rho-coding-agent 1.27.1

A lightweight agent harness inspired by Pi
Documentation 
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

use std::{collections::BTreeMap, path::PathBuf};

use crate::workflow::NodeId;

use super::{
    control::{control_policy, ControlPolicy},
    details::DetailPane,
    event_adapter::{
        WorkflowEvent, WorkflowNodeSnapshot, WorkflowProgress, WorkflowSession, WorkflowSnapshot,
    },
};

pub(super) struct WorkflowUiState {
    session: WorkflowSession,
    snapshot: WorkflowSnapshot,
    selected: usize,
    progress: BTreeMap<NodeId, WorkflowProgress>,
    notice: Option<String>,
    details: DetailPane,
}

impl WorkflowUiState {
    pub(super) fn new(
        session: WorkflowSession,
        snapshot: WorkflowSnapshot,
        run_directory: Option<PathBuf>,
    ) -> Self {
        let mut state = Self {
            session,
            snapshot,
            selected: 0,
            progress: BTreeMap::new(),
            notice: None,
            details: DetailPane::default(),
        };
        state.details.set_run_directory(run_directory);
        state.refresh_details(/*reset_scroll*/ true);
        state
    }

    pub(super) fn apply(&mut self, event: WorkflowEvent) {
        match event {
            WorkflowEvent::Snapshot(snapshot) => {
                let previous_id = self.selected_node().map(|node| node.id.clone());
                self.snapshot = snapshot;
                self.selected = self
                    .selected
                    .min(self.snapshot.nodes.len().saturating_sub(1));
                // Keep the user on the same node when possible; otherwise prefer work in flight.
                if let Some(previous_id) = previous_id {
                    if let Some(index) = self
                        .snapshot
                        .nodes
                        .iter()
                        .position(|node| node.id == previous_id)
                    {
                        self.selected = index;
                        self.refresh_details(/*reset_scroll*/ false);
                        return;
                    }
                }
                if let Some(index) = self.snapshot.nodes.iter().position(|node| {
                    matches!(node.state, crate::workflow::NodeState::Running { .. })
                }) {
                    self.selected = index;
                }
                self.refresh_details(/*reset_scroll*/ true);
            }
            WorkflowEvent::Progress { node, progress } => {
                self.progress.insert(node, progress);
            }
            WorkflowEvent::Notice(notice) => self.notice = Some(notice),
        }
    }

    pub(super) fn snapshot(&self) -> &WorkflowSnapshot {
        &self.snapshot
    }

    pub(super) fn policy(&self) -> ControlPolicy {
        control_policy(self.session, &self.snapshot)
    }

    pub(super) fn session(&self) -> WorkflowSession {
        self.session
    }

    pub(super) fn selected_node(&self) -> Option<&WorkflowNodeSnapshot> {
        self.snapshot.nodes.get(self.selected)
    }

    pub(super) fn selected_index(&self) -> usize {
        self.selected
    }

    pub(super) fn progress(&self, node: &WorkflowNodeSnapshot) -> Option<&WorkflowProgress> {
        self.progress
            .get(&node.id)
            .filter(|progress| Some(progress.attempt) == node.current_attempt)
    }

    pub(super) fn notice(&self) -> Option<&str> {
        self.notice.as_deref()
    }

    pub(super) fn details(&self) -> &DetailPane {
        &self.details
    }

    pub(super) fn details_mut(&mut self) -> &mut DetailPane {
        &mut self.details
    }

    pub(super) fn select_previous(&mut self) {
        let previous = self.selected;
        self.selected = self.selected.saturating_sub(1);
        if self.selected != previous {
            self.refresh_details(/*reset_scroll*/ true);
        }
    }

    pub(super) fn select_next(&mut self) {
        if self.selected + 1 < self.snapshot.nodes.len() {
            self.selected += 1;
            self.refresh_details(/*reset_scroll*/ true);
        }
    }

    pub(super) fn can_exit(&self) -> bool {
        self.policy().can_leave
    }

    fn refresh_details(&mut self, reset_scroll: bool) {
        // Avoid borrowing selected node while mutating details via split fields.
        let node = self.snapshot.nodes.get(self.selected).cloned();
        self.details.refresh(node.as_ref(), reset_scroll);
    }
}

#[cfg(test)]
#[path = "state_tests.rs"]
mod tests;