Function parse_invocation

src/tool_command/args.rs:40–59

Parse CLI args against the tool's JSON Schema. Returns the JSON object to hand to the handler, plus side-effects from reserved flags.

(def: &ToolDefinition, args: &[String])

/// Parse CLI args against the tool's JSON Schema. Returns the JSON object to
/// hand to the handler, plus side-effects from reserved flags.
pub(crate) fn parse_invocation(def: &ToolDefinition, args: &[String]) -> Result<ParsedInvocation> {
    // stdin is a single-shot stream: memoize the first read so that referencing
    // it more than once in one invocation (e.g. `--field-a @- --field-b @-`)
    // yields the piped payload each time instead of silently emptying after the
    // first `read_to_string`.
    let mut cached: Option<String> = None;
    parse_invocation_with_stdin(def, args, || {
        if let Some(cached) = &cached {
            return Ok(cached.clone());
        }
        let mut input = String::new();
        std::io::stdin()
            .read_to_string(&mut input)
            .map_err(|e| TraceDecayError::Config {
                message: format!("failed to read stdin: {e}"),
            })?;
        cached = Some(input.clone());
        Ok(input)
    })
}

pub(super) fn parse_invocation_with_stdin(
    def: &ToolDefinition,