mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-24 20:00:12 +01:00
Richard Smith
03939a9223
Add hover cards and jump to declaration / definition / reference for the formatted SemIR that appears in check tests. This is done by adding a heuristic "parser" for SemIR to the language server. The cross-references are strictly best-effort, since this is just a tool for Carbon developers, not a user-facing facility. A couple of other changes made along the way: * file_test tests with an AUTOUPDATE-SPLIT no longer look for CHECK: lines outside that split. This was motivated by the tests for this new facility including CHECK: lines as part of the test input. * An agent skill for working on the language server, tracking some things that cost Claude time when working on this. Assisted-by: Claude via Antigravity
64 lines
1.9 KiB
C++
64 lines
1.9 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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if (file->is_test_file()) {
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// A test file isn't Carbon source, so it has no parse tree to format from,
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// and reformatting one as if it were would destroy it.
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on_done(std::vector<clang::clangd::TextEdit>());
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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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