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mod(layout/Stacks): add comptime checks for correct Element union typing
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Yves Biener
2024-11-13 16:49:38 +01:00
parent 1e59a7c593
commit 61f6c72bf8
2 changed files with 12 additions and 2 deletions
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7
src/layout/HStack.zig
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@@ -19,8 +19,13 @@ pub fn Layout(comptime Event: type, comptime Element: type, comptime Renderer: t
@compileError("Provided type `Element` for `Layout(comptime Event: type, comptime Element: type, comptime Renderer: type)` is not of type `union(enum)`.");
}
const Elements = std.ArrayList(Element);
// TODO: expect name of field to be corresponding to the type
if (!std.mem.eql(u8, @typeInfo(Element).Union.fields[0].name, "layout")) {
@compileError("Expected `layout: Layout` to be the first union element, but has name: " ++ @typeInfo(Element).Union.fields[0].name);
}
const LayoutType = @typeInfo(Element).Union.fields[0].type;
if (!std.mem.eql(u8, @typeInfo(Element).Union.fields[1].name, "widget")) {
@compileError("Expected `widget: Widget` to be the first union element, but has name: " ++ @typeInfo(Element).Union.fields[1].name);
}
const WidgetType = @typeInfo(Element).Union.fields[1].type;
const Events = std.ArrayList(Event);
return struct {

7
src/layout/VStack.zig
View File

@@ -19,8 +19,13 @@ pub fn Layout(comptime Event: type, comptime Element: type, comptime Renderer: t
@compileError("Provided type `Element` for `Layout(comptime Event: type, comptime Element: type, comptime Renderer: type)` is not of type `union(enum)`.");
}
const Elements = std.ArrayList(Element);
// TODO: expect name of field to be corresponding to the type
if (!std.mem.eql(u8, @typeInfo(Element).Union.fields[0].name, "layout")) {
@compileError("Expected `layout: Layout` to be the first union element, but has name: " ++ @typeInfo(Element).Union.fields[0].name);
}
const LayoutType = @typeInfo(Element).Union.fields[0].type;
if (!std.mem.eql(u8, @typeInfo(Element).Union.fields[1].name, "widget")) {
@compileError("Expected `widget: Widget` to be the first union element, but has name: " ++ @typeInfo(Element).Union.fields[1].name);
}
const WidgetType = @typeInfo(Element).Union.fields[1].type;
const Events = std.ArrayList(Event);
return struct {