Fix editor live validation (#6431)

esphome/config.py

@@ -1,10 +1,11 @@
+from __future__ import annotations
 import abc
 import functools
 import heapq
 import logging
 import re
 
-from typing import Optional, Union
+from typing import Union, Any
 
 from contextlib import contextmanager
 import contextvars
@@ -76,7 +77,7 @@ def _path_begins_with(path: ConfigPath, other: ConfigPath) -> bool:
 
 @functools.total_ordering
 class _ValidationStepTask:
-    def __init__(self, priority: float, id_number: int, step: "ConfigValidationStep"):
+    def __init__(self, priority: float, id_number: int, step: ConfigValidationStep):
         self.priority = priority
         self.id_number = id_number
         self.step = step
@@ -130,7 +131,7 @@ class Config(OrderedDict, fv.FinalValidateConfig):
             )
         self.errors.append(error)
 
-    def add_validation_step(self, step: "ConfigValidationStep"):
+    def add_validation_step(self, step: ConfigValidationStep):
         id_num = self._validation_tasks_id
         self._validation_tasks_id += 1
         heapq.heappush(
@@ -172,7 +173,7 @@ class Config(OrderedDict, fv.FinalValidateConfig):
             conf = conf[key]
         conf[path[-1]] = value
 
-    def get_error_for_path(self, path: ConfigPath) -> Optional[vol.Invalid]:
+    def get_error_for_path(self, path: ConfigPath) -> vol.Invalid | None:
         for err in self.errors:
             if self.get_deepest_path(err.path) == path:
                 self.errors.remove(err)
@@ -181,7 +182,7 @@ class Config(OrderedDict, fv.FinalValidateConfig):
 
     def get_deepest_document_range_for_path(
         self, path: ConfigPath, get_key: bool = False
-    ) -> Optional[ESPHomeDataBase]:
+    ) -> ESPHomeDataBase | None:
         data = self
         doc_range = None
         for index, path_item in enumerate(path):
@@ -733,7 +734,9 @@ class PinUseValidationCheck(ConfigValidationStep):
         pins.PIN_SCHEMA_REGISTRY.final_validate(result)
 
 
-def validate_config(config, command_line_substitutions) -> Config:
+def validate_config(
+    config: dict[str, Any], command_line_substitutions: dict[str, Any]
+) -> Config:
     result = Config()
 
     loader.clear_component_meta_finders()
@@ -897,24 +900,23 @@ class InvalidYAMLError(EsphomeError):
         self.base_exc = base_exc
 
 
-def _load_config(command_line_substitutions):
+def _load_config(command_line_substitutions: dict[str, Any]) -> Config:
+    """Load the configuration file."""
     try:
         config = yaml_util.load_yaml(CORE.config_path)
     except EsphomeError as e:
         raise InvalidYAMLError(e) from e
 
     try:
-        result = validate_config(config, command_line_substitutions)
+        return validate_config(config, command_line_substitutions)
     except EsphomeError:
         raise
     except Exception:
         _LOGGER.error("Unexpected exception while reading configuration:")
         raise
 
-    return result
 
-
-def load_config(command_line_substitutions):
+def load_config(command_line_substitutions: dict[str, Any]) -> Config:
     try:
         return _load_config(command_line_substitutions)
     except vol.Invalid as err:

esphome/config_helpers.py

@@ -1,9 +1,4 @@
-import json
-import os
-
 from esphome.const import CONF_ID
-from esphome.core import CORE
-from esphome.helpers import read_file
 
 
 class Extend:
@@ -38,25 +33,6 @@ class Remove:
         return isinstance(b, Remove) and self.value == b.value
 
 
-def read_config_file(path: str) -> str:
-    if CORE.vscode and (
-        not CORE.ace or os.path.abspath(path) == os.path.abspath(CORE.config_path)
-    ):
-        print(
-            json.dumps(
-                {
-                    "type": "read_file",
-                    "path": path,
-                }
-            )
-        )
-        data = json.loads(input())
-        assert data["type"] == "file_response"
-        return data["content"]
-
-    return read_file(path)
-
-
 def merge_config(full_old, full_new):
     def merge(old, new):
         if isinstance(new, dict):

esphome/vscode.py

@@ -1,20 +1,22 @@
+from __future__ import annotations
 import json
 import os
+from io import StringIO
+from typing import Any
 
-from typing import Optional
-
-from esphome.config import load_config, _format_vol_invalid, Config
+from esphome.yaml_util import parse_yaml
+from esphome.config import validate_config, _format_vol_invalid, Config
 from esphome.core import CORE, DocumentRange
 import esphome.config_validation as cv
 
 
-def _get_invalid_range(res: Config, invalid: cv.Invalid) -> Optional[DocumentRange]:
+def _get_invalid_range(res: Config, invalid: cv.Invalid) -> DocumentRange | None:
     return res.get_deepest_document_range_for_path(
         invalid.path, invalid.error_message == "extra keys not allowed"
     )
 
 
-def _dump_range(range: Optional[DocumentRange]) -> Optional[dict]:
+def _dump_range(range: DocumentRange | None) -> dict | None:
     if range is None:
         return None
     return {
@@ -56,6 +58,25 @@ class VSCodeResult:
         )
 
 
+def _read_file_content_from_json_on_stdin() -> str:
+    """Read the content of a json encoded file from stdin."""
+    data = json.loads(input())
+    assert data["type"] == "file_response"
+    return data["content"]
+
+
+def _print_file_read_event(path: str) -> None:
+    """Print a file read event."""
+    print(
+        json.dumps(
+            {
+                "type": "read_file",
+                "path": path,
+            }
+        )
+    )
+
+
 def read_config(args):
     while True:
         CORE.reset()
@@ -68,9 +89,17 @@ def read_config(args):
             CORE.config_path = os.path.join(args.configuration, f)
         else:
             CORE.config_path = data["file"]
+
+        file_name = CORE.config_path
+        _print_file_read_event(file_name)
+        raw_yaml = _read_file_content_from_json_on_stdin()
+        command_line_substitutions: dict[str, Any] = (
+            dict(args.substitution) if args.substitution else {}
+        )
         vs = VSCodeResult()
         try:
-            res = load_config(dict(args.substitution) if args.substitution else {})
+            config = parse_yaml(file_name, StringIO(raw_yaml))
+            res = validate_config(config, command_line_substitutions)
         except Exception as err:  # pylint: disable=broad-except
             vs.add_yaml_error(str(err))
         else:

esphome/yaml_util.py

@@ -417,20 +417,25 @@ def load_yaml(fname: str, clear_secrets: bool = True) -> Any:
     return _load_yaml_internal(fname)
 
 
-def _load_yaml_internal(fname: str) -> Any:
-    """Load a YAML file."""
+def parse_yaml(file_name: str, file_handle: TextIOWrapper) -> Any:
+    """Parse a YAML file."""
     try:
-        with open(fname, encoding="utf-8") as f_handle:
-            try:
-                return _load_yaml_internal_with_type(ESPHomeLoader, fname, f_handle)
+        return _load_yaml_internal_with_type(ESPHomeLoader, file_name, file_handle)
     except EsphomeError:
         # Loading failed, so we now load with the Python loader which has more
         # readable exceptions
         # Rewind the stream so we can try again
-                f_handle.seek(0, 0)
+        file_handle.seek(0, 0)
         return _load_yaml_internal_with_type(
-                    ESPHomePurePythonLoader, fname, f_handle
+            ESPHomePurePythonLoader, file_name, file_handle
         )
+
+
+def _load_yaml_internal(fname: str) -> Any:
+    """Load a YAML file."""
+    try:
+        with open(fname, encoding="utf-8") as f_handle:
+            return parse_yaml(fname, f_handle)
     except (UnicodeDecodeError, OSError) as err:
         raise EsphomeError(f"Error reading file {fname}: {err}") from err