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#[macro_export]
macro_rules! typed_tool {
(
$name:ident,
[
$(
$variant:ident $( ($arg:ty) )?
=> $description:literal
),* $(,)?
]
) => {
impl TypedTool for $name {
fn tool_name(&self) -> &'static str {
stringify!($name)
}
fn variants() -> &'static [ToolVariant] {
const _: () = {
fn to_snake_case(s: &str) -> &'static str {
let mut result = String::new();
for (i, c) in s.chars().enumerate() {
if c.is_uppercase() {
if i > 0 {
result.push('_');
}
result.push(c.to_lowercase().next().unwrap());
} else {
result.push(c);
}
}
let mut owned = result;
Box::leak(owned.into_boxed_str())
}
fn make_variants() -> [ToolVariant; { 0 $( + 1 )* }] {
[
$(
ToolVariant {
name: to_snake_case(stringify!($variant)),
description: $description,
}
),*
]
}
};
static VARIANTS: [ToolVariant; { 0 $( + 1 )* }] = [
$(
{
fn to_snake_case(s: &str) -> &'static str {
let mut result = String::new();
for (i, c) in s.chars().enumerate() {
if c.is_uppercase() {
if i > 0 {
result.push('_');
}
result.push(c.to_lowercase().next().unwrap());
} else {
result.push(c);
}
}
Box::leak(result.into_boxed_str())
}
ToolVariant {
name: to_snake_case(stringify!($variant)),
description: $description,
}
}
),*
];
&VARIANTS
}
}
};
}
#[cfg(test)]
mod tests {
use super::*;
use schemars::JsonSchema;
#[derive(Debug, Clone, Serialize, Deserialize)]
enum TestTools {
#[allow(dead_code)]
WhoAmI,
}
#[derive(Debug, Clone, Serialize, Deserialize, JsonSchema)]
enum TestToolsWithSchema {
#[allow(dead_code)]
WhoAmI,
}
#[test]
fn test_typed_tool_macro() {
typed_tool!(TestTools, [
WhoAmI => "Get user info",
]);
let tool = TestTools::WhoAmI;
assert_eq!(tool.tool_name(), "TestTools");
}
}