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//! 类型转换为string

//! author：wangdong

//! time：2020-09-30 14:13:56

use std::string::ToString;
use std::str;
//use std::fmt::Write;


pub trait Cast{
    fn string(&self)->String{
        String::new()
    }
}
/// 转换类型为string

/// 

/// #Examples

/// 

/// ```

/// let a = to_string!(32);

/// 

/// ```

#[macro_export]
macro_rules! r#string {
    ($value:expr) => {
        $crate::string::to_string($value)
    };
}

/// 转换类型为string

/// 

/// #Examples

/// 

/// ```

/// let a = to_string(32);

/// 

/// ```

#[allow(dead_code)]
pub fn to_string<T:Cast>(opt:T)->String{
    opt.string()
}

impl Cast for &str{
    fn string(&self)->String{
        String::from(*self)
    }
}

impl Cast for i8{
    fn string(&self)->String{
        self.to_string()
    }
}
impl Cast for i16{
    fn string(&self)->String{
        self.to_string()
    }
}
impl Cast for i32{
    fn string(&self)->String{
        self.to_string()
    }
}
impl Cast for i64{
    fn string(&self)->String{
        self.to_string()
    }
}
impl Cast for i128{
    fn string(&self)->String{
        self.to_string()
    }
}
impl Cast for u8{
    fn string(&self)->String{
        self.to_string()
    }
}
impl Cast for u16{
    fn string(&self)->String{
        self.to_string()
    }
}
impl Cast for u32{
    fn string(&self)->String{
        self.to_string()
    }
}
impl Cast for u64{
    fn string(&self)->String{
        self.to_string()
    }
}
impl Cast for u128{
    fn string(&self)->String{
        self.to_string()
    }
}

impl Cast for f32{
    fn string(&self)->String{
        self.to_string()
    }
}

impl Cast for f64{
    fn string(&self)->String{
        self.to_string()
    }
}

impl Cast for bool{
    fn string(&self)->String{
        self.to_string()
    }
}

impl Cast for &[u8] {
    fn string(&self)->String{
    //     let mut signature_string = String::new();

    //     for a in self.iter() { 

    //         match write!(signature_string, "{:02x}", a){

    //             Err(_)=>{

    //                 return String::new();

    //             },

    //             Ok(())=>{}

    //         }

    //     }

    //    signature_string

        unsafe{
            String::from_utf8_unchecked((*self).to_vec())
        }
    }
}

impl Cast for Vec<u8> {
    fn string(&self)->String{
        unsafe{
            String::from_utf8_unchecked(self.to_vec())
        }
    }
}