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
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
use std::iter::FromIterator;
use std::str::FromStr;

use toml_datetime::*;

use crate::key::Key;
use crate::parser;
use crate::repr::{Decor, Formatted};
use crate::{Array, InlineTable, InternalString, RawString};

/// Representation of a TOML Value (as part of a Key/Value Pair).
#[derive(Debug, Clone)]
pub enum Value {
    /// A string value.
    String(Formatted<String>),
    /// A 64-bit integer value.
    Integer(Formatted<i64>),
    /// A 64-bit float value.
    Float(Formatted<f64>),
    /// A boolean value.
    Boolean(Formatted<bool>),
    /// An RFC 3339 formatted date-time with offset.
    Datetime(Formatted<Datetime>),
    /// An inline array of values.
    Array(Array),
    /// An inline table of key/value pairs.
    InlineTable(InlineTable),
}

/// Downcasting
impl Value {
    /// Text description of value type
    pub fn type_name(&self) -> &'static str {
        match self {
            Value::String(..) => "string",
            Value::Integer(..) => "integer",
            Value::Float(..) => "float",
            Value::Boolean(..) => "boolean",
            Value::Datetime(..) => "datetime",
            Value::Array(..) => "array",
            Value::InlineTable(..) => "inline table",
        }
    }

    /// Casts `self` to str.
    pub fn as_str(&self) -> Option<&str> {
        match *self {
            Value::String(ref value) => Some(value.value()),
            _ => None,
        }
    }

    /// Returns true iff `self` is a string.
    pub fn is_str(&self) -> bool {
        self.as_str().is_some()
    }

    /// Casts `self` to integer.
    pub fn as_integer(&self) -> Option<i64> {
        match *self {
            Value::Integer(ref value) => Some(*value.value()),
            _ => None,
        }
    }

    /// Returns true iff `self` is an integer.
    pub fn is_integer(&self) -> bool {
        self.as_integer().is_some()
    }

    /// Casts `self` to float.
    pub fn as_float(&self) -> Option<f64> {
        match *self {
            Value::Float(ref value) => Some(*value.value()),
            _ => None,
        }
    }

    /// Returns true iff `self` is a float.
    pub fn is_float(&self) -> bool {
        self.as_float().is_some()
    }

    /// Casts `self` to boolean.
    pub fn as_bool(&self) -> Option<bool> {
        match *self {
            Value::Boolean(ref value) => Some(*value.value()),
            _ => None,
        }
    }

    /// Returns true iff `self` is a boolean.
    pub fn is_bool(&self) -> bool {
        self.as_bool().is_some()
    }

    /// Casts `self` to date-time.
    pub fn as_datetime(&self) -> Option<&Datetime> {
        match *self {
            Value::Datetime(ref value) => Some(value.value()),
            _ => None,
        }
    }

    /// Returns true iff `self` is a date-time.
    pub fn is_datetime(&self) -> bool {
        self.as_datetime().is_some()
    }

    /// Casts `self` to array.
    pub fn as_array(&self) -> Option<&Array> {
        match *self {
            Value::Array(ref value) => Some(value),
            _ => None,
        }
    }

    /// Casts `self` to mutable array.
    pub fn as_array_mut(&mut self) -> Option<&mut Array> {
        match *self {
            Value::Array(ref mut value) => Some(value),
            _ => None,
        }
    }

    /// Returns true iff `self` is an array.
    pub fn is_array(&self) -> bool {
        self.as_array().is_some()
    }

    /// Casts `self` to inline table.
    pub fn as_inline_table(&self) -> Option<&InlineTable> {
        match *self {
            Value::InlineTable(ref value) => Some(value),
            _ => None,
        }
    }

    /// Casts `self` to mutable inline table.
    pub fn as_inline_table_mut(&mut self) -> Option<&mut InlineTable> {
        match *self {
            Value::InlineTable(ref mut value) => Some(value),
            _ => None,
        }
    }

    /// Returns true iff `self` is an inline table.
    pub fn is_inline_table(&self) -> bool {
        self.as_inline_table().is_some()
    }
}

impl Value {
    /// Get the decoration of the value.
    /// # Example
    /// ```rust
    /// let v = toml_edit::Value::from(true);
    /// assert_eq!(v.decor().suffix(), None);
    ///```
    pub fn decor_mut(&mut self) -> &mut Decor {
        match self {
            Value::String(f) => f.decor_mut(),
            Value::Integer(f) => f.decor_mut(),
            Value::Float(f) => f.decor_mut(),
            Value::Boolean(f) => f.decor_mut(),
            Value::Datetime(f) => f.decor_mut(),
            Value::Array(a) => a.decor_mut(),
            Value::InlineTable(t) => t.decor_mut(),
        }
    }

    /// Get the decoration of the value.
    /// # Example
    /// ```rust
    /// let v = toml_edit::Value::from(true);
    /// assert_eq!(v.decor().suffix(), None);
    ///```
    pub fn decor(&self) -> &Decor {
        match *self {
            Value::String(ref f) => f.decor(),
            Value::Integer(ref f) => f.decor(),
            Value::Float(ref f) => f.decor(),
            Value::Boolean(ref f) => f.decor(),
            Value::Datetime(ref f) => f.decor(),
            Value::Array(ref a) => a.decor(),
            Value::InlineTable(ref t) => t.decor(),
        }
    }

    /// Sets the prefix and the suffix for value.
    /// # Example
    /// ```rust
    /// let mut v = toml_edit::Value::from(42);
    /// assert_eq!(&v.to_string(), "42");
    /// let d = v.decorated(" ", " ");
    /// assert_eq!(&d.to_string(), " 42 ");
    /// ```
    pub fn decorated(mut self, prefix: impl Into<RawString>, suffix: impl Into<RawString>) -> Self {
        self.decorate(prefix, suffix);
        self
    }

    pub(crate) fn decorate(&mut self, prefix: impl Into<RawString>, suffix: impl Into<RawString>) {
        let decor = self.decor_mut();
        *decor = Decor::new(prefix, suffix);
    }

    /// Returns the location within the original document
    pub(crate) fn span(&self) -> Option<std::ops::Range<usize>> {
        match self {
            Value::String(f) => f.span(),
            Value::Integer(f) => f.span(),
            Value::Float(f) => f.span(),
            Value::Boolean(f) => f.span(),
            Value::Datetime(f) => f.span(),
            Value::Array(a) => a.span(),
            Value::InlineTable(t) => t.span(),
        }
    }

    pub(crate) fn despan(&mut self, input: &str) {
        match self {
            Value::String(f) => f.despan(input),
            Value::Integer(f) => f.despan(input),
            Value::Float(f) => f.despan(input),
            Value::Boolean(f) => f.despan(input),
            Value::Datetime(f) => f.despan(input),
            Value::Array(a) => a.despan(input),
            Value::InlineTable(t) => t.despan(input),
        }
    }
}

impl FromStr for Value {
    type Err = crate::TomlError;

    /// Parses a value from a &str
    fn from_str(s: &str) -> Result<Self, Self::Err> {
        parser::parse_value(s)
    }
}

impl<'b> From<&'b Value> for Value {
    fn from(s: &'b Value) -> Self {
        s.clone()
    }
}

impl<'b> From<&'b str> for Value {
    fn from(s: &'b str) -> Self {
        s.to_owned().into()
    }
}

impl<'b> From<&'b String> for Value {
    fn from(s: &'b String) -> Self {
        s.to_owned().into()
    }
}

impl From<String> for Value {
    fn from(s: String) -> Self {
        Value::String(Formatted::new(s))
    }
}

impl<'b> From<&'b InternalString> for Value {
    fn from(s: &'b InternalString) -> Self {
        s.as_str().into()
    }
}

impl From<InternalString> for Value {
    fn from(s: InternalString) -> Self {
        s.as_str().into()
    }
}

impl From<i64> for Value {
    fn from(i: i64) -> Self {
        Value::Integer(Formatted::new(i))
    }
}

impl From<f64> for Value {
    fn from(f: f64) -> Self {
        Value::Float(Formatted::new(f))
    }
}

impl From<bool> for Value {
    fn from(b: bool) -> Self {
        Value::Boolean(Formatted::new(b))
    }
}

impl From<Datetime> for Value {
    fn from(d: Datetime) -> Self {
        Value::Datetime(Formatted::new(d))
    }
}

impl From<Date> for Value {
    fn from(d: Date) -> Self {
        let d: Datetime = d.into();
        d.into()
    }
}

impl From<Time> for Value {
    fn from(d: Time) -> Self {
        let d: Datetime = d.into();
        d.into()
    }
}

impl From<Array> for Value {
    fn from(array: Array) -> Self {
        Value::Array(array)
    }
}

impl From<InlineTable> for Value {
    fn from(table: InlineTable) -> Self {
        Value::InlineTable(table)
    }
}

impl<V: Into<Value>> FromIterator<V> for Value {
    fn from_iter<I>(iter: I) -> Self
    where
        I: IntoIterator<Item = V>,
    {
        let array: Array = iter.into_iter().collect();
        Value::Array(array)
    }
}

impl<K: Into<Key>, V: Into<Value>> FromIterator<(K, V)> for Value {
    fn from_iter<I>(iter: I) -> Self
    where
        I: IntoIterator<Item = (K, V)>,
    {
        let table: InlineTable = iter.into_iter().collect();
        Value::InlineTable(table)
    }
}

impl std::fmt::Display for Value {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        crate::encode::Encode::encode(self, f, None, ("", ""))
    }
}

// `key1 = value1`
pub(crate) const DEFAULT_VALUE_DECOR: (&str, &str) = (" ", "");
// `{ key = value }`
pub(crate) const DEFAULT_TRAILING_VALUE_DECOR: (&str, &str) = (" ", " ");
// `[value1, value2]`
pub(crate) const DEFAULT_LEADING_VALUE_DECOR: (&str, &str) = ("", "");

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn from_iter_formatting() {
        let features = vec!["node".to_owned(), "mouth".to_owned()];
        let features: Value = features.iter().cloned().collect();
        assert_eq!(features.to_string(), r#"["node", "mouth"]"#);
    }
}