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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");
const Element = @This();
vtable: struct {
deinit: *const fn (*anyopaque, Allocator) void,
html: *const fn (*anyopaque, Allocator) HTML.Error!HTML,
},
ptr: *anyopaque,
pub fn renderHTML(self: Element, alloc: Allocator) HTML.Error![]const u8 {
var el = try self.vtable.html(self.ptr, alloc);
defer el.deinit();
return el.render(alloc);
}
pub fn deinit(self: Element, alloc: Allocator) void {
self.vtable.deinit(self.ptr, alloc);
}
pub fn html(self: Element, alloc: Allocator) HTML.Error!HTML {
return self.vtable.html(self.ptr, alloc);
}
pub const Empty = struct {
content: std.ArrayList(Element),
const Self = @This();
pub fn init(alloc: Allocator) !*Self {
const v = try alloc.create(Self);
v.* = .{ .content = try .initCapacity(alloc, 2) };
return v;
}
pub fn element(self: *Self) Element {
return .{ .ptr = self, .vtable = .{ .deinit = destroy, .html = Self.html } };
}
pub fn deinit(self: *Self, alloc: Allocator) void {
destroy(self, alloc);
}
fn destroy(context: *anyopaque, alloc: Allocator) void {
const self: *Self = @ptrCast(@alignCast(context));
for (self.content.items) |it| it.deinit(alloc);
self.content.deinit(alloc);
alloc.destroy(self);
}
fn html(context: *anyopaque, alloc: Allocator) HTML.Error!HTML {
const self: *Self = @ptrCast(@alignCast(context));
var el = HTML.initEmpty(alloc);
errdefer el.deinit();
for (self.content.items) |it| try el.appendContent(try it.html(alloc));
return el;
}
};
pub const Literal = struct {
content: []const u8,
const Self = @This();
pub fn init(alloc: Allocator, content: []const u8) !*Self {
const v = try alloc.create(Self);
v.* = .{ .content = content };
return v;
}
pub fn element(self: *Self) Element {
return .{ .ptr = self, .vtable = .{ .deinit = destroy, .html = Self.html } };
}
pub fn deinit(self: *Self, alloc: Allocator) void {
destroy(self, alloc);
}
fn destroy(context: *anyopaque, alloc: Allocator) void {
const self: *Self = @ptrCast(@alignCast(context));
alloc.destroy(self);
}
fn html(context: *anyopaque, alloc: Allocator) HTML.Error!HTML {
const self: *Self = @ptrCast(@alignCast(context));
return HTML.initLitEscaped(alloc, self.content);
}
};
pub fn Simple(comptime tag: []const u8) type {
return struct {
content: std.ArrayList(Element),
const Self = @This();
pub fn init(alloc: Allocator) !*Self {
const v = try alloc.create(Self);
v.* = .{ .content = try .initCapacity(alloc, 2) };
return v;
}
pub fn element(self: *Self) Element {
return .{ .ptr = self, .vtable = .{ .deinit = destroy, .html = Self.html } };
}
pub fn deinit(self: *Self, alloc: Allocator) void {
destroy(self, alloc);
}
pub fn toTag(self: *Self, alloc: Allocator, comptime target: []const u8) !*Simple(target) {
const el = try Simple(target).init(alloc);
self.conv(alloc, &el.content);
return el;
}
pub fn toEmpty(self: *Self, alloc: Allocator) !*Empty {
const el = try Empty.init(alloc);
self.conv(alloc, &el.content);
return el;
}
fn conv(self: *Self, alloc: Allocator, arr: *std.ArrayList(Element)) void {
arr.deinit(alloc);
arr.* = self.content;
alloc.destroy(self);
}
fn destroy(context: *anyopaque, alloc: Allocator) void {
var self: *Self = @ptrCast(@alignCast(context));
for (self.content.items) |it| it.deinit(alloc);
self.content.deinit(alloc);
alloc.destroy(self);
}
fn html(context: *anyopaque, alloc: Allocator) HTML.Error!HTML {
const self: *Self = @ptrCast(@alignCast(context));
var el = try HTML.init(alloc, .content, tag);
errdefer el.deinit();
for (self.content.items) |it| try el.appendContent(try it.html(alloc));
return el;
}
};
}
|
