From e87e08e964135eec936572524caab20f7b6260b9 Mon Sep 17 00:00:00 2001
From: yuzu <yuzucchii@outlook.com>
Date: Fri, 30 May 2025 01:58:02 -0500
Subject: [PATCH] :D

---
 language.zig   | 10 +--------
 reflection.zig | 56 +++++++++++++++++++++++++++++++++++++++-----------
 2 files changed, 45 insertions(+), 21 deletions(-)

diff --git a/language.zig b/language.zig
index d9d8e5b..83a0aae 100644
--- a/language.zig
+++ b/language.zig
@@ -103,20 +103,12 @@ pub const Flags = packed struct {
     allow_comments: bool = false,
     /// Not to error on trailing comma, default is `false` for obvious reasons
     allow_trailing_comma: bool = false,
-    /// Allows parsing `packed struct` as an `int`, size is the backing int
-    bitfields: bool = false,
-    /// Allows parsing `enum` as an `int`, size is the backing int
-    real_enums: bool = false,
-    /// Allows parsing unions, default behaviour is yet to be concluded
-    unions: bool = false,
-    /// To cast numbers always as f64, as the name says
-    numbersf64: bool = false,
 };
 
 pub const Options = struct {
     comptime indent_len: usize = 4,
     comptime max_depth: usize = 256,
-    comptime flags: Flags = .{},
+    flags: Flags = .{},
 };
 
 index: std.MultiArrayList(JsonValue) = .{},
diff --git a/reflection.zig b/reflection.zig
index 916c6ee..1677ffe 100644
--- a/reflection.zig
+++ b/reflection.zig
@@ -33,35 +33,59 @@ pub fn deinit(self: *Self, allocator: mem.Allocator) void {
     allocator.destroy(self.tokenizer);
 }
 
-/// always returns 0 (root)
-/// needs an index
-/// const idx: usize = try self.language.parse(allocator, self.tokenizer);
+/// needs an index but useful otherwise
+/// root starting from idx
 pub fn reflectT(self: *Self, comptime T: type, allocator: mem.Allocator, idx: usize) !T {
     const Schema = @typeInfo(T);
+    const flags = self.language.options.flags;
 
     switch (self.language.index.get(idx)) {
         .null => {
             if (Schema == .null) return null;
             return error.TypeError;
         },
-        .bool => |b| {
-            if (Schema == .bool) return b;
-            return error.TypeError;
+        .bool => |b| switch (Schema) {
+            .bool => return b,
+            .@"union" => |unionInfo| inline for (unionInfo.fields) |field| {
+                var r: T = undefined;
+                r = @unionInit(T, field.name, b);
+                return r;
+            },
+            else => return error.TypeError,
         },
         .number => |number| switch (Schema) {
             .int, .comptime_int => return @intFromFloat(number),
             .float, .comptime_float => return @floatCast(number),
+            .@"enum" => |enumInfo| {
+                const int: enumInfo.tag_type = @intFromFloat(number);
+                return @enumFromInt(int);
+            },
             .@"struct" => |structInfo| switch (structInfo.layout) {
                 .@"packed" => {
-                    const my_int: structInfo.backing_integer.? =
-                        @intFromFloat(number);
-                    return @bitCast(my_int);
+                    const int: structInfo.backing_integer.? = @intFromFloat(number);
+                    return @bitCast(int);
                 },
                 else => return error.TypeError,
             },
+            .@"union" => |unionInfo| {
+                inline for (unionInfo.fields) |field| switch (@typeInfo(field.type)) {
+                    .int, .comptime_int => return @unionInit(T, field.name, @intFromFloat(number)),
+                    .float, .comptime_float => return @unionInit(T, field.name, @floatCast(number)),
+                    else => {},
+                };
+                return error.TypeError;
+            },
             else => unreachable,
         },
         .string => |string| switch (Schema) {
+            .@"union" => |unionInfo| inline for (unionInfo.fields) |field| {
+                if (field.type == []const u8) {
+                    var r: T = undefined;
+                    const strslice = string.slice(&self.language.strings);
+                    r = @unionInit(T, field.name, strslice);
+                    return r;
+                }
+            },
             .array => |arrayInfo| {
                 assert(arrayInfo.child == u8);
                 const strslice = string.slice(&self.language.strings);
@@ -141,7 +165,11 @@ pub fn reflectT(self: *Self, comptime T: type, allocator: mem.Allocator, idx: us
                     if (map.get(field.name)) |next_i| {
                         @field(r, field.name) = try self.reflectT(field.type, allocator, next_i);
                     } else switch (@typeInfo(field.type)) {
-                        .optional => @field(r, field.name) = null,
+                        .optional => {
+                            if (flags.bitfields)
+                                @field(r, field.name) = null;
+                            @panic("Unknown property: " ++ field.name);
+                        },
                         else => @panic("Unknown property: " ++ field.name),
                     }
                 }
@@ -163,7 +191,9 @@ test reflectT {
         \\  "age": 15,
         \\  "name": "Yuzu",
         \\  "admin": true,
-        \\  "flags": 0
+        \\  "flags": 0,
+        \\  "union": ":D",
+        \\  "enum": 1
         \\}
     ;
     var self = try allocator.create(Self);
@@ -184,9 +214,11 @@ test reflectT {
         name: []const u8,
         admin: bool,
         flags: UserFlags,
+        @"union": union { hi: bool, bye: f64, n128: []const u8 },
+        @"enum": enum { hello, world },
     };
 
     const root = try self.reflectT(UserSchema, allocator, idx);
 
-    std.debug.print("is cool? {} is friendly? {}\n", .{ root.flags.is_cool, root.flags.is_friendly });
+    std.debug.print("friend? {s}\n", .{root.@"union".n128});
 }