update: context

src/context.zig

@@ -0,0 +1,51 @@
+const std = @import("std");
+
+pub const Value = union(enum) {
+    null,
+    bool: bool,
+    int: i64,
+    float: f64,
+    string: []const u8,
+    list: []const Value,
+    dict: std.StringHashMapUnmanaged(Value),
+
+    pub fn deinit(self: Value) void {
+        _ = self; // nada — a arena libera tudo
+    }
+};
+
+pub const Context = struct {
+    arena: std.heap.ArenaAllocator,
+    map: std.StringHashMapUnmanaged(Value),
+
+    pub fn init(child_allocator: std.mem.Allocator) Context {
+        const arena = std.heap.ArenaAllocator.init(child_allocator);
+        return .{
+            .arena = arena,
+            .map = .{},
+        };
+    }
+
+    pub fn allocator(self: *Context) std.mem.Allocator {
+        return self.arena.allocator();
+    }
+
+    pub fn deinit(self: *Context) void {
+        self.arena.deinit();
+    }
+
+    pub fn set(self: *Context, key: []const u8, value: Value) !void {
+        const gop = try self.map.getOrPut(self.allocator(), key);
+        if (gop.found_existing) {
+            // opcional: deinit value antigo se necessário
+            // mas como arena libera tudo, não precisa
+        } else {
+            gop.key_ptr.* = try self.allocator().dupe(u8, key);
+        }
+        gop.value_ptr.* = value;
+    }
+
+    pub fn get(self: *const Context, key: []const u8) ?Value {
+        return self.map.get(key);
+    }
+};

src/context_test.zig

@@ -0,0 +1,76 @@
+const std = @import("std");
+const testing = std.testing;
+const Context = @import("context.zig").Context;
+const Value = @import("context.zig").Value;
+
+test "context com arena" {
+    const allocator = testing.allocator;
+    var ctx = Context.init(allocator);
+    defer ctx.deinit();
+
+    try ctx.set("nome", Value{ .string = "Lucas" }); // sem dupe!
+    try ctx.set("idade", Value{ .int = 30 });
+
+    try testing.expectEqualStrings("Lucas", ctx.get("nome").?.string);
+    try testing.expectEqual(@as(i64, 30), ctx.get("idade").?.int);
+}
+
+test "context todos os tipos" {
+    const allocator = testing.allocator;
+    var ctx = Context.init(allocator);
+    defer ctx.deinit();
+
+    // null
+    try ctx.set("nulo", Value{ .null = {} });
+    try testing.expectEqual(ctx.get("nulo").?, .null);
+
+    // bool
+    try ctx.set("verdadeiro", Value{ .bool = true });
+    try ctx.set("falso", Value{ .bool = false });
+    try testing.expect(ctx.get("verdadeiro").?.bool == true);
+    try testing.expect(ctx.get("falso").?.bool == false);
+
+    // int
+    try ctx.set("idade", Value{ .int = 30 });
+    try testing.expect(ctx.get("idade").?.int == 30);
+
+    // float
+    try ctx.set("preco", Value{ .float = 99.99 });
+    try testing.expectApproxEqAbs(@as(f64, 99.99), ctx.get("preco").?.float, 0.001);
+
+    // string
+    try ctx.set("nome", Value{ .string = "Lucas" });
+    try testing.expectEqualStrings("Lucas", ctx.get("nome").?.string);
+
+    // list
+    var list = try allocator.alloc(Value, 3);
+    defer allocator.free(list);
+
+    list[0] = Value{ .int = 1 };
+    list[1] = Value{ .int = 2 };
+    list[2] = Value{ .int = 3 };
+
+    try ctx.set("numeros", Value{ .list = list });
+    const numeros = ctx.get("numeros").?.list;
+    try testing.expectEqual(@as(usize, 3), numeros.len);
+    try testing.expect(numeros[0].int == 1);
+    try testing.expect(numeros[1].int == 2);
+    try testing.expect(numeros[2].int == 3);
+
+    // dict
+    var dict = std.StringHashMapUnmanaged(Value){};
+    try dict.put(ctx.allocator(), "chave1", Value{ .string = "valor1" });
+    try dict.put(ctx.allocator(), "chave2", Value{ .int = 42 });
+    try ctx.set("config", Value{ .dict = dict });
+    const config = ctx.get("config").?.dict;
+    try testing.expectEqualStrings("valor1", config.get("chave1").?.string);
+    try testing.expect(config.get("chave2").?.int == 42);
+}
+
+test "failback" {
+    const allocator = testing.allocator;
+    var ctx = Context.init(allocator);
+    defer ctx.deinit();
+
+    try testing.expectEqual(ctx.get("nome"), null);
+}

todo.md

@@ -22,10 +22,10 @@
 - [x] regroup
 - [x] resetcycle
 - [x] spaceless
-- [ ] templatetag
+- [x] templatetag
 - [x] url
 - [x] verbatim
-- [ ] widthratio
+- [x] widthratio
 - [x] with
 
 
@@ -114,8 +114,8 @@ ___
 - [x] querystring
 - [x] regroup
 - [x] resetcycle
-- [ ] templatetag
-- [ ] widthratio
+- [x] templatetag
+- [x] widthratio
 
 2 - projetar o Context com calma:
 - Estrutura hierárquica (escopos aninhados para with, for, etc.)