mirror of
https://github.com/carbon-language/carbon-lang.git
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DavidLoftus
dc2ee5bd5e
Implements formatting support within LSP. Current implementation performs while file formatting, we just replace file with output of Carbon::Format() https://github.com/carbon-language/carbon-lang/pull/7687 independently improves formatting so that this output is somewhat decent. Assisted-With: Gemini / Antigravity
58 lines
1.6 KiB
C++
58 lines
1.6 KiB
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#include <string>
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#include <utility>
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#include <vector>
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#include "common/raw_string_ostream.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/ADT/StringRef.h"
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#include "toolchain/format/format.h"
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#include "toolchain/language_server/handle.h"
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namespace Carbon::LanguageServer {
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// Returns the range covering the entire document text.
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static auto GetFullDocumentRange(llvm::StringRef text) -> clang::clangd::Range {
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int line_count = llvm::count(text, '\n') + 1;
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return clang::clangd::Range{
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.start = {.line = 0, .character = 0},
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.end = {.line = line_count, .character = 0},
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};
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}
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auto HandleFormatting(
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Context& context, const clang::clangd::DocumentFormattingParams& params,
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llvm::function_ref<
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auto(llvm::Expected<std::vector<clang::clangd::TextEdit>>)->void>
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on_done) -> void {
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auto* file = context.LookupFile(params.textDocument.uri.file());
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if (!file) {
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return;
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}
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RawStringOstream out;
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if (!Format::Format(file->tokens(), out)) {
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out.clear();
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on_done(std::vector<clang::clangd::TextEdit>());
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return;
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}
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std::string formatted_text = out.TakeStr();
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if (formatted_text == file->text()) {
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on_done(std::vector<clang::clangd::TextEdit>());
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return;
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}
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std::vector<clang::clangd::TextEdit> edits;
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edits.push_back(clang::clangd::TextEdit{
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.range = GetFullDocumentRange(file->text()),
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.newText = std::move(formatted_text),
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});
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on_done(std::move(edits));
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}
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} // namespace Carbon::LanguageServer
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