, R.getReplacementText().str()}); | ||
| } | ||
| return ret; | ||
| } | ||
|
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||
| void Format(WorkingFile *wfile, tooling::Range range, lsRequestId id) { | ||
| std::string_view code = wfile->buffer_content; | ||
| auto ReplsOrErr = | ||
| FormatCode(code, wfile->filename, range); | ||
| if (ReplsOrErr) { | ||
| Out_TextDocumentFormatting out; | ||
| out.id = id; | ||
| out.result = ReplacementsToEdits(code, *ReplsOrErr); | ||
| pipeline::WriteStdout(formatting, out); | ||
| } else { | ||
| Out_Error err; | ||
| err.id = id; | ||
| err.error.code = lsErrorCodes::UnknownErrorCode; | ||
| err.error.message = llvm::toString(ReplsOrErr.takeError()); | ||
| pipeline::WriteStdout(kMethodType_Unknown, err); | ||
| } | ||
| } | ||
|
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| struct In_TextDocumentFormatting : public RequestInMessage { | ||
| MethodType GetMethodType() const override { return formatting; } | ||
| struct Params { | ||
| lsTextDocumentIdentifier textDocument; | ||
| lsFormattingOptions options; | ||
| } params; | ||
| }; | ||
| MAKE_REFLECT_STRUCT(In_TextDocumentFormatting::Params, textDocument, options); | ||
| MAKE_REFLECT_STRUCT(In_TextDocumentFormatting, id, params); | ||
| REGISTER_IN_MESSAGE(In_TextDocumentFormatting); | ||
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| struct Handler_TextDocumentFormatting | ||
| : BaseMessageHandler<In_TextDocumentFormatting> { | ||
| MethodType GetMethodType() const override { return formatting; } | ||
| void Run(In_TextDocumentFormatting *request) override { | ||
| auto ¶ms = request->params; | ||
| QueryFile *file; | ||
| if (!FindFileOrFail(db, project, request->id, | ||
| params.textDocument.uri.GetPath(), &file)) | ||
| return; | ||
| WorkingFile *wfile = working_files->GetFileByFilename(file->def->path); | ||
| if (!wfile) | ||
| return; | ||
| Format(wfile, {0, (unsigned)wfile->buffer_content.size()}, request->id); | ||
| } | ||
| }; | ||
| REGISTER_MESSAGE_HANDLER(Handler_TextDocumentFormatting); | ||
|
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| struct In_TextDocumentOnTypeFormatting : public RequestInMessage { | ||
| MethodType GetMethodType() const override { return onTypeFormatting; } | ||
| struct Params { | ||
| lsTextDocumentIdentifier textDocument; | ||
| lsPosition position; | ||
| std::string ch; | ||
| lsFormattingOptions options; | ||
| } params; | ||
| }; | ||
| MAKE_REFLECT_STRUCT(In_TextDocumentOnTypeFormatting::Params, textDocument, | ||
| position, ch, options); | ||
| MAKE_REFLECT_STRUCT(In_TextDocumentOnTypeFormatting, id, params); | ||
| REGISTER_IN_MESSAGE(In_TextDocumentOnTypeFormatting); | ||
|
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| struct Handler_TextDocumentOnTypeFormatting | ||
| : BaseMessageHandler<In_TextDocumentOnTypeFormatting> { | ||
| MethodType GetMethodType() const override { return onTypeFormatting; } | ||
| void Run(In_TextDocumentOnTypeFormatting *request) override { | ||
| auto ¶ms = request->params; | ||
| QueryFile *file; | ||
| if (!FindFileOrFail(db, project, request->id, | ||
| params.textDocument.uri.GetPath(), &file)) | ||
| return; | ||
| WorkingFile *wfile = working_files->GetFileByFilename(file->def->path); | ||
| if (!wfile) | ||
| return; | ||
| std::string_view code = wfile->buffer_content; | ||
| int pos = GetOffsetForPosition(params.position, code); | ||
| auto lbrace = code.find_last_of('{', pos); | ||
| if (lbrace == std::string::npos) | ||
| lbrace = pos; | ||
| Format(wfile, {(unsigned)lbrace, unsigned(pos - lbrace)}, request->id); | ||
| } | ||
| }; | ||
| REGISTER_MESSAGE_HANDLER(Handler_TextDocumentOnTypeFormatting); | ||
|
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| struct In_TextDocumentRangeFormatting : public RequestInMessage { | ||
| MethodType GetMethodType() const override { return rangeFormatting; } | ||
| struct Params { | ||
| lsTextDocumentIdentifier textDocument; | ||
| lsRange range; | ||
| lsFormattingOptions options; | ||
| } params; | ||
| }; | ||
| MAKE_REFLECT_STRUCT(In_TextDocumentRangeFormatting::Params, textDocument, range, | ||
| options); | ||
| MAKE_REFLECT_STRUCT(In_TextDocumentRangeFormatting, id, params); | ||
| REGISTER_IN_MESSAGE(In_TextDocumentRangeFormatting); | ||
|
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| struct Handler_TextDocumentRangeFormatting | ||
| : BaseMessageHandler<In_TextDocumentRangeFormatting> { | ||
| MethodType GetMethodType() const override { return rangeFormatting; } | ||
|
|
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| void Run(In_TextDocumentRangeFormatting *request) override { | ||
| auto ¶ms = request->params; | ||
| QueryFile *file; | ||
| if (!FindFileOrFail(db, project, request->id, | ||
| params.textDocument.uri.GetPath(), &file)) | ||
| return; | ||
| WorkingFile *wfile = working_files->GetFileByFilename(file->def->path); | ||
| if (!wfile) | ||
| return; | ||
| std::string_view code = wfile->buffer_content; | ||
| int begin = GetOffsetForPosition(params.range.start, code), | ||
| end = GetOffsetForPosition(params.range.end, code); | ||
| Format(wfile, {(unsigned)begin, unsigned(end - begin)}, request->id); | ||
| } | ||
| }; | ||
| REGISTER_MESSAGE_HANDLER(Handler_TextDocumentRangeFormatting); | ||
| } // namespace |