aboutsummaryrefslogtreecommitdiffstats
path: root/vendor/libghostty-vt/src/terminal/c/row.zig
blob: 136d683599e0b48f2e37bdf3058ed006ab140dc0 (plain) (blame)
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
const std = @import("std");
const testing = std.testing;
const lib = @import("../lib.zig");
const page = @import("../page.zig");
const Row = page.Row;
const Result = @import("result.zig").Result;

/// C: GhosttyRow
pub const CRow = Row.C;

/// C: GhosttyRowSemanticPrompt
pub const SemanticPrompt = enum(c_int) {
    none = 0,
    prompt = 1,
    prompt_continuation = 2,
};

/// C: GhosttyRowData
pub const RowData = enum(c_int) {
    invalid = 0,

    /// Whether this row is soft-wrapped.
    /// Output type: bool *
    wrap = 1,

    /// Whether this row is a continuation of a soft-wrapped row.
    /// Output type: bool *
    wrap_continuation = 2,

    /// Whether any cells in this row have grapheme clusters.
    /// Output type: bool *
    grapheme = 3,

    /// Whether any cells in this row have styling (may have false positives).
    /// Output type: bool *
    styled = 4,

    /// Whether any cells in this row have hyperlinks (may have false positives).
    /// Output type: bool *
    hyperlink = 5,

    /// The semantic prompt state of this row.
    /// Output type: GhosttyRowSemanticPrompt *
    semantic_prompt = 6,

    /// Whether this row contains a Kitty virtual placeholder.
    /// Output type: bool *
    kitty_virtual_placeholder = 7,

    /// Whether this row is dirty and requires a redraw.
    /// Output type: bool *
    dirty = 8,

    /// Output type expected for querying the data of the given kind.
    pub fn OutType(comptime self: RowData) type {
        return switch (self) {
            .invalid => void,
            .wrap, .wrap_continuation, .grapheme, .styled, .hyperlink => bool,
            .kitty_virtual_placeholder, .dirty => bool,
            .semantic_prompt => SemanticPrompt,
        };
    }
};

pub fn get(
    row_: CRow,
    data: RowData,
    out: ?*anyopaque,
) callconv(lib.calling_conv) Result {
    if (comptime std.debug.runtime_safety) {
        _ = std.enums.fromInt(RowData, @intFromEnum(data)) orelse {
            return .invalid_value;
        };
    }

    return switch (data) {
        .invalid => .invalid_value,
        inline else => |comptime_data| getTyped(
            row_,
            comptime_data,
            @ptrCast(@alignCast(out)),
        ),
    };
}

pub fn get_multi(
    row_: CRow,
    count: usize,
    keys: ?[*]const RowData,
    values: ?[*]?*anyopaque,
    out_written: ?*usize,
) callconv(lib.calling_conv) Result {
    const k = keys orelse return .invalid_value;
    const v = values orelse return .invalid_value;

    for (0..count) |i| {
        const result = get(row_, k[i], v[i]);
        if (result != .success) {
            if (out_written) |w| w.* = i;
            return result;
        }
    }
    if (out_written) |w| w.* = count;
    return .success;
}

fn getTyped(
    row_: CRow,
    comptime data: RowData,
    out: *data.OutType(),
) Result {
    const row: Row = @bitCast(row_);
    switch (data) {
        .invalid => return .invalid_value,
        .wrap => out.* = row.wrap,
        .wrap_continuation => out.* = row.wrap_continuation,
        .grapheme => out.* = row.grapheme,
        .styled => out.* = row.styled,
        .hyperlink => out.* = row.hyperlink,
        .semantic_prompt => out.* = @enumFromInt(@intFromEnum(row.semantic_prompt)),
        .kitty_virtual_placeholder => out.* = row.kitty_virtual_placeholder,
        .dirty => out.* = row.dirty,
    }

    return .success;
}

test "get wrap" {
    var zig_row: Row = @bitCast(@as(u64, 0));
    zig_row.wrap = true;
    const row: CRow = @bitCast(zig_row);
    var wrap: bool = false;
    try testing.expectEqual(Result.success, get(row, .wrap, @ptrCast(&wrap)));
    try testing.expect(wrap);
}

test "get semantic_prompt" {
    var zig_row: Row = @bitCast(@as(u64, 0));
    zig_row.semantic_prompt = .prompt;
    const row: CRow = @bitCast(zig_row);
    var sp: SemanticPrompt = .none;
    try testing.expectEqual(Result.success, get(row, .semantic_prompt, @ptrCast(&sp)));
    try testing.expectEqual(SemanticPrompt.prompt, sp);
}

test "get dirty" {
    var zig_row: Row = @bitCast(@as(u64, 0));
    zig_row.dirty = true;
    const row: CRow = @bitCast(zig_row);
    var dirty: bool = false;
    try testing.expectEqual(Result.success, get(row, .dirty, @ptrCast(&dirty)));
    try testing.expect(dirty);
}

test "get_multi success" {
    var zig_row: Row = @bitCast(@as(u64, 0));
    zig_row.wrap = true;
    zig_row.dirty = true;
    const row_val: CRow = @bitCast(zig_row);

    var wrap: bool = false;
    var dirty: bool = false;
    var written: usize = 0;

    const keys = [_]RowData{ .wrap, .dirty };
    var values = [_]?*anyopaque{ @ptrCast(&wrap), @ptrCast(&dirty) };
    try testing.expectEqual(Result.success, get_multi(row_val, keys.len, &keys, &values, &written));
    try testing.expectEqual(keys.len, written);
    try testing.expect(wrap);
    try testing.expect(dirty);
}

test "get_multi error sets out_written" {
    var zig_row: Row = @bitCast(@as(u64, 0));
    zig_row.wrap = true;
    const row_val: CRow = @bitCast(zig_row);

    var wrap: bool = false;
    var written: usize = 99;

    const keys = [_]RowData{ .wrap, .invalid };
    var values = [_]?*anyopaque{ @ptrCast(&wrap), @ptrCast(&wrap) };
    try testing.expectEqual(Result.invalid_value, get_multi(row_val, keys.len, &keys, &values, &written));
    try testing.expectEqual(1, written);
    try testing.expect(wrap);
}

test "get_multi null keys returns invalid_value" {
    const row_val: CRow = @bitCast(@as(u64, 0));
    var wrap: bool = false;
    var values = [_]?*anyopaque{@ptrCast(&wrap)};
    try testing.expectEqual(Result.invalid_value, get_multi(row_val, 1, null, &values, null));
}