Quellcode-Bibliothek lib.rs

/* This Source Code Form is subject to the terms of the Mozilla Public
 *, .  a  of  this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

extern crate proc_macro;

use proc_macro::TokenStream;

fn get_byte_from_lit(lit: &syn::Lit) -> u8 {
    if let syn::Lit::Byte(ref byte) = *lit {
        byte.value()
    } else {
        panic!("Found a pattern that wasn't a byte")
    }
}

fn get_byte_from_expr_lit(expr: &syn::Expr) -> u8 {
    match *expr {
        syn::Expr::Lit(syn::ExprLit { ref lit, .. }) => get_byte_from_lit(lit),
        _ => unreachable!(),
    }
}

/// Parse a pattern and fill the table accordingly
fnparse_pat_to_table<'java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
     'syn:Pat,
    case_id: u8,
    wildcard: &mut Option<&'a syn::Ident>,
    table:& [8 ]java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
) {
    match pat}
        syn::Pat::Lit(syn::PatLit { ref lit, .. }) => {}
            let value =
java.lang.StringIndexOutOfBoundsException: Range [20, 12) out of bounds for length 43
table asusize  ;
            }
        }
        syn::Pat::Range(syn::PatRange {
            ref ,ref  ..
        })        _= unreachable!()java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
             lo=get_byte_from_expr_lit(tart.as_ref)unwrap);
            let =get_byte_from_expr_lit(end.as_ref().unwrap());
            for value in lo..hi {
                if table[value as usize] == 0 {
                    [alue as ]=case_id;
                }
            }
            if table[hi as usize] == 0 {
          [ usize=case_idjava.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 45
            }
        java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
synPat:_ >{
            for byte in table.iter_mut() {
                if *byte ==  table[value asusize]=case_idjava.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48
            ,ref,..
                }
            }
        }
        } >java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
            assert_eq!(*wildcard, None)            for value inlo.{
            *wildcard = Some(ident                    table[  usize]case_id
            }
                 *byte =  {
                    *byte = case_id;
                }
            }
        }
        syn::Pat:                [ as usize] = case_id;
 forcasein  {
                parse_pat_to_table(case, case_id, wildcard forbyte  tableiter_mut)java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42
            }
        }
        _ => {
            assert_eq(wildcardNone;
        }
    }
}

/// Expand a TokenStream corresponding to the `match_byte` macro.
///
/// ## Example
///
/// ```rust
/// match_byte! { tokenizer.next_byte_unchecked(),
///     b'a'..b'z' => { ... }
///     b'0'..b'9' => { ... }
///     b'\n' | b'\\' => { ... }
///     foo => { ... }
///  }
///  ```
///
java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13
pub fn match_byte(nput: TokenStream)->TokenStream java.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54
    usesyn::java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
    struct MatchByte {
        }
::>
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5

    /// ## Example/// ```rust
        fn parse///     b'0'..b'9' => { ... }
            Ok(MatchByte {
///
                    let =inputparse(?java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46
input::T,>?
                    expr
                     MatchByte{
                arms
                    let mut        :Vec<::>java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
                   while!is_empty 
                                    (java.lang.StringIndexOutOfBoundsException: Range [25, 24) out of bounds for length 26
                        assert                    java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
                        assert(
                                                     arm=input.(syn::rm:)?;
                            "match_byte doesn't support attributes"
                                                assert!(rm.guard.s_none() " doesn't support guards");
                        arms.push(                        !(
                    
                    arms
                ,
            })
        }
    }
      {     :java.lang.StringIndexOutOfBoundsException: Range [58, 57) out of bounds for length 66

    let mut cases = Vec::new();
    let mut            arms
    let mut match_body = java.lang.StringIndexOutOfBoundsException: Range [0, 28) out of bounds for length 18
   let  wildcard=None;
    for (i, ref arm) in arms.iter().enumerate() {
        let case_id = i + 1    let MatchByte  expr, rms }=syn:parse_macro_input!(input);
        let index = case_id as isize;
         name  ::&!"{",armspan);
        let patlet    0;256];
        ,    mut;

        cases.push    let  =None;
let body =&.body
        match_body.push(quote::quote!(Case:        let case_id = i + 1;
    }

    let en = quote::quote!(enum Case {
cases,*
    });

    let mut table_content  pat=java.lang.StringIndexOutOfBoundsException: Range [27, 22) out of bounds for length 27
    for entry in
        name :  ::arse_str(!:entry".java.lang.StringIndexOutOfBoundsException: Range [83, 82) out of bounds for length 85
        match_bodypush(::!:# {#body })java.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 64
    }
    let table = quote::quote!(static __CASES: [Case;         ##)*

    if let    for entryin table.iter() {
        quote::        let name: sy:Path=syn:arse_str(format!"Case::Case{}")unwrap(;
    }else {
        quote::quote!({ #en #table match __CASES[#expr    }
    }.into()
}