// Copyright 2016 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.


// This test case tests the incremental compilation hash (ICH) implementation
// for function and method call expressions.

// The general pattern followed here is: Change one thing between rev1 and rev2
// and make sure that the hash has changed, then change nothing between rev2 and
// rev3 and make sure that the hash has not changed.

// must-compile-successfully
// revisions: cfail1 cfail2 cfail3
// compile-flags: -Z query-dep-graph -Zincremental-ignore-spans


#![allow(warnings)]
#![feature(rustc_attrs)]
#![crate_type="rlib"]

fn callee1(_x: u32, _y: i64) {}
fn callee2(_x: u32, _y: i64) {}


// Change Callee (Function) ----------------------------------------------------
#[cfg(cfail1)]
pub fn change_callee_function() {
    callee1(1, 2)
}

#[cfg(not(cfail1))]
#[rustc_clean(cfg="cfail2", except="HirBody,MirValidated,MirOptimized,TypeckTables")]
#[rustc_clean(cfg="cfail3")]
pub fn change_callee_function() {
    callee2(1, 2)
}



// Change Argument (Function) --------------------------------------------------
#[cfg(cfail1)]
pub fn change_argument_function() {
    callee1(1, 2)
}

#[cfg(not(cfail1))]
#[rustc_clean(cfg="cfail2", except="HirBody,MirValidated,MirOptimized")]
#[rustc_clean(cfg="cfail3")]
pub fn change_argument_function() {
    callee1(1, 3)
}



// Change Callee Indirectly (Function) -----------------------------------------
mod change_callee_indirectly_function {
    #[cfg(cfail1)]
    use super::callee1 as callee;
    #[cfg(not(cfail1))]
    use super::callee2 as callee;

    #[rustc_clean(label="Hir", cfg="cfail2")]
    #[rustc_clean(label="Hir", cfg="cfail3")]
    #[rustc_dirty(label="HirBody", cfg="cfail2")]
    #[rustc_clean(label="HirBody", cfg="cfail3")]


    pub fn change_callee_indirectly_function() {
        callee(1, 2)
    }
}


struct Struct;
impl Struct {
    fn method1(&self, _x: char, _y: bool) {}
    fn method2(&self, _x: char, _y: bool) {}
}

// Change Callee (Method) ------------------------------------------------------
#[cfg(cfail1)]
pub fn change_callee_method() {
    let s = Struct;
    s.method1('x', true);
}

#[cfg(not(cfail1))]
#[rustc_clean(cfg="cfail2", except="HirBody,MirValidated,MirOptimized,TypeckTables")]
#[rustc_clean(cfg="cfail3")]
pub fn change_callee_method() {
    let s = Struct;
    s.method2('x', true);
}



// Change Argument (Method) ----------------------------------------------------
#[cfg(cfail1)]
pub fn change_argument_method() {
    let s = Struct;
    s.method1('x', true);
}

#[cfg(not(cfail1))]
#[rustc_clean(cfg="cfail2", except="HirBody,MirValidated,MirOptimized")]
#[rustc_clean(cfg="cfail3")]
pub fn change_argument_method() {
    let s = Struct;
    s.method1('y', true);
}



// Change Callee (Method, UFCS) ------------------------------------------------
#[cfg(cfail1)]
pub fn change_ufcs_callee_method() {
    let s = Struct;
    Struct::method1(&s, 'x', true);
}

#[cfg(not(cfail1))]
#[rustc_clean(cfg="cfail2", except="HirBody,MirValidated,MirOptimized,TypeckTables")]
#[rustc_clean(cfg="cfail3")]
pub fn change_ufcs_callee_method() {
    let s = Struct;
    Struct::method2(&s, 'x', true);
}



// Change Argument (Method, UFCS) ----------------------------------------------
#[cfg(cfail1)]
pub fn change_argument_method_ufcs() {
    let s = Struct;
    Struct::method1(&s, 'x', true);
}

#[cfg(not(cfail1))]
#[rustc_clean(cfg="cfail2", except="HirBody,MirValidated,MirOptimized")]
#[rustc_clean(cfg="cfail3")]
pub fn change_argument_method_ufcs() {
    let s = Struct;
    Struct::method1(&s, 'x', false);
}



// Change To UFCS --------------------------------------------------------------
#[cfg(cfail1)]
pub fn change_to_ufcs() {
    let s = Struct;
    s.method1('x', true);
}

#[cfg(not(cfail1))]
#[rustc_clean(cfg="cfail2", except="HirBody,MirValidated,MirOptimized,TypeckTables")]
#[rustc_clean(cfg="cfail3")]
// One might think this would be expanded in the HirBody/Mir, but it actually
// results in slightly different Hir/Mir.
pub fn change_to_ufcs() {
    let s = Struct;
    Struct::method1(&s, 'x', true);
}


struct Struct2;
impl Struct2 {
    fn method1(&self, _x: char, _y: bool) {}
}

// Change UFCS Callee Indirectly -----------------------------------------------
pub mod change_ufcs_callee_indirectly {
    #[cfg(cfail1)]
    use super::Struct as Struct;
    #[cfg(not(cfail1))]
    use super::Struct2 as Struct;

    #[rustc_clean(cfg="cfail2", except="HirBody,MirValidated,MirOptimized,TypeckTables")]
    #[rustc_clean(cfg="cfail3")]


    pub fn change_ufcs_callee_indirectly() {
        let s = Struct;
        Struct::method1(&s, 'q', false)
    }
}
