Type Providers for Tree Sitter
Create a type AST from any node-types.json file, as well as a generic visitor class and a transformer class, and a function to convert to the AST from the tree_sitter.Node type.
For example, the following code defines a module named tree_sitter_javascript from tree-sitter-javascript/src/nodes.json:
import pathlib
import tree_sitter_type_provider as tstp
node_types_json = pathlib.Path("tree-sitter-javascript/src/node-types.json")
node_types = tstp.NodeType.schema().loads(node_types_json.read_text(), many=True)
def as_class_name(node_type_name: str) -> str:
class_name_parts: typing.List[str] = ["Js"]
for part in node_type_name.split("_"):
class_name_parts.append(part.capitalize())
return "".join(class_name_parts)
sys.modules[__name__] = tstp.TreeSitterTypeProvider(
"tree_sitter_javascript",
node_types,
error_as_node=True, # Include ERROR as a node in the AST
as_class_name=as_class_name, # How to convert node types to Python class names
extra=["comment"], # Nodes which are marked as 'extra' in the grammar
)
The module contains a number of dataclasses which represent the AST nodes:
import tree_sitter as ts
import tree_sitter_type_provider as tstp
import typing
@dataclass
class JsArray(tstp.Node):
text: str
type_name: str
start_position: tstp.Point
end_position: tstp.Point
children: typing.List[typing.Union[JsExpression, JsSpreadElement]]
@dataclass
class JsDeclaration(tstp.Node):
text: str
type_name: str
start_position: tstp.Point
end_position: tstp.Point
@dataclass
class JsWhileStatement(tstp.Node):
text: str
type_name: str
start_position: tstp.Point
end_position: tstp.Point
body: JsStatement
condition: JsParenthesizedExpression
...
As well as a function to convert to the AST:
def from_tree_sitter(self, tsvalue: typing.Union[ts.Tree, ts.Node, ts.TreeCursor], *, encoding: str = 'utf-8') -> tstp.Node
1 maintainer
Metadata
1 maintainer
Release files for tree-sitter-type-provider 2.2.0
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| File | Size | Uploaded | Provenance | |
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|---|---|---|---|---|
| tree_sitter_type_provider-2.2.0-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 20.2 kB
Release files / tree_sitter_type_provider-2.2.0.tar.gz
| Download URL | tree_sitter_type_provider-2.2.0.tar.gz |
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| Size | 10.9 kB |
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| Download URL | tree_sitter_type_provider-2.2.0-py3-none-any.whl |
|---|---|
| Size | 9.3 kB |
| Tags | Python 3 |
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