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const std = @import("std");
const Arena = std.heap.ArenaAllocator;
const Allocator = std.mem.Allocator;
const eql = std.mem.eql;
const List = std.ArrayList;
const html = @import("html.zig");
pub const Void = @import("Void.zig");
pub const Content = @import("Content.zig");
pub const Literal = @import("Literal.zig");
pub const Root = @import("Root.zig");
pub const Error = html.Error || Allocator.Error;
const Element = @This();
vtable: struct {
render: *const fn (self: *anyopaque, alloc: Allocator) Error![]const u8,
},
ptr: *anyopaque,
pub fn render(self: Element, alloc: Allocator) Error![]const u8 {
return self.vtable.render(self.ptr, alloc);
}
fn doTest(alloc: Allocator, el: Element, exp: []const u8) !void {
const got = try el.render(alloc);
defer alloc.free(got);
std.testing.expect(eql(u8, got, exp)) catch |err| {
std.debug.print("{s}\n", .{got});
return err;
};
}
test "void" {
var arena = Arena.init(std.testing.allocator);
defer arena.deinit();
const alloc = arena.allocator();
var br = try Void.init(alloc, "br");
try doTest(alloc, br.element(), "<br>");
var img = try Void.init(alloc, "img");
try img.setAttribute("src", "foo");
try img.setAttribute("alt", "bar");
try doTest(alloc, img.element(), "<img src=\"foo\" alt=\"bar\">");
}
test "content" {
var arena = Arena.init(std.testing.allocator);
defer arena.deinit();
const alloc = arena.allocator();
var p = try Content.init(alloc, "p");
var content = try Literal.init(alloc, "hello world");
try p.append(content.element());
try doTest(alloc, content.element(), "hello world");
try doTest(alloc, p.element(), "<p>hello world</p>");
var div = try Content.init(alloc, "div");
try div.base.appendClass("foo-bar");
try div.append(p.element());
try div.append((try Void.init(alloc, "br")).element());
try doTest(alloc, div.element(), "<div class=\"foo-bar\"><p>hello world</p><br></div>");
}
test "root" {
const root = try Root.init(std.testing.allocator);
defer root.deinit();
const alloc = root.allocator();
var p = try Content.init(alloc, "p");
var content = try Literal.init(alloc, "hello world");
try p.append(content.element());
try root.append(p.element());
var br = try Void.init(alloc, "br");
try root.append(br.element());
try doTest(alloc, root.element(), "<p>hello world</p><br>");
}
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