diff --git a/src/Server.zig b/src/Server.zig index 8447120..d2895f6 100644 --- a/src/Server.zig +++ b/src/Server.zig @@ -197,20 +197,6 @@ fn showMessage(server: *Server, writer: anytype, message_type: types.MessageType }); } -// TODO: Is this correct or can we get a better end? -fn astLocationToRange(loc: Ast.Location) types.Range { - return .{ - .start = .{ - .line = @intCast(i64, loc.line), - .character = @intCast(i64, loc.column), - }, - .end = .{ - .line = @intCast(i64, loc.line), - .character = @intCast(i64, loc.column), - }, - }; -} - fn publishDiagnostics(server: *Server, writer: anytype, handle: DocumentStore.Handle) !void { const tracy_zone = tracy.trace(@src()); defer tracy_zone.end(); @@ -221,14 +207,12 @@ fn publishDiagnostics(server: *Server, writer: anytype, handle: DocumentStore.Ha var diagnostics = std.ArrayListUnmanaged(types.Diagnostic){}; for (tree.errors) |err| { - const loc = tree.tokenLocation(0, err.token); - var mem_buffer: [256]u8 = undefined; var fbs = std.io.fixedBufferStream(&mem_buffer); try tree.renderError(err, fbs.writer()); try diagnostics.append(allocator, .{ - .range = astLocationToRange(loc), + .range = offsets.tokenToRange(tree, err.token, server.offset_encoding) catch continue, .severity = .Error, .code = @tagName(err.tag), .source = "zls", @@ -267,16 +251,18 @@ fn publishDiagnostics(server: *Server, writer: anytype, handle: DocumentStore.Ha if (first.len <= 1) break :lin; } else break; - const pos = types.Position{ + const position = types.Position{ .line = (try std.fmt.parseInt(i64, pos_and_diag_iterator.next().?, 10)) - 1, .character = (try std.fmt.parseInt(i64, pos_and_diag_iterator.next().?, 10)) - 1, }; + const range = try offsets.tokenPositionToRange(tree, position, server.offset_encoding); + const msg = pos_and_diag_iterator.rest()[1..]; if (std.mem.startsWith(u8, msg, "error: ")) { try diagnostics.append(allocator, .{ - .range = .{ .start = pos, .end = pos }, + .range = range, .severity = .Error, .code = "ast_check", .source = "zls", @@ -292,7 +278,7 @@ fn publishDiagnostics(server: *Server, writer: anytype, handle: DocumentStore.Ha const location = types.Location{ .uri = handle.uri(), - .range = .{ .start = pos, .end = pos }, + .range = range, }; fresh[fresh.len - 1] = .{ @@ -303,7 +289,7 @@ fn publishDiagnostics(server: *Server, writer: anytype, handle: DocumentStore.Ha latestDiag.relatedInformation = fresh; } else { try diagnostics.append(allocator, .{ - .range = .{ .start = pos, .end = pos }, + .range = range, .severity = .Error, .code = "ast_check", .source = "zls", @@ -336,7 +322,7 @@ fn publishDiagnostics(server: *Server, writer: anytype, handle: DocumentStore.Ha if (std.mem.startsWith(u8, import_str, "\"./")) { try diagnostics.append(allocator, .{ - .range = astLocationToRange(tree.tokenLocation(0, import_str_token)), + .range = offsets.tokenToRange(tree, import_str_token, server.offset_encoding) catch continue, .severity = .Hint, .code = "dot_slash_import", .source = "zls", @@ -362,14 +348,12 @@ fn publishDiagnostics(server: *Server, writer: anytype, handle: DocumentStore.Ha if (func.extern_export_inline_token != null) break :blk; if (func.name_token) |name_token| { - const loc = tree.tokenLocation(0, name_token); - const is_type_function = analysis.isTypeFunction(tree, func); const func_name = tree.tokenSlice(name_token); if (!is_type_function and !analysis.isCamelCase(func_name)) { try diagnostics.append(allocator, .{ - .range = astLocationToRange(loc), + .range = offsets.tokenToRange(tree, name_token, server.offset_encoding) catch continue, .severity = .Hint, .code = "bad_style", .source = "zls", @@ -377,7 +361,7 @@ fn publishDiagnostics(server: *Server, writer: anytype, handle: DocumentStore.Ha }); } else if (is_type_function and !analysis.isPascalCase(func_name)) { try diagnostics.append(allocator, .{ - .range = astLocationToRange(loc), + .range = offsets.tokenToRange(tree, name_token, server.offset_encoding) catch continue, .severity = .Hint, .code = "bad_style", .source = "zls", diff --git a/src/offsets.zig b/src/offsets.zig index a6446c2..6573e80 100644 --- a/src/offsets.zig +++ b/src/offsets.zig @@ -142,13 +142,22 @@ pub fn tokenRelativeLocation(tree: Ast, start_index: usize, token_start: usize, /// Asserts the token is comprised of valid utf8 pub fn tokenLength(tree: Ast, token: Ast.TokenIndex, encoding: Encoding) usize { - const token_loc = tokenLocation(tree, token); - if (encoding == .utf8) - return token_loc.end - token_loc.start; + return locationLength(tokenLocation(tree, token), tree, encoding); +} - var i: usize = token_loc.start; +/// Token location inside source +pub const Loc = struct { + start: usize, + end: usize, +}; + +pub fn locationLength(loc: Loc, tree: Ast, encoding: Encoding) usize { + if (encoding == .utf8) + return loc.end - loc.start; + + var i: usize = loc.start; var utf16_len: usize = 0; - while (i < token_loc.end) { + while (i < loc.end) { const n = std.unicode.utf8ByteSequenceLength(tree.source[i]) catch unreachable; const codepoint = std.unicode.utf8Decode(tree.source[i .. i + n]) catch unreachable; if (codepoint < 0x10000) { @@ -161,12 +170,6 @@ pub fn tokenLength(tree: Ast, token: Ast.TokenIndex, encoding: Encoding) usize { return utf16_len; } -/// Token location inside source -pub const Loc = struct { - start: usize, - end: usize, -}; - pub fn tokenLocation(tree: Ast, token_index: Ast.TokenIndex) Loc { const start = tree.tokens.items(.start)[token_index]; const tag = tree.tokens.items(.tag)[token_index]; @@ -183,6 +186,50 @@ pub fn tokenLocation(tree: Ast, token_index: Ast.TokenIndex) Loc { return .{ .start = token.loc.start, .end = token.loc.end }; } +/// returns the range of the given token at `token_index` +pub fn tokenToRange(tree: Ast, token_index: Ast.TokenIndex, encoding: Encoding) !types.Range { + const loc = try tokenRelativeLocation(tree, 0, tree.tokens.items(.start)[token_index], encoding); + const length = tokenLength(tree, token_index, encoding); + + return types.Range{ + .start = .{ + .line = @intCast(i64, loc.line), + .character = @intCast(i64, loc.column), + }, + .end = .{ + .line = @intCast(i64, loc.line), + .character = @intCast(i64, loc.column + length), + }, + }; +} + +/// returns the range of a token pointed to by `position` +pub fn tokenPositionToRange(tree: Ast, position: types.Position, encoding: Encoding) !types.Range { + const doc = .{ + .uri = undefined, + .text = tree.source, + .mem = undefined, + }; + const document_position = try documentPosition(doc, position, encoding); + + var tokenizer: std.zig.Tokenizer = .{ + .buffer = tree.source, + .index = document_position.absolute_index, + .pending_invalid_token = null, + }; + const token = tokenizer.next(); + const loc: Loc = .{ .start = token.loc.start, .end = token.loc.end }; + const length = locationLength(loc, tree, encoding); + + return types.Range{ + .start = position, + .end = .{ + .line = position.line, + .character = position.character + @intCast(i64, length), + }, + }; +} + pub fn documentRange(doc: types.TextDocument, encoding: Encoding) !types.Range { var line_idx: i64 = 0; var curr_line: []const u8 = doc.text; diff --git a/src/references.zig b/src/references.zig index 368f735..05a63bb 100644 --- a/src/references.zig +++ b/src/references.zig @@ -8,19 +8,9 @@ const log = std.log.scoped(.references); const ast = @import("ast.zig"); fn tokenReference(handle: *DocumentStore.Handle, tok: Ast.TokenIndex, encoding: offsets.Encoding, context: anytype, comptime handler: anytype) !void { - const loc = offsets.tokenRelativeLocation(handle.tree, 0, handle.tree.tokens.items(.start)[tok], encoding) catch return; try handler(context, types.Location{ .uri = handle.uri(), - .range = .{ - .start = .{ - .line = @intCast(i64, loc.line), - .character = @intCast(i64, loc.column), - }, - .end = .{ - .line = @intCast(i64, loc.line), - .character = @intCast(i64, loc.column + offsets.tokenLength(handle.tree, tok, encoding)), - }, - }, + .range = offsets.tokenToRange(handle.tree, tok,encoding) catch return, }); }