malvin 0.2.6

Non-interactive research and coding agent
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

use std::path::Path;

use super::gate_restore_checks::substantive_check_lines;
use super::{
    DotfileBackupStateRef, GitignoreBackup, MalvinChecksBackup, MalvinConfigWorkspaceBackup,
    SessionDotfileBackups, VisionBackup,
};

pub(crate) const fn slot_deleted(
    anchor: DotfileBackupStateRef<'_>,
    progress: DotfileBackupStateRef<'_>,
) -> bool {
    matches!(anchor, DotfileBackupStateRef::Present(_))
        && matches!(progress, DotfileBackupStateRef::Missing)
}

pub(crate) const fn slot_bytes(value: DotfileBackupStateRef<'_>) -> Option<&[u8]> {
    match value {
        DotfileBackupStateRef::Present(payload) => Some(payload.bytes.as_slice()),
        DotfileBackupStateRef::Missing => None,
    }
}

pub(crate) fn slot_content_regressed(
    anchor: DotfileBackupStateRef<'_>,
    progress: DotfileBackupStateRef<'_>,
) -> bool {
    let (Some(anchor_bytes), Some(progress_bytes)) = (slot_bytes(anchor), slot_bytes(progress))
    else {
        return false;
    };
    anchor_bytes != progress_bytes
}

pub(crate) fn slot_regressed(
    anchor: DotfileBackupStateRef<'_>,
    progress: DotfileBackupStateRef<'_>,
) -> bool {
    slot_deleted(anchor, progress) || slot_content_regressed(anchor, progress)
}

pub(crate) fn checks_lines_are_superset(anchor_bytes: &[u8], progress_bytes: &[u8]) -> bool {
    let anchor_lines = substantive_check_lines(anchor_bytes);
    let progress_lines = substantive_check_lines(progress_bytes);
    anchor_lines
        .iter()
        .all(|line| progress_lines.iter().any(|p| p == line))
}

pub(crate) fn malvin_checks_regressed(
    anchor: &MalvinChecksBackup,
    progress: &MalvinChecksBackup,
) -> bool {
    let anchor_ref = anchor.as_slot_state();
    let progress_ref = progress.as_slot_state();
    if slot_deleted(anchor_ref, progress_ref) {
        return true;
    }
    let (Some(anchor_bytes), Some(progress_bytes)) =
        (slot_bytes(anchor_ref), slot_bytes(progress_ref))
    else {
        return false;
    };
    if anchor_bytes == progress_bytes {
        return false;
    }
    !checks_lines_are_superset(anchor_bytes, progress_bytes)
}

fn config_workspace_regressed(
    anchor: &MalvinConfigWorkspaceBackup,
    progress: &MalvinConfigWorkspaceBackup,
) -> bool {
    slot_regressed(anchor.as_slot_state(), progress.as_slot_state())
}

fn pick_typed<T: Clone>(anchor: &T, progress: &T, regress_probe: fn(&T, &T) -> bool) -> T {
    if regress_probe(anchor, progress) {
        anchor.clone()
    } else {
        progress.clone()
    }
}

pub(crate) fn root_file_bytes_by_name<'a>(
    files: impl IntoIterator<Item = (&'a Path, &'a [u8])>,
    root_name: &str,
) -> Option<&'a [u8]> {
    files
        .into_iter()
        .find(|(rel, _)| rel.as_os_str() == root_name)
        .map(|(_, bytes)| bytes)
}

pub(crate) const fn root_file_deleted_regressed(
    anchor_root: Option<&[u8]>,
    progress_root: Option<&[u8]>,
) -> bool {
    matches!((anchor_root, progress_root), (Some(_), None))
}

pub(crate) fn gitignore_root_bytes(backup: &GitignoreBackup) -> Option<&[u8]> {
    match backup {
        GitignoreBackup::Missing => None,
        GitignoreBackup::Present { files, .. } => root_file_bytes_by_name(
            files.iter().map(|file| (file.rel.as_path(), file.bytes.as_slice())),
            ".gitignore",
        ),
    }
}

fn gitignore_regressed(anchor: &GitignoreBackup, progress: &GitignoreBackup) -> bool {
    root_file_deleted_regressed(gitignore_root_bytes(anchor), gitignore_root_bytes(progress))
}

pub(crate) fn vision_root_bytes(backup: &VisionBackup) -> Option<&[u8]> {
    match backup {
        VisionBackup::Missing => None,
        VisionBackup::Present { files, .. } => root_file_bytes_by_name(
            files.iter().map(|file| (file.rel.as_path(), file.bytes.as_slice())),
            "VISION.md",
        ),
    }
}

fn vision_regressed(anchor: &VisionBackup, progress: &VisionBackup) -> bool {
    root_file_deleted_regressed(vision_root_bytes(anchor), vision_root_bytes(progress))
}

#[must_use]
pub fn merge_for_gate_restore(
    anchor: &SessionDotfileBackups,
    progress: &SessionDotfileBackups,
) -> SessionDotfileBackups {
    SessionDotfileBackups {
        malvin_checks: pick_typed(
            &anchor.malvin_checks,
            &progress.malvin_checks,
            malvin_checks_regressed,
        ),
        gitignore: pick_typed(&anchor.gitignore, &progress.gitignore, gitignore_regressed),
        vision: pick_typed(&anchor.vision, &progress.vision, vision_regressed),
        malvin_config_workspace: pick_typed(
            &anchor.malvin_config_workspace,
            &progress.malvin_config_workspace,
            config_workspace_regressed,
        ),
    }
}

#[must_use]
pub fn merge_and_sanitize_for_gate_restore(
    anchor: &SessionDotfileBackups,
    progress: &SessionDotfileBackups,
    work_dir: &Path,
) -> SessionDotfileBackups {
    let _ = work_dir;
    merge_for_gate_restore(anchor, progress)
}

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