From 81147dd1010644da0e61991561988d0e39de729c Mon Sep 17 00:00:00 2001
From: Vallahor <vallahor91@gmail.com>
Date: Fri, 10 Jun 2022 10:40:53 -0300
Subject: [PATCH] autodoc: initial work in opaque_decl

---
 lib/docs/main.js |  6 ++++++
 src/Autodoc.zig  | 35 ++++++++++++++++++++++++++++++++++-
 2 files changed, 40 insertions(+), 1 deletion(-)

diff --git a/lib/docs/main.js b/lib/docs/main.js
index 4d8f88b30e..9877ffa8c5 100644
--- a/lib/docs/main.js
+++ b/lib/docs/main.js
@@ -1457,6 +1457,12 @@ var zigAnalysis;
               if (typeof typeObj === 'number') typeObj = zigAnalysis.types[typeObj];
               switch (typeObj.kind) {
                   default: throw "TODO";
+                  case typeKinds.Opaque:
+                  {
+                    let opaqueObj =  (typeObj);
+
+                    return opaqueObj.name;
+                  }
                   case typeKinds.ComptimeExpr:
                   {
                       return "anyopaque";
diff --git a/src/Autodoc.zig b/src/Autodoc.zig
index 7100816f8f..ea79576678 100644
--- a/src/Autodoc.zig
+++ b/src/Autodoc.zig
@@ -2249,7 +2249,40 @@ fn walkInstruction(
 
                     return result;
                 },
-                .opaque_decl => return self.cteTodo("opaque {...}"),
+                .opaque_decl => {
+                    const small = @bitCast(Zir.Inst.OpaqueDecl.Small, extended.small);
+                    var extra_index: usize = extended.operand;
+                    const src_node: ?i32 = if (small.has_src_node) blk: {
+                        const src_node = @bitCast(i32, file.zir.extra[extra_index]);
+                        extra_index += 1;
+                        break :blk src_node;
+                    } else null;
+                    _ = src_node;
+
+                    const decls_len = if (small.has_decls_len) blk: {
+                        const decls_len = file.zir.extra[extra_index];
+                        extra_index += 1;
+                        break :blk decls_len;
+                    } else 0;
+                    _ = decls_len;
+
+                    const decls_bits = file.zir.extra[extra_index];
+                    _ = decls_bits;
+
+                    // const sep = "=" ** 200;
+                    // std.debug.print("{s}\n", .{sep});
+                    // std.debug.print("small = {any}\n", .{small});
+                    // std.debug.print("src_node = {}\n", .{src_node});
+                    // std.debug.print("decls_len = {}\n", .{decls_len});
+                    // std.debug.print("decls_bit = {}\n", .{decls_bits});
+                    // std.debug.print("{s}\n", .{sep});
+                    const type_slot_index = self.types.items.len - 1;
+                    try self.types.append(self.arena, .{ .Opaque = .{ .name = "TODO" } });
+                    return DocData.WalkResult{
+                        .typeRef = .{ .type = @enumToInt(Ref.anyopaque_type) },
+                        .expr = .{ .type = type_slot_index },
+                    };
+                },
                 .variable => {
                     const small = @bitCast(Zir.Inst.ExtendedVar.Small, extended.small);
                     var extra_index: usize = extended.operand;