1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160

use std::rc::Rc;
use std::hash::{Hash, Hasher};

use syntax::ast::Expr;
use syntax::codemap::Span;
use syntax::ext::base::{ExtCtxt, MacResult, MacEager};
use syntax::ext::build::AstBuilder;
use syntax::ptr::P;
use syntax::symbol::LocalInternedString;

use phf_shared::PhfHash;
use phf_generator::HashState;

#[derive(PartialEq, Eq, Clone)]
pub enum Key {
    Str(LocalInternedString),
    Binary(Rc<Vec<u8>>),
    Char(char),
    U8(u8),
    I8(i8),
    U16(u16),
    I16(i16),
    U32(u32),
    I32(i32),
    U64(u64),
    I64(i64),
    Bool(bool),
    #[cfg(feature = "unicase_support")]
    UniCase(::unicase::UniCase<String>),
}

impl Hash for Key {
    fn hash<S: Hasher>(&self, state: &mut S) {
        match *self {
            Key::Str(ref s) => s.hash(state),
            Key::Binary(ref b) => b.hash(state),
            Key::Char(c) => c.hash(state),
            Key::U8(b) => b.hash(state),
            Key::I8(b) => b.hash(state),
            Key::U16(b) => b.hash(state),
            Key::I16(b) => b.hash(state),
            Key::U32(b) => b.hash(state),
            Key::I32(b) => b.hash(state),
            Key::U64(b) => b.hash(state),
            Key::I64(b) => b.hash(state),
            Key::Bool(b) => b.hash(state),
            #[cfg(feature = "unicase_support")]
            Key::UniCase(ref u) => u.hash(state),
        }
    }
}

impl PhfHash for Key {
    fn phf_hash<H: Hasher>(&self, state: &mut H) {
        match *self {
            Key::Str(ref s) => s.phf_hash(state),
            Key::Binary(ref b) => b.phf_hash(state),
            Key::Char(c) => c.phf_hash(state),
            Key::U8(b) => b.phf_hash(state),
            Key::I8(b) => b.phf_hash(state),
            Key::U16(b) => b.phf_hash(state),
            Key::I16(b) => b.phf_hash(state),
            Key::U32(b) => b.phf_hash(state),
            Key::I32(b) => b.phf_hash(state),
            Key::U64(b) => b.phf_hash(state),
            Key::I64(b) => b.phf_hash(state),
            Key::Bool(b) => b.phf_hash(state),
            #[cfg(feature = "unicase_support")]
            Key::UniCase(ref u) => u.phf_hash(state),
        }
    }
}

pub struct Entry {
    pub key_contents: Key,
    pub key: P<Expr>,
    pub value: P<Expr>,
}

impl PhfHash for Entry {
    fn phf_hash<H: Hasher>(&self, state: &mut H) {
        self.key_contents.phf_hash(state)
    }
}

pub fn create_map(cx: &mut ExtCtxt,
                  sp: Span,
                  entries: Vec<Entry>,
                  state: HashState)
                  -> Box<MacResult + 'static> {
    let disps = state.disps
                     .iter()
                     .map(|&(d1, d2)| quote_expr!(&*cx, ($d1, $d2)))
                     .collect();
    let disps = cx.expr_vec(sp, disps);

    let entries = state.map
                       .iter()
                       .map(|&idx| {
                           let &Entry { ref key, ref value, .. } = &entries[idx];
                           quote_expr!(&*cx, ($key, $value))
                       })
                       .collect();
    let entries = cx.expr_vec(sp, entries);

    let key = state.key;
    MacEager::expr(quote_expr!(cx, ::phf::Map {
        key: $key,
        disps: ::phf::Slice::Static(&$disps),
        entries: ::phf::Slice::Static(&$entries),
    }))
}

pub fn create_set(cx: &mut ExtCtxt,
                  sp: Span,
                  entries: Vec<Entry>,
                  state: HashState)
                  -> Box<MacResult + 'static> {
    let map = create_map(cx, sp, entries, state).make_expr().unwrap();
    MacEager::expr(quote_expr!(cx, ::phf::Set { map: $map }))
}

pub fn create_ordered_map(cx: &mut ExtCtxt,
                          sp: Span,
                          entries: Vec<Entry>,
                          state: HashState)
                          -> Box<MacResult + 'static> {
    let disps = state.disps
                     .iter()
                     .map(|&(d1, d2)| quote_expr!(&*cx, ($d1, $d2)))
                     .collect();
    let disps = cx.expr_vec(sp, disps);

    let idxs = state.map.iter().map(|&idx| quote_expr!(&*cx, $idx)).collect();
    let idxs = cx.expr_vec(sp, idxs);

    let entries = entries.iter()
                         .map(|&Entry { ref key, ref value, .. }| {
                             quote_expr!(&*cx, ($key, $value))
                         })
                         .collect();
    let entries = cx.expr_vec(sp, entries);

    let key = state.key;
    MacEager::expr(quote_expr!(cx, ::phf::OrderedMap {
        key: $key,
        disps: ::phf::Slice::Static(&$disps),
        idxs: ::phf::Slice::Static(&$idxs),
        entries: ::phf::Slice::Static(&$entries),
    }))
}

pub fn create_ordered_set(cx: &mut ExtCtxt,
                          sp: Span,
                          entries: Vec<Entry>,
                          state: HashState)
                          -> Box<MacResult + 'static> {
    let map = create_ordered_map(cx, sp, entries, state).make_expr().unwrap();
    MacEager::expr(quote_expr!(cx, ::phf::OrderedSet { map: $map }))
}