blob: 5ecd7195c07b764536034cd37295aacd7a744410 [file] [log] [blame]
//===--- Protocol.cpp - Language Server Protocol Implementation -----------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains the serialization code for the LSP structs.
//
//===----------------------------------------------------------------------===//
#include "Protocol.h"
#include "Logger.h"
#include "URI.h"
#include "clang/Basic/LLVM.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/FormatVariadic.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/raw_ostream.h"
namespace clang {
namespace clangd {
using namespace llvm;
URIForFile::URIForFile(std::string AbsPath) {
assert(llvm::sys::path::is_absolute(AbsPath) && "the path is relative");
File = std::move(AbsPath);
}
bool fromJSON(const json::Value &E, URIForFile &R) {
if (auto S = E.getAsString()) {
auto U = URI::parse(*S);
if (!U) {
elog("Failed to parse URI {0}: {1}", *S, U.takeError());
return false;
}
if (U->scheme() != "file" && U->scheme() != "test") {
elog("Clangd only supports 'file' URI scheme for workspace files: {0}",
*S);
return false;
}
auto Path = URI::resolve(*U);
if (!Path) {
log("{0}", Path.takeError());
return false;
}
R = URIForFile(*Path);
return true;
}
return false;
}
json::Value toJSON(const URIForFile &U) { return U.uri(); }
llvm::raw_ostream &operator<<(llvm::raw_ostream &OS, const URIForFile &U) {
return OS << U.uri();
}
json::Value toJSON(const TextDocumentIdentifier &R) {
return json::Object{{"uri", R.uri}};
}
bool fromJSON(const json::Value &Params, TextDocumentIdentifier &R) {
json::ObjectMapper O(Params);
return O && O.map("uri", R.uri);
}
bool fromJSON(const json::Value &Params, Position &R) {
json::ObjectMapper O(Params);
return O && O.map("line", R.line) && O.map("character", R.character);
}
json::Value toJSON(const Position &P) {
return json::Object{
{"line", P.line},
{"character", P.character},
};
}
llvm::raw_ostream &operator<<(llvm::raw_ostream &OS, const Position &P) {
return OS << P.line << ':' << P.character;
}
bool fromJSON(const json::Value &Params, Range &R) {
json::ObjectMapper O(Params);
return O && O.map("start", R.start) && O.map("end", R.end);
}
json::Value toJSON(const Range &P) {
return json::Object{
{"start", P.start},
{"end", P.end},
};
}
llvm::raw_ostream &operator<<(llvm::raw_ostream &OS, const Range &R) {
return OS << R.start << '-' << R.end;
}
json::Value toJSON(const Location &P) {
return json::Object{
{"uri", P.uri},
{"range", P.range},
};
}
llvm::raw_ostream &operator<<(llvm::raw_ostream &OS, const Location &L) {
return OS << L.range << '@' << L.uri;
}
bool fromJSON(const json::Value &Params, TextDocumentItem &R) {
json::ObjectMapper O(Params);
return O && O.map("uri", R.uri) && O.map("languageId", R.languageId) &&
O.map("version", R.version) && O.map("text", R.text);
}
bool fromJSON(const json::Value &Params, Metadata &R) {
json::ObjectMapper O(Params);
if (!O)
return false;
O.map("extraFlags", R.extraFlags);
return true;
}
bool fromJSON(const json::Value &Params, TextEdit &R) {
json::ObjectMapper O(Params);
return O && O.map("range", R.range) && O.map("newText", R.newText);
}
json::Value toJSON(const TextEdit &P) {
return json::Object{
{"range", P.range},
{"newText", P.newText},
};
}
llvm::raw_ostream &operator<<(llvm::raw_ostream &OS, const TextEdit &TE) {
OS << TE.range << " => \"";
printEscapedString(TE.newText, OS);
return OS << '"';
}
bool fromJSON(const json::Value &E, TraceLevel &Out) {
if (auto S = E.getAsString()) {
if (*S == "off") {
Out = TraceLevel::Off;
return true;
} else if (*S == "messages") {
Out = TraceLevel::Messages;
return true;
} else if (*S == "verbose") {
Out = TraceLevel::Verbose;
return true;
}
}
return false;
}
bool fromJSON(const json::Value &Params, CompletionItemClientCapabilities &R) {
json::ObjectMapper O(Params);
if (!O)
return false;
O.map("snippetSupport", R.snippetSupport);
O.map("commitCharacterSupport", R.commitCharacterSupport);
return true;
}
bool fromJSON(const json::Value &Params, CompletionClientCapabilities &R) {
json::ObjectMapper O(Params);
if (!O)
return false;
O.map("dynamicRegistration", R.dynamicRegistration);
O.map("completionItem", R.completionItem);
O.map("contextSupport", R.contextSupport);
return true;
}
bool fromJSON(const json::Value &E, SymbolKind &Out) {
if (auto T = E.getAsInteger()) {
if (*T < static_cast<int>(SymbolKind::File) ||
*T > static_cast<int>(SymbolKind::TypeParameter))
return false;
Out = static_cast<SymbolKind>(*T);
return true;
}
return false;
}
bool fromJSON(const json::Value &E, std::vector<SymbolKind> &Out) {
if (auto *A = E.getAsArray()) {
Out.clear();
for (size_t I = 0; I < A->size(); ++I) {
SymbolKind KindOut;
if (fromJSON((*A)[I], KindOut))
Out.push_back(KindOut);
}
return true;
}
return false;
}
bool fromJSON(const json::Value &Params, SymbolKindCapabilities &R) {
json::ObjectMapper O(Params);
return O && O.map("valueSet", R.valueSet);
}
SymbolKind adjustKindToCapability(SymbolKind Kind,
SymbolKindBitset &SupportedSymbolKinds) {
auto KindVal = static_cast<size_t>(Kind);
if (KindVal >= SymbolKindMin && KindVal <= SupportedSymbolKinds.size() &&
SupportedSymbolKinds[KindVal])
return Kind;
switch (Kind) {
// Provide some fall backs for common kinds that are close enough.
case SymbolKind::Struct:
return SymbolKind::Class;
case SymbolKind::EnumMember:
return SymbolKind::Enum;
default:
return SymbolKind::String;
}
}
bool fromJSON(const json::Value &Params, WorkspaceSymbolCapabilities &R) {
json::ObjectMapper O(Params);
return O && O.map("symbolKind", R.symbolKind);
}
bool fromJSON(const json::Value &Params, WorkspaceClientCapabilities &R) {
json::ObjectMapper O(Params);
return O && O.map("symbol", R.symbol);
}
bool fromJSON(const json::Value &Params, TextDocumentClientCapabilities &R) {
json::ObjectMapper O(Params);
if (!O)
return false;
O.map("completion", R.completion);
return true;
}
bool fromJSON(const json::Value &Params, ClientCapabilities &R) {
json::ObjectMapper O(Params);
if (!O)
return false;
O.map("textDocument", R.textDocument);
O.map("workspace", R.workspace);
return true;
}
bool fromJSON(const json::Value &Params, InitializeParams &R) {
json::ObjectMapper O(Params);
if (!O)
return false;
// We deliberately don't fail if we can't parse individual fields.
// Failing to handle a slightly malformed initialize would be a disaster.
O.map("processId", R.processId);
O.map("rootUri", R.rootUri);
O.map("rootPath", R.rootPath);
O.map("capabilities", R.capabilities);
O.map("trace", R.trace);
O.map("initializationOptions", R.initializationOptions);
return true;
}
bool fromJSON(const json::Value &Params, DidOpenTextDocumentParams &R) {
json::ObjectMapper O(Params);
return O && O.map("textDocument", R.textDocument) &&
O.map("metadata", R.metadata);
}
bool fromJSON(const json::Value &Params, DidCloseTextDocumentParams &R) {
json::ObjectMapper O(Params);
return O && O.map("textDocument", R.textDocument);
}
bool fromJSON(const json::Value &Params, DidChangeTextDocumentParams &R) {
json::ObjectMapper O(Params);
return O && O.map("textDocument", R.textDocument) &&
O.map("contentChanges", R.contentChanges) &&
O.map("wantDiagnostics", R.wantDiagnostics);
}
bool fromJSON(const json::Value &E, FileChangeType &Out) {
if (auto T = E.getAsInteger()) {
if (*T < static_cast<int>(FileChangeType::Created) ||
*T > static_cast<int>(FileChangeType::Deleted))
return false;
Out = static_cast<FileChangeType>(*T);
return true;
}
return false;
}
bool fromJSON(const json::Value &Params, FileEvent &R) {
json::ObjectMapper O(Params);
return O && O.map("uri", R.uri) && O.map("type", R.type);
}
bool fromJSON(const json::Value &Params, DidChangeWatchedFilesParams &R) {
json::ObjectMapper O(Params);
return O && O.map("changes", R.changes);
}
bool fromJSON(const json::Value &Params, TextDocumentContentChangeEvent &R) {
json::ObjectMapper O(Params);
return O && O.map("range", R.range) && O.map("rangeLength", R.rangeLength) &&
O.map("text", R.text);
}
bool fromJSON(const json::Value &Params, FormattingOptions &R) {
json::ObjectMapper O(Params);
return O && O.map("tabSize", R.tabSize) &&
O.map("insertSpaces", R.insertSpaces);
}
json::Value toJSON(const FormattingOptions &P) {
return json::Object{
{"tabSize", P.tabSize},
{"insertSpaces", P.insertSpaces},
};
}
bool fromJSON(const json::Value &Params, DocumentRangeFormattingParams &R) {
json::ObjectMapper O(Params);
return O && O.map("textDocument", R.textDocument) &&
O.map("range", R.range) && O.map("options", R.options);
}
bool fromJSON(const json::Value &Params, DocumentOnTypeFormattingParams &R) {
json::ObjectMapper O(Params);
return O && O.map("textDocument", R.textDocument) &&
O.map("position", R.position) && O.map("ch", R.ch) &&
O.map("options", R.options);
}
bool fromJSON(const json::Value &Params, DocumentFormattingParams &R) {
json::ObjectMapper O(Params);
return O && O.map("textDocument", R.textDocument) &&
O.map("options", R.options);
}
bool fromJSON(const json::Value &Params, DocumentSymbolParams &R) {
json::ObjectMapper O(Params);
return O && O.map("textDocument", R.textDocument);
}
bool fromJSON(const json::Value &Params, Diagnostic &R) {
json::ObjectMapper O(Params);
if (!O || !O.map("range", R.range) || !O.map("message", R.message))
return false;
O.map("severity", R.severity);
return true;
}
bool fromJSON(const json::Value &Params, CodeActionContext &R) {
json::ObjectMapper O(Params);
return O && O.map("diagnostics", R.diagnostics);
}
llvm::raw_ostream &operator<<(llvm::raw_ostream &OS, const Diagnostic &D) {
OS << D.range << " [";
switch (D.severity) {
case 1:
OS << "error";
break;
case 2:
OS << "warning";
break;
case 3:
OS << "note";
break;
case 4:
OS << "remark";
break;
default:
OS << "diagnostic";
break;
}
return OS << '(' << D.severity << "): " << D.message << "]";
}
bool fromJSON(const json::Value &Params, CodeActionParams &R) {
json::ObjectMapper O(Params);
return O && O.map("textDocument", R.textDocument) &&
O.map("range", R.range) && O.map("context", R.context);
}
bool fromJSON(const json::Value &Params, WorkspaceEdit &R) {
json::ObjectMapper O(Params);
return O && O.map("changes", R.changes);
}
const llvm::StringLiteral ExecuteCommandParams::CLANGD_APPLY_FIX_COMMAND =
"clangd.applyFix";
bool fromJSON(const json::Value &Params, ExecuteCommandParams &R) {
json::ObjectMapper O(Params);
if (!O || !O.map("command", R.command))
return false;
auto Args = Params.getAsObject()->getArray("arguments");
if (R.command == ExecuteCommandParams::CLANGD_APPLY_FIX_COMMAND) {
return Args && Args->size() == 1 &&
fromJSON(Args->front(), R.workspaceEdit);
}
return false; // Unrecognized command.
}
json::Value toJSON(const SymbolInformation &P) {
return json::Object{
{"name", P.name},
{"kind", static_cast<int>(P.kind)},
{"location", P.location},
{"containerName", P.containerName},
};
}
llvm::raw_ostream &operator<<(llvm::raw_ostream &O,
const SymbolInformation &SI) {
O << SI.containerName << "::" << SI.name << " - " << toJSON(SI);
return O;
}
bool fromJSON(const json::Value &Params, WorkspaceSymbolParams &R) {
json::ObjectMapper O(Params);
return O && O.map("query", R.query);
}
json::Value toJSON(const Command &C) {
auto Cmd = json::Object{{"title", C.title}, {"command", C.command}};
if (C.workspaceEdit)
Cmd["arguments"] = {*C.workspaceEdit};
return std::move(Cmd);
}
json::Value toJSON(const WorkspaceEdit &WE) {
if (!WE.changes)
return json::Object{};
json::Object FileChanges;
for (auto &Change : *WE.changes)
FileChanges[Change.first] = json::Array(Change.second);
return json::Object{{"changes", std::move(FileChanges)}};
}
json::Value toJSON(const ApplyWorkspaceEditParams &Params) {
return json::Object{{"edit", Params.edit}};
}
bool fromJSON(const json::Value &Params, TextDocumentPositionParams &R) {
json::ObjectMapper O(Params);
return O && O.map("textDocument", R.textDocument) &&
O.map("position", R.position);
}
static StringRef toTextKind(MarkupKind Kind) {
switch (Kind) {
case MarkupKind::PlainText:
return "plaintext";
case MarkupKind::Markdown:
return "markdown";
}
llvm_unreachable("Invalid MarkupKind");
}
json::Value toJSON(const MarkupContent &MC) {
if (MC.value.empty())
return nullptr;
return json::Object{
{"kind", toTextKind(MC.kind)},
{"value", MC.value},
};
}
json::Value toJSON(const Hover &H) {
json::Object Result{{"contents", toJSON(H.contents)}};
if (H.range.hasValue())
Result["range"] = toJSON(*H.range);
return std::move(Result);
}
json::Value toJSON(const CompletionItem &CI) {
assert(!CI.label.empty() && "completion item label is required");
json::Object Result{{"label", CI.label}};
if (CI.kind != CompletionItemKind::Missing)
Result["kind"] = static_cast<int>(CI.kind);
if (!CI.detail.empty())
Result["detail"] = CI.detail;
if (!CI.documentation.empty())
Result["documentation"] = CI.documentation;
if (!CI.sortText.empty())
Result["sortText"] = CI.sortText;
if (!CI.filterText.empty())
Result["filterText"] = CI.filterText;
if (!CI.insertText.empty())
Result["insertText"] = CI.insertText;
if (CI.insertTextFormat != InsertTextFormat::Missing)
Result["insertTextFormat"] = static_cast<int>(CI.insertTextFormat);
if (CI.textEdit)
Result["textEdit"] = *CI.textEdit;
if (!CI.additionalTextEdits.empty())
Result["additionalTextEdits"] = json::Array(CI.additionalTextEdits);
return std::move(Result);
}
llvm::raw_ostream &operator<<(llvm::raw_ostream &O, const CompletionItem &I) {
O << I.label << " - " << toJSON(I);
return O;
}
bool operator<(const CompletionItem &L, const CompletionItem &R) {
return (L.sortText.empty() ? L.label : L.sortText) <
(R.sortText.empty() ? R.label : R.sortText);
}
json::Value toJSON(const CompletionList &L) {
return json::Object{
{"isIncomplete", L.isIncomplete},
{"items", json::Array(L.items)},
};
}
json::Value toJSON(const ParameterInformation &PI) {
assert(!PI.label.empty() && "parameter information label is required");
json::Object Result{{"label", PI.label}};
if (!PI.documentation.empty())
Result["documentation"] = PI.documentation;
return std::move(Result);
}
json::Value toJSON(const SignatureInformation &SI) {
assert(!SI.label.empty() && "signature information label is required");
json::Object Result{
{"label", SI.label},
{"parameters", json::Array(SI.parameters)},
};
if (!SI.documentation.empty())
Result["documentation"] = SI.documentation;
return std::move(Result);
}
llvm::raw_ostream &operator<<(llvm::raw_ostream &O,
const SignatureInformation &I) {
O << I.label << " - " << toJSON(I);
return O;
}
json::Value toJSON(const SignatureHelp &SH) {
assert(SH.activeSignature >= 0 &&
"Unexpected negative value for number of active signatures.");
assert(SH.activeParameter >= 0 &&
"Unexpected negative value for active parameter index");
return json::Object{
{"activeSignature", SH.activeSignature},
{"activeParameter", SH.activeParameter},
{"signatures", json::Array(SH.signatures)},
};
}
bool fromJSON(const json::Value &Params, RenameParams &R) {
json::ObjectMapper O(Params);
return O && O.map("textDocument", R.textDocument) &&
O.map("position", R.position) && O.map("newName", R.newName);
}
json::Value toJSON(const DocumentHighlight &DH) {
return json::Object{
{"range", toJSON(DH.range)},
{"kind", static_cast<int>(DH.kind)},
};
}
llvm::raw_ostream &operator<<(llvm::raw_ostream &O,
const DocumentHighlight &V) {
O << V.range;
if (V.kind == DocumentHighlightKind::Read)
O << "(r)";
if (V.kind == DocumentHighlightKind::Write)
O << "(w)";
return O;
}
bool fromJSON(const json::Value &Params, DidChangeConfigurationParams &CCP) {
json::ObjectMapper O(Params);
return O && O.map("settings", CCP.settings);
}
bool fromJSON(const json::Value &Params,
ClangdConfigurationParamsChange &CCPC) {
json::ObjectMapper O(Params);
return O && O.map("compilationDatabasePath", CCPC.compilationDatabasePath);
}
} // namespace clangd
} // namespace clang