forked from nushell/nushell
-
Notifications
You must be signed in to change notification settings - Fork 0
/
all_true.rs
104 lines (91 loc) · 3 KB
/
all_true.rs
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
use super::super::values::{Column, NuDataFrame};
use nu_protocol::{
ast::Call,
engine::{Command, EngineState, Stack},
Category, Example, PipelineData, ShellError, Signature, Span, Type, Value,
};
#[derive(Clone)]
pub struct AllTrue;
impl Command for AllTrue {
fn name(&self) -> &str {
"all-true"
}
fn usage(&self) -> &str {
"Returns true if all values are true"
}
fn signature(&self) -> Signature {
Signature::build(self.name())
.input_type(Type::Custom("dataframe".into()))
.output_type(Type::Custom("dataframe".into()))
.category(Category::Custom("dataframe".into()))
}
fn examples(&self) -> Vec<Example> {
vec![
Example {
description: "Returns true if all values are true",
example: "[true true true] | into df | all-true",
result: Some(
NuDataFrame::try_from_columns(vec![Column::new(
"all_true".to_string(),
vec![Value::test_bool(true)],
)])
.expect("simple df for test should not fail")
.into_value(Span::test_data()),
),
},
Example {
description: "Checks the result from a comparison",
example: r#"let s = ([5 6 2 8] | into df);
let res = ($s > 9);
$res | all-true"#,
result: Some(
NuDataFrame::try_from_columns(vec![Column::new(
"all_true".to_string(),
vec![Value::test_bool(false)],
)])
.expect("simple df for test should not fail")
.into_value(Span::test_data()),
),
},
]
}
fn run(
&self,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
input: PipelineData,
) -> Result<PipelineData, ShellError> {
command(engine_state, stack, call, input)
}
}
fn command(
_engine_state: &EngineState,
_stack: &mut Stack,
call: &Call,
input: PipelineData,
) -> Result<PipelineData, ShellError> {
let df = NuDataFrame::try_from_pipeline(input, call.head)?;
let series = df.as_series(call.head)?;
let bool = series.bool().map_err(|_| {
ShellError::GenericError(
"Error converting to bool".into(),
"all-false only works with series of type bool".into(),
Some(call.head),
None,
Vec::new(),
)
})?;
let value = Value::boolean(bool.all(), call.head);
NuDataFrame::try_from_columns(vec![Column::new("all_true".to_string(), vec![value])])
.map(|df| PipelineData::Value(NuDataFrame::into_value(df, call.head), None))
}
#[cfg(test)]
mod test {
use super::super::super::test_dataframe::test_dataframe;
use super::*;
#[test]
fn test_examples() {
test_dataframe(vec![Box::new(AllTrue {})])
}
}