MATLAB language server - v1.3.4

.vscode/launch.json

@@ -12,7 +12,7 @@
             ],
             "internalConsoleOptions": "openOnSessionStart",
             "name": "Mocha Tests",
-            "program": "${workspaceFolder}/node_modules/mocha/bin/_mocha",
+            "program": "${workspaceFolder}/node_modules/mocha/bin/mocha",
             "request": "launch",
             "skipFiles": [
                 "<node_internals>/**"

README.md

@@ -10,12 +10,14 @@ MATLAB language server implements several Language Server Protocol features and
 * Code diagnostics — [publishDiagnostics](https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#textDocument_publishDiagnostics)
 * Quick fixes — [codeActionProvider](https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#textDocument_codeAction)
 * Document formatting — [documentFormattingProvider](https://microsoft.github.io/language-server-protocol/specifications/specification-current/#textDocument_formatting)
+* Document range formatting - [documentRangeFormattingProvider](https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#textDocument_rangeFormatting)
 * Code completions — [completionProvider](https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#textDocument_completion)
 * Function signature help — [signatureHelpProvider](https://microsoft.github.io/language-server-protocol/specifications/specification-current/#textDocument_signatureHelp)
 * Go to definition — [definitionProvider](https://microsoft.github.io/language-server-protocol/specifications/specification-current/#textDocument_definition)
 * Go to references — [referencesProvider](https://microsoft.github.io/language-server-protocol/specifications/specification-current/#textDocument_references)
-* Document symbols — [documentSymbol](https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#textDocument_documentSymbol)
+* Document symbols — [documentSymbolProvider](https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#textDocument_documentSymbol)
 * Symbol rename - [renameProvider](https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#textDocument_rename)
+* Code folding - [foldingRangeProvider](https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#textDocument_foldingRange)
 
 ## Clients
 MATLAB language server supports these editors by installing the corresponding extension:
@@ -26,6 +28,18 @@ MATLAB language server supports these editors by installing the corresponding ex
 
 ### Unreleased
 
+### 1.3.4
+Release date: 2025-07-31
+
+Added:
+* Support for document range formatting
+* Document symbol model now include methods, properties, and enumerations for improved navigation
+
+Fixed:
+* Resolves a crash that occurs when language server is used over stdin/stdout
+* Resolves issue where language server stops working after calling `restoredefaultpath`
+* Applied patches for CVE-2023-44270, CVE-2024-11831, CVE-2025-27789, CVE-2025-30359, CVE-2025-30360, CVE-2025-32996, and CVE-2025-5889
+
 ### 1.3.3
 Release date: 2025-05-15
 

matlab/+matlabls/+handlers/+formatting/formatCode.m

@@ -1,17 +1,103 @@
-function formattedCode = formatCode (codeToFormat, options)
-    % FORMATCODE Formats the given MATLAB code according to the specified options.
+function formattedCode = formatCode (code, startLine, endLine, options)
+    % FORMATCODE Formats the specifid line range of the given MATLAB
+    % code according to the provided options.
+    %
+    % Note: `startLine` and `endLine` should be provided as 0-based line numbers.
 
     % Copyright 2025 The MathWorks, Inc.
 
-    s = settings;
-
     % Update settings (temporarily) for formatting
+    s = settings;
     cleanupObj1 = setTemporaryValue(s.matlab.editor.tab.InsertSpaces, options.insertSpaces); %#ok<NASGU> 
     cleanupObj2 = setTemporaryValue(s.matlab.editor.tab.TabSize, options.tabSize); %#ok<NASGU>
     cleanupObj3 = setTemporaryValue(s.matlab.editor.tab.IndentSize, options.tabSize); %#ok<NASGU>
 
-    % Format code
-    formattedCode = indentcode(codeToFormat);
+    % Formatting logic expects 1-based line numbers
+    formattedCode = doFormatLines(code, startLine + 1, endLine + 1, options);
+end
+
+function formattedCode = doFormatLines (code, startLine, endLine, options)
+    % Standardize line endings to \n
+    code = regexprep(code , sprintf('(\r\n)|\r|\n'), newline);
+
+    lines = strsplit(code, newline, CollapseDelimiters = false);
+
+    % Determine the range of lines to format
+    if startLine == 1
+        % Case 1: start is the first code line
+        linesToFormat = lines(startLine:endLine);
+    else
+        % Case 2: start is not the first code line
+        % In this case, we include the preceding line when formatting to
+        % ensure the indentation of startLine is correct with respect to
+        % the previous line.
+        linesToFormat = lines(startLine-1:endLine);
+    end
+
+    % Format the lines using the indentcode function
+    formattedCode = indentcode(strjoin(linesToFormat, '\n'));
+    formattedLines = strsplit(formattedCode, '\n', CollapseDelimiters = false);
+
+    % Replace the respective lines in the original snippet
+    if startLine == 1
+        lines(startLine:endLine) = formattedLines;
+    else
+        % Calculate the difference in indentation
+        originalIndent = regexp(lines{startLine-1}, '^\s*', 'match', 'once');
+        newIndent = regexp(formattedLines{1}, '^\s*', 'match', 'once');
+        diff = getWhitespaceLength(originalIndent, options.tabSize) - getWhitespaceLength(newIndent, options.tabSize);
+
+        if diff ~= 0
+            % Adjust whitespace indent of formatted lines [startLine:endLine]
+            for i = 2:numel(formattedLines)
+                if options.insertSpaces
+                    formattedLines{i} = append(getWhitespaceStringOfLength(diff, true, options.tabSize), formattedLines{i});
+                else
+                    existingWhitespace = regexp(formattedLines{i}, '^\s*', 'match', 'once');
+                    existingWhitespaceLength = getWhitespaceLength(existingWhitespace, options.tabSize);
+                    targetWhitespaceLength = existingWhitespaceLength + diff;
+
+                    newWhitespace = getWhitespaceStringOfLength(targetWhitespaceLength, false, options.tabSize);
+                    formattedLines{i} = append(newWhitespace, strip(formattedLines{i}, 'left'));
+                end
+            end
+        end
+
+        % Replace the formatted lines
+        lines(startLine:endLine) = formattedLines(2:end);
+    end
+
+    % Join the lines back into a single string
+    formattedCode = strjoin(lines, '\n');
+end
+
+function lengthInSpaces = getWhitespaceLength (whitespaceStr, tabSize)
+    lengthInSpaces = 0;
+
+    % Iterate through each character in the string
+    for i = 1:length(whitespaceStr)
+        charAtPos = whitespaceStr(i);
+
+        if charAtPos == ' '
+            % Space character - add length of 1
+            lengthInSpaces = lengthInSpaces + 1;
+        else
+            % Assume tab character
+            % The length will now be the next multiple of `tabSize`
+            lengthInSpaces = floor(lengthInSpaces / tabSize + 1) * tabSize;
+        end
+    end
+end
+
+function whitespaceStr = getWhitespaceStringOfLength (length, insertSpaces, tabSize)
+    if insertSpaces
+         whitespaceStr = blanks(length);
+    else
+        % Calculate how many tab characters and additional spaces are needed
+        nTabs = floor(length / tabSize);
+        nSpaces = rem(length, tabSize);
+        whitespaceStr = append(repmat(char(9), 1, nTabs), blanks(nSpaces));
+    end
 end
 
 function cleanupObj = setTemporaryValue (setting, tempValue)

matlab/initmatlabls.m

@@ -12,16 +12,8 @@ function initmatlabls (outFile)
 
     % Ensure the language server code is on the path
     folder = fileparts(mfilename('fullpath'));
-    addpath(folder)
 
-    try
-        if isMATLABReleaseOlderThan('R2023a')
-            addpath(fullfile(folder, 'shadows', 'clc'));
-        end
-    catch ME
-        disp('Error while attempting to add shadow directory to path')
-        disp(ME.message)
-    end
+    updatePath(folder);
 
     try
         s = settings;
@@ -75,4 +67,30 @@ function logConnectionData (outFile)
     if ~status
         error('Failed to rename connection file.')
     end
+
+end
+
+function updatePath(languageServerFolder)
+    addpath(languageServerFolder)
+
+    try
+        addRestoreDefaultPathShadow(languageServerFolder);
+
+        if isMATLABReleaseOlderThan('R2023a')
+            addpath(fullfile(languageServerFolder, 'shadows', 'clc'));
+        end
+    catch ME
+        disp('Error while attempting to add shadow directory to path')
+        disp(ME.message)
+    end
+end
+
+function addRestoreDefaultPathShadow(languageServerFolder)
+    currentDirectory = pwd;
+    cd(fullfile(matlabroot, 'toolbox', 'local'));
+    originalRestoreDefaultPath = @restoredefaultpath;
+    cd(matlabroot);
+    addpath(fullfile(languageServerFolder, 'shadows', 'restoredefaultpath'));
+    restoredefaultpath('SET', originalRestoreDefaultPath, @() updatePath(languageServerFolder));
+    cd(currentDirectory);
 end

matlab/shadows/restoredefaultpath/restoredefaultpath.m

@@ -0,0 +1,17 @@
+function restoredefaultpath(varargin)
+    mlock
+    persistent originalRestoreDefaultPath;
+    persistent pathUpdateFunction;
+    if nargin == 3 && ischar(varargin{1}) && isequal(varargin{1}, 'SET')
+        originalRestoreDefaultPath = varargin{2};
+        pathUpdateFunction = varargin{3};
+        return;
+    end
+
+    if isempty(originalRestoreDefaultPath)
+        error('Matlab Language Server - RestoreDefaultPath shadow is uninitialized.');
+    end
+
+    originalRestoreDefaultPath();
+    pathUpdateFunction();
+end