//! The non_fmt_panics lint detects panic!(..) invocations where
//! the first argument is not a formatting string.
//!
//! Also, this test checks that this is not emitted if it originates
//! in an external macro.

//@ run-rustfix
//@ rustfix-only-machine-applicable
//@ build-pass (FIXME(62277): should be check-pass)
//@ aux-build:fancy-panic.rs

extern crate fancy_panic;

const C: &str = "abc {}";
static S: &str = "{bla}";

#[allow(unreachable_code)]
fn main() {
    panic!("{}", "here's a brace: {"); //~ WARN panic message contains a brace
    unreachable!("{}", "here's a brace: {"); //~ WARN panic message contains a brace
    std::panic!("{}", "another one: }"); //~ WARN panic message contains a brace
    core::panic!("{}", "Hello {}"); //~ WARN panic message contains an unused formatting placeholder
    assert!(false, "{}", "{:03x} {test} bla");
    //~^ WARN panic message contains unused formatting placeholders
    assert!(false, "{}", S);
    //~^ WARN panic message is not a string literal
    assert!(false, "{}", 123);
    //~^ WARN panic message is not a string literal
    assert!(false, "{:?}", Some(123));
    //~^ WARN panic message is not a string literal
    debug_assert!(false, "{}", "{{}} bla"); //~ WARN panic message contains braces
    panic!("{}", C); //~ WARN panic message is not a string literal
    panic!("{}", S); //~ WARN panic message is not a string literal
    unreachable!("{}", S); //~ WARN panic message is not a string literal
    unreachable!("{}", S); //~ WARN panic message is not a string literal
    std::panic::panic_any(123); //~ WARN panic message is not a string literal
    core::panic!("{}", &*"abc"); //~ WARN panic message is not a string literal
    std::panic::panic_any(Some(123)); //~ WARN panic message is not a string literal
    panic!("{}", concat!("{", "}")); //~ WARN panic message contains an unused formatting placeholder
    panic!("{}", concat!("{", "{")); //~ WARN panic message contains braces

    fancy_panic::fancy_panic!("test {} 123");
    //~^ WARN panic message contains an unused formatting placeholder

    fancy_panic::fancy_panic!(); // OK
    fancy_panic::fancy_panic!(S); // OK

    macro_rules! a {
        () => { 123 };
    }

    std::panic::panic_any(a!()); //~ WARN panic message is not a string literal
    unreachable!("{}", a!()); //~ WARN panic message is not a string literal

    panic!("{}", 1); //~ WARN panic message is not a string literal
    unreachable!("{}", 1); //~ WARN panic message is not a string literal
    assert!(false, "{}", 1); //~ WARN panic message is not a string literal
    debug_assert!(false, "{}", 1); //~ WARN panic message is not a string literal

    std::panic::panic_any(123); //~ WARN panic message is not a string literal
    std::panic::panic_any(123); //~ WARN panic message is not a string literal

    // Check that the lint only triggers for std::panic and core::panic,
    // not any panic macro:
    macro_rules! panic {
        ($e:expr) => ();
    }
    panic!("{}"); // OK
    panic!(S); // OK

    a(1);
    b(1);
    c(1);
    d(1);
}

fn a<T: Send + 'static>(v: T) {
    std::panic::panic_any(v); //~ WARN panic message is not a string literal
    assert!(false, v); //~ WARN panic message is not a string literal
}

fn b<T: std::fmt::Debug + Send + 'static>(v: T) {
    std::panic::panic_any(v); //~ WARN panic message is not a string literal
    assert!(false, "{:?}", v); //~ WARN panic message is not a string literal
}

fn c<T: std::fmt::Display + Send + 'static>(v: T) {
    std::panic::panic_any(v); //~ WARN panic message is not a string literal
    assert!(false, "{}", v); //~ WARN panic message is not a string literal
}

fn d<T: std::fmt::Display + std::fmt::Debug + Send + 'static>(v: T) {
    std::panic::panic_any(v); //~ WARN panic message is not a string literal
    assert!(false, "{}", v); //~ WARN panic message is not a string literal
}