update

skillls/checker.py

@@ -0,0 +1,75 @@
+from dataclasses import dataclass
+from enum import Enum, auto
+
+from lsprotocol.types import Location, Position, Range
+
+from skillls.types import URI
+
+
+class SyntaxError(Exception):
+    pass
+
+
+class ParenMismatchErrorKind(Enum):
+    TooManyClosed = "Found too many closing parens"
+    TooManyOpened = "Found too many open parens"
+
+
+@dataclass
+class ParenMismatchError(SyntaxError):
+    kind: ParenMismatchErrorKind
+    loc: Range
+
+
+def _check_for_matching_parens(content: str) -> list[Exception]:
+    excs: list[Exception] = []
+
+    opened = 0
+    line = 0
+    col = 0
+    last_open: Position = Position(0, 0)
+    last_close: Position = Position(0, 0)
+    for char in content:
+        match char:
+            case "(":
+                opened += 1
+                last_open = Position(line, col)
+
+            case ")":
+                opened -= 1
+                if opened < 0:
+                    excs.append(
+                        ParenMismatchError(
+                            ParenMismatchErrorKind.TooManyClosed,
+                            Range(Position(line, col), Position(line, col + 1)),
+                        )
+                    )
+                    opened = 0
+                last_close = Position(line, col)
+            case "\n":
+                line += 1
+                col = -1
+
+            case _:
+                pass
+
+        col += 1
+
+    if opened > 0:
+        excs.append(
+            ParenMismatchError(
+                ParenMismatchErrorKind.TooManyOpened,
+                Range(last_open, Position(last_open.line, last_open.character + 1)),
+            )
+        )
+
+    return excs
+
+
+def check_content_for_errors(clean_content: str) -> None:
+    excs: list[Exception] = []
+
+    excs.extend(_check_for_matching_parens(clean_content))
+
+    if excs:
+        raise ExceptionGroup("", excs)