fn check_consistent_bindings(&mut self, arm: &Arm) {
        if arm.pats.len() == 0 { return; }
        let map_0 = self.binding_mode_map(arm.pats[0]);
        for (i, p) in arm.pats.iter().enumerate() {
            let map_i = self.binding_mode_map(*p);

            for (&key, &binding_0) in map_0.iter() {
                match map_i.find(&key) {
                  None => {
                    self.resolve_error(
                        p.span,
                        format!("variable `{}` from pattern \\#1 is \
                                  not bound in pattern \\#{}",
                             interner_get(key), i + 1));
                  }
                  Some(binding_i) => {
                    if binding_0.binding_mode != binding_i.binding_mode {
                        self.resolve_error(
                            binding_i.span,
                            format!("variable `{}` is bound with different \
                                      mode in pattern \\#{} than in pattern \\#1",
                                 interner_get(key), i + 1));
                    }
                  }
                }
            }

            for (&key, &binding) in map_i.iter() {
                if !map_0.contains_key(&key) {
                    self.resolve_error(
                        binding.span,
                        format!("variable `{}` from pattern \\#{} is \
                                  not bound in pattern \\#1",
                             interner_get(key), i + 1));
                }
            }
        }
    }
// check that all of the arms in an or-pattern have exactly the
// same set of bindings, with the same binding modes for each.
check that all of the arms in an or-pattern have exactly the
same set of bindings, with the same binding modes for each.
check that all of the arms in an or - pattern have exactly the same set of bindings with the same binding modes for each .
fn check_consistent_bindings(&mut self, arm: &Arm) {
        if arm.pats.len() == 0 { return; }
        let map_0 = self.binding_mode_map(arm.pats[0]);
        for (i, p) in arm.pats.iter().enumerate() {
            let map_i = self.binding_mode_map(*p);
            for (&key, &binding_0) in map_0.iter() {
                match map_i.find(&key) {
                  None => {
                    self.resolve_error(
                        p.span,
                        format!("variable `{}` from pattern \\#1 is \
                                  not bound in pattern \\#{}",
                             interner_get(key), i + 1));
                  }
                  Some(binding_i) => {
                    if binding_0.binding_mode != binding_i.binding_mode {
                        self.resolve_error(
                            binding_i.span,
                            format!("variable `{}` is bound with different \
                                      mode in pattern \\#{} than in pattern \\#1",
                                 interner_get(key), i + 1));
                    }
                  }
                }
            }
            for (&key, &binding) in map_i.iter() {
                if !map_0.contains_key(&key) {
                    self.resolve_error(
                        binding.span,
                        format!("variable `{}` from pattern \\#{} is \
                                  not bound in pattern \\#1",
                             interner_get(key), i + 1));
                }
            }
        }
    }
fn check_consistent_bindings ( & mut self , arm : & Arm ) { if arm . pats . len ( ) == 0 { return ; } let map_0 = self . binding_mode_map ( arm . pats [ 0 ] ) ; for ( i , p ) in arm . pats . iter ( ) . enumerate ( ) { let map_i = self . binding_mode_map ( * p ) ; for ( & key , & binding_0 ) in map_0 . iter ( ) { match map_i . find ( & key ) { None => { self . resolve_error ( p . span , format ! ( " \\ \
 \\ " interner_get ( key ) i 1 ) ) ; } Some ( binding_i ) => { if binding_0 . binding_mode != binding_i . binding_mode { self . resolve_error ( binding_i . span , format ! ( " \
 \\ \\ " interner_get ( key ) i 1 ) ) ; } } } } for ( & key , & binding ) in map_i . iter ( ) { if ! map_0 . contains_key ( & key ) { self . resolve_error ( binding . span , format ! ( " \\ \
 \\ " interner_get ( key ) i 1 ) ) ; } } } }
check that all of the arms in an or-pattern have exactly the
same set of bindings, with the same binding modes for each.
check that all of the arms in an or - pattern have exactly the same set of bindings with the same binding modes for each .
&mut self
arm
&Arm
&mut self
arm
&Arm