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Improve loadable extension docs, clippy

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This commit is contained in:
Yuri Astrakhan 2024-07-16 14:24:06 -04:00
parent b842783c83
commit 57d1562bf8
1 changed files with 18 additions and 12 deletions
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30
examples/loadable_extension.rs
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@ -1,4 +1,18 @@
//! Adaptation of https://sqlite.org/loadext.html#programming_loadable_extensions
//!
//! # build
//! ```sh
//! cargo build --example loadable_extension --features "loadable_extension functions trace"
//! ```
//!
//! # test
//! ```sh
//! sqlite> .log on
//! sqlite> .load target/debug/examples/libloadable_extension.so
//! (28) Rusqlite extension initialized
//! sqlite> SELECT rusqlite_test_function();
//! Rusqlite extension loaded correctly!
//! ```
use std::os::raw::{c_char, c_int};
use rusqlite::ffi;
@ -6,18 +20,10 @@ use rusqlite::functions::FunctionFlags;
use rusqlite::types::{ToSqlOutput, Value};
use rusqlite::{Connection, Result};
/// # build
/// ```sh
/// cargo build --example loadable_extension --features "loadable_extension functions trace"
/// ```
/// # test
/// ```sh
/// sqlite> .log on
/// sqlite> .load target/debug/examples/libloadable_extension.so
/// (28) Rusqlite extension initialized
/// sqlite> SELECT rusqlite_test_function();
/// Rusqlite extension loaded correctly!
/// ```
/// Entry point for SQLite to load the extension.
/// See <https://sqlite.org/c3ref/load_extension.html> on this function's name and usage.
/// # Safety
/// This function is called by SQLite and must be safe to call.
#[expect(clippy::not_unsafe_ptr_arg_deref)]
#[no_mangle]
pub unsafe extern "C" fn sqlite3_extension_init(