feat: Migrate logic to tree sitter parser

flake.nix

@@ -30,7 +30,8 @@
           pyyaml
           jsonref
           referencing
-          more-itertools
+          tree-sitter
+          tree-sitter-yaml
         ];
       };
 

noxfile.py

@@ -44,7 +44,7 @@ def lint(session: nox.Session) -> None:
     )
     session.run("ruff", "check", "--fix", "src")
     session.run("ruff", "check", "--fix", "tests")
-    session.run("mypy", "src")
+    session.run("zuban", "mypy", "src")
 
 
 @nox.session()

pyproject.toml

@@ -14,14 +14,15 @@ keywords = [
 ]
 requires-python = ">=3.12"
 dependencies = [
-  "pygls>=1.1.0",
+  "pygls>=2.1.1",
   "lsprotocol>=2025.0.0",
-  "jsonschema>=4.23.0",
+  "jsonschema>=4.26.0",
   "pyyaml>=6.0.2",
   "referencing>=0.36.2",
   "jsonref>=1.1.0",
   "jsonpath-ng>=1.7.0",
-  "more-itertools>=10.7.0",
+  "tree-sitter>=0.25.2",
+  "tree-sitter-yaml>=0.7.2",
 ]
 classifiers = [
   "Development Status :: 3 - Alpha",
@@ -44,7 +45,7 @@ fmt = [
 ]
 lint = [
   "ruff >=0.15.12,<0.16.0",
-  "mypy >= 1.14.0",
+  "zuban >= 0.9.0",
   "types-pyyaml",
   "types-jsonschema",
 ]
@@ -94,15 +95,8 @@ known-first-party = ["craft_ls"]
 [tool.mypy]
 strict = true
 
-[[tool.mypy.overrides]]
-module = [
-  "jsonref",
-  "jsonpath_ng"
-]
-ignore_missing_imports = true
-
 [tool.pyright]
-enableReachabilityAnalysis = false  # unreliable
+enableReachabilityAnalysis = false # unreliable
 
 [tool.pytest]
 log_cli_level = "INFO"

src/craft_ls/cli.py

@@ -9,8 +9,11 @@
 
 from lsprotocol import types as lsp
 
-from craft_ls.core import get_diagnostics, get_validator_and_parse, segmentize_nodes
-from craft_ls.types_ import ParsedResult
+from craft_ls.core import (
+    get_diagnostics,
+    get_validator_from_tree,
+)
+from craft_ls.parser import parser, yaml_tree_to_dict
 
 logging.basicConfig()
 
@@ -19,15 +22,17 @@ def check(file_name: str) -> None:
     """Report all violations for a file."""
     file = Path(file_name)
 
-    diagnostics: list[lsp.Diagnostic] = []
-    match get_validator_and_parse(file.stem, file.read_text()):
-        case None:
-            print(f"Cannot validate '{file}'", file=sys.stderr)
-            pass
+    with file.open("rb") as f:
+        tree = parser.parse(f.read())
 
-        case validator, ParsedResult(instance=instance, nodes=nodes):
-            segments = segmentize_nodes(nodes)
-            diagnostics.extend(get_diagnostics(validator, instance, dict(segments)))
+    validator = get_validator_from_tree(file.stem, tree)
+    instance = yaml_tree_to_dict(tree)
+
+    if not validator:
+        print(f"Cannot validate '{file}'", file=sys.stderr)
+        sys.exit(1)
+
+    diagnostics: list[lsp.Diagnostic] = get_diagnostics(tree, validator, instance)
 
     if diagnostics:
         for diag in diagnostics: