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
|
use crate::{
expression::Composite,
selection::{Selection, VectoriseError},
selection_functions::{evaluate_selection_function, SFError},
state::{EditorState, StateResult},
};
use thiserror::Error;
#[derive(Error, Debug)]
pub enum EvaluationError {
#[error("{0}")]
SelectionFunctionError(VectoriseError<SFError>),
#[error("Invalid right-only application")]
IROApplication,
#[error("Not yet implemented {0}")]
UnimplementedError(&'static str),
}
pub fn evaluate(
es: &EditorState,
comp: Composite,
left: Option<Selection>,
right: Option<Selection>,
) -> Result<StateResult, EvaluationError> {
if left.is_none() && right.is_some() {
return Err(EvaluationError::IROApplication);
};
match comp {
Composite::SelectionFunction {
func,
search_mod,
result_transform,
} => {
let sel =
evaluate_selection_function(es, func, search_mod, result_transform, left, right)
.map_err(EvaluationError::SelectionFunctionError)?;
Ok((sel, Vec::new()))
}
Composite::TextFunction { func, swapped } => {
Err(EvaluationError::UnimplementedError("text function"))
}
Composite::Hook { kind, left, right } => Err(EvaluationError::UnimplementedError("hook")),
Composite::Train2 { f, g } => {
let (left, mut state) = evaluate(es, *f, left, right)?;
let (sel, more_state) = evaluate(es, *g, Some(left), None)?;
state.extend(more_state);
Ok((sel, state))
}
Composite::Train3 { f, g, h } => {
let (f_left, mut f_state) = evaluate(es, *f, left.clone(), right.clone())?;
let (g_right, h_state) = evaluate(es, *h, left, right)?;
let (sel, g_state) = evaluate(es, *g, Some(f_left), Some(g_right))?;
f_state.extend(h_state);
f_state.extend(g_state);
Ok((sel, f_state))
}
Composite::Group { operations } => {
// TODO: does rust have some monadic failure map thing on first failure?
let mut selections = Vec::new();
let mut states = Vec::new();
for f in operations {
let (sel, state) = evaluate(es, f, left.clone(), right.clone())?;
selections.extend(sel);
states.extend(state);
}
}
}
}
|
