flow/src/Project.zig

1268 lines
52 KiB
Zig

const std = @import("std");
const tp = @import("thespian");
const cbor = @import("cbor");
const log = @import("log");
const root = @import("root");
const dizzy = @import("dizzy");
const Buffer = @import("Buffer");
const fuzzig = @import("fuzzig");
const tracy = @import("tracy");
const builtin = @import("builtin");
const LSP = @import("LSP.zig");
allocator: std.mem.Allocator,
name: []const u8,
files: std.ArrayList(File),
pending: std.ArrayList(File),
longest_file_path: usize = 0,
open_time: i64,
language_servers: std.StringHashMap(LSP),
file_language_server: std.StringHashMap(LSP),
const Self = @This();
const OutOfMemoryError = error{OutOfMemory};
const CallError = tp.CallError;
const SpawnError = (OutOfMemoryError || error{ThespianSpawnFailed});
pub const InvalidMessageError = error{ InvalidMessage, InvalidMessageField, InvalidTargetURI };
pub const StartLspError = (error{ ThespianSpawnFailed, Timeout, InvalidArgument } || LspError || OutOfMemoryError || cbor.Error);
pub const LspError = (error{ NoLsp, LspFailed } || OutOfMemoryError);
pub const ClientError = (error{ClientFailed} || OutOfMemoryError);
pub const LspOrClientError = (LspError || ClientError);
const File = struct {
path: []const u8,
mtime: i128,
row: usize = 0,
col: usize = 0,
visited: bool = false,
};
pub fn init(allocator: std.mem.Allocator, name: []const u8) OutOfMemoryError!Self {
return .{
.allocator = allocator,
.name = try allocator.dupe(u8, name),
.files = std.ArrayList(File).init(allocator),
.pending = std.ArrayList(File).init(allocator),
.open_time = std.time.milliTimestamp(),
.language_servers = std.StringHashMap(LSP).init(allocator),
.file_language_server = std.StringHashMap(LSP).init(allocator),
};
}
pub fn deinit(self: *Self) void {
var i_ = self.file_language_server.iterator();
while (i_.next()) |p| {
self.allocator.free(p.key_ptr.*);
}
var i = self.language_servers.iterator();
while (i.next()) |p| {
self.allocator.free(p.key_ptr.*);
p.value_ptr.*.term();
}
for (self.files.items) |file| self.allocator.free(file.path);
self.files.deinit();
self.allocator.free(self.name);
}
pub fn write_state(self: *Self, writer: anytype) !void {
try cbor.writeValue(writer, self.name);
for (self.files.items) |file| {
if (!file.visited) continue;
try cbor.writeArrayHeader(writer, 4);
try cbor.writeValue(writer, file.path);
try cbor.writeValue(writer, file.mtime);
try cbor.writeValue(writer, file.row);
try cbor.writeValue(writer, file.col);
}
}
pub fn restore_state(self: *Self, data: []const u8) !void {
defer self.sort_files_by_mtime();
var name: []const u8 = undefined;
var path: []const u8 = undefined;
var mtime: i128 = undefined;
var row: usize = undefined;
var col: usize = undefined;
var iter: []const u8 = data;
_ = cbor.matchValue(&iter, tp.extract(&name)) catch {};
while (cbor.matchValue(&iter, .{
tp.extract(&path),
tp.extract(&mtime),
tp.extract(&row),
tp.extract(&col),
}) catch |e| switch (e) {
error.TooShort => return,
else => return e,
}) {
self.longest_file_path = @max(self.longest_file_path, path.len);
const stat = std.fs.cwd().statFile(path) catch return;
switch (stat.kind) {
.sym_link, .file => {},
else => return,
}
try self.update_mru_internal(path, mtime, row, col);
}
}
fn get_language_server_instance(self: *Self, language_server: []const u8) StartLspError!LSP {
if (self.language_servers.get(language_server)) |lsp| {
if (!lsp.pid.expired()) return lsp;
lsp.deinit();
_ = self.language_servers.remove(language_server);
}
const lsp = try LSP.open(self.allocator, self.name, .{ .buf = language_server });
errdefer lsp.deinit();
const uri = try self.make_URI(null);
defer self.allocator.free(uri);
const basename_begin = std.mem.lastIndexOfScalar(u8, self.name, std.fs.path.sep);
const basename = if (basename_begin) |begin| self.name[begin + 1 ..] else self.name;
const response = try self.send_lsp_init_request(lsp, self.name, basename, uri);
defer self.allocator.free(response.buf);
lsp.send_notification("initialized", .{}) catch return error.LspFailed;
if (lsp.pid.expired()) return error.LspFailed;
log.logger("lsp").print("initialized LSP: {s}", .{fmt_lsp_name_func(language_server)});
try self.language_servers.put(try self.allocator.dupe(u8, language_server), lsp);
return lsp;
}
fn get_or_start_language_server(self: *Self, file_path: []const u8, language_server: []const u8) StartLspError!LSP {
const lsp = self.file_language_server.get(file_path) orelse blk: {
const new_lsp = try self.get_language_server_instance(language_server);
const key = try self.allocator.dupe(u8, file_path);
try self.file_language_server.put(key, new_lsp);
break :blk new_lsp;
};
return lsp;
}
fn get_language_server(self: *Self, file_path: []const u8) LspError!LSP {
const lsp = self.file_language_server.get(file_path) orelse return error.NoLsp;
if (lsp.pid.expired()) {
if (self.file_language_server.fetchRemove(file_path)) |kv|
self.allocator.free(kv.key);
return error.LspFailed;
}
return lsp;
}
fn make_URI(self: *Self, file_path: ?[]const u8) LspError![]const u8 {
var buf = std.ArrayList(u8).init(self.allocator);
if (file_path) |path| {
if (std.fs.path.isAbsolute(path)) {
try buf.writer().print("file://{s}", .{path});
} else {
try buf.writer().print("file://{s}{c}{s}", .{ self.name, std.fs.path.sep, path });
}
} else try buf.writer().print("file://{s}", .{self.name});
return buf.toOwnedSlice();
}
pub fn sort_files_by_mtime(self: *Self) void {
const less_fn = struct {
fn less_fn(_: void, lhs: File, rhs: File) bool {
return lhs.mtime > rhs.mtime;
}
}.less_fn;
std.mem.sort(File, self.files.items, {}, less_fn);
}
pub fn request_n_most_recent_file(self: *Self, from: tp.pid_ref, n: usize) ClientError!void {
if (n >= self.files.items.len) return error.ClientFailed;
const file_path = if (self.files.items.len > 0) self.files.items[n].path else null;
from.send(.{file_path}) catch return error.ClientFailed;
}
pub fn request_recent_files(self: *Self, from: tp.pid_ref, max: usize) ClientError!void {
defer from.send(.{ "PRJ", "recent_done", self.longest_file_path, "" }) catch {};
for (self.files.items, 0..) |file, i| {
from.send(.{ "PRJ", "recent", self.longest_file_path, file.path }) catch return error.ClientFailed;
if (i >= max) return;
}
}
fn simple_query_recent_files(self: *Self, from: tp.pid_ref, max: usize, query: []const u8) ClientError!usize {
var i: usize = 0;
defer from.send(.{ "PRJ", "recent_done", self.longest_file_path, query }) catch {};
for (self.files.items) |file| {
if (file.path.len < query.len) continue;
if (std.mem.indexOf(u8, file.path, query)) |idx| {
var matches = try self.allocator.alloc(usize, query.len);
defer self.allocator.free(matches);
var n: usize = 0;
while (n < query.len) : (n += 1) matches[n] = idx + n;
from.send(.{ "PRJ", "recent", self.longest_file_path, file.path, matches }) catch return error.ClientFailed;
i += 1;
if (i >= max) return i;
}
}
return i;
}
pub fn query_recent_files(self: *Self, from: tp.pid_ref, max: usize, query: []const u8) ClientError!usize {
if (query.len < 3)
return self.simple_query_recent_files(from, max, query);
defer from.send(.{ "PRJ", "recent_done", self.longest_file_path, query }) catch {};
var searcher = try fuzzig.Ascii.init(
self.allocator,
4096, // haystack max size
4096, // needle max size
.{ .case_sensitive = false },
);
defer searcher.deinit();
const Match = struct {
path: []const u8,
score: i32,
matches: []const usize,
};
var matches = std.ArrayList(Match).init(self.allocator);
for (self.files.items) |file| {
const match = searcher.scoreMatches(file.path, query);
if (match.score) |score| {
(try matches.addOne()).* = .{
.path = file.path,
.score = score,
.matches = try self.allocator.dupe(usize, match.matches),
};
}
}
if (matches.items.len == 0) return 0;
const less_fn = struct {
fn less_fn(_: void, lhs: Match, rhs: Match) bool {
return lhs.score > rhs.score;
}
}.less_fn;
std.mem.sort(Match, matches.items, {}, less_fn);
for (matches.items[0..@min(max, matches.items.len)]) |match|
from.send(.{ "PRJ", "recent", self.longest_file_path, match.path, match.matches }) catch return error.ClientFailed;
return @min(max, matches.items.len);
}
pub fn add_pending_file(self: *Self, file_path: []const u8, mtime: i128) OutOfMemoryError!void {
self.longest_file_path = @max(self.longest_file_path, file_path.len);
(try self.pending.addOne()).* = .{ .path = try self.allocator.dupe(u8, file_path), .mtime = mtime };
}
pub fn merge_pending_files(self: *Self) OutOfMemoryError!void {
defer self.sort_files_by_mtime();
const existing = try self.files.toOwnedSlice();
self.files = self.pending;
self.pending = std.ArrayList(File).init(self.allocator);
for (existing) |*file| {
self.update_mru_internal(file.path, file.mtime, file.row, file.col) catch {};
self.allocator.free(file.path);
}
self.allocator.free(existing);
}
pub fn update_mru(self: *Self, file_path: []const u8, row: usize, col: usize) OutOfMemoryError!void {
defer self.sort_files_by_mtime();
try self.update_mru_internal(file_path, std.time.nanoTimestamp(), row, col);
}
fn update_mru_internal(self: *Self, file_path: []const u8, mtime: i128, row: usize, col: usize) OutOfMemoryError!void {
for (self.files.items) |*file| {
if (!std.mem.eql(u8, file.path, file_path)) continue;
file.mtime = mtime;
if (row != 0) {
file.row = row;
file.col = col;
file.visited = true;
}
return;
}
if (row != 0) {
(try self.files.addOne()).* = .{
.path = try self.allocator.dupe(u8, file_path),
.mtime = mtime,
.row = row,
.col = col,
.visited = true,
};
} else {
(try self.files.addOne()).* = .{
.path = try self.allocator.dupe(u8, file_path),
.mtime = mtime,
};
}
}
pub fn get_mru_position(self: *Self, from: tp.pid_ref, file_path: []const u8) ClientError!void {
for (self.files.items) |*file| {
if (!std.mem.eql(u8, file.path, file_path)) continue;
if (file.row != 0)
from.send(.{ "cmd", "goto_line_and_column", .{ file.row + 1, file.col + 1 } }) catch return error.ClientFailed;
return;
}
}
pub fn did_open(self: *Self, file_path: []const u8, file_type: []const u8, language_server: []const u8, version: usize, text: []const u8) StartLspError!void {
self.update_mru(file_path, 0, 0) catch {};
const lsp = try self.get_or_start_language_server(file_path, language_server);
const uri = try self.make_URI(file_path);
defer self.allocator.free(uri);
lsp.send_notification("textDocument/didOpen", .{
.textDocument = .{ .uri = uri, .languageId = file_type, .version = version, .text = text },
}) catch return error.LspFailed;
}
pub fn did_change(self: *Self, file_path: []const u8, version: usize, root_dst_addr: usize, root_src_addr: usize, eol_mode: Buffer.EolMode) LspError!void {
const lsp = try self.get_language_server(file_path);
const uri = try self.make_URI(file_path);
var arena_ = std.heap.ArenaAllocator.init(self.allocator);
const arena = arena_.allocator();
var scratch_alloc: ?[]u32 = null;
defer {
const frame = tracy.initZone(@src(), .{ .name = "deinit" });
self.allocator.free(uri);
arena_.deinit();
frame.deinit();
if (scratch_alloc) |scratch|
self.allocator.free(scratch);
}
const root_dst: Buffer.Root = if (root_dst_addr == 0) return else @ptrFromInt(root_dst_addr);
const root_src: Buffer.Root = if (root_src_addr == 0) return else @ptrFromInt(root_src_addr);
var dizzy_edits = std.ArrayListUnmanaged(dizzy.Edit){};
var dst = std.ArrayList(u8).init(arena);
var src = std.ArrayList(u8).init(arena);
var edits_cb = std.ArrayList(u8).init(arena);
const writer = edits_cb.writer();
{
const frame = tracy.initZone(@src(), .{ .name = "store" });
defer frame.deinit();
try root_dst.store(dst.writer(), eol_mode);
try root_src.store(src.writer(), eol_mode);
}
const scratch_len = 4 * (dst.items.len + src.items.len) + 2;
const scratch = blk: {
const frame = tracy.initZone(@src(), .{ .name = "scratch" });
defer frame.deinit();
break :blk try self.allocator.alloc(u32, scratch_len);
};
scratch_alloc = scratch;
{
const frame = tracy.initZone(@src(), .{ .name = "diff" });
defer frame.deinit();
try dizzy.PrimitiveSliceDiffer(u8).diff(arena, &dizzy_edits, src.items, dst.items, scratch);
}
var lines_dst: usize = 0;
var last_offset: usize = 0;
var edits_count: usize = 0;
{
const frame = tracy.initZone(@src(), .{ .name = "transform" });
defer frame.deinit();
for (dizzy_edits.items) |dizzy_edit| {
switch (dizzy_edit.kind) {
.equal => {
scan_char(src.items[dizzy_edit.range.start..dizzy_edit.range.end], &lines_dst, '\n', &last_offset);
},
.insert => {
const line_start_dst: usize = lines_dst;
try cbor.writeValue(writer, .{
.range = .{
.start = .{ .line = line_start_dst, .character = last_offset },
.end = .{ .line = line_start_dst, .character = last_offset },
},
.text = dst.items[dizzy_edit.range.start..dizzy_edit.range.end],
});
edits_count += 1;
scan_char(dst.items[dizzy_edit.range.start..dizzy_edit.range.end], &lines_dst, '\n', &last_offset);
},
.delete => {
var line_end_dst: usize = lines_dst;
var offset_end_dst: usize = last_offset;
scan_char(src.items[dizzy_edit.range.start..dizzy_edit.range.end], &line_end_dst, '\n', &offset_end_dst);
try cbor.writeValue(writer, .{
.range = .{
.start = .{ .line = lines_dst, .character = last_offset },
.end = .{ .line = line_end_dst, .character = offset_end_dst },
},
.text = "",
});
edits_count += 1;
},
}
}
}
{
const frame = tracy.initZone(@src(), .{ .name = "send" });
defer frame.deinit();
var msg = std.ArrayList(u8).init(arena);
const msg_writer = msg.writer();
try cbor.writeMapHeader(msg_writer, 2);
try cbor.writeValue(msg_writer, "textDocument");
try cbor.writeValue(msg_writer, .{ .uri = uri, .version = version });
try cbor.writeValue(msg_writer, "contentChanges");
try cbor.writeArrayHeader(msg_writer, edits_count);
_ = try msg_writer.write(edits_cb.items);
lsp.send_notification_raw("textDocument/didChange", msg.items) catch return error.LspFailed;
}
}
fn scan_char(chars: []const u8, lines: *usize, char: u8, last_offset: ?*usize) void {
var pos = chars;
if (last_offset) |off| off.* += pos.len;
while (pos.len > 0) {
if (pos[0] == char) {
if (last_offset) |off| off.* = pos.len - 1;
lines.* += 1;
}
pos = pos[1..];
}
}
pub fn did_save(self: *Self, file_path: []const u8) LspError!void {
const lsp = try self.get_language_server(file_path);
const uri = try self.make_URI(file_path);
defer self.allocator.free(uri);
lsp.send_notification("textDocument/didSave", .{
.textDocument = .{ .uri = uri },
}) catch return error.LspFailed;
}
pub fn did_close(self: *Self, file_path: []const u8) LspError!void {
const lsp = try self.get_language_server(file_path);
const uri = try self.make_URI(file_path);
defer self.allocator.free(uri);
lsp.send_notification("textDocument/didClose", .{
.textDocument = .{ .uri = uri },
}) catch return error.LspFailed;
}
pub fn goto_definition(self: *Self, from: tp.pid_ref, file_path: []const u8, row: usize, col: usize) SendGotoRequestError!void {
return self.send_goto_request(from, file_path, row, col, "textDocument/definition");
}
pub fn goto_declaration(self: *Self, from: tp.pid_ref, file_path: []const u8, row: usize, col: usize) SendGotoRequestError!void {
return self.send_goto_request(from, file_path, row, col, "textDocument/declaration");
}
pub fn goto_implementation(self: *Self, from: tp.pid_ref, file_path: []const u8, row: usize, col: usize) SendGotoRequestError!void {
return self.send_goto_request(from, file_path, row, col, "textDocument/implementation");
}
pub fn goto_type_definition(self: *Self, from: tp.pid_ref, file_path: []const u8, row: usize, col: usize) SendGotoRequestError!void {
return self.send_goto_request(from, file_path, row, col, "textDocument/typeDefinition");
}
pub const SendGotoRequestError = (LspError || ClientError || InvalidMessageError || GetLineOfFileError || cbor.Error);
fn send_goto_request(self: *Self, from: tp.pid_ref, file_path: []const u8, row: usize, col: usize, method: []const u8) SendGotoRequestError!void {
const lsp = try self.get_language_server(file_path);
const uri = try self.make_URI(file_path);
defer self.allocator.free(uri);
const response = lsp.send_request(self.allocator, method, .{
.textDocument = .{ .uri = uri },
.position = .{ .line = row, .character = col },
}) catch return error.LspFailed;
defer self.allocator.free(response.buf);
var link: []const u8 = undefined;
var locations: []const u8 = undefined;
if (try cbor.match(response.buf, .{ "child", tp.string, "result", tp.array })) {
if (try cbor.match(response.buf, .{ tp.any, tp.any, tp.any, .{tp.extract_cbor(&link)} })) {
try self.navigate_to_location_link(from, link);
} else if (try cbor.match(response.buf, .{ tp.any, tp.any, tp.any, tp.extract_cbor(&locations) })) {
try self.send_reference_list(from, locations);
}
} else if (try cbor.match(response.buf, .{ "child", tp.string, "result", tp.null_ })) {
return;
} else if (try cbor.match(response.buf, .{ "child", tp.string, "result", tp.extract_cbor(&link) })) {
try self.navigate_to_location_link(from, link);
}
}
fn navigate_to_location_link(_: *Self, from: tp.pid_ref, location_link: []const u8) (ClientError || InvalidMessageError || cbor.Error)!void {
var iter = location_link;
var targetUri: ?[]const u8 = null;
var targetRange: ?Range = null;
var targetSelectionRange: ?Range = null;
var len = try cbor.decodeMapHeader(&iter);
while (len > 0) : (len -= 1) {
var field_name: []const u8 = undefined;
if (!(try cbor.matchString(&iter, &field_name))) return error.InvalidMessage;
if (std.mem.eql(u8, field_name, "targetUri") or std.mem.eql(u8, field_name, "uri")) {
var value: []const u8 = undefined;
if (!(try cbor.matchValue(&iter, cbor.extract(&value)))) return error.InvalidMessageField;
targetUri = value;
} else if (std.mem.eql(u8, field_name, "targetRange") or std.mem.eql(u8, field_name, "range")) {
var range: []const u8 = undefined;
if (!(try cbor.matchValue(&iter, cbor.extract_cbor(&range)))) return error.InvalidMessageField;
targetRange = try read_range(range);
} else if (std.mem.eql(u8, field_name, "targetSelectionRange")) {
var range: []const u8 = undefined;
if (!(try cbor.matchValue(&iter, cbor.extract_cbor(&range)))) return error.InvalidMessageField;
targetSelectionRange = try read_range(range);
} else {
try cbor.skipValue(&iter);
}
}
if (targetUri == null or targetRange == null) return error.InvalidMessageField;
if (!std.mem.eql(u8, targetUri.?[0..7], "file://")) return error.InvalidTargetURI;
var file_path_buf: [std.fs.max_path_bytes]u8 = undefined;
var file_path = std.Uri.percentDecodeBackwards(&file_path_buf, targetUri.?[7..]);
if (builtin.os.tag == .windows) {
if (file_path[0] == '/') file_path = file_path[1..];
for (file_path, 0..) |c, i| if (c == '/') {
file_path[i] = '\\';
};
}
if (targetSelectionRange) |sel| {
from.send(.{ "cmd", "navigate", .{
.file = file_path,
.goto = .{
targetRange.?.start.line + 1,
targetRange.?.start.character + 1,
sel.start.line,
sel.start.character,
sel.end.line,
sel.end.character,
},
} }) catch return error.ClientFailed;
} else {
from.send(.{ "cmd", "navigate", .{
.file = file_path,
.goto = .{
targetRange.?.start.line + 1,
targetRange.?.start.character + 1,
},
} }) catch return error.ClientFailed;
}
}
pub fn references(self: *Self, from: tp.pid_ref, file_path: []const u8, row: usize, col: usize) SendGotoRequestError!void {
const lsp = try self.get_language_server(file_path);
const uri = try self.make_URI(file_path);
defer self.allocator.free(uri);
log.logger("lsp").print("finding references...", .{});
const response = lsp.send_request(self.allocator, "textDocument/references", .{
.textDocument = .{ .uri = uri },
.position = .{ .line = row, .character = col },
.context = .{ .includeDeclaration = true },
}) catch return error.LspFailed;
defer self.allocator.free(response.buf);
var locations: []const u8 = undefined;
if (try cbor.match(response.buf, .{ "child", tp.string, "result", tp.null_ })) {
return;
} else if (try cbor.match(response.buf, .{ "child", tp.string, "result", tp.extract_cbor(&locations) })) {
try self.send_reference_list(from, locations);
}
}
fn send_reference_list(self: *Self, to: tp.pid_ref, locations: []const u8) (ClientError || InvalidMessageError || GetLineOfFileError || cbor.Error)!void {
defer to.send(.{ "REF", "done" }) catch {};
var iter = locations;
var len = try cbor.decodeArrayHeader(&iter);
const count = len;
while (len > 0) : (len -= 1) {
var location: []const u8 = undefined;
if (try cbor.matchValue(&iter, cbor.extract_cbor(&location))) {
try self.send_reference(to, location);
} else return error.InvalidMessageField;
}
log.logger("lsp").print("found {d} references", .{count});
}
fn send_reference(self: *Self, to: tp.pid_ref, location: []const u8) (ClientError || InvalidMessageError || GetLineOfFileError || cbor.Error)!void {
var iter = location;
var targetUri: ?[]const u8 = null;
var targetRange: ?Range = null;
var targetSelectionRange: ?Range = null;
var len = try cbor.decodeMapHeader(&iter);
while (len > 0) : (len -= 1) {
var field_name: []const u8 = undefined;
if (!(try cbor.matchString(&iter, &field_name))) return error.InvalidMessage;
if (std.mem.eql(u8, field_name, "targetUri") or std.mem.eql(u8, field_name, "uri")) {
var value: []const u8 = undefined;
if (!(try cbor.matchValue(&iter, cbor.extract(&value)))) return error.InvalidMessageField;
targetUri = value;
} else if (std.mem.eql(u8, field_name, "targetRange") or std.mem.eql(u8, field_name, "range")) {
var range: []const u8 = undefined;
if (!(try cbor.matchValue(&iter, cbor.extract_cbor(&range)))) return error.InvalidMessageField;
targetRange = try read_range(range);
} else if (std.mem.eql(u8, field_name, "targetSelectionRange")) {
var range: []const u8 = undefined;
if (!(try cbor.matchValue(&iter, cbor.extract_cbor(&range)))) return error.InvalidMessageField;
targetSelectionRange = try read_range(range);
} else {
try cbor.skipValue(&iter);
}
}
if (targetUri == null or targetRange == null) return error.InvalidMessageField;
if (!std.mem.eql(u8, targetUri.?[0..7], "file://")) return error.InvalidTargetURI;
var file_path_buf: [std.fs.max_path_bytes]u8 = undefined;
var file_path = std.Uri.percentDecodeBackwards(&file_path_buf, targetUri.?[7..]);
if (builtin.os.tag == .windows) {
if (file_path[0] == '/') file_path = file_path[1..];
for (file_path, 0..) |c, i| if (c == '/') {
file_path[i] = '\\';
};
}
const line = try self.get_line_of_file(self.allocator, file_path, targetRange.?.start.line);
defer self.allocator.free(line);
const file_path_ = if (file_path.len > self.name.len and std.mem.eql(u8, self.name, file_path[0..self.name.len]))
file_path[self.name.len + 1 ..]
else
file_path;
to.send(.{
"REF",
file_path_,
targetRange.?.start.line + 1,
targetRange.?.start.character,
targetRange.?.end.line + 1,
targetRange.?.end.character,
line,
}) catch return error.ClientFailed;
}
pub fn completion(self: *Self, _: tp.pid_ref, file_path: []const u8, row: usize, col: usize) LspOrClientError!void {
const lsp = try self.get_language_server(file_path);
const uri = try self.make_URI(file_path);
defer self.allocator.free(uri);
const response = lsp.send_request(self.allocator, "textDocument/completion", .{
.textDocument = .{ .uri = uri },
.position = .{ .line = row, .character = col },
}) catch return error.LspFailed;
defer self.allocator.free(response.buf);
}
pub fn hover(self: *Self, from: tp.pid_ref, file_path: []const u8, row: usize, col: usize) (LspOrClientError || InvalidMessageError || cbor.Error)!void {
const lsp = try self.get_language_server(file_path);
const uri = try self.make_URI(file_path);
defer self.allocator.free(uri);
// log.logger("lsp").print("fetching hover information...", .{});
const response = lsp.send_request(self.allocator, "textDocument/hover", .{
.textDocument = .{ .uri = uri },
.position = .{ .line = row, .character = col },
}) catch return error.LspFailed;
defer self.allocator.free(response.buf);
var result: []const u8 = undefined;
if (try cbor.match(response.buf, .{ "child", tp.string, "result", tp.null_ })) {
try send_content_msg_empty(from, "hover", file_path, row, col);
} else if (try cbor.match(response.buf, .{ "child", tp.string, "result", tp.extract_cbor(&result) })) {
try self.send_hover(from, file_path, row, col, result);
}
}
fn send_hover(self: *Self, to: tp.pid_ref, file_path: []const u8, row: usize, col: usize, result: []const u8) (ClientError || InvalidMessageError || cbor.Error)!void {
var iter = result;
var len = cbor.decodeMapHeader(&iter) catch return;
var contents: []const u8 = "";
var range: ?Range = null;
while (len > 0) : (len -= 1) {
var field_name: []const u8 = undefined;
if (!(try cbor.matchString(&iter, &field_name))) return error.InvalidMessage;
if (std.mem.eql(u8, field_name, "contents")) {
if (!(try cbor.matchValue(&iter, cbor.extract_cbor(&contents)))) return error.InvalidMessageField;
} else if (std.mem.eql(u8, field_name, "range")) {
var range_: []const u8 = undefined;
if (!(try cbor.matchValue(&iter, cbor.extract_cbor(&range_)))) return error.InvalidMessageField;
range = try read_range(range_);
} else {
try cbor.skipValue(&iter);
}
}
if (contents.len > 0)
return self.send_contents(to, "hover", file_path, row, col, contents, range);
}
fn send_contents(
self: *Self,
to: tp.pid_ref,
tag: []const u8,
file_path: []const u8,
row: usize,
col: usize,
result: []const u8,
range: ?Range,
) !void {
var iter = result;
var kind: []const u8 = "plaintext";
var value: []const u8 = "";
if (try cbor.matchValue(&iter, cbor.extract(&value)))
return send_content_msg(to, tag, file_path, row, col, kind, value, range);
var is_list = true;
var len = cbor.decodeArrayHeader(&iter) catch blk: {
is_list = false;
iter = result;
break :blk cbor.decodeMapHeader(&iter) catch return;
};
if (is_list) {
var content = std.ArrayList(u8).init(self.allocator);
defer content.deinit();
while (len > 0) : (len -= 1) {
if (try cbor.matchValue(&iter, cbor.extract(&value))) {
try content.appendSlice(value);
if (len > 1) try content.appendSlice("\n");
}
}
return send_content_msg(to, tag, file_path, row, col, kind, content.items, range);
}
while (len > 0) : (len -= 1) {
var field_name: []const u8 = undefined;
if (!(try cbor.matchString(&iter, &field_name))) return error.InvalidMessage;
if (std.mem.eql(u8, field_name, "kind")) {
if (!(try cbor.matchValue(&iter, cbor.extract(&kind)))) return error.InvalidMessageField;
} else if (std.mem.eql(u8, field_name, "value")) {
if (!(try cbor.matchValue(&iter, cbor.extract(&value)))) return error.InvalidMessageField;
} else {
try cbor.skipValue(&iter);
}
}
return send_content_msg(to, tag, file_path, row, col, kind, value, range);
}
fn send_content_msg(
to: tp.pid_ref,
tag: []const u8,
file_path: []const u8,
row: usize,
col: usize,
kind: []const u8,
content: []const u8,
range: ?Range,
) ClientError!void {
const r = range orelse Range{
.start = .{ .line = row, .character = col },
.end = .{ .line = row, .character = col },
};
to.send(.{ tag, file_path, kind, content, r.start.line, r.start.character, r.end.line, r.end.character }) catch return error.ClientFailed;
}
fn send_content_msg_empty(to: tp.pid_ref, tag: []const u8, file_path: []const u8, row: usize, col: usize) ClientError!void {
return send_content_msg(to, tag, file_path, row, col, "plaintext", "", null);
}
pub fn publish_diagnostics(self: *Self, to: tp.pid_ref, params_cb: []const u8) (ClientError || InvalidMessageError || cbor.Error)!void {
var uri: ?[]const u8 = null;
var diagnostics: []const u8 = &.{};
var iter = params_cb;
var len = try cbor.decodeMapHeader(&iter);
while (len > 0) : (len -= 1) {
var field_name: []const u8 = undefined;
if (!(try cbor.matchString(&iter, &field_name))) return error.InvalidMessage;
if (std.mem.eql(u8, field_name, "uri")) {
if (!(try cbor.matchValue(&iter, cbor.extract(&uri)))) return error.InvalidMessageField;
} else if (std.mem.eql(u8, field_name, "diagnostics")) {
if (!(try cbor.matchValue(&iter, cbor.extract_cbor(&diagnostics)))) return error.InvalidMessageField;
} else {
try cbor.skipValue(&iter);
}
}
if (uri == null) return error.InvalidMessageField;
if (!std.mem.eql(u8, uri.?[0..7], "file://")) return error.InvalidTargetURI;
var file_path_buf: [std.fs.max_path_bytes]u8 = undefined;
const file_path = std.Uri.percentDecodeBackwards(&file_path_buf, uri.?[7..]);
try self.send_clear_diagnostics(to, file_path);
iter = diagnostics;
len = try cbor.decodeArrayHeader(&iter);
while (len > 0) : (len -= 1) {
var diagnostic: []const u8 = undefined;
if (try cbor.matchValue(&iter, cbor.extract_cbor(&diagnostic))) {
try self.send_diagnostic(to, file_path, diagnostic);
} else return error.InvalidMessageField;
}
}
fn send_diagnostic(_: *Self, to: tp.pid_ref, file_path: []const u8, diagnostic: []const u8) (ClientError || InvalidMessageError || cbor.Error)!void {
var source: []const u8 = "unknown";
var code: []const u8 = "none";
var message: []const u8 = "empty";
var severity: i64 = 1;
var range: ?Range = null;
var iter = diagnostic;
var len = try cbor.decodeMapHeader(&iter);
while (len > 0) : (len -= 1) {
var field_name: []const u8 = undefined;
if (!(try cbor.matchString(&iter, &field_name))) return error.InvalidMessage;
if (std.mem.eql(u8, field_name, "source") or std.mem.eql(u8, field_name, "uri")) {
if (!(try cbor.matchValue(&iter, cbor.extract(&source)))) return error.InvalidMessageField;
} else if (std.mem.eql(u8, field_name, "code")) {
if (!(try cbor.matchValue(&iter, cbor.extract(&code)))) return error.InvalidMessageField;
} else if (std.mem.eql(u8, field_name, "message")) {
if (!(try cbor.matchValue(&iter, cbor.extract(&message)))) return error.InvalidMessageField;
} else if (std.mem.eql(u8, field_name, "severity")) {
if (!(try cbor.matchValue(&iter, cbor.extract(&severity)))) return error.InvalidMessageField;
} else if (std.mem.eql(u8, field_name, "range")) {
var range_: []const u8 = undefined;
if (!(try cbor.matchValue(&iter, cbor.extract_cbor(&range_)))) return error.InvalidMessageField;
range = try read_range(range_);
} else {
try cbor.skipValue(&iter);
}
}
if (range == null) return error.InvalidMessageField;
to.send(.{ "cmd", "add_diagnostic", .{
file_path,
source,
code,
message,
severity,
range.?.start.line,
range.?.start.character,
range.?.end.line,
range.?.end.character,
} }) catch return error.ClientFailed;
}
fn send_clear_diagnostics(_: *Self, to: tp.pid_ref, file_path: []const u8) ClientError!void {
to.send(.{ "cmd", "clear_diagnostics", .{file_path} }) catch return error.ClientFailed;
}
const Range = struct { start: Position, end: Position };
fn read_range(range: []const u8) !Range {
var iter = range;
var start: ?Position = null;
var end: ?Position = null;
var len = try cbor.decodeMapHeader(&iter);
while (len > 0) : (len -= 1) {
var field_name: []const u8 = undefined;
if (!(try cbor.matchString(&iter, &field_name))) return error.InvalidMessage;
if (std.mem.eql(u8, field_name, "start")) {
var position: []const u8 = undefined;
if (!(try cbor.matchValue(&iter, cbor.extract_cbor(&position)))) return error.InvalidMessageField;
start = try read_position(position);
} else if (std.mem.eql(u8, field_name, "end")) {
var position: []const u8 = undefined;
if (!(try cbor.matchValue(&iter, cbor.extract_cbor(&position)))) return error.InvalidMessageField;
end = try read_position(position);
} else {
try cbor.skipValue(&iter);
}
}
if (start == null or end == null) return error.InvalidMessageField;
return .{ .start = start.?, .end = end.? };
}
const Position = struct { line: usize, character: usize };
fn read_position(position: []const u8) !Position {
var iter = position;
var line: ?usize = 0;
var character: ?usize = 0;
var len = try cbor.decodeMapHeader(&iter);
while (len > 0) : (len -= 1) {
var field_name: []const u8 = undefined;
if (!(try cbor.matchString(&iter, &field_name))) return error.InvalidMessage;
if (std.mem.eql(u8, field_name, "line")) {
if (!(try cbor.matchValue(&iter, cbor.extract(&line)))) return error.InvalidMessageField;
} else if (std.mem.eql(u8, field_name, "character")) {
if (!(try cbor.matchValue(&iter, cbor.extract(&character)))) return error.InvalidMessageField;
} else {
try cbor.skipValue(&iter);
}
}
if (line == null or character == null) return error.InvalidMessageField;
return .{ .line = line.?, .character = character.? };
}
pub fn show_message(_: *Self, _: tp.pid_ref, params_cb: []const u8) !void {
var type_: i32 = 0;
var message: ?[]const u8 = null;
var iter = params_cb;
var len = try cbor.decodeMapHeader(&iter);
while (len > 0) : (len -= 1) {
var field_name: []const u8 = undefined;
if (!(try cbor.matchString(&iter, &field_name))) return error.InvalidMessage;
if (std.mem.eql(u8, field_name, "type")) {
if (!(try cbor.matchValue(&iter, cbor.extract(&type_)))) return error.InvalidMessageField;
} else if (std.mem.eql(u8, field_name, "message")) {
if (!(try cbor.matchValue(&iter, cbor.extract(&message)))) return error.InvalidMessageField;
} else {
try cbor.skipValue(&iter);
}
}
const msg = message orelse return;
const logger = log.logger("lsp");
defer logger.deinit();
if (type_ <= 2)
logger.err_msg("lsp", msg)
else
logger.print("{s}", .{msg});
}
pub fn register_capability(self: *Self, from: tp.pid_ref, id: i32, params_cb: []const u8) ClientError!void {
_ = params_cb;
return self.send_lsp_response(from, id, null);
}
pub fn send_lsp_response(self: *Self, from: tp.pid_ref, id: i32, result: anytype) ClientError!void {
var cb = std.ArrayList(u8).init(self.allocator);
defer cb.deinit();
try cbor.writeValue(cb.writer(), result);
from.send(.{ "RSP", id, cb.items }) catch return error.ClientFailed;
}
fn send_lsp_init_request(self: *Self, lsp: LSP, project_path: []const u8, project_basename: []const u8, project_uri: []const u8) CallError!tp.message {
return lsp.send_request(self.allocator, "initialize", .{
.processId = if (builtin.os.tag == .linux) std.os.linux.getpid() else null,
.rootPath = project_path,
.rootUri = project_uri,
.workspaceFolders = .{
.{
.uri = project_uri,
.name = project_basename,
},
},
.trace = "verbose",
.locale = "en-us",
.clientInfo = .{
.name = root.application_name,
.version = "0.0.1",
},
.capabilities = .{
.workspace = .{
.applyEdit = true,
.workspaceEdit = .{
.documentChanges = true,
.resourceOperations = .{
"create",
"rename",
"delete",
},
.failureHandling = "textOnlyTransactional",
.normalizesLineEndings = true,
.changeAnnotationSupport = .{ .groupsOnLabel = true },
},
// .configuration = true,
.didChangeWatchedFiles = .{
.dynamicRegistration = true,
.relativePatternSupport = true,
},
.symbol = .{
.dynamicRegistration = true,
.symbolKind = .{
.valueSet = .{ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26 },
},
.tagSupport = .{ .valueSet = .{1} },
.resolveSupport = .{ .properties = .{"location.range"} },
},
.codeLens = .{ .refreshSupport = false },
.executeCommand = .{ .dynamicRegistration = true },
// .didChangeConfiguration = .{ .dynamicRegistration = true },
.workspaceFolders = true,
.semanticTokens = .{ .refreshSupport = false },
.fileOperations = .{
.dynamicRegistration = true,
.didCreate = true,
.didRename = true,
.didDelete = true,
.willCreate = true,
.willRename = true,
.willDelete = true,
},
.inlineValue = .{ .refreshSupport = false },
.inlayHint = .{ .refreshSupport = false },
.diagnostics = .{ .refreshSupport = true },
},
.textDocument = .{
.publishDiagnostics = .{
.relatedInformation = true,
.versionSupport = false,
.tagSupport = .{ .valueSet = .{ 1, 2 } },
.codeDescriptionSupport = true,
.dataSupport = true,
},
.synchronization = .{
.dynamicRegistration = true,
.willSave = true,
.willSaveWaitUntil = true,
.didSave = true,
},
.completion = .{
.dynamicRegistration = true,
.contextSupport = true,
.completionItem = .{
.snippetSupport = true,
.commitCharactersSupport = true,
.documentationFormat = .{
"markdown",
"plaintext",
},
.deprecatedSupport = true,
.preselectSupport = true,
.tagSupport = .{ .valueSet = .{1} },
.insertReplaceSupport = true,
.resolveSupport = .{ .properties = .{
"documentation",
"detail",
"additionalTextEdits",
} },
.insertTextModeSupport = .{ .valueSet = .{ 1, 2 } },
.labelDetailsSupport = true,
},
.insertTextMode = 2,
.completionItemKind = .{
.valueSet = .{ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25 },
},
.completionList = .{ .itemDefaults = .{
"commitCharacters",
"editRange",
"insertTextFormat",
"insertTextMode",
} },
},
.hover = .{
.dynamicRegistration = true,
.contentFormat = .{ "markdown", "plaintext" },
},
.signatureHelp = .{
.dynamicRegistration = true,
.signatureInformation = .{
.documentationFormat = .{ "markdown", "plaintext" },
.parameterInformation = .{ .labelOffsetSupport = true },
.activeParameterSupport = true,
},
.contextSupport = true,
},
.definition = .{
.dynamicRegistration = true,
.linkSupport = true,
},
.references = .{ .dynamicRegistration = true },
.documentHighlight = .{ .dynamicRegistration = true },
.documentSymbol = .{
.dynamicRegistration = true,
.symbolKind = .{
.valueSet = .{ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26 },
},
.hierarchicalDocumentSymbolSupport = true,
.tagSupport = .{ .valueSet = .{1} },
.labelSupport = true,
},
.codeAction = .{
.dynamicRegistration = true,
.isPreferredSupport = true,
.disabledSupport = true,
.dataSupport = true,
.resolveSupport = .{ .properties = .{"edit"} },
.codeActionLiteralSupport = .{
.codeActionKind = .{
.valueSet = .{
"",
"quickfix",
"refactor",
"refactor.extract",
"refactor.inline",
"refactor.rewrite",
"source",
"source.organizeImports",
},
},
},
.honorsChangeAnnotations = false,
},
.codeLens = .{ .dynamicRegistration = true },
.formatting = .{ .dynamicRegistration = true },
.rangeFormatting = .{ .dynamicRegistration = true },
.onTypeFormatting = .{ .dynamicRegistration = true },
.rename = .{
.dynamicRegistration = true,
.prepareSupport = true,
.prepareSupportDefaultBehavior = 1,
.honorsChangeAnnotations = true,
},
.documentLink = .{
.dynamicRegistration = true,
.tooltipSupport = true,
},
.typeDefinition = .{
.dynamicRegistration = true,
.linkSupport = true,
},
.implementation = .{
.dynamicRegistration = true,
.linkSupport = true,
},
.colorProvider = .{ .dynamicRegistration = true },
.foldingRange = .{
.dynamicRegistration = true,
.rangeLimit = 5000,
.lineFoldingOnly = true,
.foldingRangeKind = .{ .valueSet = .{ "comment", "imports", "region" } },
.foldingRange = .{ .collapsedText = false },
},
.declaration = .{
.dynamicRegistration = true,
.linkSupport = true,
},
.selectionRange = .{ .dynamicRegistration = true },
.callHierarchy = .{ .dynamicRegistration = true },
.semanticTokens = .{
.dynamicRegistration = true,
.tokenTypes = .{
"namespace",
"type",
"class",
"enum",
"interface",
"struct",
"typeParameter",
"parameter",
"variable",
"property",
"enumMember",
"event",
"function",
"method",
"macro",
"keyword",
"modifier",
"comment",
"string",
"number",
"regexp",
"operator",
"decorator",
},
.tokenModifiers = .{
"declaration",
"definition",
"readonly",
"static",
"deprecated",
"abstract",
"async",
"modification",
"documentation",
"defaultLibrary",
},
.formats = .{"relative"},
.requests = .{
.range = true,
.full = .{ .delta = true },
},
.multilineTokenSupport = false,
.overlappingTokenSupport = false,
.serverCancelSupport = true,
.augmentsSyntaxTokens = true,
},
.linkedEditingRange = .{ .dynamicRegistration = true },
.typeHierarchy = .{ .dynamicRegistration = true },
.inlineValue = .{ .dynamicRegistration = true },
.inlayHint = .{
.dynamicRegistration = true,
.resolveSupport = .{
.properties = .{
"tooltip",
"textEdits",
"label.tooltip",
"label.location",
"label.command",
},
},
},
.diagnostic = .{
.dynamicRegistration = true,
.relatedDocumentSupport = false,
},
},
.window = .{
.showMessage = .{
.messageActionItem = .{ .additionalPropertiesSupport = true },
},
.showDocument = .{ .support = true },
.workDoneProgress = false,
},
.general = .{
.staleRequestSupport = .{
.cancel = true,
.retryOnContentModified = .{
"textDocument/semanticTokens/full",
"textDocument/semanticTokens/range",
"textDocument/semanticTokens/full/delta",
},
},
.regularExpressions = .{
.engine = "ECMAScript",
.version = "ES2020",
},
.markdown = .{
.parser = "marked",
.version = "1.1.0",
},
.positionEncodings = .{"utf-8"},
},
.notebookDocument = .{
.synchronization = .{
.dynamicRegistration = true,
.executionSummarySupport = true,
},
},
},
});
}
fn fmt_lsp_name_func(bytes: []const u8) std.fmt.Formatter(format_lsp_name_func) {
return .{ .data = bytes };
}
fn format_lsp_name_func(
bytes: []const u8,
comptime fmt: []const u8,
options: std.fmt.FormatOptions,
writer: anytype,
) !void {
_ = fmt;
_ = options;
var iter: []const u8 = bytes;
var len = cbor.decodeArrayHeader(&iter) catch return;
var first: bool = true;
while (len > 0) : (len -= 1) {
var value: []const u8 = undefined;
if (!(cbor.matchValue(&iter, cbor.extract(&value)) catch return))
return;
if (first) first = false else try writer.writeAll(" ");
try writer.writeAll(value);
}
}
const eol = '\n';
const GetLineOfFileError = (OutOfMemoryError || std.fs.File.OpenError || std.fs.File.Reader.Error);
fn get_line_of_file(self: *Self, allocator: std.mem.Allocator, file_path: []const u8, line_: usize) GetLineOfFileError![]const u8 {
const line = line_ + 1;
const file = try std.fs.cwd().openFile(file_path, .{ .mode = .read_only });
defer file.close();
const stat = try file.stat();
var buf = try allocator.alloc(u8, @intCast(stat.size));
defer allocator.free(buf);
const read_size = try file.reader().readAll(buf);
if (read_size != @as(@TypeOf(read_size), @intCast(stat.size)))
@panic("get_line_of_file: buffer underrun");
var line_count: usize = 1;
for (0..buf.len) |i| {
if (line_count == line)
return self.get_line(allocator, buf[i..]);
if (buf[i] == eol) line_count += 1;
}
return allocator.dupe(u8, "");
}
pub fn get_line(_: *Self, allocator: std.mem.Allocator, buf: []const u8) ![]const u8 {
for (0..buf.len) |i| {
if (buf[i] == eol) return allocator.dupe(u8, buf[0..i]);
}
return allocator.dupe(u8, buf);
}