try rust parser

Reviewed-on: #28

LICENSE

@@ -1,21 +1,661 @@
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+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+16. Limitation of Liability.
+
+IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+17. Interpretation of Sections 15 and 16.
+
+If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    nx-post-support
+    Copyright (C) 2025  Christoph
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source. For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code. There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<https://www.gnu.org/licenses/>.

README.md

@@ -46,4 +46,4 @@ This extension is actively maintained. For issues or feature requests, please vi
 
 ## License
 
-MIT License - see LICENSE file for details.
+AGPL-3.0 License - see LICENSE file for details.

package.json

@@ -1,8 +1,8 @@
 {
   "name": "nx-post-support",
   "displayName": "NX Postprocessor Support",
-  "description": "",
+  "description": "VS Code extension for NX CAM postprocessor development with syntax highlighting, formatting, linting, and auto-completion for CDL, TCL, and DEF files",
-  "version": "2025.8.300",
+  "version": "2025.9.100",
   "publisher": "Christoph",
   "icon": "images/nx-1.png",
   "serverInfo": {

server/noxfile.py

@@ -5,23 +5,33 @@
 import json
 import os
 import pathlib
+import sys
+import tomllib
 import urllib.request as url_lib
 from typing import List
 
 import nox  # pylint: disable=import-error
 
 
+def _read_dependencies() -> List[str]:
+    """Read project dependencies from pyproject.toml."""
+    pyproject = tomllib.loads(pathlib.Path("pyproject.toml").read_text())
+    return list(pyproject.get("project", {}).get("dependencies", []))
+
+
 def _install_bundle(session: nox.Session) -> None:
-    session.install(
+    deps = _read_dependencies()
-        "-t",
+    session.run(
+        "uv",
+        "pip",
+        "install",
+        "--target",
         "./libs",
         "--no-cache-dir",
-        "--implementation",
         "py",
-        "--no-deps",
         "--upgrade",
-        "-r",
+        *deps,
-        "./requirements.txt",
+        external=True,
     )
 
 
@@ -34,24 +44,6 @@ def _check_files(names: List[str]) -> None:
             raise Exception(f"Please update {os.fspath(file_path)}.")
 
 
-def _update_pip_packages(session: nox.Session) -> None:
-    session.install("wheel", "pip-tools==7.3.0")
-    session.run(
-        "pip-compile",
-        "--generate-hashes",
-        "--resolver=backtracking",
-        "--upgrade",
-        "./requirements.in",
-    )
-    session.run(
-        "pip-compile",
-        "--generate-hashes",
-        "--resolver=backtracking",
-        "--upgrade",
-        "./src/test/python_tests/requirements.in",
-    )
-
-
 def _get_package_data(package):
     json_uri = f"https://registry.npmjs.org/{package}"
     with url_lib.urlopen(json_uri) as response:
@@ -80,13 +72,8 @@ def _update_npm_packages(session: nox.Session) -> None:
             package_json["devDependencies"][package] = latest
 
     # Ensure engine matches the package
-    if (
+    if package_json["engines"]["vscode"] != package_json["devDependencies"]["@types/vscode"]:
-        package_json["engines"]["vscode"]
+        print("Please check VS Code engine version and @types/vscode version in package.json.")
-        != package_json["devDependencies"]["@types/vscode"]
-    ):
-        print(
-            "Please check VS Code engine version and @types/vscode version in package.json."
-        )
 
     new_package_json = json.dumps(package_json, indent=4)
     # JSON dumps uses \n for line ending on all platforms by default
@@ -97,65 +84,60 @@ def _update_npm_packages(session: nox.Session) -> None:
 
 
 def _setup_template_environment(session: nox.Session) -> None:
-    session.install("wheel", "pip-tools")
+    """Install project dependencies into the bundled libs directory."""
-    session.run(
-        "pip-compile",
-        "--generate-hashes",
-        "--resolver=backtracking",
-        "--upgrade",
-        "./requirements.in",
-    )
-    # session.run(
-    #     "pip-compile",
-    #     "--generate-hashes",
-    #     "--resolver=backtracking",
-    #     "--upgrade",
-    #     "./src/test/python_tests/requirements.in",
-    # )
     _install_bundle(session)
 
 
 @nox.session()
 def setup(session: nox.Session) -> None:
     """Sets up the template for development."""
-    session.install("pip<24")
     _setup_template_environment(session)
 
 
 @nox.session()
 def tests(session: nox.Session) -> None:
     """Runs all the tests for the extension."""
-    session.install("-r", "src/test/python_tests/requirements.txt")
+    deps = _read_dependencies()
-    session.run("pytest", "src/test/python_tests")
+    session.run("uv", "pip", "install", "--python", sys.executable, *deps, external=True)
+    session.run("uv", "pip", "install", "--python", sys.executable, "pytest", external=True)
+    session.run("pytest", "tests/python_tests")
 
 
 @nox.session()
 def lint(session: nox.Session) -> None:
     """Runs linter and formatter checks on python files."""
-    session.install("-r", "./requirements.txt")
+    deps = _read_dependencies()
-    session.install("-r", "src/test/python_tests/requirements.txt")
+    session.run("uv", "pip", "install", "--python", sys.executable, *deps, external=True)
-
+    session.run(
-    session.install("pylint")
+        "uv",
+        "pip",
+        "install",
+        "--python",
+        sys.executable,
+        "pytest",
+        "pylint",
+        "black",
+        "isort",
+        external=True,
+    )
     session.run("pylint", "-d", "W0511", "./bundled/tool")
     session.run(
         "pylint",
         "-d",
         "W0511",
-        "--ignore=./src/test/python_tests/test_data",
+        "--ignore=./tests/python_tests/test_data",
-        "./src/test/python_tests",
+        "./tests/python_tests",
     )
     session.run("pylint", "-d", "W0511", "noxfile.py")
 
     # check formatting using black
-    session.install("black")
     session.run("black", "--check", "./bundled/tool")
-    session.run("black", "--check", "./src/test/python_tests")
+    session.run("black", "--check", "./tests/python_tests")
     session.run("black", "--check", "noxfile.py")
 
     # check import sorting using isort
-    session.install("isort")
     session.run("isort", "--check", "./bundled/tool")
-    session.run("isort", "--check", "./src/test/python_tests")
+    session.run("isort", "--check", "./tests/python_tests")
     session.run("isort", "--check", "noxfile.py")
 
     # check typescript code
@@ -171,9 +153,12 @@ def build_package(session: nox.Session) -> None:
     session.run("npm", "run", "vsce-package", external=True)
 
 
+def _update_uv_lock(session: nox.Session) -> None:
+    session.run("uv", "lock", "--upgrade", external=True)
+
+
 @nox.session()
 def update_packages(session: nox.Session) -> None:
-    """Update pip and npm packages."""
+    """Update Python and npm packages."""
-    session.install("wheel", "pip-tools")
+    _update_uv_lock(session)
-    _update_pip_packages(session)
     _update_npm_packages(session)

server/pyproject.toml

@@ -0,0 +1,14 @@
+[project]
+name = "nx-post-support-server"
+version = "0.1.0"
+description = "Python language server for NX Postprocessor Support"
+requires-python = ">=3.8"
+dependencies = [
+    "pygls",
+    "packaging",
+    "tclint",
+]
+
+[build-system]
+requires = ["setuptools>=61.0"]
+build-backend = "setuptools.build_meta"

server/requirements.in

@@ -1,16 +0,0 @@
-# This file is used to generate requirements.txt.
-# NOTE:
-# Use Python 3.8 or greater which ever is the minimum version of the python
-# you plan on supporting when creating the environment or using pip-tools.
-# Only run the commands below to manully upgrade packages in requirements.txt:
-# 1) python -m pip install pip-tools
-# 2) pip-compile --generate-hashes --resolver=backtracking --upgrade ./requirements.in
-# If you are using nox commands to setup or build package you don't need to
-# run the above commands manually.
-
-# Required packages
-pygls
-packaging
-
-# TODO: Add your tool here
-tclint

server/requirements.txt

@@ -1,60 +0,0 @@
-#
-# This file is autogenerated by pip-compile with Python 3.11
-# by the following command:
-#
-#    pip-compile --generate-hashes ./requirements.in
-#
-attrs==25.3.0 \
-    --hash=sha256:427318ce031701fea540783410126f03899a97ffc6f61596ad581ac2e40e3bc3 \
-    --hash=sha256:75d7cefc7fb576747b2c81b4442d4d4a1ce0900973527c011d1030fd3bf4af1b
-    # via
-    #   cattrs
-    #   lsprotocol
-cattrs==25.1.1 \
-    --hash=sha256:1b40b2d3402af7be79a7e7e097a9b4cd16d4c06e6d526644b0b26a063a1cc064 \
-    --hash=sha256:c914b734e0f2d59e5b720d145ee010f1fd9a13ee93900922a2f3f9d593b8382c
-    # via
-    #   lsprotocol
-    #   pygls
-importlib-metadata==6.8.0 \
-    --hash=sha256:3ebb78df84a805d7698245025b975d9d67053cd94c79245ba4b3eb694abe68bb \
-    --hash=sha256:dbace7892d8c0c4ac1ad096662232f831d4e64f4c4545bd53016a3e9d4654743
-    # via tclint
-lsprotocol==2023.0.1 \
-    --hash=sha256:c75223c9e4af2f24272b14c6375787438279369236cd568f596d4951052a60f2 \
-    --hash=sha256:cc5c15130d2403c18b734304339e51242d3018a05c4f7d0f198ad6e0cd21861d
-    # via pygls
-packaging==25.0 \
-    --hash=sha256:29572ef2b1f17581046b3a2227d5c611fb25ec70ca1ba8554b24b0e69331a484 \
-    --hash=sha256:d443872c98d677bf60f6a1f2f8c1cb748e8fe762d2bf9d3148b5599295b0fc4f
-    # via -r ./requirements.in
-pathspec==0.11.2 \
-    --hash=sha256:1d6ed233af05e679efb96b1851550ea95bbb64b7c490b0f5aa52996c11e92a20 \
-    --hash=sha256:e0d8d0ac2f12da61956eb2306b69f9469b42f4deb0f3cb6ed47b9cce9996ced3
-    # via tclint
-ply==3.11 \
-    --hash=sha256:00c7c1aaa88358b9c765b6d3000c6eec0ba42abca5351b095321aef446081da3 \
-    --hash=sha256:096f9b8350b65ebd2fd1346b12452efe5b9607f7482813ffca50c22722a807ce
-    # via tclint
-pygls==1.3.1 \
-    --hash=sha256:140edceefa0da0e9b3c533547c892a42a7d2fd9217ae848c330c53d266a55018 \
-    --hash=sha256:6e00f11efc56321bdeb6eac04f6d86131f654c7d49124344a9ebb968da3dd91e
-    # via
-    #   -r ./requirements.in
-    #   tclint
-tclint==0.6.0 \
-    --hash=sha256:8dd4d7b519e040c164615df8072cc4c28def4bfdc9d2a8672a280b0984b45fc3 \
-    --hash=sha256:f60d2378dd203c0ee1268e9f9138f17cb6106b8824b727e584f054c5932a87db
-    # via -r ./requirements.in
-typing-extensions==4.14.1 \
-    --hash=sha256:38b39f4aeeab64884ce9f74c94263ef78f3c22467c8724005483154c26648d36 \
-    --hash=sha256:d1e1e3b58374dc93031d6eda2420a48ea44a36c2b4766a4fdeb3710755731d76
-    # via cattrs
-voluptuous==0.15.2 \
-    --hash=sha256:016348bc7788a9af9520b1764ebd4de0df41fe2138ebe9e06fa036bf86a65566 \
-    --hash=sha256:6ffcab32c4d3230b4d2af3a577c87e1908a714a11f6f95570456b1849b0279aa
-    # via tclint
-zipp==3.23.0 \
-    --hash=sha256:071652d6115ed432f5ce1d34c336c0adfd6a884660d1e9712a256d3d3bd4b14e \
-    --hash=sha256:a07157588a12518c9d4034df3fbbee09c814741a33ff63c05fa29d26a2404166
-    # via importlib-metadata

server/src/tools/tcl_parser_client.py

@@ -0,0 +1,108 @@
+# tools/tcl_parser_client.py
+import asyncio
+import json
+import uuid
+from typing import Optional, Dict, Any
+
+
+class ParserProcess:
+    """
+    Async wrapper for the NDJSON stdin/stdout parser process.
+    Start once at server startup; call parse() concurrently.
+    """
+
+    def __init__(self, cmd):
+        self.cmd = cmd
+        self.proc: Optional[asyncio.Process] = None
+        self._write_lock = asyncio.Lock()
+        self._pending: Dict[str, asyncio.Future] = {}
+        self._reader_task: Optional[asyncio.Task] = None
+
+    async def start(self):
+        if self.proc:
+            return
+        self.proc = await asyncio.create_subprocess_exec(
+            *self.cmd,
+            stdin=asyncio.subprocess.PIPE,
+            stdout=asyncio.subprocess.PIPE,
+            stderr=asyncio.subprocess.PIPE,
+        )
+        self._reader_task = asyncio.create_task(self._reader_loop())
+        asyncio.create_task(self._read_stderr())
+
+    async def stop(self):
+        if not self.proc:
+            return
+        try:
+            self.proc.terminate()
+        except Exception:
+            pass
+        await self.proc.wait()
+        if self._reader_task:
+            self._reader_task.cancel()
+        self.proc = None
+
+    async def parse(self, tcl: str, timeout: float = 5.0) -> str:
+        """
+        Send `tcl` to the parser and await the S-expression string result.
+        Raises on parse error or if the parser dies.
+        """
+        if not self.proc:
+            await self.start()
+
+        req_id = uuid.uuid4().hex
+        payload = json.dumps({"id": req_id, "tcl": tcl}, separators=(",", ":"))
+
+        fut = asyncio.get_event_loop().create_future()
+        self._pending[req_id] = fut
+
+        async with self._write_lock:
+            assert self.proc and self.proc.stdin
+            self.proc.stdin.write((payload + "\n").encode("utf-8"))
+            await self.proc.stdin.drain()
+
+        try:
+            result = await asyncio.wait_for(fut, timeout)
+            return result
+        finally:
+            self._pending.pop(req_id, None)
+
+    async def _reader_loop(self):
+        assert self.proc and self.proc.stdout
+        reader = self.proc.stdout
+        try:
+            while True:
+                line = await reader.readline()
+                if not line:
+                    # parser process closed
+                    for f in list(self._pending.values()):
+                        if not f.done():
+                            f.set_exception(RuntimeError("parser process terminated"))
+                    break
+                try:
+                    obj = json.loads(line.decode("utf-8", "replace"))
+                except Exception as e:
+                    # ignore malformed lines or log
+                    continue
+                rid = obj.get("id")
+                fut = self._pending.get(rid)
+                if fut and not fut.done():
+                    if obj.get("ok"):
+                        fut.set_result(obj.get("result"))
+                    else:
+                        fut.set_exception(RuntimeError(obj.get("error") or "parse error"))
+        except asyncio.CancelledError:
+            return
+
+    async def _read_stderr(self):
+        # optional: log parser stderr
+        assert self.proc and self.proc.stderr
+        try:
+            while True:
+                line = await self.proc.stderr.readline()
+                if not line:
+                    break
+                # Replace this with your LSP server logging
+                print("[tcl_parser stderr]", line.decode("utf-8", "replace").rstrip())
+        except asyncio.CancelledError:
+            return

tcl_parser/Cargo.lock

@@ -0,0 +1,216 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "aho-corasick"
+version = "1.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e60d3430d3a69478ad0993f19238d2df97c507009a52b3c10addcd7f6bcb916"
+dependencies = [
+ "memchr",
+]
+
+[[package]]
+name = "anyhow"
+version = "1.0.99"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b0674a1ddeecb70197781e945de4b3b8ffb61fa939a5597bcf48503737663100"
+
+[[package]]
+name = "cc"
+version = "1.2.34"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "42bc4aea80032b7bf409b0bc7ccad88853858911b7713a8062fdc0623867bedc"
+dependencies = [
+ "shlex",
+]
+
+[[package]]
+name = "equivalent"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "877a4ace8713b0bcf2a4e7eec82529c029f1d0619886d18145fea96c3ffe5c0f"
+
+[[package]]
+name = "hashbrown"
+version = "0.15.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9229cfe53dfd69f0609a49f65461bd93001ea1ef889cd5529dd176593f5338a1"
+
+[[package]]
+name = "indexmap"
+version = "2.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f2481980430f9f78649238835720ddccc57e52df14ffce1c6f37391d61b563e9"
+dependencies = [
+ "equivalent",
+ "hashbrown",
+]
+
+[[package]]
+name = "itoa"
+version = "1.0.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4a5f13b858c8d314ee3e8f639011f7ccefe71f97f96e50151fb991f267928e2c"
+
+[[package]]
+name = "memchr"
+version = "2.7.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "32a282da65faaf38286cf3be983213fcf1d2e2a58700e808f83f4ea9a4804bc0"
+
+[[package]]
+name = "proc-macro2"
+version = "1.0.101"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "89ae43fd86e4158d6db51ad8e2b80f313af9cc74f5c0e03ccb87de09998732de"
+dependencies = [
+ "unicode-ident",
+]
+
+[[package]]
+name = "quote"
+version = "1.0.40"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1885c039570dc00dcb4ff087a89e185fd56bae234ddc7f056a945bf36467248d"
+dependencies = [
+ "proc-macro2",
+]
+
+[[package]]
+name = "regex"
+version = "1.11.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "23d7fd106d8c02486a8d64e778353d1cffe08ce79ac2e82f540c86d0facf6912"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-automata",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-automata"
+version = "0.4.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6b9458fa0bfeeac22b5ca447c63aaf45f28439a709ccd244698632f9aa6394d6"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-syntax"
+version = "0.8.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "caf4aa5b0f434c91fe5c7f1ecb6a5ece2130b02ad2a590589dda5146df959001"
+
+[[package]]
+name = "ryu"
+version = "1.0.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "28d3b2b1366ec20994f1fd18c3c594f05c5dd4bc44d8bb0c1c632c8d6829481f"
+
+[[package]]
+name = "serde"
+version = "1.0.219"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5f0e2c6ed6606019b4e29e69dbaba95b11854410e5347d525002456dbbb786b6"
+dependencies = [
+ "serde_derive",
+]
+
+[[package]]
+name = "serde_derive"
+version = "1.0.219"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5b0276cf7f2c73365f7157c8123c21cd9a50fbbd844757af28ca1f5925fc2a00"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "serde_json"
+version = "1.0.143"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d401abef1d108fbd9cbaebc3e46611f4b1021f714a0597a71f41ee463f5f4a5a"
+dependencies = [
+ "indexmap",
+ "itoa",
+ "memchr",
+ "ryu",
+ "serde",
+]
+
+[[package]]
+name = "shlex"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
+
+[[package]]
+name = "streaming-iterator"
+version = "0.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2b2231b7c3057d5e4ad0156fb3dc807d900806020c5ffa3ee6ff2c8c76fb8520"
+
+[[package]]
+name = "syn"
+version = "2.0.106"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ede7c438028d4436d71104916910f5bb611972c5cfd7f89b8300a8186e6fada6"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
+[[package]]
+name = "tcl_parser"
+version = "0.1.0"
+dependencies = [
+ "anyhow",
+ "serde",
+ "serde_json",
+ "tree-sitter",
+ "tree-sitter-tcl",
+]
+
+[[package]]
+name = "tree-sitter"
+version = "0.25.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6d7b8994f367f16e6fa14b5aebbcb350de5d7cbea82dc5b00ae997dd71680dd2"
+dependencies = [
+ "cc",
+ "regex",
+ "regex-syntax",
+ "serde_json",
+ "streaming-iterator",
+ "tree-sitter-language",
+]
+
+[[package]]
+name = "tree-sitter-language"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c4013970217383f67b18aef68f6fb2e8d409bc5755227092d32efb0422ba24b8"
+
+[[package]]
+name = "tree-sitter-tcl"
+version = "1.1.0"
+source = "git+https://github.com/tree-sitter-grammars/tree-sitter-tcl#8f11ac7206a54ed11210491cee1e0657e2962c47"
+dependencies = [
+ "cc",
+ "tree-sitter-language",
+]
+
+[[package]]
+name = "unicode-ident"
+version = "1.0.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5a5f39404a5da50712a4c1eecf25e90dd62b613502b7e925fd4e4d19b5c96512"

tcl_parser/Cargo.toml

@@ -0,0 +1,16 @@
+[package]
+name = "tcl_parser"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+tree-sitter = "0.25.8"
+tree-sitter-tcl = { git = "https://github.com/tree-sitter-grammars/tree-sitter-tcl" }
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+anyhow = "1.0"
+
+[lib]
+name = "tcl_parser"
+path = "src/lib.rs"
+

tcl_parser/src/lib.rs

@@ -0,0 +1,26 @@
+use tree_sitter::Parser;
+
+pub fn parse_to_sexp(src: &str) -> Result<String, anyhow::Error> {
+    let lang = tree_sitter_tcl::LANGUAGE;
+    let mut parser = Parser::new();
+    parser.set_language(&lang.into())?;
+    let tree = parser
+        .parse(src.as_bytes(), None)
+        .ok_or_else(|| anyhow::anyhow!("failed to parse input"))?;
+    Ok(tree.root_node().to_sexp())
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn parses_sample() {
+        let src = r#"proc ProcName {arg1 arg2 {arg3 3}} {
+    # Comment
+    set var1 100
+}"#;
+        let sexp = parse_to_sexp(src).expect("parse");
+        assert!(sexp.contains("proc"));
+    }
+}

tcl_parser/src/main.rs

@@ -0,0 +1,59 @@
+use std::io::{ self, BufRead };
+use serde::{ Deserialize, Serialize };
+
+fn main() -> anyhow::Result<()> {
+    println!(
+        "tcl_parser server starting (NDJSON stdin). Send JSON lines with {{'id':..., 'tcl': '...'}}"
+    );
+    let stdin = io::stdin();
+    for line in stdin.lock().lines() {
+        let line = line?;
+        if line.trim().is_empty() {
+            continue;
+        }
+        let req: Request = match serde_json::from_str(&line) {
+            Ok(r) => r,
+            Err(e) => {
+                let resp = Response::error(None, format!("invalid request json: {}", e));
+                println!("{}", serde_json::to_string(&resp)?);
+                continue;
+            }
+        };
+
+        let id = req.id.clone();
+        match tcl_parser::parse_to_sexp(&req.tcl) {
+            Ok(sexp) => {
+                let resp = Response::ok(id, sexp);
+                println!("{}", serde_json::to_string(&resp)?);
+            }
+            Err(e) => {
+                let resp = Response::error(id, format!("parse error: {}", e));
+                println!("{}", serde_json::to_string(&resp)?);
+            }
+        }
+    }
+    Ok(())
+}
+
+#[derive(Deserialize)]
+struct Request {
+    id: Option<String>,
+    tcl: String,
+}
+
+#[derive(Serialize)]
+struct Response {
+    id: Option<String>,
+    ok: bool,
+    result: Option<String>,
+    error: Option<String>,
+}
+
+impl Response {
+    fn ok(id: Option<String>, result: String) -> Self {
+        Self { id, ok: true, result: Some(result), error: None }
+    }
+    fn error(id: Option<String>, err: String) -> Self {
+        Self { id, ok: false, result: None, error: Some(err) }
+    }
+}