Struct ToolCallParser 

pub struct ToolCallParser {
    pub schemas: HashMap<String, ToolSchema>,
}

Parses tool calls from LLM text and validates them against registered schemas.

Fields

schemas: HashMap<String, ToolSchema>

Registered schemas keyed by tool name.

Implementations

impl ToolCallParser

pub fn new() -> Self

Creates a new parser with no registered schemas.

pub fn register_tool(&mut self, schema: ToolSchema)

Registers a tool schema so calls to that tool can be validated.

pub fn parse_tool_calls(&self, text: &str) -> Vec<Result<ToolCall, ParseError>>

Finds all JSON tool-call objects in text and attempts to parse each.

Matches {"tool": "...", "arguments": {...}} patterns. Arguments are flattened to HashMap<String, String> by converting every value to its JSON string representation.

pub fn validate_call(&self, call: &ToolCall) -> Result<(), ParseError>

Validates a parsed ToolCall against registered schemas.

Returns Ok(()) if the tool is known and all required params are present.

pub fn extract_json_objects<'a>(&self, text: &'a str) -> Vec<&'a str>

Extracts all top-level balanced {…} blocks from text.

Handles nested braces correctly; does not cross string boundaries in a fully general way but is sufficient for typical LLM JSON output.

pub fn format_tool_result(tool_name: &str, result: &str) -> String

Formats a tool result in the expected XML-like envelope.

Trait Implementations

impl Default for ToolCallParser

fn default() -> Self

Returns the “default value” for a type.