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const std = @import("std");
const Allocator = std.mem.Allocator;
const List = std.ArrayList;
const Element = @import("Element.zig");
const Error = Element.Error;
base: Element.Void,
content: List(Element),
pub const Self = @This();
pub fn init(alloc: Allocator, tag: []const u8) Error!*Self {
const v = try alloc.create(Self);
v.* = .{
.base = .{
.alloc = alloc,
.tag = tag,
.attributes = .init(alloc),
.class_list = .init(alloc),
},
.content = try .initCapacity(alloc, 2),
};
return v;
}
pub fn element(self: *Self) Element {
return .{ .vtable = .{ .render = Self.render }, .ptr = self };
}
pub fn append(self: *Self, content: Element) Error!void {
return self.content.append(self.base.alloc, content);
}
fn render(context: *anyopaque, alloc: Allocator) Error![]const u8 {
const self: *Self = @ptrCast(@alignCast(context));
var base = self.base;
const b = try base.element().render(alloc);
defer alloc.free(b);
var acc = try List(u8).initCapacity(alloc, b.len + self.content.items.len);
try acc.appendSlice(alloc, b);
for (self.content.items) |it| {
var v = it;
const sub = try v.render(alloc);
defer alloc.free(sub);
try acc.appendSlice(alloc, sub);
}
try acc.appendSlice(alloc, "</");
try acc.appendSlice(alloc, base.tag);
try acc.append(alloc, '>');
return acc.toOwnedSlice(alloc);
}
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