refactor: move docs and examples to src folder, update README with accurate benchmarks
This commit is contained in:
289
docs/api.md
289
docs/api.md
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# Pugz API Reference
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## Compiled Mode
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### Build Setup
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In `build.zig`:
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```zig
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const std = @import("std");
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pub fn build(b: *std.Build) void {
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const target = b.standardTargetOptions(.{});
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const optimize = b.standardOptimizeOption(.{});
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const pugz_dep = b.dependency("pugz", .{
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.target = target,
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.optimize = optimize,
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});
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const build_templates = @import("pugz").build_templates;
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const compiled_templates = build_templates.compileTemplates(b, .{
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.source_dir = "views", // Required: directory containing .pug files
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.extension = ".pug", // Optional: default ".pug"
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});
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const exe = b.addExecutable(.{
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.name = "myapp",
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.root_module = b.createModule(.{
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.root_source_file = b.path("src/main.zig"),
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.target = target,
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.optimize = optimize,
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.imports = &.{
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.{ .name = "pugz", .module = pugz_dep.module("pugz") },
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.{ .name = "tpls", .module = compiled_templates },
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},
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}),
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});
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b.installArtifact(exe);
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}
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```
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### Using Compiled Templates
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```zig
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const std = @import("std");
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const tpls = @import("tpls");
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pub fn main() !void {
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var arena = std.heap.ArenaAllocator.init(std.heap.page_allocator);
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defer arena.deinit();
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// Template function name is derived from filename
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// views/home.pug -> tpls.home()
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// views/pages/about.pug -> tpls.pages_about()
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const html = try tpls.home(arena.allocator(), .{
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.title = "Welcome",
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.items = &[_][]const u8{ "One", "Two" },
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});
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std.debug.print("{s}\n", .{html});
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}
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```
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### Template Names
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File paths are converted to function names:
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- `home.pug` → `home()`
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- `pages/about.pug` → `pages_about()`
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- `admin-panel.pug` → `admin_panel()`
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List all available templates:
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```zig
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for (tpls.template_names) |name| {
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std.debug.print("{s}\n", .{name});
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}
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```
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---
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## Interpreted Mode
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### ViewEngine
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```zig
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const std = @import("std");
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const pugz = @import("pugz");
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pub fn main() !void {
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// Initialize engine
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var engine = pugz.ViewEngine.init(.{
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.views_dir = "views", // Required: root views directory
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.mixins_dir = "mixins", // Optional: default "mixins"
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.extension = ".pug", // Optional: default ".pug"
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.pretty = true, // Optional: default true
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});
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var arena = std.heap.ArenaAllocator.init(std.heap.page_allocator);
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defer arena.deinit();
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// Render template (path relative to views_dir, no extension needed)
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const html = try engine.render(arena.allocator(), "pages/home", .{
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.title = "Hello",
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.name = "World",
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});
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std.debug.print("{s}\n", .{html});
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}
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```
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### renderTemplate
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For inline template strings:
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```zig
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const html = try pugz.renderTemplate(allocator,
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\\h1 Hello, #{name}!
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\\ul
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\\ each item in items
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\\ li= item
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, .{
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.name = "World",
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.items = &[_][]const u8{ "one", "two", "three" },
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});
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```
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---
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## Data Types
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Templates accept Zig structs as data. Supported field types:
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| Zig Type | Template Usage |
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|----------|----------------|
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| `[]const u8` | `#{field}` |
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| `i64`, `i32`, etc. | `#{field}` (converted to string) |
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| `bool` | `if field` |
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| `[]const T` | `each item in field` |
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| `?T` (optional) | `if field` (null = false) |
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| nested struct | `#{field.subfield}` |
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### Example
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```zig
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const data = .{
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.title = "My Page",
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.count = 42,
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.show_header = true,
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.items = &[_][]const u8{ "a", "b", "c" },
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.user = .{
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.name = "Alice",
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.email = "alice@example.com",
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},
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};
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const html = try tpls.home(allocator, data);
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```
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Template:
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```pug
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h1= title
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p Count: #{count}
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if show_header
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header Welcome
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ul
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each item in items
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li= item
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p #{user.name} (#{user.email})
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```
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---
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## Directory Structure
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Recommended project layout:
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```
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myproject/
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├── build.zig
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├── build.zig.zon
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├── src/
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│ └── main.zig
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└── views/
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├── mixins/
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│ ├── buttons.pug
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│ └── cards.pug
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├── layouts/
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│ └── base.pug
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├── partials/
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│ ├── header.pug
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│ └── footer.pug
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└── pages/
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├── home.pug
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└── about.pug
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```
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### Mixin Resolution
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Mixins are resolved in order:
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1. Defined in the current template
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2. Loaded from `views/mixins/*.pug` (lazy-loaded on first use)
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---
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## Web Framework Integration
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### http.zig
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```zig
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const std = @import("std");
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const httpz = @import("httpz");
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const tpls = @import("tpls");
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const App = struct {
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// app state
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};
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fn handler(app: *App, req: *httpz.Request, res: *httpz.Response) !void {
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_ = app;
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_ = req;
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const html = try tpls.home(res.arena, .{
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.title = "Hello",
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});
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res.content_type = .HTML;
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res.body = html;
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}
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```
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### Using ViewEngine with http.zig
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```zig
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const App = struct {
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engine: pugz.ViewEngine,
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};
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fn handler(app: *App, req: *httpz.Request, res: *httpz.Response) !void {
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_ = req;
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const html = app.engine.render(res.arena, "home", .{
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.title = "Hello",
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}) catch |err| {
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res.status = 500;
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res.body = @errorName(err);
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return;
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};
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res.content_type = .HTML;
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res.body = html;
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}
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```
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---
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## Error Handling
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```zig
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const html = engine.render(allocator, "home", data) catch |err| {
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switch (err) {
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error.FileNotFound => // template file not found
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error.ParseError => // invalid template syntax
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error.OutOfMemory => // allocation failed
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else => // other errors
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}
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};
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```
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---
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## Memory Management
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Always use `ArenaAllocator` for template rendering:
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```zig
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// Per-request pattern
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fn handleRequest(allocator: std.mem.Allocator) ![]u8 {
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var arena = std.heap.ArenaAllocator.init(allocator);
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defer arena.deinit();
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return try tpls.home(arena.allocator(), .{ .title = "Hello" });
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}
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```
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The arena pattern is efficient because:
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- Template rendering creates many small allocations
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- All allocations are freed at once with `arena.deinit()`
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- No need to track individual allocations
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