Function

Abstract representation of a Function. Attributes: return_type: the return type annotation of the function

Inherits from

HasBlock, Callable, Symbol, Editable, Expression, Usable, Importable, HasName

Properties

---

call_sites

Returns all call sites (invocations) of this callable in the codebase.

Finds all locations in the codebase where this callable is invoked/called. Call sites exclude imports, certain exports, and external references.

Returns: list[FunctionCall]: A list of FunctionCall objects representing each invocation of this callable. Returns empty list if the callable has no name.

def call_sites(self) -> list[FunctionCall]:
    ...

comment

Returns the comment group associated with the symbol, if any.

Returns: CommentGroup | None: The comment group containing all comments associated with the symbol if it exists, None otherwise.

def comment(self) -> CommentGroup | None:
    ...

decorators

Returns list of all decorators on this Symbol.

Gets all decorators associated with a code entity (function, class, method).

Returns: list[TDecorator]: A list of Decorator objects. Empty list if no decorators are present.

def decorators(self) -> list[TDecorator]:
    ...

dependencies

Returns a list of symbols that this symbol depends on.

Returns a list of symbols (including imports) that this symbol directly depends on. The returned list is sorted by file location for consistent ordering.

Returns: list[Union[Symbol, Import]]: A list of symbols and imports that this symbol directly depends on, sorted by file location.

def dependencies(self) -> list[Union["Symbol", "Import"]]:
    ...

docstring

Retrieves the docstring of the expression.

Gets the docstring associated with this code object (e.g., function, class) as a CommentGroup. If no docstring exists, returns None.

Returns: CommentGroup | None: The docstring as a CommentGroup if it exists, None otherwise.

def docstring(self) -> CommentGroup | None:
    ...

extended

Returns a SymbolGroup of all extended nodes associated with this element.

Creates a SymbolGroup that provides a common interface for editing all extended nodes, such as decorators, modifiers, and comments associated with the element.

Args: None

Returns: SymbolGroup: A group containing this node and its extended nodes that allows batch modification through a common interface.

def extended(self) -> SymbolGroup:
    ...

extended_nodes

Returns a list of Editable nodes associated with this symbol, including extended symbols.

Extended symbols include export, public, decorator, comments, and inline comments.

Args: self: The symbol instance.

Returns: list[Editable]: A list of Editable nodes containing the current symbol and its extended symbols, sorted in the correct order.

def extended_nodes(self) -> list[Editable]:
    ...

extended_source

Returns the source text representation of all extended nodes.

Gets the source text of all extended nodes combined. This property allows reading the source text of all extended nodes (e.g. decorators, export statements) associated with this node.

Returns: str: The combined source text of all extended nodes.

def extended_source(self) -> str:
    ...

file

The file object that this Editable instance belongs to.

Retrieves or caches the file object associated with this Editable instance.

Returns: File: The File object containing this Editable instance.

def file(self) -> SourceFile:
    ...

filepath

The file path of the file that this Editable instance belongs to.

Returns a string representing the absolute file path of the File that contains this Editable instance.

Returns: str: The absolute file path.

def filepath(self) -> str:
    ...

full_name

Returns the full name of the object, including the namespace path.

Returns the complete qualified name of an object, including any parent class or namespace paths. For class methods, this returns the parent class’s full name followed by the method name. For chained attributes (e.g., ‘a.b’), this returns the full chained name.

Args: None

Returns: str | None: The complete qualified name of the object. Returns None if no name is available. For class methods, returns ‘ParentClass.method_name’. For chained attributes, returns the full chain (e.g., ‘a.b’). For simple names, returns just the name.

def full_name(self) -> str | None:
    ...

function_calls

Gets all function calls within the function and its parameters.

Retrieves all function calls that appear within this function’s body and within its parameter declarations, sorted by position in the file.

Args: None

Returns: list[FunctionCall]: A sorted list of all function calls within the function and its parameters. Function calls may appear multiple times in the list.

def function_calls(self) -> list[FunctionCall]:
    ...

function_signature

Returns the signature of the function as a string.

A property that returns the complete function signature including its declaration, parameters, and return type annotation. The signature format varies based on the language, but follows the standard syntax for function declarations in that language.

Returns: str: A string representation of the function’s complete signature.

def function_signature(self) -> str:
    ...

inferred_return_type

Gets the inferred type of the function from the language’s native language engine / compiler.

Only enabled for specific languages that support native type inference.

def inferred_return_type(self) -> str | None:
    ...

inline_comment

Returns the inline comment group associated with the symbol, if any.

Returns: CommentGroup | None: The inline comment group object associated with the symbol, or None if no inline comment exists.

def inline_comment(self) -> CommentGroup | None:
    ...

is_async

Returns True if the function is asynchronous.

A property that determines whether the function has been defined with the ‘async’ keyword.

Returns: bool: True if the function is asynchronous, False otherwise.

def is_async(self) -> bool:
    ...

is_constructor

Determines if the current function is a constructor method.

A constructor method is a special method associated with a class. This property checks if the function is both a class method and has a name that matches the class’s constructor keyword.

Returns: bool: True if the function is a constructor method of a class, False otherwise.

def is_constructor(self) -> bool:
    ...

is_decorated

Returns whether the symbol has any decorators.

A helper method that checks if this symbol (a function, class, or method) has any decorators applied to it. This method is used to determine if code analysis or transformations should be applied based on the presence of decorators.

Returns: bool: True if the symbol has one or more decorators, False otherwise.

def is_decorated(self) -> bool:
    ...

is_magic

Returns True if function is a magic method.

Determines if the function is a magic method based on Python’s double underscore naming convention. A magic method in Python is a special method surrounded by double underscores (e.g., init, str).

Returns: bool: True if the function is a magic method, False otherwise.

def is_magic(self) -> bool:
    ...

is_method

Returns whether the function is a method of a class.

Determines if this function is defined within a class context. It checks if the parent of the function is a Class.

Returns: bool: True if the function is a method within a class, False otherwise.

def is_method(self) -> bool:
    ...

is_overload

Indicates whether the function is an overloaded function in a multi-function definition.

Determines if this function is part of a function overload group in the codebase. This property helps identify functions that have multiple implementations with different parameter types.

Returns: bool: False, as this base implementation does not support overloads.

def is_overload(self) -> bool:
    ...

is_private

Determines if a function has a private access modifier.

A function is considered private if it starts with an underscore (_) in Python, or has a private keyword in other languages.

Returns: bool: True if the function has a private access modifier, False otherwise.

def is_private(self) -> bool:
    ...

is_property

Returns whether this function is a property.

Determines if the function has been decorated with @property decorator.

Returns: bool: True if the function is a property, False otherwise.

def is_property(self) -> bool:
    ...

name

Retrieves the name of the object excluding any namespace prefixes.

Returns the “base” name of the object without any namespace or module prefix. For instance, for an object ‘a.b’, this method returns ‘b’.

Returns: str | None: The base name of the object as a string, or None if there is no associated name node.

def name(self) -> str | None:
    ...

nested_functions

Returns a list of nested functions defined within this function’s code block.

Retrieves all functions that are defined within the current function’s body. The functions are sorted by their position in the file.

Returns: list[TFunction]: A list of Function objects representing nested functions within this function’s body, sorted by position in the file.

def nested_functions(self) -> list[TFunction]:
    ...

parameters

Retrieves all parameters of a callable symbol.

This property provides access to all parameters of a callable symbol (function, class, decorator, or external module). Parameters are stored as a SymbolGroup containing Parameter objects.

Returns: SymbolGroup[TParameter, Self] | None: A group of Parameter objects representing the callable’s parameters, or None if the callable has no parameters.

def parameters(self) -> SymbolGroup[TParameter, Self] | None:
    ...

resolved_value

Returns the resolved value of an Expression.

Returns the last assigned expression value if the expression is resolvable, otherwise returns itself. For example, if ‘b = a’ where ‘a = 1’, resolving ‘b’ returns 1.

Returns: Union[Expression, list[Expression]]: The resolved expression value(s). Returns a single Expression if there is only one resolved value, or a list of Expressions if there are multiple resolved values. Returns self if the expression is not resolvable or has no resolved types.

def resolved_value(self) -> Expression | list[Expression]:
    ...

return_statements

Returns a list of all return statements within this function’s body.

Provides access to return statements in the function’s code block, which is useful for analyzing return patterns, identifying early returns, and examining return types.

Args: None

Returns: list[ReturnStatement]: A list of all return statements found within the function’s body.

def return_statements(self) -> list[ReturnStatement]:
    ...

source

Returns the source code of the symbol.

Gets the source code of the symbol from its extended representation, which includes any comments, docstrings, access identifiers, or decorators.

Returns: str: The complete source code of the symbol including any extended nodes.

def source(self) -> str:
    ...

variable_usages

Returns Editables for all TreeSitter node instances of variable usages within this node’s scope.

This method finds all variable identifier nodes in the TreeSitter AST, excluding:

• Function names in function calls
• Import names in import statements
• Property access identifiers (except the base object)
• Keyword argument names (in Python and TypeScript)

This is useful for variable renaming and usage analysis within a scope.

Returns: list[Editable]: A list of Editable nodes representing variable usages. Each Editable corresponds to a TreeSitter node instance where the variable is referenced.

def variable_usages(self) -> list[Editable]:
    ...

Attributes

---

parent_statement

Returns the parent statement that contains this expression

parent_statement: Statement | None

return_type

the return type annotation of the function

return_type: TType | Placeholder[Self]

Methods

---

add_comment

Adds a comment to the symbol.

Adds a comment to the top of a symbol. If a comment group already exists, the new comment will be appended to the existing comment group. If no comment group exists, a new comment group will be created.

Args: comment (str): The comment text to add.

Returns: None

def add_comment(self, comment: str) -> None:
    ...

add_decorator

Adds a decorator to a function or method.

Adds a new decorator to the symbol’s definition. The decorator is inserted before the first non-comment extended node with proper indentation.

Args: new_decorator (str): The decorator to add. Should be a complete decorator string including the ’@’ symbol. skip_if_exists (bool, optional): If True, will not add the decorator if it already exists. Defaults to False.

Returns: bool: True if the decorator was added, False if skipped due to existing decorator.

def add_decorator(self, new_decorator: str, skip_if_exists: bool = False) -> bool:
    ...

add_keyword

Insert a keyword in the appropriate place before this symbol if it doesn’t already exist.

This method adds a keyword (e.g., ‘public’, ‘async’, ‘static’) in the syntactically appropriate position relative to other keywords. If the keyword already exists, no action is taken.

Args: keyword (str): The keyword to be inserted. Must be a valid keyword in the language context.

Raises: AssertionError: If the provided keyword is not in the language’s valid keywords list.

def add_keyword(self, keyword: str):
    ...

add_statements

Adds statements to the end of a function body.

Adds the provided lines of code to the end of the function’s code block. The method handles proper indentation automatically.

Args: lines (str): The lines of code to be added at the end of the function body.

Returns: None

def add_statements(self, lines: str) -> None:
    ...

asyncify

Modifies the function to be asynchronous.

Converts a synchronous function to be asynchronous by adding the ‘async’ keyword to its definition if it is not already marked as asynchronous.

Returns: None

Note: This method has no effect if the function is already asynchronous.

def asyncify(self) -> None:
    ...

call_graph_successors

Returns all function call definitions that are reachable from this callable.

Analyzes the callable’s implementation to find all function calls and their corresponding definitions. For classes, if a constructor exists, returns the call graph successors of the constructor; otherwise returns an empty list.

Args: include_classes (bool): If True, includes class definitions in the results. Defaults to True. include_external (bool): If True, includes external module definitions in the results. Defaults to True.

Returns: list[FunctionCallDefinition]: A list of FunctionCallDefinition objects, each containing a function call and its possible callable definitions (Functions, Classes, or ExternalModules based on include flags). Returns empty list for non-block symbols or classes without constructors.

def call_graph_successors(
        self,
        *,
        include_classes: bool = True,
        include_external: bool = True,
    ) -> list[FunctionCallDefinition]:
    ...

commit

Commits any pending transactions for the current node to the codebase.

Commits only the transactions that affect the file this node belongs to. This is useful when you want to commit changes made to a specific node without committing all pending transactions in the codebase.

Args: None

Returns: None

def commit(self) -> None:
    ...

edit

Replace the source of this node with new_src.

Edits the source code of this node by replacing it with the provided new source code. If specified, the indentation of the new source can be adjusted to match the current text’s indentation.

Args: new_src (str): The new source code to replace the current source with. fix_indentation (bool): If True, adjusts the indentation of new_src to match the current text’s indentation. Defaults to False. priority (int): The priority of this edit. Higher priority edits take precedence. Defaults to 0. dedupe (bool): If True, prevents duplicate edits. Defaults to True.

Returns: None

def edit(self, new_src: str, fix_indentation: bool = False, priority: int = 0, dedupe: bool = True) -> None:
    ...

find

Find and return matching nodes or substrings within an Editable instance.

This method searches through the extended_nodes of the Editable instance and returns all nodes or substrings that match the given search criteria.

Args: strings_to_match (Union[list[str], str]): One or more strings to search for. exact (bool): If True, only return nodes whose source exactly matches one of the strings_to_match. If False, return nodes that contain any of the strings_to_match as substrings. Defaults to False.

Returns: list[Editable]: A list of Editable instances that match the search criteria.

def find(self, strings_to_match: list[str] | str, *, exact: bool = False) -> list[Editable]:
    ...

find_string_literals

Returns a list of string literals within this node’s source that match any of the given strings.

Args: strings_to_match (list[str]): A list of strings to search for in string literals. fuzzy_match (bool): If True, matches substrings within string literals. If False, only matches exact strings. Defaults to False.

Returns: list[Editable]: A list of Editable objects representing the matching string literals.

def find_string_literals(self, strings_to_match: list[str], fuzzy_match: bool = False) -> list[Editable]:
    ...

flag

Adds a visual flag comment to the end of this Editable’s source text.

Flags this Editable by appending a comment with emoji flags at the end of its source text. This is useful for visually highlighting specific nodes in the source code during development and debugging.

Returns: None

def flag(self, **kwargs: Unpack[FlagKwargs]) -> CodeFlag[Self]:
    ...

get_name

Returns the Name node of the object.

Retrieves the name node of the object which can be used for modification operations.

Returns: Name | ChainedAttribute | None: The name node of the object. Can be a Name node for simple names, a ChainedAttribute for names with namespaces (e.g., a.b), or None if the object has no name.

def get_name(self) -> Name | ChainedAttribute | None:
    ...

get_parameter

Gets a specific parameter from the callable’s parameters list by name.

Args: name (str): The name of the parameter to retrieve.

Returns: TParameter | None: The parameter with the specified name, or None if no parameter with that name exists or if there are no parameters.

def get_parameter(self, name: str) -> TParameter | None:
    ...

get_parameter_by_index

Returns the parameter at the given index.

Retrieves a parameter from the callable’s parameter list based on its positional index.

Args: index (int): The index of the parameter to retrieve.

Returns: TParameter | None: The parameter at the specified index, or None if the parameter list is empty or the index does not exist.

def get_parameter_by_index(self, index: int) -> TParameter | None:
    ...

get_parameter_by_type

Retrieves a parameter from the callable by its type.

Searches through the callable’s parameters to find a parameter with the specified type.

Args: type (Symbol): The type to search for.

Returns: TParameter | None: The parameter with the specified type, or None if no parameter is found or if the callable has no parameters.

def get_parameter_by_type(self, type: "Symbol") -> TParameter | None:
    ...

get_variable_usages

Returns Editables for all TreeSitter nodes corresponding to instances of variable usage that matches the given variable name.

Retrieves a list of variable usages that match a specified name, with an option for fuzzy matching. By default, excludes property identifiers and argument keywords.

Args: var_name (str): The variable name to search for. fuzzy_match (bool): If True, matches variables where var_name is a substring. If False, requires exact match. Defaults to False.

Returns: list[Editable]: List of Editable objects representing variable usage nodes matching the given name.

def get_variable_usages(self, var_name: str, fuzzy_match: bool = False) -> list[Editable]:
    ...

insert_after

Inserts code after this node.

Args: new_src (str): The source code to insert after this node. fix_indentation (bool, optional): Whether to adjust the indentation of new_src to match the current node. Defaults to False. newline (bool, optional): Whether to add a newline before the new_src. Defaults to True. priority (int, optional): Priority of the insertion transaction. Defaults to 0. dedupe (bool, optional): Whether to deduplicate identical transactions. Defaults to True.

Returns: None

def insert_after(self, new_src: str, fix_indentation: bool = False, newline: bool = True, priority: int = 0, dedupe: bool = True) -> None:
    ...

insert_before

Inserts text before the current symbol node in the Abstract Syntax Tree.

Handles insertion of new source code before a symbol, with special handling for extended nodes like comments and decorators. The insertion can be done either before the symbol itself or before its extended nodes.

Args: new_src (str): The source code text to insert. fix_indentation (bool): Whether to adjust the indentation of new_src to match current text. Defaults to False. newline (bool): Whether to add a newline after insertion. Defaults to True. priority (int): Priority of this edit operation. Higher priority edits are applied first. Defaults to 0. dedupe (bool): Whether to remove duplicate insertions. Defaults to True. extended (bool): Whether to insert before extended nodes like comments and decorators. Defaults to True.

Returns: None

def insert_before(self, new_src: str, fix_indentation: bool = False, newline: bool = True, priority: int = 0, dedupe: bool = True, extended: bool = True) -> None:
    ...

insert_statements

Inserts lines of code into the function body at the specified index.

Adds the provided lines as statements within the function’s body at the given position. If index is 0, the lines will be prepended at the start of the function body.

Args: lines (str): The code lines to insert into the function body. index (int, optional): The position in the function body where the lines should be inserted. Defaults to 0.

Raises: ValueError: If the provided index is out of range for the function’s statements.

def insert_statements(self, lines: str, index: int = 0):
    ...

move_to_file

Moves the given symbol to a new file and updates its imports and references.

This method moves a symbol to a new file and updates all references to that symbol throughout the codebase. The way imports are handled can be controlled via the strategy parameter.

Args: file (SourceFile): The destination file to move the symbol to. include_dependencies (bool): If True, moves all dependencies of the symbol to the new file. If False, adds imports for the dependencies. Defaults to True. strategy (str): The strategy to use for updating imports. Can be either ‘add_back_edge’ or ‘update_all_imports’. Defaults to ‘update_all_imports’.

• ‘add_back_edge’: Moves the symbol and adds an import in the original file
• ’update_all_imports’: Updates all imports and usages of the symbol to reference the new file

Returns: None

Raises: AssertionError: If an invalid strategy is provided.

def move_to_file(self, file: SourceFile, include_dependencies: bool = True, strategy: str = "update_all_imports") -> None:
    ...

prepend_statements

Prepends the provided code to the beginning of the function body.

Args: lines (str): The code to be prepended to the function body.

Returns: None

Note: This method handles indentation automatically to maintain proper code formatting.

def prepend_statements(self, lines: str) -> None:
    ...

reduce_condition

Reduces an editable to the following condition

def reduce_condition(self, bool_condition: bool, node: Editable | None = None) -> None:
    ...

remove

Deletes this Node and its related extended nodes (e.g. decorators, comments).

Removes the current node and its extended nodes (e.g. decorators, comments) from the codebase. After removing the node, it handles cleanup of any surrounding formatting based on the context.

Args: delete_formatting (bool): Whether to delete surrounding whitespace and formatting. Defaults to True. priority (int): Priority of the removal transaction. Higher priority transactions are executed first. Defaults to 0. dedupe (bool): Whether to deduplicate removal transactions at the same location. Defaults to True.

Returns: None

def remove(self, delete_formatting: bool = True, priority: int = 0, dedupe: bool = True) -> None:
    ...

rename

Renames the symbol and all its references in the codebase.

Renames a symbol to a new name and updates all references to that symbol throughout the codebase, including imports and call sites.

Args: new_name (str): The new name for the symbol. priority (int): Priority of the edit operation. Defaults to 0.

Returns: tuple[NodeId, NodeId]: A tuple containing the file node ID and the new node ID of the renamed symbol.

def rename(self, new_name: str, priority: int = 0):
    ...

rename_local_variable

Renames a local variable and all its usages within a function body.

The method searches for matches of the old variable name within the function’s code block and replaces them with the new variable name. It excludes parameter names from being renamed.

Args: old_var_name (str): The current name of the local variable to be renamed. new_var_name (str): The new name to give to the local variable. fuzzy_match (bool, optional): If True, matches variable names that contain old_var_name. Defaults to False.

Returns: None: The method modifies the AST in place.

def rename_local_variable(self, old_var_name: str, new_var_name: str, fuzzy_match: bool = False) -> None:
    ...

replace

Search and replace occurrences of text within this node’s source and its extended nodes.

This method performs string replacement similar to Python’s string.replace(), with support for regex patterns. It operates on both the main node and any extended nodes (e.g. decorators, exports).

Args: old (str): The text or pattern to search for. new (str): The text to replace matches with. count (int, optional): Maximum number of replacements to make. Defaults to -1 (replace all). is_regex (bool, optional): Whether to treat ‘old’ as a regex pattern. Defaults to False. priority (int, optional): Priority of the replacement operation. Defaults to 0.

Returns: int: The total number of replacements made.

Raises: ValueError: If there are multiple occurrences of the substring in a node’s source.

def replace(self, old: str, new: str, count: int = -1, is_regex: bool = False, priority: int = 0) -> int:
    ...

search

Returns a list of all regex match of regex_pattern, similar to python’s re.search().

Searches for matches of a regular expression pattern within the text of this node and its extended nodes.

Args: regex_pattern (str): The regular expression pattern to search for. include_strings (bool): When False, excludes the contents of string literals from the search. Defaults to True. include_comments (bool): When False, excludes the contents of comments from the search. Defaults to True.

Returns: list[Editable]: A list of Editable objects corresponding to the matches found.

def search(self, regex_pattern: str, include_strings: bool = True, include_comments: bool = True) -> list[Editable]:
    ...

set_comment

Sets a comment to the symbol.

Updates or creates a comment for the symbol. If a comment already exists, it will be overridden. If no comment exists, a new comment group will be created.

Args: comment (str): The comment text to set.

Returns: None

def set_comment(self, comment: str) -> None:
    ...

set_docstring

Sets or updates the docstring for the current entity.

Modifies the entity’s docstring by either replacing an existing one or creating a new one.

Args: docstring (str): The new docstring content to set.

Returns: None: This method doesn’t return anything.

def set_docstring(self, docstring: str) -> None:
    ...

set_inline_comment

Sets an inline comment to the symbol.

Adds or updates an inline comment for the symbol with the provided text. If an inline comment already exists, it will be overridden. If no inline comment exists, a new inline comment will be created.

Args: comment (str): The text of the inline comment to be added or updated.

Returns: None

def set_inline_comment(self, comment: str) -> None:
    ...

set_name

Sets the name of a code element.

Modifies the name of the object’s underlying name node. Works with both simple names and chained attributes (e.g., ‘a.b’).

Args: name (str): The new name to set for the object.

Returns: None

def set_name(self, name: str) -> None:
    ...

set_return_type

Sets the return type annotation for the function.

Sets or updates the return type annotation of the function. If an empty string is provided, the return type annotation will be removed.

Args: new_return_type (str): The new return type annotation to be set. Use an empty string to remove the return type annotation.

Returns: None

def set_return_type(self, new_return_type: str) -> None:
    ...

symbol_usages

Returns a list of symbols that use the exportable object or import it. Returns symbols that use this exportable object, including imports that import this exportable object. By default, returns all usages. This shows where this symbol is imported, but not where it is subsequently used.

Args: usage_types: The types of usages to search for. Defaults to any.

• DIRECT: Direct uses of the symbol
• CHAINED: Uses through method/attribute chains
• INDIRECT: Uses through renamed imports
• ALIASED: Uses through aliases

Returns: list[Import | Symbol | Export]: A list of symbols that use this exportable object, including imports that import it.

Note: This method can be called as both a property or a method. If used as a property, it is equivalent to invoking it without arguments.

def symbol_usages(self, usage_types: UsageType | None = None) -> list[Import | Symbol | Export]:
    ...

usages

Returns a list of usages of the exportable object.

Retrieves a list of all locations where the exportable object is used in the codebase. By default, returns all usages, such as imports or references within the same file.

Args: usage_types: Specifies which types of usages to include in the results. Default is any usages. (graph_sitter.core.dataclasses.usage.UsageType)

Returns: list[Usage]: A sorted list of Usage objects representing where this exportable is used, ordered by source location in reverse.

Raises: ValueError: If no usage types are specified or if only ALIASED and DIRECT types are specified together.

Note: This method can be called as both a property or a method. If used as a property, it is equivalent to invoking it without arguments.

def usages(self, usage_types: UsageType | None = None) -> list[Usage]:
    ...