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libghostty: optimize bits for selection gesture validation fields

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This commit is contained in:
Mitchell Hashimoto
2026-05-27 11:05:20 -07:00
parent 3e0477a14a
commit 4e2d7c314b
1 changed files with 27 additions and 34 deletions
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61
src/terminal/c/selection_gesture.zig
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@@ -35,25 +35,18 @@ const EventWrapper = struct {
deep_press: SelectionGesture.DeepPress,
},
// Press.pin has no safe sentinel value: PageList.Pin contains a non-null
// node pointer and is undefined until the C caller provides a GhosttyGridRef.
// Track that separately so event execution can reject a press whose required
// ref option was never set, or was later cleared.
press_pin_set: bool = false,
// Drag.pin and Drag.geometry are required by SelectionGesture.drag but have
// no meaningful zero/sentinel value. Track whether the C caller set them so
// dispatch can reject incomplete drag events instead of using placeholder
// data.
drag_pin_set: bool = false,
drag_geometry_set: bool = false,
// AutoscrollTick.viewport and AutoscrollTick.geometry are required by
// SelectionGesture.autoscrollTick but have no meaningful zero/sentinel
// value. Track whether the C caller set them so dispatch can reject
// incomplete tick events instead of using placeholder data.
autoscroll_tick_viewport_set: bool = false,
autoscroll_tick_geometry_set: bool = false,
// Validation sidecar for required event fields that don't have safe
// sentinels in the real SelectionGesture payloads. For example, PageList.Pin
// contains a non-null node pointer and Geometry has no meaningful zero
// value. Keep these as one-bit flags so dispatch can reject incomplete C
// events instead of using undefined placeholder data.
event_validation: packed struct {
press_pin_set: bool = false,
drag_pin_set: bool = false,
drag_geometry_set: bool = false,
autoscroll_tick_viewport_set: bool = false,
autoscroll_tick_geometry_set: bool = false,
} = .{},
// Backing storage for Press/Drag/AutoscrollTick.word_boundary_codepoints.
// The C API receives codepoints as borrowed uint32_t values, but
@@ -305,7 +298,7 @@ pub fn handle_event(
return switch (event_wrapper.event) {
.press => |press| {
if (!event_wrapper.press_pin_set) return .invalid_value;
if (!event_wrapper.event_validation.press_pin_set) return .invalid_value;
const sel = wrapper.gesture.press(t, press) catch return .out_of_memory;
if (out_selection) |out| {
out.* = selection_c.CSelection.fromZig(sel orelse return .no_value);
@@ -317,8 +310,8 @@ pub fn handle_event(
return .no_value;
},
.drag => |drag| {
if (!event_wrapper.drag_pin_set) return .invalid_value;
if (!event_wrapper.drag_geometry_set) return .invalid_value;
if (!event_wrapper.event_validation.drag_pin_set) return .invalid_value;
if (!event_wrapper.event_validation.drag_geometry_set) return .invalid_value;
const sel = wrapper.gesture.drag(t, drag);
if (out_selection) |out| {
out.* = selection_c.CSelection.fromZig(sel orelse return .no_value);
@@ -326,8 +319,8 @@ pub fn handle_event(
return .success;
},
.autoscroll_tick => |tick| {
if (!event_wrapper.autoscroll_tick_viewport_set) return .invalid_value;
if (!event_wrapper.autoscroll_tick_geometry_set) return .invalid_value;
if (!event_wrapper.event_validation.autoscroll_tick_viewport_set) return .invalid_value;
if (!event_wrapper.event_validation.autoscroll_tick_geometry_set) return .invalid_value;
const sel = wrapper.gesture.autoscrollTick(t, tick);
if (out_selection) |out| {
out.* = selection_c.CSelection.fromZig(sel orelse return .no_value);
@@ -458,7 +451,7 @@ fn pressSetTyped(
) Result {
const v = value orelse {
switch (option) {
.ref => event.press_pin_set = false,
.ref => event.event_validation.press_pin_set = false,
.position => {
press.xpos = 0;
press.ypos = 0;
@@ -485,7 +478,7 @@ fn pressSetTyped(
switch (option) {
.ref => {
press.pin = v.toPin() orelse return .invalid_value;
event.press_pin_set = true;
event.event_validation.press_pin_set = true;
},
.position => {
press.xpos = v.x;
@@ -552,7 +545,7 @@ fn dragSetTyped(
) Result {
const v = value orelse {
switch (option) {
.ref => event.drag_pin_set = false,
.ref => event.event_validation.drag_pin_set = false,
.position => {
drag.xpos = 0;
drag.ypos = 0;
@@ -562,7 +555,7 @@ fn dragSetTyped(
&drag.word_boundary_codepoints,
),
.rectangle => drag.rectangle = false,
.geometry => event.drag_geometry_set = false,
.geometry => event.event_validation.drag_geometry_set = false,
.viewport => return .invalid_value,
.repeat_distance,
@@ -577,7 +570,7 @@ fn dragSetTyped(
switch (option) {
.ref => {
drag.pin = v.toPin() orelse return .invalid_value;
event.drag_pin_set = true;
event.event_validation.drag_pin_set = true;
},
.position => {
drag.xpos = v.x;
@@ -591,7 +584,7 @@ fn dragSetTyped(
.rectangle => drag.rectangle = v.*,
.geometry => {
drag.geometry = v.toZig() orelse return .invalid_value;
event.drag_geometry_set = true;
event.event_validation.drag_geometry_set = true;
},
.viewport => return .invalid_value,
@@ -613,7 +606,7 @@ fn autoscrollTickSetTyped(
) Result {
const v = value orelse {
switch (option) {
.viewport => event.autoscroll_tick_viewport_set = false,
.viewport => event.event_validation.autoscroll_tick_viewport_set = false,
.position => {
tick.xpos = 0;
tick.ypos = 0;
@@ -623,7 +616,7 @@ fn autoscrollTickSetTyped(
&tick.word_boundary_codepoints,
),
.rectangle => tick.rectangle = false,
.geometry => event.autoscroll_tick_geometry_set = false,
.geometry => event.event_validation.autoscroll_tick_geometry_set = false,
.ref,
.repeat_distance,
@@ -638,7 +631,7 @@ fn autoscrollTickSetTyped(
switch (option) {
.viewport => {
tick.viewport = v.*;
event.autoscroll_tick_viewport_set = true;
event.event_validation.autoscroll_tick_viewport_set = true;
},
.position => {
tick.xpos = v.x;
@@ -652,7 +645,7 @@ fn autoscrollTickSetTyped(
.rectangle => tick.rectangle = v.*,
.geometry => {
tick.geometry = v.toZig() orelse return .invalid_value;
event.autoscroll_tick_geometry_set = true;
event.event_validation.autoscroll_tick_geometry_set = true;
},
.ref,