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
|
const std = @import("std");
const Allocator = std.mem.Allocator;
pub const HTML = @import("html/Element.zig");
pub const paragraph = @import("paragraph.zig");
pub const Title = @import("Title.zig");
pub const list = @import("list.zig");
pub const Image = @import("Image.zig");
pub const Root = @import("Root.zig");
const blocks = @import("blocks.zig");
pub const Code = blocks.Code;
pub const Figure = blocks.Figure;
pub const Callout = blocks.Callout;
pub const Node = struct {
ptr: *anyopaque,
vtable: struct { element: *const fn (*anyopaque) Element },
node: std.DoublyLinkedList.Node = .{},
pub fn from(n: *std.DoublyLinkedList.Node) *Node {
const v: *Node = @fieldParentPtr("node", n);
return v;
}
pub fn element(self: Node) Element {
return self.vtable.element(self.ptr);
}
};
const Element = @This();
vtable: struct {
html: *const fn (*anyopaque, Allocator) HTML.Error!HTML,
node: *const fn (*anyopaque) *Node,
},
ptr: *anyopaque,
pub fn renderHTML(self: Element, alloc: Allocator) HTML.Error![]const u8 {
const root = try HTML.Root.init(alloc);
defer root.deinit();
var el = try self.vtable.html(self.ptr, root.allocator());
return el.render(alloc);
}
pub fn html(self: Element, alloc: Allocator) HTML.Error!HTML {
return self.vtable.html(self.ptr, alloc);
}
pub fn node(self: Element) *Node {
return self.vtable.node(self.ptr);
}
pub const Literal = struct {
content: []const u8,
node: Node = .{
.ptr = undefined,
.vtable = .{ .element = fromNode },
},
const Self = @This();
pub fn init(alloc: Allocator, content: []const u8) !*Self {
const v = try alloc.create(Self);
v.* = .{ .content = content };
v.node.ptr = v;
return v;
}
pub fn element(self: *Self) Element {
return .{ .ptr = self, .vtable = .{ .html = Self.html, .node = getNode } };
}
fn getNode(context: *anyopaque) *Node {
const self: *Self = @ptrCast(@alignCast(context));
return &self.node;
}
fn fromNode(context: *anyopaque) Element {
const self: *Self = @ptrCast(@alignCast(context));
return self.element();
}
fn html(context: *anyopaque, alloc: Allocator) HTML.Error!HTML {
const self: *Self = @ptrCast(@alignCast(context));
return (try HTML.Literal.init(alloc, self.content)).element();
}
};
pub fn Simple(comptime tag: []const u8) type {
return struct {
content: ?Element = null,
node: Node,
const Self = @This();
pub fn init(alloc: Allocator) !*Self {
const v = try alloc.create(Self);
v.node = .{ .ptr = v, .vtable = .{ .element = fromNode } };
return v;
}
pub fn element(self: *Self) Element {
return .{ .ptr = self, .vtable = .{ .html = Self.html, .node = getNode } };
}
pub fn toTag(self: *Self, alloc: Allocator, comptime target: []const u8) !*Simple(target) {
defer alloc.destroy(self);
const el = try Simple(target).init(alloc);
el.content = self.content;
return el;
}
pub fn toRoot(self: *Self, alloc: Allocator) !*Root {
defer alloc.destroy(self);
const el = try Root.init(alloc);
if (self.content) |it| el.append(it);
return el;
}
fn getNode(context: *anyopaque) *Node {
const self: *Self = @ptrCast(@alignCast(context));
return &self.node;
}
fn fromNode(context: *anyopaque) Element {
const self: *Self = @ptrCast(@alignCast(context));
return self.element();
}
fn html(context: *anyopaque, alloc: Allocator) HTML.Error!HTML {
const self: *Self = @ptrCast(@alignCast(context));
var el = try HTML.Content.init(alloc, tag);
if (self.content) |it| el.content = try it.html(alloc);
return el.element();
}
};
}
|
