forked from OSchip/llvm-project
364 lines
11 KiB
C++
364 lines
11 KiB
C++
//===--- Protocol.cpp - Language Server Protocol Implementation -----------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains the serialization code for the LSP structs.
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//
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//===----------------------------------------------------------------------===//
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#include "Protocol.h"
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#include "clang/Basic/LLVM.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/Support/Format.h"
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#include "llvm/Support/FormatVariadic.h"
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#include "llvm/Support/Path.h"
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#include "llvm/Support/raw_ostream.h"
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namespace clang {
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namespace clangd {
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URI URI::fromUri(llvm::StringRef uri) {
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URI Result;
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Result.uri = uri;
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uri.consume_front("file://");
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// Also trim authority-less URIs
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uri.consume_front("file:");
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// For Windows paths e.g. /X:
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if (uri.size() > 2 && uri[0] == '/' && uri[2] == ':')
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uri.consume_front("/");
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// Make sure that file paths are in native separators
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Result.file = llvm::sys::path::convert_to_slash(uri);
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return Result;
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}
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URI URI::fromFile(llvm::StringRef file) {
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using namespace llvm::sys;
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URI Result;
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Result.file = file;
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Result.uri = "file://";
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// For Windows paths e.g. X:
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if (file.size() > 1 && file[1] == ':')
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Result.uri += "/";
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// Make sure that uri paths are with posix separators
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Result.uri += path::convert_to_slash(file, path::Style::posix);
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return Result;
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}
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bool fromJSON(const json::Expr &E, URI &R) {
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if (auto S = E.asString()) {
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R = URI::fromUri(*S);
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return true;
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}
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return false;
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}
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json::Expr toJSON(const URI &U) { return U.uri; }
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bool fromJSON(const json::Expr &Params, TextDocumentIdentifier &R) {
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json::ObjectMapper O(Params);
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return O && O.map("uri", R.uri);
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}
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bool fromJSON(const json::Expr &Params, Position &R) {
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json::ObjectMapper O(Params);
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return O && O.map("line", R.line) && O.map("character", R.character);
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}
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json::Expr toJSON(const Position &P) {
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return json::obj{
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{"line", P.line},
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{"character", P.character},
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};
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}
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bool fromJSON(const json::Expr &Params, Range &R) {
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json::ObjectMapper O(Params);
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return O && O.map("start", R.start) && O.map("end", R.end);
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}
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json::Expr toJSON(const Range &P) {
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return json::obj{
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{"start", P.start},
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{"end", P.end},
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};
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}
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json::Expr toJSON(const Location &P) {
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return json::obj{
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{"uri", P.uri},
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{"range", P.range},
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};
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}
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bool fromJSON(const json::Expr &Params, TextDocumentItem &R) {
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json::ObjectMapper O(Params);
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return O && O.map("uri", R.uri) && O.map("languageId", R.languageId) &&
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O.map("version", R.version) && O.map("text", R.text);
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}
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bool fromJSON(const json::Expr &Params, Metadata &R) {
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json::ObjectMapper O(Params);
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if (!O)
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return false;
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O.map("extraFlags", R.extraFlags);
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return true;
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}
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bool fromJSON(const json::Expr &Params, TextEdit &R) {
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json::ObjectMapper O(Params);
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return O && O.map("range", R.range) && O.map("newText", R.newText);
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}
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json::Expr toJSON(const TextEdit &P) {
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return json::obj{
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{"range", P.range},
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{"newText", P.newText},
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};
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}
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bool fromJSON(const json::Expr &E, TraceLevel &Out) {
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if (auto S = E.asString()) {
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if (*S == "off") {
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Out = TraceLevel::Off;
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return true;
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} else if (*S == "messages") {
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Out = TraceLevel::Messages;
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return true;
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} else if (*S == "verbose") {
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Out = TraceLevel::Verbose;
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return true;
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}
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}
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return false;
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}
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bool fromJSON(const json::Expr &Params, InitializeParams &R) {
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json::ObjectMapper O(Params);
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if (!O)
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return false;
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// We deliberately don't fail if we can't parse individual fields.
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// Failing to handle a slightly malformed initialize would be a disaster.
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O.map("processId", R.processId);
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O.map("rootUri", R.rootUri);
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O.map("rootPath", R.rootPath);
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O.map("trace", R.trace);
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// initializationOptions, capabilities unused
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return true;
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}
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bool fromJSON(const json::Expr &Params, DidOpenTextDocumentParams &R) {
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json::ObjectMapper O(Params);
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return O && O.map("textDocument", R.textDocument) &&
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O.map("metadata", R.metadata);
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}
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bool fromJSON(const json::Expr &Params, DidCloseTextDocumentParams &R) {
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json::ObjectMapper O(Params);
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return O && O.map("textDocument", R.textDocument);
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}
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bool fromJSON(const json::Expr &Params, DidChangeTextDocumentParams &R) {
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json::ObjectMapper O(Params);
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return O && O.map("textDocument", R.textDocument) &&
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O.map("contentChanges", R.contentChanges);
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}
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bool fromJSON(const json::Expr &E, FileChangeType &Out) {
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if (auto T = E.asInteger()) {
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if (*T < static_cast<int>(FileChangeType::Created) ||
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*T > static_cast<int>(FileChangeType::Deleted))
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return false;
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Out = static_cast<FileChangeType>(*T);
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return true;
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}
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return false;
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}
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bool fromJSON(const json::Expr &Params, FileEvent &R) {
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json::ObjectMapper O(Params);
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return O && O.map("uri", R.uri) && O.map("type", R.type);
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}
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bool fromJSON(const json::Expr &Params, DidChangeWatchedFilesParams &R) {
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json::ObjectMapper O(Params);
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return O && O.map("changes", R.changes);
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}
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bool fromJSON(const json::Expr &Params, TextDocumentContentChangeEvent &R) {
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json::ObjectMapper O(Params);
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return O && O.map("text", R.text);
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}
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bool fromJSON(const json::Expr &Params, FormattingOptions &R) {
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json::ObjectMapper O(Params);
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return O && O.map("tabSize", R.tabSize) &&
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O.map("insertSpaces", R.insertSpaces);
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}
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json::Expr toJSON(const FormattingOptions &P) {
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return json::obj{
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{"tabSize", P.tabSize},
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{"insertSpaces", P.insertSpaces},
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};
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}
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bool fromJSON(const json::Expr &Params, DocumentRangeFormattingParams &R) {
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json::ObjectMapper O(Params);
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return O && O.map("textDocument", R.textDocument) &&
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O.map("range", R.range) && O.map("options", R.options);
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}
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bool fromJSON(const json::Expr &Params, DocumentOnTypeFormattingParams &R) {
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json::ObjectMapper O(Params);
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return O && O.map("textDocument", R.textDocument) &&
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O.map("position", R.position) && O.map("ch", R.ch) &&
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O.map("options", R.options);
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}
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bool fromJSON(const json::Expr &Params, DocumentFormattingParams &R) {
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json::ObjectMapper O(Params);
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return O && O.map("textDocument", R.textDocument) &&
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O.map("options", R.options);
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}
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bool fromJSON(const json::Expr &Params, Diagnostic &R) {
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json::ObjectMapper O(Params);
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if (!O || !O.map("range", R.range) || !O.map("message", R.message))
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return false;
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O.map("severity", R.severity);
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return true;
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}
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bool fromJSON(const json::Expr &Params, CodeActionContext &R) {
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json::ObjectMapper O(Params);
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return O && O.map("diagnostics", R.diagnostics);
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}
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bool fromJSON(const json::Expr &Params, CodeActionParams &R) {
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json::ObjectMapper O(Params);
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return O && O.map("textDocument", R.textDocument) &&
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O.map("range", R.range) && O.map("context", R.context);
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}
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bool fromJSON(const json::Expr &Params, WorkspaceEdit &R) {
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json::ObjectMapper O(Params);
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return O && O.map("changes", R.changes);
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}
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const std::string ExecuteCommandParams::CLANGD_APPLY_FIX_COMMAND =
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"clangd.applyFix";
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bool fromJSON(const json::Expr &Params, ExecuteCommandParams &R) {
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json::ObjectMapper O(Params);
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if (!O || !O.map("command", R.command))
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return false;
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auto Args = Params.asObject()->getArray("arguments");
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if (R.command == ExecuteCommandParams::CLANGD_APPLY_FIX_COMMAND) {
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return Args && Args->size() == 1 &&
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fromJSON(Args->front(), R.workspaceEdit);
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}
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return false; // Unrecognized command.
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}
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json::Expr toJSON(const WorkspaceEdit &WE) {
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if (!WE.changes)
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return json::obj{};
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json::obj FileChanges;
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for (auto &Change : *WE.changes)
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FileChanges[Change.first] = json::ary(Change.second);
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return json::obj{{"changes", std::move(FileChanges)}};
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}
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json::Expr toJSON(const ApplyWorkspaceEditParams &Params) {
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return json::obj{{"edit", Params.edit}};
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}
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bool fromJSON(const json::Expr &Params, TextDocumentPositionParams &R) {
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json::ObjectMapper O(Params);
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return O && O.map("textDocument", R.textDocument) &&
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O.map("position", R.position);
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}
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json::Expr toJSON(const CompletionItem &CI) {
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assert(!CI.label.empty() && "completion item label is required");
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json::obj Result{{"label", CI.label}};
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if (CI.kind != CompletionItemKind::Missing)
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Result["kind"] = static_cast<int>(CI.kind);
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if (!CI.detail.empty())
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Result["detail"] = CI.detail;
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if (!CI.documentation.empty())
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Result["documentation"] = CI.documentation;
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if (!CI.sortText.empty())
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Result["sortText"] = CI.sortText;
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if (!CI.filterText.empty())
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Result["filterText"] = CI.filterText;
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if (!CI.insertText.empty())
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Result["insertText"] = CI.insertText;
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if (CI.insertTextFormat != InsertTextFormat::Missing)
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Result["insertTextFormat"] = static_cast<int>(CI.insertTextFormat);
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if (CI.textEdit)
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Result["textEdit"] = *CI.textEdit;
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if (!CI.additionalTextEdits.empty())
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Result["additionalTextEdits"] = json::ary(CI.additionalTextEdits);
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return std::move(Result);
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}
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bool operator<(const CompletionItem &L, const CompletionItem &R) {
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return (L.sortText.empty() ? L.label : L.sortText) <
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(R.sortText.empty() ? R.label : R.sortText);
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}
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json::Expr toJSON(const CompletionList &L) {
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return json::obj{
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{"isIncomplete", L.isIncomplete},
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{"items", json::ary(L.items)},
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};
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}
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json::Expr toJSON(const ParameterInformation &PI) {
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assert(!PI.label.empty() && "parameter information label is required");
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json::obj Result{{"label", PI.label}};
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if (!PI.documentation.empty())
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Result["documentation"] = PI.documentation;
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return std::move(Result);
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}
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json::Expr toJSON(const SignatureInformation &SI) {
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assert(!SI.label.empty() && "signature information label is required");
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json::obj Result{
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{"label", SI.label},
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{"parameters", json::ary(SI.parameters)},
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};
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if (!SI.documentation.empty())
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Result["documentation"] = SI.documentation;
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return std::move(Result);
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}
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json::Expr toJSON(const SignatureHelp &SH) {
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assert(SH.activeSignature >= 0 &&
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"Unexpected negative value for number of active signatures.");
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assert(SH.activeParameter >= 0 &&
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"Unexpected negative value for active parameter index");
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return json::obj{
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{"activeSignature", SH.activeSignature},
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{"activeParameter", SH.activeParameter},
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{"signatures", json::ary(SH.signatures)},
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};
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}
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bool fromJSON(const json::Expr &Params, RenameParams &R) {
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json::ObjectMapper O(Params);
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return O && O.map("textDocument", R.textDocument) &&
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O.map("position", R.position) && O.map("newName", R.newName);
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}
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} // namespace clangd
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} // namespace clang
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