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

#![cfg(not(feature = "no_object"))]

use crate::engine::OP_EQUALS;
use crate::plugin::*;
use crate::{def_package, Dynamic, ImmutableString, Map, INT};
#[cfg(feature = "no_std")]
use std::prelude::v1::*;

#[cfg(not(feature = "no_index"))]
use crate::Array;

def_package!(crate:BasicMapPackage:"Basic object map utilities.", lib, {
    lib.standard = true;

    combine_with_exported_module!(lib, "map", map_functions);
});

#[export_module]
mod map_functions {
    #[rhai_fn(name = "has", pure)]
    pub fn contains(map: &mut Map, prop: ImmutableString) -> bool {
        if map.is_empty() {
            false
        } else {
            map.contains_key(prop.as_str())
        }
    }
    #[rhai_fn(pure)]
    pub fn len(map: &mut Map) -> INT {
        map.len() as INT
    }
    pub fn clear(map: &mut Map) {
        if !map.is_empty() {
            map.clear();
        }
    }
    pub fn remove(map: &mut Map, name: ImmutableString) -> Dynamic {
        if !map.is_empty() {
            map.remove(name.as_str()).unwrap_or_else(|| Dynamic::UNIT)
        } else {
            Dynamic::UNIT
        }
    }
    #[rhai_fn(name = "mixin", name = "+=")]
    pub fn mixin(map: &mut Map, map2: Map) {
        if !map2.is_empty() {
            map.extend(map2.into_iter());
        }
    }
    #[rhai_fn(name = "+")]
    pub fn merge(map1: Map, map2: Map) -> Map {
        if map2.is_empty() {
            map1
        } else if map1.is_empty() {
            map2
        } else {
            let mut map1 = map1;
            map1.extend(map2.into_iter());
            map1
        }
    }
    pub fn fill_with(map: &mut Map, map2: Map) {
        if !map2.is_empty() {
            if map.is_empty() {
                *map = map2;
            } else {
                map2.into_iter().for_each(|(key, value)| {
                    map.entry(key).or_insert(value);
                });
            }
        }
    }
    #[rhai_fn(name = "==", return_raw, pure)]
    pub fn equals(
        ctx: NativeCallContext,
        map1: &mut Map,
        map2: Map,
    ) -> Result<bool, Box<EvalAltResult>> {
        if map1.len() != map2.len() {
            return Ok(false);
        }

        if !map1.is_empty() {
            let mut map2 = map2;

            for (m1, v1) in map1.iter_mut() {
                if let Some(v2) = map2.get_mut(m1) {
                    let equals = ctx
                        .call_fn_raw(OP_EQUALS, true, false, &mut [v1, v2])
                        .map(|v| v.as_bool().unwrap_or(false))?;

                    if !equals {
                        return Ok(false);
                    }
                } else {
                    return Ok(false);
                }
            }
        }

        Ok(true)
    }
    #[rhai_fn(name = "!=", return_raw, pure)]
    pub fn not_equals(
        ctx: NativeCallContext,
        map1: &mut Map,
        map2: Map,
    ) -> Result<bool, Box<EvalAltResult>> {
        equals(ctx, map1, map2).map(|r| !r)
    }

    #[cfg(not(feature = "no_index"))]
    #[rhai_fn(pure)]
    pub fn keys(map: &mut Map) -> Array {
        if map.is_empty() {
            Array::new()
        } else {
            map.keys().cloned().map(Into::<Dynamic>::into).collect()
        }
    }
    #[cfg(not(feature = "no_index"))]
    #[rhai_fn(pure)]
    pub fn values(map: &mut Map) -> Array {
        if map.is_empty() {
            Array::new()
        } else {
            map.values().cloned().collect()
        }
    }
}