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310 lines (263 loc) · 10.1 KB
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import importlib
import subprocess
import sys
from copy import deepcopy
from pathlib import Path
from loguru import logger
from tree_sitter import Language, Parser, Query
from . import constants as cs
from . import exceptions as ex
from . import logs as ls
from .language_spec import LANGUAGE_SPECS, LanguageSpec
from .types_defs import LanguageImport, LanguageLoader, LanguageQueries
def _try_load_from_submodule(lang_name: cs.SupportedLanguage) -> LanguageLoader:
submodule_path = Path(cs.GRAMMARS_DIR) / f"{cs.TREE_SITTER_PREFIX}{lang_name}"
python_bindings_path = (
submodule_path / cs.BINDINGS_DIR / cs.SupportedLanguage.PYTHON
)
if not python_bindings_path.exists():
return None
python_bindings_str = str(python_bindings_path)
try:
if python_bindings_str not in sys.path:
sys.path.insert(0, python_bindings_str)
try:
module_name = f"{cs.TREE_SITTER_MODULE_PREFIX}{lang_name.replace('-', '_')}"
setup_py_path = submodule_path / cs.SETUP_PY
if setup_py_path.exists():
logger.debug(ls.BUILDING_BINDINGS.format(lang=lang_name))
result = subprocess.run(
[sys.executable, cs.SETUP_PY, cs.BUILD_EXT_CMD, cs.INPLACE_FLAG],
check=False,
cwd=str(submodule_path),
capture_output=True,
text=True,
)
if result.returncode != 0:
logger.debug(
ls.BUILD_FAILED.format(
lang=lang_name, stdout=result.stdout, stderr=result.stderr
)
)
return None
logger.debug(ls.BUILD_SUCCESS.format(lang=lang_name))
logger.debug(ls.IMPORTING_MODULE.format(module=module_name))
module = importlib.import_module(module_name)
language_attrs: list[str] = [
cs.QUERY_LANGUAGE,
f"{cs.LANG_ATTR_PREFIX}{lang_name}",
f"{cs.LANG_ATTR_PREFIX}{lang_name.replace('-', '_')}",
]
for attr_name in language_attrs:
if hasattr(module, attr_name):
logger.debug(
ls.LOADED_FROM_SUBMODULE.format(lang=lang_name, attr=attr_name)
)
loader: LanguageLoader = getattr(module, attr_name)
return loader
logger.debug(
ls.NO_LANG_ATTR.format(module=module_name, available=dir(module))
)
finally:
if python_bindings_str in sys.path:
sys.path.remove(python_bindings_str)
except Exception as e:
logger.debug(ls.SUBMODULE_LOAD_FAILED.format(lang=lang_name, error=e))
return None
def _try_import_language(
module_path: str, attr_name: str, lang_name: cs.SupportedLanguage
) -> LanguageLoader:
try:
module = importlib.import_module(module_path)
loader: LanguageLoader = getattr(module, attr_name)
return loader
except ImportError:
return _try_load_from_submodule(lang_name)
def _import_language_loaders() -> dict[cs.SupportedLanguage, LanguageLoader]:
language_imports: list[LanguageImport] = [
LanguageImport(
cs.SupportedLanguage.PYTHON,
cs.TreeSitterModule.PYTHON,
cs.QUERY_LANGUAGE,
cs.SupportedLanguage.PYTHON,
),
LanguageImport(
cs.SupportedLanguage.JS,
cs.TreeSitterModule.JS,
cs.QUERY_LANGUAGE,
cs.SupportedLanguage.JS,
),
LanguageImport(
cs.SupportedLanguage.TS,
cs.TreeSitterModule.TS,
cs.LANG_ATTR_TYPESCRIPT,
cs.SupportedLanguage.TS,
),
LanguageImport(
cs.SupportedLanguage.RUST,
cs.TreeSitterModule.RUST,
cs.QUERY_LANGUAGE,
cs.SupportedLanguage.RUST,
),
LanguageImport(
cs.SupportedLanguage.GO,
cs.TreeSitterModule.GO,
cs.QUERY_LANGUAGE,
cs.SupportedLanguage.GO,
),
LanguageImport(
cs.SupportedLanguage.SCALA,
cs.TreeSitterModule.SCALA,
cs.QUERY_LANGUAGE,
cs.SupportedLanguage.SCALA,
),
LanguageImport(
cs.SupportedLanguage.JAVA,
cs.TreeSitterModule.JAVA,
cs.QUERY_LANGUAGE,
cs.SupportedLanguage.JAVA,
),
LanguageImport(
cs.SupportedLanguage.CPP,
cs.TreeSitterModule.CPP,
cs.QUERY_LANGUAGE,
cs.SupportedLanguage.CPP,
),
LanguageImport(
cs.SupportedLanguage.LUA,
cs.TreeSitterModule.LUA,
cs.QUERY_LANGUAGE,
cs.SupportedLanguage.LUA,
),
LanguageImport(
cs.SupportedLanguage.CSS,
cs.TreeSitterModule.CSS,
cs.QUERY_LANGUAGE,
cs.SupportedLanguage.CSS,
),
LanguageImport(
cs.SupportedLanguage.HTML,
cs.TreeSitterModule.HTML,
cs.QUERY_LANGUAGE,
cs.SupportedLanguage.HTML,
),
LanguageImport(
cs.SupportedLanguage.SCSS,
cs.TreeSitterModule.CSS,
cs.QUERY_LANGUAGE,
cs.SupportedLanguage.SCSS,
),
]
loaders: dict[cs.SupportedLanguage, LanguageLoader] = {
lang_import.lang_key: _try_import_language(
lang_import.module_path,
lang_import.attr_name,
lang_import.submodule_name,
)
for lang_import in language_imports
}
for lang_key in LANGUAGE_SPECS:
lang_name = cs.SupportedLanguage(lang_key)
if lang_name not in loaders or loaders[lang_name] is None:
loaders[lang_name] = _try_load_from_submodule(lang_name)
return loaders
_language_loaders = _import_language_loaders()
LANGUAGE_LIBRARIES: dict[cs.SupportedLanguage, LanguageLoader] = _language_loaders
def _build_query_pattern(node_types: tuple[str, ...], capture_name: str) -> str:
return " ".join([f"({node_type}) @{capture_name}" for node_type in node_types])
def _get_locals_pattern(lang_name: cs.SupportedLanguage) -> str | None:
match lang_name:
case cs.SupportedLanguage.JS:
return cs.JS_LOCALS_PATTERN
case cs.SupportedLanguage.TS:
return cs.TS_LOCALS_PATTERN
case _:
return None
def _build_combined_import_pattern(lang_config: LanguageSpec) -> str:
import_patterns = _build_query_pattern(
lang_config.import_node_types, cs.CAPTURE_IMPORT
)
import_from_patterns = _build_query_pattern(
lang_config.import_from_node_types, cs.CAPTURE_IMPORT_FROM
)
all_patterns: list[str] = []
if import_patterns.strip():
all_patterns.append(import_patterns)
if import_from_patterns.strip() and import_from_patterns != import_patterns:
all_patterns.append(import_from_patterns)
return " ".join(all_patterns)
def _create_optional_query(language: Language, pattern: str | None) -> Query | None:
return Query(language, pattern) if pattern else None
def _create_locals_query(
language: Language, lang_name: cs.SupportedLanguage
) -> Query | None:
locals_pattern = _get_locals_pattern(lang_name)
if not locals_pattern:
return None
try:
return Query(language, locals_pattern)
except Exception as e:
logger.debug(ls.LOCALS_QUERY_FAILED.format(lang=lang_name, error=e))
return None
def _create_language_queries(
language: Language,
parser: Parser,
lang_config: LanguageSpec,
lang_name: cs.SupportedLanguage,
) -> LanguageQueries:
function_patterns = lang_config.function_query or _build_query_pattern(
lang_config.function_node_types, cs.CAPTURE_FUNCTION
)
class_patterns = lang_config.class_query or _build_query_pattern(
lang_config.class_node_types, cs.CAPTURE_CLASS
)
call_patterns = lang_config.call_query or _build_query_pattern(
lang_config.call_node_types, cs.CAPTURE_CALL
)
combined_import_patterns = _build_combined_import_pattern(lang_config)
return LanguageQueries(
functions=_create_optional_query(language, function_patterns),
classes=_create_optional_query(language, class_patterns),
calls=_create_optional_query(language, call_patterns),
imports=_create_optional_query(language, combined_import_patterns),
locals=_create_locals_query(language, lang_name),
config=lang_config,
language=language,
parser=parser,
)
def _process_language(
lang_name: cs.SupportedLanguage,
lang_config: LanguageSpec,
parsers: dict[cs.SupportedLanguage, Parser],
queries: dict[cs.SupportedLanguage, LanguageQueries],
) -> bool:
lang_lib = LANGUAGE_LIBRARIES.get(lang_name)
if not lang_lib:
logger.warning(ls.LIB_NOT_AVAILABLE.format(lang=lang_name))
return False
try:
language = Language(lang_lib())
parser = Parser(language)
parsers[lang_name] = parser
queries[lang_name] = _create_language_queries(
language, parser, lang_config, lang_name
)
logger.success(ls.GRAMMAR_LOADED.format(lang=lang_name))
return True
except Exception as e:
logger.warning(ls.GRAMMAR_LOAD_FAILED.format(lang=lang_name, error=e))
return False
def load_parsers() -> tuple[
dict[cs.SupportedLanguage, Parser], dict[cs.SupportedLanguage, LanguageQueries]
]:
parsers: dict[cs.SupportedLanguage, Parser] = {}
queries: dict[cs.SupportedLanguage, LanguageQueries] = {}
available_languages: list[cs.SupportedLanguage] = []
for lang_key, lang_config in deepcopy(LANGUAGE_SPECS).items():
lang_name = cs.SupportedLanguage(lang_key)
if _process_language(lang_name, lang_config, parsers, queries):
available_languages.append(lang_name)
if not available_languages:
raise RuntimeError(ex.NO_LANGUAGES)
logger.info(ls.INITIALIZED_PARSERS.format(languages=", ".join(available_languages)))
return parsers, queries